CN103373761B - Method for treating industrial circulating water - Google Patents
Method for treating industrial circulating water Download PDFInfo
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- CN103373761B CN103373761B CN201210130656.6A CN201210130656A CN103373761B CN 103373761 B CN103373761 B CN 103373761B CN 201210130656 A CN201210130656 A CN 201210130656A CN 103373761 B CN103373761 B CN 103373761B
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Abstract
The invention relates to a method for biologically purifying industrial circulating water. The method is characterized in that a biodegradation reactor is arranged in a circulating water system; nitrobacteria and denitrifiers are taken as inocula in the biodegradation reactor; at least part of the circulating water enters the biodegradation reactor to be biologically treated; and the water from the biodegradation reactor enters the circulating water system. Compared with the prior art, the method has the advantages that the biological treatment method is adopted to treat the nutrient sources needed by microorganisms before the circulating water enters the device, so that the microorganisms brought in by the circulating water in the circulating process are difficult to survive, and then growth and reproduction of the microorganisms in the circulating water system are controlled.
Description
Technical field
The present invention relates to a kind for the treatment of process of industrial circulating water, specifically, the method relate to microorganism growth in a kind of controlled circulation water system, preventing biological clay from producing.
Background technology
Industrial circulating water system uses water rich and influential family, recirculated water is mainly used as heat-eliminating medium, be responsible for thermal material heat exchange, this part water temperature when entering device is lower, when looping back from device, temperature is higher, needs cooling tower (having filler in general tower) the cooling process through circulation water factory when therefore utilizing once again.Cooling tower adopts unenclosed construction mostly, and the bottom of tower passes into air, and water flows from top to bottom, and in cooling tower, water and air contacts and water temperature can be reduced, and also koniology and a large amount of microorganism is brought in circulating water system simultaneously.In circulating water system, microorganism amount reproduction produces biological clay deposition on heat exchangers, microorganism produces accumulated gases in pipeline in vital movement process, the heat exchange efficiency of interchanger is significantly reduced, industrial requirement can not be met, cause heavy corrosion and the perforation of equipment, also there is potential safety hazard in equipment corrosion meeting reduction of service life simultaneously; Interchanger is once perforation causes material from leakage, and the organism of leakage becomes again the good nutrition source of microorganism, promotes microbial growth breeding further, forms vicious cycle.In recirculated water, microbial growth and breeding are that can circulating water system one of the steady in a long-term influence factor run.Existing recirculated water circulation generally arranges other filter tank, filtration treatment is carried out to component loops water, utilize the filler filled in strainer, be mainly used to retain and remove suspended substance, silt particle, colloid and graininess impurity in water, make opacity at below 10mg/L, arrange maintenance circulating water quality outward by part recirculated water simultaneously and stablize.
Prevent the technology of microorganism growth from being all add Cucumber mostly in current circulating water treatment process, play the effect of killing microorganism or biological clay being peeled off and cleans.CN1125697A discloses the application of a kind of biological cleanser in circulating water system and using method thereof, relates generally to material from leakage in a kind of circulating water system, biological clay, the new removal of bacterium algae and control method; Relate to a kind of biotechnological formulation composite possess inhibition, scale inhibition decontamination, antibacterial multi-functional compound novel water quality stabilizer.CN99110817.5 discloses a kind of method for disinfection for circulating water system, containing in the recirculated water of sterilant, adds inorganic alkaline compound, makes pH value be 9 ~ 12.CN00121551.5 discloses a kind of method of cycle for the treatment of water system biological clay, and the method comprises and adds alkaline matter, makes pH in Circulating Water bring up to 10 ~ 14, carries out alkali molten, add biocide and kill undissolved biological clay biological clay.CN200510025392.8 discloses a kind of method controlling microorganism growth in circulating water system, first in circulating water system, add the mixture of dodecyl dimethyl benzyl ammonium chloride and isothiazolinone, then in circulating water system, add PAPE.Above-mentionedly add the methods such as sterilant, tensio-active agent and biological enzyme formulation, can microbial growth in controlled circulation water system at the dosing initial stage, but microorganism itself has certain tolerance and resistance, along with the prolongation of time, the resistance of microorganism strengthens, then added pharmaceutical quantities can increase gradually, and expensive medicament certainly will increase running cost, and medicament was once just become new pollutent after losing efficacy.The biological clay simultaneously killed discharges COD again, the nutritive substance needed for growth is provided to the microorganism of recirculated water again with coming in working cycle, so also have biological regrowth, having problems of microbial growth and breeding and biological clay fundamentally can not be solved.
Microorganism why can in circulating water system growth and breeding, topmost reason there is the necessary nutritive substance of microorganism growth in recirculated water, provides food source to microbial growth.If there is no the utilizable nutraceutical matrix of these microorganisms, then microbes natural death.Now built establishes circulating water treatment device mostly by the part blowdown of other filter tank, this the measure of bypass process is done to small part water in circulating water system, can only to alleviate or part solves the biological clay problem that suspended substance brings in recirculated water, can not the effective utilizable material of degrading microorganism.US6086772(EP0893412) a kind of method preventing biological clay generation in recirculating cooling water system is disclosed, the method installs an ozonizer in circulating water system, the ozone produced by ozonizer prevents the generation of biological clay, still can not play Degradation to the pollutent in recirculated water.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind for the treatment of process of recirculated water is provided.The method can allow recirculated water get back to device district after biochemical mass degradation in recirculated water again, microbial growth breeding is controlled by restriction concentration of substrate, and then reducing the generation of biological clay, the real circulating water system that solves is because of biological self reproducing, Stickydeposit and cause the problems such as the decline of interchanger heat exchange efficiency, equipment corrosion, water cooling tower water distributing pore and barrier blocking.
The treatment process of industrial circulating water of the present invention comprises following content: in circulating water system, arrange bio-degradation reactions device, using nitrobacteria and denitrification denitrogenation microbial inoculum as inoculum in bio-degradation reactions device.At least part of recirculated water enters bio-degradation reactions device and carries out biochemical treatment, and the water outlet of bio-degradation reactions device enters circulating water system.
In the inventive method, using sludge sewage as microbe carrier, first add denitrification denitrogenation microbial inoculum, then add nitrobacteria.Wherein denitrification denitrogenation microbial inoculum needs first to be blended in active sludge to add together with active sludge.The dosage that active sludge is 500 ~ 1500mg/L according to MLSS adds, and denitrification denitrogenation microbial inoculum adds according to the volume ratio 0.01% ~ 0.1% of mud; The dosage that nitrobacteria is 50 ~ 500mg/L according to MLSS adds.
In the inventive method, nitrobacteria is added again after forming microbial film in bio-degradation reactions device, be specially, add denitrification denitrogenation microbial inoculum after 2 ~ 10 days, after can't detect nitrate nitrogen in system and form microbial film in visual inspection bio-degradation reactions device, add nitrobacteria again.
In the inventive method, sludge sewage can from Waste water treatment factory or Catalyst sewage treatment plant or certain municipal wastewater treatment plant.
In the inventive method, the nitrobacteria added comprises Nitromonas and Nitrosomas, is preferably nitrosation dominant microflora, as Nitrosomas accounts for more than 60% of nitrifier total quantity.Nitrobacteria can adopt various existing scheme to cultivate, and also can adopt commercially available microbial inoculum, as the nitrosation dominant microflora that can obtain according to CN201010221166.8.
CN201010536004.3 is shown in denitrification denitrogenation microbial inoculum agent described in the inventive method, primarily of
arthrobacter creatinolyticusfDN-1 and
flavobacterium mizutaiifDN-2 forms; FDN-1 and FDN-2 is preserved on March 11st, 2010 that " China Committee for Culture Collection of Microorganisms's common micro-organisms " center ", depositary institution address is No. 3, Yard 1, BeiChen xi Road, Chaoyang District, Beijing City (postcode 100101).Preservation registration number is respectively CGMCC NO.3657 and CGMCC NO.3659, and this denitrification denitrogenation microbial inoculum microbial inoculum can carry out denitrification denitrogenation using nitrite as electron acceptor(EA).The thalline volume ratio of Arthrobacter FDN-1 and Shui Shi Flavobacterium FDN-2 is the thalline volume that 0.2:1 ~ 1:5(thalline volume refers to that after cultivation, centrifugation obtained after 5 minutes under 10,000 turns of conditions, and the thalline related in the application is stopped the long-pending same procedure that adopts and determined).Containing additives such as nutritive mediums in denitrification microbial inoculum, the volume of thalline accounts for 10% ~ 60% of denitrification microbial inoculum volume, is preferably 20% ~ 50%.
In the inventive method, bio-degradation reactions device can be the various reactors that efficiently can process low concentration wastewater in sewage treatment area, as membrane bioreactor, BAF etc.Preferred BAF (BAF), can reach two objects simultaneously: 1) play and filter the object of suspended substance, 2) reduce the concentration of biodegradable material in the recycle system, reduce medicament usage quantity.
In the inventive method, the operational condition of bio-degradation reactions device is generally: temperature: 18 ~ 38 DEG C, pH:7.5 ~ 8.5, dissolved oxygen (DO): 0.5 ~ 3.0mg/L.In the inventive method, after biochemical degradation reactor for treatment, water outlet ammonia nitrogen is generally lower than 5mg/L, preferably lower than 2 mg/L, COD(chromium method, lower same) general lower than 10mg/L, preferably lower than 5 mg/L.
In the inventive method, the quantity of circulating water entering biochemical degradation reactor can be 1% ~ 25% of recirculated water gross weight, is preferably 2% ~ 10%.The recirculated water entering biochemical degradation reactor can take from cooling tower outlet or cooling tower entrance, also can be cooling tower outlet and the mixing water of cooling tower inlet water, use the advantage of mixing water to be the inflow temperature being suitable for adjusting bio-degradation reactions device.The draining of biochemical degradation reactor outlet directly can enter circulating water system, also can enter circulating water system after filtering further.
In the inventive method, BAF is the structure of this area routine, is generally made up of pond body, filtrate, supporting layer, distribute water and air system, back-purge system, outlet system and robot control system(RCS) etc.; Pond body can be the reactor of any specification used in prior art, can use filler in reactor; Filler used can be haydite, coke, quartz sand, volcanics etc.The scale of aeration tank can be determined according to Pollutant levels in quantity of circulating water and recirculated water.In the present invention, corresponding Controlling System can be set as required, power system, Monitoring systems etc.
Compared with adopting additive treating recirculated water with prior art, the present invention adopts bioremediation, nutrition source needed for microorganism is entered device pre-treatment at recirculated water fall, the microorganism that recirculated water is brought in working cycle is difficult to existence, and then controls the growth and breeding of microorganism in circulating water system.The inventive method is taked first to add denitrifying bacterium, then adds the mode of nitrobacteria, is conducive to the rapid biofilm of reactor, improves biomembranous work-ing life.
The inventive method is from the nutritive substance needed for microorganism growth, destroys the inner microbial growth environment of circulating water system, fundamentally solves microbial growth problem.Because microorganism lacks the necessary nutritive substance of growth, so in whole recirculated water working cycle, no longer include biological self reproducing, then scatterer no longer includes biological clay deposition, then greatly can improve radiating efficiency, reduce corrosion and the perforation of equipment simultaneously, the cycles of concentration of circulating water system can be improved in addition, reduce dosing.
The inventive method is found by research, by the biochemical treatment of recirculated water part, the index such as ammonia nitrogen and COD effectively in controlled circulation water system can be in lower equilibrium state in long-term operation process, restriction micro-organisms grows, ensure that recirculated water life-time service never degenerates, reduce Circulating water effluent amount simultaneously, reduce the magnitude of recruitment of fresh water, really accomplish water-saving and emission-reducing.Show after deliberation, first denitrification denitrogenation microbial inoculum is added, then nitrobacteria is added, be conducive in poor nutrition system for handling, make the stable of microflora, be conducive to the biofilm speed improving filler in poor nutrition system for handling, this is very favorable to cycle for the treatment of water, because the nutritive substance in recirculated water is less.
Accompanying drawing explanation
Fig. 1 is present invention process FB(flow block).
Embodiment
The solution of the present invention and effect is further illustrated below by embodiment.
BAF is the particulate filler loaded is carrier, be main treatment media with the microbial film of granulated filler and apposition growth thereof, give full play to biological metabolism effect, biological flocculation, physical filtering effect, the physical adsorption of film and filler and crown_interception, and along the multistage predation of biology of water (flow) direction food chain in reactor, realize the efficient removal of pollutent.The present invention adopts BAF to replace other filter tank, the function in other filter tank can be completed on the one hand, pollutent in recirculated water can be degraded on the other hand, reduce or cut off the nutrition source of the inner microorganism of circulating water system, control the generation of biological clay, reduce the blowdown flow rate of recirculated water, improve the cycles of concentration of recirculated water.
In the application in embodiment, prepare embodiment 1 method according to CN201010221166.8 and cultivate the nitrosation dominant microflora obtained, as the nitrobacteria in the application's scheme.
The preparation of CN201010536004.3 embodiment 1 method pressed by the denitrification denitrogenation microbial inoculum that embodiment uses, wherein Arthrobacter FDN-1 and Shui Shi Flavobacterium FDN-2 seed liquor carry out amplification culture according to 1:1 ratio, carry out after amplification culture collecting concentrating and obtain denitrification thalline (thalline that under the concentrated employing 10,000 turns of conditions of collection, centrifugation obtained after 5 minutes), add nutritive medium and preserving agent, obtain denitrification microbial inoculum, in denitrification microbial inoculum, the volume of thalline accounts for 30%.
Embodiment 1
Certain circulation water factory quantity of circulating water is 2.7 ten thousand tons/hour, and recirculated water influent COD (chromium method, lower same) is 39.2 ~ 70mg/L, ammonia nitrogen is 2.2 ~ 6.9mg/L.Wherein enter BAF (BAF) with the quantity of circulating water of 900 tons/hour, the operational condition of BAF is: temperature 28 DEG C, pH7.5, DO are 1.5mg/L.The dosage being 1000mg/L according to MLSS after being mixed with active sludge by denitrification denitrogenation microbial inoculum is added in BAF, within 20 days, there is biofilm formation as seen afterwards, the dosage being now 100mg/L according to MLSS adds nitrobacteria, after treatment in water outlet ammonia nitrogen lower than 2mg/L, COD lower than 5mg/L, the cycles of concentration of recirculated water brings up to 5.5 by original 4.5, life-time service Posterior circle water water quality is substantially constant, does not have the generation of biological clay.
Embodiment 2
In certain large-scale petrochemical refinery recirculating cooling water system domestic, recirculated water total amount 2.2 ten thousand tons/hour, controlled circulation cycles of concentration is 2.5, and amount of makeup water is 600 tons/hour, and recirculated water COD is 60.2 ~ 79mg/L, ammonia nitrogen is 7.2 ~ 10.9mg/L.Adopt the raw filter tank of aeration to carry out partially disposed to the recirculated cooling water after cooling tower, the cycle for the treatment of water yield is 1100 tons/hour.First be mixed in active sludge according to sludge volume than 0.05% by denitrification microbial inoculum, be then added in BAF by mud bacterium mixture, when there being microbial film to generate in viewing system, the dosage that to start according to MLSS be 80mg/L adds nitrobacteria.BAF operational condition is: temperature: 32 DEG C, pH:7.8, DO:2.0mg/L.After treatment in water outlet ammonia nitrogen and COD all the time lower than 5mg/L, meet the water quality requirement of circulating water system completely, circulating water system amount reduces 30%(because decreasing conventional other filter tank blowdown simultaneously, reduce amount of makeup water), cycles of concentration brings up to 4.2, when not using other circulating water treatment reagent, circulating water quality can keep remaining unchanged for a long period of time, and does not produce biological clay in circulating water system.
Claims (16)
1. a treatment process for industrial circulating water, is characterized in that: in circulating water system, arrange bio-degradation reactions device, using nitrobacteria and denitrification denitrogenation microbial inoculum as inoculum in bio-degradation reactions device; At least part of recirculated water enters bio-degradation reactions device and carries out biochemical treatment, and the water outlet of bio-degradation reactions device enters circulating water system; Denitrification denitrogenation microbial inoculum primarily of
arthrobacter creatinolyticusfDN-1 and
flavobacterium mizutaiifDN-2 forms;
arthrobacter creatinolyticusfDN-1 and
flavobacterium mizutaiifDN-2 preservation registration number is respectively CGMCC NO.3657 and CGMCC NO.3659.
2. method according to claim 1, is characterized in that: using sludge sewage as microbe carrier, first adds denitrification denitrogenation microbial inoculum, then adds nitrobacteria; Wherein denitrification denitrogenation microbial inoculum needs first to be blended in active sludge to add together with active sludge; The dosage that active sludge is 500 ~ 1500mg/L according to MLSS adds, and denitrification denitrogenation microbial inoculum adds according to the volume ratio 0.01% ~ 0.1% of mud; The dosage that nitrobacteria is 50 ~ 500mg/L according to MLSS adds.
3. method according to claim 2, is characterized in that: sludge sewage is from Waste water treatment factory or Catalyst sewage treatment plant or certain municipal wastewater treatment plant.
4. method according to claim 1, is characterized in that: the nitrobacteria added comprises Nitromonas and Nitrosomas, and wherein Nitrosomas accounts for more than 60% of nitrifier total quantity.
5. method according to claim 1, is characterized in that: bio-degradation reactions device is membrane bioreactor or BAF.
6. method according to claim 1 or 5, is characterized in that: the operational condition of bio-degradation reactions device is: temperature: 18 ~ 38 DEG C, pH:7.5 ~ 8.5, DO:0.5 ~ 3.0mg/L.
7. method according to claim 1, is characterized in that: after biochemical degradation reactor for treatment water outlet ammonia nitrogen lower than 5mg/L, COD lower than 10mg/L.
8. method according to claim 1, is characterized in that: after biochemical degradation reactor for treatment water outlet ammonia nitrogen lower than 2 mg/L, COD lower than 5 mg/L.
9. method according to claim 1, is characterized in that: the quantity of circulating water entering biochemical degradation reactor is 1% ~ 20% of recirculated water gross weight.
10. method according to claim 9, is characterized in that: the quantity of circulating water entering biochemical degradation reactor is 2% ~ 10% of recirculated water gross weight.
11. methods according to claim 1 or 9, is characterized in that: the recirculated water entering biochemical degradation reactor takes from cooling tower outlet or cooling tower entrance, or cooling tower goes out the mixing water of saliva and cooling tower inlet water.
12. methods according to claim 1, is characterized in that: the draining of biochemical degradation reactor outlet directly enters circulating water system, or enter circulating water system after filtering further.
13. methods according to claim 5, is characterized in that: BAF is the structure of this area routine, are made up of pond body, filtrate, supporting layer, distribute water and air system, back-purge system, outlet system and robot control system(RCS).
14. methods according to claim 1, is characterized in that:
arthrobacter creatinolyticusfDN-1 and
flavobacterium mizutaiithe thalline volume ratio of FDN-2 is 0.2:1 ~ 1:5.
15. methods according to claim 1, is characterized in that: containing nutritive medium in denitrification microbial inoculum, the volume of thalline accounts for 10% ~ 60% of denitrification microbial inoculum volume.
16. methods according to claim 1, is characterized in that: add denitrification denitrogenation microbial inoculum after 2 ~ 10 days, after can't detect nitrate nitrogen in system and form microbial film in visual inspection bio-degradation reactions device, add nitrobacteria again.
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| CN105198096B (en) * | 2015-11-10 | 2018-07-24 | 重庆融极环保工程有限公司 | The device of organic carbon can be assimilated in a kind of reduction recirculated water |
| CN109775869B (en) * | 2019-03-29 | 2021-12-03 | 重庆融极环保工程有限公司 | Biological filler fixing system for industrial circulating water treatment |
| CN110156275A (en) * | 2019-06-13 | 2019-08-23 | 西安西热水务环保有限公司 | A kind of environmentally friendly recirculated water by-pass flow biological treatment system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098279A (en) * | 2005-10-04 | 2007-04-19 | Mitsubishi Heavy Ind Ltd | Apparatus and method for treating waste water by using microbe |
| CN101234815A (en) * | 2008-02-05 | 2008-08-06 | 中国科学院沈阳应用生态研究所 | Membrane bioreactor capable of realizing synchronous nitration denitrification denitrogenation function |
| CN101928063A (en) * | 2009-06-18 | 2010-12-29 | 中国石油化工股份有限公司 | Recirculated cooling water system and purification method for recirculated cooling water |
| CN102241459A (en) * | 2011-06-01 | 2011-11-16 | 北京大学 | Method for reinforcing adsorption-biodegradation (AB) denitrification technology by use of heterotrophic nitrification-aerobic denitrification bacteria |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098279A (en) * | 2005-10-04 | 2007-04-19 | Mitsubishi Heavy Ind Ltd | Apparatus and method for treating waste water by using microbe |
| CN101234815A (en) * | 2008-02-05 | 2008-08-06 | 中国科学院沈阳应用生态研究所 | Membrane bioreactor capable of realizing synchronous nitration denitrification denitrogenation function |
| CN101928063A (en) * | 2009-06-18 | 2010-12-29 | 中国石油化工股份有限公司 | Recirculated cooling water system and purification method for recirculated cooling water |
| CN102241459A (en) * | 2011-06-01 | 2011-11-16 | 北京大学 | Method for reinforcing adsorption-biodegradation (AB) denitrification technology by use of heterotrophic nitrification-aerobic denitrification bacteria |
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