Part I
According to the school's arrangement, we environmental majors in 20xx x month x day - x day two days to go to the following four places to carry out a series of internship to understand:
20xx x month x morning, we went to the xx group xxx carbon black limited company to understand the internship. xxx carbon black limited company was formerly xxx (group) shares, founded in 1964, the company is the first company in the world. Ltd, founded in 1964, has a history of more than 40 years of carbon black production, is the first carbon black industry enterprises listed on the mainland of China, is one of the four major carbon black production bases in the country planned by the Ministry of Chemical Industry, is a large-scale carbon black factory in the five southern provinces, and is one of the 500 chemical enterprises in China, belongs to the state second-class enterprises, with import and export business rights. At present, with an annual production capacity of 60,000 tons of carbon black, of which xx brand carbon black n220, n330, n660 is the provincial and ministerial excellent products, enjoying the distinction of export exemption, recognized by many merchants and the relevant certification departments, xx brand carbon black has been awarded the honorary title of Guangdong Province trademark.
This is an enterprise engaged in the use of industrial waste products to produce carbon black, in the production process, the production of a large number of polluting emissions (waste gas, waste water, solid waste), in the production process of this enterprise on the production of a large number of polluting emissions produced by the use of different methods of treatment and the use of equipment to treat and deal with it. According to the description of an insider, for wastewater, the sewage from the production process is gathered into the sewage treatment tank to prohibit the discharge of its content exceeding the standard and to be treated again. At the same time, this enterprise also purchased foreign advanced equipment (such as toc-4100) for the whole process of automated monitoring, in order to meet the national emission standards, the exhaust gas is mainly produced a large amount of sulfur dioxide, this enterprise set up a set of desulfurization and dust removal system to deal with it, for the solid waste is classified and recycling and can be recycled to achieve the effect of making the best use of the material, in the process of production waste heat, can be utilized to respond to the national energy saving and emission reduction. The waste heat generated in the production process can also be utilized to respond to the national slogan of energy saving and emission reduction.
On the afternoon of xx, 20xx, we went to the XX City Water Company Hedong Water Plant to study. The purpose of water purification treatment is to remove suspended substances in the raw water, colloidal substances, cocci, algae, heavy metals, organic pollutants and other harmful components, so that the purified water quality to meet the needs of domestic water or industrial water. Frequently used water purification process: natural precipitation, oxidation (pre-oxidation) aeration, coagulation precipitation or clarification, air flotation, filtration, adsorption, etc., and others have a variety of removal of algae, iron, manganese, fluorine and other special treatment processes.
The process of water purification: raw water pretreatment --- coagulation and precipitation or clarification --- filtration --- disinfection
On the morning of xx, 20xx, we came to the first wastewater treatment plant in xx city to learn. This plant mainly deals with the domestic sewage in the urban area of XX. The sewage treatment plant is mainly to collect the domestic sewage of XX urban area in sections, and then through gravity flow to mix the sewage to stay to stay to the plant, and then to treat it. The plant's treatment of domestic sewage has the following six objects: garbage, sediment, organic matter, phosphorus, nitrogen, coliform liver bacteria.
The plant's process for treating wastewater has three main parts: 1. pre-treatment of domestic wastewater 2. treatment in the biological pool (anaerobic, anoxic, oxygen depletion) 3. sedimentation.
The process is:
Pre-treatment: mainly to remove large particle size also remove some of the organic material, such as leaves, plastic bags in the water, sand. Generally use the grid room (coarse and fine), sand sedimentation tank, sedimentation tank.
Secondary treatment: the main process of removing organic, using a variety of processes, such as traditional activated sludge, oxidation ditch method, biofilter, bio-turntable, bio-fluidized bed method.
Tertiary treatment: some of the main process to remove nitrogen and phosphorus effect is not good, the need for another half of the process, so that the nitrogen and phosphorus to meet the discharge standards, and finally discharged before the disinfection, the choice of methods according to the economic conditions, including chlorination disinfection, ozone disinfection, ultraviolet disinfection.
In the afternoon of xx, 20xx, we went to xx city xx brand cement limited company, the leadership of the plant explained to us the raw materials needed for cement production: limestone, silicate, clay, oil shale and so on. Its principle: two grinding and one burning.
The main aspects of its production process are:
1, crushing and pre-homogenization
2, raw material preparation
3, raw material homogenization
4, pre-decomposition
5, firing of cement clinker
6, cement powder cane
7, cement packaging
Cement plant production enterprises are also A kind of high energy consumption and high pollution industry, its production process will emit a large amount of dust recognized and produce a lot of noise pollution. Therefore, the enterprise has introduced electrostatic dust removal system and cyclone dust removal system to deal with dust. In dealing with noise, centralized control and sealing control methods are used to reduce noise pollution to the environment.
Through this study to the factories, we further understand the use of our professional knowledge in production practice, so that we can further deepen the understanding of professional knowledge. At the same time, we are also alert to the fact that we can only learn the professional knowledge, in order to meet the requirements of the future engaged in this work. In order to have more employment opportunities in the future, I have to work harder to expand their horizons, learn more practical knowledge, deepen the knowledge of the profession outside the study.
Part II
Learning environmental engineering major almost a year, but for the future of this profession to engage in the work is still very vague, through this understanding of the internship, so that I already have a general understanding of the work of this profession to engage in.
I. Purpose of the internship:
Awareness internship is a very important part of the practical aspects of students' university studies. Internship is a necessary course for every college student, it not only allows us to learn a lot of knowledge in the classroom simply can not learn, but also enables us to broaden our horizons, increase insight, for us to better apply the knowledge we have learned to the actual work to lay a solid foundation.
Second, the specific content of the internship:
(a) xx Water Conservancy Commission xxx Hydrology and Water Resources Survey Bureau
Internship time: the morning of xx, xx, 20xx
1, Overview:
xxx Hydrology and Water Resources Survey Bureau is the national second-class monitoring station, *** monitoring 30 projects, the same level of the entire monitoring station. xx main stream **** there are 7, mainly responsible for hydrology and water resources survey, main stream and major tributaries of hydrology, river, sediment, water quality basic data collection, in the hydrology and water resources monitoring and evaluation, water resources demonstration, water environment monitoring, water quality analysis, water calculation, hydrometeorological forecasting, hydrological analysis and calculation, flood control and other aspects of the technical equipment is advanced and strong.
2, the treatment process:
The monitoring station has more laboratories, according to its different functions can be divided into: biochemical room, aseptic room, quality control room, digestion room, balance room, instrumentation one, two, three rooms, atomic fluorescence room, atomic absorption room, meteorological chromatography room, sediment analysis room, sediment balance room. Each laboratory is equipped with relevant instruments.
The daily monitoring program includes five parameters (water temperature, PH, dissolved oxygen, conductivity, turbidity), ammonia nitrogen, chemical oxygen demand, permanganate index, total organic carbon (TOC), total nitrogen, total phosphorus, nitrate nitrogen, phosphate, cyanide, fluoride, chloride, phenolics, oils, mercury and other heavy metals, fecal coliform bacteria, and the total number of bacteria.
And the monitoring station is well-equipped, such as GM-0.35 diaphragm vacuum pump, PXD-12 digital ion meter, AA-400 atomic absorption meter, AFS-900 atomic fluorescence spectrophotometer, gas chromatograph, mercury meter, oil meter, DDSJ-380 conductivity meter, PHSJ-4A7 PH meter, ion chromatography, UV-754 UV-visible spectrophotometer, 7.5mm UV-754 spectrophotometer. Visible Spectrophotometer, 7-225 Visible Spectrophotometer, AE200 Electronic Balance, GPI-2 Gas Purification Instrument, LDZX-40BI Stereoscopic This information comes from the Secretarial Fanwen type automatic electric pressure steamer, YXZ-type automatic constant-temperature water bath, PSH525 Biochemical Incubator, TG16-WS High-speed Centrifuge, BOD5 Constant-temperature Incubator, Moore Elements Series Ultra-pure water machine, BOD-220B fast tester, Z-2000 atomic absorption meter and a series of advanced instruments. According to the high stationmaster said, which is worth more than a million instruments are not a few.
3, the monitoring station workflow:
quality system operation → business contract acceptance → preparation of plans, procedures → environmental facilities to confirm the confirmation of instrumentation to ensure that the use of the validity of the period → personnel to confirm the sampling \ to send samples → sample receipt, processing → lead out of the samples, according to the standard (role of the guidebook) testing → data, records control → report preparation → service customers
(B) xx Hydrological Station
Internship time: the morning of xx, xx, 20xx
1, Overview:
xx Hydrological Station is located in the xx side, which is known as the national level of hydrological stations, the world's first-class station of UNESCO, the world also occupies a fairly important position, and at the same time, it is a long history has also added a lot of charm for its own. The station was built in the Republic of China, is the earliest, but also one of the most important hydrological stations in China, and played an extremely important role during the flood control in 1998. The station has been playing an important role in hydrology since the day it was in operation, and has left us a lot of valuable data so far.
The hydrological station is a grass-roots hydrological organization that observes and collects hydrological and meteorological data of rivers, lakes, reservoirs and other water bodies. Hydrological station observation of hydrological elements, including water level, flow rate, flow direction, waves, sand content, water temperature, ice, groundwater, water quality, etc.; meteorological elements, including precipitation, evaporation, air temperature, humidity, air pressure and wind. According to the test items are divided into hydrological stations for observing water level, flow or other items; water level stations for observing only water level or measuring precipitation; rainfall stations for observing only precipitation; water quality stations for measuring only water quality; groundwater well stations for measuring only groundwater; sediment stations for measuring river sediment; and evaporation stations for observing evaporation from the water surface and evaporation from the land surface. In China, hydrological stations are categorized into basic stations and specialized stations according to their nature. The former's task is to collect measured data, provide information to explore the basic hydrological laws, to meet the needs of water resources assessment, hydrological calculations, hydrological intelligence, hydrological forecasting and hydrological scientific research.
2, process:
The station in the main in a kilometer of the river spread 10 monitoring points, in the water depth of 30 centimeters to take a sample, and then began to analyze.
(C) xxx off automatic water quality monitoring station
Internship time: 20xx xx morning
1, Overview:
20xx x month, the State Environmental Monitoring General Station in xx city Nanjin pass began to start construction of an automatic water quality monitoring station, xx basin xx off section of real-time monitoring of water quality. 20xx x month, xx day began trial operation. Trial operation was started on xx, and the station is now hosted and operated by the State General Station. The monitoring programs include permanganate index, total organic carbon, ammonia nitrogen, pH, conductivity, turbidity, dissolved oxygen, and water temperature. In 20xx, the total station added total phosphorus, total nitrogen and fecal coliform bacteria in the three monitoring projects, making the detection program more complete.
2, process:
The monitoring station through the implementation of automatic monitoring of surface water, water quality can be implemented in real-time continuous monitoring and remote monitoring, to achieve a timely grasp of the water quality of the main river basin water quality conditions of the key cross-section of the water body, to achieve the early warning report of the major or watershed water pollution incidents, to solve the cross-administrative dispute over water pollution incidents. Automatic water quality monitoring station monitoring frequency can be based on the situation of continuous monitoring or monitoring every few hours, managers can set up through the control software.
At present, the frequency of sampling and analyzing once every 4 hours, each day each monitoring can get 6 monitoring results, these data are transmitted to the site through the telephone line near the environmental monitoring station, to facilitate the maintenance of automatic monitoring, management personnel to understand its operating conditions, data transmission via satellite transmission to the China Environmental Monitoring Terminal, so that the national environmental protection management department to understand the water quality status of the key sections in time. The data is transmitted to the China Environmental Monitoring General Station through satellite transmission, so that the national environmental management department can know the water quality condition of each key section in time.
Automatic water quality monitoring technology is a set of analytical instruments, water, control and data transmission and processing system engineering, the entire automatic water quality monitoring system consists of the following parts:
1, automatic monitoring station station;
2, the external water collection system;
3, the water distribution system and the internal pre-treatment of water samples;
4, instrumentation Part;
5, communication and control system;
6, center software;
7, auxiliary facilities.
(D) xx Group xx plant sewage treatment station
Internship: 20xx xx morning
1, Overview:
Shuanghui Group is our country's enterprises, but also one of the country's top five hundred, but there is an undeniable fact is that it is also a sewage big, so our country has a strict standard for its sewage discharge. This time we are visiting a sewage treatment station inside its xx plant. xx This plant is not big, but it contains all the production wastewater in its whole production process, so it is also a key management unit in xx. Therefore, in 2004, the xx municipal government ordered the plant to establish the sewage treatment station, **** investment of 7-8 million yuan, set up by the director of the station, the daily treatment capacity of 2,200 tons. After treatment, the COD content of its wastewater reaches the national level I emission standard, less than 100mg/L, and the treatment efficiency reaches 97%-98%.
2, treatment process:
Activated sludge method, also known as biochemical treatment, anaerobic and oxygen depletion, activated sludge process is the most widely used wastewater aerobic biochemical treatment technology.
(E) xx city xx water plant
Internship time: 20xx xx morning
1, overview
The plant is the seventies of the project, completed in the mid-eighties, the use of the eighties of the tap water production process, that is, a more advanced automation process. xx city has four water plants, a water plant is the The first water plant is the one used by Three Gorges University, on the hill next to the TV tower, established before the liberation, but the process is more aging. The second water plant is in the place of Yangqiao Road, which was repaired in the 1960s. Later, due to the development of the city of xx, and has repaired the third and fourth water plant.
2, process:
Water from the Guanzhuang Reservoir, piped to the first pumping station (water pumping station) and the first pumping station before the addition of chlorine to kill algae, plants and shellfish. The water is then sent through the primary pump house to the in-plant treatment system. Usually after mixing (in the source water by adding an appropriate amount of aluminum chloride, commonly known as alum) reaction, precipitation, filtration, disinfection and other treatment processes, each process with the corresponding structures (such as sedimentation tanks, filtration tanks, clearing tanks, etc.), post-filtration disinfection is generally chlorine and ammonia, added disinfectant water through the clearing tank, and stay in the pool for about one hour to become qualified drinking water, and then through the secondary pumping room (water transfer pump room) pressurization It is then pressurized by the secondary pump room (water transfer pump room) and transported to the city pipeline network for drinking and production use.
(F) Yihua Chemical
Internship time: 20xx x month xx morning
1, Overview:
The plant is the last stop of our understanding of the internship, but also an important stop, because the treatment of waste gas is also an important part of our environmental engineering research. The exhaust gas treatment device in the plant is quite advanced, and the dust removal rate can reach 95%.
2, process:
Desulphurization and dust removal. First through the electrostatic dust removal, electrostatic dust removal equipment is the use of electrostatic force from the gas stream to separate the suspended particles of a method, and the separation of dust particles with low energy consumption, the general treatment of 1000m3/h of dusty gases consume only 0.1-0.8kw.H, the loss of air pressure is also very small. Because of the relatively large electrostatic force acting on the particles, even for very small particles can be effectively captured, so the dust removal effect is very good, dust removal rate of more than 95%.
Third, the internship summary:
Through this understanding of the internship, I have a preliminary understanding of environmental engineering, but also full of hope for their employment prospects. Because the survival of mankind depends on the environment, and the protection of the environment is about to fall on our shoulders, so we must seriously study the professional knowledge and master the professional knowledge, in practice to hone their own, so that the learned professional knowledge can be integrated, know how to learn to use, so that they become a qualified environmental workers, a qualified environmental engineers!
Part III
First, the purpose of the internship
Through this internship, the theoretical knowledge of the classroom and the actual operation of the practice of combining, to understand the similarities and differences between them, but also a clearer understanding of the theoretical learning and practical operation of the gap between the existence of what.
As we all know, production internship is a very important part of the practical aspects of the students' university studies, internship is a must for every university graduate, it not only allows us to learn a lot of knowledge in the classroom can not be learned, but also enables us to broaden the horizons, and grow insights, for us to better apply the knowledge we have learned to the actual work of laying a solid foundation. Through the production internship to make me more in-depth contact with professional knowledge, further understanding of the actual environmental protection work, to understand the environmental governance process of the problems and the theory and practice of the conflict of the difficult problems, and through the writing of the internship report, so that I can learn to comprehensively apply the knowledge I have learned to improve the ability to analyze and solve professional problems.
Second, the content of the internship arrangement
1, June 7, 20xx Kunming City, the second sewage treatment plant
2, June 8, 20xx Forestry Vocational College campus garbage survey and treatment program design
4, June 10, 20xx Wujiatang Wetland Park in Guandu District, Kunming City
5, June 11, 20xx Internship Summary and internship content summary PPT production
Third, the internship group staffing
Group leader:
Group members:
Fourth, the content of the internship
(a) sewage treatment plant visit
1, internship time: 8:00-14:00
2, internship location: Kunming City, Guannan Avenue Kunming City, the second sewage treatment plant
3, internship content
June 7 morning we gathered in front of the school training building and then the school bus will take us to the sewage treatment plant, into the plant we first visited the office building is located in the lobby of the various types of data on the display wall, and then came to the conference room plant chief engineer gave us a detailed explanation of the plant's process and the actual operation of the theoretical knowledge. Theoretical knowledge, then, all our students were divided into two groups by the two engineering led us to visit the whole plant. In the process of the visit, we encountered problems in a timely manner to the engineers to ask questions, engineers also patiently explained to us.
Kunming City, the second sewage treatment plant was built and put into use in 1995, the plant is located in the official South Avenue, is mainly responsible for the treatment of Guandu District around the residents of domestic sewage, the treatment of water design value of up to 100,000 tons / day,
The quality of the treated water to meet the national standards GB18918-2002 - Class B standards, the treated water discharged to the Panlong River. This wastewater treatment plant utilizes the A2/O process.
The plant's effluent and influent water indicators are also based on the relevant provisions of the State has clear indicators, influent water quality: BOD = 180mg / LSS = 250mg / LT-N = 45mg / LT-P = 5mg / L, effluent water quality: BOD15mg / LSS15mg / LT-N8mg / LT-P1mg / L.
1, into the Water pump room
Role: to raise the height of the sewage, is behind the process from high to low to form a height difference, so that the smooth operation.
The second plant intake pumps using five submersible sewage pumps, pumps single flow rate of 0.43m3 / s, 4 with a standby. PLC system can be based on the water level control pumps on and off, but also to make the pumps according to the alternating mode of operation. One of the pumps is equipped with an electric control valve on the outlet pipe, can play a fine-tuning role in controlling the water level. If the incoming water is greater than the design flow, the water level is abnormally high, will be overflowed through the overflow channel, the overflow level is 3.40m.
2, grille
Role: sewage treatment works in the installation of the main equipment is the grille machine it is used to intercept, remove the sewage in the floating material.
The second plant set up: coarse grating well, divided into two grids, each grid width of 2 m, length 9 m. The north side of the front pool with a fixed grille, chain drive, rake teeth in the grating on the movement of sewage grating machine; the south side of the front pool with a chain drive, continuous filtering type of turnover grille. The sewage plant coarse grating: coarse grating spacing 40mm; fine grating: grating spacing 6mm, the plant coarse grating is used to start a 30-minute operation.
3, sedimentation tank
Role: sedimentation tank through the principle of gravity sedimentation, to remove mud and other suspended matter in the sewage. The sedimentation tank is generally equipped with a mud scraper, which runs continuously at a very slow speed.
Plant 2 setup: the sedimentation tank used in this wastewater plant is an advection type sedimentation tank, which has a large amount of vortex in the tank, and on which a large sound of water flow is heard.
4, anaerobic tank
Sewage from the sand sedimentation tank and 5% to 10% of the influent flow sludge mixing into two parallel anaerobic tanks, in the top of each cell set a vertical mixer each group of pool volume 4426.1m3. anaerobic tank retention time of about 2.12h (Q = 10104m3 / d) and 1.42h (Q = 15104m3 / d). ).
The water mixture from the anaerobic tank flows to four circular nitrification and denitrification tanks with a diameter of 70m through the distribution wells respectively.
Activated sludge is a kind of flocculent sludge, whose main component is microorganism aerobic bacteria. Sludge concentration indirectly reflects the number of aerobic bacteria. It is enough to visualize the growth of aerobic bacteria, but also provides a basis for the determination of the amount of reflux sludge.
Whether there is enough oxygen in the aerobic zone is crucial to the completion of the nitrification reaction, and oxygen is also a key factor in the normal life of aerobic bacteria.
5, concentric circle activated sludge method
The part of the sewage treatment project is the most important treatment structure, for the biological treatment of sewage to provide places and conditions.
In the A2/O treatment process of this visit, the biological treatment tank is divided into three zones: anaerobic, anoxic and aerobic. Due to the different process conditions in each zone, the growth of microbial species is not exactly the same, so that the treatment function of each zone is not the same, through the combination of these different functions, to achieve the treatment of phosphorus and nitrogen removal.
Denitrification area of the sewage continues to enter the pool outer ring of nitrification area (or aeration area). Nitrification area with a turn of the brush oxygenation, turn of the brush in addition to oxygenation, but also has to push the flow and mixing effect. Control from the nitrification area to denitrification area to provide reflux of the mixture, reflux ratio is 400%.
6, sedimentation tank
Specifications: from the sedimentation tank distribution wells flowed to four sedimentation tanks, each pool diameter 53m; effective volume of 4961.4m3; total height of 8.25m; hydraulic retention time of 4.76h (Q = 10,104m3 / d) or 3.17h (Q = 15,104m3 / d), the surface load of precipitation for the 0.47m3/ ( m2/h).
7, sludge treatment
Return sludge pumping room: return sludge pumping room adopts semi-circular arrangement scheme, the inner diameter of the pumping room is 6.9m, the outer diameter is 12.5m, and the sludge collection pool area is 43m2
Residual sludge pumping room: the residual sludge pumping room is equipped with a sludge tank with a capacity of 6.75m4.5m2.64m, and the tank is equipped with three submersible pumps, and the lifted sludge is discharged to the sludge thickening through the underground sludge pipeline. The sludge is discharged to the sludge thickening tank for sludge treatment through the underground sludge pipeline. Pump operation is controlled by a timer, and the flow rate of each pump is Q=1550m3/d.
The equipment for sludge treatment in the second plant is as long as there are: conditioning tanks, sludge feed pumps, dosing system, dosing tanks, dosing pumps, belt-type filter presses and filter presses. After treatment for you to dewater the sludge will be exported, the sludge will be transported to the outskirts of Kunming City, the waste treatment plant for landfill disposal.
The end of the visit to the sewage treatment plant, we have a great deal to gain, in the classroom learning is mainly based on theoretical knowledge, such an internship allows us to the theoretical knowledge and the actual close combination of our classroom knowledge to get a more comprehensive and specific experience.
(B) school campus garbage survey and treatment method design
1, internship time: June 8, 9:30 a.m. 4:00 p.m.
2, internship location: to the main campus garbage gathering point
1) students and teachers living in the garbage
General classification: tin cans, aluminum cans, glass bottles and jars, plastic bottles, foil packets, batteries, etc.; paper package, batteries, etc.; paper: newspapers, books, magazines, paper cups, cartons and non-greasy waste paper, etc.; old clothes; disposable tableware: disposable lunch boxes, chopsticks, instant noodle containers, etc.; plastic bags: all kinds of plastic bags and various types of food, etc.
2) The college cafeteria produces garbage
Various types of students eat leftovers and a large number of disposable tableware (lunch boxes and disposable chopsticks); cinder, various types of food processing waste and a variety of washing water, and so on.
3) Other types
Construction waste materials generated by various construction sites; all kinds of garbage left behind by vehicles and their students; residual cigarette butts and so on.
We collected and investigated the various collection points of garbage on campus and conducted a survey of the approximate types.
For general garbage, because there are still a variety of debris within the general student living garbage so it is necessary to make a cleanup before further processing. First of all, the collected garbage will be manually cleaned up, cleaned up can be recycled plastic bottles or iron, aluminum cans and discarded books, iron, etc., can be sent to the scrap buying station for a certain economic value; the remaining garbage can be manually sifted again, the conditions of the place can be mechanically sifted to a certain size of the garbage to be further subdivided; the last remaining garbage is generally directly concentrated to the designated location The remaining garbage is usually sent directly to the designated place for landfill or incineration.
For resource waste, we should recycle as much as possible.
Through the survey, we understand the situation of garbage disposal on campus and the whole post-processing situation.
(C) Water Treatment Station
The water treatment station in our school is relatively small, and the treated sewage mainly comes from the living sewage of the boys' and girls' apartments, the living sewage of the new library, and the living sewage of the school training center. The treated water is partly reused for watering flowers and partly reused for toilet water in the apartment dormitories.
The method of water treatment in the school is also relatively simple, and the whole visit only took about 15 minutes.
In this water treatment process, there are several equipments that are not put into the daily operation of water treatment, such as membrane reactor and contact disinfection tank. These are because the cost of running the equipment is too expensive and not suitable for practical use.
(D) Wujiatang Wetland Park
1, internship time: June 10, 8:00 am 14:30 pm
2, internship location: Guandu District, Kunming Wujia Township, Wujiatang Wetland Park
3, internship content:
Wujiatang Wetland Park, located in Guandu District, Kunming, Liujia Township, and the territory of the Xiaobanqiao, from the south to the Baoxiang River, north to the Wujiatang Wetland Park. Baoxiang River, north to Wujia River and west to Dianchi Pond. It is mainly composed of water surface, mudflat and marsh, covering an area of about 1,300 acres. Construction began on March 15 this year, is the first wetland park in Kunming. The former barren mudflats reproduce the beauty of Dianchi Cui Yu Danxia, three spring willows, nine summer hibiscus.
Wetlands for sewage treatment, compared with other fast water treatment technology has its irreplaceable role, wetlands with its unique adsorption, degradation and exclusion of pollutants in the water, suspended solids and nutrients in the function of potential pollutants into resources. This transformation process through the physical, chemical and biological three forms **** with the role of the ecological cycle system. And the wetland itself brings the beautification of the environment, the ability to evolve the air is other treatment technology can not have.
For wetlands in this province there are different divisions: according to the principle of construction there are artificial wetlands and natural wetlands, but generally speaking, it refers to the natural or artificial, permanent or temporary swamps, wetlands, peatlands or water zones, with or static or mobile, or freshwater, semi-saline or brackish water, including low tide depth of not more than six meters of water.
In the international wetland protection list in China **** there are 36 wetlands are included in its protection list, of which Yunnan has four. This shows that in Yunnan we have rich wetland resources and with the existence of wetlands and bring a wealth of plant and animal resources. Wetlands have a very good effect on the purification of sewage, an extraordinary significance for environmental protection, and an important significance for the protection of biodiversity. Protecting wetland resources has also become an important task for our environmental workers.
Wetland treatment methods are: physical action, chemical action, biological action to the evolution of sewage treatment. Physical action is mainly wetland filtration, deposition and adsorption; chemical action is mainly adsorbed in the wetland pores of organic microorganisms to provide an acidic environment, transformation and degradation of heavy metals in the water; biological action, including microbial action and plant action, the former refers to the wetland soil and the inter-root soil hygiene, such as bacterial degradation of pollutants, and the latter refers to the growth of macrophytes such as aloe vera, irises and algae in the growth process The latter refers to the role of large plants such as aloe vera and algae in the growth process to draw nutrients from the sewage, thus making purification. Biological action is the main way of wetland environmental purification function.
Wujiatang Wetland Park is mainly divided into five areas: 1) original ecological wetland reserve; 2) artificial wetland reserve; 3) wetland display area; 4) native plant landscape area; 5) entrance function area; 6) water center area; 7) wetland plant cultivation base; 8) park supporting facilities area.
V. Internship summary
A short week of internship soon came to an end, although the time is very short, but the feeling is that there is still a great harvest. In the last day of the training week we summarize the week's internship memories, and to make PPT show the way and students recall the whole internship process, in the internship summary of our group achieved good results, for which we are very happy,
The whole process of internship, summarize the harvest is probably the following:
1, mentality change
The school life is relatively more than the school life is relatively more than the school life. p> School life is relatively simple, without us worrying about a lot of issues, the school life, learning to keep up with can be, and in the actual operation of the middle is not, in practice, we have to consider more, timely change of mind will allow us to work more smoothly.
2, plan to do.
With a clear plan, the goal is clear, so that the work will not be confused. Our internship is to follow the teacher's arrangements step by step, but before this, the teacher's preparation is very hard and meticulous, but also because of this, only when we have our practical training in a structured and organized smooth progress. Thorough and meticulous planning, which is in addition to the knowledge of the textbook, we have to learn from the teacher.
3, do not take things small and do not do.
Do big things and small things have different stages, to do big things, small things must be done. We are the stage of internship, do some tedious small things, it is necessary. These small things are worth doing. Things are small, but the process is vital.
Although the one-week internship is very short, and the learning is very limited, but it is enough for me to realize that only through continuous efforts to learn more knowledge, I can gradually improve myself and enhance myself.