CN203487013U - Highly toxic coking phenol cyanogen waste water treatment and recycling system - Google Patents
Highly toxic coking phenol cyanogen waste water treatment and recycling system Download PDFInfo
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- CN203487013U CN203487013U CN201320588715.4U CN201320588715U CN203487013U CN 203487013 U CN203487013 U CN 203487013U CN 201320588715 U CN201320588715 U CN 201320588715U CN 203487013 U CN203487013 U CN 203487013U
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Abstract
The utility model belongs to the technical field of iron and steel metallurgy coking phenol cyanogen waste water treatment, and particularly provides a highly toxic coking phenol cyanogen waste water treatment and recycling system. The highly toxic coking phenol cyanogen waste water treatment and recycling system mainly comprises five processes, namely pretreatment, biological decarbonizing and denitrification, efficient precipitation, Fenton advanced oxidation and sludge dewatering, aims to treat coking phenol cyanogen waste water, coke oven gas water seal water as well as mixed gas water seal water, and particularly solves the problem of highly toxic coking phenol cyanogen waste water (sulfur content is about 400 mg/L and total nitrogen content is about 700 mg/L) treatment and recycling. By adopting the highly toxic coking phenol cyanogen waste water treatment and recycling system, dilution water does not need to be added, so the running cost is low, energy conservation and emission reduction are realized, the management is convenient, the treatment effect is good, and the removal efficiency is stable.
Description
Technical field
The utility model belongs to the technical field that ferrous metallurgy coking wastewater containing phenol and cyanide is processed, and particularly provides a kind of high toxicity coking wastewater containing phenol and cyanide to process reclaiming system.
Background technology
In existing technology, to high toxicity (COD≤3800mg/L, ammonia nitrogen≤300mg/L) coking wastewater containing phenol and cyanide is processed and is existed and need to throw continuously the above dilution water that doubles at equalizing tank, microorganism active is easily suppressed, hydraulic detention time is long, COD, the unstable series of problems that waits of ammonia nitrogen removal effect, do not reach and process object (chemical oxygen demand (COD) (COD) >100mg/L that water carries out safe reuse, ammonia nitrogen >20mg/L, harmful health of human body), and add dilution water and medication amount large, processing cost is high, cost is generally at 30-50 unit/m
3, move uneconomical.
Summary of the invention
The purpose of this utility model is to provide for the defect of above-mentioned existence a kind of high toxicity coking wastewater containing phenol and cyanide to process reclaiming system, (sulfur-bearing is in 400mg/L left and right particularly to have solved current coking phenol cyanogen high toxicity, total nitrogen 700mg/L left and right) problem of wastewater treatment and renovation, do not need to add dilution water running cost low, energy-saving and emission-reduction, convenient management, and treatment effect is good, and removal effect is stable.
The technical solution of the utility model is:
High toxicity coking wastewater containing phenol and cyanide is processed a reclaiming system, and waste pipe connects equalizing tank, water quality is set all in equalizing tank and device, and equalizing tank outlet connects TJZQ air supporting Reaction Separation device; Described TJZQ air supporting Reaction Separation device divides reaction zone, zone of action, disengaging zone, clear water zone and body refuse district, in disengaging zone, bucket is set, this TJZQ air supporting Reaction Separation device outlet connects AHCR anaerobic hydrolysis reactor, and this TJZQ air supporting Reaction Separation device connects chemicals dosing plant; In AHCR anaerobic hydrolysis reactor, hang serial laminated piece extension type honeycomb-shaped microorganism carrier is installed, this AHCR anaerobic hydrolysis reactor outlet connects DNCR denitrification reactor, and this AHCR anaerobic hydrolysis reactor connects nutritive salt throwing device; This DNCR denitrification reactor outlet connects one-level OHCR aerobic reactor, the outlet of one-level OHCR aerobic reactor connects secondary OHCR aerobic reactor, the outlet of secondary OHCR aerobic reactor connects second pond, one-level OHCR aerobic reactor, secondary OHCR aerobic reactor all connect centrifugal blower, secondary OHCR aerobic reactor also connects DNCR denitrification reactor, and secondary OHCR aerobic reactor also connects alkali lye throwing device; The outlet of second pond bed mud is connected to DNCR denitrification reactor by sludge reflux pump, second pond outlet connects efficient settler, in efficient settler, reaction zone, zone of action, disengaging zone, clear water zone and body refuse district are set respectively, in disengaging zone, bucket is set, this efficient settler outlet connects intermediate pool, and this efficient settler connects chemicals dosing plant; Intermediate pool outlet connects efficient oxidation reactor by two-stage hoisting pump, and this efficient oxidation reactor outlet connects biooxidation reactions device, and this efficient oxidation reactor also connects composite oxidant throwing device; The outlet of biooxidation reactions device connects full-automatic filter, and the outlet of full-automatic filter connects reuse pool; The slag-drip opening of TJZQ air supporting Reaction Separation device, second pond, efficient settler, efficient oxidation reactor connects respectively sludge sump, and sludge sump connects sludge concentration and dewatering all-in-one, and sludge concentration and dewatering all-in-one connects sludge conditioner throwing device.
Described waste pipe comprises coking wastewater containing phenol and cyanide pipeline and water seal for coal gas waterpipe, and wherein coking wastewater containing phenol and cyanide pipeline directly connects equalizing tank; Water seal for coal gas waterpipe need to first connect water seal water storage pool and then by water seal water lift pump, be connected to oil eliminator, then connects equalizing tank.
Described coking wastewater containing phenol and cyanide install pipeline one branch road connects accident pool, and this accident pool connects equalizing tank.
In AHCR anaerobic hydrolysis reactor, anaerobism mixing reactor is installed, is carried out mechanically mixing stirring; AHCR anaerobic hydrolysis reactor head is provided with reinforced concrete insulation cover; Anoxic mixing reactor is installed in DNCR denitrification reactor, is carried out mechanically mixing stirring.
Between described TJZQ air supporting Reaction Separation device slag-drip opening and sludge sump, body refuse pond is set, for storing scum silica frost and body refuse.
One-level OHCR aerobic reactor, secondary OHCR aerobic reactor top arrange froth breaking water pipe, prevent foam diffusion.
Second pond adopts radical sedimentation basin.
Equalizing tank, AHCR anaerobic hydrolysis reactor, DNCR denitrification reactor and OHCR aerobic reactor are provided with reinforced concrete lid, and (containing piecemeal activity cover plate) is incubated.
High toxicity coking wastewater containing phenol and cyanide is processed a reuse method, and waste water pump is delivered to equalizing tank, carries out mechanically mixing and stirs balanced water quality, then pumped to TJZQ air supporting Reaction Separation device by one-level lift pump, at TJZQ air supporting Reaction Separation device, remove oil pollutant and the suspended impurity in waste water, reduce COD value of waste water, described TJZQ air supporting Reaction Separation device divides reaction zone, zone of action, disengaging zone, clear water zone and body refuse district, dosing coagulant and coagulant aids in reaction zone, in disengaging zone, scum silica frost and body refuse all flow automatically and enter body refuse district, and clear water flows automatically and enters clear water zone, and water outlet is from flowing into AHCR anaerobic hydrolysis reactor, waste water is the organism of small organic molecule and easy degraded by the organic substance decomposing of larger molecular organics and difficult degradation through AHCR anaerobic hydrolysis reactor, improve the BOD5/COD value of factory effluent simultaneously, in AHCR anaerobic hydrolysis reactor, hang serial laminated piece extension type honeycomb-shaped microorganism carrier is installed, AHCR anaerobic hydrolysis reactor is incubated, and water outlet gravity flow enters DNCR denitrification reactor, in DNCR denitrification reactor, the nitrate, the Nitrite transformation that secondary OHCR aerobic reactor mixed-liquor return are brought by denitrifying bacteria are nitrogen, to remove total nitrogen, and supplement half basicity, make waste water reach neutral, water outlet gravity flow enters one-level OHCR aerobic reactor, in one-level OHCR aerobic reactor, front end adopts multiple spot water distribution, rear end adopts pulling flow type aeration, this one-level OHCR aerobic reactor connects secondary OHCR aerobic reactor, in one-level OHCR aerobic reactor, by bacteria metabolism, the organic carbon compound in waste water is fully degraded, and then nitrifier is nitrate nitrogen and nitrite nitrogen by the mineralized nitrogen in waste water in secondary OHCR aerobic reactor, in secondary OHCR reactor, need automatic feeding alkali lye, one-level OHCR aerobic reactor, secondary OHCR aerobic reactor all adopts micro-hole aerator and centrifugal blower to carry out oxygen supply, mixed-liquor return to DNCR denitrification reactor carries out anti-nitration reaction, secondary OHCR aerobic reactor water outlet gravity flow enters second pond, carries out mud-water separation, and second pond adopts radical sedimentation basin, and second pond bed mud is back to DNCR denitrification reactor by sludge reflux pump, second pond water outlet gravity flows into efficient settler, in efficient settler, reaction zone, zone of action, disengaging zone, clear water zone and body refuse district are set respectively, in reaction zone, through dosing pump automatic feeding coagulating agent, and mechanical stirring is set, in disengaging zone, scum silica frost and body refuse all flow automatically and enter body refuse district, and clear water flows automatically and enters intermediate pool, intermediate pool water outlet is pumped to efficient oxidation reactor by two-stage hoisting pump, in the consecutive mode of gas, carries out contact mass transfer, and COD in waste water is converted into BOD5, and to water body oxygenation, this efficient oxidation reactor water outlet is from flowing into biooxidation reactions device, the water outlet of biooxidation reactions device is from flowing into full-automatic filter, and the water outlet of full-automatic filter enters reuse pool, the body refuse that TJZQ air supporting Reaction Separation device, second pond, efficient settler, efficient oxidation reactor are discharged drains into respectively sludge sump and concentrates, mud, is pumped to sludge concentration and dewatering all-in-one and is carried out sludge dewatering by sewage sludge feed pump at sludge sump after machinery is concentrated, adds sludge conditioner to strengthen dewatering efficiency simultaneously, and the dry mud after dehydration can be delivered to coal blending, carries out coke oven burning.
Described waste water comprises coking wastewater containing phenol and cyanide and gas liquor water shutoff, and wherein coking wastewater containing phenol and cyanide directly enters equalizing tank; Then gas liquor water shutoff need to deliver to oil eliminator by water seal water lift pump by water seal water storage pool, preliminary delivers to equalizing tank after fuel-displaced.
According to influent quality, dosing kind and chemical feeding quantity that can flexible reaction zone.
When unusual fluctuations appear in waste water quality, switch to accident pool, then by accident pool lift pump, be slowly pumped to equalizing tank.
In TJZQ air supporting Reaction Separation device, mechanical stirring is set; In reaction zone, through dosing pump automatic feeding coagulating agent and coagulant aids; In disengaging zone, bucket is set, the body refuse gravity flow depositing in bucket enters body refuse district.
In AHCR anaerobic hydrolysis reactor, anaerobism mixing reactor is installed, is carried out mechanically mixing stirring; Anoxic mixing reactor is installed in DNCR denitrification reactor, is carried out mechanically mixing stirring.
One-level OHCR aerobic reactor, secondary OHCR aerobic reactor top arrange froth breaking water pipe, prevent foam diffusion.
Equalizing tank, AHCR anaerobic hydrolysis reactor, DNCR denitrification reactor and OHCR aerobic reactor are provided with reinforced concrete lid, and (containing piecemeal activity cover plate) is incubated.
The beneficial effects of the utility model are, are analyzed as follows one by one:
1. operational path is advanced, ripe, reliable, does not need to add dilution water running cost low, convenient management.
2. taken into full account water quality and quantity fluctuation, made every effort to security of system and stablize.
3. according to the principle of " safe reliable, to make every effort to advanced ", technology maturation is reliable, operational management is convenient, flexible, running cost economy, can guarantee the long-time safety and steady operation of waste disposal plant.
4. for the oil concentration of composite waste, adopt TJZQ air supporting Reaction Separation device, guarantee the efficient removal of oil in waste water, alleviate biological treatment load, guarantee the treatment effect of follow-up biological respinse facility.
5. consider the variation of water quality and quantity, the balanced water quality and quantity of equalizing tank is set before air supporting, can guarantee to react the even dosing of air supporting, effectively reduce chemical feeding quantity, and guarantee that air supporting is stable, efficiently operation.Consider that the flco alumen ustum generating after dosing is more simultaneously, in air supporting Reaction Separation device disengaging zone, bucket is set, can discharge in time deposition, guarantee air flotation effect.
6. for the feature of the high COD of coking wastewater containing phenol and cyanide, high ammonia nitrogen, native system biological treatment adopts enhanced biological nitrogen removal technique, and the biodegradation method of " AHCR anaerobic hydrolysis reactor+DNCR denitrification reactor+OHCR aerobic reactor " is removed organic pollutant and ammonia nitrogen.
7. for the high about 3800mg/L of former water COD concentration, the water quality situation that poisonous, refractory organic content is high, AHCR anaerobic hydrolysis reactor is set: by AHCR anaerobic hydrolysis reactor is set: (1) improves the biodegradability of sewage, reduce toxicity, the phenolic compounds such as cresols, phenol, xylenol and heterogeneous ring compound have obtained transforming and degraded; (2) can partly remove organism, reduce the load of follow-up aerobic treatment; (3) reduce the required power of fan of follow-up aerobic treatment, save energy consumption; (4) can reduce system spare sludge quantity.
8. in AHCR anaerobic hydrolysis reactor, hang laminated piece extension type honeycomb-shaped microorganism carrier is installed, specific surface area is 100 times more than of common bio-carrier specific surface area, for anerobe provides the carrier adhering to, with set anaerobion, effectively prevent anerobe loss, improve the concentration of anaerobic sludge.For waste water is fully contacted with anaerobion, reach good mass transfer effect, anaerobism mixing reactor is installed in pond, carry out mechanically mixing stirring, guarantee good anaerobic hydrolysis reaction effect, improved the ability that anti-water quality and quantity impacts.
9. the preposition anoxic denitrification reactor of DNCR is set: (1) is realized anti-nitration reaction and removed total nitrogen; (2) can supplement approximately half basicity and, to follow-up biological nitration reactor, reduce medicine consumption; (3) degradation of organic substances; (4) the organic degraded of anoxic section can reduce follow-up aerobic section COD load, oxygen-supplying amount and oxygen supply energy consumption; (5) Prepositive denitrification reaction does not need additional carbon; (6) can suppress hyphomycetic growth, effectively control sludge bulking.
10. AHCR anaerobic hydrolysis reactor, DNCR denitrification reactor adopt mixing reactor, impel the water in whole pond to form the systemic circulation of stirring up and down, realizing the three-dimensional circulation of big area stirs, make in pond mud all the time in stirring and suspended state, touch opportunity and the contact surface of waste water and living microorganism have been increased, eliminate stirring dead angle, reached even, gentle object of stirring, guaranteed good anaerobism and anaerobic treatment effect.
11. add a little by flexible selection basicity, artificially aerobic reactor are divided into decarbonization section and nitrated section.(1) some has the organism of drawing up to be first decomposed to nitrated, protects follow-up nitrated; (2) make nitrated section of BOD5<20mg/L, avoid heterotrophic bacteria and poky nitrifier contention dissolved oxygen that growth velocity is high.
12. set up efficient settler after second pond, to strengthen mud-water separation effect, reduce the content of tiny suspended impurity in water outlet etc., further reduce COD and other Pollutant levels, guarantee water outlet qualified discharge.
13. consider that coked waste water Pollutant levels are high, water quality complicated and hazardous and noxious substances many.Before OHCR aerobic reactor, gallery adopts the stage aeration pattern of multipoint water feeding, after gallery in order to guarantee effluent quality, be typical plug-flow aeration tank.During actual motion, can by absorption regeneration method, conventional method, terrace work, move by the control of inlet valve, aerating apparatus valve, also can realize combined running, system flexibility is greatly improved.
14. rationally utilize existing area, reduce step by step and process load, improve to greatest extent treatment effect simultaneously.As after second pond water outlet, be designed with efficient settler as advanced treatment unit, anaerobic hydrolysis reactor sludge reflux system etc. is set.From now on, along with improving constantly of environmental requirement, can whole system be upgraded by simple technological operation measure.
15. measures to effectively increase energy savings and reduce material consumption are many:
(1) effectively reduce energy consumption and chemical feeding quantity: in technique, be designed with AHCR anaerobic hydrolysis reactor and DNCR denitrification reactor, can effectively reduce load, oxygen requirement and the energy consumption of follow-up aerobic reactor, can also reduce the alkali number that adds of aerobic nitrification.
(2) fully take into account winter temperature low, in order to guarantee the biological treatment effect of winter during lesser temps, design adds reinforced concrete lid (containing piecemeal activity cover plate) at equalizing tank, AHCR anaerobic hydrolysis reactor, DNCR denitrification reactor and OHCR aerobic reactor and is incubated.
(3) select the micropore aeration pipe that oxygen transfer rate is high, improve oxygen utilization rate, reduce gas blower energy consumption.
(4) in elevation arrangement, reduce drop height, select economic pipe size reasonable Arrangement elevation, reduce head loss, with energy efficient as far as possible.
(5) centrifugation design sludge treatment efficiency is high.
16. equalizing tanks do not add dilution water, and the waste water recycling after processing, in blast furnace slag flushing, greening etc., can be realized zero release.In design, take into full account safety, the energy, environmental issue, the best that reaches social benefit, environmental benefit and economic benefit after engineering construction is completed is unified, meets strategy of sustainable development requirement.
Application the utility model; the water quality that coking wastewater containing phenol and cyanide is processed can reach < < Iron And Steel Industry pollution discharge standard > > primary standard; water after processing is all recycled; to protection surrounding environment; improve operating environment and created favourable condition; having good environmental benefit and social benefit, is the good scheme that high toxicity coking wastewater containing phenol and cyanide is processed.
Effluent quality situation after processing refers to table 1, reached the primary standard in < < Iron And Steel Industry pollution discharge standard > > (GB13456-92), the waste water fully recovering after processing.
Table 1 effluent quality
Note: the water quality indices after processing by Shandong Academy of Environmental Science's environment measuring center in the result of on May 29th, 2013, May field monitoring mean value on the 30th.
Accompanying drawing explanation
Fig. 1 is that traditional coking wastewater containing phenol and cyanide is processed A/O process flow sheet.
Fig. 2 is that the utility model high toxicity coking wastewater containing phenol and cyanide is processed reuse method process flow sheet.
Fig. 3 is that high toxicity coking wastewater containing phenol and cyanide of the present utility model is processed reclaiming system device connection diagram.
Wherein, 1 is waste pipe, 2 is equalizing tank, 3 is TJZQ air supporting Reaction Separation device, 4 is AHCR anaerobic hydrolysis reactor, 5 is DNCR denitrification reactor, 6 is nutritive salt throwing device, 7 is one-level OHCR aerobic reactor, 8 is secondary OHCR aerobic reactor, 9 is second pond, 10 is centrifugal blower, 11 is alkali lye throwing device, 12 is efficient settler, 13 is intermediate pool, 14 is chemicals dosing plant, 15 is efficient oxidation reactor, 16 is two-stage hoisting pump, 17 is biological oxidation reactor, 18 is composite oxidant throwing device, 19 is full-automatic filter, 20 is reuse pool, 21 is sludge sump, 22 is sludge concentration and dewatering all-in-one, 23 is sludge conditioner throwing device, 24 is sludge reflux pump, 25 is water seal for coal gas waterpipe, 26 is accident pool, 27 is oil eliminator, 28 is water seal water lift pump, 29 is body refuse pond.
Embodiment
Below by specific embodiment, the technical solution of the utility model is described in detail.
For this high toxicity coking wastewater containing phenol and cyanide, process reclaiming system, waste pipe 1 connects equalizing tank 2, water quality is set all in equalizing tank and device, and equalizing tank outlet connects TJZQ air supporting Reaction Separation device 3; Described TJZQ air supporting Reaction Separation device divides reaction zone, zone of action, disengaging zone, clear water zone and body refuse district, in disengaging zone, bucket is set, this TJZQ air supporting Reaction Separation device outlet connects AHCR anaerobic hydrolysis reactor 4, and this TJZQ air supporting Reaction Separation device connects chemicals dosing plant 14; In AHCR anaerobic hydrolysis reactor, hang serial laminated piece extension type honeycomb-shaped microorganism carrier is installed, this AHCR anaerobic hydrolysis reactor outlet connects DNCR denitrification reactor 5, and this AHCR anaerobic hydrolysis reactor connects nutritive salt throwing device 6; This DNCR denitrification reactor outlet connects one-level OHCR aerobic reactor 7, the outlet of one-level OHCR aerobic reactor connects secondary OHCR aerobic reactor 8, the outlet of secondary OHCR aerobic reactor connects second pond 9, one-level OHCR aerobic reactor, secondary OHCR aerobic reactor all connect centrifugal blower 10, secondary OHCR aerobic reactor also connects DNCR denitrification reactor, and secondary OHCR aerobic reactor also connects alkali lye throwing device 11; The outlet of second pond bed mud is connected to DNCR denitrification reactor by sludge reflux pump, second pond outlet connects efficient settler 12, in efficient settler, reaction zone, zone of action, disengaging zone, clear water zone and body refuse district are set respectively, in disengaging zone, bucket is set, this efficient settler outlet connects intermediate pool 13, and this efficient settler connects chemicals dosing plant 14; Intermediate pool outlet connects efficient oxidation reactor 15 by two-stage hoisting pump, and this efficient oxidation reactor outlet connects biooxidation reactions device 17, and this efficient oxidation reactor also connects composite oxidant throwing device 18; The outlet of biooxidation reactions device connects full-automatic filter 19, and the outlet of full-automatic filter connects reuse pool 20; The slag-drip opening of TJZQ air supporting Reaction Separation device, second pond, efficient settler, efficient oxidation reactor connects respectively sludge sump 21, and sludge sump connects sludge concentration and dewatering all-in-one 22, and sludge concentration and dewatering all-in-one connects sludge conditioner throwing device 23.
Described waste pipe comprises coking wastewater containing phenol and cyanide pipeline 1 and water seal for coal gas waterpipe 25, and wherein coking wastewater containing phenol and cyanide pipeline directly connects equalizing tank; Water seal for coal gas waterpipe need to first connect water seal water storage pool and then by water seal water lift pump 28, be connected to oil eliminator 27, then connects equalizing tank.
Described coking wastewater containing phenol and cyanide install pipeline one branch road connects accident pool, and this accident pool connects equalizing tank.
In AHCR anaerobic hydrolysis reactor, anaerobism mixing reactor is installed, is carried out mechanically mixing stirring; AHCR anaerobic hydrolysis reactor head is provided with reinforced concrete insulation cover; Anoxic mixing reactor is installed in DNCR denitrification reactor, is carried out mechanically mixing stirring.
Between described TJZQ air supporting Reaction Separation device slag-drip opening and sludge sump, body refuse pond 29 is set, for storing scum silica frost and body refuse.
One-level OHCR aerobic reactor, secondary OHCR aerobic reactor top arrange froth breaking water pipe, prevent foam diffusion.
Second pond adopts radical sedimentation basin.
Equalizing tank, AHCR anaerobic hydrolysis reactor, DNCR denitrification reactor and OHCR aerobic reactor are provided with reinforced concrete lid, and (containing piecemeal activity cover plate) is incubated.
High toxicity coking wastewater containing phenol and cyanide is processed reuse method, and process description is as follows:
Coking chemical waste water is pumped directly to equalizing tank under normal circumstances, switches to accident pool when unusual fluctuations appear in water quality, then by accident pool lift pump, is slowly pumped to equalizing tank.Water quality is set all and device in equalizing tank, carries out mechanically mixing stirring, so that balanced water quality better, the water outlet of factory effluent equalizing tank is pumped to TJZQ air supporting Reaction Separation device by factory effluent one-level lift pump again.
In TJZQ air supporting Reaction Separation device, reaction zone, zone of action, disengaging zone, clear water zone and body refuse district are set respectively.In reaction zone, through dosing pump automatic feeding coagulating agent and coagulant aids, and mechanical stirring is set, make the tiny suspended particle in waste water flocculate into larger flco with oils.According to influent quality, dosing kind and chemical feeding quantity that can flexible reaction zone.In zone of action, the flco generating in reaction zone fully contacts, adsorbs with the tiny bubble in dissolved air water.In disengaging zone, absorption has the flco floating upward quickly of tiny bubble to the water surface, forms scum silica frost, and the flco of larger specific gravity is precipitated in bucket, and scum silica frost and body refuse all flow automatically and enter body refuse district.Clear water flows automatically and enters clear water zone.Water outlet is from flowing into AHCR anaerobic hydrolysis reactor.
Waste water is the organism of small molecules and easy degraded through AHCR anaerobic hydrolysis reactor by the organic substance decomposing of larger molecular organics and part difficult degradation, greatly improves the speed of follow-up OHCR aerobic reaction.For preventing anerobe loss, improve the concentration of anaerobic sludge, in pond, hang serial laminated piece extension type honeycomb-shaped microorganism carrier is installed, with set anaerobion.For waste water is fully contacted with anaerobion, reach good mass transfer effect, anaerobism mixing reactor is installed in pond, carry out mechanically mixing stirring.Water outlet gravity flow enters DNCR denitrification reactor.
In DNCR denitrification reactor, nitrate mixed-liquor return being brought by denitrifying bacteria, Nitrite transformation are nitrogen, to remove total nitrogen.In order to make mud, water two-phase fully contact, react, reach good mass transfer effect, anoxic mixing reactor is installed in DNCR denitrification reactor, carry out mechanically mixing stirring.DNCR denitrification reactor water outlet gravity flow enters one-level OHCR aerobic reactor.
In one-level OHCR aerobic reactor, for fear of occurring that aeration tank origin or beginning oxygen supply speed is less than the situation of oxygen consumption rate all the time, consider the measure of multiple spot water distribution.In reactor, by bacteria metabolism, the organic carbon compound in waste water is fully degraded, and then nitrifier is nitrate nitrogen and nitrite nitrogen by the mineralized nitrogen in waste water in secondary OHCR aerobic reactor.In secondary OHCR reactor, need automatic feeding alkali lye, with additional nitration, react required basicity.I and II OHCR aerobic reactor adopts micro-hole aerator and centrifugal blower to carry out oxygen supply.Secondary OHCR aerobic reactor water outlet gravity flow enters second pond and carries out mud-water separation.Consider that in addition mixed-liquor return to DNCR denitrification reactor carries out anti-nitration reaction.
Second pond water outlet gravity flows into efficient settler.In efficient settler, reaction zone, zone of action, disengaging zone, clear water zone and body refuse district are set respectively, in reaction zone, through dosing pump automatic feeding coagulating agent, and mechanical stirring is set, make the tiny suspended particle in waste water flocculate into larger flco with oils.According to influent quality, dosing kind and chemical feeding quantity that can flexible reaction zone.In zone of action, the flco generating in reaction zone fully contacts, adsorbs with the tiny bubble in dissolved air water.In disengaging zone, absorption has the flco floating upward quickly of tiny bubble to the water surface, forms scum silica frost, and the flco of larger specific gravity is precipitated in bucket, and scum silica frost and body refuse all flow automatically and enter body refuse district, and clear water flows automatically and enters intermediate pool.
Intermediate pool water outlet, is pumped to efficient oxidation reactor by two-stage hoisting pump, in the consecutive mode of gas, carries out contact mass transfer, to guarantee higher ozone absorption rate.By the strong oxidation of ozone, part biological hardly degraded organic substance remaining in waste water is carried out to oxygenolysis, COD is converted into BOD5, and can, to water body oxygenation, for follow-up bio-contact oxidation, processes and create conditions; Iron, manganese in oxidable waste water of while is also removed colourity.The water outlet of ozone contact reaction device is from flowing into biooxidation reactions device, and in reactor, microorganism be take organism as nutriment existence and breeding, to reach the object of further reduction water outlet COD.
Biological contact oxidation reactor water outlet is from flowing into full-automatic filter, with a small amount of aging microbial film coming off of filtering etc., guarantees effluent quality.The water outlet of full-automatic filter enters reuse pool.
The body refuse that TJZQ air supporting Reaction Separation device, second pond, efficient settler, efficient oxidation reactor are discharged drains into respectively sludge sump and concentrates.
Mud, is pumped to sludge concentration and dewatering all-in-one and is carried out sludge dewatering by sewage sludge feed pump at sludge thickener after machinery is concentrated, adds sludge conditioner to strengthen dewatering efficiency simultaneously, and the dry mud after dehydration can be delivered to coke oven and burn.
Effluent quality situation after processing refers to table 1, reached the primary standard in < < Iron And Steel Industry pollution discharge standard > > (GB13456-92), the waste water fully recovering after processing.
Table 1 effluent quality
Note: the water quality indices after processing by Shandong Academy of Environmental Science's environment measuring center in the result of on May 29th, 2013, May field monitoring mean value on the 30th.
Claims (8)
1. high toxicity coking wastewater containing phenol and cyanide is processed a reclaiming system, and waste pipe connects equalizing tank, water quality is set all in equalizing tank and device, and equalizing tank outlet connects TJZQ air supporting Reaction Separation device; Described TJZQ air supporting Reaction Separation device divides reaction zone, zone of action, disengaging zone, clear water zone and body refuse district, in disengaging zone, bucket is set, this TJZQ air supporting Reaction Separation device outlet connects AHCR anaerobic hydrolysis reactor, and this TJZQ air supporting Reaction Separation device connects chemicals dosing plant; In AHCR anaerobic hydrolysis reactor, hang serial laminated piece extension type honeycomb-shaped microorganism carrier is installed, this AHCR anaerobic hydrolysis reactor outlet connects DNCR denitrification reactor, and this AHCR anaerobic hydrolysis reactor connects nutritive salt throwing device; This DNCR denitrification reactor outlet connects one-level OHCR aerobic reactor, the outlet of one-level OHCR aerobic reactor connects secondary OHCR aerobic reactor, the outlet of secondary OHCR aerobic reactor connects second pond, one-level OHCR aerobic reactor, secondary OHCR aerobic reactor all connect centrifugal blower, secondary OHCR aerobic reactor also connects DNCR denitrification reactor, and secondary OHCR aerobic reactor also connects alkali lye throwing device; The outlet of second pond bed mud is connected to DNCR denitrification reactor by sludge reflux pump, second pond outlet connects efficient settler, in efficient settler, reaction zone, zone of action, disengaging zone, clear water zone and body refuse district are set respectively, in disengaging zone, bucket is set, this efficient settler outlet connects intermediate pool, and this efficient settler connects chemicals dosing plant; Intermediate pool outlet connects efficient oxidation reactor by two-stage hoisting pump, and this efficient oxidation reactor outlet connects biooxidation reactions device, and this efficient oxidation reactor also connects composite oxidant throwing device; The outlet of biooxidation reactions device connects full-automatic filter, and the outlet of full-automatic filter connects reuse pool; The slag-drip opening of TJZQ air supporting Reaction Separation device, second pond, efficient settler, efficient oxidation reactor connects respectively sludge sump, and sludge sump connects sludge concentration and dewatering all-in-one, and sludge concentration and dewatering all-in-one connects sludge conditioner throwing device.
2. wastewater treatment and renovation system according to claim 1, is characterized in that, described waste pipe comprises coking wastewater containing phenol and cyanide pipeline and water seal for coal gas waterpipe, and wherein coking wastewater containing phenol and cyanide pipeline directly connects equalizing tank; Water seal for coal gas waterpipe need to first connect water seal water storage pool and then by water seal water lift pump, be connected to oil eliminator, then connects equalizing tank.
3. wastewater treatment and renovation system according to claim 1, is characterized in that, equalizing tank, AHCR anaerobic hydrolysis reactor, DNCR denitrification reactor and OHCR aerobic reactor are provided with reinforced concrete lid.
4. wastewater treatment and renovation system according to claim 1, is characterized in that, in AHCR anaerobic hydrolysis reactor, anaerobism mixing reactor is installed, and carries out mechanically mixing stirring; AHCR anaerobic hydrolysis reactor head is provided with reinforced concrete insulation cover; Anoxic mixing reactor is installed in DNCR denitrification reactor, is carried out mechanically mixing stirring.
5. wastewater treatment and renovation system according to claim 1, is characterized in that, between described TJZQ air supporting Reaction Separation device slag-drip opening and sludge sump, body refuse pond is set, for storing scum silica frost and body refuse.
6. wastewater treatment and renovation system according to claim 1, is characterized in that, described coking wastewater containing phenol and cyanide install pipeline one branch road connects accident pool, and this accident pool connects equalizing tank.
7. wastewater treatment and renovation system according to claim 1, is characterized in that, one-level OHCR aerobic reactor, secondary OHCR aerobic reactor top arrange froth breaking water pipe, prevents foam diffusion.
8. wastewater treatment and renovation system according to claim 1, is characterized in that, second pond adopts radical sedimentation basin.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320588715.4U CN203487013U (en) | 2013-09-24 | 2013-09-24 | Highly toxic coking phenol cyanogen waste water treatment and recycling system |
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| CN201320588715.4U CN203487013U (en) | 2013-09-24 | 2013-09-24 | Highly toxic coking phenol cyanogen waste water treatment and recycling system |
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| CN203487013U true CN203487013U (en) | 2014-03-19 |
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| CN (1) | CN203487013U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449684A (en) * | 2013-09-24 | 2013-12-18 | 济钢集团有限公司 | High-toxicity coking phenol-cyanogen waste water recycling system and method |
| CN104803548A (en) * | 2015-04-01 | 2015-07-29 | 浙江碧源环保科技有限公司 | Treating and recycling zero-emission technology and equipment for coking phenol-cyanogen wastewater |
-
2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103449684A (en) * | 2013-09-24 | 2013-12-18 | 济钢集团有限公司 | High-toxicity coking phenol-cyanogen waste water recycling system and method |
| CN104803548A (en) * | 2015-04-01 | 2015-07-29 | 浙江碧源环保科技有限公司 | Treating and recycling zero-emission technology and equipment for coking phenol-cyanogen wastewater |
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