CN1164508C - Integral flocculation-biochemical sewage treating method and equipment - Google Patents

Integral flocculation-biochemical sewage treating method and equipment Download PDF

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Publication number
CN1164508C
CN1164508C CNB011076305A CN01107630A CN1164508C CN 1164508 C CN1164508 C CN 1164508C CN B011076305 A CNB011076305 A CN B011076305A CN 01107630 A CN01107630 A CN 01107630A CN 1164508 C CN1164508 C CN 1164508C
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China
Prior art keywords
waste water
biochemical
district
flocculation
wastewater
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Expired - Fee Related
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CNB011076305A
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CN1308029A (en
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万金泉
马邕文
张勇
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South China University of Technology SCUT
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South China University of Technology SCUT
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Priority to CNB011076305A priority Critical patent/CN1164508C/en
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

Abstract

The present invention relates to a wastewater treatment technology, particularly to a wastewater treatment method integrated with flocculation and biochemistry and a used device thereof. The wastewater treatment technology carries out structure reconstruction to a traditional precipitation device without separating precipitation from biochemical treatment, and 600 to 800 ppm of aluminum sulfate and 60 to 80 ppm of anion polyacrylamide PAM are added in wastewater to be treated by the total quantity of wastewater, and are used as flocculating agents. The device has the advantages of small occupation area, easy operation and short stay time. The method has the advantages of simple technology to treat wastewater and short treatment time, and compared with a traditional two-stage method, the removal rates of SS, BOD and COD are improved by 20 to 30% and can all reach more than 80%. The device has excellent application prospect and economic and social benefits.

Description

Flocculation-biochemical integrated method of wastewater treatment and equipment
The present invention relates to wastewater processing technology, refer to flocculation-biochemical integrated method of wastewater treatment and equipment used thereof particularly.
Along with the pay attention to day by day of people to environment protection and water resources, wastewater processing technology is just causing people's great attention.At present, the method that is used to handle various waste water is more, but generally all needs to adopt bi-level treatment mode, i.e. one-level precipitation process, secondary biochemical treatment.The bi-level treatment method required equipment floor space of waste water is big, and investment is big, complicated operation, and the treatment time is long, and the clearance of every contamination index is also lower in the waste water.Belong to periodical operation in addition thereby processing efficiency is low.The various new wastewater processing technology that grew up in recent years is as " Chinese water supply and drainage ", and 1999, NO.7, the 4-7 exercise question discloses a kind of catalyzed oxidation method of wastewater treatment for " research of wet oxidation Treating Municipal Sewage factory mud "; " environmental technology ", 1997, NO.6, the 23-26 exercise question discloses a kind of membrane sepn wastewater processing technology for " new development of sewage disposal technology "; " Treatment of Industrial Water ", 2001, NO.1,9-12 exercise question disclose a kind of flow lifting type Sludge Bed wastewater processing technology etc. for " new development of industrial wastewater pollution control method ", and aforesaid method is all not mature enough or invest during because of practicality and be difficult to apply too greatly owing to technology.
The objective of the invention is to overcome the problem that above-mentioned prior art exists, propose a kind of method of wastewater treatment and flocculation-biochemical reaction integration apparatus that adopts the special highly effective flocculation agent, it is simple to operate, and the expense of handling waste water is low, effective, treatment time is short, the processing efficiency height.
The objective of the invention is to realize by following measure:
A kind of flocculation-biochemical integrated method of wastewater treatment mainly is to add flocculation agent by following method respectively:
(a) in pending waste water, add Tai-Ace S 150 by wastewater flow rate 600~800ppm; (b) adding molecular structural formula in the hybrid reaction district is (CH 2-CH) nCONH 2, n scope wherein: 10000~20000 anionic polyacrylamide PAM, add-on is for by waste water total amount 60~80ppm.
Design a kind of flocculation-biochemical integrated sewage treatment equipment, it comprises recirculating zone, hybrid reaction district, biochemical reaction zone, sedimentation and filtration district, it is characterized in that: this waste water treater population place is provided with an efflux aerator; One end of trunnion is relative with efflux aerator, and the other end communicates with the hybrid reaction district, and trunnion is sleeved on a pair of tubaeform skirt and encloses in the recirculating zone of formation; The sewage treatment equipment cover top portion is hung with the multilayer insulating panel that material is glass reinforced plastic or carbon steel every 30~50cm, the space that the outside in hybrid reaction district and multilayer insulating panel constitute is a biochemical reaction zone, and the biochemical reaction zone outside is the sedimentation and filtration district with the space that the circumferential shell of sewage treatment equipment constitutes.
The present invention compared with prior art has following advantage:
1, processing efficiency height of the present invention, effective.Aspect flocculant for treating waste water, the present invention is according to the characteristic of pollutent colloid z-current potential and the requirement of aerobic biochemical treatment process in the waste water, find out composite flocculation agent and best applications processing condition thereof, thereby effect rapid precipitation such as colloid pollution thing in the waste water is efficiently built bridge, flocculated, absorption are got off.Before the present invention makes, the flocculation treatment of waste water mainly is to add general flocculation agent to handle, floc sedimentation forms slowly, about 1 hour of separation time, the clearance of SS, BOD, COD etc. only is about 50%, and when adopting this composite flocculation agent and processing method to handle waste water, floc sedimentation forms soon, and the sedimentation separation time is lacked.The sedimentation separation time only needs about 15 minutes when being used to handle paper mill effluent, and SS, BOD, COD clearance can reach more than 70%.
Also not influence of microbic activity when 2, the composite flocculation agent selected for use of the present invention is handled aerobic biochemical.
3, the present invention is according to the characteristics of the fluidisation growth of floc sedimentation and the requirement of aerobic biochemical treatment, traditional settling apparatus is carried out texture improvement, need not precipitation, biochemical treatment separately, thereby it is big to have overcome occupation area of equipment of the prior art, complicated operation, and shortcoming such as total residence time is long, developing a kind of collection mixes, reaction, clarification is dammed and aerobic biochemical is handled efficient waste water treater in one, this treater bottom can form the automatically updated fluidized-bed that waste water is had the adsorption filtration effect by suspended substance in the waste water, and the aerobic microbiological on the biological lamina membranacea carries out biochemical treatment to waste water, so just shorten the time of handling waste water greatly, improved treatment effect and efficient.The clearance of SS, BOD, COD can improve 20~30% respectively than traditional waste water two step method when the present invention was used to handle waste water, all can reach more than 80%, and simultaneously, the residence time during wastewater treatment is by original shortening to about 4 hours more than 6~8 hours.
4, working cost of the present invention is low, is easy to industrialization; Simple to operate, easily apply, fabulous application prospect is arranged.
In sum, the present invention has good economic benefit and social benefit.
Fig. 1 is a flocculation-biochemical integrated sewage treatment equipment structural representation.
By following embodiment and accompanying drawing thereof the present invention is done further detailed retouching:
Embodiment 1:
As shown in Figure 1, flocculation used in the present invention-biochemical integrated sewage treatment equipment 1 place that enters the mouth is provided with a general efflux aerator 2; One end of trunnion 3 is relative with efflux aerator 2, and the other end communicates with hybrid reaction district 5, and trunnion 3 is sleeved on a pair of tubaeform skirt and encloses in the recirculating zone 4 of formation; The sewage treatment equipment cover top portion is hung with multilayer insulating panel 8 every 30~50cm, 5 weeks of hybrid reaction district are biochemical reaction zone 6 with the space that multilayer insulating panel 8 constitutes laterally, and the space that the circumferential shell of biochemical reaction zone 6 outsides and sewage treatment equipment constitutes is sedimentation and filtration district 7.9 is water outlet, and 10 is mud discharging mouth.
Be provided with a general efflux aerator 2 at inlet 1 place of device bottom, like this, when waste water is flowed through efflux aerator 2, high velocity flow with waste water is a kinetic energy, suck a large amount of air, waste water, air mixed liquid intense mixing in trunnion 3 stirs, make airborne oxygen transfer to mixed solution rapidly, in the active sludge that these oxygen help being promoted by recirculating zone 4 and equipment in multilayer insulating panel 8 on the existence of aerobic microbiological, thereby accelerated microorganism colonization and formed many plates microbial film, the carrying out that also helps pollutent aerobic biochemical reaction in microorganism and the waste water, simultaneously, hang the multilayer insulating panel made from glass reinforced plastic or carbon steel every 30~50cm at the top of equipment.
Present embodiment waste water is the deinking wastewater of paper mill import mixed paper, outward appearance is that the waste water of grey black adds the flocculation agent Tai-Ace S 150 by waste water total amount 600ppm, 1 place squeezes into treatment facility with water pump by inlet, waste water enters hybrid reaction district 5 promote the certain activity mud by trunnion 3 in recirculating zone 4 after, by 5 overflows of hybrid reaction district to biochemical reaction zone 6.5 add by waste water total amount 60ppm flocculation agent anionic polyacrylamide PAM n=13000 in the hybrid reaction district, the waste water small portion that goes out biochemical reaction zone 6 flows into recirculating zone 4, most of sedimentation and filtration district 7 that flows into, clear water in the sedimentation and filtration district after sedimentation and filtration is handled, enter water out 9 device for transferring by top, the bottom active sludge enters mud-removing bucket, and mud-removing bucket top active sludge partial reflux is gone into recirculating zone 4, and the unnecessary active sludge in bottom is discharged treatment facility through mud discharging mouth 10.
The main design parameters of the employed flocculation of present embodiment-biochemical integration apparatus is as follows:
1, the design backflow water yield is 3~5 times of flooding velocity.
2, water total residence time in the pond is 4 hours.
3, water residence time in the hybrid reaction district is 120s, and the biochemical reaction zone residence time is 2 hours.
4, the nozzle flow velocity is 6~9m/s.
5, biochemical reaction zone exit velocity 30~35mm/s.
6, hybrid reaction district exit velocity 50~80mm/s.
7, hybrid reaction district inlet velocity 40~50mm/s.
8, sedimentation and filtration district upflow velocity 0.8~1.1mm/s.
9, sedimentation and filtration district height is not less than 1.5m.
Press aforesaid device and condition, 4 hours treatment times.It is as shown in table 1 that its characteristic and after treatment effect and traditional method are compared the result, and wherein traditional method is handled and adopted general flocculation agent, adopts precipitation, biochemical bi-level treatment, and total residence time is 6 hours.
Table 1
SS,mg/l COD cr,mg/l BOD 5,mg/l
Raw wastewater: 582 1,180 387
The tradition method is handled the back: 227 519 224
Tradition method clearance: 61% 56% 42%
Method of the present invention is handled the back: 16 80 43
Clearance of the present invention: 97% 93% 89%
Embodiment 2:
Use equipment and the condition thereof of embodiment 1, waste water is certain urban domestic wastewater, and outward appearance is a lark, adopts the present invention, and its treatment condition are: Tai-Ace S 150, PAM n=13000 consumption are respectively by waste water total amount 700ppm, 70ppm, 5 hours treatment times.It is as shown in table 2 that its characteristic and after treatment effect and traditional method are compared the result, and wherein traditional method is handled and adopted general flocculation agent, adopts precipitation, biochemical bi-level treatment, and total residence time is 7 hours.
Table 2
SS,mg/l COD cr,mg/l BOD 5,mg/l
Raw wastewater: 362 3,150 2130
The tradition method is handled the back: 67 320 280
Tradition method clearance: 81% 89% 87%
Method of the present invention is handled the back: 25 120 98
Clearance of the present invention: 93% 96% 95%

Claims (3)

1, a kind of flocculation---biochemical integrated method of wastewater treatment is characterized in that, adds flocculation agent by following method respectively:
(a) adding is by the Tai-Ace S 150 of waste water total amount 600~800ppm in pending waste water, and the waste water behind the adding Tai-Ace S 150 enters the hybrid reaction district;
(b) adding molecular structural formula in hybrid reaction district (5) is (CH 2-CH) nCONH 2The anionic polyacrylamide PAM of n scope: 10000-20000 wherein, add-on is for by waste water total amount 60~80ppm, waste water by the overflow of hybrid reaction district to biochemical reaction zone, the waste water small portion that goes out biochemical reaction zone flows into the recirculating zone, most of sedimentation and filtration district that flows into.
2, a kind of flocculation---biochemical integrated sewage treatment equipment, it comprises recirculating zone (4), hybrid reaction district (5), biochemical reaction zone (6), sedimentation and filtration district (7), it is characterized in that: locate to be provided with an efflux aerator (2) at waste water treater bottom inlet (1); One end of trunnion (3) is relative with efflux aerator (2), and the other end communicates with hybrid reaction district (5), and trunnion (3) is sleeved on a pair of tubaeform skirt and encloses in the recirculating zone (4) of formation; The sewage treatment equipment cover top portion is hung with multilayer insulating panel (8) every 30~50cm, the space that the outside in hybrid reaction district (5) and multilayer insulating panel (8) constitute is biochemical reaction zone (6), and biochemical reaction zone (6) outside is sedimentation and filtration district (7) with the space that the circumferential shell of sewage treatment equipment constitutes.
3, a kind of flocculation according to claim 2---biochemical integrated sewage treatment equipment is characterized in that the material of the multilayer insulating panel (8) in the biochemical reaction zone (6) is glass reinforced plastic or carbon steel.
CNB011076305A 2001-03-09 2001-03-09 Integral flocculation-biochemical sewage treating method and equipment Expired - Fee Related CN1164508C (en)

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Application Number Priority Date Filing Date Title
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100484886C (en) * 2004-08-27 2009-05-06 华南理工大学 Process for treatnig paper-making waste water of waste paper
CN101182087B (en) * 2007-11-05 2011-11-30 上海市政工程设计研究总院 Integrated biology aerobic sedimentation tank
CN110282816A (en) * 2019-06-14 2019-09-27 盐城恒清河湖整治有限公司 A kind of high-speed service area sewage disposal device

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