CN114772858A - Equipment and method for treating water body of light and medium eutrophication artificial landscape lake - Google Patents
Equipment and method for treating water body of light and medium eutrophication artificial landscape lake Download PDFInfo
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- CN114772858A CN114772858A CN202210461169.1A CN202210461169A CN114772858A CN 114772858 A CN114772858 A CN 114772858A CN 202210461169 A CN202210461169 A CN 202210461169A CN 114772858 A CN114772858 A CN 114772858A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 159
- 238000012851 eutrophication Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004062 sedimentation Methods 0.000 claims abstract description 79
- 238000005345 coagulation Methods 0.000 claims abstract description 56
- 230000015271 coagulation Effects 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000010802 sludge Substances 0.000 claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 21
- 239000000725 suspension Substances 0.000 claims abstract description 19
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 15
- 239000000969 carrier Substances 0.000 claims abstract 7
- 238000006243 chemical reaction Methods 0.000 claims description 32
- 239000008394 flocculating agent Substances 0.000 claims description 27
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 18
- 238000005189 flocculation Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims description 12
- 230000016615 flocculation Effects 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 11
- 238000005273 aeration Methods 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 10
- 239000003344 environmental pollutant Substances 0.000 claims description 9
- 231100000719 pollutant Toxicity 0.000 claims description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 230000005484 gravity Effects 0.000 claims description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 230000001112 coagulating effect Effects 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 244000005700 microbiome Species 0.000 claims description 6
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 5
- 230000000249 desinfective effect Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 239000011800 void material Substances 0.000 claims description 3
- 238000000855 fermentation Methods 0.000 claims 1
- 230000004151 fermentation Effects 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 241000894006 Bacteria Species 0.000 abstract 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 abstract description 3
- 239000002352 surface water Substances 0.000 abstract description 3
- 230000009471 action Effects 0.000 abstract description 2
- 206010021143 Hypoxia Diseases 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 235000015097 nutrients Nutrition 0.000 description 3
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- 241001465754 Metazoa Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
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- 239000012530 fluid Substances 0.000 description 1
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- 239000010842 industrial wastewater Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
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- 238000000746 purification Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/302—Nitrification and denitrification treatment
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
- C02F1/325—Irradiation devices or lamp constructions
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Landscapes
- 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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a device and a method for treating a light and medium eutrophication artificial landscape lake water body. The equipment comprises an anoxic tank, an aerobic tank, a pre-sedimentation tank, a coagulation tank, a sedimentation tank, an ultraviolet disinfection device and the like; the patent also relates to a treatment method of the moderately and slightly eutrophic artificial landscape lake water body, wherein the suspension carriers are arranged in the anoxic tank to increase the sludge concentration, the lake water is mixed with the muddy water mixed liquid returned from the preliminary sedimentation tank under the action of the stirrer, and nitrate nitrogen brought in the returned mixed liquid is removed by denitrification by using denitrifying bacteria on the suspension carriers and in the sludge in the tank. The separated sewage is disinfected to reach V-class water in GB3838-2002 surface water environmental quality standard, and is suitable for water quality standard of agricultural water areas and water areas required by general landscapes, and the treated clean water is returned to the original water body again.
Description
Technical Field
The invention relates to a device and a method for treating a light and medium eutrophication artificial landscape lake water body, belonging to the field of ecological treatment.
Background
A clear lake water is not only a bright landscape in a city, but also provides a playing and inhabiting place for citizens and small animals, and plays a role in improving microclimate of the surrounding environment. In recent years, with the development of social economy and the improvement of living standard of people, artificial lakes have increasingly come into the lives of residents due to unique ecological and landscape functions.
Compared with the water body of a natural lake, the artificial landscape lake has the characteristics of small water area, shallow water depth, relatively small water storage capacity, easy pollution, low self-purification capacity of the water body and the like. The lake bottom mud and sediments contain a large amount of nutrient substances, the underwater ecology mainly comprises algae and small aquatic plants, the large aquatic plants are fewer, and the pollution resistance and load capacity are low. However, in the operation process, as population growth, industrialization and urbanization progress are continuously developed, the water body of the artificial lake is strongly interfered by human activities, and industrial wastewater, domestic sewage and other harmful substances are discharged into the artificial lake through ground runoff. At present, under the policy of vigorously promoting ecological environment protection in China, exogenous pollution of the urban artificial lake is basically blocked, but endogenous pollution is still difficult to treat. The endogenous pollution in the lake mainly means that nutrient substances entering the lake gradually settle to the surface layer of the lake substrate through various physical, chemical and biological actions. On one hand, nitrogen and phosphorus nutrients accumulated on the surface layer of the bottom mud can be directly ingested by microorganisms, enter a food chain and participate in the circulation of an aquatic ecosystem; on the other hand, the sludge can be released from the bottom sludge and re-enter the water under certain physical, chemical and environmental conditions, thereby forming pollution load in the lake. According to investigation, most of artificial landscape lake water bodies in China still have pollution of different degrees, and the phenomena of water deterioration and eutrophication occur.
The eutrophication of the water body can not only reduce the organoleptic degree of the water body, but also cause excessive propagation of algae and other plankton in the water body in the eutrophication state, thereby causing the reduction of dissolved oxygen in the water body, the increase of nitrogen and phosphorus, the deterioration of water quality, the increase of water body chroma, the reduction of transparency, the death of a large number of fishes and other organisms, the damage to the normal ecological balance of the artificial lake, and the great reduction of landscape value.
The current common treatment measures for eutrophication of artificial landscape lakes include artificial aeration, planting of large aquatic plants, and the use of artificial floating islands. The artificial aeration can recover and enhance the activity of aerobic microorganisms in the water body, so that pollutants in the water body can be purified, the release of bottom mud phosphorus is inhibited, the treatment effect on the black and odorous river channel is good, but the energy consumption is high and the treatment effect is not ideal for artificial lakes with relatively large water areas and relatively low eutrophication degrees. The planting of large-scale aquatic plants and artificial floating islands has the defects of long effective period, difficult maintenance, easy breeding of mosquitoes and the like.
Therefore, the invention provides a treatment method for effectively improving the water quality and the appearance of the medium and light eutrophic landscape lake water body.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides light and medium eutrophication artificial landscape lake water body treatment equipment, which comprises an anoxic tank, an aerobic tank, a preliminary sedimentation tank, a coagulation tank, a sedimentation tank, an ultraviolet disinfection device and the like;
the anoxic pond is used for introducing light and medium eutrophic artificial landscape lake water into the anoxic pond for anaerobic reaction to obtain sewage after the reaction;
the aerobic tank is used for carrying out aerobic reaction on the sewage to obtain muddy water after the aerobic reaction;
the pre-settling tank is used for pre-settling the muddy water to obtain a mixture of clear liquid and muddy water; a reflux pump is arranged at the bottom of the pre-settling tank, and the mud-water mixture is pumped into the anoxic tank;
the coagulation tank is used for coagulating clear liquid to form a mud-water mixed liquid;
the sedimentation tank is used for settling the mud-water mixed liquid to obtain sludge and clear water, and the sludge is settled at the bottom of the sedimentation tank and is periodically cleaned;
the ultraviolet disinfection device is used for disinfecting clean water, and the disinfected clean water is discharged into lake water.
Set up oxygen deficiency pond mixer, MBBR suspension carrier in the oxygen deficiency pond, oxygen deficiency pond mixer is used for the sewage in the intensive mixing oxygen deficiency pond, set up the perforated plate between oxygen deficiency pond and the aerobic tank, sewage after the reaction in the oxygen deficiency pond gets into the aerobic tank through the perforated plate.
The aerobic tank is internally provided with a perforated aeration pipe, an aerobic tank blower and an MBBR suspended carrier, the aerobic tank blower supplies oxygen to the interior of the aerobic tank through the perforated aeration pipe at the bottom of the aerobic tank, the perforated pipe is arranged between the aerobic tank and the pre-settling tank, and muddy water after the reaction of the aerobic tank enters the pre-settling tank through the perforated pipe.
The device is characterized in that a guide cylinder and a reflux pump are arranged in the pre-settling tank, the pre-settling tank is subjected to mud-water primary separation by using self weight after water distribution through the guide cylinder, upper clear liquid automatically flows into the coagulation tank through the opening of the tank wall, and the reflux pump pumps a mud-water mixture into the anoxic tank.
The coagulation tank is divided into two grids, the two grids are respectively provided with a coagulation stirrer and a flocculation coagulation stirrer, an aluminum salt dosing barrel is arranged outside the coagulation tank, after dosing is carried out on the salt dosing barrel, the salt dosing barrel is stirred by the coagulation stirrer and removes phosphorus in water, and the salt dosing barrel is provided with an aluminum salt stirrer and an aluminum salt dosing metering pump;
a flocculating agent dosing barrel is arranged outside the coagulation tank, the flocculating agent dosing barrel is stirred by a flocculation coagulation stirrer after dosing, and flocculation is carried out, and the flocculating agent dosing barrel is provided with a flocculating agent stirrer and a flocculating agent dosing metering pump;
and forming large-particle pollutants after flocculation in the coagulation tank, and entering a sedimentation tank.
The sedimentation tank sets up sedimentation tank play water weir, sedimentation tank pipe chute, sedimentation tank bagger, through setting up the sedimentation tank pipe chute separation large granule pollutant at the sedimentation tank middle part, and the mud after the separation sinks along the sedimentation tank pipe chute, and clear water discharge sedimentation tank sets up the sedimentation tank bagger bottom the sedimentation tank, and the sedimentation is in the sedimentation tank bagger after mud falls.
A method for treating the water bodies of light and medium eutrophic artificial landscape lakes comprises the following steps;
introducing light and medium eutrophication artificial landscape lake water into an anoxic pond for reaction, and then enabling obtained sewage to flow into an aerobic pond;
automatically flowing the muddy water after the reaction in the aerobic tank to a pre-settling tank for settling;
enabling clear liquid at the upper part of the pre-settling tank to flow into the coagulation tank automatically through the opening of the tank wall;
pumping the mud-water mixture at the bottom of the pre-settling tank into an anoxic tank;
the pre-settled upper clear liquid flows into a coagulation tank for coagulation reaction to form a mud-water mixed liquid;
after the sludge-water mixed liquid flows into a sedimentation tank, separating sludge from clear water;
the separated clear water is disinfected by an ultraviolet disinfection device and then discharged into lake water again.
The anaerobic tank is internally provided with zymophyte, denitrifying microorganism and suspension carrier, the mixing stirrer is arranged in the anaerobic tank, the suspension carrier has the specific gravity of 0.94-0.98 and the porosity of more than 90 percent, the aerobic tank is internally provided with activated sludge capable of removing organic matters and ammonia nitrogen and the suspension carrier attached with a biological membrane, the specific gravity of the suspension carrier is 0.94-0.98, and the porosity of more than 90 percent.
The coagulating basin is divided into two lattices, a stirrer is arranged in the two lattices, a dosing device is arranged outside the coagulating basin, aluminum salt and a flocculating agent are added through a metering pump and a pipeline, the aluminum salt is added in the first lattice, and the flocculating agent is added in the second lattice.
The sedimentation tank adopts an inclined tube sedimentation tank, the angle of the inclined tube is 60-70 degrees, and the length of the inclined tube is 800-1000 mm.
The separated sewage is disinfected to reach the V-type water in GB3838-2002 surface water environmental quality standard, is suitable for the water quality standard of agricultural water areas and water areas required by general landscapes, and the treated clean water returns to the original water body again.
The invention has the following beneficial effects:
1. the invention adopts an MBBR anoxic/aerobic combined process, adopts MBBR filler as a carrier, and combines a biomembrane method and an activated sludge method, thereby improving the biomass and the biological species in the reactor and further improving the treatment efficiency of the reactor. Each carrier has different biological species inside and outside, anaerobic bacteria or facultative bacteria grow inside, and aerobic bacteria grow outside, so that each carrier is a micro-reactor, nitrification reaction and denitrification reaction exist simultaneously, and the treatment effect is improved.
2. The invention has strong shock resistance and recovery capability, and has good adaptability and removal effect on low-temperature micro-polluted water.
3. The invention has the advantages of high process load and small occupied area. The removal load of pollutants is 2-3 times that of the traditional biomembrane method and activated sludge method. The treatment flow rate can be improved for medium and light eutrophication water quality so as to improve the efficiency.
4. The method has low energy consumption, is environment-friendly and energy-saving, and can treat the polluted water and return the polluted water to the original water body, thereby achieving the aims of green economy and sustainable development.
5. The invention can be integrated by adopting a process system, can adopt integrated box type integration, is convenient to install, can be customized into appearance integrated with landscape, and has practicability and aesthetic property. In the prior art, high automation can be realized, and the requirements of manpower and subsequent management and maintenance are reduced.
The above-described and other features, aspects, and advantages of the present application will become more apparent with reference to the following detailed description.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic view of a process apparatus of the present invention.
Reference numerals are as follows:
t1-anoxic tank, T2-aerobic tank, T3-preliminary sedimentation tank, T4-coagulation tank, T5-sedimentation tank, T6-aluminum salt dosing barrel and T7-flocculating agent dosing barrel;
m1-water inlet pump, M2-anoxic tank stirrer, M3-aerobic tank blower, M4-reflux pump, M5-sedimentation tank coagulation stirrer, M6-flocculation coagulation stirrer, M7-ultraviolet disinfection and sterilization device, M8-aluminum salt stirrer, M9-aluminum salt feeding and metering pump, M10-flocculating agent stirrer and M11-flocculating agent feeding and metering pump;
z1-perforated plate, Z2-perforated aeration pipe, Z3-perforated pipe, Z4-draft tube, Z5-sedimentation tank effluent weir, Z6-sedimentation tank inclined pipe, Z7-sedimentation tank mud bucket, and Z8-MBBR suspended carrier.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings of the embodiments of the present invention. It should be apparent that the described embodiments are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without inventive step, are within the scope of protection of the invention.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
Referring to fig. 1, the device for treating the water body of the light and medium eutrophication artificial landscape lake comprises an anoxic tank, an aerobic tank, a pre-sedimentation tank, a coagulation tank, a sedimentation tank and an ultraviolet disinfection device;
the anoxic tank is used for introducing the light and medium eutrophication artificial landscape lake water into the anoxic tank for carrying out anaerobic reaction to obtain sewage after the reaction;
the aerobic tank is used for carrying out aerobic reaction on the sewage to obtain muddy water after the aerobic reaction;
the pre-settling tank is used for pre-settling the muddy water to obtain a mixture of clear liquid and muddy water; a reflux pump is arranged at the bottom of the preliminary sedimentation tank, and the mud-water mixture is pumped into the anoxic tank;
the coagulation tank is used for coagulating the clear liquid to form muddy water mixed liquid;
the sedimentation tank is used for settling the mud-water mixed liquid to obtain sludge and clear water, and the sludge is settled at the bottom of the sedimentation tank and is cleaned regularly;
the ultraviolet disinfection device is used for disinfecting clean water, and the disinfected clean water is discharged into lake water.
Set up oxygen deficiency pond mixer, MBBR suspension carrier in the oxygen deficiency pond, oxygen deficiency pond mixer is used for the sewage in the intensive mixing oxygen deficiency pond, sets up the perforated plate between oxygen deficiency pond and the good oxygen pond, and the sewage after the reaction in the oxygen deficiency pond gets into good oxygen pond through the perforated plate.
The aerobic tank is internally provided with a perforated aeration pipe, an aerobic tank blower and an MBBR suspended carrier, the aerobic tank blower supplies oxygen to the aerobic tank through the perforated aeration pipe at the bottom of the aerobic tank, a perforated pipe is arranged between the aerobic tank and the pre-settling tank, and muddy water after the reaction of the aerobic tank enters the pre-settling tank through the perforated pipe.
The pre-settling tank is internally provided with a guide cylinder and a reflux pump, the pre-settling tank is subjected to initial mud-water separation by using the dead weight after water distribution through the guide cylinder, the supernatant fluid at the upper part automatically flows into the coagulation tank through the opening of the tank wall, and the reflux pump pumps the mud-water mixture into the anoxic tank.
The coagulation tank is divided into two grids, the two grids are respectively provided with a coagulation stirrer and a flocculation coagulation stirrer, an aluminum salt dosing barrel is arranged outside the coagulation tank, after the salt dosing barrel is dosed, the salt dosing barrel is used for stirring and removing phosphorus in water through the coagulation stirrer, and the salt dosing barrel is provided with an aluminum salt stirrer and an aluminum salt dosing metering pump;
a flocculating agent dosing barrel is arranged outside the coagulation tank, after being dosed, the flocculating agent dosing barrel is stirred by a flocculation coagulation stirrer and flocculates, and the flocculating agent dosing barrel is provided with a flocculating agent stirrer and a flocculating agent dosing metering pump;
and forming large-particle pollutants after flocculation in the coagulation tank, and entering a sedimentation tank.
The sedimentation tank sets up sedimentation tank play water weir, sedimentation tank pipe chute, sedimentation tank bagger, through setting up the sedimentation tank pipe chute separation large granule pollutant at the sedimentation tank middle part, and the mud after the separation sinks along the sedimentation tank pipe chute, and clear water discharge sedimentation tank sets up the sedimentation tank bagger bottom the sedimentation tank, and the sedimentation is in the sedimentation tank bagger after mud falls.
A method for treating the water body of light and medium eutrophication artificial landscape lake comprises the following steps;
introducing the light and medium eutrophication artificial landscape lake water into an anoxic pond for reaction, and then allowing the obtained sewage to flow into an aerobic pond;
automatically flowing the muddy water after the reaction in the aerobic tank to a pre-settling tank for settling;
enabling clear liquid at the upper part of the pre-settling tank to automatically flow into a coagulation tank through the opening of the tank wall;
pumping the mud-water mixture at the bottom of the pre-settling tank into an anoxic tank;
the pre-precipitated upper clear liquid flows into a coagulation tank for coagulation reaction to form mud-water mixed liquid;
after the sludge-water mixed liquid flows into a sedimentation tank, separating sludge from clear water;
the separated clear water is disinfected by an ultraviolet disinfection device and then discharged into lake water again.
The anaerobic tank is internally provided with zymophyte, denitrifying microorganism and suspension carrier, the mixing stirrer is arranged in the anaerobic tank, the suspension carrier has the specific gravity of 0.94-0.98 and the porosity of more than 90 percent, the aerobic tank is internally provided with activated sludge capable of removing organic matters and ammonia nitrogen and the suspension carrier attached with a biological membrane, the suspension carrier has the specific gravity of 0.94-0.98 and the porosity of more than 90 percent.
The coagulating basin is divided into two lattices, a stirrer is arranged in the two lattices, a dosing device is arranged outside the coagulating basin, aluminum salt and a flocculating agent are added through a metering pump and a pipeline, the aluminum salt is added in the first lattice, and the flocculating agent is added in the second lattice.
The sedimentation tank adopts an inclined tube sedimentation tank, the angle of the inclined tube is 60-70 degrees, and the length of the inclined tube is 800-1000 mm.
The principle of the invention is as follows:
1. the pump pumps the artificial lake water into the MBBR anoxic tank, and because more algae and aquatic plants exist in the lake water, the separation net is arranged in front of the pump, so that the algae and the aquatic plants are prevented from entering. The suspension carrier is arranged in the anoxic tank to increase the sludge concentration, the lake water and the muddy water mixed liquid which flows back from the preliminary sedimentation tank are mixed under the action of the stirrer, and nitrate nitrogen brought in the backflow mixed liquid is removed through denitrification by using denitrifying bacteria on the suspension carrier and in the sludge in the tank.
2. And sewage after the anoxic reaction flows into the MBBR aerobic tank through a bottom perforated baffle, organic matters in the inlet water are removed by a biomembrane and suspended activated sludge on a high-efficiency suspended carrier in the tank, and the ammonia nitrogen is nitrified into nitrate nitrogen. A fan is matched to supply oxygen to the aerobic tank through a perforated aeration pipe at the bottom of the aerobic tank.
3, the muddy water after the reaction of the MBBR aerobic tank automatically flows to the pre-settling tank through a perforated pipe at the water outlet side of the MBBR aerobic tank, the muddy water is primarily separated by self weight after water distribution through the central guide cylinder, and the clear liquid at the upper part automatically flows into the coagulation tank through an opening on the tank wall. The bottom of the pre-settling tank is provided with a reflux pump for pumping the mud-water mixed liquid into the anoxic tank.
4. The pre-settled sewage flows into a coagulation tank for coagulation reaction, and aluminum salt is added into the coagulation tank to react with phosphorus in water: al (aluminum)3++PO4 3-→AlPO4And removing phosphorus in the water by chemical precipitation during the production of aluminum phosphate. And adding a flocculating agent to help the generated precipitate to be collected to form large-particle pollutants.
5. The sedimentation tank adopts an inclined tube separation tank form, so that the sedimentation efficiency can be greatly increased, and the sedimentation time can be shortened. The sludge-water mixed liquid is separated by the inclined pipe arranged in the middle of the sedimentation tank, the sludge sinks along the inclined pipe, and clear water flows into the top overflow groove and is discharged. The bottom of the inclined tube separation pool is provided with a mud bucket, and sludge is deposited in the mud bucket after falling down and is discharged periodically.
6. And (3) separating mud and water in the precipitated water, disinfecting the separated clear water by ultraviolet rays to reach the V-class water in GB3838-2002 'surface water environmental quality standard', wherein the clear water is suitable for the water quality standard of agricultural water areas and water areas required by general landscapes, and returning the treated sewage to the water body again.
7. The anaerobic tank is internally provided with zymophyte, denitrifying microorganism and suspension carrier, and a mixing stirrer, wherein the suspension carrier has the specific gravity of 0.94-0.98 and the void ratio of more than 90%.
8. The aerobic tank is internally provided with activated sludge capable of removing organic matters and ammonia nitrogen and a suspension carrier attached with a biological membrane, wherein the specific gravity of the suspension carrier is 0.94-0.98, and the voidage is more than 90%.
9. The pre-settling tank is connected with the anoxic tank through a pump and a pipeline, and part of the mud-water mixed liquid flows back to the anoxic tank.
10. The coagulation tank is divided into two grids, a stirrer is arranged in the coagulation tank, and the coagulation tank is coagulated mechanically and has high coagulation efficiency. And the aluminum salt and the flocculating agent are added through a metering pump and a pipeline, the aluminum salt is added in the first grid, and the flocculating agent is added in the second grid.
11. The sedimentation tank adopts an inclined tube sedimentation tank, the angle of the inclined tube is 60-70 degrees, and the length of the inclined tube is 800-1000 mm.
12. The disinfection adopts an ultraviolet disinfection method, and the ultraviolet disinfection device is utilized to disinfect the effluent.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and the description is given here only for clarity, and those skilled in the art should integrate the description, and the embodiments may be combined appropriately to form other embodiments understood by those skilled in the art.
Claims (10)
1. The device for treating the water body of the light and medium eutrophication artificial landscape lake is characterized by comprising an anoxic pond, an aerobic pond, a pre-sedimentation pond, a coagulation pond, a sedimentation pond and an ultraviolet disinfection device;
the anoxic tank is used for introducing light and medium eutrophication artificial landscape lake water into the anoxic tank for anoxic reaction to obtain sewage after the reaction;
the aerobic tank is used for carrying out aerobic reaction on the sewage to obtain muddy water after the aerobic reaction;
the pre-settling tank is used for pre-settling the muddy water to obtain a mixture of clear liquid and muddy water; a reflux pump is arranged at the bottom of the pre-settling tank, and the mud-water mixture is pumped into the anoxic tank;
the coagulation tank is used for coagulating the clear liquid to form a mud-water mixed liquid;
the sedimentation tank is used for settling the mud-water mixed liquid to obtain sludge and clear water, and the sludge is settled at the bottom of the sedimentation tank and is periodically cleaned;
the ultraviolet disinfection device is used for disinfecting clean water, and the disinfected clean water is discharged into lake water.
2. The equipment for treating the water body of the mild-moderate eutrophic artificial landscape lake of claim 1, wherein an anoxic pond stirrer and an MBBR suspension carrier are arranged in the anoxic pond, the anoxic pond stirrer is used for fully mixing sewage in the anoxic pond, a perforated plate is arranged between the anoxic pond and the aerobic pond, and the sewage after reaction in the anoxic pond enters the aerobic pond through the perforated plate.
3. The apparatus as claimed in claim 2, wherein the aerobic tank is provided with a perforated aeration pipe, an aerobic tank blower, and MBBR suspended carriers, the aerobic tank blower supplies oxygen to the aerobic tank through the perforated aeration pipe at the bottom of the aerobic tank, a perforated pipe is provided between the aerobic tank and the pre-settling tank, and the muddy water after the reaction in the aerobic tank enters the pre-settling tank through the perforated pipe.
4. The equipment for treating the light and medium eutrophication artificial landscape lake water body according to claim 3, wherein a guide cylinder and a reflux pump are arranged in the pre-sedimentation tank, the pre-sedimentation tank is subjected to initial separation of mud and water by using self weight after being distributed with water through the guide cylinder, the clear liquid at the upper part automatically flows into the coagulation tank through an opening on the tank wall, and the reflux pump pumps the mud-water mixture into the anoxic tank.
5. The equipment for treating light and medium eutrophication artificial landscape lake water bodies according to claim 4, wherein the coagulation tank is divided into two grids, the two grids are respectively provided with a coagulation stirrer and a flocculation coagulation stirrer, an aluminum salt dosing barrel is arranged outside the coagulation tank, the salt dosing barrel is stirred by the coagulation stirrer after dosing and removes phosphorus in water, and the salt dosing barrel is provided with an aluminum salt stirrer and an aluminum salt dosing metering pump;
a flocculating agent dosing barrel is arranged outside the coagulation tank, the flocculating agent dosing barrel is stirred by a flocculation coagulation stirrer after dosing, and flocculation is carried out, and the flocculating agent dosing barrel is provided with a flocculating agent stirrer and a flocculating agent dosing metering pump;
after flocculation in the coagulation tank, large-particle pollutants are formed and enter a sedimentation tank.
6. The device for treating the water body in the light and medium eutrophic artificial landscape lake of claim 5, wherein the sedimentation tank is provided with a sedimentation tank effluent weir, a sedimentation tank inclined tube and a sedimentation tank mud bucket, large-particle pollutants are separated by the sedimentation tank inclined tube arranged in the middle of the sedimentation tank, the separated sludge sinks along the sedimentation tank inclined tube, clear water is discharged out of the sedimentation tank, the sedimentation tank mud bucket is arranged at the bottom of the sedimentation tank, and the sludge is deposited in the sedimentation tank mud bucket after falling.
7. A method for treating the water bodies of the light and medium eutrophication artificial landscape lakes is characterized by comprising the following steps;
introducing light and medium eutrophication artificial landscape lake water into an anoxic pond for reaction, and then enabling obtained sewage to flow into an aerobic pond;
automatically flowing the muddy water after the reaction in the aerobic tank to a pre-settling tank for settling;
enabling clear liquid at the upper part of the pre-settling tank to flow into the coagulation tank automatically through the opening of the tank wall;
pumping the mud-water mixture at the bottom of the preliminary sedimentation tank into an anoxic tank;
the pre-precipitated upper clear liquid flows into a coagulation tank for coagulation reaction to form mud-water mixed liquid;
after the mud-water mixed liquid flows into a sedimentation tank, separating sludge from clear water;
the separated clear water is disinfected by an ultraviolet disinfection device and then is discharged into lake water again.
8. The method as claimed in claim 7, wherein the anoxic tank contains fermentation tubes, denitrifying microorganisms and suspending carriers, the mixing agitator, the suspending carriers have a specific gravity of 0.94-0.98 and a void ratio of > 90%, the aerobic tank contains activated sludge for removing organic matters and ammonia nitrogen and suspending carriers for attaching biological membranes, the suspending carriers have a specific gravity of 0.94-0.98 and a void ratio of > 90%.
9. The method for treating light and medium eutrophication artificial landscape lake water bodies according to claim 7, wherein the coagulation tank is divided into two grids, a stirrer is arranged in each grid, a dosing device is arranged outside the coagulation tank, aluminum salt and a flocculating agent are dosed through a metering pump and a pipeline, the aluminum salt is dosed in the first grid, and the flocculating agent is dosed in the second grid.
10. The method for treating the water bodies of the light and medium eutrophic artificial landscape lakes as claimed in claim 7, wherein the sedimentation tank adopts an inclined tube sedimentation tank, the angle of the inclined tube is 60-70 degrees, and the length of the inclined tube is 800-1000 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461169.1A CN114772858A (en) | 2022-04-28 | 2022-04-28 | Equipment and method for treating water body of light and medium eutrophication artificial landscape lake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210461169.1A CN114772858A (en) | 2022-04-28 | 2022-04-28 | Equipment and method for treating water body of light and medium eutrophication artificial landscape lake |
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| CN114772858A true CN114772858A (en) | 2022-07-22 |
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| CN202210461169.1A Withdrawn CN114772858A (en) | 2022-04-28 | 2022-04-28 | Equipment and method for treating water body of light and medium eutrophication artificial landscape lake |
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| CN (1) | CN114772858A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207243683U (en) * | 2017-08-18 | 2018-04-17 | 北京博大水务有限公司 | Urban sewage treating device |
| CN113264645A (en) * | 2021-06-09 | 2021-08-17 | 中铁环境科技工程有限公司 | Domestic sewage treatment system and treatment method |
| CN217437983U (en) * | 2022-04-28 | 2022-09-16 | 中海环境科技(上海）股份有限公司 | Light and medium eutrophication artificial landscape lake water body treatment equipment |
-
2022
- 2022-04-28 CN CN202210461169.1A patent/CN114772858A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207243683U (en) * | 2017-08-18 | 2018-04-17 | 北京博大水务有限公司 | Urban sewage treating device |
| CN113264645A (en) * | 2021-06-09 | 2021-08-17 | 中铁环境科技工程有限公司 | Domestic sewage treatment system and treatment method |
| CN217437983U (en) * | 2022-04-28 | 2022-09-16 | 中海环境科技(上海）股份有限公司 | Light and medium eutrophication artificial landscape lake water body treatment equipment |
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