CN1554603A - Process and method for treating city waste warter - Google Patents
Process and method for treating city waste warter Download PDFInfo
- Publication number
- CN1554603A CN1554603A CNA2003101193681A CN200310119368A CN1554603A CN 1554603 A CN1554603 A CN 1554603A CN A2003101193681 A CNA2003101193681 A CN A2003101193681A CN 200310119368 A CN200310119368 A CN 200310119368A CN 1554603 A CN1554603 A CN 1554603A
- Authority
- CN
- China
- Prior art keywords
- sewage
- anaerobic
- domestic sewage
- city domestic
- handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention provides life sewage treating process and method suitable for middle and small city, belongs to the field of environment protecting technology and aims at lowering sewage treating cost and power consumption and eliminating chroma, heavy metal and hard-to-degrade organic matter. The technological scheme includes pre-treatment of sewage with grille and silt basin, anaerobic treatment in efficient anaerobic reactor to degrade organic matter in sewage into marsh gas and stabilize heavy metal ion, eliminating anaerobic sludge in the secondary deposition tank and draining, and concentrating and dewatering sludge and landfilling. The present invention has the features of high efficiency, low power consumption, small covered area, and low cost.
Description
Technical field
The present invention relates to the technology and the method for sanitary sewage disposal, belong to environment protection and water pollution control field.
Background technology
It is one of serious environmental problems of facing of China that water pollutes.It is 3.3% that China's treatment rate of domestic sewage is only 1991, some small and medium-sized cities particularly, because the shortage of fund, municipal effluent is intractable especially.A large amount of sewage directly discharges 82% pollution that is subjected in various degree that causes in 532 rivers, the whole nation.A large amount of sewage directly discharge, and not only destroy ecology, aggravate water shortage, are also seriously endangering production and the human beings'health and the safety of industrial or agricultural.
At present, activated sludge process is mainly adopted in municipal sewage treatment both domestic and external.Its processing technological flow is as follows:
The sewage that comes from water drain enters the municipal sewage plant, enter settling pit after at first holding back suspended substance big in the sewage and floating matter through grid, remove heavy sand grains in the sewage, enter preliminary sedimentation tank subsequently and remove the organic particle that part suspends by the gravitational settling effect.Enter the aerobic aeration pond then, the oxygen that microorganism utilizes blower fan to provide is finished the degraded to the partial organic substances in the sewage, finishes separating of microorganism mud and water in second pond, the supernatant liquor discharging.Be enough microorganisms in the maintenance aeration tank, the necessary partial reflux of the mud in the second pond, excess sludge enters sludge treating system.
Excess sludge at first enters sludge thickener, utilizes gravity further to concentrate, and carries out sludge treatment subsequently.Method for sludge treatment generally carries out anaerobic digester earlier to be handled, and then by mechanical dehydration, the mud with dehydration burns or the landfill disposal at last.
Wastewater Treated by Activated Sludge Process waterside town city sewage is mainly made good use of oxygen animalcule and is removed biodegradable organism in the sewage, and existing questions is:
1, the construction investment of municipal sewage plant is huge
It is estimated that the China's water pollution control in 1996～2000 years investment needs 90,000,000,000 yuan, only will account for 1/3rd of China's water pollution control investment, about more than 300 hundred million yuans in the fund aspect the construction municipal sewage plant.So Duo investment and since China real national conditions, for city, especially small and medium cities, just do not have ability to bear the municipal wastewater treatment plant construction investment of great number at all.In order to improve the municipal sewage treatment situation, have to in the world the loan, but these subsidies generally have superimposed clause, might damage the interests of the national parties concerned in order to obtain these funds.For this reason, it is urgent day by day to improve the sewage disposal investment situation of great number.
2. power consumption height, floor space are big
The core processing unit of sewage disposal process by activated sludge process is the aerated reaction pond.Dissolve into a large amount of oxygen by aeration reinforcing here, the confession aerobic microbiological utilizes the organism in the degradation of sewage.The power consumption of blast aeration accounts for 1/3 ~ 1/2 of power consumption in traditional sewage work, this has caused the additional phenomenon of present China municipal sewage plant again: even sewage work has built up, but can not run well owing to the working cost of great number.In addition, the organism of contained difficult degradation in the sewage, extremely difficult removal.In order to remove this part material, must prolong aeration time, its result causes the floor space of treatment facility, the increase of initial cost and working cost.Though also there is not the problem of land resources at present in China, along with the growth of economy, the cost issues in soil also can further become another factor of restriction municipal sewage treatment.
3. be difficult to effectively remove heavy metal and colourity and some hardly degraded organic substances.。
Because industrial sewage occupies higher ratio (can reach 50 ~ 60%), particularly some small and medium-sized cities in the sewage in the most cities of China, this phenomenon is even more serious, so heavy metal and chroma pollution problem are serious in the sewage.Colourity generally all is to be caused by organic compound such as some dyestuffs, because these organism are highly stable, utilizes the traditional wastewater treatment process to be difficult to remove.
Heavy metal exists with ion, colloid or complex compound state, and aerobic microbiological can't effectively be removed.What is more is changed into organic (as mercury), increases its toxicity.So utilize in the present treatment process and can not effectively remove heavy metal and colourity, should seek valid approach more.
Enter and contain some phenyl ring classes or long vessel used to hold grain at the imperial sacrifice compound in the industrial sewage in the municipal effluent, these materials are that aerobic bacteria is unserviceable.These organism are further degraded under the effect of various bacteriums after entering water body, further polluted-water.And, fact proved that more and more these materials are that Environmental Hormone one is originated greatly.So must remove the organism of these difficult degradations.
4. sludge output is big, organic content height, sludge treatment difficulty and cost height.
In the traditional cities sewage treatment process, sludge quantity takes place account for 0.3%～0.5% of the total amount of disposing of sewage volume.Traditional sludge treatment technique processing costs costliness accounts for 20%～50% of sewage work's overall running cost, and investment accounts for 30%～40% of sewage work's gross investment.The organism that can be transformed in the excess sludge is the organism that some can be dissolved, only accounts for 20 ~ 30% of excess sludge total amount.Because the organism in the excess sludge can not get good removal, the secondary pollution chance of excess sludge is quite big.In addition, because the excess sludge water content is big, the processing cost height.What mud stabilizing treatment facility was arranged in the existing sewage treatment facility in the whole nation is less than 1/4, treatment process and support equipment comparatively perfect less than 1/10.In present only tens sludge digestion tanks of China, that can normally move is few in number, the basic just not operation of some digester.Though some local sewage has obtained effective improvement, mud is not dealt carefully with and is disposed, and has caused secondary pollution.The processing of mud has become the key of the good operation of restriction sewage work.
Summary of the invention
For organism and reduction power consumption, minimizing floor space and the reduction investment cost of effectively removing organism, heavy metal, colourity and difficult degradation in the municipal effluent, the present invention proposes following technical scheme: after city domestic sewage 1 process grid 2, settling pit 3 pre-treatment, pass through following process successively:
Municipal effluent by efficient anaerobic processing unit 17 reactor for treatment after water outlet discharge after removing a spot of anaerobion through second pond 6, the excess sludge of efficient anaerobic processing unit 13 and second pond 6 is the 11 back ultimate disposals 12 of excess sludge processed after entering concentration basin 9, and the methane recovery that efficient anaerobic processing unit 13 is produced utilizes 14.
What anaerobic treatment unit 13 adopted is CGSB.
What anaerobic treatment unit 13 adopted is the normal temperature anaerobic reactor.
Most of organism in the municipal effluent is by 13 degradeds of anaerobic treatment unit.
Heavy metal in the sewage is stable in anaerobic treatment unit 13.
The colourity in the sewage and the organism of difficult degradation are removed by anaerobic treatment unit 13.
The methane recovery that anaerobic treatment unit 13 is produced utilizes 14.
The advantage of this technical process:
1. cut down the consumption of energy
Because anaerobic reaction does not need aeration, can save a large amount of power consumptions; Anaerobic reactor is the normal-temperature reaction device, need not improve the sewage temperature consumes energy; In addition the organism of the every degraded of anaerobic reactor 1kg will produce approximately contain 50 ~ 70% methane biogas 0.5m
3, these gases can be used as the utilization of fine fuel; This technical process is simple, and used power-equipment is few than traditional method, so can reduce the energy consumption of municipal sewage treatment.
2. reduce floor space and investment
The anaerobic reactor volumetric loading will be higher than aerobic reactor far away, and the anaerobic reactor organic loading can reach 10 ~ 20kgCOD/m
3And traditional activated sludge process generally has only 0.5kgCOD/m .d,
3.d, so just can reduce floor space.
High efficiency anaerobic reactor has more high-level efficiency than traditional anaerobic digestor, and this is that the water conservancy condition is good because it belongs to the anaerobic reactor of continous way, and aspect ratio is big, admittedly it is little to account for the dead band, the ground area is little, useful volume ratio height.Effectively degrade owing to the most of organic substance in the excess sludge is difficult in the anaerobic digestor in addition, in order to stablize excess sludge, can cause the prolongation of the residence time, it is big that reactor volume becomes.And the present invention adopts state-of-the art in the world at present anaerobic reactor-expanded granular sludge bed anaerobic reactor, adopts brand-new design, has improved the efficient of reactor.So, can reduce the residence time, reduce floor space and reduce investment.
Owing to compare with traditional technology in this technology, devices such as preliminary sedimentation tank, aeration tank have been reduced, and, can reduce floor space and reduce investment cost because the characteristic of anaerobic reactor water outlet has determined second pond, mud thickener and dehydration facility all than traditional method efficient height;
3. effectively remove hardly degraded organic substance in the sewage
Because organic degraded has been experienced hydrolysis, acidifying, product acid and has been produced the methane four-stage in anaerobic reactor.Like this for some as being difficult to the organism of being degraded and can becoming small-molecule substance or chain rupture is utilized by anaerobion of long-chain and band phenyl ring etc. by the acidication process by aerobic bacteria, improve the biological degradability of municipal effluent.
4. system's running is stable
Anaerobic reactor has higher anti impulsion load than aerobic reactor, so have better anti impulsion load for the variation of water quality and quantity, this solves some water quality and quantities variations small and medium-sized cities sewage greatly than traditional method and has more superiority.There is not the restriction of sludge bulking phenomenon and dissolved oxygen in anaerobic reactor, for the steady running of whole technology provides guarantee.
5. solved the handling problem of excess sludge effectively
Anerobes such as methanobacteria belong to extinct plants and animal, and its productive rate only is about 1/10 of an aerobic microbiological.Will reduce the sludge yield of municipal sewage plant so widely, alleviate the processing burden.In addition, because the salinity height of anaerobic sludge, water ratio is low, and dehydrating effect is better than aerobic sludge, reduces the dehydration expense.Because the refractory organics of cell, so the surplus sludge volume of this technology will be far smaller than the sludge yield that traditional digester is handled excess sludge, and be born in mud organic substance content and also will be lower than digester, reduce the possibility of mud secondary pollution.Finally like this will alleviate the risk of sludge treatment cost and secondary pollution greatly.
Beneficial effect of the present invention:
1. reduce power consumption, running cost and reduce floor space and cost of investment.2. effectively remove the organism of difficult degradations such as heavy metal in the sewage, colourity.3. reduce excess sludge production and secondary pollution risk.4. technology is simple, and convenient management is stable.5. can produce good energy gas.
Description of drawings
Fig. 1 is traditional cities sewage treatment process figure
Fig. 2 is a process flow sheet of the present invention
Embodiment
Fig. 2 is technical process of the present invention
After city domestic sewage 1 process grid 2, settling pit 3 pre-treatment, pass through following process successively:
Municipal effluent by efficient anaerobic processing unit 17 reactor for treatment after water outlet discharge after removing a spot of anaerobion through second pond 6, the excess sludge of efficient anaerobic processing unit 13 and second pond 6 is the 11 back ultimate disposals 12 of excess sludge processed after entering concentration basin 9, and the methane recovery that efficient anaerobic processing unit 13 is produced utilizes 14.
What anaerobic treatment unit 13 adopted is CGSB.
What anaerobic treatment unit 13 adopted is the normal temperature anaerobic reactor.
Most of organism in the municipal effluent is by 13 degradeds of anaerobic treatment unit.
Heavy metal in the sewage is stable in anaerobic treatment unit 13.
The colourity in the sewage and the organism of difficult degradation are removed by anaerobic treatment unit 13.
The methane recovery that anaerobic treatment unit 13 is produced utilizes 14.
Claims (7)
1. a city domestic sewage is handled and the purification process flow process, after city domestic sewage (1) process grid (2), settling pit (3) pre-treatment, it is characterized in that also will passing through following process successively:
(1) municipal effluent is by water outlet process after efficient anaerobic processing unit (13) reactor for treatment
(2) second pond (6) discharges after removing a spot of anaerobion
(3) excess sludge of efficient anaerobic processing unit (13) and second pond (6) is after entering concentration basin 9
(4) excess sludge processed (11) back ultimate disposal (12)
(5) the methane recovery utilization (14) that produced of efficient anaerobic processing unit (13).
2. handle and the purification process flow process according to the said a kind of city domestic sewage of claim 1, it is characterized in that: what adopted anaerobic treatment unit (13) is CGSB.
3. handle and the purification process flow process according to the said a kind of city domestic sewage of claim 1, it is characterized in that: what adopted anaerobic treatment unit (13) is the normal temperature anaerobic reactor.
4. handle and the purification process flow process according to the said a kind of city domestic sewage of claim 1, it is characterized in that: the most of organism in the municipal effluent is degraded by anaerobic treatment unit (13).
5. handle and the purification process flow process according to the said a kind of city domestic sewage of claim 1, it is characterized in that: the heavy metal in the sewage is stable in anaerobic treatment unit (13).
6. handle and the purification process flow process according to the said a kind of city domestic sewage of claim 1, it is characterized in that: the colourity in the sewage and the organism of difficult degradation are removed by anaerobic treatment unit (13).
7. handle and the method that purifies according to the said a kind of city domestic sewage of claim 1, it is characterized in that: the methane recovery utilization (14) that anaerobic treatment unit (13) are produced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101193681A CN1554603A (en) | 2003-12-23 | 2003-12-23 | Process and method for treating city waste warter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101193681A CN1554603A (en) | 2003-12-23 | 2003-12-23 | Process and method for treating city waste warter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1554603A true CN1554603A (en) | 2004-12-15 |
Family
ID=34338227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003101193681A Pending CN1554603A (en) | 2003-12-23 | 2003-12-23 | Process and method for treating city waste warter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1554603A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348515C (en) * | 2005-12-15 | 2007-11-14 | 湖南大学 | Integral treatment apparatus for urban sewage |
| CN100391856C (en) * | 2006-07-06 | 2008-06-04 | 彭世英 | Comprehensive domestic sewage utilizing system |
| CN101935131A (en) * | 2010-06-25 | 2011-01-05 | 余静 | Municipal sewage treatment method with zero energy consumption low sludge yield |
| CN102225825A (en) * | 2011-05-09 | 2011-10-26 | 余静 | Zero-energy-consumption enhanced AB (adsorption-biodegradation) treatment method for urban sewage |
| CN102887607A (en) * | 2011-07-20 | 2013-01-23 | 栾清杨 | Steel wire rope towing drum mechanical grid type sewage treatment method |
| CN103265152A (en) * | 2013-06-14 | 2013-08-28 | 山西太钢不锈钢股份有限公司 | Domestic sewage treatment method |
| CN106116079A (en) * | 2016-08-31 | 2016-11-16 | 柳州市润广科技有限公司 | A kind of sludge pre-treatment method |
| CN108996855A (en) * | 2018-09-20 | 2018-12-14 | 天津壹新环保工程有限公司 | A kind of municipal wastewater sludge joint disposal method and device |
| CN111689651A (en) * | 2020-06-22 | 2020-09-22 | 罗良胜 | Method for treating urban domestic sewage |
-
2003
- 2003-12-23 CN CNA2003101193681A patent/CN1554603A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348515C (en) * | 2005-12-15 | 2007-11-14 | 湖南大学 | Integral treatment apparatus for urban sewage |
| CN100391856C (en) * | 2006-07-06 | 2008-06-04 | 彭世英 | Comprehensive domestic sewage utilizing system |
| CN101935131A (en) * | 2010-06-25 | 2011-01-05 | 余静 | Municipal sewage treatment method with zero energy consumption low sludge yield |
| CN101935131B (en) * | 2010-06-25 | 2012-11-07 | 余静 | Municipal sewage treatment method with zero energy consumption low sludge yield |
| CN102225825A (en) * | 2011-05-09 | 2011-10-26 | 余静 | Zero-energy-consumption enhanced AB (adsorption-biodegradation) treatment method for urban sewage |
| CN102887607A (en) * | 2011-07-20 | 2013-01-23 | 栾清杨 | Steel wire rope towing drum mechanical grid type sewage treatment method |
| CN103265152A (en) * | 2013-06-14 | 2013-08-28 | 山西太钢不锈钢股份有限公司 | Domestic sewage treatment method |
| CN106116079A (en) * | 2016-08-31 | 2016-11-16 | 柳州市润广科技有限公司 | A kind of sludge pre-treatment method |
| CN108996855A (en) * | 2018-09-20 | 2018-12-14 | 天津壹新环保工程有限公司 | A kind of municipal wastewater sludge joint disposal method and device |
| CN111689651A (en) * | 2020-06-22 | 2020-09-22 | 罗良胜 | Method for treating urban domestic sewage |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1210216C (en) | Urban domestic sewage treatment process and its method | |
| CN100371270C (en) | Combined treatment process for manioc producing effluent | |
| CN101704615B (en) | Method for reducing sludge by adopting ultrasound-magnetic field coupling to disrupt sludge | |
| EA024049B1 (en) | Sludge treatment method and apparatus and application of said method and apparatus for wastewater bio-treatment | |
| CN1872745A (en) | Infiltration method for treating garbage | |
| CN1868926A (en) | Composite ecological treatment method of sewage for artificial wet land and its system | |
| CN1269747C (en) | Process for treating excess sludge | |
| CN101704611B (en) | Method for processing percolation liquid of domestic garbage | |
| CN101863583A (en) | Technology for treating piggery wastewater by methane tank, biofilm reactor and artificial wetland | |
| CN1554603A (en) | Process and method for treating city waste warter | |
| CN1225417C (en) | Saponin waste water handling method | |
| CN101597561A (en) | A kind of biogas-lift reinforced anaerobic reactor and application thereof | |
| CN1176034C (en) | Process and apparatus for urban refuse cite penetrating liquid by three stage plus one process | |
| CN103951140A (en) | Low concentration wastewater treatment technology adopting coupling of anaerobic built-in zero-valent iron reactor and constructed wetland | |
| CN109231673B (en) | A/O combined micro-electric field-Fe/C reinforced dephosphorization device and application thereof | |
| CN100337948C (en) | Comprehensive treatment method and system for sludge from city sewage processing | |
| CN105668781A (en) | Efficient anaerobic bioreactor for treating leachate of waste incineration plant | |
| CN112830637B (en) | Biochemical combined sewage treatment method capable of obtaining phosphorus-rich sludge | |
| CN201433210Y (en) | Methane lifting type intensified anaerobic reactor | |
| CN112158943B (en) | Biological trickling device based on living source dry garbage filler and application thereof | |
| CN201280478Y (en) | Starch wastewater ecological purification system | |
| CN211644786U (en) | Biochemical wetland ecological purification system for new rural domestic sewage | |
| CN211644987U (en) | New rural hilly area resident house domestic sewage purifies recycling system | |
| CN105110580A (en) | Sewage treatment process and sewage treatment system for sewage treatment process | |
| CN1850655A (en) | Baffle-board reactor and method for treating sewage by using it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |