CN105110463A - Combined treatment method of high-concentration industrial wastewater - Google Patents
Combined treatment method of high-concentration industrial wastewater Download PDFInfo
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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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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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Abstract
The invention provides a combined treatment method of high-concentration industrial wastewater. The method can maximally maintain the high-activity sludge, has the advantages of high biodegradation efficiency and higher biodegradability, and achieves the goal of simultaneously decomposing organic matters and sludge. The method can implement synchronous treatment on malodorous gas and wastewater and sufficiently degrade pollutants in the malodorous gas; and the suspended filler greatly enhances the treatment load and the degradability for pollutants. The staggered micro-expansive biological filler bed can thoroughly discharge the waste on the bottom of the filler bed box and ensure no foreign matters to block the pipeline of the equipment in the operation process. The method has the advantages of simple technological conditions, small occupied area and low operation energy consumption. By adopting the higher automation level, the method is convenient for management, has high adaptability, and reduces the environmental pollution.
Description
Technical field
The present invention relates to a kind of combination treatment method of high-concentration industrial-water, belong to the treatment of Organic Wastewater field of high density.
Background technology
Present stage, in high concentration hard-degraded organic waste water, technical field of sewage, because high concentration hard-degraded organic waste water has the characteristics such as Pollutant levels are high, complicated component, toxicity are large, salt is high, wastewater biodegradability difference difficulty is decomposed by the microorganisms effect.Therefore conventional method of wastewater treatment is adopted to be difficult to purify the technology and economic requirement that maybe cannot meet this kind of purification of waste water process.Along with the development of modern environment-friendly sewage treatment technology; the improvement of high concentrated organic wastewater is a Current Domestic external environment resist technology field difficult problem urgently to be resolved hurrily; how effectively, economically to solve high concentration hard-degraded organic waste water, become the problem that current field of environment engineering is the most urgent, need most solution.Anaerobic Microbiological Treatment Technology is one of important technology in treatment of Organic Wastewater.
Foul gas refers to that all stimulate olfactory organ to cause the gaseous matter of people's unhappiness and damage living environment.Industrial production, municipal wastewater, sludge treatment and disposal of garbage facility etc. are the main sources of foul gas.Foul gas mainly results from blowdown pumping plant, trash rack, Loss-on-drying gas sedimentation basin, preliminary sedimentation tank in sewage treatment process, sludge condensation in sludge handling process, dehydration and drying, transhipment, compost treatment in garbage processing procedure, landfill, burning, transhipment, and chemical pharmacy, rubber plastic, paint, printing and dyeing leather, livestock cultivation and fermentation pharmacy etc. produce source.Repugnant substance is of a great variety, wide material sources, and all can cause murder by poisoning in various degree to human body respiration, digestion, cardiovascular, internal secretion and neural system, wherein aromatics such as benzene, toluene, vinylbenzene etc. can also make human body produce distortion, canceration.Therefore foul gas process belongs to an importance of environment pollution control, and in recent years, the investigation of polluting foul gas along with country is more and more stricter, and more and more higher to the requirement of foul gas discharge, biological deodorizing is widely used on environment-friendly engineering.But its treatment process remains in some problem and shortage in actual moving process, and effect is not satisfactory.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned defect, provides a kind of combination treatment method of high-concentration industrial-water.This method solve the key issues such as high-concentration industrial-water anaerobic biological treatment weak effect, fluctuation of service, association foul gas process difficulty, make waste-gas cleaning rate reach more than 95%.
The technical scheme that the present invention solves the employing of its technical problem is as follows: a kind of combination treatment method of high-concentration industrial-water, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, and guarantee sewage fully contacts with mud;
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and add pipeline by steam and throw that acid/alkali pipeline adds that steam and mode that is sour, alkali medicament make that its water outlet meets, anaerobic reactor is for the requirement of inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow in hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit;
6) by step 5) in the waste water of discharging and the foul gas supervened evenly enter reactor successively by water distributor, reactor is divided into first part and second section, air enters first part from the inlet pipe of reactor bottom, reactor is entered with the microbubble form that diameter is about 100 μm by micro-hole aerator, controlling air aeration amount makes dissolved oxygen concentration in reactor be 3 ~ 5mg/L, and air and water rise jointly; Waste water, foul gas and air jointly rise in the first part of reactor; Suspended active biologic packing material in first part is loose formula filling, and random motion is carried out under current and gas shock, promote that the organic pollutant in foul gas, waste water and the oxygen in air fully contact with the microbial film on filler, organic pollutant is degraded by microorganisms; The venting port of first part connects the inlet mouth of second section by pipeline, the filler of second section is that suspension type installs soft-filler, denitrification microorganism, desulfurization microorganism, trace element and catalyzer biofilm formation growth on filler; Waste water after process flows out after arriving reactor top from annular overflow weir, imports rising pipe, annular overflow weir is equipped with guard, prevents floating stuffing from flowing out with water; Gas is overflowed from water, discharges from reactor head escape pipe;
7) come from step 6) waste water and gas enter staggered floor microdilatancy biologic packing material bed, PLC opens according to the wash water valve that the programmable interval set time set in advance controls staggered floor microdilatancy biologic packing material bed, the control valve that PLC control is simultaneously installed between recoil tube and source of the gas is opened, air-flow is impacted on swash plate with the waste that liquid is discharged by the hole that the tube wall of recoil tube is evenly offered, when liquid level sensor detects that bed of packings bottom half liquid level reaches 0mm, PLC control of sewage disposal valve and control valve are closed, and complete blowdown operation.
Preferably, the cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
In above-mentioned either a program preferably, step 1) in 1/4th, 1/2nd and 3/4ths places of total height in acidification reaction indoor a whipping appts is respectively installed, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5 ~ 6h, idle 2h, then continues operation 3 ~ 4h again, so repeatedly, to ensure fully contacting of sewage and mud.
In above-mentioned either a program preferably, step 6) in first part top install spray header, nozzle adopts tangential nozzle, above spray header, scum dredger is installed, and spray liquid circulation reflux device, waste liquid recovery apparatus and rinse water arrangement are set, be provided with air distribution plate bottom packing layer, under meter and pressure warning unit are set.
In above-mentioned either a program preferably, step 6) in the top of second section spray header is installed, nozzle adopts tangential nozzle, air distribution plate is provided with bottom packing layer, adopt and hang mud biofilm method, use desulfurization deodorizing microorganism and denitrogenation deodorizing microorganism, under meter and pressure warning unit are set in second section.
In above-mentioned either a program preferably, step 7) in the angle that tilts of swash plate be 30 ~ 60 degree, waste by the dual function of gravity and gas shock to sewage draining exit quick travel, together with liquid through blowdown connection and wash water valve eliminating.
Beneficial effect of the present invention:
1. the present invention makes to obtain good mixed effect in reactor by the mode that internal recycle stirs, improve mass-transfer efficiency, by controlling the control of reactor stirring velocity and inner active sludge laminar flow regime, sewage is made to present speed change up-flow state at loose floating activated sludge layer; Can retain high reactivity mud to greatest extent, biological degradation efficiency is high, enhances biodegradability, reaches the object of decomposing organic matter and mud simultaneously;
2. method of the present invention can realize foul gas, waste water synchronous processing, realizes the abundant degraded of pollutent in foul gas, can avoid producing the problems such as pressure drop, biomass accumulation, filler blocking simultaneously; Floating stuffing greatly improves processing load and the degradation property to pollutent;
3. method of the present invention is for B/C than the waste water being greater than 0.2, has good degradation capability and capacity of resisting impact load;
4. staggered floor microdilatancy biologic packing material bed of the present invention can be thoroughly clean by the waste discharge of bed of packings bottom half, and ensure equipment no-sundries blocking pipe in operational process, economical operation is convenient, does not increase any expense.
5. processing condition of the present invention are relatively simple, and take up an area little, operation energy consumption is low, adopts higher automatization level, convenient management, strong adaptability, decreases the pollution to environment.
Embodiment
Below in conjunction with specific embodiment, the present invention is described further.
A combination treatment method for high-concentration industrial-water, comprises the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, and guarantee sewage fully contacts with mud;
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and add pipeline by steam and throw that acid/alkali pipeline adds that steam and mode that is sour, alkali medicament make that its water outlet meets, anaerobic reactor is for the requirement of inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow in hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit;
6) by step 5) in the waste water of discharging and the foul gas supervened evenly enter reactor successively by water distributor, reactor is divided into first part and second section, air enters first part from the inlet pipe of reactor bottom, reactor is entered with the microbubble form that diameter is about 100 μm by micro-hole aerator, controlling air aeration amount makes dissolved oxygen concentration in reactor be 3 ~ 5mg/L, and air and water rise jointly; Waste water, foul gas and air jointly rise in the first part of reactor; Suspended active biologic packing material in first part is loose formula filling, and random motion is carried out under current and gas shock, promote that the organic pollutant in foul gas, waste water and the oxygen in air fully contact with the microbial film on filler, organic pollutant is degraded by microorganisms; The venting port of first part connects the inlet mouth of second section by pipeline, the filler of second section is that suspension type installs soft-filler, denitrification microorganism, desulfurization microorganism, trace element and catalyzer biofilm formation growth on filler; Waste water after process flows out after arriving reactor top from annular overflow weir, imports rising pipe, annular overflow weir is equipped with guard, prevents floating stuffing from flowing out with water; Gas is overflowed from water, discharges from reactor head escape pipe;
7) come from step 6) waste water and gas enter staggered floor microdilatancy biologic packing material bed, PLC opens according to the wash water valve that the programmable interval set time set in advance controls staggered floor microdilatancy biologic packing material bed, the control valve that PLC control is simultaneously installed between recoil tube and source of the gas is opened, air-flow is impacted on swash plate with the waste that liquid is discharged by the hole that the tube wall of recoil tube is evenly offered, when liquid level sensor detects that bed of packings bottom half liquid level reaches 0mm, PLC control of sewage disposal valve and control valve are closed, and complete blowdown operation.
The cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
Step 1) in 1/4th, 1/2nd and 3/4ths places of total height in acidification reaction indoor a whipping appts is respectively installed, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5 ~ 6h, idle 2h, then continue operation 3 ~ 4h again, so repeatedly, to ensure fully contacting of sewage and mud.
Step 6) in first part top install spray header, nozzle adopts tangential nozzle, above spray header, install scum dredger, and arranges spray liquid circulation reflux device, waste liquid recovery apparatus and rinse water arrangement, be provided with air distribution plate bottom packing layer, under meter and pressure warning unit are set.
Step 6) in the top of second section spray header is installed, nozzle adopts tangential nozzle, is provided with air distribution plate bottom packing layer, adopts and hangs mud biofilm method, uses desulfurization deodorizing microorganism and denitrogenation deodorizing microorganism, arranges under meter and pressure warning unit in second section.
Step 7) in the angle that tilts of swash plate be 30 ~ 60 degree, waste by the dual function of gravity and gas shock to sewage draining exit quick travel, together with liquid through blowdown connection and wash water valve eliminating.
Step 1) in the first liquid distributor be made up of each three water shoots of upper and lower two-layer equidistant arrangement; Two water shoots that second liquid distributor is equidistantly arranged by individual layer form.
Step 1) in acidification reaction room hydraulic detention time control at 1.8 ~ 2.5h, pH value controls 5.2 ~ 5.6, and water temperature controls at 31 ~ 33 DEG C, and volumetric loading controls at 3.0 ~ 3.5kgCOD/ (m
3d).
In step 2) acidification reaction room in, complicated organism is under the effect of anerobe extracellular enzyme, first simple organism is broken down into, then these simple organism become based on acetic acid with oxidation conversion through anaerobically fermenting under the effect of acid-producing bacteria, be auxiliary voltaile fatty acid (VFA) and alcohols with propionic acid, butyric acid etc., participate in hydrolysed ferment bacterium mainly anerobe and the facultative anaerobe in this stage; Then, hydrogen-producing acetogens changes into acetic acid, H the intermediate product that the first stage except acetic acid, formic acid, methyl alcohol produces
2and CO
2.
Step 2) in described organism be simple carbohydrate, amino acid, lipid acid and glycerine; Described intermediate product is propionic acid, butyric acid and alcohols.
In step 3) main reaction region in water temperature be strict controlled in 33 ~ 34 DEG C; PH value controls 7.1 ~ 7.3; Its control of reflux ratio is 800% ~ 850%; Up-flow speed control is built in 10.5 ~ 11.5m/h on the surface; Volumetric loading controls at 22 ~ 24kgCOD/ (m
3d).
In step 4) second reaction zone in water temperature control at 30 ~ 32 DEG C; PH value controls 7.0 ~ 7.2; Its control of reflux ratio is 410% ~ 460%; Up-flow speed control is built in 6.5 ~ 6.8m/h on the surface; Volumetric loading controls at 4.5 ~ 5.5kgCOD (m
3d);
Step 5) in sludge settling district, following current floor and swash plate are set, and utilize automatically controlled mud valve regularly quantitatively the most of mud in sludge settling district to be entered mud gathering barrel.
Step 6) in catalyzer prepare by following steps:
A. be the consumption that 5:3:2 calculates six water cerous nitrates, five water zirconium nitrates and titanium tetrachloride by the mass percent of cerium oxide, zirconium white and titanium dioxide;
B. under stirring, chemical pure titanium tetrachloride liquid dissolves in pure water by 1:6 by volume, wherein water temperature is not higher than 10 DEG C, and with mass concentration be the strong aqua regulator solution pH of 25% for 7 ~ 8, gained gelatinous precipitate washs after filtration to remove after chlorion and is metatitanic acid colloid;
C. under stirring, chemical pure titanium tetrachloride liquid dissolves in pure water by 1:9 by volume, and wherein water temperature is not higher than 10 DEG C, adds chemical pure six water cerous nitrate and chemical pure five water zirconium nitrate subsequently by the metering ratio of step a; And with the strong aqua regulator solution pH of mass concentration 25% for 7 ~ 8, gained gelatinous precipitate is cerium zirconium titanium composite oxides presoma after washing after filtration and removing chlorion;
D. the charge capacity of manganic oxide and ferric oxide is that radix calculates by composite oxides total amount in step c gained cerium zirconium titanium composite oxides presoma, the mass percent charge capacity of manganic oxide and ferric oxide is respectively 4% and 12% of composite oxides amount, the manganese nitrate solution consumption of the iron nitrate pure with this calculational chemistry and mass concentration 50%; Manganous nitrate and iron nitrate are dissolved in mass concentration be 10% chemical pure tartrate or citric acid pure water solution in, tartrate or citric acid pure water solution consumption are dissolving iron nitrate; Mixing solutions after dissolving mixes under high velocity agitation with step c gained cerium zirconium titanium composite oxides presoma; Mixture is dry at air atmosphere 90 ~ 100 DEG C subsequently, and roasting 3 hours at air atmosphere 620 ~ 650 DEG C, obtain the Mn of high dispersive
2o
3-Fe
2o
3/ CeO
2-ZrO
2-TiO
2catalyzer;
E. be that 1:5 takes HZSM-5 molecular sieve by the volume ratio of molecular sieve and Co ion exchange liquid, Si/Al mol ratio=25 or 38, catalyst grade, is immersed in the Co (NO of mass concentration 15%
3)
3in pure water solution, 80 DEG C of stirred in water bath are after 24 hours, and filtration washing is extremely without cobalt ion; On molecular sieve, Co charge capacity should reach mass percent is 3%, and repeatedly exchange to reach charge capacity, the mensuration of charge capacity is with inductively coupled plasma fluorescence spectrophotometer or atomic absorption spectrometry; ZSM-5 molecular sieve after cobalt ion exchanges is dry under 120 DEG C of air atmospheres, roasting 3-4 hour under 500 DEG C of air atmospheres, obtained Co-ZSM-5 catalyzer;
F. by steps d gained Mn
2o
3-Fe
2o
3/ CeO
2-ZrO
2-TiO
2catalyzer and step e gained Co-ZSM-5 catalyzer in mass ratio 1:1 ratio mix, and obtain catalyst mixture; Take catalyst mixture as the hydrogen silicate solution that the mass percent of radix adds the step b gained metatitanic acid colloid of 40%, the mass concentration of 30% is 33.5%; Add subsequently hydroxypropylcellulose that catalyst mixture is the mass percent 1% of radix, 6% chemical pure thanomin, the chemical pure glycerine of 4%, the glass fibre of 5% and 1% chemical pure pore-forming material aluminum stearate; Mix and be extruded into trifolium or cellular after being kneaded into mud; At 60 DEG C in air atmosphere dry 12 hours, then roasting 2 hours at 500 DEG C, obtained required catalyzer.
The present invention establishes the microorganism fast filming technology adapting to different waste gas feature, is provided with 2 ~ 3 kinds of new modified fillers, cultivates and has 2 ~ 3 kinds of function yeast, obtain 3 ~ 4 kinds of nutrient solution prescriptions, achieve standardization fast filming, film formation time 7 ~ 10 days, waste-gas cleaning rate more than 95%.
Method of the present invention is for different sorts or several representative malodor gas, statistical method is adopted to optimize staggered floor microdilatancy biologic packing material bed critical process controling parameters, comprise reactor aspect ratio, filler packing ratio, nutrient solution concentration and flow etc., determine the response relation between each module such as each key control parameter and distribution device, the nutritive medium recycle system, filler, housing and decontamination effect improving three, realize the standard specifications modularized production of staggered floor microdilatancy biologic packing material bed, specification is divided into 1000m according to treatment capacity
3/ d, 3000m
3/ d, 5000m
3/ d, 10000m
3/ d etc., module comprises distribution device, the nutritive medium recycle system, filler, housing etc.
For high saliferous, organic waste water containing hazardous and noxious substances, based on the complicacy of pollutent microbial decontamination processes, pass through industrial applications, optimize reactor key control parameter and comprise stirring velocity, flow velocity, organic loading, hydraulic load etc., and then improvement reactor configuration, the mass-transfer efficiency of enhanced reactor, solves the problems such as reactor load skewness weighing apparatus, basis of the present invention is set up Intelligent assembly production technology.The scale of foundation is not less than 5000t/d (waste water) and 6000m
3the demonstration project of/h (foul gas), influent COD is 15000 ~ 25000mg/L, and water outlet COD is 200 ~ 300mg/L, and odorant pollutant (as ammonia, hydrogen sulfide etc.) inlet concentration is 300 ~ 400mg/m
3, clearance more than 95%, realizes stably reaching standard discharge.
The present invention makes to obtain good mixed effect in reactor by the mode that internal recycle stirs, improve mass-transfer efficiency, by controlling the control of reactor stirring velocity and inner active sludge laminar flow regime, sewage is made to present speed change up-flow state at loose floating activated sludge layer; Can retain high reactivity mud to greatest extent, biological degradation efficiency is high, enhances biodegradability, reaches the object of decomposing organic matter and mud simultaneously.Method of the present invention can realize foul gas, waste water synchronous processing, realizes the abundant degraded of pollutent in foul gas, can avoid producing the problems such as pressure drop, biomass accumulation, filler blocking simultaneously; Floating stuffing greatly improves processing load and the degradation property to pollutent.Method of the present invention than the waste water being greater than 0.2, has good degradation capability and capacity of resisting impact load for B/C.Staggered floor microdilatancy biologic packing material bed of the present invention can be thoroughly clean by the waste discharge of bed of packings bottom half, and ensure equipment no-sundries blocking pipe in operational process, economical operation is convenient, does not increase any expense.In addition, processing condition of the present invention are relatively simple, and take up an area little, operation energy consumption is low, adopts higher automatization level, convenient management, strong adaptability, decreases the pollution to environment.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention, every according in technical spirit of the present invention to any simple modification, equivalent variations that above embodiment is done, all fall within protection scope of the present invention.
Claims (6)
1. a combination treatment method for high-concentration industrial-water, is characterized in that comprising the following steps:
1) a part of waste water enters in conical shell by intake pump from bottom first liquid distributor of two-phase internal-circulation anaerobic reactor, another part is upwards entered in conical shell from bottom vertical through bottom liquid inlet arm by the second liquid distributor, two portions waste water spiral up-flow under the effect of lifter enters the acidification reaction room of anaerobic reactor, and guarantee sewage fully contacts with mud;
2) the acidified substrate water outlet formed after the degraded of acidification reaction room mixes in retort mutually with the phegma of the buffered soln in anaerobic reactor, and add pipeline by steam and throw that acid/alkali pipeline adds that steam and mode that is sour, alkali medicament make that its water outlet meets, anaerobic reactor is for the requirement of inflow temperature and pH value;
3) under retort water outlet promotes the effect of water pump two one-levels, after cyclone-flow water distribution uniform water distribution, enter the main reaction region of anaerobic reactor, in main reaction region, sewage fully contacts with anaerobic grain sludge, the methanogen be gathered on anaerobic grain sludge utilize biological metabolism decompose and transformation step 2) in generation acidified substrate be converted into methane thus the organic contamination in water removed from aqueous phase; Sewage, mud rise along height for reactor direction eddy flow in hydraulic action, after part of contaminated water and mud rise to reactor top, get back in retort along reflux pipeline; Another part sewage and mud continue to rise, and arrive the one-level triphase separator be arranged at above reflux pipeline, realize sewage, mud, being separated of biogas under the water suction effect of gas skirt impact effect with mud receiving tank; Sewage continues to rise, and is pooled to the effluent weir being arranged in one-level triphase separator top and discharges main reaction region; Biogas is entered in follow-up methane recovery device by filter pore and processes further after being collected by the gas skirt in one-level triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
4) water outlet of main reaction region is under the effect of two two-stage hoisting water pumps, enters second reaction zone by after cyclone-flow water distribution uniform water distribution; In second reaction zone, sewage contacts fully with anaerobic grain sludge, and the organic pollution materials in water, by anaerobion metabolic breakdown, is finally separated from aqueous phase with the form of biogas; Sewage, mud rise along height for reactor direction eddy flow under hydraulic action, after part of contaminated water and mud rise to reactor top, get back in the suction line of two-stage hoisting water pump along reflux pipeline; Another part sewage and mud continue to rise, and realize the separation of sewage, mud, biogas under the effect being arranged at the secondary triphase separator above reflux pipeline; Sewage continues to rise, and is pooled to the effluent weir being arranged in secondary triphase separator top and discharges second reaction zone; Biogas enters in follow-up methane recovery device and processes further after being collected by the gas skirt in secondary triphase separator; Mud falls the main reaction region to reactor bottom after rise by action of gravity, continues to play biological degradation;
5) water outlet of second reaction zone enters water shoot by after the rectification of zig-zag overflow weir, and a part enters liquid distributor by return line, again enters acidification reaction room, and another part is discharged by anaerobic reactor top and entered next processing unit;
6) by step 5) in the waste water of discharging and the foul gas supervened evenly enter reactor successively by water distributor, reactor is divided into first part and second section, air enters first part from the inlet pipe of reactor bottom, reactor is entered with the microbubble form that diameter is about 100 μm by micro-hole aerator, controlling air aeration amount makes dissolved oxygen concentration in reactor be 3 ~ 5mg/L, and air and water rise jointly; Waste water, foul gas and air jointly rise in the first part of reactor; Suspended active biologic packing material in first part is loose formula filling, and random motion is carried out under current and gas shock, promote that the organic pollutant in foul gas, waste water and the oxygen in air fully contact with the microbial film on filler, organic pollutant is degraded by microorganisms; The venting port of first part connects the inlet mouth of second section by pipeline, the filler of second section is that suspension type installs soft-filler, denitrification microorganism, desulfurization microorganism, trace element and catalyzer biofilm formation growth on filler; Waste water after process flows out after arriving reactor top from annular overflow weir, imports rising pipe, annular overflow weir is equipped with guard, prevents floating stuffing from flowing out with water; Gas is overflowed from water, discharges from reactor head escape pipe;
7) come from step 6) waste water and gas enter staggered floor microdilatancy biologic packing material bed, PLC opens according to the wash water valve that the programmable interval set time set in advance controls staggered floor microdilatancy biologic packing material bed, the control valve that PLC control is simultaneously installed between recoil tube and source of the gas is opened, air-flow is impacted on swash plate with the waste that liquid is discharged by the hole that the tube wall of recoil tube is evenly offered, when liquid level sensor detects that bed of packings bottom half liquid level reaches 0mm, PLC control of sewage disposal valve and control valve are closed, and complete blowdown operation.
2. the combination treatment method of high-concentration industrial-water according to claim 1, it is characterized in that, the cylindrical shell of the two-phase internal-circulation anaerobic reactor used in the method is that the steel cut by polylith are welded to each other and form, then within it outside surface carries out rotproofing, then each accessory in two-phase internal-circulation anaerobic reactor is assembled, assemble and rear service check and debugging have been carried out to this two-phase internal-circulation anaerobic reactor, finally come into operation.
3. the combination treatment method of high-concentration industrial-water according to claim 1 and 2, it is characterized in that, step 1) in 1/4th, 1/2nd and 3/4ths places of total height in acidification reaction indoor a whipping appts is respectively installed, three whipping appts orthogonal settings between any two, three whipping appts alternate runs, after separate unit whipping appts runs 5 ~ 6h, idle 2h, then continue operation 3 ~ 4h again, so repeatedly, to ensure fully contacting of sewage and mud.
4. the combination treatment method of high-concentration industrial-water according to claim 3, it is characterized in that, step 6) in first part top install spray header, nozzle adopts tangential nozzle, above spray header, scum dredger is installed, and spray liquid circulation reflux device, waste liquid recovery apparatus and rinse water arrangement are set, be provided with air distribution plate bottom packing layer, under meter and pressure warning unit are set.
5. the combination treatment method of high-concentration industrial-water according to claim 4, it is characterized in that, step 6) in second section top install spray header, nozzle adopts tangential nozzle, air distribution plate is provided with bottom packing layer, adopt and hang mud biofilm method, use desulfurization deodorizing microorganism and denitrogenation deodorizing microorganism, under meter and pressure warning unit are set in second section.
6. the combination treatment method of the high-concentration industrial-water according to claim 4 or 5, it is characterized in that, step 7) in swash plate tilt angle be 30 ~ 60 degree, waste is subject to the dual function of gravity and gas shock to sewage draining exit quick travel, together gets rid of through blowdown connection and wash water valve with liquid.
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