The main purpose of domestic sewage treatment is to remove COD organic matter in water, which is mainly degraded by biological methods and microorganisms in activated sludge. At present, this is a relatively economical and compatible sewage treatment process, which is mainly through domestic sewage. Water quality, water quantity, and different environmental conditions are judged to select a sewage treatment process that has a profound impact on investment and operating costs.
It has the characteristics of acid and alkali corrosion resistance, aging resistance and maintenance-free.

●The equipment is filled with P28 nutritive strains of Japanese products, which can supply the biological bacteria in the anaerobic pool above 5 degrees Celsius, and improve the effect of sewage degradation with sufficient nutrition.
●Using movable carrier packing technology, the equipment is designed in modules, which can be combined according to the sewage discharge amount of shirts. The footprint is small, and the installation site can be selected flexibly.
●The equipment is equipped with a microcomputer automatic control system, which is easy to operate, easy to manage and maintain, and does not need special guards.
●Grill pool: responsible for intercepting floating miscellaneous goods in the sewage to ensure the normal operation of subsequent disposal equipment
●Conditioning pool: used to regulate water quality and quantity, the volume of ordinary conditioning pool is 6-10 times of the hourly disposal capacity, and it is lifted to the anoxic pool by lifting pump.
Anoxic pool: The anoxic pool is set up for denitrification treatment. The sewage separated by the grid is pumped into the anoxic pool by the sewage lifting pump in the conditioning pool to mix with the returning nitrification liquid in the pool, and placed in the anoxic pool NZP-II type filler is used as the carrier of denitrifying bacteria. It has good removal effect on nitrogen, phosphorus and sulfide, and the residence time is 2 hours. Phosphorus and denitrification purposes.
Biological contact oxidation pool: divided into two stages, with a total biochemical time of 6 hours. The first stage uses NZP-I type packing, which has excellent water flow characteristics. The second stage uses movable carrier packing Japanese technology. , which is conducive to microbial growth. The physical load is up to 30kgBOD/M3.d, which is more than 7 times that of ordinary soft packing. The biochemical pool adopts the microporous explosion in the central corridor, and the sewage circulates in the biochemical pool from time to time, fully interacting with the biological phase on the packing. Contact to achieve rapid degradation of organic matter.
●Secondary settling tank: The biochemical sewage enters the secondary settling tank. The designed surface load of the secondary settling tank is 0.9-1.2M3/M2.h. The effect is better, and the sludge in the secondary settling tank is airlifted to the sludge tank.
●Disinfection pool: According to the national standard: TJ14-74 manufacturing, the residence time of the disinfection pool is 30 minutes, the disinfectant uses solid chlorine pellets or bleaching powder, or aerospace sterilizing stone. (Only QK-DM type equipment has a disinfection pool).
●Sludge tank: The sludge intercepted by the grid and the sludge from the secondary settling tank all enter the sludge tank. A sludge digestion system is installed in the sludge tank, and the supernatant of the sludge tank returns to the conditioning tank.
The fan and the power distribution cabinet are both installed in the equipment room. In the general equipment room, two fans are set to operate alternately. When one fan fails, the other can start the equipment and continue to run; when the sewage is cut off, the fan It can automatically stop running to maintain the normal growth of organisms.