CN109133514B - Groundwater pollution treatment device - Google Patents
Groundwater pollution treatment device Download PDFInfo
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- CN109133514B CN109133514B CN201811065971.9A CN201811065971A CN109133514B CN 109133514 B CN109133514 B CN 109133514B CN 201811065971 A CN201811065971 A CN 201811065971A CN 109133514 B CN109133514 B CN 109133514B
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- 238000003895 groundwater pollution Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000005842 biochemical reaction Methods 0.000 claims abstract description 66
- 239000007788 liquid Substances 0.000 claims abstract description 53
- 238000001179 sorption measurement Methods 0.000 claims abstract description 40
- 229910052902 vermiculite Inorganic materials 0.000 claims abstract description 17
- 235000019354 vermiculite Nutrition 0.000 claims abstract description 17
- 239000010455 vermiculite Substances 0.000 claims abstract description 17
- 241000894006 Bacteria Species 0.000 claims abstract description 16
- 238000009826 distribution Methods 0.000 claims abstract description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000003911 water pollution Methods 0.000 claims abstract description 7
- 238000005273 aeration Methods 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 229920001661 Chitosan Polymers 0.000 claims description 9
- 241000588747 Klebsiella pneumoniae Species 0.000 claims description 9
- 241000589516 Pseudomonas Species 0.000 claims description 8
- 239000010802 sludge Substances 0.000 claims description 8
- 239000000243 solution Substances 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 6
- 238000010304 firing Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- 241000218033 Hibiscus Species 0.000 claims description 5
- 235000005206 Hibiscus Nutrition 0.000 claims description 5
- 235000007185 Hibiscus lunariifolius Nutrition 0.000 claims description 5
- 230000001580 bacterial effect Effects 0.000 claims description 4
- 239000000945 filler Substances 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 9
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 239000003673 groundwater Substances 0.000 description 8
- 244000005700 microbiome Species 0.000 description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 6
- 229910052698 phosphorus Inorganic materials 0.000 description 6
- 239000011574 phosphorus Substances 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 239000000149 chemical water pollutant Substances 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 229920000388 Polyphosphate Polymers 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
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- 238000001764 infiltration Methods 0.000 description 2
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- 239000000203 mixture Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000001205 polyphosphate Substances 0.000 description 2
- 235000011176 polyphosphates Nutrition 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000233866 Fungi Species 0.000 description 1
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- 241000218681 Pseudolarix Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
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- 230000001546 nitrifying effect Effects 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
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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
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Water Treatment By Sorption (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses an underground water pollution treatment device which comprises a filter tank, a biochemical reaction tank, an adsorption tower, a pipeline mixer and a bacteria liquid tank, wherein a first filter screen is arranged in the filter tank; the biochemical reaction tank is provided with a first guide plate, a second guide plate, a third guide plate and a fourth guide plate, and the biochemical reaction tank is divided into an aerobic zone, a facultative zone and an anaerobic zone by the four guide plates in sequence; a second filter screen is arranged between the first guide plate and the second guide plate, a third filter screen is arranged between the third guide plate and the fourth guide plate, and the second filter screen and the third filter screen seal two ends of the facultative area; a liquid distribution pipe is arranged in the adsorption tower, and a modified vermiculite adsorption layer and an active carbon adsorption layer are sequentially arranged below the liquid distribution pipe; a liquid inlet pipe is arranged above the pipeline mixer, and the liquid inlet end of the liquid inlet pipe is positioned in the bacteria liquid pool. The invention has reasonable design, convenient use and high operation efficiency, achieves better treatment effect through various treatment devices, and finally ensures that all indexes of the treated underground water can meet the quality requirement of the underground water.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an underground water pollution treatment device.
Background
Along with the rapid development of cities, the quantity of stored garbage is more and more, the quantity of garbage landfills is more and more, and the production quantity of leachate of the garbage landfills is more and more. The leachate is a product of gravity flow of liquid in the landfill, mainly comes from rainfall and the internal water content of the garbage, and most of the existing landfill sites do not do strict seepage-proofing work, so that the leachate enters underground water to pollute the underground water. The landfill leachate is high-concentration organic wastewater with complex components, mainly contains high-concentration organic matters, ammonia nitrogen and heavy metal ions with certain concentration, and can cause serious environmental pollution if directly discharged into the environment without treatment. In addition, in landfills, the inevitable occurrence of landfill leachate contaminating groundwater and, over time, these problems are exacerbated, making less groundwater available for direct human use less.
The existing treatment methods for treating underground water polluted by landfill leachate mainly comprise isolation treatment, chemical treatment, vacuum extraction and the like, the treatment methods are complex in structure and difficult to achieve ideal treatment effects, and after treatment is finished, underground water needs to be further purified to meet the standard of drinking water. Therefore, it is necessary to develop a new groundwater pollution treatment apparatus to solve the above drawbacks.
Disclosure of Invention
The invention provides an underground water pollution treatment device, which solves the problems that the problem that landfill leachate pollutes underground water in the prior art is continuously aggravated, the existing treatment method has a complex structure, and the treatment effect is not ideal.
The invention provides an underground water pollution treatment device which comprises a water inlet pipe, a filter tank, a biochemical reaction tank, an adsorption tower, a pipeline mixer and a bacteria liquid tank, wherein the water inlet end of the water inlet pipe is communicated with an extraction well, the water outlet end of the water inlet pipe is communicated with the filter tank, the water inlet pipe is also provided with a first lift pump, a first filter screen is longitudinally arranged in the filter tank, and one side of the filter tank, which is opposite to the water inlet pipe, is provided with a first water outlet pipe;
the biochemical reaction tank is communicated with the filtering tank through the first water outlet pipe, first guide plates, second guide plates, third guide plates and fourth guide plates are sequentially and longitudinally arranged in the biochemical reaction tank at intervals in a staggered manner along the water flow direction, the bottom ends of the first guide plates and the third guide plates are fixedly connected with the bottom plate of the biochemical reaction tank, the two sides of the first guide plates and the bottom ends of the third guide plates are fixedly connected with the inner side wall of the biochemical reaction tank, and a distance is reserved between the top ends of the first guide plates and the top plate of the biochemical reaction tank; the top ends of the second guide plate and the fourth guide plate are fixedly connected with the top plate of the biochemical reaction tank, the bottom end of the second guide plate is spaced from the bottom plate of the biochemical reaction tank, and the two sides of the second guide plate are fixedly connected with the inner side wall of the biochemical reaction tank;
the first guide plate, the second guide plate, the third guide plate and the fourth guide plate divide the biochemical reaction tank into an aerobic zone between the front side plate of the biochemical reaction tank and the first guide plate, a facultative zone between the first guide plate and the fourth guide plate and an anaerobic zone between the fourth guide plate and the rear side plate of the biochemical reaction tank;
aerobic activated sludge is filled in the aerobic zone, an aeration pipe is longitudinally arranged in the aerobic zone, and the air inlet end of the aeration pipe penetrates through the biochemical reaction tank and is connected with an air pump; a second filter screen is transversely arranged between the first guide plate and the second guide plate, a third filter screen is transversely arranged between the third guide plate and the fourth guide plate, the second filter screen and the third filter screen seal two ends of the facultative anaerobic zone, and a biomembrane filler is filled in the facultative anaerobic zone; anaerobic activated sludge is filled in the anaerobic zone, and a second water outlet pipe is also arranged at the upper end of the side wall of the anaerobic zone in the biochemical reaction tank;
the adsorption tower is communicated with the biochemical reaction tank through the second water outlet pipe, a liquid distribution pipe is arranged at the upper end in the adsorption tower and is communicated with the second water outlet pipe, a modified vermiculite adsorption layer and an activated carbon adsorption layer are sequentially arranged below the liquid distribution pipe in the adsorption tower, a third water outlet pipe is further arranged below one side of the adsorption tower, a branch pipe is further arranged on the third water outlet pipe, a second lifting pump and a valve are arranged on the branch pipe, and the liquid outlet end of the branch pipe is located in the aerobic zone;
the pipeline mixer is communicated with the adsorption tower through the third water outlet pipe, a liquid inlet is formed above the pipeline mixer, a fourth water outlet pipe is formed in one side of the pipeline mixer, and the fourth water outlet pipe is communicated with a permeation channel; a liquid inlet pipe is communicated with the liquid inlet, a third lifting pump is arranged on the liquid inlet pipe, and the liquid inlet end of the liquid inlet pipe is positioned in the bacterial liquid pool; the bacterium liquid pool contains Klebsiella pneumoniae and Pseudomonas hibiscus.
Preferably, a plurality of air holes are formed in the top plate of the biochemical reaction tank.
Preferably, the aeration pipe is provided with a plurality of aeration holes.
Preferably, one end of the second water outlet pipe, which is positioned in the biochemical reaction tank, is provided with a fourth filter screen.
Preferably, the preparation method of the modified vermiculite comprises the following steps:
mixing chitosan and 5% volume fraction acetic acid aqueous solution according to the weight ratio of 1: 20, mixing and dissolving to obtain a chitosan solution;
mixing vermiculite and iron powder according to the weight ratio of 15: 1, grinding into powder with the mesh number of 20 meshes, adding the chitosan solution into the powder, and blending into uniform paste to obtain paste; drying the paste until the water content is less than or equal to 5%, then placing the paste in a muffle furnace, firing the paste at 500 ℃ for 3h, cooling the paste to room temperature after firing, and then granulating the paste into particles with the particle size of 1-3cm to obtain the modified vermiculite.
Preferably, the effective viable count of the Klebsiella pneumoniae and the Pseudomonas syriacus in the bacterial liquid pool is 104More than one/mL.
Compared with the prior art, the invention has the beneficial effects that:
firstly, extracting polluted underground water, degrading organic matters in the polluted underground water by using a biochemical treatment tank, and removing high-concentration ammonia nitrogen and phosphorus so as to treat pollutants in the wastewater to a great extent, and performing two-stage adsorption on the effluent of the biochemical treatment tank by using an adsorption tower to remove heavy metal ions, residual organic matters, nitrogen, phosphorus and SS in a polluted water body so as to further purify the water; part of the purified water is reused in the biochemical treatment tank to reduce the load, and most of the purified water is backfilled with underground water;
meanwhile, the denitrification microorganisms are added into the effluent of the adsorption tower through the pipeline mixer, so that nitrogen in the polluted water body is removed, and the microorganisms can also enter groundwater along with backfilled water to treat the groundwater.
The invention has reasonable design, convenient use, high operation efficiency and high reliability, achieves better treatment effect through various treatment devices, and finally ensures that various indexes of the treated underground water can meet the quality requirement of the underground water.
Drawings
FIG. 1 is a process flow diagram of the groundwater pollution treatment apparatus of the present invention.
Description of reference numerals:
1-a water inlet pipe, 2-a first lift pump, 3-a first filter screen, 4-a first water outlet pipe, 5-a first guide plate, 6-a second guide plate, 7-a third guide plate, 8-a fourth guide plate, 9-an aeration pipe, 10-an air pump, 11-a second filter screen, 12-a third filter screen, 13-a second water outlet pipe, 14-a liquid distribution pipe, 15-a modified vermiculite adsorption layer, 16-an activated carbon adsorption layer, 17-a third water outlet pipe, 18-a branch pipe, 19-a second lift pump, 20-a valve, 21-a fourth water outlet pipe, 22-a liquid inlet pipe, 23-a third lift pump and 24-a fourth filter screen.
Detailed Description
In order to make the technical solutions of the present invention better understood and implemented by those skilled in the art, the present invention is further described below with reference to the following specific embodiments and the accompanying drawings, but the embodiments are not meant to limit the present invention.
The Klebsiella pneumoniae and the Pseudomonas syriacus used in the following examples are all the existing strains which can be purchased in the microorganism strain preservation management center, do not relate to the development of new strains, and only relate to the application of the existing strains. In addition, the Klebsiella pneumoniae used in the invention is a strain with the preservation number of China center for type culture Collection of CCTCC NO. M2012239; the pseudolarix hibiscus is a strain with the preservation number of China center for type culture Collection being CCTCC NO. M2014244.
The devices and experimental methods described in the following examples are conventional devices and methods unless otherwise specified; the materials are commercially available, unless otherwise specified.
The utility model provides an underground water pollution treatment device, specifically as shown in figure 1, including inlet tube 1, filtering ponds, biochemical reaction pond, adsorption tower, line mixer, fungus liquid pond, the end intercommunication of intaking of inlet tube 1 has the extraction well, and the end intercommunication of play water has the filtering ponds, still is equipped with first elevator pump 2 on the inlet tube 1, and the during operation, gets a mouthful extraction well in the region that groundwater receives landfill leachate pollution, and inlet tube 1 stretches into in the extraction well, will extract the groundwater of pollution in the well and take out to mention in the filtering ponds through first elevator pump 2 and handle.
Vertically be equipped with first filter screen 3 in the filtering ponds, first filter screen 3 can hold back the solid impurity who pollutes the groundwater, makes follow-up biochemical reaction go on smoothly.
A first water outlet pipe 4 is arranged on one side of the filtering tank opposite to the water inlet pipe 1, the biochemical reaction tank is communicated with the filtering tank through the first water outlet pipe 4, a first guide plate 5, a second guide plate 6, a third guide plate 7 and a fourth guide plate 8 are sequentially and longitudinally arranged in the biochemical reaction tank along the water flow direction in a staggered manner, the bottom ends of the first guide plate 5 and the third guide plate 7 are fixedly connected with the bottom plate of the biochemical reaction tank, the two sides of the first guide plate 5 and the third guide plate 7 are fixedly connected with the inner side wall of the biochemical reaction tank, and a distance is reserved between the top end of; the top ends of the second guide plate 6 and the fourth guide plate 8 are fixedly connected with the top plate of the biochemical reaction tank, the bottom end of the second guide plate is spaced from the bottom plate of the biochemical reaction tank, and the two sides of the second guide plate are fixedly connected with the inner side wall of the biochemical reaction tank;
the biochemical reaction tank is divided into an aerobic zone between the front side plate of the biochemical reaction tank and the first guide plate 5, a facultative zone between the first guide plate 5 and the fourth guide plate 8 and an anaerobic zone between the fourth guide plate 8 and the rear side plate of the biochemical reaction tank by the first guide plate 5, the second guide plate 6, the third guide plate 7 and the fourth guide plate 8. The invention strictly divides the biochemical reaction tank, and aims to smoothly and efficiently carry out the denitrification and dephosphorization reaction.
The aerobic zone is filled with aerobic activated sludge, the facultative zone is filled with biofilm filler, and the anaerobic zone is filled with anaerobic activated sludge, so that the reaction process of the biochemical reaction tank in the invention is equivalent to an OAA treatment process flow, and the specific principle is as follows: the polluted underground water filtered by the filtering tank enters an aerobic zone from the lower part of the biochemical reaction tank in an upflow mode, organic matters are degraded in the aerobic zone, ammonia nitrogen is converted into nitrate nitrogen and nitrite nitrogen under the action of nitrifying bacteria and nitrite bacteria, and phosphorus accumulating bacteria take a large amount of dissolved orthophosphate from the wastewater to complete the phosphorus accumulating process; then the mixture enters the facultative zone upwards, organic matters are further degraded in the facultative zone, and nitrate nitrogen and nitrite nitrogen from the aerobic zone are converted into nitrogen under the action of denitrifying bacteria in the facultative zone; the mixture in the facultative zone enters an anaerobic zone again, complex organic matters in the anaerobic zone are degraded into simple and stable compounds, nitrate nitrogen and nitrite nitrogen which are not subjected to denitrification are completely converted into nitrogen in the anaerobic zone, and the polyphosphate in cells is released by the polyphosphate bacteria, so that the degradation of the organic matters and the processes of nitrogen and phosphorus removal are completed.
The top plate of the biochemical reaction tank is provided with a plurality of air holes, because a large amount of methane can be generated in the anaerobic reaction process, the top plate of the biochemical reaction tank is provided with a plurality of air holes, the methane can escape from the biochemical reaction tank.
The aerobic zone is internally and longitudinally provided with an aeration pipe 9, the aeration pipe 9 is provided with a plurality of aeration holes, the air inlet end of the aeration pipe 9 passes through the biochemical reaction tank and is connected with an air pump 10, and the aeration pipe 9 can provide enough oxygen for the aerobic zone.
Transversely be equipped with second filter screen 11 between first guide plate 5 and the second guide plate 6, transversely be equipped with third filter screen 12 between third guide plate 7 and the fourth guide plate 8, second filter screen 11 seals the both ends in facultative anaerobic district with third filter screen 12 to make the biomembrane filler in facultative anaerobic district fix in the facultative anaerobic district, can not run off aerobic district and anaerobic district, thereby influence treatment effect each other.
It should be noted that, the first guide plate 5, the second guide plate 6, the third guide plate 7 and the fourth guide plate 8 have the same structure, wherein, the distance from the top end of the first guide plate 5 and the third guide plate 7 to the top end of the biochemical reaction tank is 1/5 of the biochemical reaction tank height, the distance from the bottom end of the second guide plate 6 and the fourth guide plate 8 to the bottom plate of the biochemical reaction tank is 1/5 of the biochemical reaction tank height, on the one hand, the biochemical reaction tank can be partitioned by setting up 4 guide plates, on the other hand, a buffer area can be formed in the area between the guide plates, so that the retention time of the wastewater in the facultative oxygen area is longer, and the denitrification treatment effect is better.
The upper end of the biochemical reaction tank, which is positioned on the side wall of the anaerobic zone, is also provided with a second water outlet pipe 13, one end of the second water outlet pipe 13, which is positioned in the biochemical reaction tank, is provided with a fourth filter screen 24, and the fourth filter screen 24 is used for intercepting sludge in the anaerobic zone and preventing the sludge from entering a subsequent adsorption tower.
The adsorption tower is communicated with the biochemical reaction tank through a second water outlet pipe 13, a liquid distribution pipe 14 is arranged at the upper end in the adsorption tower, the liquid distribution pipe 14 is communicated with the second water outlet pipe 13, and the liquid distribution pipe 14 can uniformly distribute the effluent in the biochemical reaction tank into the adsorption tower; the below department that lies in liquid distribution pipe 14 in the adsorption tower is equipped with modified vermiculite adsorbed layer 15 and active carbon adsorption layer 16 in proper order, and vermiculite in the modified vermiculite adsorbed layer 15 is after the modification, and the active site in the vermiculite space is more, and is stronger to the combination effect of the heavy metal ion in the waste water, and adsorption effect is better, and active carbon adsorption layer 16 can absorb micro-nitrogen phosphorus and colloidal substance in the waste water, makes quality of water cleaner.
The preparation method of the modified vermiculite comprises the following steps:
mixing chitosan and 5% volume fraction acetic acid aqueous solution according to the weight ratio of 1: 20, mixing and dissolving to obtain a chitosan solution;
mixing vermiculite and iron powder according to the weight ratio of 15: 1, grinding into powder with the mesh number of 20 meshes, adding the chitosan solution into the powder, and blending into uniform paste to obtain paste; drying the paste until the water content is less than or equal to 5%, then placing the paste in a muffle furnace, firing the paste at 500 ℃ for 3h, cooling the paste to room temperature after firing, and then granulating the paste into particles with the particle size of 1-3cm to obtain the modified vermiculite.
A third water outlet pipe 17 is further arranged below one side of the adsorption tower, a branch pipe 18 is further arranged on the third water outlet pipe 17, a second lift pump 19 and a valve 20 are arranged on the branch pipe 18, and the liquid outlet end of the branch pipe 18 is positioned in the anaerobic tank 7; the water quality of the effluent of the adsorption tower is greatly purified, so that when the concentration of pollutants in groundwater is higher, the microorganisms in the biochemical reaction tank can be impacted, and the microorganisms cannot work normally or even die, therefore, the effluent of the adsorption tower is transferred into the anaerobic tank 7 in a part to dilute the water quality, and the impact effect of the pollutants on the microorganisms is reduced.
Pipeline mixerThe mixer is communicated with the adsorption tower through a third water outlet pipe 17, a liquid inlet is formed above the pipeline mixer, a fourth water outlet pipe 21 is formed in one side of the pipeline mixer, and the fourth water outlet pipe 21 is communicated with a permeation channel; a liquid inlet pipe 22 is communicated with the liquid inlet, a third lifting pump 23 is arranged on the liquid inlet pipe 22, and the liquid inlet end of the liquid inlet pipe 22 is positioned in the bacterial liquid pool; the bacteria liquid pool contains Klebsiella pneumoniae and Pseudomonas hibisci, and the effective viable count of the Klebsiella pneumoniae and the Pseudomonas hibisci is 104More than one/mL.
When the concentration of ammonia nitrogen in the polluted underground water is too high, the concentration of ammonia nitrogen in the effluent of the adsorption tower can not be reduced to be below the water quality standard, therefore, the invention is provided with the bacteria liquid pool, and denitrification microorganisms of Klebsiella pneumoniae and Pseudomonas hibiscus are arranged in the bacteria liquid pool, and are introduced into the pipeline mixer to be mixed with the effluent of the adsorption tower for further denitrification, and the microorganisms after denitrification can enter the infiltration channel along with the fourth water outlet pipe 21 and then enter the underground water to remove the ammonia nitrogen in the polluted water body in the underground water.
The invention is a continuous operation process, the first lifting pump 2 continuously pumps out the polluted underground water and treats the polluted underground water in the device of the invention, the treated water enters the underground water through the infiltration channel to dilute the underground water, the diluted polluted underground water is continuously circulated and pumped out for treatment until all indexes in the pumped-out underground water meet the quality standard of the underground water, and then the treatment of the underground water is completed.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, it is intended that such changes and modifications be included within the scope of the appended claims and their equivalents.
Claims (5)
1. The underground water pollution treatment device is characterized by comprising a water inlet pipe (1), a filtering tank, a biochemical reaction tank, an adsorption tower, a pipeline mixer and a bacteria liquid tank, wherein a water inlet end of the water inlet pipe (1) is communicated with an extraction well, a water outlet end of the water inlet pipe is communicated with the filtering tank, a first lifting pump (2) is further arranged on the water inlet pipe (1), a first filter screen (3) is longitudinally arranged in the filtering tank, and a first water outlet pipe (4) is arranged on one side, opposite to the water inlet pipe (1), of the filtering tank;
the biochemical reaction tank is communicated with the filter tank through the first water outlet pipe (4), first guide plates (5), second guide plates (6), third guide plates (7) and fourth guide plates (8) are sequentially and longitudinally arranged in the biochemical reaction tank at intervals in a staggered manner along the water flow direction, the bottom ends of the first guide plates (5) and the third guide plates (7) are fixedly connected with the bottom plate of the biochemical reaction tank, the two sides of the first guide plates are fixedly connected with the inner side wall of the biochemical reaction tank, and a distance is reserved between the top end of each first guide plate and the top plate of the biochemical reaction tank; the top ends of the second guide plate (6) and the fourth guide plate (8) are fixedly connected with the top plate of the biochemical reaction tank, the bottom end of the second guide plate is spaced from the bottom plate of the biochemical reaction tank, and the two sides of the second guide plate are fixedly connected with the inner side wall of the biochemical reaction tank;
the first guide plate (5), the second guide plate (6), the third guide plate (7) and the fourth guide plate (8) divide the biochemical reaction tank into an aerobic zone between the front side plate of the biochemical reaction tank and the first guide plate (5), a facultative zone between the first guide plate (5) and the fourth guide plate (8) and an anaerobic zone between the fourth guide plate (8) and the rear side plate of the biochemical reaction tank;
aerobic activated sludge is filled in the aerobic zone, an aeration pipe (9) is longitudinally arranged in the aerobic zone, and the air inlet end of the aeration pipe (9) penetrates through the biochemical reaction tank and is connected with an air pump (10); a second filter screen (11) is transversely arranged between the first guide plate (5) and the second guide plate (6), a third filter screen (12) is transversely arranged between the third guide plate (7) and the fourth guide plate (8), the second filter screen (11) and the third filter screen (12) seal two ends of the facultative anaerobic zone, and a biomembrane filler is filled in the facultative anaerobic zone; anaerobic activated sludge is filled in the anaerobic zone, and a second water outlet pipe (13) is also arranged at the upper end of the side wall of the anaerobic zone in the biochemical reaction tank;
the adsorption tower is communicated with the biochemical reaction tank through the second water outlet pipe (13), a liquid distribution pipe (14) is arranged at the upper end in the adsorption tower, the liquid distribution pipe (14) is communicated with the second water outlet pipe (13), a modified vermiculite adsorption layer (15) and an activated carbon adsorption layer (16) are sequentially arranged in the adsorption tower below the liquid distribution pipe (14), a third water outlet pipe (17) is further arranged below one side of the adsorption tower, a branch pipe (18) is further arranged on the third water outlet pipe (17), a second lifting pump (19) and a valve (20) are arranged on the branch pipe (18), and the liquid outlet end of the branch pipe (18) is located in the aerobic zone;
the pipeline mixer is communicated with the adsorption tower through the third water outlet pipe (17), a liquid inlet is formed above the pipeline mixer, a fourth water outlet pipe (21) is formed in one side of the pipeline mixer, and the fourth water outlet pipe (21) is communicated with a permeation channel; a liquid inlet pipe (22) is communicated with the liquid inlet, a third lifting pump (23) is arranged on the liquid inlet pipe (22), and the liquid inlet end of the liquid inlet pipe (22) is positioned in the bacterial liquid pool; the bacterium liquid pool contains Klebsiella pneumoniae and Pseudomonas hibiscus;
the preparation method of the vermiculite comprises the following steps:
mixing chitosan and 5% volume fraction acetic acid aqueous solution according to the weight ratio of 1: 20, mixing and dissolving to obtain a chitosan solution;
mixing vermiculite and iron powder according to the weight ratio of 15: 1, grinding into powder with the mesh number of 20 meshes, adding the chitosan solution into the powder, and blending into uniform paste to obtain paste; drying the paste until the water content is less than or equal to 5%, then placing the paste in a muffle furnace, firing for 3h at 500 ℃, cooling to room temperature after firing, and then granulating into particles with the particle size of 1-3cm to obtain the modified vermiculite.
2. A groundwater pollution treatment device as claimed in claim 1, wherein a plurality of ventilation holes are formed on a top plate of the biochemical reaction tank.
3. A groundwater pollution treatment apparatus as claimed in claim 1, wherein the aeration pipe (9) is provided with a plurality of aeration holes.
4. A groundwater pollution treatment device as claimed in claim 1, wherein the second outlet pipe (13) is provided with a fourth filter screen (24) at one end of the biochemical reaction tank.
5. The underground water pollution treatment device according to claim 1, wherein the number of the effective viable bacteria of the Klebsiella pneumoniae and the Pseudomonas hibiscus in the bacteria liquid pool is 104More than one/mL.
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| CN201811065971.9A CN109133514B (en) | 2018-09-13 | 2018-09-13 | Groundwater pollution treatment device |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560039A (en) * | 2009-05-22 | 2009-10-21 | 上海同济建设科技有限公司 | Landfill leachate wastewater treatment system and process thereof |
| CN207391215U (en) * | 2017-10-10 | 2018-05-22 | 广州博芳环保科技股份有限公司 | A kind of microkinetic integrated sewage treating apparatus |
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| US9610561B2 (en) * | 2014-08-11 | 2017-04-04 | Corning Incorporated | Method of making a honeycomb having channels containing a porous adsorbent |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101560039A (en) * | 2009-05-22 | 2009-10-21 | 上海同济建设科技有限公司 | Landfill leachate wastewater treatment system and process thereof |
| CN207391215U (en) * | 2017-10-10 | 2018-05-22 | 广州博芳环保科技股份有限公司 | A kind of microkinetic integrated sewage treating apparatus |
Non-Patent Citations (2)
| Title |
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| OAA-SBR新型脱氮工艺处理村镇低C/N比污水的试验研究;叶丽红;《中国优秀硕士学位论文全文数据库 工程1辑》;20150515(第5期);第30-35页 * |
| 蛭石负载壳聚糖处理含铜废液中Cu2+的研究;石慧等;《非金属矿》;20120131;第35卷(第1期);第58页 * |
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