CN103896406A

CN103896406A - Method for treating sewage by using engineering microbes

Info

Publication number: CN103896406A
Application number: CN201310487168.5A
Authority: CN
Inventors: 曹惠忠; 李卓坪
Original assignee: Nanjing Kesheng Environmental Protection Technology Co Ltd
Current assignee: Nanjing Kesheng Environmental Protection Technology Co Ltd
Priority date: 2013-10-18
Filing date: 2013-10-18
Publication date: 2014-07-02

Abstract

The invention provides a process for treating sewage by using microbes. According to the process, pollutants in the sewage are deeply degraded by using a microbial composite preparation consisting of multiple microbes, and the treatment process is divided into three stages, wherein the initial dynamic culture stage generally needs 7-15 days; the dynamic culture stage generally needs 8-10 days, and the dynamic running stage realizes continuous sewage treatment after the dynamic culture stage. The method can safely, harmlessly, thoroughly and efficiently complete water purification; when microbial treatment is started, sludge is not needed to culture the microbes; the microbial composite preparation is clean, nontoxic and harmless, and does not cause secondary pollution; the process is simple in flow, convenient in maintenance, simple and convenient in operation, low in investment and low in running cost. The method can be used for treating high-concentration organic wastewater, garbage waste liquid, domestic sewage and the like.

Description

The method that engineered microbes is disposed of sewage

Technical field

The present invention relates to a kind of sewage water treatment method, particularly relate to a kind of technique of utilizing microbial preparation to administer sewage.

Background technology

Current, the treatment process of China's municipal effluent mainly adopts conventional activated sludge method and mud embrane method, when primary starting, need introduce a large amount of active sludge provenances, cultivation domestication is longer, starts slower, and sludge reflux system need to be set, sludge bulking also may occur, once occur, consequence is serious, meanwhile, sewage foam affects charging efficiency.Moreover disposable construction investment is large, processing cost is high, and current consumption is larger.

Summary of the invention

The object of the present invention is to provide a kind of investment little, running cost is low, can carry out safe, harmless, thoroughly, efficiently the microbial preparation that utilizes of purification of water quality and administer the technique of sewage.

The present invention utilizes the technique of microbial treatment sewage to divide following three phases to carry out:

1) the dynamic cultivation stage at initial stage, the pH value of first controlling sewage is 6～9,4～30 ℃ of temperature, then sewage is introduced to treatment zone, the oxygen in sewage is promoted to 1.5～2.0mg/L by circulation and aerator by pump, drops into microorganism complex, and input amount is 20～80g/m ³sewage, through the cultured continuously of 7～10 days, treated water after up to standard started discharge, now showed the success of dynamic cultivation stage at initial stage.

2) in the dynamic cultivation stage, sewage is entered to treatment zone, process continuously and discharge, and continue to add microorganism complex, within one day, add three times, otal investment is 10～50g/m ³sewage, and protect that to pull dirty oxygen content in water be 1.5～2.0mg/L, the residence time of sewage in treatment zone is 6～12 hours, shows dynamic cultivation success, and maintains 8～10 days treatment times.

3) in the dynamic operation stage, successively dispose of sewage every day, and to keep dirty oxygen content in water be 1.5-2.0mg/L, and the residence time of sewage in treatment zone is 6～8 hours, carries out like this uninterrupted sewage disposal, enters normal operation mode.

Wherein, it forms microorganism complex by weight percentage, yeast bacteria 5～30%, milk-acid bacteria 1～5%, actinomycetes 2～10%, nitrifier 5～15%, denitrifying bacterium 5～18%, nitrite bacteria 0～15%, photosynthetic bacteria 5～15%, ammonia oxidation bacteria 0～12%, Ammonifying bacteria 0～15%, the dry bacterium 15～30% of gemma, Pseudomonas 2～8%, methanogen 0～9%.Above microorganism is prior art, selects different microorganism combinations according to different sewage, forms the microbial compound preparation that is suitable for processing such sewage.

The present invention utilizes its advantage of technique of microbial treatment sewage to be, once this microbial compound preparation drops in sewage, can in the short period of time, be " activated ", microorganism after " activation " is through how much multiple propagation, organism in sewage is had to extremely strong biodegradability, microbial species group configuration is reasonable, technical process is simple, be convenient to safeguard, easy and simple to handle, nontoxic, harmless, do not produce the solid microbial of secondary pollution, energy safety, thoroughly, complete efficiently purification of water quality, and one-time investment is few, processing cost is low, be suitable for processing all kinds of sewage.

Embodiment

It is 100m that embodiment 1:2013 has carried out processing the water yield in the Nanjing six directions April to August every day ³plant area's sanitary sewage purifies industrial experimentation engineering on the spot.The composition of complex microorganism preparations by weight percentage ratio meter is:

Yeast 25%; Milk-acid bacteria 5%; Actinomycetes 10%; Nitrifier 10%; Denitrifying bacterium 5%; Genus bacillus 25%; Photosynthetic bacteria 10%; Ammonia oxidation bacteria 5%; Ammonifying bacteria 5%

Improvement technique is:

1) the dynamic cultivation stage at initial stage, first the pH value of controlling sewage is 6～9, and 15～25 ℃ of temperature, then introduce treatment zone by sewage, the oxygen in sewage is promoted to 1.5～2.0mg/L. input microorganism complex by circulation and aerator by pump, and input amount is l0g/m ³sewage, through the cultivation of 12 days, treated water after up to standard reached surface water GB3838-2002 IV-V class standard, starts discharge;

2) the dynamic cultivation stage, sewage is introduced to treatment zone, process continuously and discharge, and add microorganism complex, within one day, add secondary, otal investment is 8g/m3 sewage, and to keep dirty oxygen content in water be 1.5～2.0mg/L, the residence time of sewage in treatment zone is 10 hours, maintains 10 days treatment times;

3) in the dynamic operation stage, successively dispose of sewage every day, and add microorganism complex, within one day, adds secondary, and otal investment is 6g/m ³sewage, and to keep dirty oxygen content in water be 1.5～2.0mg/L, the residence time of sewage in treatment zone is 8 hours, carries out like this continual sewage disposal.

Claims

1. a kind of method of refuse landfill running, comprises that the accumulation of (1) one deck refuse rubbish is filled; (2) surface of one deck refuse rubbish hides by gunny cloth; (3) after for some time, remove gunny cloth coverture; (4) on one deck junk, can continue to topple over one deck junk.

2. coverture gunny cloth according to claim 1, can arrange tiling one by one by polylith, and adjacent coverture gunny cloth can link together.

3. coverture gunny cloth according to claim 1, can connect by modes such as sewing up, bind, nail.

4. How It Works according to claim 1, removes before coverture gunny cloth, the connector between gunny cloth need be removed, and takes the gunny cloth connecting apart.