CN101070218A - Neutralization-free furfural waste-water biochemical treatment process - Google Patents

Neutralization-free furfural waste-water biochemical treatment process Download PDF

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Publication number
CN101070218A
CN101070218A CN 200710062165 CN200710062165A CN101070218A CN 101070218 A CN101070218 A CN 101070218A CN 200710062165 CN200710062165 CN 200710062165 CN 200710062165 A CN200710062165 A CN 200710062165A CN 101070218 A CN101070218 A CN 101070218A
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water
pond
sequencing batch
sludge
furfural waste
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CN 200710062165
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Chinese (zh)
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张动科
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张动科
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Priority to CN 200710062165 priority Critical patent/CN101070218A/en
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Abstract

This invention relates to a neutralization-free furfural wastewater biochemical treatment craft. First furfural wastewater enter balancing tank, then enter upwash type anaerobic sludge bed reactor by the exaltation of slush pump, add furfural wastewater nutrient solution and granular activated carbon to the pool of upwash type anaerobic sludge bed reactor; then the water after disposing of upwash type anaerobic sludge bed reactor enter vertical sedimentation tank, then influx intermediate pool; water in the intermediate pool according to sequencing batch type activated sludge process enter pool by the exaltation of sequencing batch type activated sludge process influent pump; the water from pool of sequencing batch type activated sludge process enter clean water basin, then reclaimed or discharged. The described nutrient solution according to weight is mixture of urea 80.47%, trisodium phosphate 13.44%, white ash 3.17%, iron power 0.56%, ferrous sulfate 0.56%, magnesium sulfate 0.43%, cobaltous chloride 0.097%, nickelous chloride 0.073%, zinc chloride 0.48%, cupric sulfate 0.24%, vitamin B5 0.24% and vitamin B12 0.24% and water.

Description

In exempting from and furfural waste-water biochemical treatment process
One, technical field
The present invention relates in a kind of the exempting from and the furfural waste-water biochemical processing, is a kind of treatment process of furfural production industry trade effluent.
Two, background technology
Present furfural waste-water treatment technology mainly contains physics method, chemical method and biochemical process.
(1) physics method: mainly contain multiple-effect evaporation technology, membrane filtration process, multiple-effect evaporation is to utilize aldehyde vapour waste heat evaporation waste water, and the water of condensation back boiler that is evaporated continues to use or discharging after treatment, and the waste water after concentrating send boiler to burn.These technology existing problems are to produce the wastewater flow rate big (22 tons) that furfural per ton produces, and the shortage of heat that corresponding aldehyde vapour can provide is to evaporate all waste water, only the stand sub-fraction of wastewater flow rate of waste water that can evaporation, remaining waste water can not burn in boiler.And this technology investment is big, complex process, the working cost height.Membrane filtration process is coagulating sedimentation+filtration+ultrafiltration+reverse osmosis, because the CODcr of furfural waste-water is about 2000mg/L, this art breading furfural waste-water ultrafiltration and reverse osmosis are cleaned frequent, and failure rate is very high, does not have the example of success.
(2) chemical method: be mainly extraction process, this technology is that furfural waste-water is extracted through entering in the extraction tank after filtering, and extraction liquid enters solvent recovery tower, recycle through distillation solvent, overhead product enters sour concentration tower, obtains dense acetic acid, and continues to recycle from the cat head water outlet.This technological equipment investment is big, an enterprise that produces 2500 tons of furfurals per year, and this technology investment is about 2,500,000 yuan.Working cost height, the processing costs of furfural waste-water per ton are about 8 ~ 10 yuan.
(3)---anaerobism---aerobic process, neutralization---up flow anaerobic sludge blanket reactor---catalytic oxidation, neutralization---technologies such as up flow anaerobic sludge blanket reactor sequencing batch active sludge that biochemical process: biochemical processing process has lightning to separate, lightning is separated technology and can be removed portion C ODcr and PH is raise, the organism that can decompose the part difficult degradation, but also brought redness to furfural waste-water simultaneously, this color is difficult to remove in follow-up technology.And in and technology have and adopt the lime neutral, the caustic soda of employing neutral is also arranged, in the furfural waste-water per ton and expense very high, in the lime and expense be 2 ~ 3 yuan, in the caustic soda and expense be 7 ~ 9 yuan.Anaerobic treatment unit and aerobic processing unit operating performance in the actual engineering of reality is poor, and instability is difficult to realize qualified discharge.
Three, summary of the invention:
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of investment is little, technology is simple, treatment effect is good, working cost is low exempt from and furfural waste-water biochemical treatment process.
Purpose of the present invention can realize by following technical scheme:
In a kind of the exempting from and furfural waste-water biochemical treatment process, it is at first to enter equalizing tank by furfural waste-water, under the lifting of sump pump, enter up flow anaerobic sludge blanket reactor then, in the pond of up flow anaerobic sludge blanket reactor, add furfural waste-water nutritive medium and granular carbon, water after up flow anaerobic sludge blanket reactor is handled enters vertical sedimentation tank, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, the water that comes out from the pond of sequencing batch active sludge flows into clean water basin, reuse or qualified discharge then, described nutritive medium is a urea 80.47%, tertiary sodium phosphate 13.44%, lime 3.17%, iron powder 0.56%, ferrous sulfate 0.56%, sal epsom 0.43%, cobalt chloride 0.097%, nickelous chloride 0.073%, zinc chloride 0.48%, copper sulfate 0.24%, vitamin B5 0.24% and vitamin B12 0.24% add the solution that water forms by weight ratio.
Purpose of the present invention can also realize by following technical scheme:
The water outlet of sequencing batch active sludge flows into strong oxidation pond, adds strong oxidizer simultaneously in strong oxidation pond, through strong oxidation pond water and strong oxidizer is reacted in strong oxidation pond, and the water outlet after strong oxidation pond is handled flows into clean water basin.
The water that the present invention handles through up flow anaerobic sludge blanket reactor enters in the vertical sedimentation tank, the excess sludge of discharging from up flow anaerobic sludge blanket reactor pond, sequencing batch active sludge pond and vertical sedimentation tank all enters in the sludge drying bed and dewaters, sludge incineration after the dehydration is handled or is done farm manure and uses, the water of deviating from is back to equalizing tank and continues to accept processing, up flow anaerobic sludge blanket reactor is provided with the collecting methane system, and this collecting methane system is biogas storage tank or biogas utilization system.
The water that the present invention handles through vertical sedimentation tank enters the anaerobism circulatory pool, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, is provided with recycle pump between anaerobism circulatory pool and up flow anaerobic sludge blanket reactor.
The present invention is provided with accident pool between furfural waste-water and equalizing tank, accident pool enter equalizing tank at furfural waste-water by sump pump.
The present invention compared with prior art has following advantage:
1, removed neutralizing treatment unit in the existing biochemical process: furfural waste-water directly enters up flow anaerobic sludge blanket reactor without any need for handling, utilize organic acid and organic pollutant in the anerobe decomposition furfural waste-water, the processing costs of furfural waste-water per ton is reduced significantly, and furfural waste-water processing costs per ton is reduced to about 2.0 yuan.
2, the biological special nutrient fluid of furfural waste-water: by replenishing the biological special nutrient fluid of furfural waste-water, improve the ability of the decomposing organic pollutant of anerobe and aerobic bacteria, the organic pollutant in the furfural waste-water is decomposed completely.
3, in up flow anaerobic sludge blanket reactor, add granular carbon: can all provide a good anaerobism living environment for anaerobism by replenishing gac, make the capacity of decomposition of anerobe stronger, simultaneously gac can the absorbed portion Persistent organic pollutants, and can reduce the loss of anerobe.
4, strong oxide treatment unit is standby treatment measures, and the phenomenon in case the unit water outlet of generation aerobic treatment exceeds standard can be guaranteed the water outlet qualified discharge with strong oxide treatment unit.
Four, description of drawings
Fig. 1 is in exempting from and the general flow chart of furfural waste-water biochemical treatment process
Fig. 2 is in a kind of the exempting from and the schema of furfural waste-water biochemical treatment process
Five, embodiment
Fig. 1---shown in 2: in a kind of the exempting from and furfural waste-water biochemical treatment process, it is characterized in that: furfural waste-water at first enters equalizing tank, under the lifting of sump pump, enter up flow anaerobic sludge blanket reactor then, in the pond of up flow anaerobic sludge blanket reactor, add furfural waste-water nutritive medium and granular carbon, water after up flow anaerobic sludge blanket reactor is handled enters vertical sedimentation tank, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, the water that comes out from the pond of sequencing batch active sludge flows into clean water basin, reuse or qualified discharge then, described nutritive medium is a urea 80.47%, tertiary sodium phosphate 13.44%, lime 3.17%, iron powder 0.56%, ferrous sulfate 0.56%, sal epsom 0.43%, cobalt chloride 0.097%, nickelous chloride 0.073%, zinc chloride 0.48%, copper sulfate 0.24%, vitamin B5 0.24% and vitamin B12 0.24% add the solution that water forms by weight ratio.The water outlet of sequencing batch active sludge flows into strong oxidation pond, adds strong oxidizer simultaneously in strong oxidation pond, through strong oxidation pond water and strong oxidizer is reacted in strong oxidation pond, and the water outlet after strong oxidation pond is handled flows into clean water basin; The water of handling through up flow anaerobic sludge blanket reactor enters in the vertical sedimentation tank, the excess sludge of discharging from up flow anaerobic sludge blanket reactor pond, sequencing batch active sludge pond and vertical sedimentation tank all enters in the sludge drying bed and dewaters, sludge incineration after the dehydration is handled or is done farm manure and uses, the water of deviating from is back to equalizing tank and continues to accept processing, up flow anaerobic sludge blanket reactor is provided with the collecting methane system, and this collecting methane system is biogas storage tank or biogas utilization system; The water of handling through vertical sedimentation tank enters the anaerobism circulatory pool, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, is provided with recycle pump between anaerobism circulatory pool and up flow anaerobic sludge blanket reactor; Between furfural waste-water and equalizing tank, be provided with accident pool, accident pool enter equalizing tank at furfural waste-water by sump pump.
Principle of work of the present invention is: furfural waste-water at first enters equalizing tank, enters up flow anaerobic sludge blanket reactor then under the lifting of sump pump, regularly adds the furfural waste-water special nutrient fluid in the pond of up flow anaerobic sludge blanket reactor.Under the physiological action of anerobe, the majority of organic pollutants in the waste water is broken down into methane and water in up flow anaerobic sludge blanket reactor, and the part organic pollutant is broken down into VFA and carbonic acid gas; The biogas that up flow anaerobic sludge blanket reactor produces can be collected, and sets up biogas storage tank and biogas utilization system.Water after up flow anaerobic sludge blanket reactor is handled enters vertical sedimentation tank, separate anerobe and water, water enters the anaerobism circulatory pool, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, organic pollutant in the pond of sequencing batch active sludge in the waste water is decomposed into carbonic acid gas, water by aerobic microbiological, and waste water is purified.The water that comes out from the pond of sequencing batch active sludge flows into clean water basin, reuse or qualified discharge then.
The phenomenon that colourity exceeds standard or CODcr exceeds standard appears in the water outlet of sequencing batch active sludge, the water outlet of sequencing batch active sludge can be flowed into strong oxidation pond, add strong oxidizer simultaneously, water and strong oxidizer are reacted in strong oxidation pond, residue organic pollutant in decolouring and the oxidizing water is that qualified discharge is guaranteed in the water outlet after handling.
The excess sludge of discharging from up flow anaerobic sludge blanket reactor pond, sequencing batch active sludge pond and vertical sedimentation tank all enters in the sludge drying bed and dewaters, and the mud after the dehydration is transported outward burning disposal or done farm manure and use.And being back to equalizing tank, the water of deviating from continues to accept processing.

Claims (5)

1, in a kind of the exempting from and furfural waste-water biochemical treatment process, it is characterized in that: furfural waste-water at first enters equalizing tank, under the lifting of sump pump, enter up flow anaerobic sludge blanket reactor then, in the pond of up flow anaerobic sludge blanket reactor, add furfural waste-water nutritive medium and granular carbon, water after up flow anaerobic sludge blanket reactor is handled enters vertical sedimentation tank, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, the water that comes out from the pond of sequencing batch active sludge flows into clean water basin, reuse or qualified discharge then, described nutritive medium is a urea 80.47%, tertiary sodium phosphate 13.44%, lime 3.17%, iron powder 0.56%, ferrous sulfate 0.56%, sal epsom 0.43%, cobalt chloride 0.097%, nickelous chloride 0.073%, zinc chloride 0.48%, copper sulfate 0.24%, vitamin B5 0.24% and vitamin B12 0.24% add the solution that water forms by weight ratio.
2, in according to claim 1 the exempting from and furfural waste-water biochemical treatment process, it is characterized in that: the water outlet of sequencing batch active sludge flows into strong oxidation pond, in strong oxidation pond, add strong oxidizer simultaneously, through strong oxidation pond water and strong oxidizer are reacted in strong oxidation pond, the water outlet after strong oxidation pond is handled flows into clean water basin.
3, in according to claim 2 the exempting from and furfural waste-water biochemical treatment process, it is characterized in that: the water of handling through up flow anaerobic sludge blanket reactor enters in the vertical sedimentation tank, from the up flow anaerobic sludge blanket reactor pond, the excess sludge of discharging in sequencing batch active sludge pond and the vertical sedimentation tank all enters in the sludge drying bed and dewaters, sludge incineration after the dehydration is handled or is done farm manure and uses, the water of deviating from is back to equalizing tank and continues to accept processing, up flow anaerobic sludge blanket reactor is provided with the collecting methane system, and this collecting methane system is biogas storage tank or biogas utilization system.
4, in according to claim 3 the exempting from and furfural waste-water biochemical treatment process, it is characterized in that: the water of handling through vertical sedimentation tank enters the anaerobism circulatory pool, pond in the middle of flowing into then, water moving law according to sequencing batch active sludge under the lifting of sequencing batch active sludge intake pump in middle pond enters in the pond of sequencing batch active sludge, is provided with recycle pump between anaerobism circulatory pool and up flow anaerobic sludge blanket reactor.
5, in according to claim 4 the exempting from and furfural waste-water biochemical treatment process, it is characterized in that: between furfural waste-water and equalizing tank, be provided with accident pool, accident pool enter equalizing tank at furfural waste-water by sump pump.
CN 200710062165 2007-06-16 2007-06-16 Neutralization-free furfural waste-water biochemical treatment process Pending CN101070218A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781018B (en) * 2010-01-26 2012-02-01 长春工程学院 Furfural wastewater aerobic treatment nutrient
CN105712577A (en) * 2016-02-04 2016-06-29 广州市朔康医疗科技有限公司 Reverse control energy-saving type medical wastewater treatment method and device
CN108610014A (en) * 2018-05-04 2018-10-02 温州大学 Phosphorus recycling and biological ceramic particle regeneration method in the preparation method and haydite of eutrophication water efficient dephosphorization recoverable version biological ceramic particle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101781018B (en) * 2010-01-26 2012-02-01 长春工程学院 Furfural wastewater aerobic treatment nutrient
CN105712577A (en) * 2016-02-04 2016-06-29 广州市朔康医疗科技有限公司 Reverse control energy-saving type medical wastewater treatment method and device
CN108610014A (en) * 2018-05-04 2018-10-02 温州大学 Phosphorus recycling and biological ceramic particle regeneration method in the preparation method and haydite of eutrophication water efficient dephosphorization recoverable version biological ceramic particle

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