CN101549906A - Method for denitrification dephosphorization filtering synchronously and device thereof - Google Patents
Method for denitrification dephosphorization filtering synchronously and device thereof Download PDFInfo
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- CN101549906A CN101549906A CNA2009100621913A CN200910062191A CN101549906A CN 101549906 A CN101549906 A CN 101549906A CN A2009100621913 A CNA2009100621913 A CN A2009100621913A CN 200910062191 A CN200910062191 A CN 200910062191A CN 101549906 A CN101549906 A CN 101549906A
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Abstract
The present invention provides a device for denitrification dephosphorization filtering synchronously which includes: an advanced treatment lifting pump room (1), a water inlet pipe of the advanced treatment lifting pump room (1) connects with a secondary treatment water outlet of sewage plant, an water outlet pipe (3) of the advanced treatment lifting pump room (1) connects with a combined device (4), carbon source and chemical dephosphorization medicament quantitative casting device connects with the combined device (4) through pipeline, the combined device (4) connects with an air water backwashing filtering pool (5) through pipeline, a water outlet of the air water backwashing filtering pool connects with an water outlet well (6) through pipeline. The device has advantages that: advanced treating secondary treatment yielding water with short flow, low construction investment and operating cost, and high medicament high-usage. The treated water reaches a first A standard in GB18918-2002, and TN is stable less than 10 mg/L, the average removing ratio is 42.4%; TP is stable less than 0.3 mg/L, and average removing ratio is 77.7%.
Description
Technical field
The present invention relates to technical field of resource environments, a kind of specifically filter method and device that adds synchronous enhanced biological denitrogenation of medicament and chemical dephosphorization.
Background technology
Along with the aggravation that The development in society and economy and water pollute, the improvement of water surrounding and protection more and more are subject to people's attention.The denitrification dephosphorization technique that turns to purpose with the control water eutrophication is one of focus of current water pollution control area research, and low carbon source urban sewage is because the nutritive props imbalance becomes the difficult point that denitrification dephosphorization technique is studied.Sewage also contains pollution substances such as a considerable amount of nitrogen, phosphorus usually in the water outlet after traditional second-stage treatment.Municipal effluent carries out advanced treatment, further reduces Pollutant levels such as nitrogen in the water outlet, phosphorus, and water outlet discharging or as reclaimed wastewater reuse to accelerating water pollution control, guarantees that each basin water Environmental Health development has crucial meaning.
The denitrogenation dephosphorizing of municipal effluent mainly contains biological process and chemical oxidization method.The biological process denitrogenation dephosphorizing must possess certain carbon-nitrogen ratio and carbon-phosphorus ratio, otherwise processing efficiency will be affected.
Because environment and economic reasons, biological process is mainly adopted in denitrogenation.For low carbon source urban sewage, secondary treatment yielding water contains in a large number usually not by denitrifying nitrogen, further reduce the concentration of nitrogen, need add carbon source enhanced biological denitrification rate.Add carbon source generally have in second-stage treatment, add with advanced treatment in add dual mode, the former reagent consumption amount is big, working cost is higher; The latter increases certain construction investment expense, but reagent consumption is lower, and effluent quality and coverage ratio are higher, is the present common practice of developed country.
Sewage to low carbon source carries out biological phosphate-eliminating, owing at first must guarantee the carbon source of biological denitrificaion, therefore, when biological phosphate-eliminating can not reach requirement, must be aided with chemical dephosphorization.Chemical dephosphorization generally has preposition, synchronous and rearmounted method.Preposition method added amount of chemical is big, and the sludge quantity of generation is many, and working cost is higher; The utilization ratio that adds medicament with footwork is lower, and influential to the own operation meeting of carrying out a biological disposal upon, and especially adding aluminium salt influences bigger; And rearmounted method employing adds the chemical dephosphorization medicament after conventional sewage second-level is handled, and added amount of chemical is few, and effect is remarkable, although need to increase construction cost, remains the domestic and international at present main method that adopts.
After the low carbon source urban sewage second-stage treatment, nitrogen, the phosphorus of water outlet are had relatively high expectations, and carry out a biological disposal upon in the time of can not satisfying the demand, be to add the nitrogen advanced treatment apparatus and the phosphorus advanced treatment apparatus series connection that adds the chemical dephosphorization medicament of carbon source generally speaking, but this mode exists treatment scheme long, investment and working cost height, shortcomings such as operational management complexity.
Summary of the invention
The objective of the invention is to develop a kind of shortened process, reduce construction investment and working cost, be convenient to operational management, in same filter tank, realize the synchronous denitrification dephosphorizing filter method and the device of synchronous denitrification dephosphorizing.
Synchronous denitrification dephosphorizing filter method of the present invention, its step is as follows:
1. the Sewage Plant secondary treatment yielding water is promoted to through pump and mixes in the facility, or directly is promoted in the air-water backwash filter;
2. carbon source, chemical dephosphorization medicament quantitatively drop into and mix in the facility, or the mode that adds before the employing pump, quantitatively drop in lift pump room suction well or the water inlet pipe, carbon source and chemical dephosphorization added amount of chemical are determined according to the water quality situation, typical case's added amount of chemical is: carbon source (in methyl alcohol) dosage 10-25mg/L, the chemical dephosphorization medicament is (with Fe
3+Meter) dosage 5-10mg/L;
3. pending water and medicament enter in the air-water backwash filter and filter after mixing facility or lift pump thorough mixing, filter back water discharging or as reclaimed wastewater reuse.
Synchronous denitrification dephosphorizing filtration unit of the present invention, comprise: advanced treatment lift pump room 1, the water inlet pipe 2 of advanced treatment lift pump room 1 is connected with the Sewage Plant secondary treatment yielding water, the rising pipe 3 of advanced treatment lift pump room 1 links to each other with mixing facility 4, carbon source, the quantitative throwing device of chemical dephosphorization medicament links to each other with mixing facility 4 respectively by pipeline, mixing facility 4 links to each other with air-water backwash filter 5 by pipeline, air-water backwash filter 5 water outlets link to each other with wet well 6 by pipeline, air-water backwash filter 5 is gone back and air water recoiling device water inlet pipe 8, inlet pipe 9 and back flushing water shoot 10 link to each other, and filter back water discharges or connect reclaimed wastewater reuse equipment from wet well 6 by pipeline 7; Perhaps comprise: advanced treatment lift pump room 1, the water inlet pipe 2 of advanced treatment lift pump room 1 is connected with the Sewage Plant secondary treatment yielding water, carbon source, the quantitative throwing device of chemical dephosphorization medicament inserts the suction well (or water inlet pipe) of advanced treatment lift pump room 1 by pipeline, the rising pipe 3 of advanced treatment lift pump room 1 links to each other with air-water backwash filter 5, air-water backwash filter 5 water outlets link to each other with wet well 6 by pipeline, air-water backwash filter 5 is gone back and air water recoiling device water inlet pipe 8, inlet pipe 9 and back flushing water shoot 10 link to each other, and filter back water discharges or connect reclaimed wastewater reuse equipment from wet well 6 by pipeline 7.
Described air-water backwash filter 5 adopts quartz sand as homogeneous filtering material, and its filtering velocity is 3-10m/h, and the recoil cycle is 12-48h, and thickness of filter bed is 1.0-2.0m.
Add carbon source and chemical dephosphorization medicament mixing after-filtration simultaneously, because the biomembranous denitrification of filter material surface, and PO
4 3--P and metal ion are (as Fe
3+) reaction generation precipitation threshold material, under biological chemistry and the physicochemical synergy, nitrogen, phosphorus all have removal effect preferably in the filter tank.The filter tank is by back flushing, and flush away trapped substance and unnecessary microbial film are realized the regeneration in filter tank.
The advantage of synchronous denitrification dephosphorizing filter method of the present invention and device is: synchronous denitrification dephosphorizing filter tank advanced treating secondary treatment yielding water, and treatment scheme is short, and construction investment and working cost are low, medicament utilization ratio height, the processing efficiency height takes up an area of and lacks, and operational management is convenient.When certain Sewage Plant adopted this technology to demonstrate research, the water outlet after the processing reached the one-level A standard among the GB18918-2002, and TN is stable less than 10mg/L, and average removal rate is 42.4%; TP is stable less than 0.3mg/L, and average removal rate is 77.7%.
The synchronous denitrification dephosphorizing filter tank demonstration operation result of 20,000 tons of/day scales of certain Sewage Plant
Description of drawings
Fig. 1 is the process flow sheet of synchronous denitrification dephosphorizing filter method.
Fig. 2 is the structural representation of synchronous denitrification dephosphorizing filtration unit.
Embodiment
Embodiment one
According to shown in Figure 1, a kind of synchronous denitrification dephosphorizing filter method, its step is as follows:
1. the Sewage Plant secondary treatment yielding water is promoted in the mixing tank through pump;
2. utilize volume pump that carbon source, chemical dephosphorization medicament are dropped in the mixing tank, its dosage is: carbon source-methanol dosage 10mg/L, chemical dephosphorization medicament-poly-iron dosage 5mg/L;
3. pending water and medicament behind the thorough mixing, enter in the air-water backwash filter and filter in mixing tank, filter back water discharging or as reclaimed wastewater reuse; Air-water backwash filter adopts the quartz sand homogeneous filtering material, and its filtering velocity is 8m/h, and the recoil cycle is 36h, and thickness of filter bed is 1.6m.
Embodiment two
According to shown in Figure 1, a kind of synchronous denitrification dephosphorizing filter method, its step is as follows:
1. the Sewage Plant secondary treatment yielding water is promoted in the air-water backwash filter through pump;
2. utilize volume pump that carbon source, chemical dephosphorization medicament are dropped in the lift pump room suction well, its dosage is: carbon source-methanol dosage 25mg/L, chemical dephosphorization medicament-poly-iron dosage 10mg/L;
3. pending water and medicament enter in the air-water backwash filter and filter after lift pump mixes, the water discharging after the filtration or as reclaimed wastewater reuse; Air-water backwash filter adopts quartz sand as homogeneous filtering material, and its filtering velocity is 6m/h, and the recoil cycle is 24h, and thickness of filter bed is 1.6m.
Embodiment three
According to shown in Figure 2, a kind of synchronous denitrification dephosphorizing filtration unit, comprise: advanced treatment lift pump room 1, the water inlet pipe 2 of advanced treatment lift pump room 1 and the secondary treatment yielding water of Sewage Plant link to each other, advanced treatment lift pump room rising pipe 3 links to each other with mixing tank 4, add carbon source, the volume pump of chemical dephosphorization medicament links to each other with mixing tank 4 respectively by pipeline, mixing tank 4 links to each other with air-water backwash filter 5 by pipeline, air-water backwash filter 5 water outlets link to each other with wet well 6 by pipeline, air-water backwash filter 5 is gone back and air water recoiling device water inlet pipe 8, inlet pipe 9 and back flushing water shoot 10 link to each other, and filter back water discharges or connect reclaimed wastewater reuse equipment from wet well 6 by pipeline 7.
Described air-water backwash filter 5 adopts quartz sand as homogeneous filtering material, and its filtering velocity is 8m/h, and the recoil cycle is 36h, and thickness of filter bed is 1.6m.
Embodiment four
A kind of synchronous denitrification dephosphorizing filtration unit, comprise: advanced treatment lift pump room 1, the water inlet pipe 2 of advanced treatment lift pump room 1 and the secondary treatment yielding water of Sewage Plant link to each other, the rising pipe 3 of advanced treatment lift pump room 1 links to each other with air-water backwash filter 5, add carbon source, the volume pump of chemical dephosphorization medicament inserts the suction well of lift pump room 1 by pipeline, air-water backwash filter 5 water outlets link to each other with wet well 6 by pipeline, air-water backwash filter 5 is gone back and air water recoiling device water inlet pipe 8, inlet pipe 9 and back flushing water shoot 10 link to each other, and filter back water discharges or connect reclaimed wastewater reuse equipment from wet well 6 by pipeline 7.
Described air-water backwash filter 5 adopts quartz sand as homogeneous filtering material, and its filtering velocity is 6m/h, and the recoil cycle is 24h, and thickness of filter bed is 1.6m.
Claims (4)
1, a kind of synchronous denitrification dephosphorizing filter method, it is characterized in that: its step is as follows:
1. the Sewage Plant secondary treatment yielding water is promoted to through pump and mixes in the facility, or directly is promoted in the air-water backwash filter;
2. carbon source, chemical dephosphorization medicament quantitatively drop into and mix in the facility, or adopt the mode that adds before the pump, quantitatively drop in lift pump room suction well or the water inlet pipe, and carbon source and chemical dephosphorization added amount of chemical are determined according to the water quality situation;
3. pending water and medicament enter in the air-water backwash filter and filter after mixing facility or lift pump and mixing, filter back water discharging or as reclaimed wastewater reuse.
2, synchronous denitrification dephosphorizing filter method according to claim 1 is characterized in that: carbon source, chemical dephosphorization medicament, its dosage is: carbon source is in methyl alcohol 10-25mg/L, and the chemical dephosphorization medicament is with Fe
3+Meter 5-10mg/L.
3, a kind of synchronous denitrification dephosphorizing filtration unit, it is characterized in that: comprising: advanced treatment lift pump room (1), the water inlet pipe (2) of advanced treatment lift pump room (1) is connected with the Sewage Plant secondary treatment yielding water, the rising pipe (3) of advanced treatment lift pump room (1) links to each other with mixing facility (4), carbon source, the quantitative throwing device of chemical dephosphorization medicament links to each other with mixing facility (4) respectively by pipeline, mixing facility (4) links to each other with air-water backwash filter (5) by pipeline, air-water backwash filter (5) water outlet links to each other with wet well (6) by pipeline, air-water backwash filter (5) is gone back and air water recoiling device water inlet pipe (8), inlet pipe (9) and back flushing water shoot (10) link to each other, and filter back water discharges or connect reclaimed wastewater reuse equipment from wet well (6) by pipeline (7); Perhaps comprise: advanced treatment lift pump room (1), the water inlet pipe (2) of advanced treatment lift pump room (1) is connected with the Sewage Plant secondary treatment yielding water, carbon source, the quantitative throwing device of chemical dephosphorization medicament inserts the suction well or the water inlet pipe of advanced treatment lift pump room (1) by pipeline, the rising pipe (3) of advanced treatment lift pump room (1) links to each other with air-water backwash filter (5), air-water backwash filter (5) water outlet links to each other with wet well (6) by pipeline, air-water backwash filter (5) is gone back and air water recoiling device water inlet pipe (8), inlet pipe (9) and back flushing water shoot (10) link to each other, and filter back water discharges or connect reclaimed wastewater reuse equipment from wet well (6) by pipeline (7).
4, according to claim 1 and 3 described synchronous denitrification dephosphorizing filter method and devices, it is characterized in that: air-water backwash filter (5) adopts quartz sand as homogeneous filtering material, and its filtering velocity is 3-10m/h, and the recoil cycle is 12-48h, and thickness of filter bed is 1.0-2.0m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100621913A CN101549906B (en) | 2009-05-21 | 2009-05-21 | Method for synchronously denitrification, dephosphorization and filtering |
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| CN2009100621913A CN101549906B (en) | 2009-05-21 | 2009-05-21 | Method for synchronously denitrification, dephosphorization and filtering |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817224A (en) * | 2015-04-08 | 2015-08-05 | 天津大学 | Sewage phosphate removing method by breaking wall, backflowing and adding ferric salt |
| CN106082556A (en) * | 2016-08-08 | 2016-11-09 | 华电水务工程有限公司 | A kind of advanced nitrogen dephosphorization double layer filter system |
| CN110407399A (en) * | 2019-04-29 | 2019-11-05 | 南京南化建设有限公司 | A kind of shallow-layer rich water processing method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309665C (en) * | 2004-11-19 | 2007-04-11 | 宋乾武 | Nitrogen and phosphorus removing process |
-
2009
- 2009-05-21 CN CN2009100621913A patent/CN101549906B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104817224A (en) * | 2015-04-08 | 2015-08-05 | 天津大学 | Sewage phosphate removing method by breaking wall, backflowing and adding ferric salt |
| CN106082556A (en) * | 2016-08-08 | 2016-11-09 | 华电水务工程有限公司 | A kind of advanced nitrogen dephosphorization double layer filter system |
| CN110407399A (en) * | 2019-04-29 | 2019-11-05 | 南京南化建设有限公司 | A kind of shallow-layer rich water processing method |
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| CN101549906B (en) | 2011-05-11 |
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Address after: 430010, Jiefang Park Road, Jiang'an District, Hubei, Wuhan, 41 Patentee after: Central & Southern China Municipal Engineering Design & Research Institute Co.,Ltd. Address before: 430010, Jiefang Park Road, Jiang'an District, Hubei, Wuhan, 41 Patentee before: CENTRAL AND SOUTHERN CHINA MUNICIPAL ENGINEERING DESIGN & Research Institute |
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Effective date of registration: 20210527 Address after: 430200 hejiahu village, Daqiao Industrial Park, Jiangxia District, Wuhan City, Hubei Province Patentee after: CITIC Qingshui Into the Yangtze River (Wuhan) Investment and Construction Co.,Ltd. Address before: 430010, Jiefang Park Road, Jiang'an District, Hubei, Wuhan, 41 Patentee before: Central & Southern China Municipal Engineering Design & Research Institute Co.,Ltd. |