CN106115988A - A kind of method processing waste emulsified mixture - Google Patents
A kind of method processing waste emulsified mixture Download PDFInfo
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- CN106115988A CN106115988A CN201610630869.3A CN201610630869A CN106115988A CN 106115988 A CN106115988 A CN 106115988A CN 201610630869 A CN201610630869 A CN 201610630869A CN 106115988 A CN106115988 A CN 106115988A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
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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
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
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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
Abstract
The invention provides a kind of emulsifying liquid waste water processing system and method, described system includes mixing pond, flocculation basin, sedimentation tank, electricity flocculation reaction groove, electricity flocculation sedimentation tank, cyclic water tank, ultrafiltration system soon.The system and method utilizing the present invention process emulsifying liquid waste water have simple to operate flexibly, be suitable for that water quality is strong, oil emulsion is removed thoroughly, stable and reliable operation, without adding coagulant, membrane module operating flux is high, be difficult to the advantages such as dirty stifled, length in service life.
Description
Technical field
The present invention relates to field of waste water treatment, particularly relate to emulsified liquid waste water treatment method.
Background technology
Metal and alloy material thereof need to use various emulsion, as profit during being processed into various component of machine
Lubrication prescription is used.Emulsion can go bad with a period of time, discharges as waste liquid.This kind of emulsifying liquid waste water is higher containing Organic substance and oil,
More intractable.If do not dealt carefully with, can serious pollution of water environment.
In order to reduce emulsifying liquid waste water processing cost, a lot of enterprises by after emulsifying liquid waste water physical chemistry method pretreatment with its
His waste water carries out mixing and processes with biochemical system.Frequently with pretreating process include following 2 kinds: (1) chemical demulsification-gas
Floating, the method demulsifier consumption is big, processes undesirable to high-concentration emulsified liquid waste water, and air supporting power consumption is bigger；(2) film mistake
Filter method, individually uses membrane filter method to be suitable for processing low concentration emulsifying liquid waste water, there is fluctuation of service, the most dirty stifled, is difficult to clear
The problem such as wash.
Summary of the invention
In order to solve above-mentioned technical problem, the research worker of the present invention, by furtheing investigate work in a large number, investigated one
Kind is stable, simple to operate, new departure that energy consumption is low.
First aspect present invention, it is provided that a kind of system processing emulsifying liquid waste water, described system includes mixing pond, flocculation soon
Pond, sedimentation tank, electricity flocculation reaction groove, electricity flocculation sedimentation tank, cyclic water tank, ultrafiltration system, described fast mixed pond, flocculation basin, precipitation
Pond, electricity flocculation reaction groove, electricity flocculation sedimentation tank, cyclic water tank are equipped with water inlet and outlet, and ultrafiltration system is provided with into water
Mouth, concentrated water spout, the product mouth of a river；Described fast mixed pond outlet is connected with flocculation basin water inlet, and flocculation basin outlet is intake with sedimentation tank
Mouth is connected, and described electricity flocculation reaction groove water inlet is connected with sedimentation tank outlet, and electricity flocculation reaction groove outlet is heavy with electric flocculation
Pond, shallow lake water inlet is connected, and described electricity flocculation sedimentation tank outlet is connected with cyclic water tank water inlet, described cyclic water tank outlet
Being connected with ultrafiltration system intake pump water inlet, described ultrafiltration system concentrated water spout is connected with cyclic water tank water inlet, produce the mouth of a river with after
Continuous biochemical system is connected.
In one or more concrete schemes, described electricity flocculation sedimentation tank is additionally provided with mud discharging mouth, turns from described mud discharging mouth
Removal micro-floccule.
In one or more specific embodiments, described fast mixed pond and flocculation basin are respectively equipped with the first blender and second
Blender；Wherein the first blender rotating speed is 200-300 rev/min；First blender rotating speed is 50-80 rev/min.
A second aspect of the present invention, it is provided that the processing method of a kind of emulsifying liquid waste water, said method comprising the steps of:
(1) coagulating sedimentation: utilizing hydroxide micro-floccule Coagulation and Adsorption to process the emulsifying liquid waste water in fast mixed pond, coagulation is inhaled
Attached process 5～30min；Then with acid or alkali, pH is transferred to 7～9, after preferably 8～9；5～20mg/L are added again in flocculation basin
Polyacrylamide carries out flocculation reaction, and the response time controls 15～30min, forms the thick flco of free settling, then in precipitation
Remove flco after pond is precipitated 2～3 hours, form clear liquid；Described hydroxide micro-floccule produces from step (3) electricity flocculation electrolysis
Raw；Described heavy pool surface load is 0.7～1.2m3/m2·h；
(2) electricity flocculation reaction processes: the clear liquid that step (1) is formed processes through electricity flocculation reaction groove again, electricity flocculation water outlet
Enter in electricity flocculation sedimentation tank；
(3) electricity flocculation sedimentation tank processes: electricity flocculation water outlet precipitates 1～2 hour in electricity flocculation sedimentation tank, forms micro-floccule
And supernatant, the micro-floccule after precipitation is delivered to step (1) and uses as coagulant；The flocculation sedimentation tank surface loading control of described electricity
System is 1～1.5m3/m2·h；
(4) cyclic water tank storage: the supernatant that step (3) is formed is delivered in cyclic water tank；
(5) hyperfiltration advanced breakdown of emulsion filters: the water outlet in cyclic water tank is delivered to ultrafiltration system and carries out filtering and concentrating process；Dense
Emulsion after contracting entrusts third party to process, and leaches after clear liquid enters the process of subsequent biochemical system and directly discharges.
In one or more specific embodiments, described emulsifying liquid waste water is the waste water containing emulsion.
In one or more specific embodiments, described subsequent biochemical system includes anaerobic pond, Aerobic Pond；Through biochemistry
Can directly discharge after process.
In one or more specific embodiments, the micro-floccule that described step (3) produces quantitatively is inputted by screw pump
To step (1).
In one or more specific embodiments, described poly-propionic acid amide. is that PAMA and cation are gathered
Acrylamide.
In one or more specific embodiments, the molecular weight of described polyacrylamide is more than 800w, preferably 800w-
2400w。
In one or more specific embodiments, described electricity flocculation reaction groove includes polylith pole plate, power supply, described pole plate
Being connected with power supply by wire, wherein said pole plate is iron plate or aluminium sheet or part monolithic part aluminium sheet, and adjacent plate spacing is
10～40mm, electrode thickness is 2-6mm.
In one or more specific embodiments, the power supply in described electricity flocculation reaction groove is high frequency pulse power supply, electricity
Current density is 3～50mA/cm2, voltage 2～10V between adjacent plate, electrolysis time 10min～120min.
In one or more specific embodiments, described ultrafilter membrane is inorganic carbon membrane or silicon carbide film, and membrane aperture is
0.01 micron～0.05 micron, in membrane tube, water flow velocity controls at 3-4m/s.
Present invention have the advantage that
(1) oily substance is removed thoroughly, can guarantee that subsequent biochemical system stable operation；
(2) being not required to separately add coagulant, ultrafilter membrane operating flux is high, and cleaning frequency is low, improves membrane module service life.
(3) simple to operate can realize Automatic Control flexibly, tackle water quality complexity.
Accompanying drawing explanation
Fig. 1 processes the system of emulsifying liquid waste water；Wherein 1 is fast mixed pond, and 2 is flocculation basin, and 3 is sedimentation tank, and 4 is that electricity flocculation is anti-
Answering groove, 5 is electricity flocculation sedimentation tank, and 6 is cyclic water tank, and 7 is ultrafiltration system.
Detailed description of the invention
For the ease of the understanding of summary of the invention, it is further described below in conjunction with embodiment.
First aspect present invention, it is provided that a kind of system processing emulsifying liquid waste water, described system includes mixing pond, flocculation soon
Pond, sedimentation tank, electricity flocculation reaction groove, electricity flocculation sedimentation tank, cyclic water tank, ultrafiltration system, described fast mixed pond, flocculation basin, precipitation
Pond, electricity flocculation reaction groove, electricity flocculation sedimentation tank, cyclic water tank are equipped with water inlet and outlet, ultrafiltration system be provided with water inlet,
Concentrated water spout, the product mouth of a river；Fast mixed pond outlet described in required fast mixed pond is connected with flocculation basin water inlet, flocculation basin outlet and precipitation
Pond water inlet is connected, and described electricity flocculation reaction groove includes water inlet and outlet, described electricity flocculation reaction groove water inlet and precipitation
Pond outlet is connected, and described electricity flocculation reaction groove outlet is connected with electricity flocculation sedimentation tank water inlet, described electricity flocculation sedimentation tank
Outlet is connected with cyclic water tank water inlet, and described cyclic water tank outlet is connected with ultrafiltration system intake pump water inlet, described
Ultrafiltration system concentrated water spout is connected with cyclic water tank water inlet, produces the mouth of a river and is connected with subsequent biochemical system.
In one or more concrete schemes, described electricity flocculation sedimentation tank is additionally provided with mud discharging mouth, turns from described mud discharging mouth
Removal micro-floccule.
In one or more specific embodiments, described fast mixed pond and flocculation basin are respectively equipped with quick mixer and at a slow speed
Blender；Wherein quick mixer rotating speed is 200-300 rev/min；Low rate mixing machine rotating speed is 50-80 rev/min.
A second aspect of the present invention, it is provided that the processing method of a kind of emulsifying liquid waste water, said method comprising the steps of:
(1) coagulating sedimentation: utilizing hydroxide micro-floccule Coagulation and Adsorption to process the emulsifying liquid waste water in fast mixed pond, coagulation is inhaled
Attached process 5～30min；Then with acid or alkali, pH is transferred to 7～9, after preferably 8～9；5～20mg/L are added again in flocculation basin
Polyacrylamide carries out flocculation reaction, and the response time controls 15～30min, forms the thick flco of free settling, then in precipitation
Remove flco after pond is precipitated 2～3 hours, form clear liquid；Described hydroxide micro-floccule produces from step (3) electricity flocculation electrolysis
Raw；Described heavy pool surface load is 0.7～1.2m3/m2·h；
(2) electricity flocculation reaction processes: the clear liquid that step (1) is formed processes through electricity flocculation reaction groove again, electricity flocculation water outlet
Enter in electricity flocculation sedimentation tank；
(3) electricity flocculation sedimentation tank processes: electricity flocculation water outlet precipitates 1～2 hour in electricity flocculation sedimentation tank, forms micro-floccule
And supernatant, the micro-floccule after precipitation is delivered to step (1) and uses as coagulant；The flocculation sedimentation tank surface loading control of described electricity
System is 1～1.5m3/m2·h；
(4) cyclic water tank storage: the supernatant that step (3) is formed is delivered in cyclic water tank；
(5) hyperfiltration advanced breakdown of emulsion filters: the water outlet in cyclic water tank is delivered to ultrafiltration system and carries out filtering and concentrating process；Dense
Emulsion after contracting entrusts third party to process, and leaches after clear liquid enters the process of subsequent biochemical system and directly discharges.
In one or more specific embodiments, described emulsifying liquid waste water is the waste water containing emulsion.
In one or more specific embodiments, described subsequent biochemical system includes anaerobic pond, Aerobic Pond；Through biochemistry
Can directly discharge after process.
In one or more specific embodiments, the micro-floccule that described step (3) produces quantitatively is inputted by screw pump
To step (1).
In one or more specific embodiments, described poly-propionic acid amide. is that PAMA and cation are gathered
Acrylamide.
In one or more specific embodiments, the molecular weight of described polyacrylamide is more than 800w, preferably 800w-
2400w。
In one or more specific embodiments, described electricity flocculation reaction groove includes polylith pole plate, power supply, described pole plate
Being connected with power supply by wire, wherein said pole plate is iron plate or aluminium sheet or part monolithic part aluminium sheet, and adjacent plate spacing is
10～40mm, electrode thickness is 2-6mm.
In one or more specific embodiments, the power supply in described electricity flocculation reaction groove is high frequency pulse power supply, electricity
Current density is 3～50mA/cm2, voltage 2～10V between adjacent plate, electrolysis time 10min～120min.
In one or more specific embodiments, described ultrafilter membrane is inorganic carbon membrane or silicon carbide film, and membrane aperture is
0.01 micron～0.05 micron, in membrane tube, water flow velocity controls at 3-4m/s.
As shown in Figure 1, a kind of system processing emulsifying liquid waste water, described system includes mixing pond 1, flocculation basin 2, precipitation soon
Pond 3, electricity flocculation reaction groove 4, electricity flocculation sedimentation tank 5, cyclic water tank 6, ultrafiltration system 7, described fast mixed pond 1, flocculation basin 2, precipitation
Pond 3, electricity flocculation reaction groove 4, electricity flocculation sedimentation tank 5, cyclic water tank are equipped with water inlet and outlet 6, ultrafiltration system 7 be provided with into
The mouth of a river, concentrated water spout, the product mouth of a river；Required fast mixed pond 1 outlet is connected with flocculation basin 2 water inlet, flocculation basin 2 outlet and sedimentation tank
3 water inlets are connected, and described electricity flocculation reaction groove 4 includes water inlet and outlet, described electricity flocculation reaction groove 4 water inlet and precipitation
Pond outlet is connected, and electricity flocculation reaction groove 4 outlet is connected with electricity flocculation sedimentation tank 5 water inlet, and described electricity flocculation sedimentation tank 5 goes out
The mouth of a river is connected with cyclic water tank 6 water inlet, and described cyclic water tank 6 outlet is connected with ultrafiltration system 7 intake pump water inlet.
Embodiment 1
Waste water was the emulsifying liquid waste water producing the discharge of oil evaluation emulsion workshop from certain originally, and COD is
20000mg/L, pH are 11.Using Fig. 1 shown device to process, handling process is as follows:
When present invention process runs first, owing to electricity flocculation does not has water flowing to run, there is no hydroxide micro-floccule, need to be by breast
Changing liquid waste water directly with being pumped into electricity flocculation reaction groove 4, electricity flocculation reaction groove 4 stops water inlet after filling emulsion.It is then turned on
The pulse power carries out cell reaction, forms hydroxide micro-floccule, then start to enter to the fast mixed pond 1 of electricity flocculation front end after reaction 1h
Water；Then following process step is carried out:
(1) emulsifying liquid waste water quickly mixes in fast mixed pond 1 with electricity flocculation generation hydroxide micro-floccule, and stirring turns
Speed 230 revs/min, utilizes the impurity such as micro-floccule adsorption-flocculation oil slick, then with hydrochloric acid, pH is adjusted to 8-9, the most again to flocculation
Pond 2 adds the PAMA generation flocculation reaction that 20mg/L molecular weight is 24,000,000, mixing speed 65 revs/min
Clock, forms the flco of thick free settling, then precipitation realizes mud-water separation for 2 hours in sedimentation tank 3, form clear liquid, sedimentation tank 3 table
Face load is 1m3/m2·h.Measuring supernatant C OD value is 15000mg/L；
(2) clear liquid that step (1) is formed processes through electricity flocculation reaction groove 4, and electricity flocculation pole plate is iron plate, and thickness is 2mm, electricity
Current density is 6.25A/m2, between adjacent plate, voltage is 4V, and the response time is 1 hour；(3) electricity flocculation water outlet is at electricity flocculation sediment
Reprecipitation 1 hour in pond 5, surface loading is 1.2m3/m2H, the micro-floccule after precipitation is all quantitatively transferred to step (1) conduct
Coagulant uses, and supernatant flows through cyclic water tank 6, then is delivered to filtering and concentrating in ultrafiltration system 7, concentrated solution 10 times with circulating pump
After, concentrated solution committee is outer to be processed, and sends into biochemical system and process after leaching clear liquid and the mixing of other waste water.Ultrafilter membrane is silicon carbide film,
Transmembrane pressure 0.3MPa, membrane flux 170L/m2H, film velocity in pipes is 4m/s, and the cleaning frequency is 2 weeks, uses 1% sodium hydroxide
Clean.Electricity supernatant C OD after precipitation of flocculating is 7000mg/L, and it is 700mg/L that ultrafiltration leaches clear liquid COD.Leach clear liquid again and
Entering biochemical system after plant area's other waste water mixing to process, bio-chemical effluent COD is stable at 200-300mg/L, meets COD ＜
500mg/L requirement.Sludge output in this embodiment is less, and the hydrated ferric oxide. using electricity flocculation to produce carries out breakdown of emulsion, because of nascent state
Hydrated ferric oxide. activity high, breakdown of emulsion efficiency is higher, and converting the hydrated ferric oxide. that water per ton adds is 300ppm.Hydrated ferric oxide. is finally deposited
It is in mud, calculates by mud solid content 10%, often process 1 ton of emulsifying waste water, only the mud amount of hydrated ferric oxide. formation generally
1.5kg。
Comparative example 1
Waste water produced the emulsifying liquid waste water of oil evaluation emulsion workshop discharge originally from Shanghai, and COD is
20000mg/L, pH are 11.Using chemical demulsification-air-float method to process, handling process is as follows:
First with hydrochloric acid, emulsifying liquid waste water is adjusted to 8-9, then adds aluminum chloride and carry out coagulation, dosage be 1200～
2000ppm, generally 1500ppm, add the PAMA that 50～80mg/L molecular weight are 24,000,000 afterwards and occur
Flocculation reaction forms bigger full-blown flowers, after then removing flco, remaining clear liquid and plant area's other waste water mixing by air supporting mode,
Entrance biochemical system processes.In the method:
(1) need to separately add coagulant polymeric aluminium chloride, and dosage is huge, costly, calculate by 2 yuan/kg of PAC price,
Adding PAC expense is 2.4～4 yuan/ton of water, generally 3 yuan/ton water.Additionally polyacrylamide dosage is also big, for side of the present invention
2 times of method.
(2) sludge output is relatively big, and sludge treatment is costly.The PAC added finally is completely converted into mud, by mud solid content
10% calculates, and often processes 1 ton of emulsifying waste water, and the mud amount that the PAC only added (by, dosage 1500ppm calculates) is formed is general
For 15kg, for 5 times of the present invention.The mud produced is qualitative useless for danger, and outer process of need to entrusting is disposed and taken 9000 yuan/ton, converts per ton
The outer expense of disposing of mud committee that water produces is 135 yuan.
(3) oil emulsion removal efficiency is low, bigger to biochemical system impact, it is impossible to ensure COD emission compliance.
Emulsifying liquid waste water is after chemical demulsification-air-flotation process, and COD is generally 18000mg/L, then mixes with plant area other waste water
After conjunction, owing to oil emulsion is removed not thorough, poisoning biological sludge relatively big, biochemical system treatment effeciency is low, bio-chemical effluent COD mono-
As be 1000ppm, do not reach COD less than the requirement of 500ppm, have to be diluted discharge with tap water, waste the most again big
The tap water of amount.
Embodiment 2
Waste water is from the emulsion of Wuxi steel cable factory drawing plant, and it is 10 that COD is about 30000mg/L, Ph, uses Fig. 1
Shown device processes, and handling process is essentially identical with embodiment 1, and main processes is summarized as follows:
(1) emulsifying liquid waste water quickly mixes in fast mixed pond 1 with electricity flocculation generation hydroxide micro-floccule, and stirring turns
Speed 250 revs/min, utilizes the impurity such as micro-floccule adsorption-flocculation oil slick, then with hydrochloric acid, pH is adjusted to 8-9, the most again to flocculation
Pond 2 adds the PAMA generation flocculation reaction that 10mg/L molecular weight is 24,000,000, mixing speed 50 revs/min
Clock, forms the flco of thick free settling, then precipitates 2.5 hours in sedimentation tank 3, and surface loading is 0.9m3/m2H, it is achieved mud
Water separates, and forms clear liquid.Measuring supernatant C OD value is 20000mg/L；
(2) clear liquid that step (1) is formed processes through electricity flocculation reaction groove 4, and electricity flocculation pole plate is iron plate, and thickness is 4mm, electricity
Current density is 12A/m2, between adjacent plate, voltage is 6V, and the response time is 45 minutes；
(3) electricity flocculation water outlet reprecipitation 1.3 hours in electricity flocculation sedimentation tank 5, surface loading is 1.2m3/m2H, precipitation
After micro-floccule be all quantitatively transferred to step (1) and use as coagulant, supernatant flows through cyclic water tank 6, then uses circulating pump
Being delivered to filtering and concentrating in ultrafiltration system 7, after concentrated solution 10 times, concentrated solution committee is outer to be processed, and leaches clear liquid and other waste water mixes
Rear feeding biochemical system processes.Ultrafilter membrane is silicon carbide film, transmembrane pressure 0.4MPa, membrane flux 150L/m2H, stream in membrane tube
Speed is 4m/s, and the cleaning frequency is 2 weeks, cleans with 1% sodium hydroxide.Electricity supernatant C OD after precipitation of flocculating is 10000mg/L,
It is 800mg/L that ultrafiltration leaches clear liquid COD.Leaching clear liquid anaerobism and aerobic process processes, bio-chemical effluent COD is stable at 300mg/L
Left and right, meets COD ＜ 500mg/L requirement.
Embodiment 3
Waste water carrys out the cutting fluid of Kunshan enterprise, and it is 6.7 that COD is about 55000mg/L, pH, uses at Fig. 1 shown device
Reason, handling process is essentially identical with embodiment 1, and main processes is summarized as follows:
(1) emulsifying liquid waste water quickly mixes in fast mixed pond 1 with electricity flocculation generation hydroxide micro-floccule, and stirring turns
Speed 300 revs/min, utilizes the impurity such as micro-floccule adsorption-flocculation oil slick, then with liquid caustic soda, pH is adjusted to 8-9, the most again to flocculation
Pond 2 adds the PAMA generation flocculation reaction that 15mg/L molecular weight is 24,000,000, mixing speed 70 revs/min
Clock, forms the flco of thick free settling, then carries out precipitating 3 hours in sedimentation tank 3, and surface loading is 0.7m3/m2H, it is achieved
Mud-water separation, forms clear liquid.Measuring supernatant C OD value is 35000mg/L；
(2) clear liquid that step (1) is formed processes through electricity flocculation reaction groove 4, and electricity flocculation pole plate is iron plate, and thickness is 4mm, electricity
Current density is 16A/m2, between adjacent plate, voltage is 8V, and the response time is 1.5 hours；
(3) electricity flocculation water outlet reprecipitation 1.3 hours in electricity flocculation sedimentation tank 5, surface loading is 1.1m3/m2H, precipitation
After micro-floccule be all quantitatively transferred to step (1) and use as coagulant, supernatant flows through cyclic water tank 6, then uses circulating pump
Being delivered to filtering and concentrating in ultrafiltration system 7, after concentrated solution 10 times, concentrated solution committee is outer to be processed, and leaches clear liquid and other waste water mixes
Rear feeding biochemical system processes.Ultrafilter membrane is silicon carbide film, transmembrane pressure 0.3MPa, membrane flux 160L/m2H, stream in membrane tube
Speed is 4m/s, and the cleaning frequency is 2 weeks, cleans with 1% sodium hydroxide.Electricity supernatant C OD after precipitation of flocculating is 17000mg/L,
It is 850mg/L that ultrafiltration leaches clear liquid COD.Leach clear liquid again with the mixing of plant area other waste water, enter original biochemical system and process, raw
Dissolve water COD stable at about 300mg/L, meet COD ＜ 500mg/L requirement.Emulsion processing cost about 500 in this embodiment
Yuan/ton.
Comparative example 2
Waste water carrys out the cutting fluid of Kunshan enterprise, and it is 6.7 that COD is about 55000mg/L, pH.This enterprise directly uses pottery
Film device filters.Owing to cutting fluid is the highest containing oil emulsion, transmembrane pressure is relatively big, and for 0.5MPa, membrane flux is low, for 90L/m2H,
Cleaning frequency is frequent, the most at least to clean 2 times.Owing to cleaning frequently, having a strong impact on membrane lifetime, every half a year just need to more renew
Film.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention
Any amendment, equivalent and the improvement etc. made within god and principle, should be included within the scope of the present invention.
Claims (10)
1. the system processing emulsifying liquid waste water, it is characterised in that described system includes mixing pond, flocculation basin, sedimentation tank, electricity soon
Flocculation reaction groove, electricity flocculation sedimentation tank, cyclic water tank, ultrafiltration system, described fast mixed pond, flocculation basin, sedimentation tank, electricity flocculation reaction
Groove, electricity flocculation sedimentation tank, cyclic water tank are equipped with water inlet and outlet, and ultrafiltration system is provided with water inlet, concentrated water spout, product water
Mouthful；Described fast mixed pond outlet is connected with flocculation basin water inlet, and flocculation basin outlet is connected with sedimentation tank water inlet；Described electricity wadding
Solidifying reactive tank water inlet is connected with sedimentation tank outlet, and electricity flocculation reaction groove outlet is connected with electricity flocculation sedimentation tank water inlet；
Described electricity flocculation sedimentation tank outlet is connected with cyclic water tank water inlet, described cyclic water tank outlet and ultrafiltration system intake pump
Water inlet is connected；Described ultrafiltration system concentrated water spout is connected with cyclic water tank water inlet, produces the mouth of a river and is connected with subsequent biochemical system；Excellent
Described in selection of land, electricity flocculation sedimentation tank is additionally provided with mud discharging mouth.
2. the system as claimed in claim 1, it is characterised in that described fast mixed pond and flocculation basin be respectively equipped with the first blender and
Second blender；Wherein the first blender rotating speed is 200-300 rev/min；Second blender rotating speed is 50-80 rev/min.
3. the processing method of an emulsifying liquid waste water, it is characterised in that said method comprising the steps of:
(1) coagulating sedimentation: utilize hydroxide micro-floccule Coagulation and Adsorption to process the emulsifying liquid waste water in fast mixed pond, at Coagulation and Adsorption
Reason 5～30min；Then with acid or alkali, pH is transferred to 7～9, after preferably 8～9；5～20mg/L poly-third are added again in flocculation basin
Acrylamide carries out flocculation reaction, and the response time controls 15～30min, forms the thick flco of free settling, then in sedimentation tank
Remove flco after precipitating 2～3 hours, form clear liquid；Described hydroxide micro-floccule produces from step (3) electricity flocculation electrolysis；
Described heavy pool surface load is 0.7～1.2m3/m2·h；
(2) electricity flocculation reaction processes: the clear liquid that step (1) is formed processes through electricity flocculation reaction groove again, and electricity flocculation water outlet enters
To electricity flocculation sedimentation tank；
(3) electricity flocculation sedimentation tank processes: electricity flocculation water outlet precipitates 1～2 hour in electricity flocculation sedimentation tank, forms micro-floccule and upper
Clear liquid, the micro-floccule after precipitation is delivered to step (1) and uses as coagulant；Described electricity flocculation sedimentation tank surface loading controls
1～1.5m3/m2·h；
(4) cyclic water tank storage: the supernatant that step (3) is formed is delivered in cyclic water tank；
(5) hyperfiltration advanced breakdown of emulsion filters: the water outlet in cyclic water tank is delivered to ultrafiltration system and carries out filtering and concentrating process；After concentration
Emulsion entrust third party process, leach clear liquid enter subsequent biochemical system process after directly discharge.
4. method as claimed in claim 3, it is characterised in that described emulsifying liquid waste water is the waste water containing emulsion.
5. method as claimed in claim 3, it is characterised in that described subsequent biochemical system includes anaerobic pond, Aerobic Pond；Pass through
Can directly discharge after biochemical treatment.
6. method as claimed in claim 3, it is characterised in that the micro-floccule that described step (3) produces is quantitative by screw pump
Input to step (1).
7. method as claimed in claim 3, it is characterised in that the molecular weight of polyacrylamide is more than 800w, preferably 800w-
2400w。
8. method as claimed in claim 3, it is characterised in that described electricity flocculation reaction groove includes polylith pole plate, power supply, described
Pole plate is connected with power supply by wire, and wherein said pole plate is iron plate or aluminium sheet or part monolithic part aluminium sheet, between adjacent plate
Away from for 10～40mm, electrode thickness is 2-6mm.
9. method as claimed in claim 3, it is characterised in that the power supply in described electricity flocculation reaction groove is high-frequency electrical pulses
Source, electric current density is 3～50mA/cm2, voltage 2～10V between adjacent plate, electrolysis time 10min～120min.
10. method as claimed in claim 3, it is characterised in that described ultrafilter membrane is inorganic carbon membrane or silicon carbide film, membrane aperture
Being 0.01 micron～0.05 micron, in membrane tube, water flow velocity controls at 3-4m/s.
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| CN105932604A (en) * | 2016-06-13 | 2016-09-07 | 国网山东省电力公司龙口市供电公司 | Power construction cable hanging bracket |
| CN108726703A (en) * | 2018-04-27 | 2018-11-02 | 陈阳波 | A kind of coal-contained wastewater treatment process and equipment |
| CN110117121A (en) * | 2019-05-14 | 2019-08-13 | 吉林建筑大学 | A kind of processing method of the waste water containing size |
| CN110723849A (en) * | 2019-11-21 | 2020-01-24 | 东莞市三人行环境科技有限公司 | Silicon-containing wastewater silicon removal treatment process and system |
| CN112266108A (en) * | 2020-11-24 | 2021-01-26 | 江苏科技大学 | Machining emulsified waste liquid treatment device and process based on effective component recovery |
| CN112520911A (en) * | 2020-10-09 | 2021-03-19 | 福建省霞浦正亚环保科技有限公司 | Landfill leachate concentrated water treatment method |
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| CN105932604A (en) * | 2016-06-13 | 2016-09-07 | 国网山东省电力公司龙口市供电公司 | Power construction cable hanging bracket |
| CN108726703A (en) * | 2018-04-27 | 2018-11-02 | 陈阳波 | A kind of coal-contained wastewater treatment process and equipment |
| CN110117121A (en) * | 2019-05-14 | 2019-08-13 | 吉林建筑大学 | A kind of processing method of the waste water containing size |
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| CN112520911A (en) * | 2020-10-09 | 2021-03-19 | 福建省霞浦正亚环保科技有限公司 | Landfill leachate concentrated water treatment method |
| CN112520911B (en) * | 2020-10-09 | 2022-09-02 | 福建省霞浦正亚环保科技有限公司 | Landfill leachate concentrated water treatment method |
| CN112266108A (en) * | 2020-11-24 | 2021-01-26 | 江苏科技大学 | Machining emulsified waste liquid treatment device and process based on effective component recovery |
| WO2023113703A3 (en) * | 2021-12-16 | 2023-09-14 | Hofitech S.R.O. | A method of producing metal hydroxides in controlled purity grades suitable for the production of ceramic materials |
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