CN110467264B - Enhanced gas stripping denitrification circulating sewage treatment equipment - Google Patents
Enhanced gas stripping denitrification circulating sewage treatment equipment Download PDFInfo
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- CN110467264B CN110467264B CN201910821411.XA CN201910821411A CN110467264B CN 110467264 B CN110467264 B CN 110467264B CN 201910821411 A CN201910821411 A CN 201910821411A CN 110467264 B CN110467264 B CN 110467264B
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- 239000010865 sewage Substances 0.000 title claims abstract description 73
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000002154 agricultural waste Substances 0.000 claims abstract description 65
- 239000010802 sludge Substances 0.000 claims abstract description 62
- 238000001471 micro-filtration Methods 0.000 claims abstract description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 42
- 238000005273 aeration Methods 0.000 claims abstract description 37
- 238000010992 reflux Methods 0.000 claims abstract description 32
- 238000011049 filling Methods 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 7
- 238000010168 coupling process Methods 0.000 claims abstract description 7
- 238000005859 coupling reaction Methods 0.000 claims abstract description 7
- 238000009423 ventilation Methods 0.000 claims description 30
- 238000007599 discharging Methods 0.000 claims description 25
- 239000007789 gas Substances 0.000 claims description 19
- 239000002131 composite material Substances 0.000 claims description 16
- 238000007664 blowing Methods 0.000 claims description 15
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 9
- 239000001301 oxygen Substances 0.000 claims description 9
- 229910052760 oxygen Inorganic materials 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 5
- 239000010902 straw Substances 0.000 claims description 5
- 240000008042 Zea mays Species 0.000 claims description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 4
- 235000005822 corn Nutrition 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 3
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- 239000000203 mixture Substances 0.000 claims description 2
- 230000000249 desinfective effect Effects 0.000 claims 1
- 230000001590 oxidative effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 15
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- 244000005700 microbiome Species 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 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 4
- 238000004378 air conditioning Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 3
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- 231100000719 pollutant Toxicity 0.000 description 3
- UDWXLZLRRVQONG-UHFFFAOYSA-M sodium hexanoate Chemical compound [Na+].CCCCCC([O-])=O UDWXLZLRRVQONG-UHFFFAOYSA-M 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000001546 nitrifying effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000000153 supplemental effect Effects 0.000 description 2
- 229920002488 Hemicellulose Polymers 0.000 description 1
- 241001453382 Nitrosomonadales Species 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000003306 harvesting Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 239000005416 organic matter Substances 0.000 description 1
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Classifications
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/06—Nutrients for stimulating the growth of microorganisms
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- Life Sciences & Earth Sciences (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (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)
Abstract
The invention discloses a reinforced gas stripping denitrification circulating sewage treatment device, which belongs to the field of gas stripping circulating sewage treatment devices, and comprises a water inlet pipeline, an anaerobic chamber, an anoxic chamber, an aerobic chamber, a rear anaerobic chamber, a rear anoxic chamber, a rear aerobic chamber, a gas stripping circulating reflux device, an aeration device and an inclined pipe sludge discharge device, and is characterized in that: also comprises an agricultural waste filling device and a microfiltration device. The invention can solve the problem that the slow-release carbon source of the agricultural waste is difficult to match with the carbon source needed by denitrification in sewage treatment, realizes the optimized coupling matching of sewage treatment equipment and the slow-release carbon source of the agricultural waste, has no external circulating pump, has low operation cost and small occupied area, and is suitable for wide application in sewage treatment.
Description
Technical Field
The invention relates to the field of air-lift type circulating sewage treatment equipment, and in particular belongs to reinforced air-lift denitrification circulating sewage treatment equipment.
Background
The air-lift circulating sewage treatment equipment is characterized in that in a multistage anaerobic-anoxic-aerobic integrated sewage biological treatment reactor, sewage and air enter an air-lift pipe from the bottom of an aerobic zone, the lifted air-water mixed liquid is subjected to strong stirring contact and rises to the top, and flows back to the anoxic zone through a return pipe to form fluid circulation, so that various mass transfer transportation is realized, and the degradation of organic matters is completed. The air stripping type circulating sewage treatment equipment has the advantages of no external circulating pump, low operation cost, low maintenance cost and small occupied area, and can be applied to the field of sewage treatment.
The treatment mechanism of the air-lift type circulating sewage treatment equipment is to realize the efficient treatment of sewage by utilizing the physical adsorption and biochemical pollutant degradation effects of microorganisms. The treatment of nitrogen-containing organic matters by common air-stripping type circulating sewage treatment equipment is mainly realized by ammonia oxidation, nitrification and denitrification and adsorption degradation of a biological film on pollutant matrixes. Wherein the microorganism acts to remove nitrogen-containing organics. In an aerobic environment, ammonia oxidizing bacteria convert organic nitrogen into ammonia nitrogen through ammoniation, and nitrosating bacteria and nitrifying bacteria oxidize ammonia nitrogen into nitrate nitrogen step by step through nitrifying. In an anoxic environment, denitrifying bacteria gradually reduce nitrate nitrogen into nitrogen by taking nitrate nitrogen as an electron acceptor and an organic carbon source as an electron donor, thereby removing nitrogen-containing pollutants. The air stripping circulation adopts the aeration air pipe and the air stripping circulation air pipe to be connected in parallel, and the air quantity is provided by the blower device, so that on one hand, the requirements of microorganism nitrification and organic matter decomposition in the aerobic reaction zone are met, and on the other hand, sewage is returned to the anoxic zone through the air stripping circulation pipe, and denitrification is completed in the anoxic zone, so that the final denitrification is achieved, and the process reduces the equipment required by the traditional pump circulation reflux and simultaneously ensures the denitrification effect of the equipment.
However, domestic sewage treatment equipment generally has the problems of insufficient carbon source and lower carbon nitrogen ratio, which directly leads to the effluent of the sewage treatment equipment and presents the problems of high nitrification of nitrogen element and overhigh nitrate nitrogen in the effluent caused by insufficient carbon element. Especially in the common air stripping type circulating sewage treatment equipment, the available carbon source part in the water after air stripping circulating treatment is seriously insufficient. Meanwhile, in the common air-lift type circulating sewage treatment equipment, the reflux liquid of the aerobic zone carrying high-concentration dissolved oxygen can damage the anoxic environment of the anoxic zone, thereby further affecting the biological denitrification effect of the anoxic zone. In order to solve these problems, in practical operation of a common stripping type circulating sewage treatment apparatus, it is common to add carbon sources (such as methanol, ethanol, sodium caproate, glucose, etc.) to an anoxic zone to promote denitrification and reduce the concentration of dissolved oxygen in the anoxic zone. Although the mode of adding the carbon source can improve the denitrification effect of sewage treatment, the cost of sewage treatment is greatly improved. Therefore, the problem that the cheap and stable carbon source is needed to be solved by the common stripping type circulating sewage treatment equipment is sought, and the whole device for releasing the cheap and stable carbon source and the sewage treatment equipment can be matched and operated.
China is a large agricultural country, and a large amount of agricultural wastes such as crop straws, wood chips, corn cobs and the like are produced in the annual harvest season. The current huge yield of agricultural waste resources and excessive accumulation of agricultural waste straws are just a serious problem. From the point of view of comprehensive utilization, if the agricultural wastes are treated in an unreasonable way, the waste of precious resources is caused. Because the agricultural waste contains carbon organic matters, mainly cellulose, hemicellulose, lignin and the like, the carbon-containing organic matters can be stably released in the hydrolysis process and further hydrolyzed into small molecular carbon, and if the hydrolyzed small molecular carbon is utilized, the carbon source in common lifting type circulating sewage treatment equipment is supplied. Not only can the carbon source cost be reduced, but also the comprehensive utilization of agricultural waste gas can be realized. However, the adoption of agricultural waste as a slow-release carbon source in air-stripping type circulating sewage treatment equipment has the following problems: 1, the slow release effect of the carbon source of the agricultural waste material is difficult to be matched with the carbon source requirement required by denitrification in the air stripping type circulating sewage treatment equipment; 2, the air-lift type circulating sewage treatment equipment and the agricultural waste carbon source material are not provided with reasonable design devices, the coupling design mutual matching among the combination devices cannot be ensured, and the position of the agricultural waste carbon source material in the air-lift type circulating sewage treatment equipment is specifically installed and placed, so that the air-lift type circulating sewage treatment equipment is not clear. Therefore, the invention aims at the problems, and researches and develops the enhanced gas stripping denitrification circulating sewage treatment equipment, which not only can provide a carbon source for denitrification of the sewage treatment equipment, but also can solve the problem of high dissolved oxygen in an anoxic zone, thereby achieving the purpose of enhancing the denitrification effect of the sewage treatment equipment.
Disclosure of Invention
The invention provides enhanced gas stripping denitrification circulating sewage treatment equipment, which solves the problems in the background technology and realizes the purpose of enhancing denitrification effect by integrally researching and designing a water inlet pipeline, an anaerobic chamber, an anoxic chamber, an aerobic chamber, a rear anaerobic chamber, a rear anoxic chamber, a rear aerobic chamber, a gas stripping circulating reflux device, an aeration device, an inclined tube mud discharging device, an agricultural waste filling device and a micro-filtration device. Meanwhile, the invention has the advantages of no external circulating pump, low running cost, low maintenance cost and small occupied area.
The technical scheme adopted by the invention is as follows:
the utility model provides a reinforce air stripping denitrification circulation sewage treatment device, includes inlet channel, anaerobic room, anoxic room, good oxygen room, rearmounted anaerobic room, rearmounted anoxic room, rearmounted good oxygen room, air stripping circulation reflux unit, aeration equipment and inclined tube mud discharging device, its characterized in that: the agricultural waste treatment device comprises a main air conditioning device, an oxygen-back circulation device, a main air conditioning device, a reverse flow device, a main air conditioning device, a reverse flow device, a reverse ventilation device, an oxygen-back circulation device, a main air conditioning device, an oxygen-back ventilation device, an oxygen-back circulation device, a ventilation device and an aeration device.
Preferably, the aeration device is provided with a longitudinal connecting air pipe and an aeration circular coil pipe, the aeration circular coil pipe is formed by coiling an air pipe, a small through hole is formed in the upper surface of the aeration circular coil pipe, one end of the aeration circular coil pipe is sealed, the other end of the aeration circular coil pipe is connected with the bottom end of the longitudinal connecting air pipe, and the upper initial end of the longitudinal connecting air pipe is connected with a circulating main air pipe through an air pipe.
Preferably, the agricultural waste filling device is provided with a grid mesh composite board and agricultural waste, wherein the grid mesh composite board and the agricultural waste are connected through mutual pressing and clamping, the grid mesh composite board is made by penetrating and installing metal wires in a corrosion-resistant PVC sleeve or a PUC sleeve, the grid mesh composite board is provided with grid mesh plates which are more than or equal to two layers of grid mesh plates, the mutual pressing and clamping are connected into a whole, the agricultural waste is formed by cutting and smashing one or more of corncob, corn stalk, straw stalk and wood dust, the grain size range of the agricultural waste is 3 mm-8 mm, the surface mesh aperture of the grid mesh composite board is 0.5mm, the overall density of the agricultural waste filling device is greater than that of water, and the agricultural waste filling device can be immersed in water.
Preferably, the air stripping reflux unit has an air blowing pipe, a vertical air stripping pipe, a water tank and a reflux pipe, wherein the lower end of the air blowing pipe is connected with the bottom of the vertical air stripping pipe, the upper end of the air blowing pipe is transversely connected with the middle of a circulating main ventilation pipeline through a ventilation pipeline, the bottom end of the vertical air stripping pipe is connected with water through a through hole, the upper end of the vertical air stripping pipe is connected with the bottom of the water tank, one end of the reflux pipe is connected with the side surface of the water tank, and the other end of the reflux pipe can be connected with an anoxic chamber or a rear anoxic chamber.
Preferably, the micro-filtration device is arranged in the rear aerobic chamber and the water outlet sludge discharge area, part of the micro-filtration device is positioned above the inclined tube sludge discharge device in the rear aerobic chamber, the whole micro-filtration device is in a slope shape, a sludge discharge pipeline is arranged on the side surface of the tail part of the micro-filtration device, and the micro-filtration device is provided with an inclined plate with micro-filtration holes and an oxidation disinfection device.
Preferably, a water outlet pipeline is arranged at the outer side of the upper part of the water outlet mud discharging area, a part of micro-filtration device is arranged at the middle part of the water outlet mud discharging area, and a mud discharging pipeline is arranged at the outer side of the lower part of the water outlet mud discharging area.
Preferably, the bottom of the inclined pipe sludge discharge device is provided with a sludge discharge slope surface, and the tail end of the sludge discharge slope surface is positioned near a sludge discharge pipeline.
Compared with the prior art, the invention has the following beneficial effects:
the enhanced gas stripping denitrification circulating sewage treatment equipment is manufactured through the integral research and development design of a water inlet pipeline, an anaerobic chamber, an anoxic chamber, an aerobic chamber, a post anaerobic chamber, a post anoxic chamber, a post aerobic chamber, a gas stripping circulating reflux device, an aeration device, an inclined pipe mud discharging device, an agricultural waste filling device and a micro-filtration device. The invention can solve the following problems of adopting agricultural waste as a slow-release carbon source in the air-stripping type circulating sewage treatment equipment: 1, the slow release effect of the carbon source of the agricultural waste material is difficult to be matched with the carbon source requirement required by denitrification in the air stripping type circulating sewage treatment equipment; 2, the air-lift type circulating sewage treatment equipment and the agricultural waste carbon source material are not provided with reasonable design devices, the coupling design mutual matching among the combination devices cannot be ensured, and the position of the agricultural waste carbon source material in the air-lift type circulating sewage treatment equipment is specifically installed and placed, so that the air-lift type circulating sewage treatment equipment is not clear. Meanwhile, the problems that methanol, ethanol, sodium caproate, glucose and the like are adopted as the supplemental carbon source of the anoxic zone, and the denitrification effect of sewage treatment can be improved, but the sewage treatment cost is greatly improved are solved.
The invention can ensure the enhanced denitrification effect, and simultaneously realize the optimized coupling matching of the sewage treatment equipment and the agricultural waste slow-release carbon source, and has the advantages of no external circulating pump, low operation cost, less maintenance cost and small occupied area.
Drawings
FIG. 1 is a schematic view of the overall left side of the present invention;
FIG. 2 is a schematic view of the entire right side of the present invention;
FIG. 3 is a schematic diagram of a stripping cycle reflux unit according to the present invention;
FIG. 4 is a schematic view of an agricultural waste packing apparatus according to the present invention;
FIG. 5 is a schematic diagram of a microfiltration device according to the invention;
FIG. 6 shows 30m per day treatment according to the invention 3 The equipment for manufacturing domestic sewage is actually operated to obtain a denitrification effect detection diagram;
FIG. 7 is a graph showing denitrification effect of domestic sewage through the apparatus of the present invention versus time.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the invention, are within the scope of the invention based on the embodiments of the invention.
The present invention will be described in further detail with reference to examples and embodiments.
Referring to the attached drawings, the enhanced gas stripping denitrification circulating sewage treatment equipment comprises a water inlet pipeline (14), an anaerobic chamber (2), an anoxic chamber (3), an aerobic chamber (5), a rear anaerobic chamber (6), a rear anoxic chamber (11), a rear aerobic chamber (10), a gas stripping circulating reflux device (8), an aeration device (4) and an inclined pipe sludge discharge device (12), and is characterized in that: the agricultural waste filling device (7) and the microfiltration device (13) are also included, the water inlet pipeline (14) is positioned at the top of the anaerobic chamber (2), the anaerobic chamber (2) is provided with a left anaerobic chamber (201) and a right anaerobic chamber (202), the lower parts of the left and right anaerobic chambers (2) are connected through water passing pipelines, the upper left anaerobic chamber (201) is connected with the anoxic chamber (3) through the top water passing pipeline, the anoxic chamber (3) is connected with the lower part of the aerobic chamber (5) through the bottom water passing pipeline, the aerobic chamber (5) is connected with the rear anaerobic chamber (6) through the top water passing pipeline, the rear anaerobic chamber (6) is connected with the lower part of the rear anoxic chamber (11) through the bottom water passing pipeline, the rear anoxic chamber (11) is connected with the rear aerobic chamber (10) through a top water receiving pipeline, a water outlet pipeline (901) is arranged in the middle of the rear aerobic chamber (10), one part of inclined pipe sludge discharging device (12) is positioned below the rear anoxic chamber (11) and the rear aerobic chamber (10), the other part of inclined pipe sludge discharging device (12) is positioned below the micro-filtration device (13), a sludge discharging pipeline (902) is arranged at the lower part of the side surface of the mounting area of the micro-filtration device (13), the agricultural waste filling device (7) is arranged inside the anaerobic chamber (2), the anoxic chamber (3), the rear anaerobic chamber (6) and the rear anoxic chamber (10), the air stripping circulation reflux device (8) is provided with an air stripping reflux device (803) and a circulation main ventilation pipeline (802), the air stripping reflux device (903) is arranged in a joint area of an installation area of the micro-filtration device (13) and the upper left anaerobic chamber (201), the circulation main ventilation pipeline (802) is arranged in an area in the middle of the anaerobic chamber (2), the anoxic chamber (3), the aerobic chamber (5) and the rear anaerobic chamber (6), the rear anoxic chamber (11) and the rear aerobic chamber (10), one end of the circulation main ventilation pipeline (802) is connected with a blower (801), the other end of the circulation main ventilation pipeline (802) is closed, the circulation main ventilation pipeline (802) is connected with the air stripping reflux device (8) through a ventilation pipeline, and the aeration device (4) is arranged at the bottoms of the anoxic chamber (3), the aerobic chamber (5), the rear anoxic chamber (11) and the rear aerobic chamber (10).
Preferably, the aeration device (4) is provided with a longitudinal connecting air pipe (402) and an aeration circular coil pipe (401), the aeration circular coil pipe is formed by coiling an aeration pipe (401), a small through hole is formed in the upper surface of the aeration circular coil pipe (401), one end of the aeration circular coil pipe (401) is sealed, the other end of the aeration circular coil pipe (401) is connected with the bottom end of the longitudinal connecting air pipe (402), and the upper initial end of the longitudinal connecting air pipe (402) is connected with a circulating main ventilation pipeline (802) through a ventilation pipeline.
Preferably, the agricultural waste filling device (7) is provided with a grid mesh composite board (701) and agricultural waste (702) which are mutually connected in a pressing and clamping way, the grid mesh composite board (701) is made by penetrating metal wires into a corrosion-resistant PVC sleeve or a PUC sleeve, the grid mesh composite board (701) is provided with grid mesh plates which are more than or equal to two layers of grid mesh plates and are mutually pressed and clamped into a whole, the agricultural waste (702) is formed by cutting, crushing and mixing one or more of corncobs, corn stalks, straw stalks and wood chips, the grain size range of the agricultural waste (702) is 3-8 mm, the surface grid pore diameter of the grid composite board (701) is 0.5mm, the overall density of the agricultural waste filling device (7) is greater than that of water, and the agricultural waste filling device (7) can be immersed in the water.
Preferably, the air stripping reflux device (803) is provided with an air blowing pipe (8031), a vertical air stripping pipe (8033), a water tank (8032) and a reflux pipe (8034), the lower end of the air blowing pipe (8031) is connected with the bottom of the vertical air stripping pipe (8033), the upper end of the air blowing pipe (9031) is transversely connected with the middle of a circulating main ventilation pipeline (802) through an air pipe, the bottom end of the vertical air stripping pipe (8033) is connected with water through a through hole, the upper end of the vertical air stripping pipe (8033) is connected with the bottom of the water tank (8032), one end of the reflux pipe (8034) is connected with the side face of the water tank (8032), and the other end of the reflux pipe (8034) can be connected with an anoxic chamber (3) or a rear anoxic chamber (11).
Preferably, the micro-filtration device (13) is arranged in the rear aerobic chamber (10) and the effluent sludge discharge area (9), part of the micro-filtration device (13) is positioned above the inclined tube sludge discharge device (12) in the rear aerobic chamber (10), the whole micro-filtration device (13) is in a slope shape, a sludge discharge pipeline (902) is arranged on the side surface of the tail part of the micro-filtration device (13), and the micro-filtration device (13) is provided with an inclined plate (1301) with micro-filtration holes and an oxidation disinfection device (1302).
Preferably, a water outlet pipeline (901) is arranged on the outer side of the upper part of the water outlet mud discharging area (9), a part of micro-filtration device (13) is arranged in the middle of the water outlet mud discharging area (9), and a mud discharging pipeline (902) is arranged on the outer side of the lower part of the water outlet mud discharging area (9).
Preferably, the bottom of the inclined pipe sludge discharging device (12) is provided with a sludge discharging slope surface (1201), and the tail end of the sludge discharging slope surface (1021) is positioned near the sludge discharging pipe (902).
When in installation: the left anaerobic chamber (2) and the right anaerobic chamber (202) are arranged on the left side of the equipment room (1), the right anaerobic chamber (202) is arranged on the rear side of the left anaerobic chamber (201), a water inlet pipeline (14) is arranged at the top of the right anaerobic chamber (202), the lower parts of the left anaerobic chamber (2) and the right anaerobic chamber (2) are connected through a water passing pipeline, the anoxic chamber (3) is arranged on the left side of the left anaerobic chamber (201), the aerobic chamber (5) is arranged on the left side of the anoxic chamber (3), the rear anaerobic chamber (6) is arranged on the left side of the aerobic chamber (5), the rear anoxic chamber (11) is arranged on the rear side of the rear anaerobic chamber (6), the rear aerobic chamber (10) is arranged on the right side of the rear anoxic chamber (11), the water outlet mud draining area (9) is arranged in the area between the rear aerobic chamber (10) and the right anaerobic chamber (202), the left anaerobic chamber (201) is connected with the anoxic chamber (3) through a top water passing pipeline, the anoxic chamber (3) is connected with the lower part of the aerobic chamber (5) through a bottom water passing pipeline, the aerobic chamber (5) is connected with the lower part of the anoxic chamber (6) through a top water passing pipeline, the rear anoxic chamber (10) is connected with the upper part of the rear anoxic chamber (10) through the water draining area (10), a sludge discharge pipeline (902) is arranged at the outer side of the lower part of the water outlet sludge discharge area (9); the main control cabinet (101) and the air blower (801) are arranged between devices, the air blower (801) is connected with the main control cabinet (101) through a wire harness, the circulating main ventilation pipeline (802) is arranged in the middle of the anaerobic chamber (2), the anoxic chamber (3), the aerobic chamber (5) and the rear anaerobic chamber (6), the rear anoxic chamber (11) and the rear aerobic chamber (10), and one end of the circulating main ventilation pipeline (802) is connected with the air blower (801); an aeration circular coil pipe (401) in the aeration device (4) is arranged at the bottoms of the anoxic chamber (3), the aerobic chamber (5), the rear anoxic chamber (11) and the rear aerobic chamber (10), the other end of the aeration circular coil pipe (401) is connected with the tail end of the bottom of a longitudinal connecting air pipe (402), and the initial end of the upper part of the longitudinal connecting air pipe (402) is connected with a circulating main ventilation pipeline (802) through a ventilation pipeline; the vertical gas stripping pipe (8033) in the gas stripping reflux device (803) is arranged in the rear-mounted aerobic chamber (10), the lower end of the gas blowing pipe (8031) is connected with the bottom of the vertical gas stripping pipe (8033), the upper end of the gas blowing pipe (8031) is transversely connected with the middle of the circulating main ventilation pipe (802) through a ventilation pipe, the upper end of the vertical gas stripping pipe (8033) is connected with the bottom of the water tank (8032), one end of the reflux pipe (8034) is connected with the side surface of the water tank (8032), and the other end of the reflux pipe (8034) can be connected with the anoxic chamber (3) or the rear-mounted anoxic chamber (11); the whole inclined plate (1301) with micro-filtration holes in the micro-filtration device (13) is in a slope shape and is arranged in the rear aerobic chamber (10) and the water outlet mud discharge area (9), and the oxidation disinfection device (1302) in the micro-filtration device (13) is arranged below the inclined plate (1301) with micro-filtration holes; one part of the inclined tube sludge discharge device (12) is arranged below the rear anoxic chamber (11) and the rear aerobic chamber (10), the other part of the inclined tube sludge discharge device (12) is arranged below the micro-filtration device (13), and the tail end of a sludge discharge slope surface (1201) at the bottom of the inclined tube sludge discharge device (12) is positioned near a sludge discharge pipeline (902); the agricultural waste filling device (7) is respectively arranged inside the anaerobic chamber (2), the anoxic chamber (3), the post-anaerobic chamber (6) and the post-anoxic chamber (11).
When in use, the utility model is characterized in that: sewage to be treated enters the right anaerobic chamber (202) through a water inlet pipeline (14) at the top of the right anaerobic chamber (202), and enters the left anaerobic chamber (201) through a water passing pipeline at the lower part, and is subjected to preliminary denitrification treatment in the left and right anaerobic chambers (2) under the action of an agricultural waste filling device (7) serving as a slow-release carbon source; the sewage to be treated enters the anoxic chamber (3) from the left anaerobic chamber (201) through a water passing pipeline at the top, an aeration device (4) in the anoxic chamber (3) works to increase the oxygen content of the sewage to be treated in the anoxic chamber (3), and an agricultural waste filling device (7) is matched as a slow-release carbon source to promote facultative microorganisms to reprocess the sewage to be treated; then the sewage to be treated enters an aerobic chamber (5) from an anoxic chamber (3) through a lower water pipeline, and the oxygen content of the sewage to be treated is increased in the aerobic chamber (5) through an aeration device (4), so that aerobic microorganisms in the aerobic tank (5) are promoted to treat the sewage to be treated; the sewage to be treated enters a post-anaerobic chamber (6) from an aerobic chamber (5) through a top water passing pipeline, and is subjected to denitrification treatment again under the action of taking an agricultural waste filling device (7) as a slow-release carbon source in the post-anaerobic chamber (6); sewage after denitrification treatment in the rear anaerobic chamber (6) enters the rear anoxic chamber (11) through a top water passing pipeline, the sewage entering the rear anoxic chamber (11) slides down to a water outlet sludge discharge area (9) from a sludge discharge slope surface (1201) under the action of an inclined pipe sludge discharge device (12), is discharged through a sludge discharge pipeline (902) at the lower part of the water outlet sludge discharge area (9), enters the upper part of the rear anoxic chamber (11) through a water body of the inclined pipe sludge discharge device (12), and is subjected to secondary treatment on the water body at the upper part of the rear anoxic chamber (11) under the action of an aeration device (4) and an agricultural waste filling device (7) serving as a slow-release carbon source; the water body treated by the rear anoxic chamber (11) enters the rear aerobic chamber (10) through a top water passing pipeline, and after being treated by the rear aerobic chamber (10), the water body is discharged and stored for use through a middle water outlet pipeline (901) of the rear aerobic chamber (10); meanwhile, the bottom of the rear anoxic chamber (11) enters a water body of the rear aerobic chamber (10) along with sludge on a sludge discharge slope surface (1201), the water body is oxidized and disinfected by an oxidation and disinfection device (1302) in a microfiltration device (13), filtered by an inclined plate (1301) with microfiltration holes and enters the rear aerobic chamber (10), and after being treated by the rear aerobic chamber (10), the water body is discharged and stored by a middle water outlet pipeline (901) of the rear aerobic chamber (10); simultaneously, under the blowing action of a blowing pipe (8031), the water body mixture at the bottom of the rear-mounted aerobic chamber (10) enters a water tank (8032) through a vertical gas stripping pipe (8033), and then enters an anoxic chamber (3) or a rear-mounted anoxic chamber (11) through a return pipe (8034) from the water tank (8032) for retreating; sludge on a sludge discharge slope surface (1201) at the bottom of the rear aerobic chamber (10) enters a water discharge sludge area (9) together with water, the sludge is discharged through a sludge discharge pipeline (902) at the lower part of the water discharge sludge area (9), the water in the water discharge sludge area (9) enters the upper part of the water discharge sludge area (9) through a sloping plate (1301) with micro-filtration holes, and is discharged through a water discharge pipeline (901) of the water discharge sludge area (9) for storage.
After the agricultural waste filling device (7) is used for a certain time, when the agricultural waste (702) needs to be replaced, the agricultural waste filling device (7) is integrally taken out, the grid composite plates (701) which are connected with each other in a pressing mode are separated, the agricultural waste (702) which is used in the grid composite plates (701) is properly treated, unused agricultural waste (702) is put into the grid composite plates (701) which are connected with each other in a pressing mode, the agricultural waste filling device (7) is manufactured, and the agricultural waste filling device (7) is installed in the anaerobic chamber (2), the anoxic chamber (3), the post-anaerobic chamber (6) and the post-anoxic chamber (11) for use.
The invention can solve the following problems of adopting agricultural waste as a slow-release carbon source in the air-stripping type circulating sewage treatment equipment: 1, the slow release effect of the carbon source of the agricultural waste material is difficult to be matched with the carbon source requirement required by denitrification in the air stripping type circulating sewage treatment equipment; 2, the air-lift type circulating sewage treatment equipment and the agricultural waste carbon source material are not provided with reasonable design devices, the coupling design mutual matching among the combination devices cannot be ensured, and the position of the agricultural waste carbon source material in the air-lift type circulating sewage treatment equipment is specifically installed and placed, so that the air-lift type circulating sewage treatment equipment is not clear. Meanwhile, the problems that methanol, ethanol, sodium caproate, glucose and the like are adopted as the supplemental carbon source of the anoxic zone, and the denitrification effect of sewage treatment can be improved, but the sewage treatment cost is greatly improved are solved.
The invention can ensure the enhanced denitrification effect, and simultaneously realize the optimized coupling matching of the sewage treatment equipment and the agricultural waste slow-release carbon source, and has the advantages of no external circulating pump, low operation cost, less maintenance cost and small occupied area. Is suitable for wide application in sewage treatment.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (3)
1. The utility model provides a reinforce air stripping denitrification circulation sewage treatment device, includes inlet channel, anaerobic room, anoxic room, good oxygen room, rearmounted anaerobic room, rearmounted anoxic room, rearmounted good oxygen room, air stripping circulation reflux unit, aeration equipment and inclined tube mud discharging device, its characterized in that: the agricultural waste filling device comprises an agricultural waste filling device and a microfiltration device, wherein a water inlet pipeline is arranged at the top of an anaerobic chamber, the anaerobic chamber is provided with a left anaerobic chamber and a right anaerobic chamber, the lower parts of the left anaerobic chamber and the right anaerobic chamber are connected through water passing pipelines, the upper part of the left anaerobic chamber is connected with an anoxic chamber through a water passing pipeline at the top, the anoxic chamber is connected with a rear anaerobic chamber through a water passing pipeline at the bottom, the lower parts of the rear anaerobic chamber and the rear anoxic chamber are connected through a water passing pipeline at the bottom, the rear anoxic chamber is connected with a rear aerobic chamber through a water receiving pipeline at the top, the middle part of the rear aerobic chamber is provided with a water outlet pipeline, one part of inclined pipe mud discharging device is positioned below the rear anoxic chamber and the rear aerobic chamber, the other part of inclined pipe mud discharging device is positioned below the microfiltration device, the lower part of the side surface of the installation area of the microfiltration device is provided with a sludge discharge pipeline, the agricultural waste filling device is arranged in the anaerobic chamber, the anoxic chamber, the rear anaerobic chamber and the rear anoxic chamber, the air stripping circulation reflux device is provided with an air stripping reflux device and a circulation main ventilation pipeline, the air stripping reflux device is arranged in the joint area of the installation area of the microfiltration device and the upper left anaerobic chamber, the circulation main ventilation pipeline is arranged in the area among the anaerobic chamber, the anoxic chamber, the aerobic chamber and the rear anaerobic chamber, the rear anoxic chamber and the rear aerobic chamber, one end of the circulation main ventilation pipeline is connected with a blower, the other end of the circulation main ventilation pipeline is closed, the circulation main ventilation pipeline is connected with the air stripping reflux device aeration device through the ventilation pipeline, the aeration device is arranged at the bottoms of the anoxic chamber, the aerobic chamber, the rear anoxic chamber and the rear aerobic chamber,
the air stripping reflux device comprises an air blowing pipe, a vertical air stripping pipe, a water tank and a reflux pipe, wherein the lower end of the air blowing pipe is connected with the bottom of the vertical air stripping pipe, the upper end of the air blowing pipe is transversely connected with the middle of a circulating main ventilation pipeline through a ventilation pipeline, the bottom end of the vertical air stripping pipe is connected with water through a through hole, the upper end of the vertical air stripping pipe is connected with the bottom of the water tank, one end of the reflux pipe is connected with the side surface of the water tank, and the other end of the reflux pipe can be connected with an anoxic chamber or a rear anoxic chamber;
the micro-filtration device is arranged in the rear aerobic chamber and the water outlet sludge discharge area, part of the micro-filtration device is positioned above the inclined tube sludge discharge device in the rear aerobic chamber, the whole micro-filtration device is in a slope shape, a sludge discharge pipeline is arranged on the side surface of the tail part of the micro-filtration device, and the micro-filtration device is provided with an inclined plate with micro-filtration holes and an oxidation disinfection device;
a water outlet pipeline is arranged at the outer side of the upper part of the water outlet mud discharging area, a part of micro-filtration device is arranged at the middle part of the water outlet mud discharging area, and a mud discharging pipeline is arranged at the outer side of the lower part of the water outlet mud discharging area;
the bottom of the inclined pipe sludge discharge device is provided with a sludge discharge inclined surface, and the tail end of the sludge discharge inclined surface is positioned near a sludge discharge pipeline;
the water body treated in the rear anoxic chamber enters the rear aerobic chamber through a top water passing pipeline, and is discharged, stored and used through a middle water outlet pipeline of the rear aerobic chamber after being treated in the rear aerobic chamber; meanwhile, the bottom of the rear anoxic chamber enters a water body of the rear aerobic chamber along with sludge on a sludge discharge slope surface, the water body enters the rear aerobic chamber after being oxidized and disinfected by an oxidizing and disinfecting device in a microfiltration device, and then enters the rear aerobic chamber after being filtered by a sloping plate with microfiltration holes, the water body is stored and used by a middle water outlet pipeline of the rear aerobic chamber after being treated in the rear aerobic chamber, and meanwhile, a water body mixture at the bottom of the rear aerobic chamber enters a water tank through a vertical air stripping pipe under the blowing action of a gas blowing pipe and then enters the anoxic chamber or the rear anoxic chamber through a backflow pipe for retreating by the water tank; sludge on the sludge discharge slope surface at the bottom of the rear-mounted aerobic chamber enters a water discharge sludge area together with water, the sludge is discharged through a sludge discharge pipeline at the lower part of the water discharge sludge area, the water in the water discharge sludge area enters the upper part of the water discharge sludge area through an inclined plate with micro-filtration holes, and is discharged and stored through a water discharge pipeline of the water discharge sludge area, so that the optimal coupling matching of sewage treatment equipment and agricultural waste slow-release carbon sources is realized, and no external circulating pump is used.
2. The enhanced gas stripping denitrification circulating sewage treatment equipment according to claim 1, wherein the aeration device is provided with a longitudinal connecting air pipe and an aeration circular coil pipe, the aeration circular coil pipe is formed by coiling an aeration pipe, a small through hole is formed in the upper surface of the aeration circular coil pipe, one end of the aeration circular coil pipe is sealed, the other end of the aeration circular coil pipe is connected with the bottom end of the longitudinal connecting air pipe, and the upper initial end of the longitudinal connecting air pipe is connected with a circulating main ventilation pipe through a ventilation pipe.
3. The enhanced gas stripping denitrification circulating sewage treatment equipment according to claim 1, wherein the agricultural waste filling device is characterized by comprising a grid composite board and agricultural waste, wherein the grid composite board and the agricultural waste are connected through mutual clamping, metal wires are arranged in a corrosion-resistant PVC sleeve or a PUC sleeve in a penetrating mode, the grid composite board is formed by mutually clamping and connecting grid plates of two layers of grid plates, the agricultural waste is formed by crushing and mixing one or more of corncobs, corn stalks, straw stalks and wood chips through cutting, the grain size range of the agricultural waste is 3 mm-8 mm, the surface grid aperture of the grid composite board is 0.5mm, the density of the whole agricultural waste filling device is greater than that of water, and the agricultural waste filling device can be immersed in water.
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