【正文】 SL intercepting pipes and part of the old city pipe the wastewater treatment plant selfrunning, stable operation, 16,000 tons of water into the stage day, the pollutant index COD, NH3N and so have to meet emission sewage treatment industrial processes(1)between the coarse grid Coarse grid in the water before pumping stations, sewage into the plant to remove larger particles of impurities, safe and stable operation of the pump design flow is 3325m3 / h, the main equipment within this structure there are rotary grill.(2)water pumping station Advantages of sewage from between the coarse grid to flow out into the water pumping stations, pumping stations simple and pact structure, the selection of sewage submersible centrifugal pumps, according to the staff said that the pump has not plugtype runner, low efficiency and high energy consumption, while the effective treatment of sewage also saves resources, and its design flow of 3325m3 / the initial treatment of sewage pumped into the fine grid between.(3)between the fine grid Fine grid in the room equipped with a mechanical fine grid, auger pactors and other equipment used to handle small particles of garbage, which was filtered out of the garbage landfill loading uniform to a specified location。which is still inside the bacteria at the same time denitrification, nitrification produce mutual foam product, followed by precipitation of particles blowing blower to prevent the accumulation of sand, so to dispose of the soil and design flow is 3325m3 / h.(4)cyclone grit chamber The main device is a cyclone grit chamber sandwater separator, the advantage of small size, grit effective, easy to install and so Flow 3325 m3 / h grit chamber diameter , depth of 4m.(5)metering equipment There are many instruments after grit chamber, an electromagnetic flowmeter after grit chamber, sewage flow into the plant can be continuously monitored, and set water quality monitoring instruments, such as PH meter, thermometer, SS meter, the signal transmitted to the central control measure room, to prevent any flaws in.(6)Select the anaerobic pond Anaerobic outdoor pool has a slowmoving selection submersible mixer, return sludge and sewage tank in contact with mixed reactions, can achieve part of the role of phosphorus, and improve the properties of the activated sludge, but also the separation of both aerobic and anaerobic bacteria flow 1250m3 / h, pool effective volume 3925 m3 / h.(7)Orbal oxidation ditch Aubert oxidation ditch, it is elliptical reinforced concrete pool, divided into pool is divided into three annular channel, turn sewage into the outer channel, the channel and inside the channel, and finally by the center of the island and into the sedimentation tank with water flow 1250m3 / h, every seat effective volume 11000m3, the mixture concentration g / l, the design depth of , HRT and oxidation ditch is a core part of the entire processing system, its main function is to make the cultivation of domesticated activated sludge degradation, adsorption, aggregation of organic matter, and through the action of bacteria so that the suspended particles and dissolved particles tend to precipitate, resorted to water The organic content is seat is installed oxidation ditch aeration plate spinning disc 10 sets, outside the channel dissolved oxygen control in / l, in the meantime oxidation, nitrification and intermediate channel and an outer channel dissolved oxygen controlled at 1mg / l and 2mg / l, of organic matter in sewage further oxidation, to ensure the organic content of the effluent to meet the design requirements.(8)sedimentation Water will be discharged into the oxidation ditch treatment after sedimentation tanks, sedimentation tanks using radial flow sedimentation tank, water center, surrounded by water, the diameter D = 38m, a total of with wells located two blocks, through contact with sewage into the pool after seat settling ponds located around the drive fullbridge scraping suction machine, sedimentation tank sludge and sludge pumping station to flow 1813m3 / h, maximum surface load m3 / , singlecell pool depth of 4m, the residence time of .(9)contact tank To ensure the cleanliness of the water due to the standards required to be disinfected so, it set up contact with the cell holder 1: 1813 m3 / h flow rate, contact time 30min, effective contact volume 1056 m3, the effective depth of project uses chlorine dioxide disinfection, contact tank responsible for wastewater effluent dosing point sewage pond in the front reflux 1813 m3 / h, the average amount of chlorine 8 mg / l, a single effective yield chlorine / h.(10)reflux and sludge pumping station As part of the water will precipitate some sludge, so the return sludge pump submersible pump, to enhance the use of sludge submersible centrifugal pumps, construction simple and