CN211056898U - MFBR sewage treatment plant - Google Patents
MFBR sewage treatment plant Download PDFInfo
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- CN211056898U CN211056898U CN201921155604.8U CN201921155604U CN211056898U CN 211056898 U CN211056898 U CN 211056898U CN 201921155604 U CN201921155604 U CN 201921155604U CN 211056898 U CN211056898 U CN 211056898U
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Abstract
The utility model discloses an MFBR sewage treatment device, which comprises a treatment barrel, wherein the treatment barrel is internally divided into a regulation area, an intermediate reaction area, an MFBR reaction area and a precipitation separation area; the MFBR reaction zone is divided into a fluidized bed aerobic zone and a fixed bed aerobic zone, the fluidized bed aerobic zone and the fixed bed aerobic zone are communicated through water passing holes formed in the bottom, fluidized fillers and fixed fillers are respectively arranged in the fluidized bed aerobic zone and the fixed bed aerobic zone through grid baskets, and an aeration pipe is arranged at the bottom of the MFBR reaction zone; the precipitation separation area is internally provided with a gas stripping device, the liquid outlet end of the gas stripping device is communicated with the middle reaction area through a return pipe, and the gas stripping device and the aeration pipe provide a gas source through a gas pump. The sewage treatment device adopting the structure has the advantages of economy, energy conservation, low capital investment and operating cost, good sewage treatment effect, high sewage treatment efficiency and simple and easy treatment process.
Description
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to MFBR sewage treatment plant.
Background
First, explanation will be made on the term MFBR, which refers to a sewage treatment reaction zone in which a fluidized bed and a fixed bed are combined.
The rural domestic sewage treatment is an important content for improving rural living environment and improving rural resident living standard and is also an important mark for rural modernization, along with the improvement of rural living standard, a water-flushed toilet is popularized in peasants, washing water is increased, domestic water consumption and centralized water supply rate of rural areas are improved year by year, rural domestic sewage discharge amount is increased year by year, 7.97 of rural population in 2015 of China is estimated according to daily domestic water consumption 83L and a discharge coefficient of 0.8, 193 cubic meters of rural domestic sewage needs to be treated cumulatively all year round, 31 percent of total rural domestic sewage discharge amount is required, from the aspect of treatment rate, the end of 2015, the urban sewage treatment rate is 91.9 percent, the total sewage treatment amount reaches 428.8 cubic meters per billion, the county sewage treatment rate is 85.22 percent, the total sewage treatment amount reaches 78.9 billion cubic meters all year round, the administrative sewage treatment rate is 11.4 percent, a large amount of rural domestic sewage is discharged without weak treatment, is changed into rural living environment pollution, thus being one of rural ponds, rivers, eutrophication and other major causes of environmental pollution, the rural domestic sewage treatment of rural living environment are promoted, the countryside of rural areas, the rural area is improved, the rural area of rural area, the rural area is improved, the rural area of rural domestic sewage treatment of rural area is promoted, the rural area is improved, the whole country is improved, the rural area is more, the rural area is improved, the rural area is improved, the rural area is the rural.
Development of rural domestic sewage treatment is an important work for improving water environment quality in rural areas. Compared with cities, the treatment of rural domestic sewage has the following characteristics: because the rural economic foundation is relatively weak, the control cost for water pollution is low; the matched infrastructure is poor, and corresponding detection facilities and monitoring personnel are not available; the scale of a single sewage treatment facility is small, but the facility quantity is huge, and the operation and supervision difficulty is large. According to the analysis result of data in 2010 < national urban and rural construction statistics yearbook >, the treatment rate of urban sewage in China reaches 87%, the treatment rate of sewage in county and city reaches 75%, the treatment rate of sewage in construction town reaches 28%, but the treatment rate of sewage in rural area is only 8%. However, under relevant policies and environmental conditions, rural sewage treatment issues have been promulgated and have evolved rapidly with national financial support. According to statistics, the treatment rate of domestic sewage in rural areas in the country in 2016 reaches 22%, but due to the fact that most of rural economic levels are relatively laggard, capital is deficient, investment is insufficient, technical strength is weak, rural residences are scattered, only the traditional urban sewage treatment technology and process are simply applied, and capital cost is generally 1500-2000 yuan/m3(ii)/d, total treatment cost is 0.7-3.0 yuan/m3And rural areas are not affordable due to economic constraints. Therefore, the rural domestic sewage treatment technology and device which can normally operate by utilizing local technology and management force are imperative.
At present, a great deal of research is carried out on sewage treatment at home and abroad, for example, a Chinese patent with application number 201410846866.4 discloses a rural distributed small-sized integrated sewage treatment device which mainly comprises a solar energy driving and controlling system, a first anaerobic tank and a second anaerobic tankAn oxygen filter bed tank, a contact aeration tank, a sedimentation tank and a disinfection channel. The photovoltaic power generation system can automatically operate by using photovoltaic by adopting a highly integrated high-tech practical technology, and the storage battery needs to be replaced in 2-3 years; also, for example, chinese patent with application number 201410777913.4 discloses a3The integrated sewage treatment device and the sewage treatment method of the/O-MBBR improve the treatment efficiency and improve the effects of nitrogen and phosphorus removal by arranging the sludge reflux mechanism, the digestion liquid reflux mechanism and the anaerobic liquid reflux mechanism and filling suspended fillers in the aerobic tank, improve the precipitation effect by optimizing the structure of the sedimentation tank and reduce the content of suspended matters in the effluent; for example, the Chinese patent with the application number of 201510183884.3 discloses a decentralized sewage treatment method in rural areas, wherein the facility consists of a regulating tank and an integrated facultative membrane bioreactor, and continuous water feeding, periodic aeration and periodic water drainage are adopted so as to improve the treatment efficiency. For another example, chinese patent application No. 201610424762.3 discloses an OMBR integrated sewage treatment and recycling apparatus, which includes a multiple high-efficiency biological purification tank, a buffer tank, a high-efficiency sedimentation tank, an OMBR tank, a backwash tank, a chemical-adding disinfection system, and a circulation tank. The sewage treatment devices and the sewage treatment methods have respective advantages, but in general, the processes related to the membrane treatment technology have the defects of high energy consumption, high maintenance cost, high membrane material replacement cost, high technical requirement on operators and the like.
According to the development level of rural productivity in China and the characteristics of rural natural climate, relevant organizations put forward that the technology and facilities for treating rural domestic sewage in China should meet four basic requirements of low cost, less maintenance, ecology and good effect. Considering the dispersibility of rural residences in China and the relative centralization of rural residences, the rural domestic sewage treatment object in China is divided into five modes: the system comprises a single-family processing mode, a joint-family processing mode, a village processing mode, a joint-village processing mode and a grid-connected processing mode. Therefore, there is a need to develop a novel device and a sewage treatment method which have the advantages of good treatment effect, high treatment efficiency, strong impact load resistance, economy, energy conservation, low capital investment and operating cost, simple and easy treatment process, convenient maintenance and management and normal operation according to the characteristics of rural domestic sewage treatment object units, thereby solving the problem of direct discharge of a large amount of rural domestic sewage at present.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model aims at providing an economical and energy-conserving, capital expenditure and running cost are low, sewage treatment is effectual, sewage treatment efficiency is high, simple and easy MFBR sewage treatment plant of processing technology simple and easy.
The utility model discloses an above-mentioned problem is solved to following technical means: an MFBR sewage treatment device comprises a treatment barrel, wherein the treatment barrel is divided into a regulation area, an intermediate reaction area, an MFBR reaction area and a precipitation separation area through which sewage flows in sequence; the MFBR reaction zone is divided into a fluidized bed aerobic zone communicated with the middle reaction zone and a fixed bed aerobic zone communicated with the precipitation separation zone, the fluidized bed aerobic zone and the fixed bed aerobic zone are communicated through water passing holes formed in the bottom, fluidized fillers and fixed fillers are respectively arranged in the fluidized bed aerobic zone and the fixed bed aerobic zone through grid baskets, and aeration pipes capable of aerating both the fluidized bed aerobic zone and the fixed bed aerobic zone are arranged at the bottom of the MFBR reaction zone; the precipitation separation area is internally provided with a gas stripping device, the liquid outlet end of the gas stripping device is communicated with the middle reaction area through a return pipe, and the gas stripping device and the aeration pipe provide a gas source through a gas pump.
Further, the intermediate reaction zone comprises an anoxic zone and/or an anaerobic zone.
Furthermore, the middle reaction zone comprises an anaerobic zone and an anoxic zone which are arranged from top to bottom, the anaerobic zone is separated from the anoxic zone through a partition plate with a water hole, the anaerobic zone is communicated with the aerobic zone of the fluidized bed through the water hole, an inclined tube filler is arranged in the anoxic zone, the adjusting zone is respectively communicated with the anaerobic zone and the anoxic zone through a flow dividing pipe, and the liquid outlet end of the gas stripping device is communicated with the anoxic zone through a return pipe.
Furthermore, a water distribution pipe is arranged at one end of the return pipe communicated with the anoxic zone.
Furthermore, the top of the adjusting area is communicated with a water inlet pipe, a sand setting folded plate and a grid screen plate for filtering sewage are obliquely arranged on the top of the adjusting area, and a water outlet pipe is arranged on the precipitation separation area.
Furthermore, the sand setting folded plate can be detached, the inclination angle of the sand setting folded plate is 30-60 degrees, and a baffle plate is arranged at the bottom of the grid mesh plate.
Furthermore, the volume ratio of the fluidized bed aerobic zone to the fixed bed aerobic zone is 1:6-1: 1.
Further, a baffle plate is arranged on one side of the precipitation separation area close to the MFBR reaction area, and the gas stripping device is arranged between the baffle plate and the MFBR reaction area.
Furthermore, a valve is arranged on the return pipe, and an exhaust branch pipe extends out of a return pipe section between the valve and the air lifting device.
Further, the treatment cylinder is cylindrical, the adjusting zone is positioned in the center of the treatment cylinder, and the intermediate reaction zone, the fluidized bed aerobic zone, the fixed bed aerobic zone and the precipitation separation zone are sequentially arranged around the adjusting zone in the circumferential direction.
The utility model has the advantages that:
(1) this device is equipped with four districts in handling a section of thick bamboo, and every district corresponds a reaction tank, follows rivers order and be regulation area, oxygen deficiency/anaerobic zone, MFBR reaction zone and deposit the disengagement zone in proper order, and each interval baffling intercommunication about in proper order, has realized mud and the synchronous inner loop of liquid of nitrifying, has effectively reduced area, has saved the energy consumption.
(2) The device and the sewage treatment method provide a device suitable for treating domestic sewage in rural areas of China according to the development level of the productivity in rural areas of China and the characteristics of natural climate in rural areas, and meet four basic requirements of low cost, less maintenance, ecology and good effect.
(3) The MFBR reaction zone of the creative design of the device is divided into a fluidized bed aerobic zone and a fixed bed aerobic zone, and can be filled with fluidized filler and fixed filler respectively, so that different microbial purification functions are realized, and the sewage treatment efficiency and effect are greatly improved.
(4) This application is through setting up the air stripping device, and the circulation of oxygen deficiency district is handled with the synchronous pumpback of nitrifying liquid and mud in the separation area of precipitating, so realized the circulation treatment to sewage, further be favorable to improving the treatment effect to sewage.
(5) According to the gas-liquid separation device, the exhaust branch pipe extends out of the return pipe, so that on one hand, in the normal gas stripping, backflow and pumping process, the exhaust branch pipe can be used for discharging gas in backflow mixed liquid, the amount of gas flowing into an anoxic zone is greatly reduced, and the requirement of the anoxic zone is further met; on the other hand, when the valve is closed, the surplus sludge in the precipitation separation zone can be discharged through the exhaust branch pipe.
In a word, the utility model discloses a MFBR sewage treatment plant utilizes self structural feature, enables to mix liquid and mud synchronous reflux to can realize the full automatic operation of unmanned on duty, the treatment effect is reliable and stable, and has simple structure, takes up an area of less, investment province, the energy consumption is low, the working costs is low, advantages such as management convenience, is fit for the rural domestic sewage treatment in the underdeveloped area of economy.
Drawings
The invention is further described with reference to the following figures and examples.
Fig. 1 is an expanded schematic view of the present invention;
fig. 2 is a schematic top view of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1-2, the MFBR sewage treatment apparatus of the present embodiment includes a treatment cylinder 24, which is partitioned by a partition into a central regulation region 1, and an intermediate reaction region, an MFBR reaction region and a precipitation separation region 6, which are sequentially arranged around the regulation region in a circumferential direction.
The top of the adjusting area is communicated with a water inlet pipe 7, a sand setting folded plate 8 and a grid screen plate 9 are obliquely arranged on the top of the adjusting area, the sand setting folded plate can be detached, the inclination angle of the sand setting folded plate is 30-60 degrees, the sand setting folded plate and the grid screen plate which are assembled together cover the adjusting area, and when sewage to be treated flows into the adjusting area, scum in the sewage can be filtered through the sand setting folded plate and the grid screen plate. The bottom of the grid mesh plate is provided with a baffle plate 10, and sewage flows through the adjusting area in a return type under the guidance of the baffle plate.
The middle reaction zone comprises an anoxic zone and/or an anaerobic zone, and in the application process, the middle reaction zone can be freely designed according to the condition of sewage to be treated, if the middle reaction zone can only be the anoxic zone or only be the anaerobic zone and can also simultaneously comprise the anoxic zone and the anaerobic zone. In the specific application process, the height of the inlet end of the shunt pipe is reasonably designed, so that the proper water level height in the adjusting area is ensured, and the scum is in a floating state to be conveniently salvaged and removed.
The MFBR reaction zone is divided into a fluidized bed aerobic zone 4 and a fixed bed aerobic zone 5 by a partition plate, the volume ratio of the fluidized bed aerobic zone to the fixed bed aerobic zone is 1:6-1:1 so as to reasonably and fully exert the function of each aerobic zone, the anaerobic zone is communicated with the fluidized bed aerobic zone through a water passing hole 14 formed in the top, the fluidized bed aerobic zone is communicated with the fixed bed aerobic zone through a water passing hole formed in the bottom, fluidized fillers 15 and fixed fillers 16 are respectively arranged in the fluidized bed aerobic zone and the fixed bed aerobic zone through a grid basket 17, and particularly, the grid basket in the fluidized bed aerobic zone can be an uncovered basket or a covered basket, and the uncovered basket is convenient for replacing the fluidized fillers; if a covered basket is used, the distance from the upper cover to the top of the zone is 1/3-2/3 of the overall height of the zone. The bottom of the MFBR reaction zone is provided with an aeration pipe 18 which can aerate both the fluidized bed aerobic zone and the fixed bed aerobic zone, and the top of the fluidized bed aerobic zone can be provided with an aeration pipe which is convenient for filling materials to be in a fluidized state.
The sedimentation separation zone is communicated with the fixed bed aerobic zone through a water hole 14 formed in the top, a water outlet pipe 23 is arranged at the top of the other side of the sedimentation separation zone, a baffle plate 22 is arranged on one side, close to the fixed bed aerobic zone, of the sedimentation separation zone, the baffle plate has the functions of blocking and guiding purified sewage, and water flowing out of the fixed bed aerobic zone keeps the downward flowing trend so as to improve the sedimentation effect. An air lifting device is arranged between the baffle plate and the fixed bed aerobic zone, the liquid outlet end of the air lifting device is communicated with the anoxic zone through a return pipe 19, the air lifting device and the aeration pipe provide air sources through the same air pump 25, and the air lifting device can suck the mixed liquid in the precipitation separation zone back to the anoxic zone for circular treatment, so that circular treatment of sewage is realized, and the improvement of the sewage treatment effect is further facilitated. In order to improve the uniformity of circulating water distribution, a water distribution pipe 13 is arranged at one end of the return pipe communicated with the anoxic zone, and a plurality of water distribution holes are uniformly formed in the side wall of the water distribution pipe.
When sewage is treated, the sewage flows back in sequence and flows out of the water outlet pipe after flowing through the regulating region, the intermediate reaction region, the fluidized bed aerobic region, the fixed bed aerobic region and the precipitation separation region, unattended full-automatic operation can be realized, and the treatment effect is stable and reliable.
For verifying the treatment effect of the device, the integrated device is used in a village in Hunan province to treat domestic sewage in a rural area in Hunan province, and the water inflow is 1m3D, debugging and filming the equipment to ensure that the filler is subjected to continuous water inlet treatment after successful filming, adjusting the aeration rate of the MFBR reaction zone to be 12L/min, and the water outlet result during normal operation is shown in the following table 1 for CODcr、BOD5SS, TN and NH4 +The effluent of N stably reaches the primary A standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-; the TP effluent can stably reach the first grade B standard of pollutant discharge Standard of municipal wastewater treatment plant (GB 18918-2002).
TABLE 1 indexes of inlet and outlet water quality
As a further improvement of the technical scheme, the return pipe is provided with a valve 21, a return pipe section between the valve and the gas stripping device is provided with an exhaust branch pipe 20, the exhaust branch pipe can be communicated with the sludge tank, and the exhaust branch pipe extends from the return pipe; on the other hand, when the valve is closed, most of the sludge in the precipitation separation zone can be discharged through the discharge branch pipe.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. The utility model provides a MFBR sewage treatment plant, includes a processing section of thick bamboo which characterized in that: the interior of the treatment cylinder is divided into a regulating area, an intermediate reaction area, an MFBR reaction area and a precipitation separation area through which sewage flows in sequence; the MFBR reaction zone is divided into a fluidized bed aerobic zone communicated with the middle reaction zone and a fixed bed aerobic zone communicated with the precipitation separation zone, the fluidized bed aerobic zone and the fixed bed aerobic zone are communicated through water passing holes formed in the bottom, fluidized fillers and fixed fillers are respectively arranged in the fluidized bed aerobic zone and the fixed bed aerobic zone through grid baskets, and aeration pipes capable of aerating both the fluidized bed aerobic zone and the fixed bed aerobic zone are arranged at the bottom of the MFBR reaction zone; the precipitation separation area is internally provided with a gas stripping device, the liquid outlet end of the gas stripping device is communicated with the middle reaction area through a return pipe, and the gas stripping device and the aeration pipe provide a gas source through a gas pump.
2. An MFBR sewage treatment plant according to claim 1, wherein: the intermediate reaction zone comprises an anoxic zone and/or an anaerobic zone.
3. An MFBR sewage treatment plant according to claim 2, wherein: the middle reaction zone comprises an anaerobic zone and an anoxic zone which are arranged up and down, the anaerobic zone and the anoxic zone are separated by a partition plate with a water through hole, the anaerobic zone is communicated with the aerobic zone of the fluidized bed through the water through hole, inclined tube packing is arranged in the anoxic zone, the adjusting zone is respectively communicated with the anaerobic zone and the anoxic zone through a flow dividing pipe, and the liquid outlet end of the gas stripping device is communicated with the anoxic zone through a return pipe.
4. An MFBR sewage treatment plant according to claim 3, wherein: and a water distribution pipe is arranged at one end of the return pipe communicated with the anoxic zone.
5. An MFBR sewage treatment plant according to any one of claims 1-4, wherein: the top of the adjusting area is communicated with a water inlet pipe, a sand setting folded plate and a grid screen plate for filtering sewage are obliquely arranged on the top of the adjusting area, and a water outlet pipe is arranged on the precipitation separation area.
6. An MFBR sewage treatment plant according to claim 5, wherein: the sand setting folded plate is detachable, the inclination angle of the sand setting folded plate is 30-60 degrees, and the bottom of the grid mesh plate is provided with a baffle plate.
7. An MFBR sewage treatment plant according to claim 6, wherein: the volume ratio of the fluidized bed aerobic zone to the fixed bed aerobic zone is 1:6-1: 1.
8. An MFBR sewage treatment plant according to claim 7, wherein: a baffle plate is arranged on one side of the precipitation separation area close to the MFBR reaction area, and the gas stripping device is arranged between the baffle plate and the MFBR reaction area.
9. An MFBR sewage treatment plant according to claim 8, wherein: the return pipe is provided with a valve, and an exhaust branch pipe extends out of a return pipe section between the valve and the air lifting device.
10. An MFBR sewage treatment plant according to claim 9, wherein: the adjusting zone is positioned in the center of the treatment cylinder, and the intermediate reaction zone, the fluidized bed aerobic zone, the fixed bed aerobic zone and the precipitation separation zone are sequentially arranged around the adjusting zone in the circumferential direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921155604.8U CN211056898U (en) | 2019-07-22 | 2019-07-22 | MFBR sewage treatment plant |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921155604.8U CN211056898U (en) | 2019-07-22 | 2019-07-22 | MFBR sewage treatment plant |
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| CN211056898U true CN211056898U (en) | 2020-07-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436703A (en) * | 2019-07-22 | 2019-11-12 | 湖南航天凯天水务有限公司 | A kind of MFBR sewage-treatment plant |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110436703A (en) * | 2019-07-22 | 2019-11-12 | 湖南航天凯天水务有限公司 | A kind of MFBR sewage-treatment plant |
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