CN101786724A - Technology for processing domestic sewage into normal water - Google Patents
Technology for processing domestic sewage into normal water Download PDFInfo
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- CN101786724A CN101786724A CN200910259476A CN200910259476A CN101786724A CN 101786724 A CN101786724 A CN 101786724A CN 200910259476 A CN200910259476 A CN 200910259476A CN 200910259476 A CN200910259476 A CN 200910259476A CN 101786724 A CN101786724 A CN 101786724A
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- water
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- sanitary sewage
- sewage
- technology
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 239000010865 sewage Substances 0.000 title claims abstract description 65
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 34
- 230000003647 oxidation Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000000126 substance Substances 0.000 claims abstract description 11
- 230000020477 pH reduction Effects 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims abstract description 8
- 239000005416 organic matter Substances 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 23
- 239000000945 filler Substances 0.000 claims description 20
- 230000003197 catalytic effect Effects 0.000 claims description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 238000005273 aeration Methods 0.000 claims description 7
- 238000006731 degradation reaction Methods 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 229920002334 Spandex Polymers 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000004759 spandex Substances 0.000 claims description 5
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 230000000593 degrading effect Effects 0.000 claims description 3
- 230000029087 digestion Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 3
- 241001148470 aerobic bacillus Species 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 230000003301 hydrolyzing effect Effects 0.000 abstract 3
- 241001148471 unidentified anaerobic bacterium Species 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000000813 microbial effect Effects 0.000 description 4
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 241000216843 Ursus arctos horribilis Species 0.000 description 2
- 238000006065 biodegradation reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009287 sand filtration Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002498 deadly effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention discloses a technology for processing domestic sewage into normal water, which mainly comprises the following steps: firstly, separating suspended solid; then, carrying out biochemical processing; and finally, carrying out filtration. The invention is characterized in that the biochemical processing consists of hydrolytic acidification processing and two stages of contact oxidation processing. The invention has the advantages that the two methods are used for integrally processing domestic sewage, the automatic sewage purification is realized by using anaerobic bacteria and aerobic bacteria contained in the sewage per se through conditions given in the technology of hydrolytic acidification processing and two stages of contact oxidation processing. Particularly, a hydrolytic acidification processing unit can obtain high organic matter removal rate through little investment and low operation cost, the biodegradability of the sewage is improved, the suspended substance content in the sewage is reduced, and in addition, the rest mud yield of the whole system can be effectively reduced.
Description
Technical field
The present invention relates to the technology of a kind of sanitary sewage disposal Cheng Zhongshui, be specifically related to a kind of domestic sewage treatment process that adopts acidication and two-stage catalytic oxidation to carry out biochemical sewage disposal.
Background technology
The water outlet of middle water treatment station should be satisfied water water quality standard in the country.At present country put into effect all kinds of in the water water quality standard mainly contain " miscellaneous domestic water quality standard " that the Ministry of Construction issues (CJ25.1-89) with " reclaimed water reuse is in the standard of landscape water body " (CJ/T95-2000), specific design effluent quality index sees the following form.This engineering reference standard: " miscellaneous domestic water quality standard " (CJ25.1-89); " reclaimed water reuse is in the standard of landscape water body " (CJ/T95-2000); " architectural intermediate water design specifications " (CECS30:91); " water supply and drainage design manual-building water supply and drainage engineering "; " building water supply and drainage design specifications " (GBJ15-88/1997 version).
The design effluent quality
Illustrate:
(1) chlorine residue is meant pipe network tip chlorine content;
(2) " reclaimed water reuse is in the standard of landscape water body " chlorine content in (CJ/T95-2002) is got 1.0mg/L when summer, gets 0.2mg/L winter.
More than be the standard of national centering water treatment, below be the present invention can at the engineering of ore deposit, Daxing sanitary sewage, following table is the water quality report of ore deposit, Daxing sanitary sewage:
The water quality report that the ore deposit, Daxing provides:
The examining report of 08 year 04 month 16 days sanitary sewage
| Index | Chemical oxygen demand (COD) | ??NH3-N | Suspended substance | ??PH |
| Numerical value | ??131 | ??8.414 | ??15 | ??7.46 |
The examining report of 08 year 05 month 27 days sanitary sewage
| Index | Chemical oxygen demand (COD) | ??NH3-N | Suspended substance | ??PH |
| Numerical value | ??102 | ??5.25 | ??29 | ??7.36 |
Can draw according to last table, the sanitary sewage chemical oxygen demand (COD) (COD) of this project is about 300mg/L, and pit water SS content is handled this project more than 100mg/L, only handle with conventional contact oxidation method, is water reuse standard in can not reaching; And only contact oxidation method is handled, and can produce foul smell under the effect of the anerobe that contains in sewage, and surrounding environment is formed secondary pollution.
Summary of the invention
Main task of the present invention is to provide the technology of a kind of sanitary sewage disposal Cheng Zhongshui, is specifically related to a kind of bigger wastewater treatment of water quality and quantity fluctuation that is suitable for, the characteristics that its sludge quantity with generation is few, can not produce the sludge bulking problem.
In order to solve above technical problem, ore deposit, a kind of Daxing of the present invention domestic sewage treatment process mainly is first separate solid suspended substance, carries out biochemical treatment then, filters at last to form; It is characterized in that: described biochemical treatment is handled by acidication and the processing of two-stage catalytic oxidation constitutes.
Further, described acidication is treated under anaerobic environment, presses sanitary sewage 3500-3800m
3The flow of/d flows into, and the anerobe that itself contains in its mud carries out conventional anaerobic reaction in hydrolysis acidification pool, and the organism in the digestion sewage makes macromolecular organic matter constantly be converted into micromolecular active sludge or methane gas; In the acidication reaction tank, establish φ 150 semi soft packing 220-245m
3, the water after the processing passes filler and enters next program, and in this process, active sludge is attached on filler, and the water after the processing is separated with active sludge.
Further, described two-stage catalytic oxidation is treated to: contact-oxidation pool divides two series connection, all establishes φ 150 semi soft packing 380-420m in contact-oxidation pool
3Be that 20: 1 ratio is carried out aeration in the volume ratio of the aeration rate and the water yield when sanitary sewage enters first step contact-oxidation pool, make it fully contain oxygen; Aerobe in the sanitary sewage carries out the conventional oxidative degradation of touching to the organism in the water under containing the sufficient environment of oxygen handles, handle the organism that anaerobe can not be handled, make organic-biological become active sludge, sanitary sewage after will degrading then passes filler, active sludge is attached on the filler, sanitary sewage is discharged, and realizes that water, mud separate; Described first step contact oxidation is identical with second stage contact oxidation.
Further, described semi soft packing is: the semi soft packing that spandex fiber is made.
The invention has the advantages that: the acidication processing unit can obtain higher organic removal rate with less investment and working cost, improve the biodegradability of sewage, reduce the suspension content in the sewage, and can effectively reduce the excess sludge production of total system, hydrolysis acidification pool is double as water yield equalizing tank also.
In having adopted, establishes this programme the acidication processing unit of filler and submersible agitator.Filler can effectively improve the sludge concentration in the acidication unit, thereby improves organic removal efficient in the sewage; According to other sewage disposal service experience, this engineering has increased acidication processing unit volume, thereby improves denitrification effect; Submersible agitator has guaranteed that interior sewage of acidication processing unit and mud mix, and prevent cutout.
The advantage that catalytic oxidation is handled:
This programme adopts contact oxidation method.Compare with traditional activated sludge process, contact oxidation method has following advantage:
1, can not produce the sludge bulking problem, operational management is simple, need not to be provided with special operator;
2, need not to be provided with mud backflow facility;
3, the sludge quantity of Chan Shenging is few, and mud can regularly be transported outward by the fecal suction truck of environmental sanitation department;
4, capacity of resisting impact load is strong, is particularly suitable for the bigger wastewater treatment of water quality and quantity fluctuation;
5, for conventional activated sludge process, volumetric loading is higher, the processing efficiency height;
6, the power consumption of contact oxidation method is lower.
Embodiment
Technical process of the present invention is: sanitary sewage is removed tiny suspended solid, and acidification pool is separated in water inlet, and degradation of organic substances is an active sludge under the effect of anaerobe, adheres to active sludge by elastic filler again and realizes that water, mud separate; The reacted sanitary sewage of acidication carries out contact oxidation again under the effect of aerobe, the organism that anaerobe fails to degrade in the degradation of sewage is also separated, water source after will degrading again precipitates, the aging microbial film that comes off during the separate microorganism degraded, clear water flows to the Zhong Shui pond naturally then, and in the Zhong Shui pond, its water source is according to using character, carry out quartz sand filtration or activated carbon filtration again, finish whole sanitary sewage disposal process.More than all in independent pond, each pond is separate for each process of Chu Liing, and sanitary sewage enters another pond from a pond, provides power with lift pump.
Concrete processing step is as follows:
At first, after sanitary sewage advances the sewage storage pool, carry with 3500m with lift pump
3Flow enters mechanical fine fack pond, this pond is semi-underground pond, in the pond, place artificial grid, spacing between the grizzly bar is 20mm, and like this, water is out-of-date from mechanical fine fack pond, wherein following suspended solid and the suspended substance of 20mm all is trapped, sanitary sewage is carried out the most preliminary purification, both prepared, prevented that again big solid matter from stopping up lift pump for follow-up water inlet.The water that handle in this machinery fine fack pond enters equalizing tank with same flow.
Because sewage comes the character of water to determine the water water yield to have ununiformity,, reduce impact load to the unitary influence of subsequent disposal so the water quality and quantity of equalizing tank with homogenizing sewage is set.Equalizing tank of the present invention is provided with φ 150 medium-soft spandex fiber filler 276m with the best that is configured to of 4.2 * 21.9 * 4.8m in the pond
3, this sanitary sewage acidication is promptly transferred the oxygen in the water, and the part aerobic bacteria is deadly, and the anerobe of having by oneself in the sewage makes organic matter constantly be converted into methane gas by the organism in the conventional anaerobic reaction digestion sewage then.
This equalizing tank is owing to made anaerobic environment; also taken into account the effect of acidication sanitary sewage in fact; in the filler established; the organism that part is degraded by anerobe is attached to and isolates the water source on the filler; promptly alleviated the unitary processing load of subsequent disposal; prevented that effectively equalizing tank from distributing foul smell, the protection surrounding enviroment.
Effusive sanitary sewage is equally with 3500m from equalizing tank
3Flow through the mechanical grille pond, be 5mm with the grizzly bar gap, the grid of grid width 1000mm is mounted in the grating tank with 70 ° angle, carries out more tiny solids and carries out filtering separation, enters the acidication treating pond then.Acidication treating pond of the present invention is 5.0 * 12.6 * 4.8m structure, in establish submersible agitator, medium-soft spandex fiber filler and return-flow type water distributor, described return-flow type water distributor is located at water-in, water-in of the present invention is 3, be distributed on a side of acidication treating pond, medium-soft spandex fiber filler is distributed in the pond, and submersible agitator stirs in the pond.
In the whole process of acidication, also be anaerobic, its reaction process is identical with reaction process in the equalizing tank, further removes the organism in the water, and generally the result who handles in this pond is that 30% COD removes.
The acidication processing unit can obtain higher organic removal rate with less investment and working cost, improve the biodegradability of sewage, reduce the suspension content in the sewage, and can effectively reduce the excess sludge production of total system, hydrolysis acidification pool is double as water yield equalizing tank also.
In having adopted, establishes this programme the acidication processing unit of filler and submersible agitator.Filler can effectively improve the sludge concentration in the acidication unit, makes sludge concentration reach 18-22%; Thereby organic removal efficient in the raising sewage; According to other sewage disposal service experience, this engineering has increased acidication processing unit volume, thereby improves denitrification effect; Submersible agitator has guaranteed that interior sewage of acidication processing unit and mud mix, and prevent cutout.
Handle through acidication, the organism that anerobe can be decomposed all can effectively be degraded, but, need be still waiting further degraded by the organism of aerobic biodegradation, in ensuing processing, what adopt is that contact oxidation method is handled, more thorough in order to handle, and contact oxidation method is handled and is divided into two-stage.
First step catalytic oxidation is treated to: establish the semi soft packing 161m identical with above step in contact-oxidation pool
3, be provided with aerator at this water-in that touches oxidation pond, to 3500m
3The sanitary sewage that/d flow flows to carries out aeration, and the volume ratio of aeration rate and water is 20: 1.This aeration is handled and is made sanitary sewage fully contain oxygen, and aerobe contains oxygen at this and under environment the organism in the water decomposed fully, and this process is conventional biodegradation process, no longer specifically describes at this.
Organism after the degraded forms active mud, and is on filler, separated.
For can remaining organic matter degradation is more thorough, it is identical that the treatment process that second stage catalytic oxidation is handled and first step catalytic oxidation are handled, further degradation of organic substances and separate with filler, and it is zero that its COD content is trended towards.
After having carried out above acidication reaction and the processing of two-stage catalytic oxidation, sanitary sewage itself suspended solid and the disadvantageous organism of environment almost cleaned out, water quality also is close to the relevant water coolant of country and the standard of boiler feed water, but, because aerobe also has the aged microbial film to break away from degradation process, therefore, go out microbial film at the inferior settling tank precipitation separation that enters into.
Settling tank among the present invention is the ramp type settling tank, its swash plate in the pond setting angle 45-75 °, the spacing of swash plate is 50-120mm, the sanitary sewage that comes out in the contact-oxidation pool enters settling tank from the below water-in, in the process of upwards water inlet, by microbial film in the sloping plate deposition water and tiny mud impurity thereof, clear water is separated.
Water pond in the middle of entering from the effusive clear water of settling tank, the effect of intermediate pool mainly be in the balance previous process discharge at 3500m
3/ d, and the less situation of filter flooding velocity of back.
Water in the intermediate pool enters the direct filtration program: with 75m
3The flow of/d enters quartz sand filtration device and activated charcoal filter successively, in these two strainers, carry out conventional back flushing and absorption, further filter fine suspension, guarantee that every water quality reaches the index of boiler feed water or water coolant, finish whole sanitary sewage disposal process.In order to save the water source, the water source of back flushing can also carry out processing and utilizing again by pipe-line transportation to equalizing tank.
Claims (4)
1. the technology of a sanitary sewage disposal Cheng Zhongshui mainly is first separate solid suspended substance, carries out biochemical treatment then, filters at last to form; It is characterized in that: described biochemical treatment is handled by acidication and the processing of two-stage catalytic oxidation constitutes.
2. the technology of a kind of sanitary sewage disposal Cheng Zhongshui according to claim 1 is characterised in that: described acidication is treated under anaerobic environment, presses sanitary sewage 3500-3800m
3The flow of/d flows into, and the anerobe that itself contains in its mud carries out conventional anaerobic reaction in hydrolysis acidification pool, and the organism in the digestion sewage makes macromolecular organic matter constantly be converted into micromolecular active sludge or methane gas; In the acidication reaction tank, establish φ 150 semi soft packing 220-245m
3, the water after the processing passes filler and enters next program, and in this process, active sludge is attached on filler, and the water after the processing is separated with active sludge.
3. the technology of a kind of sanitary sewage disposal Cheng Zhongshui according to claim 2 is characterised in that: described two-stage catalytic oxidation is treated to: contact-oxidation pool divides two series connection, all establishes φ 150 semi soft packing 380-420m in contact-oxidation pool
3Be that 20: 1 ratio is carried out aeration in the volume ratio of the aeration rate and the water yield when sanitary sewage enters first step contact-oxidation pool, make it fully contain oxygen; Aerobe in the sanitary sewage carries out conventional catalytic oxidation degradation treatment to the organism in the water under containing the sufficient environment of oxygen, handle the organism that anaerobe can not be handled, make organic-biological become active sludge, sanitary sewage after will degrading then passes filler, active sludge is attached on the filler, sanitary sewage is discharged, and realizes that water, mud separate; Described first step contact oxidation is identical with second stage contact oxidation.
4. according to the technology of claim 2 or 3 described a kind of sanitary sewage disposal Cheng Zhongshui, be characterised in that: described semi soft packing is the semi soft packing that spandex fiber is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259476A CN101786724A (en) | 2009-12-22 | 2009-12-22 | Technology for processing domestic sewage into normal water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910259476A CN101786724A (en) | 2009-12-22 | 2009-12-22 | Technology for processing domestic sewage into normal water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101786724A true CN101786724A (en) | 2010-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910259476A Pending CN101786724A (en) | 2009-12-22 | 2009-12-22 | Technology for processing domestic sewage into normal water |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583884A (en) * | 2012-02-16 | 2012-07-18 | 北京科技大学 | Method for treating mixed industrial sewage in industrial park |
| CN105859035A (en) * | 2016-05-12 | 2016-08-17 | 南京海益环保工程有限公司 | Reclaimed water reuse and treatment process |
| CN106277286A (en) * | 2016-08-30 | 2017-01-04 | 中蓝连海设计研究院 | The removing method of activated sludge sticky inflation in biochemical system |
| CN107098546A (en) * | 2017-07-06 | 2017-08-29 | 安徽三环水泵有限责任公司 | A kind of pharmacy sewage processing method |
| CN108658394A (en) * | 2018-06-22 | 2018-10-16 | 东莞市小雨荷餐饮管理有限公司 | Domestic sewage pretreatment device |
-
2009
- 2009-12-22 CN CN200910259476A patent/CN101786724A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102583884A (en) * | 2012-02-16 | 2012-07-18 | 北京科技大学 | Method for treating mixed industrial sewage in industrial park |
| CN105859035A (en) * | 2016-05-12 | 2016-08-17 | 南京海益环保工程有限公司 | Reclaimed water reuse and treatment process |
| CN106277286A (en) * | 2016-08-30 | 2017-01-04 | 中蓝连海设计研究院 | The removing method of activated sludge sticky inflation in biochemical system |
| CN107098546A (en) * | 2017-07-06 | 2017-08-29 | 安徽三环水泵有限责任公司 | A kind of pharmacy sewage processing method |
| CN108658394A (en) * | 2018-06-22 | 2018-10-16 | 东莞市小雨荷餐饮管理有限公司 | Domestic sewage pretreatment device |
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Open date: 20100728 |