CN113060907A - Method for treating urban severe polluted sewage - Google Patents
Method for treating urban severe polluted sewage Download PDFInfo
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- CN113060907A CN113060907A CN202110334461.2A CN202110334461A CN113060907A CN 113060907 A CN113060907 A CN 113060907A CN 202110334461 A CN202110334461 A CN 202110334461A CN 113060907 A CN113060907 A CN 113060907A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/322—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention provides a method for treating urban heavily polluted sewage, which belongs to the technical field of water purification and comprises the steps of collecting sediment at the bottom of the sewage, grinding the sediment, emulsifying oil stain at the top of the sewage, and mixing ground substances with emulsified liquid to obtain a material to be added. And adding a biological flocculant into the treated sewage to obtain an aggregate, extracting the aggregate, and respectively draining the rest supernatant into a plurality of microbial decomposition tanks for degradation. And mixing and stirring the aggregate and the biogas material, adding the mixture into the biogas pool, and adding the material to be added into the biogas pool after the preset time is reached. The aggregate formed in the method for treating the urban heavily polluted sewage is used for being matched with a biogas material to serve as a raw material for generating biogas by a biogas flora, and the supernatant is degraded by a plurality of microbial decomposers, so that the recovery and reutilization effects of the heavily polluted sewage are greatly improved and the capital investment for sewage purification is reduced through various targeted treatments.
Description
Technical Field
The invention belongs to the technical field of water purification, and particularly relates to a method for treating urban severe polluted sewage.
Background
The bottom of the heavily polluted urban sewage is provided with sediments, the top of the sediments floats with oil stains, and the middle part of the sewage floats with a large amount of suspended particles, so that how to purify and recycle the heavily polluted sewage is a problem to be solved urgently at present. The existing method firstly filters the sewage and then carries out biological and chemical treatment, and because more substances are dissolved in the sewage, the time required by the whole process is longer, and more importantly, the cost required by purification is higher.
Disclosure of Invention
The invention aims to provide a method for treating urban heavily polluted sewage, and aims to solve the problems of long time and high cost in purifying the heavily polluted sewage.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for treating the urban heavily polluted sewage comprises the following steps:
collecting sediment at the bottom of sewage, grinding, emulsifying oil stain at the top of the sewage, and mixing the ground substance with the emulsified liquid to obtain a material to be added;
adding a bioflocculant into the treated sewage to obtain an aggregate, extracting the aggregate, and respectively draining the rest supernatant into a plurality of microbial decomposition tanks for degradation;
and mixing and stirring the aggregate and the biogas material, adding the mixture into a biogas pool, and adding the material to be added into the biogas pool after the preset time is reached.
As another embodiment of the present application, the adding the mixed condensate and the biogas material into the biogas digester after mixing and stirring comprises:
communicating a gas storage tank with a methane outlet of a methane tank, and storing part of methane generated in the methane tank through the gas storage tank;
and a heating device is arranged on the outer wall of the methane tank and is communicated with the gas storage tank.
As another embodiment of the present application, the communicating the heating device with the gas storage tank includes:
and recovering tail gas generated by the combustion of the heating device and introducing the tail gas into the methane tank.
As another embodiment of the present application, the extracting the aggregate and respectively draining the remaining supernatant into a plurality of microbial decomposition tanks for degradation includes:
the outer wall of the microbial decomposition tank is provided with a heat insulation layer and a temperature control device, and the gas storage tank provides biogas for the combustion of the temperature control device.
As another embodiment of the present application, the adding a bioflocculant to the treated sewage to obtain an aggregate includes:
adding activated carbon into the treated sewage, and filtering the activated carbon after a specified time is reached;
and adding a coagulant aid and the biological flocculant into the sewage filtered by the activated carbon to obtain the aggregate.
As another embodiment of the present application, after the extracting the aggregate and respectively draining the remaining supernatant into a plurality of microbial decomposition tanks for degradation, the method further comprises:
and adding the degraded supernatant into the methane tank for adjusting the humidity of the materials in the methane tank.
As another embodiment of the present application, the adding the mixed condensate and the biogas material into the biogas digester after mixing and stirring comprises:
and adding a microbial culture material into the biogas material, stirring the biogas material and the aggregate, and adjusting the pH value of the stirred material to the proper pH value of the biogas flora.
As another embodiment of the present application, after mixing the milled substance with the emulsified liquid to obtain the material to be added, the method further comprises:
adding a degradation agent into the material to be added.
As another embodiment of the present application, the extracting the aggregate and respectively draining the remaining supernatant into a plurality of microbial decomposition tanks for degradation includes:
storing the supernatant in a liquid storage tank, guiding the supernatant in the liquid storage tank to a plurality of microbial decomposition tanks by a communicating pipe, and enabling liquid in the microbial decomposition tanks to flow back to the liquid storage tank by a return pipe;
and stirring the supernatant in the liquid storage tank.
As another embodiment of the present application, adding the material to be added into the methane tank after the preset time is reached includes:
and adding the materials to be added into the methane tank in several times.
The method for treating the urban severe polluted sewage has the beneficial effects that: compared with the prior art, the method for treating the urban severe polluted sewage comprises the steps of firstly grinding the sediment at the bottom of the sewage, and mixing the ground product with the oil stain after emulsification treatment to obtain the material to be added. Adding a biological flocculant into the treated sewage, forming supernatant and aggregates in the sewage under the action of the flocculant, and draining the supernatant into a plurality of microbial decomposition tanks for degradation. The aggregate is added into the methane tank after the methane material is mixed and stirred, and then the material to be added is added.
In this application, at first carried out corresponding processing to the bottom and the top of sewage, collected substances such as suspended particles in with sewage through the flocculating agent, the aggregate of formation is used for producing the raw materials of marsh gas flora as with the cooperation of marsh gas material, and the supernatant is then degraded by a plurality of microorganism decomposers, through the processing of multiple pertinence, very big improvement the effect of heavily polluting sewage recovery and recycle, reduced sewage purification's fund input.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a flow chart of a method for treating urban heavily polluted sewage according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a method for treating heavily polluted municipal sewage according to the present invention will now be described. The method for treating the urban heavily polluted sewage comprises the following steps:
and collecting sediment at the bottom of the sewage, grinding, emulsifying oil stain at the top of the sewage, and mixing the ground substance with the emulsified liquid to obtain the material to be added.
And adding a biological flocculant into the treated sewage to obtain an aggregate, extracting the aggregate, and respectively draining the rest supernatant into a plurality of microbial decomposition tanks for degradation.
And mixing and stirring the aggregate and the biogas material, adding the mixture into the biogas pool, and adding the material to be added into the biogas pool after the preset time is reached.
The method for treating the urban severe polluted sewage has the beneficial effects that: compared with the prior art, the method for treating the urban severe polluted sewage comprises the steps of firstly grinding the sediment at the bottom of the sewage, and mixing the ground product with the oil stain after emulsification treatment to obtain the material to be added. Adding a biological flocculant into the treated sewage, forming supernatant and aggregates in the sewage under the action of the flocculant, and draining the supernatant into a plurality of microbial decomposition tanks for degradation. The aggregate is added into the methane tank after the methane material is mixed and stirred, and then the material to be added is added.
In this application, at first carried out corresponding processing to the bottom and the top of sewage, collected material such as suspended particles in with sewage through the flocculating agent, the aggregate of formation is used for producing the raw materials of marsh gas flora as marsh gas with the cooperation of marsh gas material, and the supernatant is then degraded by a plurality of microorganism decomposers, through the processing of multiple pertinence, very big improvement the effect of heavily polluting sewage recovery and recycle, reduced the fund input of marsh gas raw materials.
When the methane is artificially prepared, abundant methane bacteria are needed, and if the decomposition effect of the methane bacteria is not available, various organic matters in the methane tank can not be decomposed to generate the methane. Therefore, enough methane bacteria (inoculum) need to be present in the methane fermentation start, and in rural areas, the excellent methane bacteria mainly exist in manure pit sludge, sewage sludge, marsh slag, marsh liquid and the like, and the mixed retting of the fermentation raw materials is the basic condition for producing the methane by methane fermentation.
As a specific implementation mode of the method for treating the urban heavily polluted sewage, the method for adding the mixed condensate and the biogas material into the biogas pool after mixing and stirring comprises the following steps:
the gas storage tank is communicated with a methane outlet of the methane tank, and part of methane generated in the methane tank is stored by the gas storage tank.
The heating device is arranged on the outer wall of the methane tank and is communicated with the gas storage tank.
The biogas fermentation temperature is 25 ℃ at normal temperature, 37 ℃ at medium temperature and 53 ℃ at high temperature. The common methane tank is fermented at normal temperature, the gas production rate is low, and the temperature fluctuation is large, which greatly influences the gas production rate. The northern area of China has cold climate, the gas production rate of the methane tank is low, and the gas production rate is still not ideal even in summer.
In order to generate biogas in a region with lower temperature, a plurality of heating devices can be arranged on the circumferential direction of the outer wall of the biogas digester at first, and the heating devices can generate heat through burning the biogas. For some cold regions, a mode of simultaneously carrying out biogas and electric heating can be selected. In order to facilitate timely and uniform heating of the methane tank, when the methane tank is constructed, a steel structure support is firstly erected, then concrete is poured, and a heat conduction layer is laid on the outer side surface after the concrete is solidified. Because the heating device comprises a plurality of nozzles under the normal condition, the area heated by the nozzles is smaller, and the steel structure is arranged to play a role of supporting, on the other hand, the uniformity of heating the methane tank can be ensured by virtue of the characteristic of higher heat conductivity coefficient of the metal material, and the heat conduction layer can further ensure the uniform transfer of heat.
In practical application, a gas storage tank is arranged on the outer side of the methane tank and is used for storing methane generated by the methane tank so as to provide energy for combustion of the heating device. The method combines the treatment of the heavily polluted sewage with the generation of the biogas, thereby not only protecting the environment, but also realizing the recovery and utilization of energy.
As a specific implementation mode of the method for treating the urban heavily polluted sewage, the step of communicating the heating device with the gas storage tank comprises the following steps:
and recovering tail gas generated by combustion of the heating device and introducing the tail gas into the methane tank.
Because the heating device needs to burn methane and oxygen, and most of the combustion products are carbon dioxide. And the marsh gas bacterial colony is mostly anaerobe, and the tail gas that will produce lets in the methane-generating pit, can make in the methane-generating pit be in the lower environment of oxygen on the one hand, and the gas temperature that on the other hand burning produced is higher to the temperature in the methane-generating pit has been improved. Biogas can be generated in the biogas pool and can be mixed with carbon dioxide, but the effective component in the biogas is methane, and the density of the carbon dioxide is higher than that of the methane, so that the separation of the biogas and the carbon dioxide can be realized.
As a specific implementation mode of the urban severe polluted sewage treatment method provided by the invention, the steps of extracting the aggregate and respectively guiding the residual supernatant into a plurality of microbial decomposers for degradation comprise:
the outer wall of the microbial decomposition tank is provided with a heat insulation layer and a temperature control device, and the gas storage tank provides biogas for the combustion of the temperature control device.
Corresponding to the regions with cold climate such as northern China, if the heating device is arranged only at the outer side of the methane tank, the generated heat can be quickly dissipated, and the good heating effect can not be achieved, thus leading to serious resource waste. Therefore, a heat preservation layer is arranged on the outer side of the methane tank, a heat preservation cavity is enclosed between the heat preservation layer and the outer wall of the methane tank, and the heating device is arranged in the heat preservation cavity. And an air supply pipe which penetrates through the heat preservation layer and is communicated with the heating device is arranged, and the air supply pipe is used for providing methane and oxygen for the heating device.
The heat that heating device produced can be isolated in the heat preservation to owing to set up the heat preservation, make the temperature in heat preservation chamber can be higher than external temperature, in order to guarantee the methane-generating pit in the temperature. The methane generated by the methane tank can be partially stored in the gas storage tank, the heating device does not need to consume other energy sources, the input of the energy sources is reduced, and more methane can be generated after the temperature of the methane tank is increased.
As a specific implementation mode of the method for treating the urban heavily polluted sewage, the step of adding the biological flocculant into the treated sewage to obtain an aggregate comprises the following steps:
adding activated carbon into the treated sewage, and filtering the activated carbon after the set time is reached.
Adding coagulant aid and biological flocculant into the sewage filtered by the activated carbon to obtain an aggregate.
There was much flotage and much unmanageable impurities dissolved in the supernatant before the bioflocculant was added. If the material in the supernatant is degraded only by the microbial decomposition tank, it takes a long time and the degradation is incomplete. For this purpose, activated carbon can be added to the supernatant first, the time required for the microbial degradation can be shortened by virtue of the adsorption effect of the activated carbon, and a coagulant aid can be added to the supernatant before the addition of the bioflocculant in order to ensure the flocculation effect.
In practical application, sewage can be drained into the reaction tank, activated carbon is firstly added, then coagulant aid and biological flocculant are added, standing is carried out after the addition is finished, supernatant on the top of the reaction tank is led out after the aggregates are precipitated at the bottom of the reaction tank, and the aggregates precipitated at the bottom are used for being mixed with biogas materials.
As a specific implementation manner of the method for treating the urban heavily polluted sewage, after the aggregate is extracted and the remaining supernatant is respectively drained into the plurality of microbial decomposers for degradation, the method further comprises the following steps:
and adding the degraded supernatant into the methane tank for adjusting the humidity of the materials in the methane tank.
Since the supernatant itself contains various substances, organic substances and heavy metal elements which cannot be purified still exist after the purification is completed through a plurality of microbial decomposition tanks. The raw materials in the methane tank are required to be in an environment with relative humidity when the methane is generated, and in order to save resources, the supernatant reaching the preset standard can be introduced into the methane tank so as to increase the humidity of the raw materials and reduce the waste of resources.
As a specific implementation mode of the method for treating the urban heavily polluted sewage, the method for adding the mixed condensate and the biogas material into the biogas pool after mixing and stirring comprises the following steps:
adding a microbial culture material into the biogas material, stirring the biogas material and the aggregate, and adjusting the pH value of the stirred material to the proper pH value of the biogas flora.
The biogas material is generally excrement, straw and the like, and although a certain amount of biogas flora exists in the biogas material, if the biogas material is directly mixed with the aggregate, the cultivation of the biogas flora is slow, and the biogas output in unit time is influenced. Therefore, microbial culture materials can be added into the biogas materials, and the microbial culture materials are raw materials for culturing microbes. By adding the microbial culture material into the biogas material, the problem that the number of microorganisms cannot be rapidly increased when the microorganisms directly contact with the aggregate can be avoided, and the time required for culturing the biogas flora is further shortened.
Bioflocculants are special high-molecular metabolites produced by microorganisms and capable of coagulating and precipitating solid suspended particles which are not easily degraded in liquid. The flocculant is a water treatment agent with high efficiency, low price, no toxicity and no secondary pollution, and can be widely applied to the fields of drinking water treatment, wastewater treatment, food industry, fermentation industry and the like. The bioflocculant is a typical environment-friendly functional material, adapts to the concept of the current sustainable development, and has important practical significance on human health and environmental protection.
After the bioflocculant is added, the aggregate is acidic or alkaline, and microorganisms in the bioflocculant do not have a decomposition function, so that solid suspended particles adsorbed by the bioflocculant are degraded by biogas flora, and the pH value of the aggregate needs to be adjusted before the aggregate is contacted with the biogas material in order to ensure that the aggregate can be used as a raw material for decomposing the biogas flora.
As a specific implementation mode of the method for treating the urban heavily polluted sewage, after the substances subjected to grinding and the emulsified liquid are mixed to obtain the materials to be added, the method further comprises the following steps:
adding a degradation agent into the material to be added.
Two immiscible liquids, such as oil and water, are separated into two layers in a container, with less dense oil in the upper layer and more dense water in the lower layer. If a suitable surfactant is added, the oil is dispersed in water under vigorous stirring to form an emulsion, a process called emulsification. The phenomenon that two liquids which are not originally soluble in each other can be mixed together due to the action of the surfactant is called an emulsification phenomenon, and the surfactant having an emulsification effect is called an emulsifier. Most of oil substances with low density floating on the surface of sewage are dissolved in water such as oil stains and the like through an emulsifier, but at the moment, the methane flora can not well decompose the substances, so that a degrading agent is added into the solution before the methane tank, and the degrading agent comprises protein nucleus chlorella liquid and pit type chlorella liquid. A large amount of glomus punctata cells consume grease every day, and the grease can be degraded to a normal level after a period of time, so that the decomposition of oil stains is improved.
As a specific implementation mode of the urban severe polluted sewage treatment method provided by the invention, the steps of extracting the aggregate and respectively guiding the residual supernatant into a plurality of microbial decomposers for degradation comprise:
store the supernatant in the liquid storage tank, in the supernatant drainage to a plurality of microorganism decomposers in with the liquid storage tank by communicating pipe, make the liquid reflux to the liquid storage tank in a plurality of microorganism decomposers by the back flow pipe.
The supernatant was stirred in the tank.
Although the bottom and the top of the sewage respectively have sediments and oil stains, the impurities are more floaters in the middle. In order to filter this portion of the liquid, a plurality of microbial decomposition tanks are provided in the present application, in which attachments for adsorbing microorganisms are provided, each microbial decomposition tank is used for cultivating one kind of microorganism, and each microorganism is used for decomposing only a specific one of substances.
When practical application, at first store sewage in the liquid storage tank, then communicate liquid storage tank and a plurality of microorganism decomposer through a plurality of communicating pipes, sewage in the liquid storage tank flows into microorganism decomposer through the communicating pipe in, then flows back by the back flow of microorganism decomposer bottom, and a plurality of back flows all communicate with the liquid storage tank, and the sewage through degradation and the processing of microorganism can be in the liquid storage tank remixing again, then flow into in the microorganism decomposer again.
The liquid storage tank is communicated with a plurality of communicating pipes through the flow divider and is used for ensuring the same flow entering the microorganism decomposer. Each return pipe is communicated with a control valve, and the return pipes are communicated with a water pump.
As a specific implementation mode of the method for treating the urban heavily polluted sewage, the step of adding the materials to be added into the methane tank after the preset time is reached comprises the following steps:
adding the materials to be added into the methane tank in several times.
Because the biogas flora can not rapidly decompose the material to be added, the prepared material to be added is required to be added into the biogas digester in several times under normal conditions, so that the problem that the biological flora can not be cultured in a large amount in a long time is avoided to a certain extent.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The method for treating the urban severe polluted sewage is characterized by comprising the following steps:
collecting sediment at the bottom of sewage, grinding, emulsifying oil stain at the top of the sewage, and mixing the ground substance with the emulsified liquid to obtain a material to be added;
adding a bioflocculant into the treated sewage to obtain an aggregate, extracting the aggregate, and respectively draining the rest supernatant into a plurality of microbial decomposition tanks for degradation;
and mixing and stirring the aggregate and the biogas material, adding the mixture into a biogas pool, and adding the material to be added into the biogas pool after the preset time is reached.
2. The method for treating the urban heavily polluted sewage according to claim 1, wherein the step of adding the mixed aggregate and the biogas material into the biogas digester after mixing and stirring comprises the following steps:
communicating a gas storage tank with a methane outlet of a methane tank, and storing part of methane generated in the methane tank through the gas storage tank;
and a heating device is arranged on the outer wall of the methane tank and is communicated with the gas storage tank.
3. The method for treating the urban heavily polluted sewage according to claim 2, wherein said communicating the heating device with the gas storage tank comprises:
and recovering tail gas generated by the combustion of the heating device and introducing the tail gas into the methane tank.
4. The method for treating the heavily polluted municipal sewage according to claim 2, wherein said extracting said aggregate and directing the remaining supernatant to a plurality of microbial decomposers, respectively, for degradation comprises:
the outer wall of the microbial decomposition tank is provided with a heat insulation layer and a temperature control device, and the gas storage tank provides biogas for the combustion of the temperature control device.
5. The method for treating the heavily polluted municipal sewage according to claim 1, wherein said step of adding a bioflocculant to the treated sewage to obtain an aggregate comprises:
adding activated carbon into the treated sewage, and filtering the activated carbon after a specified time is reached;
and adding a coagulant aid and the biological flocculant into the sewage filtered by the activated carbon to obtain the aggregate.
6. The method for treating the urban heavily polluted sewage according to claim 1, further comprising, after said extracting the aggregates and respectively conducting the remaining supernatants to a plurality of microbial decomposers for degradation:
and adding the degraded supernatant into the methane tank for adjusting the humidity of the materials in the methane tank.
7. The method for treating the urban heavily polluted sewage according to claim 1, wherein the step of adding the mixed aggregate and the biogas material into the biogas digester after mixing and stirring comprises the following steps:
and adding a microbial culture material into the biogas material, stirring the biogas material and the aggregate, and adjusting the pH value of the stirred material to the proper pH value of the biogas flora.
8. The method for treating the urban heavily polluted sewage according to claim 1, further comprising, after mixing the ground substance with the emulsified liquid to obtain the material to be added:
adding a degradation agent into the material to be added.
9. The method for treating the urban heavily polluted sewage according to claim 1, wherein the steps of extracting the aggregates and respectively conducting the rest of the supernatant into a plurality of microbial decomposers for degradation comprise:
storing the supernatant in a liquid storage tank, guiding the supernatant in the liquid storage tank to a plurality of microbial decomposition tanks by a communicating pipe, and enabling liquid in the microbial decomposition tanks to flow back to the liquid storage tank by a return pipe;
and stirring the supernatant in the liquid storage tank.
10. The method for treating the urban heavily polluted sewage according to claim 1, wherein the adding the material to be added into the methane tank after the preset time is reached comprises:
and adding the materials to be added into the methane tank in several times.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114524583A (en) * | 2022-02-08 | 2022-05-24 | 海南大学 | High-efficiency environment-friendly sewage treatment method |
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| CN1986738A (en) * | 2005-12-23 | 2007-06-27 | 张才腾 | Combined oil-metal polymer solution and its application |
| CN104787964A (en) * | 2015-03-30 | 2015-07-22 | 天津大学 | Method and device for treating sewage and producing biogas |
| CN105417777A (en) * | 2015-12-01 | 2016-03-23 | 大连爱安沃特环境技术有限公司 | Sewage coagulation and adsorption sedimentation separation-separator anaerobic bio-gas regeneration treatment method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114524583A (en) * | 2022-02-08 | 2022-05-24 | 海南大学 | High-efficiency environment-friendly sewage treatment method |
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