CN105481091A - Method for treating chemical wastewater - Google Patents
Method for treating chemical wastewater Download PDFInfo
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- CN105481091A CN105481091A CN201510923001.8A CN201510923001A CN105481091A CN 105481091 A CN105481091 A CN 105481091A CN 201510923001 A CN201510923001 A CN 201510923001A CN 105481091 A CN105481091 A CN 105481091A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F2003/001—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms
- C02F2003/003—Biological treatment of water, waste water, or sewage using granular carriers or supports for the microorganisms using activated carbon or the like
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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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
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Abstract
The invention discloses a method for treating chemical wastewater and belongs to the technical filed of chemical wastewater treatment. According to the method, hedera helix and sansevieria are utilized as the main materials and cleaned and air-dried to be cut into pieces to be juiced, blackening sludge of a river channel is added to perform fermentation treatment, mixture is mixed with cellulase to perform enzymolysis , fly ash is added to be squeezed into a pie shape after enzyme deactivation, mixture is crushed into grains after carbonization, and nitric acid is added to be mixed with sodium percarbonate to be exposed to the sun. The mixture is ground and dried to obtain grains, and the chemical wastewater is introduced and undergoes secondary filtration, and grains are added for anaerobic aeration and aerobiotic aeration. The method has the advantages of being capable of effectively treating the chemical wastewater, simple in operation, short in running time, low in investment cost and good in treatment effect, the removal rate is 8% higher than that of other methods, and the removal rate of biochemical oxygen demand (BOD) reaches 95% or above.
Description
Technical field
The present invention relates to a kind for the treatment of process of wastewater from chemical industry, belong to chemical wastewater treatment technical field.
Background technology
Wastewater from chemical industry is exactly the waste water such as processing wastewater, water coolant, waste gas washing water, equipment and the place wash-down water given off in Chemical Manufacture.If these waste water discharge without process, different properties and the pollution in various degree of water body can be caused, thus the health of harm humans, affect the production of industrial or agricultural.This waste water has toxicity and pungency.In wastewater from chemical industry, some is containing, for example the poisonous or hypertoxic material such as cyanogen, phenol, arsenic, mercury, cadmium or lead, under certain concentration, on biological and production by biological toxigenicity impact.Also the pungency such as mineral acid, bases, corrosive material may be contained in addition.Organic concentration is high.Particularly in petrochemical wastewater, the organic concentration such as various organic acid, alcohol, aldehyde, ketone, ether and epoxide is higher, can further oxygenolysis in water, consumes dissolved oxygens a large amount of in water, the directly hydrobiological existence of impact.PH is unstable.The strongly-acid during waste water of chemical industry emission, time and alkaline phenomenon often has, have great harm to biological, buildings and farm crop.Nutrient laden material is more.The waste water that phosphorous, nitrogen quantity is higher can cause body eutrophication, makes algae and microorganism amount reproduction in water, can cause " red tide ", affect fish growth time serious.Recover more difficult.Being subject to virgin state that waters that objectionable impurities pollutes will return to waters is suitable difficulty.Especially by the heavy metal substance that Institute of Micro-biology concentrates, discharge is stopped still being difficult to eliminate.Chemicals in process of production process water and cooling water amount are very large, and production technique is backward, equipment is outmoded, remove contamination and are difficult to shunting, and water loss is large, water circulation use and recovery utilization rate low; The water quality of wastewater from chemical industry is complicated and pollutant load is high; Pollutent in waste water mostly has toxicity, as heavy metal, lead, cadmium etc.
The method of current process wastewater from chemical industry has Physical, chemical method and biological process, Physical passes through physical action, to be separated, to reclaim the undissolved waste water treatment process in suspended state pollution substance in waste water, according to the difference of physical action, gravitational separation process, centrifugal separation and sieving can be divided into again to retain method etc.; Compared with additive method, Physical has the advantages such as equipment is simple, cost is low, convenient management, effect stability, is mainly used in removing the materials such as floating matter, suspended solids, sand and the oils in waste water, but long operational time, energy consumption is large.Chemical method be separated with effect of mass transmitting by chemical reaction, remove in waste water in dissolving, the pollution substance of colloidal state or be translated into the waste water treatment process of innoxious substance; Can be used to remove the metal ion, tiny colloidal organic matter, inorganics, nutrient for plants, oil in water emulsion, colourity, stink, acid, alkali etc. in waste water, but investment cost is large, cost is high.Biological process is the metabolism by microorganism, makes the Organic pollution substance in solution, colloid and fine suspended state in waste water be converted into stable, harmless method of wastewater treatment.The essence of biological treatment process is a kind of organic substance decomposing process being participated in carrying out by microorganism, if the microbial host bacterium of decomposing organic matter, other microorganism such as algae and protozoon also participate in this process, but effect is less.Therefore the treatment technology of wastewater from chemical industry is one of direction of research at present.
Summary of the invention
Technical problem to be solved by this invention: the water quality for wastewater from chemical industry is complicated and pollutant load is high, adopt Physical, chemical method and Biochemical method complicated operation, long operational time, energy consumption is large, cost is high, the drawback that clearance is low, provide a kind of with ivy and Folium Sansevieriae Trifasclatae for main raw, cleaned after dried bean noodles chopped squeezes the juice, add river course blackout mud and carry out fermentative processing, mix with cellulase again and carry out enzymolysis, go out and add flyash after enzyme and be squeezed into pie, be ground into particle after charing, add nitric acid and SPC-D mixing, through solar exposure.Mill dry obtains particle, then introduces wastewater from chemical industry, after secondary filtration, adds the method for particle through anaerobism aeration and aerobic Air Exposure.Treatment process of the present invention is simple, and cost is low, and clearance is high.
For solving the problems of the technologies described above, the present invention adopts technical scheme as described below to be:
(1) get 1 ~ 2kg ivy and 1 ~ 2kg Folium Sansevieriae Trifasclatae, put into sodium chloride solution immersion 30 ~ 40min that massfraction is 30 ~ 35% respectively, then rinse 2 ~ 3 times with current, after natural air drying, use kitchen knife chopped, put into juice extractor respectively and squeeze the juice;
(2) after having squeezed the juice, ivy slurries after squeezing the juice and Folium Sansevieriae Trifasclatae slurries are put into fermentor tank, get bottom of river channel blackout mud adds wherein simultaneously, add-on is 1:2 with total slurries ratio, then respectively to wherein adding the yeast of 3 ~ 5% and the water of 1 ~ 3%, controlling temperature in fermentor tank is 25 ~ 30 DEG C, sealing and fermenting 1 ~ 3 day, then improve leavening temperature to 40 ~ 50 DEG C, ferment 5 ~ 7 days, control fermentation condition for ventilation, lucifuge;
(3) after fermentation completes, the cellulase of 5 ~ 7% is added in fermented product, control temperature is 30 ~ 35 DEG C, and hydrolysis 2 ~ 3h, after being hydrolyzed, continue to be warming up to 90 ~ 95 DEG C of ferment treatment 10 ~ 15min that go out, go out after enzyme, add 30 ~ 50g flyash, control rotating speed is 500 ~ 700r/min, magnetic agitation mixes, and drops in extrusion machine and is squeezed into pie;
(4) cake of above-mentioned gained is put into charring furnace, controlling temperature in charring furnace is 500 ~ 600 DEG C, charing 1 ~ 2h, after carbonizing, puts into pulverizer and pulverizes 50 ~ 60min, sieve to obtain 50 ~ 60 object particles, put into reaction vessel, adding nitric acid and 20 ~ 25g SPC-D that 30 ~ 35mL massfraction is 70% respectively, is 28 ~ 30 DEG C in temperature, rotating speed is under 300 ~ 500r/min, stirs 20 ~ 30min;
(5) after above-mentioned stirring completes, tan by the sun 1 ~ 2 day under putting into sunlight, ted once every 5h, after having tedded, put into runner milling and mill, sieve to obtain 80 ~ 90 object particles, the drier 30 ~ 40min of the vacuum drier putting into 50 ~ 60 DEG C;
(6) wastewater from chemical industry is introduced in purification tank for liquid waste, after wide-meshed screen, fine screen mesh filter, above-mentioned dried particle is sprinkled in wastewater disposal basin, the amount of being sprinkled into is 5 ~ 7mg/L, stir 1 ~ 2h, to be mixedly to complete, controlling dissolved oxygen in wastewater disposal basin is 0.1 ~ 0.3mg/L, passes into air and carry out Air Exposure 1 ~ 2h bottom wastewater disposal basin;
(7) after above-mentioned aeration completes, in wastewater disposal basin, add active sludge, add-on and wastewater from chemical industry are admittedly than being 1:48, controlling dissolved oxygen in wastewater disposal basin is 1.2 ~ 1.5mg/L, bottom wastewater disposal basin, pass into air carry out Air Exposure 1 ~ 2h, then leave standstill 2 ~ 3h, water outlet.
The present invention is compared with additive method, and Advantageous Effects is:
(1) the present invention effectively can process wastewater from chemical industry, and simple to operate, working time is short;
(2) investment cost is low, and treatment effect is good, and clearance more than 8%, BOD clearance higher than additive method reaches more than 95%.
Embodiment
First get 1 ~ 2kg ivy and 1 ~ 2kg Folium Sansevieriae Trifasclatae, put into sodium chloride solution immersion 30 ~ 40min that massfraction is 30 ~ 35% respectively, then rinse 2 ~ 3 times with current, after natural air drying, use kitchen knife chopped, put into juice extractor respectively and squeeze the juice; Then after having squeezed the juice, ivy slurries after squeezing the juice and Folium Sansevieriae Trifasclatae slurries are put into fermentor tank, get bottom of river channel blackout mud adds wherein simultaneously, add-on is 1:2 with total slurries ratio, then respectively to wherein adding the yeast of 3 ~ 5% and the water of 1 ~ 3%, controlling temperature in fermentor tank is 25 ~ 30 DEG C, sealing and fermenting 1 ~ 3 day, then improve leavening temperature to 40 ~ 50 DEG C, ferment 5 ~ 7 days, control fermentation condition for ventilation, lucifuge; After fermentation completes, the cellulase of 5 ~ 7% is added in fermented product, control temperature is 30 ~ 35 DEG C, and hydrolysis 2 ~ 3h, after being hydrolyzed, continue to be warming up to 90 ~ 95 DEG C of ferment treatment 10 ~ 15min that go out, go out after enzyme, add 30 ~ 50g flyash, control rotating speed is 500 ~ 700r/min, magnetic agitation mixes, and drops in extrusion machine and is squeezed into pie; The cake of above-mentioned gained is put into charring furnace, controlling temperature in charring furnace is 500 ~ 600 DEG C, charing 1 ~ 2h, after carbonizing, puts into pulverizer and pulverizes 50 ~ 60min, sieve to obtain 50 ~ 60 object particles, put into reaction vessel, adding nitric acid and 20 ~ 25g SPC-D that 30 ~ 35mL massfraction is 70% respectively, is 28 ~ 30 DEG C in temperature, rotating speed is under 300 ~ 500r/min, stirs 20 ~ 30min; After above-mentioned stirring completes, tan by the sun 1 ~ 2 day under putting into sunlight, ted once every 5h, after having tedded, put into runner milling and mill, sieve to obtain 80 ~ 90 object particles, the drier 30 ~ 40min of the vacuum drier putting into 50 ~ 60 DEG C; Wastewater from chemical industry is introduced in purification tank for liquid waste, after wide-meshed screen, fine screen mesh filter, above-mentioned dried particle is sprinkled in wastewater disposal basin, the amount of being sprinkled into is 5 ~ 7mg/L, stir 1 ~ 2h, to be mixedly to complete, controlling dissolved oxygen in wastewater disposal basin is 0.1 ~ 0.3mg/L, passes into air and carry out Air Exposure 1 ~ 2h bottom wastewater disposal basin; Finally after above-mentioned aeration completes, in wastewater disposal basin, add active sludge, add-on and wastewater from chemical industry are admittedly than being 1:48, controlling dissolved oxygen in wastewater disposal basin is 1.2 ~ 1.5mg/L, bottom wastewater disposal basin, pass into air carry out Air Exposure 1 ~ 2h, then leave standstill 2 ~ 3h, water outlet.
Example 1
First get 1kg ivy and 1kg Folium Sansevieriae Trifasclatae, put into respectively massfraction be 30% sodium chloride solution soak 30min, then rinse 2 times, after natural air drying with current, use kitchen knife chopped, put into juice extractor respectively and squeeze the juice; Then after having squeezed the juice, ivy slurries after squeezing the juice and Folium Sansevieriae Trifasclatae slurries are put into fermentor tank, get bottom of river channel blackout mud adds wherein simultaneously, add-on is 1:2 with total slurries ratio, then respectively to wherein adding the yeast of 3% and the water of 1%, controlling temperature in fermentor tank is 25 DEG C, sealing and fermenting 1 day, then improve leavening temperature to 40 DEG C, ferment 5 days, control fermentation condition for ventilation, lucifuge; After fermentation completes, the cellulase of 5% is added in fermented product, control temperature is 30 DEG C, and hydrolysis 2h, after being hydrolyzed, continue to be warming up to 90 DEG C of ferment treatment 10min that go out, go out after enzyme, add 30g flyash, control rotating speed is 500r/min, magnetic agitation mixes, and drops in extrusion machine and is squeezed into pie; The cake of above-mentioned gained is put into charring furnace, controlling temperature in charring furnace is 500 DEG C, charing 1h, after carbonizing, puts into pulverizer and pulverizes 50min, sieve to obtain 50 object particles, put into reaction vessel, adding nitric acid and 20g SPC-D that 30mL massfraction is 70% respectively, is 28 DEG C in temperature, rotating speed is under 300r/min, stirs 20min; After above-mentioned stirring completes, tan by the sun 1 day under putting into sunlight, ted once every 5h, after having tedded, put into runner milling and mill, sieve to obtain 80 object particles, the drier 30min of the vacuum drier putting into 50 DEG C; Wastewater from chemical industry is introduced in purification tank for liquid waste, after wide-meshed screen, fine screen mesh filter, above-mentioned dried particle is sprinkled in wastewater disposal basin, the amount of being sprinkled into is 5mg/L, stirs 1h, to be mixedly complete, controlling dissolved oxygen in wastewater disposal basin is 0.1mg/L, passes into air and carry out Air Exposure 1h bottom wastewater disposal basin; Finally after above-mentioned aeration completes, in wastewater disposal basin, add active sludge, add-on and wastewater from chemical industry are admittedly than being 1:48, and controlling dissolved oxygen in wastewater disposal basin is 1.2mg/L, passes into air and carry out Air Exposure 1h bottom wastewater disposal basin, then leaves standstill 2h, water outlet.The present invention effectively can process wastewater from chemical industry, simple to operate, and working time is short; Investment cost is low, and treatment effect is good, and clearance 8%, BOD clearance higher than additive method reaches 95%.
Example 2
First get 1.5kg ivy and 1.5kg Folium Sansevieriae Trifasclatae, put into respectively massfraction be 33% sodium chloride solution soak 35min, then rinse 2 times, after natural air drying with current, use kitchen knife chopped, put into juice extractor respectively and squeeze the juice; Then after having squeezed the juice, ivy slurries after squeezing the juice and Folium Sansevieriae Trifasclatae slurries are put into fermentor tank, get bottom of river channel blackout mud adds wherein simultaneously, add-on is 1:2 with total slurries ratio, then respectively to wherein adding the yeast of 4% and the water of 2%, controlling temperature in fermentor tank is 28 DEG C, sealing and fermenting 2 days, then improve leavening temperature to 45 DEG C, ferment 6 days, control fermentation condition for ventilation, lucifuge; After fermentation completes, the cellulase of 6% is added in fermented product, control temperature is 33 DEG C, and hydrolysis 2.5h, after being hydrolyzed, continue to be warming up to 93 DEG C of ferment treatment 13min that go out, go out after enzyme, add 40g flyash, control rotating speed is 600r/min, magnetic agitation mixes, and drops in extrusion machine and is squeezed into pie; The cake of above-mentioned gained is put into charring furnace, controlling temperature in charring furnace is 550 DEG C, charing 1.5h, after carbonizing, puts into pulverizer and pulverizes 55min, sieve to obtain 55 object particles, put into reaction vessel, adding nitric acid and 23g SPC-D that 33mL massfraction is 70% respectively, is 29 DEG C in temperature, rotating speed is under 400r/min, stirs 25min; After above-mentioned stirring completes, tan by the sun 2 days under putting into sunlight, ted once every 5h, after having tedded, put into runner milling and mill, sieve to obtain 85 object particles, the drier 35min of the vacuum drier putting into 55 DEG C; Wastewater from chemical industry is introduced in purification tank for liquid waste, after wide-meshed screen, fine screen mesh filter, above-mentioned dried particle is sprinkled in wastewater disposal basin, the amount of being sprinkled into is 6mg/L, stir 1.5h, to be mixedly to complete, controlling dissolved oxygen in wastewater disposal basin is 0.2mg/L, passes into air and carry out Air Exposure 1.5h bottom wastewater disposal basin; Finally after above-mentioned aeration completes, in wastewater disposal basin, add active sludge, add-on and wastewater from chemical industry are admittedly than being 1:48, and controlling dissolved oxygen in wastewater disposal basin is 1.35mg/L, passes into air and carry out Air Exposure 1.5h bottom wastewater disposal basin, then leaves standstill 2.5h, water outlet.The present invention effectively can process wastewater from chemical industry, simple to operate, and working time is short; Investment cost is low, and treatment effect is good, and clearance 8.4%, BOD clearance higher than additive method reaches 95.6%.
Example 3
First get 2kg ivy and 2kg Folium Sansevieriae Trifasclatae, put into respectively massfraction be 35% sodium chloride solution soak 40min, then rinse 3 times, after natural air drying with current, use kitchen knife chopped, put into juice extractor respectively and squeeze the juice; Then after having squeezed the juice, ivy slurries after squeezing the juice and Folium Sansevieriae Trifasclatae slurries are put into fermentor tank, get bottom of river channel blackout mud adds wherein simultaneously, add-on is 1:2 with total slurries ratio, then respectively to wherein adding the yeast of 5% and the water of 3%, controlling temperature in fermentor tank is 30 DEG C, sealing and fermenting 3 days, then improve leavening temperature to 50 DEG C, ferment 7 days, control fermentation condition for ventilation, lucifuge; After fermentation completes, the cellulase of 7% is added in fermented product, control temperature is 35 DEG C, and hydrolysis 3h, after being hydrolyzed, continue to be warming up to 95 DEG C of ferment treatment 15min that go out, go out after enzyme, add 50g flyash, control rotating speed is 700r/min, magnetic agitation mixes, and drops in extrusion machine and is squeezed into pie; The cake of above-mentioned gained is put into charring furnace, controlling temperature in charring furnace is 600 DEG C, charing 2h, after carbonizing, puts into pulverizer and pulverizes 60min, sieve to obtain 60 object particles, put into reaction vessel, adding nitric acid and 25g SPC-D that 35mL massfraction is 70% respectively, is 30 DEG C in temperature, rotating speed is under 500r/min, stirs 30min; After above-mentioned stirring completes, tan by the sun 2 days under putting into sunlight, ted once every 5h, after having tedded, put into runner milling and mill, sieve to obtain 90 object particles, the drier 40min of the vacuum drier putting into 60 DEG C; Wastewater from chemical industry is introduced in purification tank for liquid waste, after wide-meshed screen, fine screen mesh filter, above-mentioned dried particle is sprinkled in wastewater disposal basin, the amount of being sprinkled into is 7mg/L, stirs 2h, to be mixedly complete, controlling dissolved oxygen in wastewater disposal basin is 0.3mg/L, passes into air and carry out Air Exposure 2h bottom wastewater disposal basin; Finally after above-mentioned aeration completes, in wastewater disposal basin, add active sludge, add-on and wastewater from chemical industry are admittedly than being 1:48, and controlling dissolved oxygen in wastewater disposal basin is 1.5mg/L, passes into air and carry out Air Exposure 2h bottom wastewater disposal basin, then leaves standstill 3h, water outlet.The present invention effectively can process wastewater from chemical industry, simple to operate, and working time is short; Investment cost is low, and treatment effect is good, and clearance 8.9%, BOD clearance higher than additive method reaches 96.1%.
Claims (1)
1. a treatment process for wastewater from chemical industry, is characterized in that concrete treatment process is:
(1) get 1 ~ 2kg ivy and 1 ~ 2kg Folium Sansevieriae Trifasclatae, put into sodium chloride solution immersion 30 ~ 40min that massfraction is 30 ~ 35% respectively, then rinse 2 ~ 3 times with current, after natural air drying, use kitchen knife chopped, put into juice extractor respectively and squeeze the juice;
(2) after having squeezed the juice, ivy slurries after squeezing the juice and Folium Sansevieriae Trifasclatae slurries are put into fermentor tank, get bottom of river channel blackout mud adds wherein simultaneously, add-on is 1:2 with total slurries ratio, then respectively to wherein adding the yeast of 3 ~ 5% and the water of 1 ~ 3%, controlling temperature in fermentor tank is 25 ~ 30 DEG C, sealing and fermenting 1 ~ 3 day, then improve leavening temperature to 40 ~ 50 DEG C, ferment 5 ~ 7 days, control fermentation condition for ventilation, lucifuge;
(3) after fermentation completes, the cellulase of 5 ~ 7% is added in fermented product, control temperature is 30 ~ 35 DEG C, and hydrolysis 2 ~ 3h, after being hydrolyzed, continue to be warming up to 90 ~ 95 DEG C of ferment treatment 10 ~ 15min that go out, go out after enzyme, add 30 ~ 50g flyash, control rotating speed is 500 ~ 700r/min, magnetic agitation mixes, and drops in extrusion machine and is squeezed into pie;
(4) cake of above-mentioned gained is put into charring furnace, controlling temperature in charring furnace is 500 ~ 600 DEG C, charing 1 ~ 2h, after carbonizing, puts into pulverizer and pulverizes 50 ~ 60min, sieve to obtain 50 ~ 60 object particles, put into reaction vessel, adding nitric acid and 20 ~ 25g SPC-D that 30 ~ 35mL massfraction is 70% respectively, is 28 ~ 30 DEG C in temperature, rotating speed is under 300 ~ 500r/min, stirs 20 ~ 30min;
(5) after above-mentioned stirring completes, tan by the sun 1 ~ 2 day under putting into sunlight, ted once every 5h, after having tedded, put into runner milling and mill, sieve to obtain 80 ~ 90 object particles, the drier 30 ~ 40min of the vacuum drier putting into 50 ~ 60 DEG C;
(6) wastewater from chemical industry is introduced in purification tank for liquid waste, after wide-meshed screen, fine screen mesh filter, above-mentioned dried particle is sprinkled in wastewater disposal basin, the amount of being sprinkled into is 5 ~ 7mg/L, stir 1 ~ 2h, to be mixedly to complete, controlling dissolved oxygen in wastewater disposal basin is 0.1 ~ 0.3mg/L, passes into air and carry out Air Exposure 1 ~ 2h bottom wastewater disposal basin;
(7) after above-mentioned aeration completes, in wastewater disposal basin, add active sludge, add-on and wastewater from chemical industry are admittedly than being 1:48, controlling dissolved oxygen in wastewater disposal basin is 1.2 ~ 1.5mg/L, bottom wastewater disposal basin, pass into air carry out Air Exposure 1 ~ 2h, then leave standstill 2 ~ 3h, water outlet.
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| CN201510923001.8A CN105481091A (en) | 2015-12-12 | 2015-12-12 | Method for treating chemical wastewater |
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| CN201510923001.8A CN105481091A (en) | 2015-12-12 | 2015-12-12 | Method for treating chemical wastewater |
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| CN106830111A (en) * | 2017-01-11 | 2017-06-13 | 刘成才 | A kind of water purification material and preparation method thereof |
| CN110182948A (en) * | 2019-05-18 | 2019-08-30 | 生态环境部华南环境科学研究所 | Biological method for treating waste water based on activated sludge fermentation material |
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| US20100213122A1 (en) * | 2007-04-12 | 2010-08-26 | Novozymes Biologicals, Inc. | Waste Water Treatment |
| CN101456644A (en) * | 2007-12-11 | 2009-06-17 | 中国京冶工程技术有限公司 | Method for processing organic industrial effluent by catalytic reduction bio-ferric technique |
| CN102701433A (en) * | 2012-05-31 | 2012-10-03 | 中国环境科学研究院 | Biological filter deodorization filler and preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106830111A (en) * | 2017-01-11 | 2017-06-13 | 刘成才 | A kind of water purification material and preparation method thereof |
| CN110182948A (en) * | 2019-05-18 | 2019-08-30 | 生态环境部华南环境科学研究所 | Biological method for treating waste water based on activated sludge fermentation material |
| CN110182948B (en) * | 2019-05-18 | 2022-05-17 | 生态环境部华南环境科学研究所 | Biological sewage treatment method based on activated sludge fermentation product |
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Application publication date: 20160413 |