CN104341041A - Treating device for high-concentration organic waste water - Google Patents

Treating device for high-concentration organic waste water Download PDF

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Publication number
CN104341041A
CN104341041A CN201310349161.7A CN201310349161A CN104341041A CN 104341041 A CN104341041 A CN 104341041A CN 201310349161 A CN201310349161 A CN 201310349161A CN 104341041 A CN104341041 A CN 104341041A
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China
Prior art keywords
reacting
biogas
tank
water
reaction
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CN201310349161.7A
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Chinese (zh)
Inventor
王雪峰
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NANTONG RUZE ENVIRONMENTAL ENGINEERING TECHNIQUE Co Ltd
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NANTONG RUZE ENVIRONMENTAL ENGINEERING TECHNIQUE Co Ltd
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Priority to CN201310349161.7A priority Critical patent/CN104341041A/en
Publication of CN104341041A publication Critical patent/CN104341041A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/28Anaerobic digestion processes
    • C02F3/2846Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • 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
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a treating device for high-concentration organic waste water. The treating device comprises a tank body, wherein the top of the tank body is provided with a biogas separating bag; the interior of the tank body is divided into a first reaction part, a second reaction bag and a third reaction part in sequence from bottom to top; a water discharging weir is arranged on the side wall of the tank body; a first three-phase separator and a second three-phase separator are respectively arranged between the first reaction part and the second reaction part and between the second reaction part and the third reaction part; a water distributor is arranged at the bottom of the first reaction part; a sludge enrichment device is arranged at the top of the third reaction part; the biogas separating bag comprises a solid-liquid returning pipe; the side wall of the biogas separating bag is provided with a first biogas lifting pipe and a second biogas lifting pipe; the water discharging weir is arranged at the upper part of the side wall of the tank body; and a water discharging pipe is arranged at the bottom of the water discharging weir. The treating device disclosed by the invention has the beneficial effects that the treating efficiency is higher, the pollutant treatment is more thorough, and the benefit for stable operation of following treatment units is achieved.

Description

A kind of high concentrated organic wastewater treatment unit
Technical field
The present invention relates to a kind of high concentrated organic wastewater treatment unit.
Background technology
Along with China's industrial expansion in recent years, especially foodstuffs industry, light industry etc. is flourish, and the generation of high concentrated organic wastewater improves year by year.So-called high concentrated organic wastewater refers to the waste water of COD (chemical oxygen demand (COD)) concentration more than 2000mg/L, and the feature of this effluent part is that organic concentration is high, heavy contamination, and intractability is large, and ton cost of water treatment is high.This effluent part is directly disposed in river course or lake if do not carried out effective improvement, easily causes body eutrophication, and then causes water quality deterioration and produce stink and toxicity, brings great harm to the drinking water safety of resident and environmental health.According to statistics national quantity of wastewater effluent in 1985 reach 34,200,000,000 t wherein trade effluent account for 75%, sanitary sewage accounts for 25%.Water pollution is caused in the unprocessed waters that directly enters of the sewage of more than 80%.Nineteen ninety, the whole nation total amount of sewage discharge amount of being was 41,400,000,000 t, and wherein trade effluent accounts for 72% sanitary sewage and accounts for 23%.As can be seen here, trade effluent is the primary pollution source in China waters all the time.Simultaneously due to discharge unit mainly some production enterprises of high concentrated organic wastewater.Therefore, only rely on regulation limitations enterprise governance and the discharge of country, enterprise is passive, loath often.Therefore seeking breakthrough and innovation on Treatment process, the Treatment process that its usage economy is higher, can create certain income for enterprise while improvement sewage, be the key fundamentally solving China's high concentrated organic wastewater problem.
Major technique at present for high concentrated organic wastewater comprises two large classes: 1, biochemical treatment process; 2, materialization treatment process.The organism of physico-chemical process mainly by adopting the modes such as concentrated, burnings, advanced oxidation to remove waste water, but need to add a large amount of oxygenants and chemical agent due to its processing mode, cause the processing cost of reality high, and easily produce danger wastes.Increase the weight of the processing load of enterprise.Therefore, only in the waste water of extremely indivedual industry, certain application is had.
Biochemical process refers to by the effect of microorganism degraded or transforms organic pollutant, and conventional method is Anaerobic Biotechnology and aerobic biotechnology.Due to the difference of microbe species, anaerobion has higher sludge activity and processing efficiency when processing high concentrated organic wastewater, and Anaerobic Biotechnology can produce biogas while process waste water simultaneously, and biogas can carry out reclaiming and utilizing as the energy.Therefore Anaerobic Biotechnology is described as the green technology of 21 century.In China, there is higher promotional value and using value.The development experience of anaerobic reactor anaerobic filter (AF), up-flow anaerobic sludge blanket (UASB), downstriker fixed-film reactor (DSFF), anaerobic attached microbial film expanded bed reactor (AAFEB), anaerobic fluidized bed (AFB), expanded granular sludge bed reactor (EGSB), anaerobic internal circulation reactor (IC), statistics shows, in the high efficiency anaerobic reactor developed, in anaerobic treatment engineering built both at home and abroad, the project of about 60% all have employed UASB reactor technology, EGSB reactor based on UASB reactor has also accounted for about 11% of anaerobic technique application sum, IC anaerobic reactor is also successfully applied in the process of various waste water in a large number.Visible, anaerobic reactor has obtained the generally accreditation of lot of domestic and foreign scholar as waste water treatment process that is efficient, low consumption, and achieves and apply widely.
Evaluate quality mainly following two aspects of an anaerobic reactor: 1, anaerobic sludge can be lived by effectively catching, keep reactor sludge concentration and sludge age; 2, good mixing effect can be provided, increase the mass-transfer efficiency (that is: whether anaerobic sludge is abundant with contacting of sewage) of system.
As UASB reactor, mainly there is the problems such as upflow liquid velocity is lower, occupation area of equipment is larger in traditional anaerobic reactor.Therefore easily cause water distributor water distribution uniformity difficulty, and the easy local stoppages of water distributor, make that the mass transfer effect of whole system declines, processing power and then reduction, locally sludge loading is too high to increase reactor, and then causes the risk of acidifying.So have developed again the higher anaerobic reactor IC reactor of upflow velocity for the problems referred to above, solve above-mentioned subproblem, but due to the significantly raising of upflow velocity, while reactor improves mass transfer effect, reactor is affected for the interception capacity of mud and restricts, therefore often reactor water outlet runs mud phenomenon seriously, is unfavorable for the steady running of reactor.
In sum, be there is certain contradiction between two evaluation indexes of anaerobic reactor, namely to provide good mass transfer effect, then the situation of sludge loss can be aggravated; To ensure the sludge concentration that reactor runs, then to sacrifice certain mass transfer effect.Therefore, for the further R and D of anaerobic reactor mainly for solving the problem of this paradox.
Summary of the invention
The object of the invention is to solve the problems referred to above in prior art existing for sewage treatment equipment, provide a kind of high concentrated organic wastewater treatment unit to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of high concentrated organic wastewater treatment unit, comprise tank body, wherein, described tank body top is provided with biogas and is separated bag, tank interior is separated out the first reacting part from down to up successively, second reacting part and the 3rd reacting part, tank wall is provided with effluent weir, between described first reacting part and the second reacting part, the first triphase separator and the second triphase separator is respectively equipped with between second reacting part and the 3rd reacting part, water distributor is provided with bottom first reacting part, 3rd reacting part top is provided with mud enricher, described biogas is separated bag bottom and is provided with solid-liquid return line, biogas is separated bag sidewall and is provided with the first biogas-lift pipe and the second biogas-lift pipe, effluent weir is provided with above tank wall, rising pipe is provided with bottom described effluent weir.
Preferably, described solid-liquid return line is successively through the 3rd reacting part, the second reacting part, and extend in water distributor, solid-liquid return line bottom is provided with into water divider.
Preferably, described first biogas-lift pipe through the 3rd reacting part and the second reacting part, contacts with the first triphase separator successively.
Preferably, described second biogas-lift pipe, through mud enricher, contacts with the second triphase separator.
Preferably, described rising pipe is also provided with backflow water pipe.
Preferably, described backflow water pipe is provided with motor-driven control valve and magnetic flow meter.
The beneficial effect that the present invention has:
1, solve the contradiction between the maintenance of anaerobic reactor mud with mass transfer effect, solve the underlying problem of anaerobic reactor technical development.
2, reactor can develop to high-altitude, and aspect ratio is greater than 3: 1, saves floor space.
3, divide three reaction zones to process, processing efficiency is higher, and Pollutant Treatment is more thorough.
4, anaerobic reactor water outlet race mud obviously reduces, and is conducive to the steady running of subsequent processing units.
5, running cost is lower, is mainly the power consumption of lift pump, without the need to additionaling power and chemical agent.
6, run not by the restriction of anaerobic sludge kind, common digested sludge can be adopted to inoculate.
7, there is the tolerance level of inhibitory substance higher for poisonous, increase the range of application of anaerobic biological technology.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of high concentrated organic wastewater treatment unit of the present invention.
Embodiment
See accompanying drawing 1, a kind of high concentrated organic wastewater treatment unit, comprise tank body, wherein, described tank body top is provided with biogas and is separated bag 2, tank interior is separated out the first reacting part 11 from down to up successively, second reacting part 12 and the 3rd reacting part 13, tank wall is provided with effluent weir 7, between described first reacting part 11 and the second reacting part 12, the first triphase separator 41 and the second triphase separator 42 is respectively equipped with between second reacting part 12 and the 3rd reacting part 13, water distributor 111 is provided with bottom first reacting part 11, 3rd reacting part 13 top is provided with mud enricher 6, described biogas is separated bag 2 top and is connected with biogas transfer lime 21, biogas is separated bottom bag 2 and is provided with solid-liquid return line 22, biogas is separated bag 2 sidewall and is provided with the first biogas-lift pipe 31 and the second biogas-lift pipe 32, effluent weir 7 is provided with above tank wall, rising pipe 8 is provided with bottom described effluent weir 7.
Preferably, described solid-liquid return line 22 is successively through the 3rd reacting part 13, second reacting part 12, and extend in water distributor 111, solid-liquid return line 22 bottom is provided with into water divider 5.
Preferably, described first biogas-lift pipe 31 through the 3rd reacting part 13 and the second reacting part 12, contacts with the first triphase separator 41 successively.
Preferably, described second biogas-lift pipe 32, through mud enricher 6,42 contacts mutually with the second triphase separator.
Preferably, described rising pipe 8 is also provided with backflow water pipe 9.
Preferably, described backflow water pipe 9 is provided with motor-driven control valve 91 and magnetic flow meter 92.
Main processes of the present invention is as follows: high concentrated organic wastewater is pumped to into water divider by lift pump, water inlet divider is made up of a cylindrical vessel and 6-8 root water inlet pipe, waste water is delivered in anaerobic reactor uniformly by water inlet pipe, first waste water enter the water distributor of anaerobic reactor, water distributor adopts stainless steel, invert shape makes, uniform several holes of layout on arcuate surface, waste water is under the conveying of high pressure, uniform spouting by hole, existence due to pressure causes water distributor not easily to block and realizes the object of water distribution uniformity.Waste water enters the first reacting part by after water distributor water outlet, high concentrated organic wastewater-fully contact with anaerobic sludge in the first reacting part, by the acidifying of anaerobism, acetoxylation and methane phase degradable organic pollutant, produces biogas simultaneously.Sewage, mud and biogas are under gas stripping, gas skirt in the first triphase separator is collected, the biogas being promoted to reactor head by the first biogas-lift pipe is separated bag, biogas is disposed to follow-up biogas storage device by biogas transfer lime, mud and the sewage after the first reacting part process, by solid-liquid return line, are back to reactor bottom, the internal recycling of realization response device, strengthen the agitaion of the first reacting part, improve mass transfer effect and processing efficiency.
Waste water is by after the first triphase separator, enter the second reacting part, because waste water is removed through the first reacting part major part organism, the methane quantity that the second reacting part produces is less, therefore waterpower flow velocity obviously reduces, so be the equal of the effect of precision processing section.The continuation of this stage carries out anaerobic biodegradation to waste water.The mud of the second reacting part is retained by 2# triphase separator, and waste water enters the 3rd reacting part.The main purpose of the 3rd reacting part is retaining and inrichment anaerobion.By the packing layer that volcanic filling material is piled up, can effectively catching mud, and the porosity of volcanics is higher, is conducive to biofilm and the enrichment of tiny mud.Be equivalent to adopt compulsive means to retain mud, thus the system that ensures has high sludge concentration, to overcome higher waterpower flow velocity to the impact of sludge loss, and reduce the sludge loading of same volume reactor, significantly improve processing power and processing efficiency.Waste water water outlet after the filtration of volcanics through the 3rd reacting part is comparatively clarified, and the burden brought follow-up aerobic treatment or other treatment process is less, is conducive to the stable and efficient of whole sewage treatment process.Simultaneously due to the enrichment of microorganism, reactor is increased for there being the tolerance level of every objectionable impurities, for originally having certain treatment effect with the waste water of anaerobic biological technical finesse.Increase the range of application of anaerobic biological technology.Enhance social effect and economic benefits.
Waste water-after three reacting part process, the effluent weir discharge at slave unit top, effluent weir connects a main drain, directly enters next processing unit.Main drain arranges the arm in little No. one an of footpath, crossing, and arm is back to anaerobic reactor front end dry point, realizes the external reflux of anaerobic reactor.Backflow arm is arranged and regulates motorized valve and magnetic flow meter.The data shown by under meter are regulated motorized valve, can control quantity of reflux and then control reflux ratio.Strengthen the control of anaerobic reactor influent concentration and the control of upflow velocity, thus be conducive to the operation of reactor to control in optimum regime.
Constructed at anaerobic reactor, before actual motion, first will be full of clear water or river in reactor, then inoculation accounts for the anaerobically digested sludge of reactor effective volume 60% or accounts for the anaerobism grain husk grain mud of reactor effective volume 40%.By outer circulation pump, reactor is run, heat to reactor simultaneously, make reactor remain on the operating temperature of 35-39 DEG C, run 72 hours continuously.This is that mud is activated, and possesses flow condition.
By sewage according to every day design discharge 30 ~ 50% be starting point, start to be pumped to anaerobic reactor, investigate the processing efficiency of anaerobic reactor every day, if processing efficiency continues to be stabilized in more than 80% in three days, in reactor, volatile acid is stabilized in below 1000mg/L, then can increase amount of inlet water, the amplitude of increase depends on the circumstances, but is generally no more than the amplification of 20%.By that analogy, until anaerobic reactor process is to the design maximum water yield, in maximum amount of water steady running after one month, prove that this system starts successfully.
In sum, be only preferred embodiment of the present invention, not be used for limiting scope of the invention process, all equalizations of doing according to shape, structure, feature and the spirit described in the claims in the present invention scope change and modify, and all should be included in right of the present invention.

Claims (6)

1. a high concentrated organic wastewater treatment unit, comprise tank body, it is characterized in that, described tank body top is provided with biogas and is separated bag, tank interior is separated out the first reacting part from down to up successively, second reacting part and the 3rd reacting part, tank wall is provided with effluent weir, between described first reacting part and the second reacting part, the first triphase separator and the second triphase separator is respectively equipped with between second reacting part and the 3rd reacting part, water distributor is provided with bottom first reacting part, 3rd reacting part top is provided with mud enricher, described biogas is separated bag bottom and is provided with solid-liquid return line, biogas is separated bag sidewall and is provided with the first biogas-lift pipe and the second biogas-lift pipe, effluent weir is provided with above tank wall, rising pipe is provided with bottom described effluent weir.
2. high concentrated organic wastewater treatment unit according to claim 1, is characterized in that, described solid-liquid return line is successively through the 3rd reacting part, the second reacting part, and extend in water distributor, solid-liquid return line bottom is provided with into water divider.
3. high concentrated organic wastewater treatment unit according to claim 1, is characterized in that, described first biogas-lift pipe through the 3rd reacting part and the second reacting part, contacts with the first triphase separator successively.
4. high concentrated organic wastewater treatment unit according to claim 1, is characterized in that, described second biogas-lift pipe, through mud enricher, contacts with the second triphase separator.
5. high concentrated organic wastewater treatment unit according to claim 1, is characterized in that, described rising pipe is also provided with backflow water pipe.
6. high concentrated organic wastewater treatment unit according to claim 5, is characterized in that, described backflow water pipe is provided with motor-driven control valve and magnetic flow meter.
CN201310349161.7A 2013-08-09 2013-08-09 Treating device for high-concentration organic waste water Pending CN104341041A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107473376A (en) * 2017-09-12 2017-12-15 知和环保科技有限公司 A kind of anaerobic reaction system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201031176Y (en) * 2007-04-03 2008-03-05 山东美泉环保科技有限公司 Circulation type grain sludge reactor
CN201258287Y (en) * 2008-07-24 2009-06-17 彭吉成 Combined sludge bed anaerobic reactor
DE102008017009A1 (en) * 2008-04-03 2009-10-08 Wolfgang Eggert Arrangement of a reactor for anaerobic treatment of liquids such as wastewater through anaerobic biological conversion of organic matters and/or impurities, has gas storage, discharging device, and wastewater- or recirculation pipelines
CN201325906Y (en) * 2008-11-20 2009-10-14 浙江大学 Anaerobic biological reactor for treating high concentration dyeing wastewater
CN203392982U (en) * 2013-08-09 2014-01-15 南通润泽环境工程技术有限公司 High-concentration organic wastewater treatment device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201031176Y (en) * 2007-04-03 2008-03-05 山东美泉环保科技有限公司 Circulation type grain sludge reactor
DE102008017009A1 (en) * 2008-04-03 2009-10-08 Wolfgang Eggert Arrangement of a reactor for anaerobic treatment of liquids such as wastewater through anaerobic biological conversion of organic matters and/or impurities, has gas storage, discharging device, and wastewater- or recirculation pipelines
CN201258287Y (en) * 2008-07-24 2009-06-17 彭吉成 Combined sludge bed anaerobic reactor
CN201325906Y (en) * 2008-11-20 2009-10-14 浙江大学 Anaerobic biological reactor for treating high concentration dyeing wastewater
CN203392982U (en) * 2013-08-09 2014-01-15 南通润泽环境工程技术有限公司 High-concentration organic wastewater treatment device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107473376A (en) * 2017-09-12 2017-12-15 知和环保科技有限公司 A kind of anaerobic reaction system
CN107473376B (en) * 2017-09-12 2019-02-15 知和环保科技有限公司 A kind of anaerobic reaction system

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Application publication date: 20150211