A/O Buried Package Domestic wastewater treatment plant/Buried Package Hotel/School Wastewater treatment plant

Description:

with economic and population growth, nature pollution is more and more valued by people, based on summary of domestic sewage treatment equipment operation experience at home and abroad ,combine our company’s scientific achievements and engineering practice, designed a whole set of organic wastewater treatment equipment which can be buried underground, which adopted the advanced technique and manufacturing technology at home and abroad 1n late of 1990s,produed the LHC series of sewage treatment equipment, which main raw material is fiberglass, stainless steel, its main purpose is make the domestic sewage and similar industrial organic sewage to achieve user's emissions standards after disposed by this equipment. This equipment mainly used in treating domestic sewage in Residential area (including villa district), senior hotel ,complex office and various of public hospital buildings, the water quality can achieve national emission standard after treated by the equipment. A full set of equipment can be buried in the ground, is also known as "integrated waste water treatment equipment."
our integrated wastewater treatment equipment adopt international advanced biological treatment processes, set to remove BOD5, COD, NH3-N in one, with the advantage of Technical performance stable and reliable, good treatment effect, save investment, small occupy area, and easy maintenance.

Features:

1, can set on the ground or underground, if underground, above the surface can be used as green or other land, no housing and heating, insulation.

2, two biological contact oxidation process are the use of plug-flow bio-contact oxidation, this treatment is better than completely mixed or two series completely mixed biological contact oxidation pool. And small size than the activated sludge tank, the water quality of adaptability, resistance to shock loading performance, effluent quality and stability, does not produce sludge bulking. Pool using the new flexible three-dimensional packing, large surface area, microbial and easy to hang film, stripping, in the same organic load conditions, high removal rate of organic matter, oxygen in the air can increase the solubility in water.

3, biochemical use of biological contact oxidation pool, its relatively low volume loading of filler, microbial oxidation stage in their broken, less sludge production, only three months (90 days) above a row of mud (using suction truck or dehydration cake transport out).

4, The integration of deodorizing sewage treatment facilities in addition to the conventional way of high-altitude exhaust, coming with a soil deodorization measures.

5, the entire processing system is equipped with fully automatic equipment control systems and electrical equipment failure alarm system, safe and reliable operation, usually does not require expert management generally, only timely maintenance and repair of equipment.

Scope of Application

1. Hotels, restaurants, nursing homes, hospitals.

2. Residential areas, village, town.

3. Stations, airports, port terminals and ship.

4. Factories, mines, military, tourist, scenic.

5. All kinds of industrial wastewater similar with domestic sewage.

Technics processing:

 The collected domestic sewage first pass by bar screen to remove bigger suspended solids,floater and ribbon matter, then equalize sewage volume and quality in equalize tank, in order to prevent the suspended solid settling in equalize tank, equip with punch aeration pipe in the bottom of equalize tank, adopting interval aeration. then the sewage enter into the integrated sewage treatment equipment by lifting pump. First enter into first settling tank to make primary sediment, then enter into anaerobic A grade tank, in A grade anaerobic tank , due to the sewage organism content is high, microorganism in anaerobic condition, now the microorganism is facultative , they will transform the organic nitrogen into ammonia nitrogen, at the same time, using organic carbon source as electron donor, to make the NO₂-N,NO₃-N translate into N_2, and using part of carbon source and ammonia nitrogen synthesis new cellular material. so A grade tank with certain function of organic matter removal , relieve the organic load of follow-up O grade biochemical tank, to benefit to nitrification, and rely on high concentration organism in sewage , to finish denitrification, finally eliminate the nitrogen eutrophication pollution. By A grade anaerobic tank biochemical action, the sewage still some organism and higher ammonia nitrogen, in order to make organism further aerobic degradation, at the same time, when carbonification tend to finish, nitrification can smoothly going on , thus set O grade aerobic tank.

 The outlet water from A anaerobic grade tank will flow into O grade tank, the O grade biochemical treatment rely on autotrophic bacteria finish, they utilize organism resolve generate inorganic carbon or carbon dioxide in air as nutrients source, to make the ammonia nitrogen translate into NO₂-N,NO₃-N. a part of O grade aerobic tank outlet water enter into settling tank to sediment, another part backflow to anaerobic tank to proceed A grade tank to proceed internal recycle, to realize nitrifying purpose. the whole biochemical treatment process all rely on many kinds of microorganism to finish.

The dissolved oxygen is control about 0.5mg/l in A grade anaerobic tank, above 2.0mg/l in O grade aerobic tank, air water ratio 12:1; part of outlet water in O grade tank backflow to A grade tank, reflux ratio is 200%; part flow into vertical settling tank, to make solid liquid separation; the outlet water in settling tank after solid liquid separation, will be discharge out directly.

1,Bar screen  

 Main used in intercept big block floater in sewage, to guarantee follow-up processing structures normal operation and effective reduce load, supply guarantee for system long term normal operation, grid bar gap is 5mm, size:500*300mm.

2, Equalize tank

Due to each time water quality,volume is different, the peak flow rate of average flow rate 2~8 times, thus sewage treatment system steady operation, equalize water volume and homogenize water quality, build-in sewage pump and backflow measure, equip with aeration system to proceed pre-aeration, to guarantee certain rated flow rate lifting to integrated sewage treatment equipments and follow-up treatment steady, lifting pump chose 2pcs QW type sewage pump.

3. Package sewage treatment plants

This technical process adopt integrated sewage treatment plants, such plants mainly aiming at domestic sewage and industrial organic sewage, mainly adopt the mature bio-chemical treatment contact oxidation manner, total composed of the following 5 parts:

(1)A grade anaerobic tank (Hydrolysis acidify tank)

 In order to control the dissolved oxygen in A grade biochemical tank about 0.5mg/l, adopting interval aeration. The padding in A grade biochemical tank adopting new type elastic padding, height is 2.0m. such padding with the advantage of no easy blocking,light weight,big specific surface area, treatment effect steady etc, easy to maintenance and change , retention time>3.5hours.

(2)O grade aerobic tank

The O grade biochemical tank equip with columnar biology carrier padding, this padding specific surface area is big, is 16-20 times comparing with common biological padding, keep higher biomass, to reach the purpose of removing organic pollutant, aeration device adopting air blower and micropore aerator, the oxygen utilization rate is above 30, effective save operation cost. Retention time >7 hours, air water ratio about 12:1.

(3)Second settling tank

 The sewage still contain large number of suspended solid after treated by O grade biochemical, in order to make the effluent water SS meet up discharge standard, adopting vertical settling tank to make solid liquid separation, surface load 1.0m³/m²·hr. according to actual condition to make part of sludge backflow to A anaerobic tank, increase the sludge concentration in O grade tank to improve removal efficiency.

(4)cleaning water tank

(5)Air blower room

Air blower set in the air blower room, equip with silencer.

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