CN104609543B - A kind of decanedioic acid waste water aerobic biochemical processing method - Google Patents
A kind of decanedioic acid waste water aerobic biochemical processing method Download PDFInfo
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- CN104609543B CN104609543B CN201310540250.XA CN201310540250A CN104609543B CN 104609543 B CN104609543 B CN 104609543B CN 201310540250 A CN201310540250 A CN 201310540250A CN 104609543 B CN104609543 B CN 104609543B
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- Y—GENERAL 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
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Abstract
The present invention is a kind of decanedioic acid waste water aerobic biochemical processing method, the method is directly turned out salt tolerant activated sludge taking sodium sulphate content as 5～15% decanedioic acid waste water, then in aerobic biochemical device, waste water is carried out to Aerobic Process for Treatment with this activated sludge, can make do not diluting under the condition of not desalination except decanedioic acid waste water after phenol pretreatment bio-chemical effluent COD < 500mg/L. The decanedioic acid waste water of the inventive method does not dilute not desalination and carries out biochemical treatment, and cost for wastewater treatment reduces. Directly utilize decanedioic acid self cultivate salt tolerant activated sludge and waste water is processed, without inoculating Halophiles or Halophiles being separated and cultivated, easily implement. Be applicable to decanedioic acid manufacturing enterprise and carry out on the spot the newly-built of sewage disposal system or transformation. Utilize the inventive method, can directly start the high salt biochemical system of decanedioic acid waste water, and shorten start-up time.
Description
Technical field
The present invention relates to a kind of processing method of high sodium sulphate industrial wastewater, it is useless that specifically one makes decanedioic acid productionWater is not diluting the method for direct aerobic treatment under not desalination condition.
Background technology
Decanedioic acid is a kind of important valency industrial chemicals that has, and is widely used in production engineering plastics, fire-resistant lubricants, epoxyResin curing agent, sebacic anhydride, synthetic lubricant fluid, alcohol phenol resin, mylar, Glass Fiber Reinforcement, cosmetics etc. ChinaBe the country of decanedioic acid output maximum, mainly adopt at present and carry out cracking process production decanedioic acid, product per ton taking castor oil as raw materialProduct need consume 150～250kg phenol, produce 25～40 tons of waste water, wherein phenol content be 2000～5000mg/L, pH be 2～3, sodium sulphate content is 6～10%, COD content is 10000～20000mg/L, belongs to high salt, high phenol, high COD industrial wastewater, processesDifficulty is very large. According to estimates, produce the enterprise of 40,000 tons of decanedioic acid per year for one, waste water year generation reach more than 1,500,000 tons, if do not carry outImprove and process, can cause severe contamination to environment.
The method of at present industrial main employing extraction or absorption is processed decanedioic acid waste water, although can remove uselessMost of phenols be back to production in water, but phenol and COD etc. in water still exceedes emission limit requirement. For example: utilize castorSesame oil acid extracts decanedioic acid waste water, and extraction progression is more than 8 grades, though need not carry out back extraction, water average COD > after extraction4000mg/L, phenol > 50mg/L; Utilize secondary octanol as extractant, water COD > 2000mg/L after extraction, phenol concentration is greater than 50mg/L; Utilize QH-1 type complexometric extraction can make Phenol for Waste Water content be down to below 10mg/L, but raffinate COD > 1000mg/L. CauseThis, make decanedioic acid wastewater treatment up to standard, must further process extracting rear water. At present main methods be advanced oxidation andBiochemical treatment; Comparatively speaking, biochemical treatment has more economic advantages.
In decanedioic acid waste water, sodium sulphate content is up to 5～15%, and so high salinity has murder by poisoning to common micro-organisms cellAnd inhibitory action, therefore conventional activated sludge process tradition biochemical process is difficult to waste water is not being diluted or right desalination in the situation thatThe direct biochemical treatment of decanedioic acid waste water. Just because of this, the main treatment process of prior art decanedioic acid factory effluent is " to remove phenol pre-Processing+evaporative desalination+biochemistry ". Though this technique can make wastewater treatment arrive " integrated wastewater discharge standard " (GB primary standard A),But exist operating cost high, a difficult problem for fluctuation of service. Therefore, remove the pretreated decanedioic acid waste water of phenol for warp, if energyDirectly carry out biochemical treatment without evaporative desalination, will greatly reduce decanedioic acid waste water treatment cost, improve current decanedioic acid and produceThe situation that industry pollution control cost is high.
Summary of the invention
The object of the invention is the deficiency for existing decanedioic acid wastewater processing technology, propose one and can make decanedioic acid uselessWater does not dilute not desalination directly carries out the method for aerobic treatment.
Principle of the present invention is: contains sodium sulfate 5～15% in decanedioic acid waste water, mainly containing organic pollutants is phenol, aliphatic acidAnd small molecular organic acid, wastewater biochemical is good generally. But phenol is dense in the fresh wastewater that decanedioic acid workshop is dischargedDegree reaches 2000～5000mg/L, and water temperature exceedes 50 DEG C, is wherein difficult to have microbial survival. But, pretreated through removing phenolDecanedioic acid waste water, wherein phenol concentration is generally down to 50～150mg/L, and bio-toxicity reduces greatly. If this waste water is oftenTemperature is lower places the long period, carries out contacting of long period, the micro-life in surrounding soil, dust, empty G&W with external environmentThing can contact with each other, and the microorganism in these environment is introduced in decanedioic acid waste water, and wherein part microorganism is at waste waterLong-term ageing process in can adapt to gradually decanedioic acid waste water quality environment, and and finally can do with organic matter in waste waterFor carbon source and the energy are grown. In addition on the one hand, the high sodium sulfate wastewater that decanedioic acid production process produces, in open productionUnder condition, can interact with the environment such as soil, air and the rainwater of on-site, therefore, there is the last of the ten Heavenly stems of certain production timeIn diacid enterprise surrounding environment, exist by natural selection effect and obtain the adaptive salt-durable microbe of decanedioic acid waste water quality.
Technical problem to be solved by this invention is to realize by following technical scheme. The present invention is a kind of last of the ten Heavenly stems twoAcid waste water aerobic biochemical processing method, is characterized in: the method is by aerobic process pair in the situation that not diluting not desalinationDecanedioic acid waste water carries out biochemical treatment at normal temperatures, makes water outlet COD < 500mg/L, and its concrete steps comprise:
(1) cultivation of salt tolerant activated sludge: the aqueous sodium persulfate solution that is 5～15% by concentration by decanedioic acid wastewater dilution extremelyCOD < 500mg/L, volatile phenol < 50mg/L, shaken cultivation or aeration are cultivated; After the degradation rate > 80% of COD or volatile phenol, quietPut sedimentation, discharge the supernatant of 1/6～1/2 volume, supplement decanedioic acid waste water and continue to cultivate, repeat until after standing sedimentationThere is flco and MLSS > 300mg/L; Maintain F/M≤0.80, flco concentration is cultured to MLSS > 2000mg/L, obtain salt tolerantActivated sludge; In whole process, maintain pH and be 3.0～9.0, dissolved oxygen DO≤4.0mg/L;
(2) aerobic treatment of decanedioic acid waste water: inoculate salt tolerant activated sludge that above-mentioned cultivation obtains to aerobic biochemicalTreating apparatus, makes MLSS >=500mg/L in biochemical device, enters decanedioic acid waste water and processes under aeration condition, progressively improvesDecanedioic acid influent waste water load is tamed, and operational factor control is: dissolved oxygen 2.0≤DO≤4.0mg/L, 6.0≤pH≤9.0、0.1≤F/M≤0.80。
In a kind of decanedioic acid waste water aerobic biochemical processing method of the present invention, preferred technical scheme or technology spyLevy and be:
1. decanedioic acid waste water first carries out pretreatment except phenol before entering biochemical treatment, makes Determination of Volatile Phenol in Refinery Wastewater < 200mg/L, COD＜5000mg/L。
2. described in, removing phenol pretreating process is castor oil acid extraction, secondary octanol extraction, complexometric extraction or macroporous resin adsorption.
3. the decanedioic acid waste water described in step (1) is for to deposit decanedioic acid waste water at normal temperatures and to carry out old at least 1 monthThe decanedioic acid waste water of changing. The decanedioic acid waste water of ageing of the present invention, longer digestion time can carry out salt-durable microbeThe natural selection effect of longer time. In ageing process, by extra-nutrition element or add near soil decanedioic acid factory,The environmental samples such as sump sewage, can artificially strengthen the selection to salt-durable microbe and enrichment in waste water ageing process.
4. in step (1), add ordinary activated sludge, flocculant, flyash, active carbon or other microbial adhesion thing, withImprove the formation speed of flco.
5. in step (1) decanedioic acid waste water ageing process, add saline-alkali soil, seawater, bittern, salt mine or other hypersaline environmentSample, to improve decanedioic acid waste water ageing effect.
Hypersaline environment described in the inventive method, comprises following three classes:
(1) natural hypersaline environment: ocean, the Dead Sea, salt lake, salt pan, salt-soda soil, salt mine, subsurface brine etc. These high salt ringsBorder formation time is longer, and salt-durable microbe kind height is abundant, and the salt resistance ability of microorganism is strong, salt-durable microbe population and of living inThe actual salt content of hypersaline environment and other environmental characteristic adapt.
(2) semi-natural hypersaline environment: the high-salt wastewater of salt field, salt-soda soil, curing food, long-term storage, high-salt wastewater dirtThe soil that dyes, river, lake etc. The time that these hypersaline environments form is different in size, and salt environment feature can change.
(3) soil: agricultural land soil, grassland soil, forest soil etc. Soil environment entirety salt content is not high, but due to soilThe anisotropism of earth environment, and the long-term existence of dry the wet effects such as variation, mineralising, weathering, leaching, make to deposit in soil environmentAt a large amount of local hypersaline environments, this slightly territory hypersaline environment be enough to support the existence of various salt-durable microbes.
So, hypersaline environment sample source of the present invention but be not limited to: ocean, the Dead Sea, brackish water lake, salt water lake, saltLake, salt pan, salt-soda soil, salt mine, salt well, salt field, curing food, high-salt wastewater, soil;
6. after supplementing N, P on demand, carry out the cultivation of salt tolerant activated sludge and the aerobic treatment of decanedioic acid waste water.
7. in step (2), the pH of decanedioic acid influent waste water is preferably 5.0-6.5.
In the invention process process, step (1) can add PAM, PAC, poly-ferric chloride or other flocculant, can promoteMicrobial cell flocculation forms activated sludge flco.
Owing to containing small molecular organic acid in waste water, after removing phenol pretreatment, its relative amount is higher, useless after biochemistryThe pH of water can increase, and therefore maintains into 5.0≤pH≤6.5, just can ensure better system in waste water aerobic biochemical treatment processPH maintains 6～9.
Compared with prior art, the invention has the beneficial effects as follows:
(1) decanedioic acid waste water does not dilute not desalination and carries out biochemical treatment, and cost for wastewater treatment reduces.
(2) directly utilize decanedioic acid self cultivate salt tolerant activated sludge and waste water is processed, without inoculation HalophilesOr Halophiles is separated and cultivated, easily implement.
(3) be applicable to decanedioic acid manufacturing enterprise and carry out on the spot the newly-built of sewage disposal system or transformation.
(4) utilize the inventive method, can directly start the high salt biochemical system of decanedioic acid waste water, can shorten startupTime.
(5) utilize the inventive method to carry out aerobic treatment to decanedioic acid waste water, can be at influent COD < 5000mg/Under L, volatile phenol < 200mg/L condition, water outlet COD < 500mg/L, volatile phenol < 0.5mg/L.
Detailed description of the invention
Below in conjunction with specific embodiment, content of the present invention is described, so that those skilled in the art enter the present inventionOne step is understood.
Embodiment 1, a kind of decanedioic acid waste water aerobic biochemical processing method, the method is in the situation that not diluting not desalinationBy aerobic process, decanedioic acid waste water is carried out to biochemical treatment at normal temperatures, make water outlet COD < 500mg/L, its concrete steps bagDraw together:
(1) cultivation of salt tolerant activated sludge: the aqueous sodium persulfate solution that is 5～15% by concentration by decanedioic acid wastewater dilution extremelyCOD < 500mg/L, volatile phenol < 50mg/L, shaken cultivation or aeration are cultivated; After the degradation rate > 80% of COD or volatile phenol, quietPut sedimentation, discharge the supernatant of 1/6～1/2 volume, supplement decanedioic acid waste water and continue to cultivate, repeat until after standing sedimentationThere is flco and MLSS > 300mg/L; Maintain F/M≤0.80, flco concentration is cultured to MLSS > 2000mg/L, obtain salt tolerantActivated sludge; In whole process, maintain pH and be 3.0～9.0, dissolved oxygen DO≤4.0mg/L;
(2) aerobic treatment of decanedioic acid waste water: inoculate salt tolerant activated sludge that above-mentioned cultivation obtains to aerobic biochemicalTreating apparatus, makes MLSS >=500mg/L in biochemical device, enters decanedioic acid waste water and processes under aeration condition, progressively improvesDecanedioic acid influent waste water load is tamed, and operational factor control is: dissolved oxygen 2.0≤DO≤4.0mg/L, 6.0≤pH≤9.0、0.1≤F/M≤0.80。
Embodiment 2, in a kind of decanedioic acid waste water aerobic biochemical processing method described in embodiment 1: decanedioic acid waste water enters lifeBefore changing processing, first carry out pretreatment except phenol, make Determination of Volatile Phenol in Refinery Wastewater < 200mg/L, COD < 5000mg/L.
Embodiment 3, in a kind of decanedioic acid waste water aerobic biochemical processing method described in embodiment 2: described except phenol pretreatmentTechnique is castor oil acid extraction, secondary octanol extraction, complexometric extraction or macroporous resin adsorption.
Embodiment 4, in a kind of decanedioic acid waste water aerobic biochemical processing method of embodiment 1-3 described in any one: step(1) the decanedioic acid waste water described in is that decanedioic acid waste water is deposited to the decanedioic acid waste water that carries out ageing at least 1 month at normal temperatures.
Embodiment 5, in a kind of decanedioic acid waste water aerobic biochemical processing method of embodiment 1-4 described in any one: step(1) in, add ordinary activated sludge, flocculant, flyash, active carbon or other microbial adhesion thing, to improve the formation of flcoSpeed.
Embodiment 6, in a kind of decanedioic acid waste water aerobic biochemical processing method of embodiment 1-5 described in any one: step(1) in decanedioic acid waste water ageing process, add saline-alkali soil, seawater, bittern, salt mine or other hypersaline environment sample, to improve the last of the ten Heavenly stems twoAcid waste water ageing effect.
Embodiment 7, in a kind of decanedioic acid waste water aerobic biochemical processing method of embodiment 1-6 described in any one: as requiredAfter supplementing N, P, carry out the cultivation of salt tolerant activated sludge and the aerobic treatment of decanedioic acid waste water.
Embodiment 8, in a kind of decanedioic acid waste water aerobic biochemical processing method of embodiment 1-7 described in any one: step(2), in, the pH of decanedioic acid influent waste water is 5.0-6.5.
Embodiment 9, a kind of decanedioic acid waste water aerobic biochemical processing method experiment:
Certain enterprise's decanedioic acid factory effluent, COD is 12000～15000mg/L, phenol content is 3000～4000mg/L, adoptsWaste water is removed to phenol pretreatment with castor oil acid, reclaim the phenol in waste water simultaneously. Through except waste water COD after phenol pretreatment being3500～4200mg/L, phenol content is 50～150mg/L.
Get above-mentioned removing under the pretreated decanedioic acid waste water of phenol 50L room temperature and carry out ageing, digestion time 4 months, oldDuring change, 15～30 DEG C of temperature average out to, do not do other processing.
It is 6～12% the aqueous solution that the decanedioic acid waste water 80～120mL that gets above-mentioned ageing joins 900mL sodium sulfate concentrationIn, this aqueous solution is prepared with running water, supplement N(urea), P(potassium dihydrogen phosphate), in 20～30 DEG C of constant-temperature tables, 180rpm entersRow shaken cultivation 120h; And then add the decanedioic acid waste water of the above-mentioned ageing of 100mL to cultivate in constant-temperature table; IncubationThe middle variation with microbial in microscopic examination nutrient solution detects the degraded situation of COD or phenol simultaneously, when COD or phenolClearance is greater than 80%, supplements new ageing decanedioic acid waste water and cultivates; Along with the increase of biomass in nutrient solution, can be graduallyIncrease the addition of decanedioic acid waste water. Through 5～10 cycles, biomass concentration is cultured to 400～600mg/L.
Above-mentioned mixed liquor is proceeded in the device of 1000mL, the decanedioic acid waste water of advanced ageing carries out aeration cultivation, detectsClearance to COD or phenol is greater than 80%, starts to train as water inlet except the pretreated fresh decanedioic acid waste water of phenolSupport. In incubation, maintain dissolved oxygen and be 0.5～3.0mg/L, pH and be 3.0～9.0, temperature be 10～40 DEG C, F/M be 0.1～0.8. Approximately 8～24h of each cultivation cycle, wherein at least 4h of aeration time; Through 10～30 cycles, sludge concentration can be cultivatedTo 1000～5000mg/L.
Inoculate above-mentioned salt tolerant activated sludge processes through removing the pretreated decanedioic acid waste water of phenol, this waste water in SBR devicePH is 5.5～6.0, and after inoculation, in SBR, sludge concentration is 4000～5000mg/L. The single cycle of SBR is 12h, rate of water exchange 1/4,The 2h of wherein intaking, unlimited aeration, aeration 11h, static 0.5h, draining 0.5h, F/M is 0.3～0.5, in aeration process, controlsDissolved oxygen processed is 2.0～3.0mg/L, and pH is 3.0～9.0, water outlet COD < 500mg/L, volatile phenol < 0.5mg/L.
Embodiment 10, a kind of decanedioic acid waste water aerobic biochemical processing method experiment:
Certain enterprise's decanedioic acid factory effluent, COD is 12000～15000mg/L, phenol content is 3000～4000mg/L, adoptsWaste water is removed to phenol pretreatment with secondary octanol, reclaim the phenol in waste water simultaneously. After removing phenol pretreatment, waste water COD is 2500～3000mg/L, phenol content is 50～100mg/L.
Get above-mentioned removing under the pretreated decanedioic acid waste water of phenol 50L room temperature and carry out ageing, digestion time 2 months, aging periodBetween 30～35 DEG C of temperature average out to, do not do other processing.
It is in 6～10% the aqueous solution that the decanedioic acid waste water 200mL that gets above-mentioned ageing joins 800mL sodium sulfate concentration, shouldThe aqueous solution is prepared with running water, supplement N(urea), P(potassium dihydrogen phosphate), in the batch reactor of 1000mL, carry out aeration trainingSupport 72～80h, treat that microscopic examination increases or can obviously observe nutrient solution change muddiness to micro organism quantity, detects simultaneouslyCOD and phenol major part are degraded, and leave standstill after half an hour, discharge 500mL nutrient solution, and the decanedioic acid that supplements 200mL ageing is uselessWater supplements N, P simultaneously, and aeration is cultivated, and when the clearance that COD or phenol detected is greater than 80%, supplements new ageing decanedioic acid waste waterContinue to cultivate; Until nutrient solution becomes obvious muddiness, and have mud flco to form, biomass concentration is increased to 300mg/L simultaneouslyAbove. 30～40 DEG C of holding temperatures in incubation, pH is 3.0～9.0 and large fluctuation does not occur. Can be by the later stage of cultivatingGradually with the decanedioic acid waste water through replace ageing except the pretreated fresh decanedioic acid waste water of phenol.
When occurring obvious biological floe in nutrient solution, and after MLSS > 500mg/L, in incubation, maintain dissolved oxygenBe that 0.5～3.0mg/L, pH are 3.0～9.0, temperature is that 10～40 DEG C, F/M are 0.2～0.4, and ensure not occur large rippleMoving. Through 10～30 cycles, sludge concentration can be cultured to 2000～5000mg/L.
Inoculate above-mentioned salt tolerant activated sludge processes through removing the pretreated decanedioic acid of phenol in continuous activated sludge subtraction unitWaste water, this wastewater pH is 5.0～6.0, and Aerobic Pond volume is 200L, and after inoculation, sludge concentration is 2000～3000mg/L. Water inletFlow is 4000mL/h, and F/M is 0.4～0.7, and dissolved oxygen is 2.0～3.0mg/L, and pH is 6.0～9.0, and return sludge ratio is100%, can make water outlet COD < 400mg/L, volatile phenol < 0.5mg/L.
Embodiment 11, a kind of decanedioic acid waste water aerobic biochemical processing method experiment:
Certain enterprise's decanedioic acid factory effluent, COD is 12000～15000mg/L, phenol content is 3000～4000mg/L, adoptsWaste water is removed to phenol pretreatment with HLE type complexing extractant, reclaim the phenol in waste water simultaneously. Waste water after removing phenol pretreatmentCOD is 1000～1200mg/L, and phenol content is 10～40mg/L.
Get above-mentioned removing under the pretreated decanedioic acid waste water of phenol 50L room temperature and carry out ageing, digestion time 6 months, aging periodBetween 20～30 DEG C of temperature average out to, do not do other processing.
It is 6～10% that decanedioic acid waste water 100～200mL of getting above-mentioned ageing joins 800～900mL sodium sulfate concentrationIn the aqueous solution, this aqueous solution is prepared with running water, supplement N(ammonium sulfate), P(potassium dihydrogen phosphate), in the intermittent reaction of 1000mLIn device, carry out aeration cultivate 72～80h, treat microscopic examination arrive micro organism quantity increase, the large portion of COD and phenol detected simultaneouslyDivide and degraded, leave standstill after half an hour, discharge 500mL nutrient solution, supplement the decanedioic acid waste water of 100～200mL ageing, all the other useWater distribution supplements, and supplements N, P simultaneously, and aeration is cultivated, and when the clearance that COD or phenol detected is greater than 80%, supplements new ageing last of the ten Heavenly stems twoAcid waste water continues to cultivate; Until nutrient solution becomes obvious muddiness, and have mud flco to form, biomass concentration is increased to simultaneouslyMore than 300mg/L. 30～40 DEG C of holding temperatures in incubation, pH is 3.0～9.0 and large fluctuation does not occur. What cultivateLater stage can be gradually with the decanedioic acid waste water through replace ageing except the pretreated fresh decanedioic acid waste water of phenol.
When occurring obvious biological floe in nutrient solution, and after MLSS > 500mg/L, dissolved oxygen in maintain processBe that 0.5～3.0mg/L, pH are 3.0～9.0, temperature is that 10～40 DEG C, F/M are 0.1～0.3, and ensure not occur large rippleMoving. Through 20～30 cycles, sludge concentration can be cultured to 1000～3000mg/L.
Inoculate above-mentioned salt tolerant activated sludge processes through removing the pretreated decanedioic acid of phenol in continuous activated sludge subtraction unitWaste water, this wastewater pH is 5.5～6.0, and Aerobic Pond volume is 200L, and seed sludge concentration is 2000～3000mg/L, adds simultaneouslyThe floating stuffing φ 25mm × 10mm that enters approximately 30% volume, advanced waste water biofilm is cultivated the about 30d time, make MLSS reach 6000～8000mg/L. Flow of inlet water is 4000mL/h, and F/M is 0.1～0.3, and dissolved oxygen is 2.0～3.0mg/L, pH is 6.0～9.0,, then enter decanedioic acid waste water and process, can make water outlet COD < 150mg/L, volatile phenol < 0.5mg/L.
Embodiment 12, a kind of decanedioic acid waste water aerobic biochemical processing method experiment:
Certain enterprise's decanedioic acid factory effluent, COD is 12000～15000mg/L, phenol content is 3000～4000mg/L, extractionBetween picking up the car, adopt castor oil acid to remove phenol pretreatment to waste water, castor oil acid is back to production, workshop together with the phenol of extractionWater outlet COD is 3500～4200mg/L, and phenol content is 50～100mg/L, and pH is 5.0～6.0.
Above-mentioned except the pretreated decanedioic acid waste water of phenol 400m3Be stored in accident pool, then add waste water extraction plant attachedNearly soil 10kg, places 5 months naturally, and between storage period, 15～32 DEG C of temperature average out to, do not do other processing. Waste water ageing finishesAfter, detect that COD is 2935mg/L, phenol 75mg/L.
At sewage plant 300m3First exposing to the sun in pond, with 100～150m3Sanitary sewage as the water of salt tolerant activated sludge cultureSource, making concentration after adding industrial sulphuric acid sodium preparation to dissolve is 6～10%, supplements urea, dipotassium hydrogen phosphate simultaneously, enters waste water 30m3，First open and stir 4h, waste water is fully mixed, then start to carry out the vexed cultivation of exposing to the sun, little tolerance continuously vexed exposing to the sun is cultivated 72h. ThenStatic 2h, extracts 1/2 upper solution out with water pump, sanitary sewage 100～150m3 that supplementary sodium sulfate concentration is 6～10%, then mendFill 30m3Ageing decanedioic acid waste water, first opens and stirs 4h, then carries out aeration and cultivates 48h. The 3rd cycle, 1/2 water of still draining,Supplement 100～150m3Sodium sulfate concentration is 6～10% sanitary sewage and 30m3Ageing decanedioic acid waste water, first opens and stirs 4h, thenAeration is cultivated 24h. So, the decanedioic acid influent waste water amount in single cycle maintains 30m3Left and right, aeration incubation time contracting simultaneouslyBe as short as 12h, to detect that COD or phenol clearance > 80% adjust as criterion.
Cultivate after 2 weeks, in the pond of just exposing to the sun, occur macroscopic biological floe, by extraction plant through except phenol pretreated last of the ten Heavenly stemsDiacid waste water pumps into accident pool. Each inflow first maintains 30m3, after the degradation effect of COD and phenol is stable, inflow byThe cumulative 50m that adds to3、60m3, 80m3 and 100m3, corresponding being reduced to of inflow of the sanitary sewage containing 6～10% sodium sulphate of preparation100m3、90m3、70m3And 50m3, sludge concentration is cultured to 2000～4000mg/L.
In whole salt tolerant activated sludge culture and decanedioic acid Waste Water Treatment start-up course, maintain pH and be 6.0～9.0,Dissolved oxygen is that 0.5～3.0mg/L, temperature are 25～35 DEG C.
The salt tolerant active sludge intermixture obtaining is cultivated in the above-mentioned pond of just exposing to the sun and join other biochemistry pool, enter successively decanedioic acidWaste water is cultivated, and can cultivate and obtain salt tolerant activated sludge at all biochemistry pools. Then adopt continuous processing to process decanedioic acidWaste water, and to maintain F/M be 0.2～0.4, can make biochemical section water outlet COD < 500mg/L, phenol < 0.5mg/L.
Claims (8)
1. a decanedioic acid waste water aerobic biochemical processing method, is characterized in that: the method is in the situation of not diluting not desalinationUnder by aerobic process, decanedioic acid waste water is carried out to biochemical treatment at normal temperatures, make water outlet COD < 500mg/L, its concrete stepsComprise:
(1) cultivation of salt tolerant activated sludge: the aqueous sodium persulfate solution that is 5～15% by concentration by decanedioic acid wastewater dilution to COD< 500mg/L, volatile phenol < 50mg/L, shaken cultivation or aeration are cultivated; After the degradation rate > 80% of COD or volatile phenol, leave standstillSedimentation, the supernatant of discharge 1/6～1/2 volume, supplements decanedioic acid waste water and continues to cultivate, and repeats until go out after standing sedimentationExisting flco and MLSS > 300mg/L; Maintain F/M≤0.80, flco concentration is cultured to MLSS > 2000mg/L, obtain salt tolerant and liveProperty mud; In whole process, maintain pH and be 3.0～9.0, dissolved oxygen DO≤4.0mg/L;
(2) aerobic treatment of decanedioic acid waste water: inoculate salt tolerant activated sludge that above-mentioned cultivation obtains to aerobic treatmentDevice, makes MLSS >=500mg/L in biochemical device, enters decanedioic acid waste water and processes under aeration condition, progressively improves the last of the ten Heavenly stems twoAcid influent waste water load is tamed, and operational factor control is: dissolved oxygen 2.0≤DO≤4.0mg/L, 6.0≤pH≤9.0,0.1≤F/M≤0.80。
2. a kind of decanedioic acid waste water aerobic biochemical processing method according to claim 1, is characterized in that: decanedioic acid waste waterBefore entering biochemical treatment, first carry out pretreatment except phenol, make Determination of Volatile Phenol in Refinery Wastewater < 200mg/L, COD < 5000mg/L.
3. a kind of decanedioic acid waste water aerobic biochemical processing method according to claim 2, is characterized in that: described except phenol pre-Treatment process is castor oil acid extraction, secondary octanol extraction, complexometric extraction or macroporous resin adsorption.
4. according to a kind of decanedioic acid waste water aerobic biochemical processing method described in claim 1 or 2 or 3, it is characterized in that: step(1) the decanedioic acid waste water described in is that decanedioic acid waste water is deposited to the decanedioic acid waste water that carries out ageing at least 1 month at normal temperatures.
5. a kind of decanedioic acid waste water aerobic biochemical processing method according to claim 1, is characterized in that: in step (1)Add ordinary activated sludge, flocculant, flyash or active carbon, to improve the formation speed of flco.
6. a kind of decanedioic acid waste water aerobic biochemical processing method according to claim 1, is characterized in that: step (1) addsEnter saline-alkali soil, seawater, bittern or salt mine, to improve the culture effect of salt tolerant activated sludge.
7. a kind of decanedioic acid waste water aerobic biochemical processing method according to claim 1, is characterized in that: salt tolerant is active dirtyIn mud incubation, supplement on demand N and P.
8. a kind of decanedioic acid waste water aerobic biochemical processing method according to claim 1, is characterized in that: in step (2),The pH of decanedioic acid influent waste water is 5.0-6.5.
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| JP2002011494A (en) * | 2000-06-30 | 2002-01-15 | Osaka Gas Co Ltd | Method for treating organic wastewater involving treatment of active sludge |
| CN101434445A (en) * | 2008-12-19 | 2009-05-20 | 天津大学 | Processing system and operation method for phosphor-containing organic wastewater |
| CN102424478A (en) * | 2011-10-28 | 2012-04-25 | 宝钢工程技术集团有限公司 | Waste water treatment system for microorganism proliferating device |
| CN102503034A (en) * | 2011-11-08 | 2012-06-20 | 中蓝连海设计研究院 | Treatment method of phenol-containing liquid waste in sebacic acid production |
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| JP2002011494A (en) * | 2000-06-30 | 2002-01-15 | Osaka Gas Co Ltd | Method for treating organic wastewater involving treatment of active sludge |
| CN101434445A (en) * | 2008-12-19 | 2009-05-20 | 天津大学 | Processing system and operation method for phosphor-containing organic wastewater |
| CN102424478A (en) * | 2011-10-28 | 2012-04-25 | 宝钢工程技术集团有限公司 | Waste water treatment system for microorganism proliferating device |
| CN102503034A (en) * | 2011-11-08 | 2012-06-20 | 中蓝连海设计研究院 | Treatment method of phenol-containing liquid waste in sebacic acid production |
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