CN210711172U - Sludge-film symbiotic sewage treatment device - Google Patents
Sludge-film symbiotic sewage treatment device Download PDFInfo
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- CN210711172U CN210711172U CN201921480656.2U CN201921480656U CN210711172U CN 210711172 U CN210711172 U CN 210711172U CN 201921480656 U CN201921480656 U CN 201921480656U CN 210711172 U CN210711172 U CN 210711172U
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- 239000010865 sewage Substances 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000010802 sludge Substances 0.000 claims abstract description 41
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 26
- 239000001301 oxygen Substances 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 23
- 238000005276 aerator Methods 0.000 claims abstract description 22
- 239000000945 filler Substances 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 238000004062 sedimentation Methods 0.000 claims abstract description 11
- 230000001546 nitrifying effect Effects 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 5
- 238000000926 separation method Methods 0.000 claims description 10
- 239000012528 membrane Substances 0.000 claims description 7
- 238000012856 packing Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 13
- 230000015556 catabolic process Effects 0.000 abstract description 2
- 238000006731 degradation reaction Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 230000014759 maintenance of location Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- 239000011574 phosphorus Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
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Abstract
The utility model discloses a sludge-film symbiotic sewage treatment device, which comprises a cavity and a stirring aerator, a water inlet and distribution pipe and a sludge discharge pipe which are arranged at the bottom of the cavity; the sludge-water sedimentation separator is arranged in the aerobic zone, and the fixed biological filler or the suspended biological filler is arranged in the facultative zone to form a biological carrier for a biomembrane method; the device also comprises an oxygen supply aerator and a nitrifying liquid return pipe, and is used for guiding the nitrifying mixed liquid in the aerobic zone to the facultative zone. The facultative area and the aerobic area are arranged in the vertical direction, so that the degradation effect can be obviously improved, and the excellent sewage treatment effect can be achieved through the arranged stirring aerator, the oxygen supply aerator and the sludge-water precipitation separator.
Description
Technical Field
The utility model relates to a sewage treatment device, in particular to a sludge-biofilm symbiosis sewage treatment device.
Background
The biological sewage treatment process can be roughly divided into an activated sludge process and a biofilm process. The activated sludge process is to suspend and disperse microorganisms in a bioreactor in the form of activated sludge for culture, and the activated sludge is fully contacted with pollutants in the sewage entering the bioreactor in the whole space of the bioreactor, so that the pollutants are adsorbed and degraded finally, and the sewage is purified. The biomembrane method is that a biological carrier is placed in a bioreactor, microorganisms are attached to the surface of the biological carrier to form a biomembrane, pollutants in the sewage entering the bioreactor contact with the biomembrane and are adsorbed and degraded, and finally the sewage is purified. In the activated sludge reactor, microorganisms and pollutants are in a motion state, so that the contact probability of the microorganisms and the pollutants is high, and the reaction efficiency is high in macroscopic view. In the biofilm reactor, the microorganisms are in a static state, so that the contact probability of pollutants and the microorganisms is relatively small, and the reaction efficiency is low in macroscopic view. In the biofilm process, a biofilm falls off from a biological carrier after aging to form suspended sludge which is dispersed in a bioreactor. Therefore, in order to obtain purified water, both an activated sludge method and a biofilm method need to be followed by a sedimentation tank to realize sludge-water separation. Engineering practice shows that the sludge-water separation by the biomembrane method is easier, namely the sludge settleability by the biomembrane method is better, and the concentration of effluent suspended matters is lower; the activated sludge method has relatively difficult sludge-water separation, and particularly, sludge bulking is easy to occur, so that effluent is turbid. That is, the activated sludge process has a characteristic that the reaction efficiency is high but the sludge-water separation is difficult, whereas the biofilm process is just the opposite, and has a characteristic that the reaction efficiency is low but the sludge-water separation is easy.
If the biofilm is introduced into the activated sludge reactor, whether the advantages of high reaction efficiency of the activated sludge process and good sludge settleability of the biofilm process can be simultaneously obtained? CN2015106903001 discloses a "circulation-flow-ring-shaped multi-section mud-film symbiotic combined bioreactor and a sewage treatment process thereof", and CN2011100866782 discloses a "mud-film symbiotic SBR integrated sewage treatment device", which describe that activated sludge and a biological film are integrated into one system to form a mud-film symbiotic system, so that a good effect can be achieved. However, the existing processes related to the sludge-film symbiotic system are all developed on a plane, the occupied area of facilities is large, some systems are complex to control, some systems are unreasonable in design, and the sewage treatment effect needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the big, the unreasonable scheduling problem of system design of area among the prior art, provide a mud membrane intergrowth sewage treatment plant of vertical distribution.
In order to realize the purpose of the utility model, the utility model provides a following technical scheme:
a sludge-film symbiotic sewage treatment device comprises a cavity, wherein the inner space of the cavity is divided into a facultative area at the lower part and an aerobic area at the upper part, and a stirring aerator, a water inlet and distribution pipe and a sludge discharge pipe are arranged at the bottom of the cavity; the sludge-water sedimentation separator is arranged in the aerobic zone, a sludge-water separation zone is formed in the inner space of the sludge-water sedimentation separator, and a clear water overflow groove is formed in the center of the top of the sludge-water sedimentation separator and used for connecting clear water obtained after separation to the outside of the cavity; the device also comprises fixed biological filler or suspended biological filler which is arranged in the facultative zone to form a biological carrier of a biomembrane method; the oxygen supply aerator is arranged at the interface of the facultative zone and the aerobic zone; and the nitrification liquid return pipe is used for guiding the nitrification mixed liquid in the aerobic zone to the facultative zone. The beneficial effects are that: the facultative area and the aerobic area are arranged in the vertical direction, the degradation effect can be obviously improved, and the excellent sewage treatment effect is achieved through the arranged stirring aerator, the oxygen supply aerator and the sludge-water precipitation separator.
Preferably, the immobilized biological filler is a honeycomb filler.
Preferably, the sludge-water precipitation separator adopts an aerobic three-phase separator. The aerobic three-phase separator is the patent technology invented by the inventor, and the structure of the aerobic three-phase separator is not described in detail in the specification. The aerobic three-phase separator in the invention can adopt any one of the aerobic three-phase separators disclosed in the following 6 patents: publication No. CN106186293A, aerobic three-phase separator and its application method in sewage treatment; publication No. CN106145316A, aerobic three-phase separator with flow guide pipe and its application method in sewage treatment; the publication No. CN207361869U, an aerobic three-phase separator arranged outside the draft tube; no. CN202849149U, aerobic three-phase separator; publication No. CN107827234A, a device and method for installing an aerobic three-phase separator without stopping production; publication No. CN207418381U, an aerobic three-phase separator.
Preferably, a honeycomb filler is arranged in the downflow channel of the aerobic three-phase separator.
Generally, when the sludge concentration in the apparatus reaches a set value, the sludge-water mixture is discharged through the sludge discharge pipe.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the occupied area is small. Compared with the horizontal arrangement, the vertical arrangement of the facultative area and the aerobic area occupies smaller land area, and the land expenditure is saved.
2. The sludge settling property is good, and the denitrification efficiency is high. The vertical arrangement mode makes the sedimentation performance good, and through the reasonable cooperation of stirring aerator, oxygen supply aerator and sludge-water sedimentation separator to and adopted adjustable nitrifying liquid back flow, make system design more reasonable, denitrogenation efficiency is higher.
3. The sewage treatment effect is improved. The facultative area and the downflow channel are optimally provided with honeycomb fillers, and the sewage treatment effect of the device is greatly improved.
Description of the drawings:
fig. 1 is a schematic structural diagram of the sludge-membrane symbiotic sewage treatment device of the utility model.
The labels in the figure are: 1-an aerobic zone, 2-a facultative zone, 3-a sludge-water sedimentation separator, 4-a clear water overflow trough, 5-a downflow channel, 6-a nitrifying liquid reflux pipe, 7-an oxygen supply aerator, 8-a biological filler, 9-a stirring aerator and 10-a sludge automatic reflux channel.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments.
Example 1
As shown in figure 1, the depth of water in the biological reaction tank is 6m, the space formed by the position 2m away from the bottom of the tank and the bottom of the tank is a facultative area 2, the space above 2m forms an aerobic area 1, the bottom of the tank is provided with a water inlet pipe and a sludge discharge pipe, a stirring aerator 9 is arranged at the bottom of the tank to intermittently supply oxygen to the facultative area 2 and stir the sludge-water mixed liquid at the bottom of the tank, the intermittent oxygen supply is carried out according to the oxygen demand of the facultative area, and the nitrified sludge deposited at the bottom is stirred, so that the nitrified sludge and the incoming sewage are fully mixed, and the sewage treatment effect is. Biological filler 8 is arranged in the pool bottom facultative zone 2, and oxygen supply aerator 7 is arranged at the interface of the facultative zone 2 and the aerobic zone 1. The nitrifying liquid return pipe 6 is an empty pipe, and the nitrifying liquid return pipe 6 guides nitrifying sludge in the aerobic zone 1 to the bottom of the facultative zone 2 under the push of bubbles provided by the oxygen supply aerator 7. The sludge-water precipitation separator 3 adopts an aerobic three-phase separator and is arranged in the aerobic zone 1. During specific work, sewage enters from a water inlet pipe at the bottom of the tank, is intermittently stirred and supplied with oxygen by a stirring aerator 9, and the mixed liquid of the sewage and the nitrified sludge is adsorbed and degraded by biological filler 8 in the facultative zone 2; then the sewage further rises, under the continuous oxygen supply of the oxygen supply aerator 7, the sewage and the nitrified sludge are further fully mixed for aerobic nitrification reaction, a part of mixed liquid of the sewage and the sludge enters the aerobic three-phase separator from the flow-down channel 5 for sludge-water separation, the separated clear water flows out of the system through the clear water overflow trough 4, and the separated sludge flows back to the aerobic zone 1 through the automatic sludge return channel 10.
The bottom of the biological reaction tank is provided with a suspended fixed soft biological filler with the height of 2m, and the biological reaction tank adopts the medicine addition to assist the dephosphorization, and the total hydraulic retention time is 12 hours. During operation, the dissolved oxygen concentration of the aerobic zone is maintained to be 1.5-2.5mg/L, the dissolved oxygen concentration of the facultative zone is less than 0.2mg/L, and the activated sludge concentration is 7000 mg/L. The operation effect is as follows: aerobic granular sludge appears in the system, and the average effluent quality of the system is COD25 mg/L, ammonia nitrogen 0.4mg/L, total nitrogen 7mg/L and total phosphorus 0.3 mg/L.
Example 2
The biological reaction tank is 6m deep in water, and microporous aerators are arranged at the bottom and 2m away from the bottom and are respectively used for supplying oxygen and stirring; the bottom of the biological reaction tank is provided with a suspension ball biological filler with the height of 2m, the reactor is used for treating municipal domestic sewage, and the reactor is added with medicine to assist in dephosphorization, and the total hydraulic retention time is 12 hours. During operation, the dissolved oxygen concentration of the aerobic zone is maintained to be 1.2-2.2mg/L, the dissolved oxygen concentration of the facultative zone is less than 0.2mg/L, and the activated sludge concentration is 6000 mg/L. The operation effect is as follows: aerobic granular sludge appears in the system, and the average effluent quality of the system is COD28mg/L, ammonia nitrogen 0.5mg/L, total nitrogen 8mg/L and total phosphorus 0.3 mg/L.
Example 3
The biological reaction tank is 6.5m deep in water, and microporous aerators are respectively arranged at the bottom and 2.5m away from the bottom and are respectively used for supplying oxygen and stirring; the bottom of the biological reaction tank is provided with a honeycomb filler with the height of 2.5m and a water inlet and distribution pipe, and the top is provided with an aerobic three-phase separator. The reactor is used for treating municipal domestic sewage, and the total hydraulic retention time is 12.5 hours by adding drugs to assist in dephosphorization. During operation, the dissolved oxygen concentration of the aerobic zone is maintained to be 1.0-2.0mg/L, the dissolved oxygen concentration of the facultative zone is less than 0.15mg/L, and the activated sludge concentration is 6500 mg/L. The operation effect is as follows: aerobic granular sludge appears in the system, the proportion of the granular sludge is about 50 percent, and the average effluent quality of the system is 22mg/L of COD, 0.2mg/L of ammonia nitrogen, 5mg/L of total nitrogen and 0.3mg/L of total phosphorus.
Example 4
The biological reaction tank is 6.5m deep in water, and microporous aerators are respectively arranged at the bottom and 2.5m away from the bottom and are respectively used for supplying oxygen and stirring; the bottom of the biological reaction tank is provided with a honeycomb filler with the height of 2.5m and a water inlet and distribution pipe, the top of the biological reaction tank is provided with an aerobic three-phase separator, and a down-flow channel of the aerobic three-phase separator is internally provided with the honeycomb filler. The reactor is used for treating municipal domestic sewage, and the total hydraulic retention time is 11 hours by adding drugs to assist in dephosphorization. During operation, the dissolved oxygen concentration of the aerobic zone is maintained to be 1.0-1.5mg/L, the dissolved oxygen concentration of the facultative zone is less than 0.15mg/L, and the activated sludge concentration is 8000 mg/L. The operation effect is as follows: aerobic granular sludge appears in the system, the proportion of the granular sludge is more than 80 percent, and the average effluent quality of the system is 25mg/L of COD, 0.3mg/L of ammonia nitrogen, 3mg/L of total nitrogen and 0.2mg/L of total phosphorus.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made according to the scope of the claims of the present invention should be covered by the claims of the present invention.
Claims (4)
1. A sludge-membrane symbiotic sewage treatment device is characterized by comprising:
the inner space of the cavity is divided into a facultative area (2) at the lower part and an aerobic area (1) at the upper part, and the bottom of the cavity is provided with a stirring aerator (9), a water inlet and distribution pipe and a sludge discharge pipe;
the sludge-water sedimentation separator (3) is arranged in the aerobic zone (1), a sludge-water separation zone is formed in the inner space of the sludge-water sedimentation separator (3), and a clear water overflow groove (4) is formed in the center of the top of the sludge-water sedimentation separator (3) and is used for connecting the clear water obtained after separation to the outside of the cavity;
the biological filler (8) is a fixed biological filler or a suspended biological filler, is arranged in the facultative zone (2) and forms a biological carrier of a biological membrane method;
an oxygen supply aerator (7) arranged at the interface of the facultative zone (2) and the aerobic zone (1);
and the nitrifying liquid return pipe (6) is used for guiding the nitrifying mixed liquid in the aerobic zone (1) to the facultative zone (2).
2. The sludge-membrane symbiotic sewage treatment device according to claim 1, wherein the immobilized biological filler is a honeycomb filler.
3. The sludge-membrane symbiotic sewage treatment plant according to claim 1, wherein the sludge-water precipitation separator (3) is an aerobic three-phase separator.
4. The sludge-membrane symbiotic sewage treatment plant according to claim 3, wherein the downflow channel (5) of the aerobic three-phase separator is internally provided with honeycomb packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201921480656.2U CN210711172U (en) | 2019-09-06 | 2019-09-06 | Sludge-film symbiotic sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921480656.2U CN210711172U (en) | 2019-09-06 | 2019-09-06 | Sludge-film symbiotic sewage treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022036759A1 (en) * | 2020-08-18 | 2022-02-24 | 浙江海河环境科技有限公司 | Integrated device and method for biological treatment of organic sewage containing cod and nitrogen via a/o tower |
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2019
- 2019-09-06 CN CN201921480656.2U patent/CN210711172U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022036759A1 (en) * | 2020-08-18 | 2022-02-24 | 浙江海河环境科技有限公司 | Integrated device and method for biological treatment of organic sewage containing cod and nitrogen via a/o tower |
| US12103882B2 (en) | 2020-08-18 | 2024-10-01 | Zhejiang Haihe Environmental Technology Co., Ltd. | A/O tower integrated device for biological treatment of organic sewage containing COD and nitrogen and method by using the same |
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Address after: C527, 5 / F, Research Institute, Tsinghua University, No. 019, Gaoxin South 7th Road, community, high tech Zone, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Qingyan Environmental Technology Co.,Ltd. Address before: C527, 5 / F, Research Institute, Tsinghua University, No. 019, Gaoxin South 7th Road, community, high tech Zone, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Qingyan Environmental Technology Co.,Ltd. Address after: C527, 5 / F, Research Institute, Tsinghua University, No. 019, Gaoxin South 7th Road, community, high tech Zone, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Qingyan Environmental Technology Co.,Ltd. Address before: C527, 5 / F, Research Institute, Tsinghua University, No. 019, Gaoxin South 7th Road, community, high tech Zone, Yuehai street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN QINGYAN ENVIRONMENTAL TECHNOLOGY Co.,Ltd. |
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