CN1769218A - Domestic sewage and fecal sewage in situ treatment process - Google Patents

Abstract

The invention discloses a technique method for in-situ treatment to domestic sewage and fecal sewage, which is characterized in: receiving said sewage and introducing into a reactor to form water environment of a constant water stage and inner loop comprising aeration- deposition- aeration- deposition aeration- deposition -disinfection (three aerations- three depositions- disinfection), adding JWEM composite bacterium into a receiving tank, adding microbe contacting material with coexisting of suspending phase and floating phase into a aeration oxidation ditch, multi-stage filtering-depositing, and sterilizing and decolouring. It can operate in new sewage treatment device and in modified anaerobic tank. The treated water can be used for afforestation and watering, and it eliminates a secondary pollution and realizes the sewage innocent treatment.

Description

Sanitary sewage and fecal sewage are carried out the processing method of in-situ treatment

Technical field

The present invention relates to the biological treatment of sewage, belong to the processing method of the in-situ treatment of sanitary sewage and fecal sewage.

Background technology

The traditional processing mode of city domestic sewage and fecal sewage is to enter septic tank through water drain, ight soil through the dilution, anaerobically fermenting, the part sterilization is after the urban sewage pipe network enters sewage work, water after second-stage treatment enters near water body, and the water after advanced treatment is reuse in addition then.

Septic tank is the concentrated structures of high concentrated organic wastewater, and waste water can produce a large amount of hydrogen sulfide H when anaerobically fermenting ₂S, ammonia NH ₃, methane CH ₄Etc. deleterious irritant gas, there are materials such as indoles, mercaptan, thioether, skatole to produce simultaneously.Therefore odor pollution is serious, need imbed undergroundly, and needs periodic cleaning, mediation.In summer high temperature season, southern area especially, the heat that anaerobic fermentation process produces is blasted harmful inflammable gas in the septic tank of relatively sealing situation also happens occasionally.Thereby the transformation of septic tank is extremely urgent.

At present the National urban wastewater treatment rate only is that 40%, 60% undressed waste water directly enters near water body, causes body eutrophication, and polluted underground water and soil, and pathogen enterobacteria is propagated, and directly is detrimental to health.

Secondly, because most municipal sewage treatment marketization and industrialization process slower development, the real economy benefit is very little.Existing Sewage Plant cost of sewage disposal height, mud is not dealt carefully with and safe disposal, still exists secondary pollution problem to be on the rise.

Summary of the invention

Proposition of the present invention is intended to the problem at above-mentioned existence, design a kind of processing method that makes life, fecal sewage obtain the in-situ treatment of decentralized, adopt the combined oxidation technology, with aeration-precipitation-aeration-precipitation-aeration-precipitation-sterilization, that is: so-called " three expose to the sun-three heavy-one sterilizations " treatment process is transformed existing septic tank, utilize the metabolic function of throwing in JWEM composite fungus agent and microorganism self, fecal sewage, sanitary sewage are carried out in-situ treatment, make high-enriched organics be degraded to simple inorganics, nitrogen N ₂, carbonic acid gas CO ₂With water H ₂O.Water after the purification can be flushed the toilet, and greening is irrigated, or enters external environment, or enters the outfall sewer net, has eliminated the secondary pollution of pollutent to atmosphere, water body, soil, has realized the less energy-consumption, low cost of sewage disposal, the target of innoxious and landscape.

Technical solution of the present invention is achieved in that

A kind of processing method of sanitary sewage and fecal sewage being carried out in-situ treatment, it is characterized in that: comprise described sewage collecting and introduce in the reaction unit, forms a step, in receiving tank wherein, add the step of JWEM composite fungus agent, storing is beneficial to the suspending phase of microbial survival and the sedimentary step of step, cascade filtration and the disinfected-decolorized step of the microorganism contact material that moving phase coexists in the aeration oxidation trough by the internal recycle water body environment of the permanent water level of aeration-precipitation-aeration-precipitation-aeration-precipitation-sterilization (three expose to the sun-three sink-sterilize) flow process formation.

Describedly put the suspending phase be beneficial to microbial survival and the microorganism contact material of moving phase coexistence comprises wood chip, plastic optical fibre ring or microbial film in the aeration oxidation trough, plastic optical fibre ring wherein lies in water bottom and floating at the water surface; Wood chip rises and falls in the bottom; Microbial film then swims in water body.

Described disinfected-decolorized step is to point to add gac in the disinfection trough and/or through ozone (O ₃) process of sewage being carried out strong oxidation.

Described reaction unit is a kind of grooved container, and the centre is divided into 1 by dividing plate ^#, 2 ^#, 3 ^#Aerator tank then is respectively 4 between the aerator tank ^#, 5 ^#, 6 ^#Be followed successively by 7 after the settling bath, settling bath ^#Disinfected-decolorized groove and 8 ^#Hopper has end sluice gate dividing plate in the settling bath, filtering net and waste pipe have aeration tube in the aerator tank, join with air-supply duct; Rising pipe in the hopper then joins with water pump.

Compared with prior art, the advantage of this law is conspicuous, when being applied to samll cities and towns' decentralized ight soil and domestic sewage treatment, has solved the environmental pollution of surface water, underground water and soil; Also solve urban life district cesspool sewage and entered the difficult problem that the municipal sewage plant need carry out terminal processing, sanitary sewage and fecal sewage are controlled in the source, realized in-situ treatment, handle the purpose of back zero release, simultaneously pathogenic mushroom and pathogenic micro-organism in ight soil and the sanitary sewage are controlled.

Processing method provided by the invention also can be transformed the back operation on former septic tank basis, supporting sewage treatment facility input is reduced.In addition, this technology has guaranteed the living environment of dominant bacteria in immobilized carrier in perseverance operation continuously under water, and stable, treatment effect is good, has health, safety, water saving, energy-saving advantages.

Description of drawings

Fig. 1 is sewage treatment process figure of the present invention.

Fig. 2 is a Sewage treatment systems water cycle principle schematic of the present invention.

Embodiment

Processing method provided by the invention mainly is the vital process by microorganism, and the complicated organism in life and the fecal sewage is converted into new microorganism cells and simple inorganics, removes organic purpose thereby reach.Microorganism is to rely on decomposing organic pollutant as the required matrix of its growth and breeding to the scavenging process of sanitary sewage, fecal sewage, by different path for transformation, macromole or baroque oxidation operation is decomposed into simple nitrogen N ₂, water and carbonic acid gas CO ₂, the energy that utilizes dissimilation to produce simultaneously makes microorganism obtain increasing, breeding, for further decomposing organic matter creates conditions.

The process of organic matter removal has comprised physics, chemistry, physical chemistry and biochemical reaction process, mainly is made of absorption removal stage and conversion degradation period.Microorganism adheres on fixation support, produces ammonia, hydrogen sulfide, methane, thiomethyl alcohol, dimethyl sulfide etc. and organic acid metabolite during anaerobic digestion, is oxidized to CO by different oxygen animalcule ₂+ H ₂O, ammonia, hydrogen sulfide etc. is oxidized to NO by autotrophic bacteria ₂ ^-, NO ₃ ^-, and SO ₄ ^2-Deng.By biological multi-stage oxidizing and alienation denitrification process, denitrogenation, de-carbon.Hold concurrently the oxygen bacterium under anoxia condition as polyP bacteria effect dephosphorization.Enzyme in the composite fungus agent and deodorizing bacterial classification such as coprophil degraded suppress the peculiar smell of indoles, mercaptan, skatole and realize deodorizing.

As shown in the figure, a kind of sanitary sewage and fecal sewage are carried out the processing method of in-situ treatment, its technical process is: first catalytic oxidation → first precipitation → the second catalytic oxidation → second precipitation → the three catalytic oxidations → filtering-depositing → disinfected-decolorized → water storage.

Its processing condition are: septic tank volume: 50M ³, band direct-connected motor, oxygenating machine and ozone machine

Operating temperature: minimum 8 ℃-23 ℃

Envrionment temperature :-15 ℃-45 ℃

PH： 6.5-9.0

Aeration oxygen-supplying amount: gas-water ratio 2.5-4: 1 V/V

Volumetric loading: 5.0-6.0kgCOD/m ³D

BOD ₅： 300-600mg/l

Bacterial concentration: 10 ⁵-10 ⁷Individual/ml

DO： 0.5-1.0mg/l

Biologic packing material: 20-40L

Bio-carrier: aerator tank volume 3/4V

Specific embodiment comprises:

(1) sanitary sewage and the ight soil water of flushing the toilet are removed floating matter through shed grate basket and are entered 1 ^#Contact-oxidation pool.JWEM composite fungus agent that adds and the microorganism acting in conjunction in sanitary sewage and the ight soil constantly increase biomass, through oxidation, nitrated, degraded, make the polymer organic pollutant change into simple inorganics, carbonic acid gas and water.

(2) the 2nd ^#, 3 ^#Oxidation trough all drops into a certain amount of immobilization biological carrier (floating with water), under logical oxygen aeration condition, doses the wood chip, plastic optical fibre ring and the microbial film that soaked with microbial inoculum in groove, forms the flowable state carrier.For aerobic, the oxygen of holding concurrently, anaerobion, algae and stable ecosystem of microfauna structure, make wastewater treatment remain optimum regime.

(3) all there is a settling bath each aerator tank back, constitutes anoxic and anaerobic environment through two-stage precipitation and one-level filtering-depositing, makes microorganism denitrogenation in denitrification process, polyP bacteria effect dephosphorization, and generate energy is synthetic for new cell simultaneously.

(4) through the nitrated de-carbon of tertiary oxidation, after three grades of denitrification for Removing Nitrogen, the dephosphorization, through ozone O ³Colibacillus and other pathogenic bacterium are killed in strong oxidation sterilizing, decolouring, again through charcoal absorption, and further decolouring, the water after the processing is transparent filbert, can be used for flushing the toilet, afforests, irrigates or directly discharging.

(5) the JWEM ecological microbial agent is the development of this enterprise and sells, and wherein contains the optimum combination of kind of bacterial classification surplus yeast, gemma, newborn bar, the seven big monoids 60 such as photosynthetic, nitrated and enzyme compound thereof.Composite fungus agent is fast breeding under optimum conditions, and rapid deodorization is arranged.Nontoxic, harmless, the easy domestication of microbial inoculum itself, easily cultivation, easily storage.In biological respinse, have active high, degradation capability is strong, the residence time is long, the little and impact-resistant characteristics of carrier of generation active mud content.

Claims (4)

1, a kind of processing method of sanitary sewage and fecal sewage being carried out in-situ treatment, it is characterized in that: comprise described sewage collecting and introduce in the reaction unit, form step by the internal recycle water body environment of the permanent water level of aeration-precipitation-aeration-precipitation-aeration-precipitation-sterilization (three expose to the sun-three sink-sterilize) flow process formation, in receiving tank wherein, add the step of JWEM composite fungus agent, storing is beneficial to the suspending phase of microbial survival and the step of the microorganism contact material that moving phase coexists in the aeration oxidation trough, sedimentary step of cascade filtration and disinfected-decolorized step.

2, processing method of sanitary sewage and fecal sewage being carried out in-situ treatment according to claim 1, it is characterized in that describedly putting the suspending phase be beneficial to microbial survival and the microorganism contact material of moving phase coexistence comprises wood chip, plastic optical fibre ring or microbial film in the aeration oxidation trough, plastic optical fibre ring wherein lies in water bottom and floating at the water surface; Wood chip rises and falls in the bottom; Microbial film then swims in water body.

3, according to claim 1 and 2 sanitary sewage and fecal sewage are carried out the processing method of in-situ treatment, it is characterized in that described disinfected-decolorized step is to point to add gac in the disinfection trough and/or through ozone (O ₃) process of sewage being carried out strong oxidation.

4, according to claim 1 sanitary sewage and fecal sewage are carried out the processing method of in-situ treatment, it is characterized in that described reaction unit is a kind of grooved container, middlely be divided into 1 by dividing plate ^#, 2 ^#, 3 ^#Aerator tank then is respectively 4 between the aerator tank ^#, 5 ^#, 6 ^#Be followed successively by 7 after the settling bath, settling bath ^#Disinfected-decolorized groove and 8 ^#Hopper has end sluice gate dividing plate in the settling bath, filtering net and waste pipe have aeration tube in the aerator tank, join with air-supply duct; Rising pipe in the hopper then joins with water pump.