CN114426387B - Multi-organism synergistic sludge zero-emission integrated treatment equipment - Google Patents
Multi-organism synergistic sludge zero-emission integrated treatment equipment Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 85
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 241001233061 earthworms Species 0.000 claims abstract description 14
- 238000010992 reflux Methods 0.000 claims abstract description 13
- 239000004575 stone Substances 0.000 claims abstract description 13
- 239000003814 drug Substances 0.000 claims description 14
- 238000007667 floating Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 7
- 229940079593 drug Drugs 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 abstract description 22
- 244000005700 microbiome Species 0.000 abstract description 13
- 230000009467 reduction Effects 0.000 abstract description 7
- 238000004064 recycling Methods 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 3
- 230000018044 dehydration Effects 0.000 abstract description 3
- 238000006297 dehydration reaction Methods 0.000 abstract description 3
- 239000000945 filler Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 7
- 244000205574 Acorus calamus Species 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 235000011996 Calamus deerratus Nutrition 0.000 description 6
- 241000361919 Metaphire sieboldi Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000007787 solid Substances 0.000 description 5
- 241000894006 Bacteria Species 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000004060 metabolic process Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000029087 digestion Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000243686 Eisenia fetida Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000013872 defecation Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000037406 food intake Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003248 secreting effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses multi-organism synergistic sludge zero-emission integrated treatment equipment, which comprises a primary wetland treatment tank and a secondary wetland treatment tank, wherein the primary wetland treatment tank comprises a plant layer, a wormcast layer, a ceramsite layer and a water collecting layer which are sequentially arranged from top to bottom, and the side wall of the water collecting layer is provided with a dosing box communicated with the water collecting layer; the secondary wetland treatment pool comprises a plant layer, a cobble layer, a haydite layer and a medical stone layer which are sequentially arranged from top to bottom. A mud distribution pipe is arranged above the primary wetland treatment pond, and a water outlet pipe is arranged on the side wall of the bottom of the primary wetland treatment pond; a sludge reflux pump is arranged in the hollow area of the secondary wetland treatment tank, and the sludge reflux pump is used for refluxing the sludge in the water collecting layer to the primary wetland treatment tank through a sludge return pipe. The invention adopts the two-stage wetland treatment pool with the synergistic effect of earthworms, plants and microorganisms to realize sludge reduction and recycling treatment, does not need additional dehydration, runs more stably, does not generate blockage phenomenon, and can generate good social, ecological and economic benefits.
Description
Technical Field
The invention belongs to the technical field of sludge recycling treatment, and particularly relates to multi-organism synergistic sludge zero-emission integrated treatment equipment.
Background
The urban construction process of China is continuously accelerated, corresponding newly built sewage treatment plants are gradually increased, the surplus sludge is used as a sewage treatment byproduct, the output is huge and difficult to treat, and the annual output of the surplus sludge (the water content is 80%) of China reaches 3904 ten thousand tons at the end of 2019. At present, common excess sludge treatment is mainly carried out by methods of concentration, digestion, dehydration, desiccation and the like, and then is treated by methods of landfill, incineration, land utilization and the like, and the methods have the defects of high investment cost, more secondary pollution, low recycling utilization degree and the like, so that the popularization of the method is limited. Based on the background, how to realize the treatment and disposal of the surplus sludge in a recycling way becomes a problem to be solved in the ecological civilization construction process of China.
As an ecological environment-friendly treatment method for recycling the excess sludge, the earthworm filter tank has the characteristics of simple operation and maintenance, low energy consumption cost, environment friendliness and the like. In the earthworm filter tank, earthworms can realize the reduction and stabilization of residual sludge through the biological predation of the earthworms and the physiological actions of defecation, cavitation, intestinal digestion and the like. However, many experiments find that the interception capability of the earthworm filter tank to the residual sludge is weak, and the stay time is too short, so that the system is difficult to stably operate. The rhizosphere of the wetland plant can promote the interception effect of the wetland on organic matters, and meanwhile, the rhizosphere effect of the plant can promote the activity of earthworms and microorganisms and accelerate the degradation of the organic matters. Therefore, the wetland plants can be fully utilized in the earthworm filter tank to effectively solve the problem of insufficient treatment stability, so that the treatment way of the residual sludge is widened.
Disclosure of Invention
Aiming at the defects pointed out in the background technology, the invention provides multi-organism synergistic sludge zero-emission integrated treatment equipment, which aims to solve the problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the sludge zero-emission integrated treatment equipment comprises a primary wetland treatment tank and a secondary wetland treatment tank, wherein the horizontal cross-sectional area of the secondary wetland treatment tank is larger than that of the primary wetland treatment tank, the primary wetland treatment tank is arranged above the secondary wetland treatment tank, a sludge distribution pipe is arranged above the primary wetland treatment tank, a sludge inlet pipe is connected to the sludge distribution pipe, a primary water outlet pipe is arranged on the bottom side wall of the primary wetland treatment tank, a water outlet of the primary water outlet pipe is positioned above the secondary wetland treatment tank, and a secondary water outlet pipe is arranged on the bottom side wall of the secondary wetland treatment tank; the middle part of the secondary wetland treatment pond is a hollow area, a sludge reflux pump is arranged in the hollow area, a sludge return pipe is connected to the sludge reflux pump, a sludge inlet of the sludge return pipe is communicated with the bottom of the primary wetland treatment pond, and a sludge outlet of the sludge return pipe is connected to the sludge inlet pipe;
the first-stage wetland treatment pool comprises a first-stage plant layer, a wormcast layer, a first-stage ceramsite layer and a water collecting layer which are sequentially arranged from top to bottom, earthworms are inoculated in the wormcast layer, a dosing box is arranged on the side wall of the water collecting layer, and a drug outlet of the dosing box is communicated with the water collecting layer; the secondary wetland treatment pool comprises a secondary plant layer, a cobble layer, a secondary haydite layer and a medical stone layer which are sequentially arranged from top to bottom.
Preferably, an overflow weir is arranged above the secondary wetland treatment pool, the overflow weir is arranged at the periphery of the water collecting layer, the water outlet of the primary water outlet pipe is positioned in the overflow weir, and the peripheral edge of the overflow weir is in a zigzag shape.
Preferably, the primary wetland treatment pond comprises a plurality of alternate mud-feeding treatment areas, so that the replacement of the filler can be facilitated, and meanwhile, the continuity of mud treatment is ensured.
Preferably, the medicine outlet of the medicine adding box is provided with an electromagnetic valve, and a floating ball water level switch is arranged in the water collecting layer and is electrically connected with the electromagnetic valve.
Preferably, a stirrer is arranged in the water collecting layer, and the start-stop control end of the stirrer is electrically connected with the floating ball water level switch.
Preferably, the medicine adding box is provided with 1% Al 2 (SO 4 ) 3 ·18H 2 O solution.
Preferably, the bottom of the water collecting layer is an inclined plate which is obliquely arranged, and a mud inlet of the mud return pipe is positioned at the lower end of the inclined plate.
Preferably, each of the wormcast layer and the first-stage ceramsite layer, the first-stage ceramsite layer and the water collecting layer, the cobble layer and the second-stage ceramsite layer is provided with a partition plate, and through holes are distributed on the partition plates.
Preferably, the wormcast layer is detachably connected with the first-stage haydite layer, the cobblestone layer is detachably connected with the second-stage haydite layer and the medical stone layer, and the first-stage haydite layer is detachably supported above the water collecting layer through the support.
Compared with the defects and shortcomings of the prior art, the invention has the following beneficial effects:
(1) The invention adopts the two-stage wetland treatment tank to treat sludge, and the one-stage wetland treatment tank mainly realizes sludge reduction by retaining a foundation bed, feeding earthworms and degrading and converting sludge organics by microorganisms. Two-stage sagThe direct current wetland treatment pool mainly comprises a cobblestone layer, a haydite layer and a medical stone layer, and a calamus is planted on the upper part of the cobblestone layer. The secondary wetland treatment tank aims at denitrification and dephosphorization, the wetland is mainly used for removing nitrogen under the action of microorganisms, and NH in water 4 + N is first oxidized to NO by nitrifying bacteria under aerobic conditions x - Then NO x - Reduction to N by denitrifying bacteria under anoxic conditions 2 。
(2) The sludge reduction and recycling treatment are integrally realized by utilizing the synergistic effect of earthworms, plants and microorganisms, and no additional dehydration is needed; the carbon is circulated in the organism by multi-organism cooperative treatment. The processing equipment can be assembled, disassembled and replaced in a modularized mode, the operation is more stable, and the blocking phenomenon can not occur.
(3) The invention realizes the integration of sewage and sludge treatment and zero discharge of sludge and solves the sludge treatment and treatment problem of a sewage plant. The device has simple structure, convenient operation and lower maintenance and management cost, is suitable for treating urban and rural and decentralized excess sludge, and can generate good social, ecological and economic benefits.
Drawings
Fig. 1 is a schematic diagram of the inside of a front view structure of a multi-bio-cooperative sludge zero-emission integrated treatment device according to an embodiment of the present invention.
Fig. 2 is a schematic perspective view of a multi-bio-cooperative sludge zero-emission integrated treatment device according to an embodiment of the present invention.
In the figure: 1-a first-stage wetland treatment pool; 2-a secondary wetland treatment pool; 3-first order plant layers; 4-wormcast layer; 5-a first-level ceramsite layer; 6-a water collecting layer; 7-earthworm; 8-hollow area; 9-a secondary plant layer; 10-cobble layer; 11-a secondary haydite layer; 12-a medical stone layer; 13-a mud inlet pipe; 14-a mud distribution pipe; 15-a mud return pipe; 16-overflow weir; 17-a sludge reflux pump; 18-a dosing cassette; 19-an electromagnetic valve; 20-a floating ball water level switch; 21-a stirrer; 22-a first-stage water outlet pipe; 23-secondary water outlet pipe; 24-sloping plates; 25-a spacer plate; 26-bracket.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1-2, the multi-organism synergistic sludge zero-emission integrated treatment device comprises a primary wetland treatment tank 1 and a secondary wetland treatment tank 2, wherein the primary wetland treatment tank 1 is arranged above the secondary wetland treatment tank 2, the horizontal cross-sectional area of the secondary wetland treatment tank 2 is larger than that of the primary wetland treatment tank 1, the middle part of the secondary wetland treatment tank 2 is a hollow zone 8, and a sludge reflux pump 17 is arranged in the hollow zone 8.
The first-stage wetland treatment pool 1 comprises a first-stage plant layer 3 (calamus), a wormcast layer 4 of 15cm, a first-stage ceramsite layer 5 of 20cm and a water collecting layer 6 of 30cm which are sequentially arranged from top to bottom, wherein the calamus and the earthworms 7 are inoculated on a wormcast foundation bed, and the densities of the calamus and the earthworms are respectively 4 (100 plants/m 2 ) And 105 (2520/m) 2 ) The earthworm 7 is Eisenia foetida, wherein, the wormcast layer 4 is detachably connected with the first-level haydite layer 5, and a partition plate 25 is arranged between the wormcast layer 4, the first-level haydite layer 5 and the water collecting layer 6, and through holes are arranged on the partition plate 25. The first-level ceramsite layer 5 is detachably supported above the water collection layer 6 through the support 26, so that the water collection layer 6 is convenient to clean. A mud distribution pipe 14 is arranged above the first-stage plant layer 3, a mud inlet pipe 13 is connected to the mud distribution pipe 14, and residual mud enters the wormcast layer 4 through the mud inlet pipe 13 and flows through holes on the partition plate 25 to reach the water collecting layer 6 through the ceramsite layer 5. The bottom side wall of the water collecting layer 6 is provided with a first-stage water outlet pipe 22, and the bottom of the water collecting layer 6 is provided with an inclined plate 24 which is obliquely arranged, so that sludge flocs in the water collecting layer 6 can be conveniently gathered and collected.
The side wall of the water collecting layer 6 is provided with a medicine adding box 18, and 1 percent of Al is arranged in the medicine adding box 18 2 (SO 4 ) 3 ·18H 2 And O solution, performing coagulating sedimentation on the effluent of the primary wetland treatment tank 1, and refluxing the sedimented sludge flocs to a sludge inlet pipe 13 at the front end of the primary wetland treatment tank 1. The medicine outlet of the medicine adding box 18 is communicated with the water collecting layer 6, the medicine outlet of the medicine adding box 18 is provided with an electromagnetic valve 19, a floating ball water level switch 20 and a stirrer 21 are arranged in the water collecting layer 6, and the floating ball water level switch 20 is respectively connected with the electromagnetic valveThe valve 19 is electrically connected to the start-stop control terminal of the stirrer 21.
The whole body formed by the first-stage plant layer 3, the wormcast layer 4 and the first-stage ceramsite layer 5 in the first-stage wetland treatment tank 1 is divided into a plurality of alternate mud-feeding treatment areas (4 treatment areas in fig. 1-2), so that the filler can be conveniently replaced, and meanwhile, the continuity of mud treatment is ensured.
The secondary wetland treatment pool 2 comprises a secondary plant layer 9 (calamus), a 10cm cobblestone layer 10, a 20cm secondary ceramsite layer 11 and a 15cm medical stone layer 12 which are sequentially arranged from top to bottom, wherein the calamus is planted on the cobblestone layer 10, and the density is 4 plants (100 plants/m 2 ). Wherein, the cobblestone layer 10 and the second-level haydite layer 11 and the medical stone layer 12 are detachably connected, and the cobblestone layer 10, the second-level haydite layer 11 and the medical stone layer 12 are provided with a spacing plate 25, and through holes are distributed on the spacing plate 25. The side wall of the bottom of the medical stone layer 12 is provided with a secondary water outlet pipe 23. The sludge reflux pump 17 is connected with a sludge return pipe 15, a sludge inlet of the sludge return pipe 15 is communicated with the lower end of the inclined plate 24, and a sludge discharge port of the sludge return pipe 15 is connected with the sludge inlet pipe 13.
An overflow weir 16 is arranged above the secondary wetland treatment pond 2, the overflow weir 16 is arranged at the periphery of the water collecting layer 6, the water outlet of the primary water outlet pipe 22 is positioned in the overflow weir 16, and the peripheral edge of the overflow weir 16 is in a zigzag shape.
When the water level in the water collection layer 6 of the primary wetland treatment tank 1 reaches a certain height, the float water level switch 20 is connected with the solenoid valve 19 and the start-stop control end of the stirrer 21, the dosing box 18 starts dosing into the water collection layer 6, and simultaneously the stirrer 21 starts stirring, so that the drug and the water are fully and uniformly mixed by the stirrer 21, and after stirring for 10min, the mixture is kept stand for 20min, and sludge and floccules are accumulated at the bottom of the sloping plate 24 of the water collection layer 6. Then the water outlet valve of the first-stage water outlet pipe 22 is opened, water in the water collecting layer 6 enters the second-stage wetland treatment tank 2 through the overflow weir 16, after a certain amount of water is discharged, the water outlet valve of the first-stage water outlet pipe 22 is closed, the sludge reflux pump 17 is started, and sludge at the bottom of the water collecting layer 6 is refluxed to the sludge inlet pipe 13 of the first-stage wetland treatment tank 1 through the sludge reflux pipe 15. The tail water of the primary wet land treatment tank 1 enters the secondary wet land treatment tank 2, flows through the cobble layer 10, the secondary ceramsite layer 11 and the medical stone layer 12, and is discharged through the secondary water outlet pipe 23 after being treated.
The primary wetland treatment tank 1 mainly comprises foundation bed interception, earthworm ingestion, microbial degradation and sludge organic matter conversion, and realizes sludge reduction. On the one hand, the plant root system and the filler surface entrap and adsorb organic matters, and earthworms swallow and entrap Suspended Solids (SS) adsorbed on the filler, so that the phenomenon of accumulation of the device due to overlarge water inlet load is avoided, the problem of blockage is solved, the operation time is prolonged, and the intermittent time is shortened. Meanwhile, the biological film on the surface of the filter material can keep better biological activity, and has relatively stable treatment capacity on SS. On the other hand, the action of the earthworms can also increase the specific surface area of the sewage and sludge solid particles, improve the structures of the sewage and sludge solid particles and further improve the adsorption capacity of the matrix on organic matters. The oxygen-secreting effect of the plant root system can provide sufficient oxygen for earthworms and microorganisms, and the activity of the earthworms and the microorganisms is increased, so that the degradation of the microorganisms on organic matters is promoted.
The secondary wetland treatment tank 2 of the invention mainly removes pollutants through the synergistic effect of fillers, plants and microorganisms. The filler is a carrier for plant microorganism growth, and organic matters in the sewage are directly removed through physical adsorption, precipitation and filtration. The plant root system secretes oxygen and organic compound to influence the growth and reproduction of microorganism, and can directly absorb nutrient substances such as nitrogen and phosphorus in water body, thereby improving the removal effect of organic matters. The degradation of contaminants in water by microorganisms is accomplished by self-metabolic activity, and is largely classified into aerobic metabolism and anaerobic metabolism by the type of metabolism. The secondary wetland treatment tank 2 aims at denitrification and dephosphorization, the wetland is mainly used for removing nitrogen under the action of microorganisms, and NH in water 4 + N is first oxidized to NO by nitrifying bacteria under aerobic conditions x - Then NO x - Reduction to N by denitrifying bacteria under anoxic conditions 2 。
The whole equipment adopts intermittent mud feeding, the intermittent mud feeding period is 2d, and the mud feeding load is 0.33 kg/(m) 2 D), the mud feeding period and the mud feeding load can be adjusted according to actual conditions. Intermittent mud feeding can effectively prevent the blockage of the filler,the reoxygenation capability of the wetland is enhanced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (8)
1. The multi-biological synergistic sludge zero-emission integrated treatment equipment is characterized by comprising a primary wetland treatment tank and a secondary wetland treatment tank, wherein the cross section area of the secondary wetland treatment tank is larger than that of the primary wetland treatment tank, the primary wetland treatment tank is arranged above the secondary wetland treatment tank, a sludge distribution pipe is arranged above the primary wetland treatment tank, a sludge inlet pipe is connected to the sludge distribution pipe, a primary water outlet pipe is arranged on the bottom side wall of the primary wetland treatment tank, a water outlet of the primary water outlet pipe is positioned above the secondary wetland treatment tank, and a secondary water outlet pipe is arranged on the bottom side wall of the secondary wetland treatment tank; the middle part of the secondary wetland treatment pond is a hollow area, a sludge reflux pump is arranged in the hollow area, a sludge return pipe is connected to the sludge reflux pump, a sludge inlet of the sludge return pipe is communicated with the bottom of the primary wetland treatment pond, and a sludge outlet of the sludge return pipe is connected to the sludge inlet pipe;
the first-stage wetland treatment pool comprises a first-stage plant layer, a wormcast layer, a first-stage ceramsite layer and a water collecting layer which are sequentially arranged from top to bottom, earthworms are inoculated in the wormcast layer, a dosing box is arranged on the side wall of the water collecting layer, and a drug outlet of the dosing box is communicated with the water collecting layer; the secondary wetland treatment pool comprises a secondary plant layer, a cobble layer, a secondary haydite layer and a medical stone layer which are sequentially arranged from top to bottom;
the overflow weir is arranged above the secondary wetland treatment pool and is arranged at the periphery of the water collecting layer, the water outlet of the primary water outlet pipe is positioned in the overflow weir, and the peripheral edge of the overflow weir is in a zigzag shape.
2. The multi-bio-cooperative sludge zero-emission integrated treatment device according to claim 1, wherein the whole body formed by the first-stage plant layer, the wormcast layer and the first-stage ceramsite layer in the first-stage wetland treatment tank is divided into a plurality of alternate sludge inlet treatment areas.
3. The multi-organism cooperative sludge zero-emission integrated treatment device according to claim 1, wherein the medicine outlet of the medicine adding box is provided with an electromagnetic valve, and a floating ball water level switch is arranged in the water collecting layer and is electrically connected with the electromagnetic valve.
4. The multi-organism cooperative sludge zero-discharge integrated treatment device according to claim 3, wherein a stirrer is arranged in the water collecting layer, and a start-stop control end of the stirrer is electrically connected with the floating ball water level switch.
5. The multi-organism cooperative sludge zero-emission integrated treatment device as claimed in claim 3, wherein 1% Al is arranged in the dosing box 2 (SO 4 ) 3 ·18H 2 O solution.
6. The multi-organism cooperative sludge zero-discharge integrated treatment device according to claim 4, wherein the bottom of the water collecting layer is an inclined plate which is obliquely arranged, and the sludge inlet of the sludge return pipe is positioned at the lower end of the inclined plate.
7. The multi-bio-cooperative sludge zero-emission integrated treatment device according to claim 1, wherein partition plates are arranged between the wormcast layer and the first-stage ceramsite layer, between the first-stage ceramsite layer and the water collecting layer, between the cobblestone layer and the second-stage ceramsite layer and between the second-stage ceramsite layer and the medical stone layer, and through holes are arranged on the partition plates.
8. The multi-bio-cooperative sludge zero-emission integrated treatment device according to claim 1, wherein the wormcast layer and the first-stage haydite layer, the cobblestone layer and the second-stage haydite layer and the medical stone layer are all detachably connected, and the first-stage haydite layer is detachably supported above the water collecting layer through a bracket.
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| CN211770876U (en) * | 2020-02-14 | 2020-10-27 | 兰州交通大学 | Assembled multi-organism collaborative desliming device |
| CN113860678A (en) * | 2021-09-08 | 2021-12-31 | 兰州铁道设计院有限公司 | Integrated equipment and method for multi-module rapid treatment of oily sludge |
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- 2022-01-19 CN CN202210062759.7A patent/CN114426387B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20010009134A (en) * | 1999-07-07 | 2001-02-05 | 안명환 | An Apparatus for Treating Waste Water using Effective Microbe in Soil |
| CN101704613A (en) * | 2009-11-19 | 2010-05-12 | 河北农业大学 | Rural sewage ecological purification recycling device |
| CN211770876U (en) * | 2020-02-14 | 2020-10-27 | 兰州交通大学 | Assembled multi-organism collaborative desliming device |
| CN113860678A (en) * | 2021-09-08 | 2021-12-31 | 兰州铁道设计院有限公司 | Integrated equipment and method for multi-module rapid treatment of oily sludge |
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