CN1278516A

CN1278516A - Artesian sewage treating process

Info

Publication number: CN1278516A
Application number: CN00110777A
Authority: CN
Inventors: 何宝财
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-08-10
Filing date: 2000-08-10
Publication date: 2001-01-03

Abstract

The sewage treatment process includes the steps of cyclone sand-removing, anaerobic biological treatment, aerobic biological treatment and settling water-discharging, etc., which is characterized by that the sewage is passed through the anaerobic digestion pool which possesses alternatively-arranged upper and lower partions and degrading biological membrane in its interior, its top is covered with heat-insulating layer, and the aerobic digestion pool whose interior possesses high-density soft biological membrane to make active sludge separation under the condition of aeration, then the sediment sludge being in the pool can be completely returned into anaerobic digestion pool, and mixed with naerobic sludge. Said invention uses anaerobic degradation as main measure, and uses aerobic degradation as auxiliary measure, and can integratively treat sludge and sewage, and can convert the sludge into fertilizer.

Description

Artesian sewage treating process

The invention belongs to a kind of sewage water treatment method, particularly a kind of SY-A ⁸/ O ²Artesian sewage treating process.

At present, all sewage works all are the technology of determining sewage disposal according to condition of water quality, and sewage treatment process has AB method, A/D method, A substantially ²/ O method, O/O method, SBR method etc., the sewage work that builds up according to these technologies, the working cost of sewage per ton is generally more than 5 maos, though therefore some Sewage Plant has been built up, current consumption is big, the working cost height, therefore the short circuit operation of having to can not finely finish the target of sewage disposal.

The purpose of this invention is to provide a kind of artesian sewage treating process, is the investment of assisting, reduce in a large number aerobic equipment based on anaerobic degradation, with aerobic degradation; Reduce working cost, save electric energy, the postprecipitation mud of will degrading is turned waste into wealth, and is converted into bio-fertilizer, improves its use value.

Sewage treatment process provided by the invention is as follows: it comprises earlier sewage being introduced regulates in the well, is promoted to then and carries out desanding in the swirler, and the sewage after the desanding carries out anaerobic biological treatment, carries out aerobe then and handles, at last by the settling bowl water outlet.Its technical characterictic is: in the anaerobic biological treatment processing step, sewage is provided with lower clapboard on the staggered multiple tracks by anaerobic digester in anaerobic digester, in the pond degradation biological film is set simultaneously, for guaranteeing temperature in the pond, covering and heat insulating layer on the pond; In degradation process, drop into yeast and the biological startup of multienzyme body agent, make the rapid numerous life of yeast, guarantee biological degradation; 80% solid substance (SS) in the sewage deposits in anaerobic pond, all the other solid substances of 20% (SS) enter in the Aerobic Pond again carries out a biological disposal upon, high-density software microbial film is set in aerobic digestion tank, carrying out active sludge under aeration condition separates, settled sludge in this pond all is back in the anaerobic digester, mixes with anaerobic sludge; Like this, both realized the purpose of dephosphorization denitrogenation, again the bio-fertilizer that mud is changed into; The ratio of the sewage capacity in the sewage capacity in the anaerobic digester and the aerobic digestion tank is 8: 2.

Advantage of the present invention is:

1, significantly reduces investment cost and working cost.Sewage disposal is auxilliary based on anaerobic degradation with aerobic degradation, compares with the traditional wastewater treatment process and reduces by 40% aerobic equipment; Owing to take muddy water close-coupled processing, reduced simultaneously a series of facility investments such as mud dehydrations; Adopt the sewage gravity flow in the Sewage Plant, reduce the input of a lot of pumps; Comparison can reduce 70% with conventional Sewage Plant steel consumption; Floor space is little simultaneously, the utilization ratio height.Compare with the traditional wastewater treatment process, the past power consumption is too big, and working cost is too high, and the present invention saves a large amount of electric energy, and water running expense per ton reduces significantly.2, turn waste into wealth, realize recycling sludge.Mud in the sewage is converted into bio-fertilizer, turns waste into wealth, improve basic use value.

Provide specific embodiment below in conjunction with accompanying drawing:

Fig. 1 is a process flow diagram of the present invention.

Fig. 2 is provided with synoptic diagram for the last lower clapboard of purification tank in the anaerobic digester.

Embodiment: see Fig. 1-2,1, at first sewage collecting is gone into to regulate well.Sewage is underground, thereby regulates well and also be located at undergroundly, and it is a water collecting basin, is the works better that guarantees lift pump, needs to remove the flap in the sewage, therefore in regulating well 1-2 road grid is set, so that flap is leached.2, by lift pump sewage is risen in the swirler then, the sand in the sewage is removed, avoid the sand in the sewage to enter deposition in the Sewage Plant, thereby guarantee the quality of bio-fertilizer.3, the sewage after the desanding enters anaerobic digester (A ⁸The pond) in, anaerobic digester is made up by some purification tanks, see Fig. 2, cell wall is built by laying bricks or stones by materials such as cement and is formed, groove depth 5-8 rice, upright staggered upper spacer and lower clapboard are set in each groove, sewage forms flowing of the state of wriggling up and down during by upper and lower dividing plate, make solid substance (SS) sedimentation under the obstruction of dividing plate in the sewage, make water constantly with settled mud hand over molten, roll, make mud not have sedimentary dead band, make mud more increase activity, for biochemical reaction has been created the ideal condition, in purification tank, also realized the same water sepn of mud simultaneously.In each purification tank, install ball float bio-carrier or surface biological film.And dispose of sewage middle drop into yeast and the biological startup of multienzyme body agent in purification tank, under bio-carrier and biomembranous effect, making the interior a large amount of grease molecular breakdown of sewage is organic aliphatic acid, promotion anaerobic digestion pool inner water is with the acid fermentation of mud; And barms and multienzyme body are bred the yeast in the mud rapidly, can guarantee the amount amount of every cubic metre of dominant bacteria of sewage, have guaranteed the biological degradation of mud, and mud contract pond is converted into biological organic fertilizer.In order to guarantee envrionment temperature and the anaerobism Working environment in anaerobic digester, must be on each purification tank topped thermal insulation layer, for example after adding a cover cover plate on the pond, the soil thermal insulation layer that topped again 0.1-1 rice is thick makes that working temperature remains on 17 ℃-50 ℃ in the pond; The degraded digestion time is for being no less than 18 hours, and 4, the sewage after anaerobic digester is degraded enters aerobic digestion tank (O ²The pond), the sewage capacity in the anaerobic digester is 8: 2 with the ratio of the sewage capacity of aerobic digestion tank, and the degraded digestion time in aerobic digestion tank is 2:8 with the ratio of the degraded digestion time in anaerobic digester.High-density software microbial film and aerator are set in aerobic digestion tank, and sewage adopts microbial film to separate its residue under aeration condition; Drop into the biological startup of photosynthetic bacteria and multienzyme body agent simultaneously; But photosynthetic bacteria can hundreds of millions of numerous life on microbial film doubly under the biological short energy that starts agent of multienzyme body like this, and the nitrifier of himself is ramp simultaneously also, is that the complete biologic chain of dominant bacteria can be descended at short notice and can form the short of enzyme with the photosynthetic bacteria.Strengthen its night to organic degradation capability.In whole backflow anaerobic digesters, aerobic sludge is realized reasonable proportioning with anaerobic sludge by mixing to the sedimentary mud of institute, a large amount of photosynthetic bacterias is passed back into breed work done in the anaerobic digester after degrading in this pond.Aeration operation in this pond can be adopted periodic running according to the moisture storage capacity in the aeration tank, and solid substance (SS) content is few in the sewage like this, saves the energy again, makes the working cost of sewage per ton lower.5, last sewage enters settling bowl, and the mud in the sewage is in suspended state, for reducing the content of mud in the water, carries out sedimentation in this pond, and settled mud all is back to the front end in the anaerobic digester.And water is emitted and is got final product after treatment.

Carry out sewage disposal by sewage treatment process provided by the invention, the technical indicator before and after its sewage disposal is as follows:

Before the processing:

The chemical oxygen demand of sewage (COD) 1100mg/L

The biological oxygen demand (BOD) of sewage (BOD) 450mg ∥ 1L

Solid content in the sewage (SS) 640mg/L

After the processing

The COD clearance is more than 95%, less than 100mg/L

The BOD clearance is more than 95%, less than 30mg/L

The SS clearance is more than 96%, less than 30mg/L

Annotate: SY-technology sign.

A ⁸-indicate at anaerobic zone SS, COD degraded 80%.

O ²-indicate at aerobic zone SS, COD degraded 20%.

Claims

1, a kind of artesian sewage treating process, it comprises steps such as eddy flow desanding, anaerobic biological treatment, aerobe processing, sedimentation water outlet, it is characterized in that: in the anaerobic biological treatment processing step, sewage passes through anaerobic digester, lower clapboard on the staggered multiple tracks is set in anaerobic digester, in the pond degradation biological film is set simultaneously, for guaranteeing temperature in the pond, covering and heat insulating layer on the pond; In degradation process, drop into yeast and the biological startup of multienzyme body agent, make the rapid numerous life of yeast, guarantee biological degradation; High-density software microbial film is set in aerobic digestion tank, carries out active sludge and separate under aeration condition, the settled sludge in this pond all is back in the anaerobic digester, mixes with anaerobic sludge; The ratio of the sewage capacity in the sewage capacity in the anaerobic digester and the aerobic digestion tank is 8: 2.

2, sewage treatment process according to claim 1, it is characterized in that: the degraded digestion time of sewage in anaerobic digester is no less than 18 hours, and the ratio of the degraded digestion time in aerobic digestion tank and degraded digestion time in anaerobic digester is 2: 8.

3, sewage treatment process according to claim 1 is characterized in that: topped thermal insulation layer on anaerobic digester, the thickness of thermal insulation layer are 0.1-1 rice.