CN104370432B - A kind of sewage treatment process for reducing flocculant usage - Google Patents
A kind of sewage treatment process for reducing flocculant usage Download PDFInfo
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- CN104370432B CN104370432B CN201410333611.8A CN201410333611A CN104370432B CN 104370432 B CN104370432 B CN 104370432B CN 201410333611 A CN201410333611 A CN 201410333611A CN 104370432 B CN104370432 B CN 104370432B
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- 239000010865 sewage Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000008569 process Effects 0.000 title claims abstract description 22
- 238000004062 sedimentation Methods 0.000 claims abstract description 71
- 239000000706 filtrate Substances 0.000 claims abstract description 70
- 239000010802 sludge Substances 0.000 claims abstract description 63
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 239000006228 supernatant Substances 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 9
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 238000001556 precipitation Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 5
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000009833 condensation Methods 0.000 claims abstract description 4
- 230000005494 condensation Effects 0.000 claims abstract description 4
- 239000012065 filter cake Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000000725 suspension Substances 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 5
- 239000003814 drug Substances 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims description 2
- 239000008187 granular material Substances 0.000 description 14
- 239000002351 wastewater Substances 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000008394 flocculating agent Substances 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010801 sewage sludge Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 244000144992 flock Species 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002703 mutagenesis Methods 0.000 description 1
- 231100000350 mutagenesis Toxicity 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to technical field of sewage, more particularly to a kind of sewage treatment process for reducing flocculant usage.It comprises the steps：Step 1, sludge is pumped into sludge concentration tank carries out sludge condensation；Thickened sludge in step 1 is pumped into dynamic mixer by sludge pump；Medicinal liquid in medicinal liquid agitating pond is pumped into dosing pond carries out dosing proportioning；Medicinal liquid of the dosing pond after dosing proportioning in step 3 is pumped into dynamic mixer through compound pump；Dynamic mixer enters Mobile state mixing to thickened sludge and medicinal liquid；After step 5 dynamic is mixed sludge will pump into sludge filter press and carry out filter pressing operation；Filter cake after step 6 filter pressing is discharged sludge filter press, remaining filtrate enters filtrate sedimentation tank and carries out concentration precipitation；Supernatant in sedimentation tank is pumped into medicinal liquid agitating pond carries out uniform stirring；The operation of repeat step 3；Precipitate in filtrate sedimentation tank in step 7 is extracted out from bottom of pond, importing sludge concentration tank carries out step 6 and operates.
Description
Technical field
The invention belongs to technical field of sewage, more particularly to a kind of sewage treatment process for reducing flocculant usage.
Background technology
With the continuous improvement of China's urban wastewater treatment rate, town sewage plant sludge output is also sharply increased.2009 complete
State puts into operation urban wastewater treatment firm 1992,280 billion cubic meter of sewage load, produces the sludge 2005 of moisture content 80% or so
Ten thousand.With being put into operation in the 2000 Duo Zuo sewage treatment plants for building successively, national sludge yield will break through 30,000,000 tons quickly.
China's majority sludge from wastewater treatment plant processing method adopts thickening, and adopts sewage treatment plant's ratio of stabilizing treatment
Example less than 20%, the final disposal that have impact on sludge to a great extent not in place that most of sludge of sewage treatment plant is processed.
The excess sludge that sewage is produced during biochemical treatment is the negatively charged of moisture content abundant (moisture content up to 95% 99.5%)
The population of lotus, therefore dehydrating operations must be carried out to which, the quality and volume of sludge to reduce moisture percentage in sewage sludge, is reduced, so as to
In further disposing.At present, maximally effective reduction moisture percentage in sewage sludge approach is to select suitable flocculant according to concrete condition, its
Action principle is by adding flocculant, chemically reacts in sludge colloid layer surface, neutralizes the electric charge of sludge gelatinous layer, and leads to
Crossing bridging action promotes mud granule to be condensed into big granule flock, while make water spin off from mud granule, so as to
Improve dewatering performance of sludge., it is extremely urgent, the technique one of current sewage disposal all the time for how sewage processes this problem
It is directly to continue to use traditional handicraft, i.e. agent-feeding treatment, sludge dewatering is arranged outside waste water.In the agent-feeding treatment stage, " flocculant " is sewage
Requisite, so-called flocculant refers to the high molecular polymer that scattered fine-grained solids in liquid can be made to form flocculate；Press
Inorganic and organic two class can be totally divided into according to its chemical composition.Wherein inorganic flocculating agent includes inorganic flocculant and inorganic polymer
Flocculant；Organic flocculant includes Syn-Organic flocculants, natural organic high-molecular flocculant and microbial flocculant,
Theoretical basiss are that " coalescence " is theoretical, flocculant mainly by with just (bear) in electrical group with some water in bearing
(just) neutralization of detached granule is electrically difficult to, is that granule tends towards stability state in sewage so as to reduce sewage potential, and is utilized which
The property of polymerization causes these granules to concentrate, and separates eventually through physics or chemical method, and after agent-feeding treatment
Sludge separate after, its waste water is generally directly outer to be arranged, so the problem that prior art is present is：Using flocculant by sewage
It is disposable operation to be condensed, and not only makes flocculant cause substantial amounts of waste, also easily causes secondary pollution to environment.
Content of the invention
The technical problem to be solved in the present invention is：There is provided one kind can avoid flocculant from wasting and cause secondary dirt to environment
The sewage treatment process of the reduction flocculant usage of dye.
The present invention technical solution be：A kind of sewage treatment process for reducing flocculant usage, it is characterised in that：Bag
Include following steps：
Step 1, sludge is pumped into sludge concentration tank carries out sludge condensation operation；
Thickened sludge in step 1 is pumped into dynamic mixer by sludge pump by step 2；
Step 3, the medicinal liquid in medicinal liquid agitating pond is pumped into dosing pond carries out dosing proportioning；
Medicinal liquid of the dosing pond after dosing proportioning in step 3 is pumped into dynamic mixer through compound pump by step 4；
Step 5, dynamic mixer enter Mobile state mixing to thickened sludge and medicinal liquid；
Step 6, after step 5 dynamic is mixed sludge will pump into sludge filter press and carry out filter pressing operation；
Filter cake after step 6 filter pressing is discharged sludge filter press by step 7, and remaining filtrate enters filtrate sedimentation tank
Carry out concentration precipitation；
Step 8, the supernatant in sedimentation tank is pumped into medicinal liquid agitating pond carries out uniform stirring；
Step 9, the operation of repeat step 3；
Step 10, the precipitate in filtrate sedimentation tank in step 7 is extracted out from bottom of pond, and importing sludge concentration tank carries out step
6 operations；
After using above scheme, compared with prior art, the present invention has advantages below：Filtrate collection after by mud-water separation
Middle precipitation, extracting supernatant carries out the important component part of flocculant decrement production, and volume is bigger, and filtrate settling ratio is higher.?
Filtrate sedimentation tank after sludge dewatering after waste water importing filter pressing machine room is precipitated, and installs water pump additional, and pipe laying extracts supernatant
Dosing pond between pressure mud is imported, is replaced clear water to mix medicine, is constituted utilization process flow process.Wastewater recycling device, using waste water in
" flocculant " molecule content, reduces " flocculant " production consumption, not only can so avoid flocculant from wasting, save flocculant
Consumption, and do not have outside industrial wastewater and arrange, be internally circulated all the time, it is to avoid secondary pollution.
Preferably, remaining filtrate enters filtrate sedimentation tank to carry out concentrating precipitation to specifically refer to the dirt produced at sludge pump
Mud enters filtrate sedimentation tank through mechanical dehydration, the filtrate by mud, after water is separated；The filtrate so entered in filtrate sedimentation tank contains
Some flocculating agent molecules are more, and the supernatant recovery utilization rate after precipitate and separate is higher.
As improvement, it is also equipped with described medicinal liquid agitating pond for detecting the electron concentration of flocculant concentration in stirring pool
Measuring instrument；As the presence of electron concentration measuring instrument can be with scientific and effective regulation and control " flocculant " consumption.
Preferably, described filtrate sedimentation tank including water inlet, outlet and mud discharging mouth, described mud discharging mouth is located at
The bottom of sedimentation tank, described water inlet and outlet are all located on sedimentation tank pool wall and the height of water inlet is less than outlet
Highly；Such structure can ensure that and effectively precipitate filtrate that the mud of bottom can be discharged in time, and be sunk by filtrate
It is supernatant in filtrate sedimentation tank that shallow lake pond is sent into when making up a prescription pond.
Used as improvement, also having in described filtrate sedimentation tank is used for detecting the turbid of filtrate muddiness degree in filtrate sedimentation tank
Degree detector, in filtrate sedimentation tank, such benefit is can to detect that filtrate is precipitated in time to described Turbidity measurement instrument
Muddy degree in pond, enters unnecessary outstanding solidifying agent molecule into dosing pond after float can be caused further to precipitate again.
As improvement, in described filtrate sedimentation tank, there is the chromaticity detector for being used for detecting colourity in filtrate sedimentation tank,
The induction apparatuss of described chromaticity detector are installed in the middle part of filtrate sedimentation tank；In sedimentation tank, the colourity of precipitated liquid is also that reflection is heavy
One of performance of concentration of suspension in the pond of shallow lake, so it is dense to set up the float that chromaticity detector further can be detected in sedimentation tank
Degree.
As improvement, concentration of suspension detector, described concentration of suspension inspection in described filtrate sedimentation tank, is additionally provided with
Survey the middle part of the induction apparatuss installed in filtrate sedimentation tank of instrument；Float detector can also further detect the suspension in sedimentation tank
The concentration of thing, multinomial detection is so that it is guaranteed that the liquid entered in dosing stirring pool is the supernatant containing outstanding solidifying agent.
Figure of description
Sewage treatment process figure of the accompanying drawing 1 for prior art.
Sewage treatment process figure of the accompanying drawing 2 for the present invention.
Work model of the accompanying drawing 3 for the filtrate sedimentation tank of the present invention.
Description of the drawings：U0, the heavy speed of retention, II, the movement locus of the granule of u0, the movement locus of the granule of II `, u0, A：
Filtrate sedimentation tank surface area,
Specific embodiment
As can be seen from Figure 1 in the current sewage disposal of China, sludge treating block technological process is formed after sludge dewatering
Mud cake outward transport is disposed, and dumps use after mud-water separation outside filtrate mixing shower water, and some enterprises enter environment the waste water that discharges, or
Wastewater inlet is imported, sewage disposal production line is entered, is formed and is repeated to process, cause resource waste and pollution environment.
Sewage disposal used " flocculant " belongs to macromolecular compound, with " pole is dissolved in water " same characteristic, with hydrone
For substrate flocculated suspension thing, coagulating sedimentation, stable chemical nature, after " flocculant " is mixed with primary sludge after dilution, trip is formed
From molecule, through dewatering technology of mud flow process, mud-water separation, after separating, water body carries a large amount of " flocculant " molecules and is discharged, I
With dosing pond " flocculant " levels as reference data, using titrimetry, settling ratio, do chemical content test, calculate
After mud-water separation, in filtrate, contained " flocculant " content in more than 0.22mg/L, has very high value.
Experimental comparison：
We are studied from sludge treating block for point of penetration, are keeping, in original sludge treatment technique flow process, creating
Invention, newly designs a set of technological process, and waste water recycling reduces the production consumption of " flocculant ".
As shown in Figure 2：A kind of sewage treatment process for reducing flocculant usage, it is characterised in that：Comprise the steps：
Step 1, sludge is pumped into sludge concentration tank carries out sludge condensation operation；
Thickened sludge in step 1 is pumped into dynamic mixer by sludge pump by step 2；
Step 3, the medicinal liquid in medicinal liquid agitating pond is pumped into dosing pond carries out dosing proportioning；
Medicinal liquid of the dosing pond after dosing proportioning in step 3 is pumped into dynamic mixer through compound pump by step 4；
Step 5, dynamic mixer enter Mobile state mixing to thickened sludge and medicinal liquid；
Step 6, after step 5 dynamic is mixed sludge will pump into sludge filter press and carry out filter pressing operation；
Filter cake after step 6 filter pressing is discharged sludge filter press by step 7, and remaining filtrate enters filtrate sedimentation tank
Carry out concentration precipitation；
Step 8, the supernatant in sedimentation tank is pumped into medicinal liquid agitating pond carries out uniform stirring；
Step 9, the operation of repeat step 3；
Step 10, the precipitate in filtrate sedimentation tank in step 7 is extracted out from bottom of pond, and importing sludge concentration tank carries out step
6 operations；
Can ensure that the supernatant in filtrate sedimentation tank is again introduced into medicinal liquid agitating pond through above step, maximum is good
Place is that of avoiding secondary pollution, so as to reduce " three cause effect " as flocculant secondary pollution is caused (teratogenesis, mutagenesis,
Carcinogenic), remaining filtrate enters filtrate sedimentation tank and carries out concentrating precipitation to specifically refer to the sludge produced at sludge pump through machinery
Dehydration, the filtrate after mud, water are separated enter filtrate sedimentation tank, and the filtrate for so entering filtrate sedimentation tank contains more flocculation
Agent molecule, but remain on also more mud granule thing simultaneously, proceed flocculation process, sludge in filtrate sedimentation tank
Particulate matter can sink to the bottom of filtrate sedimentation tank in flocculation process, and supernatant is then to have contained substantially residue without granule
Supernatant is pumped into medicinal liquid agitating pond and replaces original clear water to mix medicine by the liquid of flocculant, when dosing again can be greatly reduced,
The consumption of flocculant, while be also equipped with described medicinal liquid agitating pond for detecting the electron concentration of flocculant concentration in stirring pool
Measuring instrument；Carried out with electronics concentration measuring apparatus real-time Concentration Testing can with the concentration levels in real-time detection medicinal liquid agitating pond,
So as to prevent flocculant usage excessive.Described filtrate sedimentation tank including water inlet, outlet and mud discharging mouth, described spoil disposal
Mouthful it is located at the bottom of sedimentation tank, described water inlet and outlet is all located on sedimentation tank pool wall and the height of water inlet is less than out
The height at the mouth of a river；It is convenient that such structure causes supernatant to extract, and the sedimentation effect of filtrate sedimentation tank is preferable；Described filtrate
There are the Turbidity measurement instrument for being used for detecting the filtrate muddiness degree in filtrate sedimentation tank, described Turbidity measurement instrument peace in sedimentation tank
It is mounted in filtrate sedimentation tank, such benefit is can to detect the muddy degree in filtrate sedimentation tank in time, can causes to suspend
Thing is entered unnecessary outstanding solidifying agent molecule into dosing pond after further precipitating again；Also having in described filtrate sedimentation tank is used for detecting
The chromaticity detector of colourity in filtrate sedimentation tank, the induction apparatuss of described chromaticity detector are arranged on the middle part of filtrate sedimentation tank；
In sedimentation tank, the colourity of precipitated liquid is also to reflect one of performance of concentration of suspension in sedimentation tank, so set up chromaticity detector can
Further to detect the concentration of suspension in sedimentation tank；Concentration of suspension detector, institute is additionally provided with described filtrate sedimentation tank
The induction apparatuss of the concentration of suspension detector that states are installed in the middle part of filtrate sedimentation tank；Float detector further can also be examined
The concentration of the float that surveys in sedimentation tank, multinomial detection is so that it is guaranteed that the liquid entered in dosing stirring pool is containing outstanding solidifying agent
Supernatant；The shape of described sedimentation tank can be square, rectangle, circular or oval.
For filtrate sedimentation tank, the hypothesis condition of preferable sedimentation tank：
1. granule carries out free settling, and size, density, heavy speed are constant；
2. on the bottom horizontal flow sheet cross-section of river, each point flow velocity is equal, keeps constant；
3. granule sinks to bottom of pond and is removed, and does not return again in recirculated water.
Can find out from the work model of filtrate sedimentation tank：
The heavy speed u0 of retention
The movement locus that setting tool has the granule of heavy speed u0 are straight line III.
Consideration bottom horizontal flow sheet：
Consideration sinking direction：
SoAnd ∵∴
(A：Filtrate sedimentation tank surface area)
Therefore, u0 is numerically equal to the flow of unit area, referred to as " surface loading "
The heavy speed of retention：The heavy speed of smallest particles in the caned granule for all removing of sedimentation tank.
The description does not have restricted, and shown in figure is also one of embodiments of the present invention, and actual structure is not
It is confined to this.If generally speaking one of ordinary skill in the art is enlightened by which, in the feelings without departing from the invention objective
Under condition, the frame mode similar to the technical scheme and embodiment is designed without creative, all should belong to the guarantor of the present invention
Shield scope.
Claims (5)
1. a kind of reduce flocculant usage sewage treatment process, it is characterised in that：Comprise the steps：
Step 1, sludge is pumped into sludge concentration tank carries out sludge condensation operation；
Thickened sludge in step 1 is pumped into dynamic mixer by sludge pump by step 2；
Step 3, the flocculant in medicinal liquid agitating pond is pumped into dosing pond is carried out plus flocculant proportioning；
Medicinal liquid of the dosing pond after dosing proportioning in step 3 is pumped into dynamic mixer through compound pump by step 4；
Step 5, dynamic mixer enter Mobile state mixing to thickened sludge and medicinal liquid；
Step 6, after step 5 dynamic is mixed sludge will pump into sludge filter press and carry out filter pressing operation；
Filter cake after step 6 filter pressing is discharged sludge filter press by step 7, and remaining filtrate enters filtrate sedimentation tank and carries out
Concentrate precipitation；There is the Turbidity measurement for being used for detecting the filtrate muddiness degree in filtrate sedimentation tank in described filtrate sedimentation tank
Instrument, described Turbidity measurement instrument is in filtrate sedimentation tank；
Step 8, the supernatant in sedimentation tank is pumped into medicinal liquid agitating pond carries out uniform stirring；
Step 9, the operation of repeat step 3；
Step 10, the precipitate in filtrate sedimentation tank in step 7 is extracted out from bottom of pond, and importing sludge concentration tank carries out step 2 and grasps
Make.
2. according to claim 1 a kind of reduce flocculant usage sewage treatment process, it is characterised in that:Described medicine
It is also equipped with liquid stirring pool for detecting the electron concentration measuring instrument of flocculant concentration in stirring pool.
3. according to claim 1 a kind of reduce flocculant usage sewage treatment process, it is characterised in that：Described filter
Liquid precipitate pond includes water inlet, outlet and mud discharging mouth, and described mud discharging mouth is located at the bottom of sedimentation tank, described water inlet and
Outlet be all located on sedimentation tank pool wall and water inlet height less than outlet height.
4. according to claim 1 a kind of reduce flocculant usage sewage treatment process, it is characterised in that：Described filter
The induction apparatuss for also having the chromaticity detector for being used for detecting colourity in filtrate sedimentation tank, described chromaticity detector in liquid precipitate pond are pacified
It is mounted in the middle part of filtrate sedimentation tank.
5. according to claim 1 a kind of reduce flocculant usage sewage treatment process, it is characterised in that：Described filter
Concentration of suspension detector is additionally provided with liquid precipitate pond, and the induction apparatuss of described concentration of suspension detector are precipitated installed in filtrate
The middle part in pond.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410333611.8A CN104370432B (en) | 2014-07-14 | 2014-07-14 | A kind of sewage treatment process for reducing flocculant usage |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410333611.8A CN104370432B (en) | 2014-07-14 | 2014-07-14 | A kind of sewage treatment process for reducing flocculant usage |
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| Publication Number | Publication Date |
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| CN104370432B true CN104370432B (en) | 2017-03-15 |
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| FI20165758A (en) * | 2016-10-07 | 2018-04-08 | Kemira Oyj | Methods and systems for controlling hydrophobic conditions and soiling in water-intensive processes |
| CN107399897A (en) * | 2017-08-04 | 2017-11-28 | 胜利油田龙玺石油工程服务有限责任公司 | A kind of drilling mud processing unit for recycling sewage |
| CN111574020A (en) * | 2020-04-20 | 2020-08-25 | 广州珞珈环境技术有限公司 | River and lake sludge conditioning method and system |
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| JP5164763B2 (en) * | 2008-09-22 | 2013-03-21 | 株式会社クボタ | Belt type concentrator and belt cleaning method for belt type concentrator |
| CN101935140B (en) * | 2010-07-23 | 2012-08-29 | 无锡市通用机械厂有限公司 | Dehydration treatment method for tail water sludge of water-work and special apparatus thereof |
| CN203212445U (en) * | 2013-04-12 | 2013-09-25 | 浙江金佰利环境科技有限公司 | Sludge treatment system |
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