Can be used to treat domestic sewage.
Integrated wastewater treatment equipment is a sedimentation tank, I, II contact oxidation tank, the second sedimentation tank, sludge tank centralized equipment, and in the I, II contact oxidation tank in the blast aeration, so that the contact oxidation method and the activated sludge method is effectively combined, at the same time, with the advantages of the two, and to overcome the shortcomings of the two, so that the level of wastewater treatment is further improved.
Introduction
Domestic and foreign sewage treatment process is used in many, which is mainly divided into two kinds of activated sludge and biofilm method, we commonly common ordinary aeration, oxidation ditch method, A/B method, A2/O method belongs to the former, the biological carousel, contact oxidation method belongs to the latter. Integrated wastewater treatment equipment is a sedimentation tank, I, II contact oxidation tank, the second sedimentation tank, sludge tank centralized equipment, and in the I, II contact oxidation tank in the blast aeration, so that the contact oxidation method and the activated sludge method effectively combined, while having the advantages of the two, and to overcome the shortcomings of the two, so as to further improve the level of wastewater treatment.
Advantages
1, strong resistance to shock load, the average residence time of the contact oxidation method is more than 6 hours.
2, with the ability to remove nitrogen and phosphorus, and can be adjusted through the structure of the equipment to achieve the ability to deal with industrial wastewater, domestic sewage, municipal wastewater.
3, the contact oxidation tank filler for the combination of soft filler, lightweight, high strength, stable physicochemical properties, large specific surface area, biofilm adhesion ability, sewage and biofilm contact efficiency is high.
4, the contact oxidation tank using aerator for aeration, so that the fiber bundles continue to drift, aeration and uniformity, microbial growth and maturity, with the characteristics of the activated sludge method.
5, stable effluent water quality, low sludge production and easy to handle.
6, submersible pumps can be set in the equipment, reduce engineering investment.
7, equipment can be set on the ground, can also be buried in the ground. Buried in the ground, the upper part of the overlay can be used for landscaping, the plant covers an area of less, less ground structures.
8, easy to complete the automatic control, management and operation is simple.
9, the equipment can be connected to the car into a mobile integrated sewage treatment plant.
Disadvantages
1. Unfavorable maintenance, equipment failure, it is not convenient to overhaul and replace. This is usually what bothers homeowners the most.
2. Adaptability to the environment, winter anti-freeze, summer flood prevention, the north needs to be buried deeper, and insulation.
3. Due to the limitations of the equipment, the equipment can only be used in projects with relatively small amounts of wastewater.
Scope of application
Integrated wastewater treatment equipment is suitable for residential areas, villages, villages and towns, office buildings, shopping malls, hotels, restaurants, sanatoriums, institutions, schools, troops, hospitals, highways, railroads, factories, mines, tourist attractions, such as domestic wastewater and similar slaughter, aquatic products, food and so on. Small and medium-sized industrial organic wastewater treatment and reuse. The sewage treated by the equipment, the water quality to meet the national sewage treatment standards for comprehensive discharge of B standards.
Executive standard
1, urban sewage treatment plant pollutant concentration emission standards GB18918-2002
2, medical institutions, sewage discharge standards GB18466-2005
Process selection
1, A/O process
2, SBR process
3, CASS process
4, MBR process
Applications
The main means of treatment is the use of biochemical treatment technology contact oxidation, combined with the design of integrated domestic sewage treatment equipment is mainly for domestic wastewater and industrial organic wastewater treatment and the like Water quality Parameters calculated according to the general quality of domestic sewage water, influent BOD5 200mg / L.
The main components: 1. hydrolysis acidification tank; 2. contact oxidation tank; 3. impurity sedimentation tank; 4. disinfection treatment; 5. sludge aerobic digestion tank.
1. Hydrolysis acidification tank
The process is mainly dealt with before the sewage treatment pre-treatment of wastewater, the wastewater in the water for a certain amount of anaerobic fermentation, the sewage biochemistry to improve the sewage, which is a more important step before the sewage treatment, can directly affect the efficiency of the later sewage treatment and processing time, you can maximize the efficiency of the sewage treatment and reduce the consumption.
2. Contact oxidation tank
Oxidation tank according to the degree of pollution of water treatment is divided into several levels, ordinary and enhanced. Generally judged according to the treatment time. Processing time is not greater than four hours on the use of ordinary oxidation tank, processing time between 4-6 hours of the use of enhanced oxidation tank. The main use of hydrolysis acidification pool effluent flow to the contact oxidation tank for biochemical treatment. Most of the organic matter in the original sewage is degraded and purified here, and the aerobic bacteria take the filler as the carrier, use the organic matter in the sewage as the food, and decompose the organic matter in the sewage into inorganic salts, so as to achieve the purpose of purification. The survival of aerobic bacteria, there must be enough oxygen, that is, there is enough dissolved oxygen in the sewage to achieve the purpose of biochemical treatment. Aerobic pool air provided by the fan, the pool using a new type of elastic three-dimensional filler, the filler surface area ratio, long service life, easy to hang film, corrosion resistance, the bottom of the pool using a rotary mixing aerator, so that the transfer rate of dissolved oxygen is high, and at the same time have the advantages of light weight, not aging, not easy to block, long service life, and so on. Contact pool gas-water ratio of about 12:1. (0.5-5 m3 / h contact pool for the second level)
3. Impurity sedimentation tank
Sewage after biological contact oxidation tank treatment of the effluent from the flow into the sedimentation tank, and further precipitation to remove the shedding of the biofilm and part of the organic and inorganic small particles, the sedimentation tank is based on the principle of gravity, when the sewage containing suspended solids from the bottom of the upward flow, the effect of gravity, will be the material to precipitate. Sedimentation tank is based on the principle of gravity. The upper part of the sedimentation tank is equipped with adjustable outlet weir to adjust the water level; the lower part is equipped with conical sedimentation area and sludge gas device, the gas source is provided by the fan, and the sludge is transported to the sludge aerobic digestion tank by gas lifting.
4. Disinfection
Disinfection pool according to the norms «TJ14-74» standard 30 minutes, if the hospital sewage, disinfection pool to increase the residence time to 1-1.5 hours. My company uses chlorine dioxide disinfection device, disinfection pool and disinfection device can change the dosage according to the size of the water continuously, to achieve more water and more drugs, less water and less drugs for the purpose of needing other devices can be formulated separately. (If used for industrial wastewater, disinfection tank and disinfection device can not.)
5. Sludge aerobic digestion tank
Sedimentation tank discharged by the remaining sludge in the tank aerobic digestion stabilization treatment to reduce the volume of sludge and improve the stability of sludge. After aerobic digestion of sludge volume is small, cleanup can be used from the sludge tank inspection holes to the bottom of the sludge tank suction trucks can be transported after pumping (half a year to clean up once). The upper part of the sludge aerobic digestion tank is equipped with supernatant reflux device, so that the supernatant overflow to the hydrolysis acidification tank.