CN105174454A - Integrated nitrogen and phosphorus removal sewage treatment device - Google Patents
Integrated nitrogen and phosphorus removal sewage treatment device Download PDFInfo
- Publication number
- CN105174454A CN105174454A CN201510574708.2A CN201510574708A CN105174454A CN 105174454 A CN105174454 A CN 105174454A CN 201510574708 A CN201510574708 A CN 201510574708A CN 105174454 A CN105174454 A CN 105174454A
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- China
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- room
- anaerobic reaction
- hypoxia response
- valve
- water inlet
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- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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[P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 29
- 239000011574 phosphorus Substances 0.000 title claims abstract description 29
- 239000010865 sewage Substances 0.000 title claims abstract description 29
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- 239000002699 waste material Substances 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
The invention provides an integrated nitrogen and phosphorus removal sewage treatment device, which is mainly characterized in that an anaerobic reaction chamber is located at the front end of a hypoxia reaction chamber; a stirrer is arranged in the anaerobic reaction chamber; a water inlet pipe is arranged in the anaerobic reaction chamber and the hypoxia reaction chamber; the water inlet pipe is provided with a hypoxia reaction chamber valve and an anaerobic reaction chamber valve; the hypoxia reaction chamber valve is connected with the water inlet pipe of the hypoxia reaction chamber; the anaerobic reaction chamber valve is connected with the water inlet pipe of the anaerobic reaction chamber; a sludge return pipe of the anaerobic reaction chamber is located at the side faces of the lower parts of the hypoxia reaction chamber and the anaerobic reaction chamber; the sludge return pipe of the anaerobic reaction chamber is provided with a sludge return valve, and the sludge return valve is used for controlling sludge return flow rate. The integrated nitrogen and phosphorus removal sewage treatment device has the advantages that sludge returns to the anaerobic reaction chamber from the hypoxia reaction chamber, thus, an environment in favor of phosphorus-accumulating bacteria and anaerobic phosphorus release is created, and the biological selection of the phosphorus-accumulating bacteria is enhanced, therefore the high-efficiency phosphorus removal is realized; the integrated nitrogen and phosphorus removal sewage treatment device is low in operating cost, and can be widely applied to sewage treatment in medium-and small-sized cities and towns and countries, and highway service areas.
Description
Technical field
The present invention relates to a kind of denitrogenation dephosphorizing waste disposal plant, and denitrogenation dephosphorizing sewage water treatment method.
Background technology
Along with Chinese Economy Development, environment pollution scope constantly expands, the medium and small water pollution source of One's name is legion, because the factor restrictions such as geographical position are difficult to be incorporated to urban pipe network, needs treatment in situ.These medium and small water pollution source comprise Small Urban and rural sewage treatment, Expressway Service, tourist attraction, the new residential area of the combination area of city and country, sanatorium, independent villa quarter, airport and army post etc., the sewage disposal technology device that Structure of need is compact, floor space is little, operation is convenient, effluent quality is high.Nitrogen and phosphorus are biological important nutrition sources.After the phosphorus-containing wastewater that the mankind discharge enters lake, the algae in lake can be made to obtain the nutrition and sharp increase enriched, occur a large amount of algae in water body, water hypoxia, water quality deterioration, very large harm is produced to ecotope and HUMAN HEALTH.The natural water body of China is serious by nitrogen and phosphorus pollution, and particularly the eutrophication of the water body such as Basin of Huaihe River, Taihu Lake, Chaohu, Dian Chi is serious.The pollution of nitrogen, phosphorus causes very serious harm to China's water body environment.Former patent of invention number is CN102249479B " a kind of sewage treatment facility and treatment process ", compact construction, and floor space is little, is applicable to dispersed middle-size and small-size sewage disposal, can realize particulate matter, organic pollutant and ammonia nitrogen in effective degradation of sewage.But tp removal rate is lower, about 30%, if by total phosphorus in town domestic sewage (TP) content 4 ~ 8mg/L, water outlet, higher than 1mg/L, can not reach 1 grade of A limit value of China national urban wastewater treatment firm pollutant emission standard (GB18918-2002).
Summary of the invention
The object of the invention is the deficiency for existing in above-mentioned technology, a kind of integral type denitrogenation dephosphorizing waste disposal plant is provided. the object of the present invention is achieved like this, comprises hypoxia response room, anaerobic reaction room, segmental influent device and anaerobic reaction room sludge reflux pipeline.It is characterized in that, anaerobic reaction room is positioned at the front end of hypoxia response room, agitator is placed in anaerobic reaction indoor, for complete mixing anaerobic reaction indoor liquid, water inlet pipe is arranged in anaerobic reaction room and hypoxia response room, water inlet pipe is provided with hypoxia response room valve and anaerobic reaction room valve, the valve of hypoxia response room is connected with the water inlet pipe of hypoxia response room, the valve of anaerobic reaction room is connected with the water inlet pipe of anaerobic reaction room, pending sewage enters waste disposal plant by water inlet pipe, the discharge of sewage entering anaerobic reaction room and hypoxia response room, middle part is controlled respectively by anaerobism valve and anoxic valve, then anaerobic reaction room is flowed into by anaerobic reaction room water inlet pipe respectively, hypoxia response room is flowed into by hypoxia response room water inlet pipe.Anaerobism and anoxic discharge orifice are between anaerobic reaction room and hypoxia response room, and sewage, after anaerobic reaction room has been reacted, enters hypoxia response room by anaerobism and anoxic discharge orifice.Anaerobic reaction room mud return line is positioned at hypoxia response room and anaerobic reaction room lower side, and anaerobic reaction room mud return line is provided with sludge reflux valve, for controlling sludge reflux amount.
Can realize efficient biological phosphate-eliminating further, removal efficiency is the highest is greater than 90%, and water outlet total phosphorus (TP) concentration, lower than 0.5mg/L, reaches 1 grade of A standard limited value that national urban wastewater treatment firm pollutant emission standard (GB18918-2002) specifies.
Anaerobic reaction room is positioned at the front end of hypoxia response room, and its vital role is as microorganism selector switch, in conjunction with the aerobic reaction room enrichment polyP bacteria of rear end.In anaerobic reaction room, complete anaerobic phosphorus release, in aeration zone, aerobic reaction room below, polyP bacteria can absorb the phosphorus dissolved in water by the growth needs of excess many times own, becomes active sludge.In the excess sludge of being discharged by bioselection, the content of total phosphorus (TP) can reach 6 ~ 7%.Realize like this can reducing to below 0.5mg/L in the sewage after biological phosphate-eliminating process, reach standard limited value index.
Due to the nitrate nitrogen (NO in returned sluge water
3-N) denitrification can be produced and anaerobic phosphorus release fights for carbon source, and the oxygen in water (DO) that refluxes is too high, will destroy anaerobic environment, and affect adversely for phosphor-removing effect.Therefore, the present invention adopts the returned sluge of mud as anaerobic reaction room of hypoxia response room, middle part, is conducive to eliminating nitrate nitrogen (NO
3-N) and dissolved oxygen (DO) on the impact of phosphor-removing effect, thus realize high-level efficiency dephosphorization, its total phosphorus removal efficiency can reach more than 90%.
Because denitrification process and anaerobic phosphorus release all need organic carbon source (BOD), therefore there is the contradiction of two kinds of biological process contention carbon sources.Water inlet is divided into two sections (import of anaerobic reaction room and the imports of hypoxia response room) by the present invention, regulates water inlet ratio, like this, meet the organic carbon source needed for anaerobic phosphorus release and denitrification simultaneously, realize high-efficient denitrification and dephosphorization by valve.
The invention has the beneficial effects as follows, compact construction, floor space is little, and cost is low, can not only realize particulate matter, organic pollutant in effective degradation of sewage, ammonia nitrogen, total nitrogen, efficiently can also remove total phosphorus.Total tp removal rate is the highest is greater than 90%, thus makes effluent quality reach one-level A effluent index in CNS (GB18918-2002).
Adopt segmental influent method, solve the contradiction of anti-nitration reaction and anaerobic phosphorus release process contention organic carbon source, thus reach the effect of efficient denitrification, dephosphorization simultaneously.
From hypoxia response pond returned sluge to anaerobic reaction room, nitrate nitrogen (NO can be avoided
3-N) and dissolved oxygen (DO) to the interference of polyP bacteria anaerobic phosphorus release process, create and be conducive to the growing environment of polyP bacteria, thus the efficient polyP bacteria of enrichment, effectively improve dephosphorization efficiency by using.
Adopt high-efficiency biological nitrogen and phosphorus removal technique, do not need to add chemical agent, running cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention
Fig. 2 is the side-view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described, from Fig. 1 and Fig. 2, and anaerobic reaction room 1, agitator 2, water inlet pipe, 3, anaerobic reaction room inlet valve 4, hypoxia response room inlet valve 5, anaerobic reaction room water inlet pipe 6, hypoxia response room water inlet pipe 7, anaerobism and anoxic discharge orifice 8, anaerobic reaction room mud return line 9, anaerobic sludge return valve 10, hypoxia response room 11, aerobic reaction room 12, filters clarifying chamber 13.
Anaerobic reaction room 1 is positioned at the front end of hypoxia response room 11.Agitator 2 is placed in anaerobic reaction indoor, for liquid in complete mixing anaerobic reaction chamber 1, water inlet pipe 3 is arranged on anaerobic reaction room 1 and 11 li, hypoxia response room, water inlet pipe 3 is provided with anaerobic reaction room valve 4 and hypoxia response room valve 5, anaerobic reaction room valve 4 is connected with the water inlet pipe 6 of anaerobic reaction room, hypoxia response room valve 5 is connected with hypoxia response room water inlet pipe 7, pending sewage enters waste disposal plant by water inlet pipe 3, the discharge of sewage entering anaerobic reaction room 1 and hypoxia response room, middle part 11 is controlled respectively by anaerobism valve 4 and anoxic valve 5, then anaerobic reaction room 11 is flowed into by anaerobic reaction room water inlet pipe 6 respectively, hypoxia response room 11 is flowed into by hypoxia response room water inlet pipe 7.Anaerobism and anoxic discharge orifice 8 are between anaerobic reaction room 1 and hypoxia response room 11, and sewage, after anaerobic reaction room 1 has been reacted, enters hypoxia response room 11 by anaerobism and anoxic discharge orifice 8.Anaerobic reaction room mud return line 9 is positioned at hypoxia response room 11 and anaerobic reaction room 1 lower side, and anaerobic reaction room mud return line 9 is provided with sludge reflux valve 10, for controlling sludge reflux amount.
Anaerobic reaction room 1 is positioned at device front end, is a rectangular parallelepiped device, and near hypoxia response room 11, size is about the half of hypoxia response room 11.Anaerobic reaction room 1 and hypoxia response room 11, aerobic reaction room 12 and filter settling pond 13 and be connected as a single entity, shell can adopt steel plate, PVC, glass reinforced plastic, cement plate or other materials to make.
In anaerobic reaction room 1, assemble one or several agitator 2, agitator 2 is uniformly mixed sewage and active sludge under being placed in water level.
Wastewater influent is by water inlet pipe 3 introducing device, and then shunting enters anaerobic reaction room water inlet pipe 6 and hypoxia response room water inlet pipe 7.Part sewage enters anaerobic reaction room 1 by anaerobic reaction room water inlet pipe 6, and import is positioned under liquid level; Another part sewage then enters hypoxia response room 11 by hypoxia response room water inlet pipe 7.Anaerobic reaction room inlet valve 4 is arranged on water inlet pipe 6 front end, anaerobic reaction room, controls the discharge of sewage entering anaerobic reaction room 1.Hypoxia response room inlet valve 5 is arranged on hypoxia response room water inlet pipe 7, for controlling the discharge of sewage entering hypoxia response room 11.By regulating the size of anaerobic reaction room inlet valve 4 and hypoxia response room inlet valve 5, ratio and the size of the organic carbon source (BOD) entering anaerobic reaction room 1 and hypoxia response room 11 can be regulated, thus ensure carrying out smoothly of anaerobic phosphorus release and denitrification reaction, and optimization process flow.Valve 4 and valve 5 can use the valve of the regulating flow quantity of any one brand.
Anaerobism and anoxic discharge orifice 8 are positioned at the middle and lower part that anaerobic reaction room 1 and hypoxia response room 11 have interface, and hole shape can be circle, square or other shapes.Mixed solution in anaerobic reaction room 1 enters hypoxia response room 11 by this hole.Sewage fully mixes in anaerobic reaction room 1 with active sludge, complete after anaerobic phosphorus release reacts, and enters hypoxia response room 11, to carry out follow-up anti-nitration reaction by this discharge orifice.
Because the denitrification process of denitrogenation and anaerobic phosphorus release all need organic carbon source (BOD), the present invention adopts two-stage water technique, anaerobic reaction room wastewater influent is divided into intake and the water inlet of hypoxia response room, actual needs water inlet ratio is regulated by anaerobic reaction room valve 4 and hypoxia response room valve 5, control organic carbon source (BOD) amount entering anaerobic reaction room 1 and hypoxia response room 11, thus meet anaerobic phosphorus release and denitrification simultaneously, realize high-efficient denitrification and dephosphorization.
Anaerobic reaction room mud return line 9 is positioned at hypoxia response room 11 and anaerobic reaction room 1 lower side, connects hypoxia response room 11 and anaerobic reaction room 12.Mud return line 9 import of anaerobic reaction room and the side lower being positioned at hypoxia response room 11, outlet is positioned at anaerobic reaction room 1 side lower.Mud flows into anaerobic reaction room 1 by hypoxia response room 11 by anaerobic reaction room mud return line 9, and its flow is regulated by anaerobic sludge return valve 10.Sludge reflux can adopt the pump of the exercisable brand of any one to realize.
By sludge reflux in hypoxia response room 11 to anaerobic reaction room 1, not only achieve the circulation of polyP bacteria mud in reactor, and due to dissolved oxygen (DO) and nitrate nitrogen (NO
3-N) concentration is low, and create the environment of the anaerobic phosphorus release being conducive to polyP bacteria, enhance the bioselection of polyP bacteria, thus realize efficient dephosphorization.
Claims (4)
1. an integral type denitrogenation dephosphorizing waste disposal plant, comprise anaerobic reaction, hypoxia response room, agitator, water inlet pipe, hypoxia response room valve and anaerobic reaction room valve, aerobic reaction room and filtration settling pond, it is characterized in that, anaerobic reaction room is positioned at the front end that anaerobic reaction room, hypoxia response room is positioned at hypoxia response room, agitator is placed in anaerobic reaction indoor, for complete mixing anaerobic reaction indoor liquid, water inlet pipe is arranged in anaerobic reaction room and hypoxia response room, water inlet pipe is provided with hypoxia response room valve and anaerobic reaction room valve, the valve of hypoxia response room is connected with the water inlet pipe of hypoxia response room, the valve of anaerobic reaction room is connected with the water inlet pipe of anaerobic reaction room, pending sewage enters waste disposal plant by water inlet pipe, the discharge of sewage entering anaerobic reaction room and hypoxia response room, middle part is controlled respectively by anaerobism valve and anoxic valve, then anaerobic reaction room is flowed into by anaerobic reaction room water inlet pipe respectively, hypoxia response room is flowed into by hypoxia response room water inlet pipe, anaerobism and anoxic discharge orifice are between anaerobic reaction room and hypoxia response room, sewage is after anaerobic reaction room has been reacted, hypoxia response room is entered by anaerobism and anoxic discharge orifice, anaerobic reaction room mud return line is positioned at hypoxia response room and anaerobic reaction room lower side, anaerobic reaction room mud return line is provided with sludge reflux valve, for controlling sludge reflux amount.
2. a kind of integral type denitrogenation dephosphorizing waste disposal plant according to claim 1, it is characterized in that, anaerobic reaction room and hypoxia response room, aerobic reaction room and filter settling pond and be connected as a single entity, shell adopts steel plate or PVC material or glass reinforced plastic or cement plate material to make.
3. a kind of integral type denitrogenation dephosphorizing waste disposal plant according to claim 1, is characterized in that, agitator uses one or more.
4. a kind of integral type denitrogenation dephosphorizing waste disposal plant according to claim 1, it is characterized in that, use said apparatus, adopt two-stage water technique, wastewater influent be divided into anaerobic reaction room to intake and the water inlet of hypoxia response room, by anaerobic reaction room valve and hypoxia response room valve regulated actual needs water inlet ratio, control organic carbon source (BOD) amount entering anaerobic reaction room and hypoxia response room, thus meet anaerobic phosphorus release and denitrification simultaneously, realize high-efficient denitrification and dephosphorization.
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Application publication date: 20151223 |