CN116903194A - MABC (MABC) treatment system and method for ecological restoration of river and lake water - Google Patents
MABC (MABC) treatment system and method for ecological restoration of river and lake water Download PDFInfo
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- CN116903194A CN116903194A CN202311081936.7A CN202311081936A CN116903194A CN 116903194 A CN116903194 A CN 116903194A CN 202311081936 A CN202311081936 A CN 202311081936A CN 116903194 A CN116903194 A CN 116903194A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 122
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000010865 sewage Substances 0.000 claims abstract description 66
- 238000000746 purification Methods 0.000 claims abstract description 35
- 238000004062 sedimentation Methods 0.000 claims abstract description 28
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000004804 winding Methods 0.000 claims description 102
- 239000012528 membrane Substances 0.000 claims description 56
- 239000010802 sludge Substances 0.000 claims description 32
- 238000003825 pressing Methods 0.000 claims description 30
- 238000005273 aeration Methods 0.000 claims description 19
- 244000005700 microbiome Species 0.000 claims description 17
- 239000010410 layer Substances 0.000 claims description 16
- 239000011229 interlayer Substances 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 5
- 238000005188 flotation Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 230000000881 depressing effect Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010170 biological method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- 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
-
- 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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- 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)
- Activated Sludge Processes (AREA)
Abstract
The invention provides a river and lake water restoration MABC treatment system and method, comprising a sewage regulating tank, a MABC reaction tank, a secondary sedimentation tank, an air floatation machine, an upstream subsurface flow wetland purification zone and a downstream surface flow wetland purification zone, wherein the sewage regulating tank receives sewage interception sewage and is conveyed to the MABC reaction tank after treatment, water treated by the MABC reaction tank is conveyed to the secondary sedimentation tank, water treated by the secondary sedimentation tank is conveyed to the air floatation machine, and is conveyed to the upstream subsurface flow wetland purification zone after being treated by the air floatation machine, and is conveyed to the downstream surface flow wetland purification zone after being treated by the upstream subsurface flow wetland purification zone. The river and lake water ecological treatment system and the method provided by the invention can enable the water quality of the effluent to reach the environmental protection water quality requirement after multistage purification and treatment, and solve the problem of poor effect of the existing river and lake water treatment scheme.
Description
Technical Field
The invention relates to the technical field of water treatment, in particular to a system and a method for ecological restoration MABC (MABC) treatment of river and lake water.
Background
With the rapid development of social economy, the urban modern construction steps are continuously accelerated, a large amount of wastewater and sewage are discharged in social production life, and if the wastewater and sewage and initial rainwater are not fully treated and are directly discharged into rivers and lakes, water environment pollution of the rivers and lakes can be caused, the content of aerobic organic matters is increased, and even serious black and odorous problems occur. At present, river and lake water body treatment methods are numerous, the physical and chemical method is fast, the biological method is safe and reliable, the treatment period is long, and a plurality of methods are combined to purify the water body.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a system and a method for ecologically repairing MABC (MABC) in river and lake water, and solve the problem of poor effect of the existing river and lake water treatment scheme.
In order to solve the technical problems, the invention provides a ecological restoration MABC treatment system for river and lake water, which comprises a sewage regulating tank, a MABC reaction tank, a secondary sedimentation tank, an air floatation machine, an upstream subsurface flow wetland purification zone and a downstream surface flow wetland purification zone, wherein the sewage regulating tank receives sewage interception sewage and conveys the sewage to the MABC reaction tank after treatment, water treated by the MABC reaction tank is conveyed to the secondary sedimentation tank, water treated by the secondary sedimentation tank is conveyed to the air floatation machine, and is conveyed to the upstream subsurface flow wetland purification zone after being treated by the air floatation machine, and is conveyed to the downstream surface flow wetland purification zone after being treated by the upstream subsurface flow wetland purification zone.
The invention provides a river and lake water ecological restoration MABC treatment system, which also comprises a condensation water tank, wherein the condensation water tank is connected with the water inlet end of the MABC reaction tank so as to cool down and cool water in the MABC reaction tank, and then the water is conveyed back into the MABC reaction tank.
The invention provides a river and lake water ecological restoration MABC treatment system, which also comprises a surplus sludge pool, wherein the surplus sludge pool is connected with the secondary sedimentation tank and the air floatation machine and respectively receives sludge discharged by the secondary sedimentation tank and the air floatation machine.
The invention provides a river and lake water ecological restoration MABC treatment system, which further comprises a spiral shell stacking machine, wherein the spiral shell stacking machine is connected with a sludge outlet of the excess sludge pond.
The MABC reaction tank comprises: the device comprises a closed box body, wherein a water inlet filter cavity and a reaction cavity are arranged in the closed box body, a water inlet filter grid is arranged in the water inlet filter cavity, the water inlet filter cavity is communicated with the reaction cavity, a plurality of winding type biological reaction modules are sequentially arranged in the reaction cavity, each winding type biological reaction module comprises a first winding type biological reaction film, a second winding type biological reaction film, a first air inlet pipe, a second air inlet pipe, a first pressing impeller and a second pressing impeller, the centers of the first winding type biological reaction film and the second winding type biological reaction film are respectively provided with a hollow through hole, the first winding type biological reaction film and the second winding type biological reaction film are coaxially arranged in the vertical direction so that the two through holes are communicated up and down, the first winding type biological reaction film is positioned at the upper part, the second winding type biological reaction film is positioned at the lower part, and a gap is reserved between the first winding type biological reaction film and the second winding type biological reaction film; the top parts of the first winding type biological reaction membrane and the second winding type biological reaction membrane are respectively connected with the first air inlet pipe, the bottom parts of the first winding type biological reaction membrane and the second winding type biological reaction membrane are respectively connected with the condensed water collecting pipe, and the condensed water collecting pipes are connected into the water inlet filter cavity; a plurality of aeration pipes which are arranged side by side are arranged below the second winding type biological reaction membrane, and the bottom of the second winding type biological reaction membrane is close to the aeration pipes;
wherein the first pressing impeller is arranged below the liquid surface above the first winding type biological reaction film and is coaxially arranged with the first winding type biological reaction film, the rotation direction of the first pressing impeller is the same as the winding direction of the first winding type biological reaction film, and the radius of the first pressing impeller is the same as the radius of the first winding type biological reaction film;
the second pressing impeller is arranged between the second winding type biological reaction film and the first winding type biological reaction film and is coaxially arranged with the second winding type biological reaction film, the radius of the second pressing impeller is equal to that of a through hole of the second winding type biological reaction film, and a motor of the second pressing impeller is arranged in the through hole of the first winding type biological reaction film;
correspondingly, a horizontal bracket is respectively arranged above the first winding type biological reaction film, between the first winding type biological reaction film and the second winding type biological reaction film, and the first pressing impeller and the second pressing impeller are fixed on the corresponding horizontal brackets.
The first winding type biological reaction film is spirally wound, and a film cavity of the first winding type biological reaction film is filled with a porous expansion material, so that a film cavity with equal distance is formed between two side surfaces of the first winding type biological reaction film; both side surfaces of the first winding type biological reaction membrane are reaction membrane bodies; the air inlet pipe and the condensed water collecting pipe are respectively connected into the membrane cavity. The second coiled biological reaction film is spirally coiled, the coiling direction and the radius are the same as those of the first coiled biological reaction film, and the vertical length of the second coiled biological reaction film is larger than that of the first coiled biological reaction film.
The rotation direction of the first pressing impeller is opposite to the winding direction of the first winding type biological reaction film, so that part of sewage downwards enters an interlayer gap of the first winding type biological reaction film from the upper side of the first winding type biological reaction film and is converged along a through hole in the center of the reverse rotation flow direction of the first winding type biological reaction film, and the other part of sewage downwards flows through the interlayer gap of the first winding type biological reaction film and flows to a gap between the first winding type biological reaction film and the second winding type biological reaction film to form downward pressure on the second winding type biological reaction film; and enter into the through-hole of second coiling formula biological reaction membrane under the effect of second push down impeller, the spiral direction of second push down impeller is the same with the coiling direction of second coiling formula biological reaction membrane to make a part of sewage take the coiling formula to flow to outside along the interlaminar gap of second coiling formula biological reaction membrane, another part can flow downwards through the interlaminar gap of second coiling formula biological reaction membrane, and to the aeration pipe of bottom, thereby with the gas intensive mixing of aeration pipe escape, improved aeration mixing's efficiency.
The outer surface of the reaction membrane body is adhered with an aerobic microorganism layer, an anoxic microorganism layer and an anaerobic microorganism layer from inside to outside.
The ecological restoration MABC treatment method for river and lake water comprises the following steps:
the sewage regulating tank receives sewage interception sewage, processes the sewage and then conveys the sewage into the MABC reaction tank;
treating sewage by using a MABC reaction tank, and then conveying the sewage to a secondary sedimentation tank;
settling the sewage by the secondary sedimentation tank, and then conveying the treated sewage to an air floatation machine;
the air floatation machine is used for treating sewage and then conveying clear water to an upstream subsurface flow wetland purification zone;
the clean water is further purified by the upstream subsurface wetland purification zone and then is conveyed to the downstream surface wetland purification zone;
the clean water is purified by the downstream surface wetland purification area and then is conveyed to the river and the lake.
The invention provides a method for treating ecological restoration MABC of river and lake water, which further comprises the following steps:
the condensed water tank cools the sewage in the MABC reaction tank and returns the cooled sewage to the MABC reaction tank.
The invention provides a method for treating ecological restoration MABC of river and lake water, which further comprises the following steps:
and conveying the settled sludge obtained from the secondary sedimentation tank and the air-float sludge obtained from the air-float machine to the surplus sludge tank.
The river and lake water ecological treatment method provided by the invention further comprises the following steps:
and conveying the sludge to a spiral shell stacking machine by the excess sludge pool.
The river and lake water ecological treatment system and the method provided by the invention can enable the water quality of the effluent to reach the environmental protection water quality requirement after multistage purification and treatment, and solve the problem of poor effect of the existing river and lake water treatment scheme.
Drawings
FIG. 1 is a process structure and a flow chart of a ecological restoration MABC treatment system for river and lake water according to an embodiment of the invention.
FIG. 2 is a schematic top plan view of a MABC reactor in accordance with an embodiment of the present invention.
FIG. 3 is a schematic diagram illustrating a bottom plan view of a MABC reaction chamber in accordance with an embodiment of the present invention.
FIG. 4 is a schematic side view of a MABC reaction chamber according to an embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a coiled bioreactor module according to an embodiment of the present invention.
Fig. 6 is a schematic perspective view of a rolled biological reaction film according to an embodiment of the invention.
Fig. 7 is a schematic view of a layer cross-sectional structure of a rolled bio-reactive film according to an embodiment of the invention.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1-7, the invention provides a ecological restoration MABC treatment system for river and lake water, which comprises a sewage regulating tank 1, a MABC reaction tank 2, a secondary sedimentation tank 3, an air floatation machine 4, an upstream subsurface flow wetland purification zone 5 and a downstream surface flow wetland purification zone 6, wherein the sewage regulating tank receives sewage interception and is conveyed to the MABC reaction tank after treatment, water treated by the MABC reaction tank 2 is conveyed to the secondary sedimentation tank 3, water treated by the secondary sedimentation tank 3 is conveyed to the air floatation machine, water treated by the air floatation machine 4 is conveyed to the upstream subsurface flow wetland purification zone 5, and water treated by the upstream subsurface flow wetland purification zone 5 is conveyed to the downstream surface flow wetland purification zone 6.
The invention provides a river and lake water ecological restoration MABC treatment system, which further comprises a condensate water tank 7, wherein the condensate water tank is connected with the water inlet end of the MABC reaction tank 2 so as to cool down and cool water in the MABC reaction tank 2, and then the water is conveyed back into the MABC reaction tank 2.
The invention provides a river and lake water ecological restoration MABC treatment system, which further comprises a surplus sludge pool 8, wherein the surplus sludge pool 8 is connected with the secondary sedimentation tank 3 and the air flotation machine 4 and respectively receives sludge discharged by the secondary sedimentation tank 3 and the air flotation machine 4.
The invention provides a river and lake water ecological restoration MABC treatment system, which further comprises a spiral shell stacking machine 9, wherein the spiral shell stacking machine 9 is connected with a sludge outlet of the excess sludge pond.
The MABC reaction tank 2 comprises: the closed box, be equipped with into water filter chamber 21 and reaction chamber in the closed box inside, be equipped with into water filter grating in the water filter chamber, into water filter chamber and reaction chamber intercommunication, into water filter grating that water filter intracavity set up can filter the processing to water, filters suspended solid, the particulate matter in the water, and into water filter grating adopts the grid structure of shutter formula, for example the rainwater filter grating of CN104105832A disclosure.
A plurality of winding type biological reaction modules 22 are sequentially arranged in the reaction cavity, wherein each winding type biological reaction module 22 comprises a first winding type biological reaction membrane 221, a second winding type biological reaction membrane 222, a first air inlet pipe, a second air inlet pipe, a first pressing impeller 223 and a second pressing impeller 224, hollow through holes 220 are respectively formed in the centers of the first winding type biological reaction membrane 221 and the second winding type biological reaction membrane 222, the first winding type biological reaction membrane and the second winding type biological reaction membrane are coaxially arranged in the vertical direction so that the two through holes penetrate up and down, the first winding type biological reaction membrane 221 is positioned at the upper part, the second winding type biological reaction membrane 222 is positioned at the lower part, and a gap is reserved between the first winding type biological reaction membrane 221 and the second winding type biological reaction membrane 222; the top of the first coiled biological reaction membrane 221 and the top of the second coiled biological reaction membrane 222 are respectively connected with the first air inlet pipe, the bottom of the first coiled biological reaction membrane is respectively connected with the condensed water collecting pipe 228, and the condensed water collecting pipe 228 is connected into the water inlet filter cavity 21; the condensate collection tube 228 is capable of collecting condensed water within the membrane lumens of the biological reaction membrane, avoiding water accumulation within the membrane lumens, and rapidly draining water into the inlet filter chamber 21.
And, a plurality of aeration pipes 229 arranged side by side are arranged below the second wound type biological reaction membrane, and the bottom of the second wound type biological reaction membrane is close to the aeration pipes 229; the aeration pipe 229 is provided with a porous net film which is breathable but waterproof, and the pressure of the gas in the aeration pipe 229 is slightly greater than the water pressure of the position of the aeration pipe 229, so that the gas molecules can slowly escape, and the aeration pipe 229 is connected with an external pressurizing pump.
Wherein the first depressing impeller 223 is disposed below the liquid surface above the first rolled bio-reaction film and is coaxially arranged with the first rolled bio-reaction film, the rotation direction of the first depressing impeller is the same as the rolling direction of the first rolled bio-reaction film, and the radius of the first depressing impeller is the same as the radius of the first rolled bio-reaction film;
the second pressing impeller 224 is disposed between the second rolled biological reaction film and the first rolled biological reaction film and is coaxially disposed with the second rolled biological reaction film, the radius of the second pressing impeller is equal to the radius of the through hole of the second rolled biological reaction film, and the motor of the second pressing impeller is disposed in the through hole of the first rolled biological reaction film;
accordingly, a horizontal bracket is disposed above the first rolled bio-reaction film 221 and between the first rolled bio-reaction film 221 and the second rolled bio-reaction film 222, respectively, and the first and second push-down impellers 223 and 224 are fixed on the corresponding horizontal brackets.
The first wound-type bio-reaction membrane 221 is spirally wound, and a membrane cavity of the first wound-type bio-reaction membrane 221 is filled with a porous expansion material, so that a membrane cavity with equal distance is formed between two side surfaces of the first wound-type bio-reaction membrane 221; both side surfaces of the first winding type biological reaction membrane 221 are breathable but waterproof reaction membrane bodies; the air inlet pipe and the condensed water collecting pipe are respectively connected into the membrane cavity. The second rolled bio-reaction film 222 is spirally rolled, and the direction and radius of the rolling are the same as those of the first rolled bio-reaction film 221, and the vertical length of the second rolled bio-reaction film 222 is longer than that of the first rolled bio-reaction film 221. More preferably, the vertical length of the second rolled bio-film 222 is about 2 times that of the first rolled bio-film 221, so that a path through which sewage flows down in an interlayer gap of the first rolled bio-film 221 is shorter, pressure is better applied to the second rolled bio-film 222, and the vertical length of the second rolled bio-film is longer, so that the residence time of sewage in the interlayer gap of the second rolled bio-film 222 is longer, and thus the sewage can be better purified.
The first pressing impeller 223 has a rotation direction opposite to the winding direction of the first rolled bio-film so that a part of the sewage enters downward into the interlayer gap of the first rolled bio-film from above the first rolled bio-film 221 and converges along the through hole of the reverse rotation flow direction center of the first rolled bio-film 221, and the other part can flow downward through the interlayer gap of the first rolled bio-film 221 and flows to the gap between the first rolled bio-film 221 and the second rolled bio-film 222 to form a downward pressure on the second rolled bio-film 222; and enters the through hole of the second rolled biological reaction film under the action of the second pressing impeller 224, the rotation direction of the second pressing impeller 224 is the same as the rolling direction of the second rolled biological reaction film 222, so that a part of sewage can flow outwards in a rolling way along the interlayer gap of the second rolled biological reaction film 222, and the other part of sewage can flow downwards through the interlayer gap of the second rolled biological reaction film 222 and flows to the aeration pipe at the bottom, thereby being fully mixed with the gas escaping from the aeration pipe 229 and improving the aeration mixing efficiency.
The outer surface of the reaction membrane body is adhered with an aerobic microorganism layer, an anoxic microorganism layer and an anaerobic microorganism layer from inside to outside. The air firstly enters the aerobic microorganism layer, so that microorganisms in the aerobic microorganism layer can purify water quality, then oxygen is consumed for a certain amount to reach the anoxic microorganism layer, the microorganisms in the anoxic microorganism layer purify the water quality, and the microorganisms in the anaerobic microorganism layer purify the water quality after the oxygen is consumed. The microbial layer attached to the outer surface of the reaction membrane is formed by culture, and the sludge is usually introduced into a MABC reaction tank for a period of time to form a stable microbial community.
The invention also discloses a method for ecologically repairing MABC in river and lake water, which comprises the following steps:
the sewage regulating tank receives sewage interception sewage, processes the sewage and then conveys the sewage into the MABC reaction tank;
treating sewage by using a MABC reaction tank, and then conveying the sewage to a secondary sedimentation tank;
settling the sewage by the secondary sedimentation tank, and then conveying the treated sewage to an air floatation machine;
the air floatation machine is used for treating sewage and then conveying clear water to an upstream subsurface flow wetland purification zone;
the clean water is further purified by the upstream subsurface wetland purification zone and then is conveyed to the downstream surface wetland purification zone;
the clean water is purified by the downstream surface wetland purification area and then is conveyed to the river and the lake.
The invention provides a method for treating ecological restoration MABC of river and lake water, which further comprises the following steps:
the condensed water tank cools the sewage in the MABC reaction tank and returns the cooled sewage to the MABC reaction tank.
The invention provides a method for treating ecological restoration MABC of river and lake water, which further comprises the following steps:
and conveying the settled sludge obtained from the secondary sedimentation tank and the air-float sludge obtained from the air-float machine to the surplus sludge tank.
The river and lake water ecological treatment method provided by the invention further comprises the following steps:
and conveying the sludge to a spiral shell stacking machine by the excess sludge pool.
The river and lake water quality restoration MABC treatment system and method provided by the invention can enable the effluent water quality to reach the environment-friendly water quality requirement after multistage purification and treatment, and solve the problem of poor effect of the existing river and lake water body treatment scheme.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (10)
1. The ecological restoration MABC treatment system comprises a sewage regulating tank, a MABC reaction tank, a secondary sedimentation tank, an air floatation machine, an upstream subsurface flow wetland purification zone and a downstream surface flow wetland purification zone, wherein the sewage regulating tank receives sewage interception sewage and conveys the sewage to the MABC reaction tank after treatment, water treated by the MABC reaction tank is conveyed to the secondary sedimentation tank, water treated by the secondary sedimentation tank is conveyed to the air floatation machine, and is conveyed to the upstream subsurface flow wetland purification zone after being treated by the air floatation machine, and is conveyed to the downstream surface flow wetland purification zone after being treated by the upstream subsurface flow wetland purification zone.
2. The ecological river/lake water treatment system according to claim 1, further comprising a condensate tank connected to the water inlet end of the MABC reaction tank to cool down water in the MABC reaction tank before being fed back into the MABC reaction tank.
3. The river/lake water ecological treatment system of claim 1 further comprising a surplus sludge basin, the surplus sludge basin being connected to the secondary sedimentation basin and the air flotation machine and receiving sludge discharged from the secondary sedimentation basin and the air flotation machine, respectively.
4. The river/lake water ecology treatment system of claim 1 further comprising a spiral shell stacking machine connected to a sludge outlet of the excess sludge basin.
5. The river/lake water ecology treatment system of claim 1 wherein,
the MABC reaction tank comprises: the device comprises a closed box body, wherein a water inlet filter cavity and a reaction cavity are arranged in the closed box body, a water inlet filter grid is arranged in the water inlet filter cavity, the water inlet filter cavity is communicated with the reaction cavity, a plurality of winding type biological reaction modules are sequentially arranged in the reaction cavity, each winding type biological reaction module comprises a first winding type biological reaction film, a second winding type biological reaction film, a first air inlet pipe, a second air inlet pipe, a first pressing impeller and a second pressing impeller, the centers of the first winding type biological reaction film and the second winding type biological reaction film are respectively provided with a hollow through hole, the first winding type biological reaction film and the second winding type biological reaction film are coaxially arranged in the vertical direction so that the two through holes are communicated up and down, the first winding type biological reaction film is positioned at the upper part, the second winding type biological reaction film is positioned at the lower part, and a gap is reserved between the first winding type biological reaction film and the second winding type biological reaction film; the top parts of the first winding type biological reaction membrane and the second winding type biological reaction membrane are respectively connected with the first air inlet pipe, the bottom parts of the first winding type biological reaction membrane and the second winding type biological reaction membrane are respectively connected with the condensed water collecting pipe, and the condensed water collecting pipes are connected into the water inlet filter cavity; a plurality of aeration pipes which are arranged side by side are arranged below the second winding type biological reaction membrane, and the bottom of the second winding type biological reaction membrane is close to the aeration pipes;
wherein the first pressing impeller is arranged below the liquid surface above the first winding type biological reaction film and is coaxially arranged with the first winding type biological reaction film, the rotation direction of the first pressing impeller is the same as the winding direction of the first winding type biological reaction film, and the radius of the first pressing impeller is the same as the radius of the first winding type biological reaction film;
the second pressing impeller is arranged between the second winding type biological reaction film and the first winding type biological reaction film and is coaxially arranged with the second winding type biological reaction film, the radius of the second pressing impeller is equal to that of a through hole of the second winding type biological reaction film, and a motor of the second pressing impeller is arranged in the through hole of the first winding type biological reaction film;
correspondingly, a horizontal bracket is respectively arranged above the first winding type biological reaction film, between the first winding type biological reaction film and the second winding type biological reaction film, and the first pressing impeller and the second pressing impeller are fixed on the corresponding horizontal brackets.
6. The river/lake water ecology treatment system of claim 5 wherein,
the first winding type biological reaction film is spirally wound, and the film cavities of the first winding type biological reaction film are respectively filled with porous expansion materials, so that film cavities with equal distance are formed between two side surfaces of the first winding type biological reaction film; both sides of the first winding type biological reaction membrane are breathable but waterproof reaction membrane bodies; the air inlet pipe and the condensed water collecting pipe are respectively connected into the membrane cavity. The second coiled biological reaction film is spirally coiled, the coiling direction and the radius are the same as those of the first coiled biological reaction film, and the vertical length of the second coiled biological reaction film is larger than that of the first coiled biological reaction film.
The rotation direction of the first pressing impeller is opposite to the winding direction of the first winding type biological reaction film, so that part of sewage downwards enters an interlayer gap of the first winding type biological reaction film from the upper side of the first winding type biological reaction film and is converged along a through hole in the center of the reverse rotation flow direction of the first winding type biological reaction film, and the other part of sewage downwards flows through the interlayer gap of the first winding type biological reaction film and flows to a gap between the first winding type biological reaction film and the second winding type biological reaction film to form downward pressure on the second winding type biological reaction film; and enter into the through-hole of second coiling formula biological reaction membrane under the effect of second push down impeller, the spiral direction of second push down impeller is the same with the coiling direction of second coiling formula biological reaction membrane to make a part of sewage take the coiling formula to flow to outside along the interlaminar gap of second coiling formula biological reaction membrane, another part can flow downwards through the interlaminar gap of second coiling formula biological reaction membrane, and to the aeration pipe of bottom, thereby with the gas intensive mixing of aeration pipe escape, improved aeration mixing's efficiency.
The outer surface of the reaction membrane body is adhered with an aerobic microorganism layer, an anoxic microorganism layer and an anaerobic microorganism layer from inside to outside.
7. A method for ecologically treating river and lake water, comprising:
the sewage regulating tank receives sewage interception sewage, processes the sewage and then conveys the sewage into the MABC reaction tank;
treating sewage by using a MABC reaction tank, and then conveying the sewage to a secondary sedimentation tank;
settling the sewage by the secondary sedimentation tank, and then conveying the treated sewage to an air floatation machine;
the air floatation machine is used for treating sewage and then conveying clear water to an upstream subsurface flow wetland purification zone;
the clean water is further purified by the upstream subsurface wetland purification zone and then is conveyed to the downstream surface wetland purification zone;
the clean water is purified by the downstream surface wetland purification area and then is conveyed to the river and the lake.
8. The method for ecologically treating river and lake water of claim 7 further comprising:
the condensed water tank is used for collecting water in the condensed water collecting pipeline;
and the condensate water tank conveys the condensate water to the sewage regulating tank.
9. The method for ecologically treating river and lake water of claim 7 further comprising:
the settled sludge obtained from the secondary sedimentation tank and the air-float sludge obtained from the air-float machine are conveyed to a surplus sludge tank;
and delivering the return sludge to the MABC reaction tank by the secondary sedimentation tank.
10. The method for ecologically treating river and lake water of claim 7 further comprising:
and conveying the sludge to a spiral shell stacking machine by the excess sludge pool.
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