CN111635068A - Sewage treatment method by biomembrane process - Google Patents
Sewage treatment method by biomembrane process Download PDFInfo
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- CN111635068A CN111635068A CN202010403697.2A CN202010403697A CN111635068A CN 111635068 A CN111635068 A CN 111635068A CN 202010403697 A CN202010403697 A CN 202010403697A CN 111635068 A CN111635068 A CN 111635068A
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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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2001/007—Processes including a sedimentation step
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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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
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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
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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
- C02F3/325—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae use of algae as symbiotic combination of algae and bacteria
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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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a sewage treatment method by a biomembrane method. Comprises the following steps of removing impurities: the sewage enters a grid and a grit chamber; removing mud: the sewage after impurity removal enters a primary sedimentation tank; and (3) concentration adjustment: the sewage enters the regulating pool from the primary sedimentation pool and is uniformly stirred with the added water; and (3) biological membrane treatment: the sewage after being stirred uniformly flows into a high-load biological filter for purification; secondary desilting: the sewage treated by the biological membrane enters a secondary sedimentation tank; and (3) filtering: the sewage after the secondary desilting enters a filter for filtering and purifying; and a sludge treatment system is also arranged in the steps from sludge removal to secondary sludge removal. The invention has the beneficial effects that: solves the technical problems that the effluent produced by the biomembrane method is often provided with large and easily-precipitated biomembrane and also provided with a plurality of very fine biological fragments, and the fragments lack the biological flocculation capacity similar to activated sludge, so the effluent is turbid and the filter material is easy to plug to influence the purification effect.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sewage treatment method by a biomembrane method.
Background
The biomembrane process is a kind of aerobic biological treatment technology for waste water parallel to the activated sludge process, is a fixed membrane process, is the artificial and reinforced process of self-cleaning of sewage and soil, and mainly removes the soluble and colloidal organic pollutants in the waste water. The treatment technology comprises a biological filter (a common biological filter, a high-load biological filter and a tower type biological filter), a biological rotating disc, a biological contact oxidation device, a biological fluidized bed and the like.
In the second and thirty decades of the nineteenth century, more biofilters are built. At that time, the biofiltration method and the activated sludge method were juxtaposed. Compared with the two methods, the biological filtration method has the defects of low volume load and BOD removal rate, poor environmental sanitation conditions, possibility of blockage of treated structures and the like, so that the biological filtration method is gradually replaced by the activated sludge method in the forties to sixties. However, in the sixties, the biofilm method has been newly developed due to the mass production of novel synthetic materials and the further improvement of water quality requirements for environmental protection. In recent years, tower biofilters, biological rotating disks, biological contact oxidation methods and biological fluidized beds which belong to a biofilm method are researched and applied more.
However, biofilm processes also suffer from the disadvantage that the effluent often has large and easily sedimenting biofilm sheets, and also many very fine biological debris which are cloudy due to a lack of bioflocculation capacity similar to activated sludge. And the filter material is often easy to block, reducing the purification effect.
Disclosure of Invention
In order to solve the technical problems, the invention discloses a sewage treatment method by a biofilm method, and the technical scheme of the invention is implemented as follows:
a sewage treatment method by a biomembrane method is characterized in that: the method comprises the following steps:
s1: impurity removal: the sewage enters a grid and a grit chamber to remove impurities
S2: removing mud: the sewage after impurity removal enters a primary sedimentation tank for desilting;
s3: and (3) concentration adjustment: the sewage enters the regulating pool from the primary sedimentation pool to regulate the sewage concentration;
s4: and (3) biological membrane treatment: the sewage after being stirred uniformly flows into a high-load biological filter for purification;
s5: secondary desilting: the sewage treated by the biomembrane enters a secondary sedimentation tank for sedimentation and sludge removal;
s6: and (3) filtering: the sewage after the secondary desilting enters a filtering tank for filtering and purifying;
and a sludge treatment system is also arranged in the steps S2 and S5.
Preferably, the sludge treatment system comprises a sludge thickening device, a sludge dewatering device and a sludge recycling device.
Preferably, the high-load biofilter further comprises a filter material backwashing device.
Preferably, the filtering tank is connected with the regulating tank.
Preferably, a stirring device is arranged in the regulating reservoir.
Preferably, a temperature controller and a PH controller are further provided in the step S4.
Preferably, it further comprises S7: and (3) disinfection: and the filtered sewage enters a disinfection tank for disinfection.
By implementing the technical scheme of the invention, the technical problems that the effluent is turbid and the filter material is easy to plug to influence the purification effect in the prior art can be solved; by implementing the technical scheme of the invention, the technical effects of difficult blockage of the filter material, prolonged service life and improved purification capacity can be realized by adjusting the water inlet concentration and the filter material backwashing device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In a specific embodiment, as shown in fig. 1, a method for treating wastewater by a biofilm process, comprising: the method comprises the following steps:
s1: impurity removal: the sewage enters a grid and a grit chamber to remove impurities;
s2: removing mud: the sewage after impurity removal enters a primary sedimentation tank for desilting;
s3: and (3) concentration adjustment: the sewage enters the regulating pool from the primary sedimentation pool to regulate the sewage concentration;
s4: and (3) biological membrane treatment: the sewage after being stirred uniformly flows into a high-load biological filter for purification;
s5: secondary desilting: the sewage treated by the biomembrane enters a secondary sedimentation tank for sedimentation and sludge removal;
s6: and (3) filtering: the sewage after the secondary desilting enters a filtering tank for filtering and purifying;
and a sludge treatment system is also arranged in the steps S2 and S5.
In this embodiment, the sewage firstly enters the grit chamber through the grid to remove some impurities such as sand and stone carried by the sewage itself, so as to prevent blockage during the purification process of the biological membrane, and after the impurities are removed, the sewage enters the primary sedimentation tank, so that on one hand, most suspended solid matters are removed, and the blockage of the high-load biological filter is prevented, and a part of sludge is precipitated. The sewage flows into the regulating tank from the primary sedimentation tank for concentration regulation, because of the defects of the biomembrane treatment method, if the sewage concentration is too high, the filter material is easy to fill the biofilter to influence the purification effect, so the sewage concentration entering the high-load biofilter is regulated in the step to solve the problem, then the sewage after concentration regulation enters the high-load biofilter for water quality purification to remove organic pollutants and partial nitrogen elements in the sewage, the biomembrane can keep higher activity to inhibit excessive breeding of flies in the biofilter and reduce odor, the sewage after purification enters the secondary sedimentation tank for sludge sedimentation, the sludge contains partial fallen biomembrane, the sewage after secondary sedimentation enters the filtering tank for secondary purification, because of the characteristics of the biomembrane method, the effluent water quality is turbid, the sewage after treatment needs to be purified again by the filtering tank, the water quality is improved and reaches the discharge standard of the national standard. The sludge treatment system is used for carrying out centralized treatment on the sludge generated in the purification process, and is economic and environment-friendly. The sludge can be used for crop fertilizer or other purposes after being treated, and is economical, environment-friendly and practical. The embodiment solves the problems that the outlet water is turbid and the filter material is easy to plug to influence the purification effect, and can be suitable for sewage treatment in various environments.
In a preferred embodiment, the sludge treatment system comprises a sludge thickening apparatus, a sludge dewatering apparatus, and a sludge recycling apparatus.
In this embodiment, the sludge concentration device collects sludge generated in the treatment process, the sludge dehydration device dries the sludge collected by concentration, and then the dried sludge is centralized by the sludge recovery device, so that the sludge can be conveniently treated by workers.
In a preferred embodiment, the high-load biofilter further comprises a filter material backwashing device.
In the long-time treatment process, because the generation of the biological membrane falls off and the sewage impurities are precipitated and accumulated, the impurities in the filter material are increased, and the purification effect is seriously influenced. Therefore, the filter material backwashing device is arranged to solve the problem by adopting high-strength water washing.
In a preferred embodiment, the filtration tank is connected to the conditioning tank.
The water after the filtration of filtering ponds can be used for pouring into the adjusting tank and adjust sewage concentration, can carry out the secondary to the water that has purified on the one hand, reaches the purpose of resources are saved cost through recycling on the one hand.
In a preferred embodiment, a stirring device is arranged in the regulating reservoir.
In this embodiment, agitating unit can accelerate the speed of equalizing basin concentration control, save time when promoting the effect.
In a preferred embodiment, a temperature controller and a PH controller are further provided in the step S4.
The biological membrane is an ecological system consisting of highly dense aerobic bacteria, anaerobic bacteria, facultative bacteria, fungi, protozoa, algae and the like, and a solid medium attached to the biological membrane is called as a filter material or a carrier. Both temperature and pH influence the activity of microorganisms, and in order to ensure the purification effect of biological treatment, the temperature and pH of the sewage in the high-load biological filter are particularly required to be controlled.
In a preferred embodiment, the method further comprises the step of S7: and (3) disinfection: and the filtered sewage enters a disinfection tank for disinfection.
In the embodiment, the disinfection tank can improve the water quality purification effect, reduce pollution and protect environment.
By implementing the technical scheme of the invention, the technical problems that the effluent is turbid and the filter material is easy to plug to influence the purification effect in the prior art can be solved; by implementing the technical scheme of the invention, the technical effects of difficult blockage of the filter material, prolonged service life and improved purification capacity can be realized by adjusting the water inlet concentration and the filter material backwashing device.
It should be understood that the above-described embodiments are merely exemplary of the present invention, and are not intended to limit the present invention, and that any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A sewage treatment method by a biomembrane method is characterized in that: the method comprises the following steps:
s1: impurity removal: the sewage enters a grid and a grit chamber to remove impurities
S2: removing mud: the sewage after impurity removal enters a primary sedimentation tank for desilting;
s3: and (3) concentration adjustment: the sewage enters the regulating pool from the primary sedimentation pool to regulate the sewage concentration;
s4: and (3) biological membrane treatment: the sewage after being stirred uniformly flows into a high-load biological filter for purification;
s5: secondary desilting: the sewage treated by the biomembrane enters a secondary sedimentation tank for sedimentation and sludge removal;
s6: and (3) filtering: the sewage after the secondary desilting enters a filtering tank for filtering and purifying;
and a sludge treatment system is also arranged in the steps S2 and S5.
2. The sewage treatment method by the biofilm method according to claim 1, characterized in that: the sludge treatment system comprises a sludge concentration device, a sludge dewatering device and a sludge recovery device.
3. The sewage treatment method by the biofilm method according to claim 1, characterized in that: the high-load biological filter also comprises a filter material backwashing device.
4. The sewage treatment method by the biofilm method according to claim 1, characterized in that: the filtering tank is connected with the adjusting tank.
5. The method for treating sewage by a biofilm method according to claim 4, which is characterized in that: and a stirring device is arranged in the regulating reservoir.
6. The sewage treatment method by the biofilm method according to claim 1, characterized in that: and a temperature controller and a pH control device are also arranged in the step S4.
7. The method for sewage treatment by a biofilm method according to claim 1, which is characterized in that: further comprising S7: and (3) disinfection: and the filtered sewage enters a disinfection tank for disinfection.
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| CN202010403697.2A CN111635068A (en) | 2020-05-13 | 2020-05-13 | Sewage treatment method by biomembrane process |
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| CN202010403697.2A CN111635068A (en) | 2020-05-13 | 2020-05-13 | Sewage treatment method by biomembrane process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112520854A (en) * | 2020-12-30 | 2021-03-19 | 魏一明 | Method for treating sewage by using biological membrane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668929A (en) * | 2016-03-04 | 2016-06-15 | 苏州苏沃特环境科技有限公司 | Dyeing wastewater treatment and recycling technical system |
| CN206384986U (en) * | 2016-12-22 | 2017-08-08 | 上海湛清环境工程有限公司 | Municipal sewage comprehensive purification system |
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2020
- 2020-05-13 CN CN202010403697.2A patent/CN111635068A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105668929A (en) * | 2016-03-04 | 2016-06-15 | 苏州苏沃特环境科技有限公司 | Dyeing wastewater treatment and recycling technical system |
| CN206384986U (en) * | 2016-12-22 | 2017-08-08 | 上海湛清环境工程有限公司 | Municipal sewage comprehensive purification system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112520854A (en) * | 2020-12-30 | 2021-03-19 | 魏一明 | Method for treating sewage by using biological membrane |
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