CN111253019A - MABR (moving average biofilm reactor) rural sewage ecological treatment method - Google Patents
MABR (moving average biofilm reactor) rural sewage ecological treatment method Download PDFInfo
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- CN111253019A CN111253019A CN202010284490.8A CN202010284490A CN111253019A CN 111253019 A CN111253019 A CN 111253019A CN 202010284490 A CN202010284490 A CN 202010284490A CN 111253019 A CN111253019 A CN 111253019A
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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
- 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
- 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
- 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
- C02F2303/04—Disinfection
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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
- C02F3/30—Aerobic and anaerobic 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
- 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
Abstract
The invention relates to an MABR rural sewage ecological treatment method, and relates to the technical field of water treatment, wherein collected rural sewage enters from a water inlet at one end of an MABR purification pond, is discharged into a wetland system for deep purification from a water outlet at the other end of the MABR purification pond after purification treatment, and a purified water body is discharged or recycled after reaching the standard; the inside of the MABR purification pond is provided with a grating area, a primary sedimentation adjusting area, an MABR purification area, a sedimentation area and a disinfection area which are sequentially communicated; the MABR purification area is an MABR low dissolved oxygen treatment area (DO concentration is 0-2.0 mg/L), and the MABR is installed in a modularized way, so that DO is regulated to realize any one or more of anaerobic state, anoxic state and aerobic state. The invention has the advantages of high degradation load efficiency, high oxygen utilization rate, strong flexibility, convenient installation, no-soil construction, simple operation, low operation cost and convenient maintenance, and can realize the high-efficiency ecological treatment of rural sewage with low energy consumption and low mud amount.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and relates to an MABR (moving activated sludge biofilm reactor) rural sewage ecological treatment method. MABR, also known as enhanced coupled Biofilm Reactor (EHBR), is known by the English name of Membrane affected Biofilm Reactor.
Background
The discharge amount of rural sewage in China is continuously increased, and the sewage becomes a main nitrogen and phosphorus pollution source of rivers and lakes, so that water body pollution and eutrophication of lakes and rivers are caused, and the water ecological environment is seriously damaged. When a large number of new rural areas are built, the rural sewage treatment is gradually scheduled. Aiming at the problems that the rural sewage is treated by the rear end of the septic tank in several treatment modes, such as an integrated device, an artificial wetland and the like, but all have the defects of the integrated device, the integrated device has poor treatment effect, higher dosage and high operation cost; the artificial wetland has low pollution source load and occupies a large amount of land, the treatment effect is severely restricted by climate and season, and the phosphorus removal capability is weaker and weaker along with the increase of the operation time. Therefore, the rural domestic sewage integrated treatment method which has the advantages of energy conservation, environmental protection, economic benefit and high-efficiency nitrogen and phosphorus removal has great significance for the current rural domestic sewage problem.
The EHBR urine treatment device (CN 209468263U) in the patent has certain effect of treating the urine water body of the rural dry toilet by utilizing an EHBR membrane component device.
Based on this, how to more effectively apply the MABR technology to rural sewage ecological treatment to form a set of complete MABR rural sewage ecological treatment process is a problem to be solved in the field.
Disclosure of Invention
The invention provides an MABR rural sewage ecological treatment method, which aims to overcome the defects in the prior art, utilizes the original rural sewage collection system, is reasonably distributed, focuses on ecological treatment and is suitable for the treatment of sewage in rural areas.
On the basis of the original rural sewage collection system, the conventional rural natural pond or artificial pond is used as an MABR purification pond, an MABR membrane component is implanted into the MABR purification pond, and efficient ecological treatment of rural sewage with low energy consumption and low sludge amount is realized by combining processes such as precipitation disinfection and the like.
The specific technical scheme is as follows:
an MABR rural sewage ecological treatment method is characterized in that: the collected rural sewage enters from a water inlet at one end of the MABR purification pond, is discharged into a wetland system for deep purification from a water outlet at the other end of the MABR purification pond after purification treatment, and the purified water body reaches the standard and is discharged or recycled; the interior of the MABR purification pond is provided with a grating zone, a primary sedimentation adjusting zone, an MABR purification zone, a sedimentation zone and a disinfection zone which are communicated in sequence; the MABR purification area is an MABR low dissolved oxygen treatment area (DO concentration is 0-2.0 mg/L), and the MABR is installed in a modularized manner, so that DO is regulated to realize any one or more of anaerobic state, anoxic state and aerobic state.
Preferably, the MABR purification pond is a natural pond or an artificial pond, the depth of the MABR purification pond is 1.0-4.0 m, the peripheral part of the MABR purification pond and the surface above the water body are provided with aquatic plant floating beds, and the aquatic plants are harvested at regular intervals.
Preferably, the MABR purification area comprises a gas supply device, a gas supply pipeline, a valve and an MABR module, wherein the MABR module consists of an MABR component, a membrane bracket, a bottom aeration system and a control valve, the MABR membrane component is a bubble-free aeration hollow fiber curtain type membrane component, the width of the MABR membrane component is 0.2-3.0m, and the MABR membrane components are connected through a gas pipeline; the air supply equipment adopts a submerged fan and is arranged on the bank side of the MABR purification pond, or adopts a conventional fan arranged on the bank; the control valve is opened periodically to disturb the water body and the surface of hollow fibers of the MABR membrane component.
Preferably, the settling zone adopts flow channel plug flow type natural settling.
Preferably, the primary settling adjustment zone and the settling zone periodically clean the bottom mud.
Preferably, the wetland system is an artificial wetland or a natural wetland.
The invention relates to an MABR rural sewage ecological treatment method, which adopts the process flow of water inlet → a pretreatment area → an MABR purification area → a precipitation area → a disinfection area → water outlet. The MABR technology utilizes an aerobic/anoxic/anaerobic structure of a microbial membrane on the surface of an MABR membrane wire to adjust the air supply pressure, adjusts the DO concentration range in the MABR purifying pond, controls the DO concentration to be 0-2.0mg/L, and modularly installs the MABR membrane component and adjusts the DO to realize any one or more of anaerobic state, anoxic state or aerobic state. The invention has the advantages of high degradation load efficiency, high oxygen utilization rate, strong flexibility, convenient installation, no-soil construction, simple operation, low operation cost and convenient maintenance, and can realize the high-efficiency ecological treatment of rural sewage with low energy consumption and low mud amount.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention.
FIG. 2 is a schematic plane structure of the present invention.
Fig. 3 is a schematic diagram of the vertical structure of the MABR module of the present invention.
In the figure: 1. the system comprises a water inlet, a 2 grid area, a 3 primary settling adjusting area, a 4 MABR purifying pond, a 5 MABR module, a 6 MABR purifying area, a 7 settling area, a 8 disinfecting area, a 9 water outlet, a 10 aquatic plant floating bed, 11 air supply equipment, 12 air supply pipelines, 13 valves, 14 membrane supports, 15 MABR membrane modules, 16 plugging caps, 17 control valves, 18 and a bottom aeration system.
Detailed Description
The MABR rural sewage ecological treatment method of the invention is further described with reference to the figures 1 to 3.
An MABR rural sewage ecological treatment method adopts the process flow of water inlet → a pretreatment area → an MABR purification area → a precipitation area → a disinfection area → water outlet, wherein the pretreatment area comprises a grating area 2 and a primary sedimentation adjusting area 3. The collected rural sewage enters from a water inlet 1 at one end of an MABR purification pond 4, is discharged into a wetland system for deep purification from a water outlet 9 at the other end of the MABR purification pond 4 after purification treatment, and the purified water body is discharged or recycled after reaching the standard; the inside of the MABR purification pond 4 is provided with a grating zone 2, a primary sedimentation adjusting zone 3, an MABR purification zone 6, a sedimentation zone 7 and a disinfection zone 8 which are communicated in sequence; the MABR purifying area 6 is an MABR low dissolved oxygen treatment area (DO concentration is 0-2.0 mg/L), and is modularly installed, so that DO is adjusted to realize any one or more of anaerobic state, anoxic state and aerobic state.
The MABR purifying pond 4 is a natural pond or an artificial pond, the depth is 1.0-4.0 m, the periphery and the surface above the water body are provided with aquatic plant floating beds 10, and aquatic plants are harvested at regular intervals.
All areas in the MABR purification pond 4 are separated by soft partition plates or soft partition cloth, so that the construction is convenient.
And an MABR module 5 in the MABR purifying area 6 is designed according to the requirements of water quality and water quantity.
The MABR purifying area 6 comprises a gas supply device 11, a gas supply pipeline 12, a valve 13 and an MABR module 5, wherein the MABR module 5 consists of an MABR assembly 15, a membrane bracket 14, a bottom aeration system 18 and a control valve 17, the MABR assembly 15 is a bubble-free aeration hollow fiber curtain type membrane assembly, the width of the MABR assembly 15 is 0.2-3.0m, the MABR assemblies 15 are connected through gas pipelines, and the other ends are blocked by blocking caps 16; the air supply device 11 adopts a submerged fan and is arranged at the bank side of the MABR purification pond 4, or adopts a conventional fan arranged on the bank; the control valve 17 is opened periodically to disturb the water and the hollow fiber surface of the MABR membrane module 15.
The upper part of the peripheral water body of the MABR purifying area 6 is provided with an aquatic plant floating bed 10, the quantity of the aquatic plant floating beds 10 is designed according to the size of the MABR purifying pond 4 and the nitrogen and phosphorus content in water, the whole aquatic plant floating bed 10 is fixed at the bank of the MABR purifying pond 4 through a rope, and aquatic plants are harvested at regular intervals.
The settling zone 7 adopts flow channel plug flow type natural settling, and the number of the flow channels ranges from 3 to 7.
The primary sedimentation adjusting area 3 and the sedimentation area 7 regularly clean the bottom mud, and the time is generally selected in the season with less sewage in rural areas.
The primary sedimentation adjusting area 3 has the function of adjusting water quality, rural sewage is relatively dispersed, water is discharged irregularly, the water quality received in different time periods is different, and mixing adjustment is carried out in the primary sedimentation adjusting area 3.
Example 1: the collected water amount for treating rural sewage is 50m3/d, the effective retention time is designed to be 5d, and the volume of the MABR purification pond 4 is designed to be 600 m 3. And adjusting the air supply pressure of the air supply equipment 11, and adjusting the DO content of the area where each MABR module 5 is located, so that the MABR purification area 6 is an anaerobic area, an anoxic area and an aerobic area along the water flow direction. 40 groups of MABR modules 5 are designed, 8 aquatic plant floating beds 10 are designed and respectively arranged at the periphery of an MABR purification area 8, effluent enters an artificial wetland system after being treated by an MABR purification pond, and the effluent of the system can reach the quality standard of farmland irrigation water (GB 5084-2005) or higher.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (4)
1. An MABR rural sewage ecological treatment method is characterized in that: the collected rural sewage enters from a water inlet at one end of the MABR purification pond, is discharged into a wetland system for deep purification from a water outlet at the other end of the MABR purification pond after purification treatment, and the purified water body reaches the standard and is discharged or recycled; the interior of the MABR purification pond is provided with a grating zone, a primary sedimentation adjusting zone, an MABR purification zone, a sedimentation zone and a disinfection zone which are communicated in sequence; the MABR purification area is an MABR low dissolved oxygen treatment area (DO concentration is 0-2.0 mg/L), and the MABR is installed in a modularized manner, so that DO is regulated to realize any one or more of anaerobic state, anoxic state and aerobic state.
2. The MABR rural sewage ecological management method of claim 1, which is characterized in that: the MABR purification pond is a natural pond or an artificial pond, the depth is 1.0-4.0 m, the peripheral part and the surface above the water body are provided with aquatic plant floating beds, and aquatic plants are harvested at regular intervals.
3. The MABR rural sewage ecological management method of claim 1, which is characterized in that: the MABR purification area comprises gas supply equipment, a gas supply pipeline, a valve and an MABR module, wherein the MABR module consists of an MABR assembly, a membrane bracket, a bottom aeration system and a control valve, the MABR membrane assembly is a bubble-free aeration hollow fiber curtain type membrane assembly, the width of the MABR membrane assembly is 0.2-3.0m, and the MABR membrane assemblies are connected through a gas pipeline; the air supply equipment adopts a submerged fan and is arranged on the bank side of the MABR purification pond, or adopts a conventional fan arranged on the bank; the control valve is opened periodically to disturb the water body and the surface of hollow fibers of the MABR membrane component.
4. The MABR rural sewage ecological management method of claim 1, which is characterized in that: the wetland system is an artificial wetland or a natural wetland.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010284490.8A CN111253019A (en) | 2020-04-13 | 2020-04-13 | MABR (moving average biofilm reactor) rural sewage ecological treatment method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010284490.8A CN111253019A (en) | 2020-04-13 | 2020-04-13 | MABR (moving average biofilm reactor) rural sewage ecological treatment method |
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| CN111253019A true CN111253019A (en) | 2020-06-09 |
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| CN202010284490.8A Pending CN111253019A (en) | 2020-04-13 | 2020-04-13 | MABR (moving average biofilm reactor) rural sewage ecological treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845224A (en) * | 2021-11-01 | 2021-12-28 | 南开大学 | Process method suitable for treating sewage with low carbon-nitrogen ratio |
| CN115353195A (en) * | 2022-08-22 | 2022-11-18 | 中建生态环境集团有限公司 | Low-energy-consumption ecological sewage treatment device |
-
2020
- 2020-04-13 CN CN202010284490.8A patent/CN111253019A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113845224A (en) * | 2021-11-01 | 2021-12-28 | 南开大学 | Process method suitable for treating sewage with low carbon-nitrogen ratio |
| CN115353195A (en) * | 2022-08-22 | 2022-11-18 | 中建生态环境集团有限公司 | Low-energy-consumption ecological sewage treatment device |
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