CN101708892B - Advanced treatment method for coal chemical wastewater - Google Patents
Advanced treatment method for coal chemical wastewater Download PDFInfo
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- CN101708892B CN101708892B CN2009103105396A CN200910310539A CN101708892B CN 101708892 B CN101708892 B CN 101708892B CN 2009103105396 A CN2009103105396 A CN 2009103105396A CN 200910310539 A CN200910310539 A CN 200910310539A CN 101708892 B CN101708892 B CN 101708892B
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The invention discloses an advanced treatment method for coal chemical wastewater, relates to an advanced treatment method for industrial wastewater, and solves the problems of low BOD/COD value of the coal chemical wastewater, long carrier film forming, slow startup process for a reactor and long waiting time before stabilization existing in the conventional advanced treatment method for an aerobic biological film. The method comprises the following steps of: (1) adding a biological filler and active sludge to the reactor; (2) adding the coal chemical wastewater to be treated, methanol production wastewater and KH2PO4 in turn; (3) introducing air into the reactor; and (4) carrying out static settling after aeration so as to finish the advanced treatment on the coal chemical wastewater. The advanced treatment method for coal chemical wastewater lowers the effluent COD, achieves a carrier film biomass of 0.207 to 0.368 gram of TSS/g of filler, enhances BOD/COD ratio, shortens the film forming process in the reactor and realizes stable running of the reactor within a short period of time. The advanced treatment method for coal chemical wastewater is characterized by simple operation and low cost.
Description
Technical field
The present invention relates to a kind of deep treatment method of trade effluent.
Background technology
Coal chemical industrial waste water is the coal high temperature carbonization, the industrial organic waste water that produces in gas purification and byproduct recovery and the treating process, the waste water complicated component, organism is many with phenolic compound, the heterogeneous ring compound of polycyclc aromatic compound and nitrogenous, oxygen, sulphur is formed, and contains the ammonia nitrogen of higher concentration simultaneously.This kind coal chemical industrial waste water is big for microorganism toxicity, belongs to difficult trade effluent.Coal chemical industrial waste water is after biochemical treatment, and pollutents such as phenol wherein, cyanogen can reach discharging standards basically, and the COD of water outlet and ammonia nitrogen often do not satisfy emission standard, need could satisfy emission request by advanced treatment.At present the advanced treatment coal chemical industrial waste water is commonly used physical chemistry treatment process, bioremediation and membrane processing method three major types method, and the aerobic biologic membrane advanced treatment method that belongs in these three class methods in the bioremediation is method the most commonly used; Aerobic biologic membrane advanced treatment method can effectively purify waste water, has advantage energy-conservation, that technology is simple, equipment is simple, easy to operate again simultaneously, but aerobic biologic membrane advanced treatment method but exists in the treating processes because coal chemical industrial waste water BOD/COD extremely low (less than 0.1), and making the carrier biofilm need 1～2 month time, reactor needs the time more than 2 months just can reach the steady running problem usually.
Summary of the invention
The present invention seeks to exist in order to solve existing aerobic biologic membrane advanced treatment method that coal chemical industrial waste water BOD/COD value is very low in the treating processes, the carrier biofilm is long, the start-up course of reactor is slow and reach long problem steady time, and a kind of deep treatment method that is used for coal chemical industrial waste water is provided.
The advanced treatment that is used for coal chemical industrial waste water realizes according to the following steps: one, successively biologic packing material, active sludge are joined reactor; Two, add pending coal chemical industrial waste water and methanol production waste water, form pending Coal Chemical Industry and methanol production composite waste, then according to COD: P=100: 1 ratio adds KH in pending Coal Chemical Industry and methanol production composite waste
2PO
4Three, bubbling air dissolved oxygen concentration to pending Coal Chemical Industry and the methanol production composite waste is 3～5mg/L in reactor; Four, reactor is carried out aeration and handle 23h, quiescent setting 1h then promptly finishes the advanced treatment of coal chemical industrial waste water; Wherein the biologic packing material add-on is 25%～35% of a reactor volume in the step 1, and biologic packing material is the one or more combination in polyethylene, polypropylene, polystyrene and the urethane; Add 2000～3000mg active sludge in the every liter capacity of reactor in the step 1; The biochemical oxygen demand (BOD) of methanol production waste water is 0.5～2: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water in the step 2; The methanol production waste water COD
CrValue is 10000～20000mg/L; The aeration rate of aeration is 5～10L/min in the step 4.
Adopt the present invention to be used for that water outlet COD is 120～200mg/L after the advanced treatment of coal chemical industrial waste water, the carrier film biomass is 0.207～0.368gTSS/g filler, by adding methanol production waste water the BOD/COD ratio of pending coal chemical industrial waste water is brought up to 0.35～0.6, biologic packing material in the reactor can be finished biofilm, the smooth running of realization response device in 5～10 days of operation.
The present invention adopts methanol production waste water can promote the biofilm of carrier, again may command the hypertrophy of suspension microorganism, can reach the effect that reduces excess sludge production.
The present invention is simple to operate, and working cost is low, and methanol production waste water can directly be drained in the advanced treatment process by pipeline, do not need manually to add, saved the operation expense, methanol production waste water has also obtained good treatment in as additional carbon, saved processing costs.
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: the advanced treatment that present embodiment is used for coal chemical industrial waste water realizes according to the following steps: one, successively biologic packing material, active sludge are joined reactor; Two, add pending coal chemical industrial waste water and methanol production waste water, form pending Coal Chemical Industry and methanol production composite waste, then according to COD: P=100: 1 ratio adds KH in pending Coal Chemical Industry and methanol production composite waste
2PO
4Three, bubbling air dissolved oxygen concentration to pending Coal Chemical Industry and the methanol production composite waste is 3～5mg/L in reactor; Four, reactor is carried out aeration and handle 23h, quiescent setting 1h then promptly finishes the advanced treatment of coal chemical industrial waste water; Wherein the biologic packing material add-on is 25%～35% of a reactor volume in the step 1, and biologic packing material is the one or more combination in polyethylene, polypropylene, polystyrene and the urethane; Add 2000～3000mg active sludge in the every liter capacity of reactor in the step 1; The biochemical oxygen demand (BOD) of methanol production waste water is 0.5～2: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water in the step 2; The methanol production waste water COD
CrValue is 10000～20000mg/L; The aeration rate of aeration is 5～10L/min in the step 4.
When biologic packing material such as two or more the combination, can mix in the present embodiment step 1 by any ratio.
The waste water of methanol production waste water for producing in the production of methyl alcohol and treating process wherein mainly contains methyl alcohol, ethanol and aldehydes pollutent in the present embodiment step 2, and BOD/COD is higher, has good biodegradability.
Add after the methanol production waste water in the present embodiment step 2, pending coal chemical industrial waste water biodegradability is improved, and helps microorganism growth, both can accelerate the biofilm speed of biologic packing material, can improve microbic activity in the pending coal chemical industrial waste water again, strengthen its treatment effect.
Embodiment two: what present embodiment and embodiment one were different is that the biologic packing material add-on is 28%～32% of a reactor volume in the step 1.Other step and parameter are identical with embodiment one.
Embodiment three: what present embodiment and embodiment one were different is that the biologic packing material add-on is 30% of a reactor volume in the step 1.Other step and parameter are identical with embodiment one.
Embodiment four: what present embodiment and embodiment one to three were different is to add 2200～2800mg active sludge in the every liter capacity of reactor in the step 1.Other step and parameter are identical with embodiment one to three.
Embodiment five: what present embodiment and embodiment one to three were different is to add the 2500mg active sludge in the step 1 in the every liter capacity of reactor.Other step and parameter are identical with embodiment one to three.
Embodiment six: present embodiment and embodiment one to five are different is that the ratio of biochemical oxygen demand (BOD) and the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water of methanol production waste water in the step step 2 is 0.8～1.4: 1.Other step and parameter are identical with embodiment one to five.
Embodiment seven: present embodiment and embodiment one to five are different is that the ratio of biochemical oxygen demand (BOD) and the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water of methanol production waste water in the step 2 is 1: 1.Other step and parameter are identical with embodiment one to five.
Embodiment eight: what present embodiment and embodiment seven were different is the methanol production waste water COD
CrValue is 12000～28000mg/L.Other step and parameter are identical with embodiment seven.
Embodiment nine: what present embodiment and embodiment seven were different is the methanol production waste water COD
CrValue is 15000～25000mg/L.Other step and parameter are identical with embodiment seven.
Embodiment ten: what present embodiment and embodiment seven were different is the methanol production waste water COD
CrValue is 20000mg/L.Other step and parameter are identical with embodiment seven.
Embodiment 11: present embodiment and embodiment one to ten are different be in the step 3 in pending Coal Chemical Industry and the methanol production composite waste dissolved oxygen concentration be 3.5～4.5mg/L.Other step and parameter are identical with embodiment one to ten.
Embodiment 12: present embodiment and embodiment one to ten are different be in the step 3 in pending Coal Chemical Industry and the methanol production composite waste dissolved oxygen concentration be 4.0mg/L.Other step and parameter are identical with embodiment one to ten.
Embodiment 13: present embodiment and embodiment one to 12 are different is that the aeration rate of aeration in the step 4 is 6～9L/min.Other step and parameter are identical with embodiment one to 12.
Embodiment 14: present embodiment and embodiment one to 12 are different is that the aeration rate of aeration in the step 4 is 8L/min.Other step and parameter are identical with embodiment one to 12.
Embodiment 15: the advanced treatment that present embodiment is used for coal chemical industrial waste water realizes according to the following steps: one, successively biologic packing material, active sludge are joined reactor; Two, add pending coal chemical industrial waste water and methanol production waste water, form pending Coal Chemical Industry and methanol production composite waste, then according to COD: P=100: 1 ratio adds KH in pending Coal Chemical Industry and methanol production composite waste
2PO
4Three, bubbling air dissolved oxygen concentration to pending Coal Chemical Industry and the methanol production composite waste is 4mg/L in reactor; Four, reactor is carried out aeration and handle 23h, quiescent setting 1h then promptly finishes the advanced treatment of coal chemical industrial waste water; Wherein the biologic packing material add-on is 32% of a reactor volume in the step 1, and to be polyethylene and polypropylene mix by 1: 1 mass ratio biologic packing material; Add the 2500mg active sludge in the step 1 in the every liter capacity of reactor; The biochemical oxygen demand (BOD) of methanol production waste water is 1.5: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water in the step 2; The methanol production waste water COD
CrValue is 15000mg/L; The aeration rate of aeration is 7L/min in the step 4.
Water outlet COD after the deep treatment method of employing present embodiment coal chemical industrial waste water is handled is 152mg/L (COD of water inlet is 194mg/L before handling), and the carrier film biomass is the 0.217gTSS/g filler.
The BOD/COD ratio of present embodiment coal chemical industrial waste water is 0.48, and the biologic packing material in the reactor can be finished biofilm in 7 days of operation.
Embodiment 16: the advanced treatment that present embodiment is used for coal chemical industrial waste water realizes according to the following steps: one, successively biologic packing material, active sludge are joined reactor; Two, add pending coal chemical industrial waste water and methanol production waste water, form pending Coal Chemical Industry and methanol production composite waste, then according to COD: P=100: 1 ratio adds KH in pending Coal Chemical Industry and methanol production composite waste
2PO
4Three, bubbling air dissolved oxygen concentration to pending Coal Chemical Industry and the methanol production composite waste is 4mg/L in reactor; Four, reactor is carried out aeration and handle 23h, quiescent setting 1h then promptly finishes the advanced treatment of coal chemical industrial waste water; Wherein the biologic packing material add-on is 30% of a reactor volume in the step 1, and to be polyethylene, polypropylene and urethane mix by 1: 1: 2 mass ratio biologic packing material; Add the 2800mg active sludge in the step 1 in the every liter capacity of reactor; The biochemical oxygen demand (BOD) of methanol production waste water is 1: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water in the step 2; The methanol production waste water COD
CrValue is 18000mg/L; The aeration rate of aeration is 5L/min in the step 4.
Water outlet COD after the deep treatment method of employing present embodiment coal chemical industrial waste water is handled is 126mg/L (COD of water inlet is 190mg/L before handling), and the carrier film biomass is the 0.368gTSS/g filler.
The BOD/COD ratio of present embodiment coal chemical industrial waste water is 0.58, and the biologic packing material in the reactor can be finished biofilm in 5 days of operation.
Embodiment 17: the advanced treatment that present embodiment is used for coal chemical industrial waste water realizes according to the following steps: one, successively polystyrene, active sludge are joined reactor; Two, add pending coal chemical industrial waste water and methanol production waste water, form pending Coal Chemical Industry and methanol production composite waste, then according to COD: P=100: 1 ratio adds KH in pending Coal Chemical Industry and methanol production composite waste
2PO
4Three, bubbling air dissolved oxygen concentration to pending Coal Chemical Industry and the methanol production composite waste is 5mg/L in reactor; Four, reactor is carried out aeration and handle 23h, quiescent setting 1h then promptly finishes the advanced treatment of coal chemical industrial waste water; Wherein the polystyrene add-on is 35% of a reactor volume in the step 1; Add the 3000mg active sludge in the step 1 in the every liter capacity of reactor; The biochemical oxygen demand (BOD) of methanol production waste water is 2: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water in the step 2; The methanol production waste water COD
CrValue is 20000mg/L; The aeration rate of aeration is 9L/min in the step 4.
Water outlet COD after the deep treatment method of employing present embodiment coal chemical industrial waste water is handled is 148mg/L (COD of water inlet is 183mg/L before handling), and the carrier film biomass is the 0.303gTSS/g filler.
The BOD/COD ratio of present embodiment coal chemical industrial waste water is 0.40, and the biologic packing material in the reactor can be finished biofilm in 9 days of operation.
Claims (6)
1. a deep treatment method that is used for coal chemical industrial waste water is characterized in that the advanced treatment that is used for coal chemical industrial waste water realizes according to the following steps: one, successively biologic packing material, active sludge are joined reactor; Two, add pending coal chemical industrial waste water and methanol production waste water, form pending Coal Chemical Industry and methanol production composite waste, then according to COD: P=100: 1 ratio adds KH in pending Coal Chemical Industry and methanol production composite waste
2PO
4Three, bubbling air dissolved oxygen concentration to pending Coal Chemical Industry and the methanol production composite waste is 3～5mg/L in reactor; Four, reactor is carried out aeration and handle 23h, quiescent setting 1h then promptly finishes the advanced treatment of coal chemical industrial waste water; Wherein the biologic packing material add-on is 25%～35% of a reactor volume in the step 1, and biologic packing material is the one or more combination in polyethylene, polypropylene, polystyrene and the urethane; Add 2000～3000mg active sludge in the every liter capacity of reactor in the step 1; The biochemical oxygen demand (BOD) of methanol production waste water is 0.5～2: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water in the step 2; The methanol production waste water COD
CrValue is 10000～20000mg/L; The aeration rate of aeration is 5～10L/min in the step 4.
2. a kind of deep treatment method that is used for coal chemical industrial waste water according to claim 1 is characterized in that the biologic packing material add-on is 28%～32% of a reactor volume in the step 1.
3. a kind of deep treatment method that is used for coal chemical industrial waste water according to claim 1 and 2 is characterized in that adding 2200～2800mg active sludge in the every liter capacity of reactor in the step 1.
4. a kind of deep treatment method that is used for coal chemical industrial waste water according to claim 3, the biochemical oxygen demand (BOD) that it is characterized in that methanol production waste water in the step 2 is 0.8～1.4: 1 with the ratio of the biochemical oxygen demand (BOD) of pending coal chemical industrial waste water.
5. according to claim 1,2 or 4 described a kind of deep treatment methods that are used for coal chemical industrial waste water, it is characterized in that in the step 3 that dissolved oxygen concentration is 3.5～4.5mg/L in the pending Coal Chemical Industry and methanol production composite waste.
6. a kind of deep treatment method that is used for coal chemical industrial waste water according to claim 5, the aeration rate that it is characterized in that aeration in the step 4 is 6～9L/min.
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| CN2009103105396A CN101708892B (en) | 2009-11-27 | 2009-11-27 | Advanced treatment method for coal chemical wastewater |
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| CN2009103105396A CN101708892B (en) | 2009-11-27 | 2009-11-27 | Advanced treatment method for coal chemical wastewater |
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| CN101708892A CN101708892A (en) | 2010-05-19 |
| CN101708892B true CN101708892B (en) | 2011-05-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102002408A (en) * | 2010-12-16 | 2011-04-06 | 哈尔滨工业大学 | Marsh gas biological desulphurization energy-saving method |
| CN102515351B (en) * | 2011-12-15 | 2013-06-19 | 哈尔滨工业大学 | Biological thickening device for reducing pollutants in coal chemical industry wastewater |
| CN102992351B (en) * | 2012-11-05 | 2014-05-28 | 青岛科技大学 | Method and device for purifying ammonia recovered from coal chemical industry wastewater |
| CN104355501B (en) * | 2014-11-18 | 2016-05-04 | 中国环境科学研究院 | A kind of acetone production process produces the processing method of waste water |
| CN104496122B (en) * | 2014-12-23 | 2017-01-04 | 吉林建筑大学 | Micro-oxygen Co metabolism processes the method for brown coal upgrading waste water |
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