CN102745865A - Deep well aeration sewage treatment method - Google Patents
Deep well aeration sewage treatment method Download PDFInfo
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- CN102745865A CN102745865A CN2012102447947A CN201210244794A CN102745865A CN 102745865 A CN102745865 A CN 102745865A CN 2012102447947 A CN2012102447947 A CN 2012102447947A CN 201210244794 A CN201210244794 A CN 201210244794A CN 102745865 A CN102745865 A CN 102745865A
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- aeration
- deep well
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- treatment method
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- 238000005273 aeration Methods 0.000 title claims abstract description 60
- 239000010865 sewage Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000002351 wastewater Substances 0.000 claims abstract description 17
- 239000010802 sludge Substances 0.000 claims abstract description 16
- 238000007872 degassing Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 13
- 238000004062 sedimentation Methods 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000006228 supernatant Substances 0.000 claims abstract description 4
- 238000005345 coagulation Methods 0.000 claims abstract description 3
- 230000015271 coagulation Effects 0.000 claims abstract description 3
- 238000000354 decomposition reaction Methods 0.000 claims abstract 2
- 230000007062 hydrolysis Effects 0.000 claims abstract 2
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract 2
- 238000010979 pH adjustment Methods 0.000 claims abstract 2
- 238000010992 reflux Methods 0.000 claims abstract 2
- 239000013049 sediment Substances 0.000 claims abstract 2
- 239000012535 impurity Substances 0.000 claims 1
- 238000011045 prefiltration Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 11
- 229910052760 oxygen Inorganic materials 0.000 description 11
- 239000001301 oxygen Substances 0.000 description 11
- 238000004043 dyeing Methods 0.000 description 10
- 230000001112 coagulating effect Effects 0.000 description 6
- 239000011259 mixed solution Substances 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000020477 pH reduction Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000007639 printing Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000009300 dissolved air flotation Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000004064 dysfunction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009293 extended aeration Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000796 flavoring agent Substances 0.000 description 1
- 235000019634 flavors Nutrition 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Activated Sludge Processes (AREA)
Abstract
本发明涉及一种深井曝气污水处理方法，属于水域的曝气技术领域。一种深井曝气污水处理方法，包括预处理、沉淀、曝气和二次沉淀，所述的预处理是经格栅预过滤后，调节pH，进入混凝沉淀池进行沉淀，沉淀物进入污泥池并经压滤机后制成泥饼外运，上层液进入到水解池，进一步分解，然后到深井曝气装置中进行深层或超深层曝气，曝气时间为2-150小时，处理后的废水或污泥回流后进入脱气池，脱气完毕后进入二沉池进一步沉淀，沉淀出的污泥回流到深井曝气装置和污泥池，上层液先在生物活性炭池中吸附除杂，然后臭氧氧化，经滤池进入回用水池中。本发明具有废水处理效果好、占地少、耗能低、投资省、无噪音、无二次污染、运行费用低等优点。
The invention relates to a deep well aeration sewage treatment method, which belongs to the technical field of aeration in water areas. A deep well aeration sewage treatment method, including pretreatment, sedimentation, aeration and secondary sedimentation, the pretreatment is pre-filtered through the grid, pH adjustment, into the coagulation sedimentation tank for sedimentation, the sediment enters the sewage The mud pool is made into a mud cake after being passed through a filter press, and the supernatant liquid enters the hydrolysis tank for further decomposition, and then goes to the deep well aeration device for deep or ultra-deep aeration. The aeration time is 2-150 hours. The final wastewater or sludge enters the degassing tank after reflux, and enters the secondary sedimentation tank for further precipitation after degassing, and the precipitated sludge returns to the deep well aeration device and the sludge tank, and the supernatant liquid is first adsorbed and removed in the biological activated carbon tank. Miscellaneous, then ozone oxidation, through the filter into the reuse pool. The invention has the advantages of good waste water treatment effect, less land occupation, low energy consumption, low investment, no noise, no secondary pollution, and low operating cost.
Description
Technical field
The present invention relates to a kind of deep well aeration sewage water treatment method, belong to from textile industry aeration of stretches technical field.
Background technology
Dyeing waste water is the main source that textile industry is polluted.According to incompletely statistics, national dyeing waste water quantity discharged is about 300～40,000,000,000 tons, and not only quantity discharged is big; Colourity and pollution level are high; And along with the application of fiber product, slurry, dyestuff, washing composition, chemical assistant and finishing composition etc., the waste water composition constantly changes, and the difficulty of processing is also just bigger.Because being difficult to biodegradable organism gets into dyeing waste water in a large number; Its COD concentration also rises to 2000mg/L by original hundreds of mg/L; Even bigger, use original biological treatment system, the COD clearance drops to below 50 ﹪ from 70 ﹪; And traditional deposition, the air supporting method is merely about 30 ﹪ the COD clearance of this type dyeing waste water.Therefore, dyeing waste water is handled a great problem that becomes current environment protection day by day cost-effectively.
At present, the dyeing and printing sewage of printing and dyeing enterprise is administered common employing traditional " materialization " and " biochemistry " two kinds of methods.Comparatively advanced is the technology of using " biochemistry ", i.e. blast aeration Activated Sludge Process.The shortcoming of this technology mainly is: floor space is big, and power consumption is high, and oxygen shifts utilization ratio low (being generally below 20%); The COD removal effect is low, and the day-to-day operation cost is high, and (it is big to handle on-site noise to produce secondary pollution; The foul smelling flavor), maintenance difficult, operational management can not robotization.Obviously, the blast aeration Activated Sludge Process of this quasi-tradition can not satisfy the long-range environmental protection requirement in dyeing and Shaoxing, does not also meet the target of Sustainable development.
Summary of the invention
[0004] the purpose of this invention is to provide the deep well aeration sewage water treatment method that a kind of floor space is little, treatment effect good, processing costs is low.
The technical scheme of taking for realization the object of the invention is following:
A kind of deep well aeration sewage water treatment method comprises pre-treatment, deposition, aeration and secondary sedimentation, and described pre-treatment is after the grid pre-filtering; Regulate pH, get into coagulative precipitation tank and precipitate, throw out gets into sludge sump and behind pressure filter, processes the mud cake outward transport; Upper strata liquid enters into hydrolytic tank, further decomposes, and in the deep well aeration device, carries out deep layer or deep-well aeration then; Aeration time is 2-150 hour, and waste water after the processing or mud backflow back get into degassing pond, get into second pond after the degassing finishes and further precipitate; The mud that is settled out is back to deep well aeration device and sludge sump; Upper strata liquid is adsorption-edulcoration in the biological activated carbon pond earlier, and ozone oxidation gets in the reuse pool through the filter tank then.
The device of realizing above-mentioned deep well aeration sewage water treatment method comprises deep-well cylindrical shell and downtake; It between deep-well cylindrical shell and the downtake upcast; Deep-well cylindrical shell top is inverted draw cut; Downtake is provided with high efficient gas and liquid turbulator, side direction inner cycle channel and blowout prevention plate, and with the supporting de-gassing vessel that is provided with of aerator tank, degassing pond is communicated with inverted draw cut.
Described downtake flow stream velocity is 0.7-2m/s, and the downtake aeration degree of depth is a 24-50 rice, and the upcast aeration degree of depth is a 15-30 rice.
Principle of work of the present invention and beneficial effect are following:
1. the present invention is an aerating apparatus with the bigger ground lower shell construction of the degree of depth; Cylindrical shell vertically is divided into upcast and two parts of downtake of concentric circles; Get into the waste water of deep layer and the mixed solution of returned sluge, be purified in the process that between downtake and upcast, circulates; The 1/2-1/3 place of the deep well aeration equipment downtake degree of depth is provided with the high efficient gas and liquid turbulator, and high speed pressurized air promotes flow through its to be mixed along downtake and move downward, the flow necking down pipe of flowing through; Bigger variation takes place in speed, makes the flow in the downtake reach very high Reynolds number, produces violent turbulent flow; Airborne oxygen gas-liquid mixed in this state is even; Can better be dissolved in the water, make oxygen transfer efficient bring up to 90%, energy consumption only is equivalent to 50% of common aeration method; Downtake at deep well aeration equipment is provided with the side direction inner cycle channel, has prolonged the residence time of treating water at inverted draw cut, has realized the energy-conservation degassing behind the aeration, compares with traditional vacuum degasser, has improved the removal effect of underwater bubble, has practiced thrift energy.
2. in the sewage water treatment method of the present invention, the degree of depth of deep well aeration device is big, and hydrostaticpressure is high, and pressurized gas has been accomplished molten airway dysfunction in oxygenation, for active sludge dissolved air flotation, concentrated two steps once accomplish; Simultaneously mixed solution is played agitating function, guaranteed the thorough mixing of mixed solution and raw waste water, and mixed solution is carried out plug-flow; The air of supplying with like this is the power of well liquid circulation of exposing to the sun deeply; For the organism in the removal of microorganisms waste water provides sufficient dissolved oxygen, oxygen transfer efficient has brought up to 90% again, has improved 5-10 doubly than traditional aerating apparatus; Energy consumption has reduced by 50%; Thereby improved the COD clearance, can guarantee that system handles sewage safety and stability is reliable, characteristics such as having good waste water treatment effect, take up an area of less, power consumption is low, reduced investment, noiselessness, non-secondary pollution, working cost are low.
3. can directly handle organic wastewater with high concentration, water-fast power and organic impact load ability are strong.Conventional aeration can not transmit oxygen to waste water and mikrobe owing to can not keep high dissolved oxygen in the aeration tank full and uniformly, and coefficient of oxygen utilization is low, cause the aeration tank volume greatly and oxygen-transfer efficiency low, treatment of high concentration waste water effectively such as the impact load of anti-BOD not.Deep well aeration device among the present invention is made oxygen source with air and can be utilized efficiently; Dissolved oxygen can reach 25-40mg/l in the deep-well; Therefore can directly handle and be prone to by biodegradable high-concentration waste water, and water-fast power and organic impact load, hang down about 40% than common law and the processing costs of pure oxygen method.
4. the sludge disposal expense is low.Because the reactor drum mixed solution has very high CO
2Concentration; PH value to water inlet has very strong shock absorption, and volatile solid will reduce 40%～50%, thereby the sludge yield that sewage water treatment method of the present invention obtains is the 1/2-1/3 of common aeration; Be superior to extended aeration; Mud can directly be used as soil and fertilizer after dehydration, thoroughly solve the ultimate disposal problem of mud.
Description of drawings
Fig. 1 is the structural representation of middle-deep well aerating apparatus of the present invention;
Fig. 2 is the schema of a kind of deep well aeration sewage water treatment method of the present invention.
Label among the figure: 1, deep-well cylindrical shell; 2, downtake; 3, upcast; 4, side direction interior passageway; 5, high efficient gas and liquid turbulator; 6, blowout prevention plate; 7, inverted draw cut; 8, degassing pond.
Embodiment
The present invention carries out concrete description and explanation through following examples.
The structural representation of Fig. 1 deep well aeration device of the present invention; The device of deep well aeration sewage water treatment method comprises deep-well cylindrical shell 1 and downtake 2; Be cyclic upcast 3 between deep-well cylindrical shell 1 and the downtake 2, deep-well cylindrical shell 1 top is inverted draw cut 7, and downtake 2 is provided with high efficient gas and liquid turbulator 5, side direction inner cycle channel 4 and blowout prevention plate 6; The inverted draw cut 7 supporting degassing ponds 8 that are provided with, degassing pond 8 is communicated with inverted draw cut 7.
In conjunction with the schema of a kind of deep well aeration sewage water treatment method of Fig. 2 the present invention, the process grid flows into equalizing tank after removing big suspended substance certainly, carries out the adjusting of the sewage quality water yield; Sewage is after regulating; Utilize sump pump that sewage is lifted into coagulative precipitation tank, sewage is carried out coagulating treatment, after coagulating sedimentation separates; Supernatant water is from flowing into the acidifying that is hydrolyzed of deep layer acidification hydrolization pond; Sewage flows into the deep well aeration device after acidification hydrolization is handled, and the mixed solution after the processing flows into second pond certainly and carries out solid-liquid separation after degassing pond 8 removes the microbubble that sticks on the active sludge; The precipitating sludge major part passes back into deep well aeration device, acidification hydrolization pond, and unnecessary mud returns into coagulative precipitation tank.The unnecessary mud of coagulative precipitation tank enters sludge thickener, after concentrated, coagulation, dehydration, transports outward, and the primary water part of second pond enters sewage network after metering, goes into sewage work then and after handling, reaches discharging again.What sewage needed reuse goes into reuse pool after biological activated carbon processing, ozone oxidation, valveless filtering pool are filtered, be back to production.
With the Q that disposes of sewage day
Always =5000m
3/ day, COD≤4000mg/L, emission request are Q
Always =5000 m
3/ d, COD≤500mg/L are example, and aeration time is 100-150 hour; Downtake 2 flow stream velocities are 0.7-2m/s, and the downtake 2 aeration degree of depth are 24-50 rice, and the upcast 3 aeration degree of depth are 15-30 rice; Dissolved oxygen concentration is controlled at 25-40 mg/L, and dynamicefficiency is 2.3-6KgO
2/ KW.h, behind the above-mentioned sewage water treatment method of employing the present invention, OTR is up to 60-90%, and the common aeration of power demand consumption rate reduces more than 40%; Required aeration tank volume is little, and floor space is the 1/20-1/50 of common aeration; Sludge yield is the 1/2-1/3 of common aeration.
Handle identical sewage, wastewater treatment efficiency is to such as table 1.
Table 1 adopts the contrast table of sewage water treatment method of the present invention and traditional air blast aeration process
More than table measuring and calculating, only handling 4000 tons of dyeing waste waters with day is example, can practice thrift electricity 490,000 degree every year.If there is this novel process of printing and dyeing enterprise employing of 1/3 whole city, can practices thrift electricity the whole year and will reach about 4,000 ten thousand degree.
Claims (5)
Priority Applications (1)
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| CN2012102447947A CN102745865A (en) | 2012-07-16 | 2012-07-16 | Deep well aeration sewage treatment method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102447947A CN102745865A (en) | 2012-07-16 | 2012-07-16 | Deep well aeration sewage treatment method |
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| CN102745865A true CN102745865A (en) | 2012-10-24 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395818A (en) * | 2016-09-04 | 2017-02-15 | 河南科技学院 | Preparation method of dogwood kernel active carbon |
| CN106517671A (en) * | 2016-12-19 | 2017-03-22 | 天津大学 | Wastewater treating system suitable for high-cold and anoxic regions |
| CN109205933A (en) * | 2018-09-18 | 2019-01-15 | 上海禾元环保集团有限公司 | Deep pool aeration waste water ecological processing method |
| CN119430577A (en) * | 2024-12-24 | 2025-02-14 | 常州西源污水处理有限公司 | A membrane treatment process for printing and dyeing wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106359A (en) * | 1986-09-17 | 1988-03-30 | 上海市环境保护科学研究所 | The equipment for deep-well aeration treatment of waste water of less energy-consumption |
| JP2002143874A (en) * | 2000-11-14 | 2002-05-21 | Fuji Clean Kogyo Kk | Waste water treatment equipment and waste water treatment method |
| CN101525202A (en) * | 2009-04-14 | 2009-09-09 | 东华大学 | Advanced dyeing wastewater treatment and reclaimed water reuse system and method thereof |
| CN102311171A (en) * | 2011-08-23 | 2012-01-11 | 上海复旦水务工程技术有限公司 | Horizontal well sewage treatment plant and method thereof |
-
2012
- 2012-07-16 CN CN2012102447947A patent/CN102745865A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86106359A (en) * | 1986-09-17 | 1988-03-30 | 上海市环境保护科学研究所 | The equipment for deep-well aeration treatment of waste water of less energy-consumption |
| JP2002143874A (en) * | 2000-11-14 | 2002-05-21 | Fuji Clean Kogyo Kk | Waste water treatment equipment and waste water treatment method |
| CN101525202A (en) * | 2009-04-14 | 2009-09-09 | 东华大学 | Advanced dyeing wastewater treatment and reclaimed water reuse system and method thereof |
| CN102311171A (en) * | 2011-08-23 | 2012-01-11 | 上海复旦水务工程技术有限公司 | Horizontal well sewage treatment plant and method thereof |
Non-Patent Citations (4)
| Title |
|---|
| 《中国科技信息》 20091015 姚建杰，陈伟 气提式深井曝气技术在印染废水处理中的应用 第154页第一节、第155页第2.2节，第三节 1-5 , 第19期 * |
| 《中国科技信息》 20091015 姚建杰，陈伟 气提式深井曝气技术在印染废水处理中的应用 第154页第一节、第155页第2.2节，第三节 2 , 第19期 * |
| 付正祥: "深井曝气处理制浆造纸废水初探", 《纸和造纸》, vol. 25, no. 5, 30 September 2006 (2006-09-30), pages 60 - 62 * |
| 姚建杰，陈伟: "气提式深井曝气技术在印染废水处理中的应用", 《中国科技信息》, no. 19, 15 October 2009 (2009-10-15) * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106395818A (en) * | 2016-09-04 | 2017-02-15 | 河南科技学院 | Preparation method of dogwood kernel active carbon |
| CN106517671A (en) * | 2016-12-19 | 2017-03-22 | 天津大学 | Wastewater treating system suitable for high-cold and anoxic regions |
| CN109205933A (en) * | 2018-09-18 | 2019-01-15 | 上海禾元环保集团有限公司 | Deep pool aeration waste water ecological processing method |
| CN119430577A (en) * | 2024-12-24 | 2025-02-14 | 常州西源污水处理有限公司 | A membrane treatment process for printing and dyeing wastewater |
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Application publication date: 20121024 |