Integrated wastewater treatment equipment used in:
The main means of treatment is the use of biochemical treatment technology contact oxidation method, combined with the design of integrated domestic wastewater treatment equipment is mainly domestic sewage and similar industrial organic wastewater treatment of water quality parameters according to the general quality of domestic wastewater water calculations, the influent BOD5 according to the 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 water flow to the contact oxidation pool 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 uses 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 of TJ14-74 standards for 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 tank and disinfection device can change the dosage according to the size of the water continuously, to achieve more water more dosage, less water less dosage of the purpose, the need for other devices can be formulated separately. (If used for industrial wastewater, disinfection tank and disinfection device can not.)
5. Sludge aerobic digestion pool
The remaining sludge discharged from the sedimentation tank is stabilized by aerobic digestion in the pool 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). Sludge aerobic digestion pool upper supernatant reflux device, so that the supernatant overflow to the hydrolysis acidification pool.