CN102642961A - Reuse treatment method for industrial wastewater from refrigerator compressor factory - Google Patents
Reuse treatment method for industrial wastewater from refrigerator compressor factory Download PDFInfo
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- CN102642961A CN102642961A CN2012101466175A CN201210146617A CN102642961A CN 102642961 A CN102642961 A CN 102642961A CN 2012101466175 A CN2012101466175 A CN 2012101466175A CN 201210146617 A CN201210146617 A CN 201210146617A CN 102642961 A CN102642961 A CN 102642961A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention relates to a reuse treatment method for industrial wastewater from a refrigerator compressor factory. Firstly, independently collected emulsified bath solution wastewater is acidified and demulsified, free oil and emulsified oil in the wastewater are eliminated, and then the wastewater is subjected to Fe<2+>/H2O2 oxidation, the effluent pH is 7-8, and then coagulant aid is added for coagulation sedimentation, and organic matter, metal salt and SS are removed, so that emulsified bath solution water is obtained. Subsequently, the emulsified bath solution water and the independently collected rinsing wastewater are uniformly mixed according to the ratio of 1:20-30 to serve as the source water for micro filter membrane treatment; the source water is subjected to air floatation oil separation dephosphorization, coagulation and activated carbon adsorption to obtain water with the pH value of 9-10 under micro filtration, and then the water under micro filtration enters the micro filter membrane, so clean water is obtained; and the clean water and tap water are mixed according to the ratio of 1:1-2, are subjected to filtering by activated carbon and 5um precise filtration and enter a reverse osmosis membrane, and then pure water is obtained after desalination, and the pure water can be reused for production. With the reuse treatment method, the water quality of reused water is stable and can reach the standard of pure water used by enterprises for production, the water is reused for a product line, so that the wastewater discharge of the enterprises is greatly reduced, the use volume of tap water is saved, and remarkable economical and social benefits are achieved.
Description
Technical field
The present invention relates to a kind of freezer compressor factory industrial effluent reusing treatment process.Belong to the waste water recycling technical field.
Technical background
Freezer compressor relates to numerous technologies such as comprising pickling iron and steel purification, mechanical cutting processing, metal phosphorizing, surface adjustment, electrophoresis spraying, metal heat treatmet, plating and surface treatment, cleaning in manufacturing processed.Each production and processing technology often all needs a large amount of tap water or pure water, ultrapure water to participate in, and also produces a large amount of waste water simultaneously.The waste water that freezer compressor manufacturing processing produces is because production technique is different, and the composition of the waste water of generation also has nothing in common with each other.Wherein, The contaminated wastewater material that produces in mechanical cutting processing, metal phosphorizing degreasing, plating, the technological process such as antirust is various; Comprise MO, cutting fluid, all kinds of emulsifying agents, lubricant, rust-preventive agent and various tensio-active agent; Heavy metals such as various pigment, dyestuff, coating, paint vehicle, all kinds of alcohol, aldehyde, ether, ketone, benzene series, naphthalene series organic compound and copper, zinc, manganese, this tank liquor waste water is hard to manage, biodegradability is poor.It is simple and content is low to clean etc. in the Cleaning Wastewater that cleaning produced the pollution substance composition after pickling iron and steel, surface cleaning and the phosphatization degreasing, is prone to handle.
The waste water that freezer compressor manufacturing at present produces generally is to handle through following steps: regrowth oxidation after first coagulation, the air supporting; Enter to the municipal wastewater pipe network after reaching country or local enterprise's emission standard of stipulating, and freezer compressor factory does not further handle as being back to production.Do not find freezer compressor manufacturing concern waste water recycling in the report of producing yet.In recent years, the water globe environment goes from bad to worse, and water resources shortage has become worldwide trend, and the shortage of some regional water resourcess maybe will restrict development of modern industry.The freezer compressor manufacturing is to need water rich and influential family and blowdown rich and influential family, and water is more outstanding in this field with the contradiction that needs water, and reuse after its wastewater treatment is great to freezer compressor manufacturing concern development in future and alleviation water globe resource contradiction Significance for Environment.
Summary of the invention
The purpose of this invention is to provide a kind of ability economical and efficient ground and remove the method that freezer compressor is made oils, tensio-active agent and other objectionable impurities in the waste water, realize waste water recycling.
In order to achieve the above object; The present invention studies and tests the removal method of oils, tensio-active agent and other objectionable impurities in the waste water of making the freezer compressor generation; Find to adopt inexpensive commercially available wilkinite, and search out under pH=2～4 conditions, adsorptive capacity can significantly improve; In conjunction with emulsion splitter calcium chloride, alum and PAM etc. possibility can be provided for follow-up purification, concrete technology is following:
The first step, categorised collection.The trade effluent that the freezer compressor manufacturing processed is produced divides two types; One type be that the water yield is little, concentration is high and the machine cut of complicated component with after the tank liquor waste water that produces of emulsion and phosphatization, degreasing, antirust job shop; Abbreviate emulsification, tank liquor waste water as, centralized collection is in emulsion, tank liquor collecting tank; Another kind of is the little and simple waste water of composition of the big concentration of the water yield that produces such as to clean after pickling iron and steel, surface cleaning and the phosphatization degreasing, is called Cleaning Wastewater, merges after the centralized collection through the second step pre-treatment to obtain in emulsification, the tank liquor water.
In second step, emulsification, tank liquor waste water are carried out pre-treatment obtain emulsification, tank liquor water.Earlier emulsification, tank liquor waste water were stopped 2～3 days in emulsification, tank liquor collecting tank, make the solid precipitation of suspension, dispersive oil slick come-up back utilizes after recycling with the belt oil extracting machine again; To remove dispersive oil slick and solid waste water and pump into acidifying breakdown of emulsion pond, and add sulfuric acid, the vitriolic dosage reaches 2～4 with the pH of waste water and is as the criterion; Add calcium chloride, alum and wilkinite again and carry out the acidifying breakdown of emulsion; Aeration agitation added PAM after 50 minutes, weak aeration agitation 5 minutes, leave standstill 30 minutes after; Supernatant liquid is fed oil trap, and lower floor's mud is delivered to sludge thickener and is focused on;
Above-mentioned calcium chloride dosage is the 0.10-0.12% that has removed dispersive oil slick and solid waste water weight; With its calcium chloride solution that is mixed with 20% weight percent concentration, add again earlier; The alum dosage is the 0.15-0.17% that has removed dispersive oil slick and solid waste water weight, earlier with its alum solution that is mixed with 10% weight percent concentration, adds again; Bentonitic dosage is the 0.2-0.3% that has removed dispersive oil slick and solid waste water weight;
Oil slick in the supernatant liquid behind the acidified breakdown of emulsion under the pressurized air reliever effect of in oil trap, being equipped with, is concentrated to swim in the oil trap surface, collects the supernatant liquid that obtains behind the oil slick with the waste oil gathering barrel and gets into Fe
2+/ H
2O
2Oxidation pond adds FeSO then
4And H
2O
2, stir, carried out catalytic oxidation 50～70 minutes; Degrading gets into coagulation basin behind most of organism, in coagulation basin, adds NaOH, and the NaOH dosage is as the criterion so that pH is transferred to 7～8; Add coagulant aids PAM then, the PAM dosage gets into the inclined plate sedimentation pond for collecting the 0.05-0.07% of the supernatant liquid weight that obtains behind the oil slick after the aeration agitation; Hydraulic detention time is 2 hours; Clear liquid is emulsification, tank liquor water after the sedimentation, and emulsification, tank liquor water enter emulsification, tank liquor pond earlier, feeds to carry out the aeration mixing in the Cleaning Wastewater pond again; Lower floor's mud is delivered to sludge thickener and is focused on;
Above-mentioned FeSO
4Dosage is the 0.2-0.3% that collects the weight of the supernatant liquid behind the oil slick, earlier it is mixed with the FeSO of 20% weight percent concentration
4Solution adds again; Above-mentioned H
2O
2Dosage is the 0.15-0.17% that collects the weight of the supernatant liquid behind the oil slick, earlier it is mixed with the H of 30% weight percent concentration
2O
2Solution adds again;
In the 3rd step, emulsification, tank liquor water aeration mix the source water that obtains the microfiltration membrane processing, measure earlier emulsification, tank liquor water by volume: Cleaning Wastewater=1: 20～30 that the first step is collected, and aeration makes it mix the source water of handling as next step microfiltration membrane again;
In the 4th step, source water oil removing dephosphorization coagulating obtains treating micro-filtration water, is that 20m3/h pumps into elevated air supporting oil trap with the source water that mixes by flow; The pressurized air reliever is housed in the air supporting oil trap, is collected into the waste oil gathering barrel after making oil slick come-up, the source water after the air supporting oil removal is handled gets into pH regulator pond I; Add NaOH pH is controlled at 9～10, add calcium chloride, mechanical stirring is mixed the phosphorus in the water of removal source; The I water outlet of pH regulator pond gets into pH regulator pond II, adds NaOH pH is controlled at 9～10, adds polymeric aluminium chlorohydroxide again; Stir; Carry out getting into the circulation concentration basin behind the coagulating, measure the Powdered Activated Carbon of the 0.06-0.08% of source water weight, the Powdered Activated Carbon solution that its preparation is become 30% weight percent concentration is added in the circulation concentration basin; Membrane contaminant matter such as organism to remove in the waste water obtain treating micro-filtration water, and lower floor's mud is delivered to sludge thickener and focused in the circulation concentration basin;
Above-mentioned calcium chloride dosage is the 0.10-0.15% of source water weight, and elder generation adds the calcium chloride solution that it is mixed with 20% weight percent concentration again;
Above-mentioned polymeric aluminium chlorohydroxide dosage is the 0.10-0.15% of source water weight, and elder generation adds the polymeric aluminium chlorohydroxide solution that it is mixed with 20% weight percent concentration again;
The 5th step; Treat that micro-filtration water obtains asking water through micro-filtrate membrane filtration; The micro-filtration water of treating in the circulation concentration basin in the 4th step is pumped into the DF-415 type micro-filtration membrane module of U.S. Duraflow company; Filter at pressure 0.08MPa～0.25MPa, concentrate recirculation filters to the concentration basin recycling that circulates, and the clear water that the micro-filtration assembly obtains after filtering gets into r-o-source water tank;
In the 6th step, clear water is through reuse after the reverse osmosis desalination, in the water tank of r-o-source; The clear water that earlier the micro-filtration assembly is come out mixes with tap water, and ratio of mixture is a clear water: tap water=1: 1～1: 2 by volume, behind the mixing; Pump into full-automatic activated charcoal filter by topping-up pump, water outlet adds the r-o-scale inhibitor special automatically, after 5 μ m accurate filters filter; Pump into secondary HYDRANAUTICS company antipollution type reverse osmosis membrane LFC3-LD unit by HPP, under pressure 1MPa～2MPa, carry out desalting treatment, obtain the pure water of accords with production line requirement; Pure water gets into the pure water case; Be back to production line, dense water is back to the Cleaning Wastewater pond, and the r-o-stdn is passed through the salt rate and surpassed 5% laggard column criterion r-o-cleaning.
The CODcr of the emulsion in the emulsification of the above-mentioned the first step, the tank liquor waste water is 80000-100000, and BOD5 is 10000-120000, and petroleum-type is 2000-3000, pH=9, SS=50mg/L.
The CODcr of the tank liquor in the emulsification of the above-mentioned the first step, the tank liquor waste water is 4000-6000, BOD
5Be 1000, petroleum-type is 700, pH=4, Mn=150mg/L, Zn=20mg/L, total P=150mg/L, SS=50mg/L.
The CODcr of the Cleaning Wastewater of the above-mentioned the first step is 200-300, BOD
5Be 20-50, petroleum-type is 30, and pH=6-9, Mn be less than 2mg/L, and Zn is less than 5mg/L, total P=5-10mg/L, SS=20mg/L.
In above-mentioned second step emulsification, tank liquor waste water are carried out pretreated acidifying breakdown of emulsion pond and inclined plate sedimentation pond; And the 4th the step, source water oil removing dephosphorization coagulating in the circulation concentration basin; Lower floor's mud at three places, delivering to that sludge thickener focuses on is to adopt Hangzhou Xing Yuan X
AZ30/800-U
BThe type pressure filter, by the automatic pressurize press filtration of hydraulicefficiency plant, press filtration water returns in the emulsion, tank liquor collecting tank of the first step; After handling, clod utilizes again.
The present invention has following advantage and effect:
1; Because the present invention divides two types to collect waste water; To carrying out pre-treatment after the high and complicated emulsification of concentration, the tank liquor wastewater collection; Through the compartment barricade that establish on emulsification, tank liquor collecting tank top, remove the dispersed oil and the part that float in emulsification, the tank liquor waste water and take off steady oil in water emulsion, reduce the COD value and the oil-contg of emulsification, tank liquor waste water greatly.
2; Because the present invention adds wilkinite and oil in water emulsion in the waste water is carried out the acidifying breakdown of emulsion when carrying out pre-treatment after to emulsification, tank liquor wastewater collection, and pH is adjusted to 2～4, therefore; Tank liquor, emulsifying waste water are after acidifying breakdown of emulsion and wilkinite absorption; Removal effect of organic matter such as oil in water emulsion and tensio-active agent is remarkable, through mensuration in the waste water COD clearance can reach 60%-80% or more than, most of phosphorus also is removed.
3, owing to adopt Fe when carrying out pre-treatment after the emulsification of the present invention, tank liquor wastewater collection
2+/ H
2O
2Oxidation makes the organic substance of the complicacy of difficult degradation in tank liquor, the emulsifying liquid waste water be degraded into simple organism and inorganic salt to a great extent, and the COD in the waste water more than 50% is able to remove.Thereafter coagulant precipitation can reduce turbidity, the heavy metal content of waste water greatly.
4; Owing to add calcium chloride after the Cleaning Wastewater of the pretreated emulsification of the present invention, tank liquor water and the first step collection is mixed; Handle again through coagulation, charcoal absorption that water outlet COD value is low after DF-415 type microfiltration membrane (its filtration efficiency and filtration yield are the twices of the common filter membrane) filtration of 0.1 micron U.S. Duraflow company, turbidity is almost nil; Specific conductivity and satisfies the feed water by reverse osmosis water quality requirement after tap water mixed in 1: 1～1: 2 fully below 2000 μ s/cm.
5, the gas backwash pressure was about 0.5MPa from employing the pressurized air backwash 1 minute in 10 minutes for the every operation of microfiltration membrane of the present invention.Microfiltration membrane was moved about a week, after the membrane flux decline 70%, and artificial cleaning of stopping transport; About pressure 0.5MPa, used 3%～5% sulfuric acid wash cycles respectively 60 minutes, with clear water wash cycles 10 minutes; Again with about 5% Youxiaolin wash cycles 60 minutes and soaked after 2 hours the recycling operation 10 minutes; Use clear water wash cycles 5 minutes for use then, therefore, membrane flux can recover 90%～100%.
6; Since r-o-of the present invention reduces by 10% or more in water production rate, water inlet and dense differential water pressures have risen 15% and r-o-pass through salt rate increase by 5% when above; Clean down about pressure 0.3MPa with reverse osmosis produced water and by 0.1%NaOH, 2.0% Hydrocerol A and 0.025% sodium laurylsulfonate salt that reverse osmosis produced water is prepared; Therefore, guarantee that water outlet reaches the reuse index.
7, the waste water that produces in the freezer compressor manufacturing processed of the present invention realizes that the treatment process of reuse is inexpensive materials such as employing wilkinite, and therefore, this method has great economic benefit and society, environmental benefit.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
The invention is further illustrated by the following examples.
Be treated to example with Jiaxing freezer compressor manufacturing concern waste water recycling, technical process is by shown in Figure 1.The waste water that the freezer compressor manufacturing processed produces divides two types to collect through tank liquor, two collecting tanks of emulsion collecting tank and Cleaning Wastewater pond: respectively that the water yield is little, concentration is high and the machine cut of complicated component with after the tank liquor waste water that produces of emulsion and phosphatization, degreasing, antirust job shop, abbreviate emulsification, tank liquor wastewater collection as at tank liquor, emulsion collecting tank; Another kind of is the little and simple wastewater collection of composition of the big concentration of the water yield that produces such as to clean after pickling iron and steel, surface cleaning and the phosphatization degreasing in the Cleaning Wastewater pond.Table 1 is Jiaxing freezer compressor manufacturing concern waste water water yield and water quality.
Table 1 certain the freezer compressor manufacturing concern waste water water yield and water quality
Second step with the emulsification in emulsion, the tank liquor collecting tank, tank liquor waste water, stopped 2～3 days, made suspended solids deposition,, isolated behind the oil slick with pneumatic diaphragm pump with 2.5m dispersed oil that floats and oil slick removal with the belt oil extracting machine
3/ h; Emulsification, tank liquor waste water are promoted to acidifying breakdown of emulsion pond, and acidifying breakdown of emulsion tankage is 10t, by the unlatching of online liquid level appearance control pump; Add sulfuric acid; Online pH monitor control pH is 2～4, and adding concentration simultaneously is that 20% emulsion splitter calcium chloride 12L, 10% alum 17L and wilkinite 30kg carry out the acidifying breakdown of emulsion, and aeration agitation adds 0.1L PAM after 50 minutes; Aeration agitation left standstill after 5 minutes 30 minutes, used pneumatic pump that supernatant liquid is promoted to overall dimensions continuously and was L3000 * W2000 * H2000mm, the bottom oil trap of combining, the Fe as cone (being convenient to mud collects)
2+/ H
2O
2In oxidation pond and the coagulation basin.Fe
2+/ H
2O
2Add 20%FeSO in the oxidation pond
4, dosage is 30L, 30%H
2O
2, dosage is 15L, mechanical stirring mixed oxidization reaction 60 minutes.Fe
2+/ H
2O
2Coagulation basin is gone in oxidation pond water outlet overflow; Automatically add 30%NaOH in the coagulation basin, be controlled at 7～8 by online pH monitor, the amount that adds coagulant aids PAM is 5L; Air-blowing is stirred back coagulation basin water outlet and is got into the inclined plate sedimentation pond; Hydraulic detention time is 2 hours, and clear liquid enters emulsification, the tank liquor pond becomes emulsification, tank liquor water (water quality components please be seen table 2), feeds to carry out the aeration mixing in the Cleaning Wastewater pond again; Lower floor's mud is delivered to sludge thickener and is focused on.
In the 3rd step, measure earlier emulsification, tank liquor water that second step obtained by volume: Cleaning Wastewater=1: 20～30 that the first step is collected, aeration makes it mix the source water of handling as next step microfiltration membrane again;
In the 4th step, source water is promoted to high-order air supporting oil trap by the self-priming no-blocking pollution discharging pump again, and flow is 20m
3/ h is equipped with the pressurized air reliever in the oil trap, make the oil slick come-up, and oil slick can be put to the waste oil gathering barrel through manually opened ball valve.Waste water entering capacity after oil removal is handled is 9m
3PH regulator pond I, add 30%NaOH automatically pH transferred to 8～9, and add 20% calcium chloride 20L/h, mechanical stirring is mixed, it is 9m that pH regulator pond II capacity is gone in the water outlet overflow
3, adding 30%NaOH automatically, pH is controlled at 9～10, adds 20% polymeric aluminium chlorohydroxide 20L/h and carries out coagulating, and mechanical stirring is mixed, and it is 9m that the II water overflow of pH regulator pond gets into circulation concentration basin capacity
3, adding 30% Powdered Activated Carbon 12L/h, the membrane contaminant matter of removing in the waste water such as organism obtain treating micro-filtration water, lower floor's mud is delivered to sludge thickener and is focused in the circulation concentration basin.
In the 5th step, treat that micro-filtration water obtains asking water through micro-filtrate membrane filtration, pumps into the DF one 415 type micro-filtration membrane modules of U.S. Duraflow company with the micro-filtration water of treating in the circulation concentration basin in the 4th step; Filter at pressure 0.08MPa～0.25MPa, concentrate recirculation filters to the concentration basin recycling that circulates, the clear water (water quality components please be seen table 2) that the micro-filtration assembly obtains after filtering; Get into r-o-source water tank, 2 groups of microfiltration membrane, one is equipped with a usefulness; Backwashing pressure was 0.5MPa from taking offence back flushing 1 minute in 10 minutes in every operation, and matting is shut down in membrane flux decline 70% back; Respectively with sulfuric acid and Youxiaolin and tap water cleaning, membrane flux can recover 90% to 100% under 0.5MPa.
Table 2 is emulsification, tank liquor water, clear water water quality
In the 6th step, the clear water that the micro-filtration assembly comes out mixed with tap water in 1: 1 by volume～1: 2, pressed 22m by topping-up pump
3/ h pumps into full-automatic activated charcoal filter (1200 * 2400H); Filtering velocity is 9.7m/h, and water outlet adds r-o-scale inhibitor special 0.012kg/h automatically, after 5 μ m accurate filters filter; Pump into secondary HYDRANAUTICS company antipollution type reverse osmosis membrane LFC3-LD unit by HPP; At pressure is to carry out desalting treatment under the 1.6MPa, and the r-o-effluent quality is seen table 3, and the technological standard that freezer compressor is made the processing pure water is satisfied in the r-o-water outlet fully; Be stored in the pure water case, be used for the production reuse.Reverse osmosis concentrated water is back to the Cleaning Wastewater pond, uses again.
The r-o-stdn is passed through the salt rate and is surpassed 5% laggard column criterion r-o-cleaning.
In the circulation concentration basin, in the acidifying breakdown of emulsion pond and the mud in the inclined plate sedimentation pond all pump into sludge thickener automatically by pneumatic pump, pump into Hangzhou Xing Yuan X by the manual activation sludge pump when mud liquid level is high in the sludge thickener
AZ30/800-U
BThe type pressure filter by the automatic pressurize press filtration of hydraulicefficiency plant, utilizes after clod is handled after the press filtration again, and press filtration water enters emulsion, tank liquor collecting tank.
Table 3 is r-o-water outlet (pure water) water quality.
Claims (5)
1. freezer compressor factory industrial effluent reusing treatment process is characterized in that:
The first step divides two types to collect freezer compressor factory trade effluent,
One type is emulsification, tank liquor waste water, comprise machine cut with after emulsion and the tank liquor waste water of phosphatization, degreasing, the generation of antirust job shop, with their centralized collection in emulsion, tank liquor collecting tank;
Another kind of is the Cleaning Wastewater that pickling iron and steel, surface cleaning and phosphatization degreasing produce, and merges to after the centralized collection through the second step pre-treatment to obtain in emulsification, the tank liquor water;
In second step, emulsification, tank liquor waste water are carried out pre-treatment obtain emulsification, tank liquor water
Earlier emulsification, tank liquor waste water were stopped 2～3 days in emulsification, tank liquor collecting tank, make the solid precipitation of suspension, dispersive oil slick come-up, oil slick utilizes after recycling with the belt oil extracting machine again; Removed oil slick and solid waste water and pumped into acidifying breakdown of emulsion pond, added sulfuric acid, the vitriolic dosage reaches 2～4 with the pH of waste water and is as the criterion; Add calcium chloride, alum and wilkinite again and carry out the acidifying breakdown of emulsion; Aeration agitation added PAM after 50 minutes, and aeration agitation is 5 minutes again, left standstill 30 minutes; At last supernatant liquid is fed oil trap, lower floor's mud is delivered to sludge thickener and is focused on;
Above-mentioned calcium chloride dosage is the 0.10-0.12% that has removed oil slick and solid waste water weight; With its calcium chloride solution that is mixed with 20% weight percent concentration, add again earlier;
Above-mentioned alum dosage is the 0.15-0.17% that has removed oil slick and solid waste water weight, earlier with its alum solution that is mixed with 10% weight percent concentration, adds again;
Above-mentioned bentonitic dosage is the 0.2-0.3% that has removed oil slick and solid waste water weight;
Under the pressurized air reliever effect of supernatant liquid behind the acidified breakdown of emulsion in oil trap, oil slick is wherein concentrated the surface swim in oil trap, collects the supernatant liquid entering Fe behind the oil slick with the waste oil gathering barrel
2+/ H
2O
2Oxidation pond adds FeSO then
4And H
2O
2, stir, carried out catalytic oxidation 50～70 minutes; Degrading gets into coagulation basin behind most of organism, in coagulation basin, adds NaOH, and the NaOH dosage is as the criterion so that pH is transferred to 7～8; Add coagulant aids PAM then, the PAM dosage gets into the inclined plate sedimentation pond for collecting the 0.05-0.07% of the supernatant liquid weight behind the oil slick after the aeration agitation; Hydraulic detention time is 2 hours; Clear liquid after the sedimentation is emulsification, tank liquor water, enters emulsification, tank liquor pond earlier, feeds to carry out the aeration mixing in the Cleaning Wastewater pond again; Lower floor's mud is delivered to sludge thickener and is focused on;
Above-mentioned FeSO
4Dosage is the 0.2-0.3% that collects the weight of the supernatant liquid behind the oil slick, earlier with FeSO
4Be mixed with the FeSO of 20% weight percent concentration
4Solution adds again;
Above-mentioned H
2O
2Dosage is the 0.15-0.17% that collects the weight of the supernatant liquid behind the oil slick, earlier with H
2O
2Be mixed with the H of 30% weight percent concentration
2O
2Solution adds again;
In the 3rd step, emulsification, tank liquor water aeration mix the source water that obtains the microfiltration membrane processing
Measure earlier emulsification, tank liquor water by volume: Cleaning Wastewater=1: 20～30 that the first step is collected, aeration makes it mix the source water of handling as next step microfiltration membrane again;
In the 4th step, source water oil removing dephosphorization coagulating obtains treating micro-filtration water
Is 20m with the source water that mixes by flow
3/ h pumps into elevated air supporting oil trap, and the pressurized air reliever is housed in the air supporting oil trap, is collected into the waste oil gathering barrel after making oil slick come-up; Source water after the air supporting oil removal is handled gets into pH regulator pond I, adds NaOH and calcium chloride, and mechanical stirring is mixed the phosphorus in the water of removal source; The I water outlet of pH regulator pond gets into pH regulator pond II, adds NaOH, adds polymeric aluminium chlorohydroxide again; Stir; Carry out getting into the circulation concentration basin behind the coagulating, measure the Powdered Activated Carbon of the 0.06-0.08% of source water weight, the Powdered Activated Carbon solution that its preparation is become 30% weight percent concentration is added in the circulation concentration basin; Membrane contaminant matter such as organism to remove in the waste water obtain treating micro-filtration water, and lower floor's mud is delivered to sludge thickener and focused in the circulation concentration basin;
Above-mentioned calcium chloride dosage is the 0.10-0.15% of source water weight, and elder generation adds the calcium chloride solution that it is mixed with 20% weight percent concentration again;
Above-mentioned polymeric aluminium chlorohydroxide dosage is the 0.10-0.15% of source water weight, and elder generation adds the polymeric aluminium chlorohydroxide solution that it is mixed with 20% weight percent concentration again;
Above-mentioned NaOH dosage is source water pH to be controlled at 9～10 be as the criterion;
In the 5th step, treat that micro-filtration water obtains asking water through micro-filtrate membrane filtration
The micro-filtration water of treating in the circulation concentration basin in the 4th step is pumped into the DF-415 type micro-filtration membrane module of U.S. Duraflow company; Filter at pressure 0.08MPa～0.25MPa; Concentrate recirculation filters to the concentration basin recycling that circulates, and the clear water that the micro-filtration assembly obtains after filtering gets into r-o-source water tank;
In the 6th step, clear water is through reuse after the reverse osmosis desalination
In the water tank of r-o-source, the clear water that earlier the micro-filtration assembly is come out mixes clear water by volume with tap water: tap water=1: 1～1: 2 volume; Behind the mixing, pump into full-automatic activated charcoal filter, after water outlet adds the r-o-scale inhibitor special automatically by topping-up pump; After 5 μ m accurate filters filter, pump into reverse osmosis membrane by HPP, be to carry out desalting treatment under 1MPa～2MPa at pressure; Obtain the pure water of accords with production line requirement; Pure water gets into the pure water case, is back to production line, and dense water is back to the Cleaning Wastewater pond; The r-o-stdn is passed through the salt rate and is surpassed 5% laggard column criterion r-o-cleaning;
Above-mentioned reverse osmosis membrane is the resistant to pollution LFC3-LD type reverse osmosis membrane that Hydranautics produces.
2. freezer compressor according to claim 1 factory industrial effluent reusing treatment process; It is characterized in that: the CODcr of the emulsion in the emulsification of the described the first step, the tank liquor waste water is 80000-100000; BOD5 is 10000-120000; Petroleum-type is 2000-3000, pH=9, SS=50mg/L.
3. freezer compressor according to claim 1 factory industrial effluent reusing treatment process, it is characterized in that: the CODcr of the tank liquor waste water in the emulsification of the described the first step, the tank liquor waste water is 4000-6000, BOD
5Be 1000, petroleum-type is 700, pH=4, Mn=150mg/L, Zn=20mg/L, total P=150mg/L, SS=50mg/L.
4. freezer compressor according to claim 1 factory industrial effluent reusing treatment process, it is characterized in that: the CODcr of the Cleaning Wastewater of the described the first step is 200-300, BOD
5Be 20-50, petroleum-type is 30, and pH=6-9, Mn be less than 2mg/L, and Zn is less than 5mg/L, total P=5-10mg/L, SS=20mg/L.
5. freezer compressor according to claim 1 factory industrial effluent reusing treatment process; It is characterized in that: in described second step emulsification, tank liquor waste water are carried out pretreated acidifying breakdown of emulsion pond and inclined plate sedimentation pond; And the 4th the step; In the circulation concentration basin of source water oil removing dephosphorization coagulating, lower floor's mud at three places, delivering to that sludge thickener focuses on is to adopt Hangzhou Xing Yuan X
AZ30/800-U
BThe type pressure filter, by the automatic pressurize press filtration of hydraulicefficiency plant, press filtration water returns in the emulsion, tank liquor collecting tank of the first step; After handling, clod utilizes again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102910765A (en) * | 2012-11-20 | 2013-02-06 | 安徽新天环保科技有限公司 | Demulsifying and flocculating treatment method of machining cutting fluid sewage water |
| CN103055764A (en) * | 2013-01-31 | 2013-04-24 | 灵宝华鑫铜箔有限责任公司 | Activated carbon adding method in copper foil production |
| CN103896428A (en) * | 2014-01-28 | 2014-07-02 | 青岛新天地固体废物综合处置有限公司 | High-COD (chemical oxygen demand) and multi-variety waste emulsion breaking device and breaking method |
| CN105330095A (en) * | 2015-10-16 | 2016-02-17 | 安徽省巢湖铸造厂有限责任公司 | Regeneration reuse method for phosphorization wastewater |
| CN106186551A (en) * | 2016-08-25 | 2016-12-07 | 常州市锦云工业废弃物处理有限公司 | A kind of multipurpose wastewater treatment equipment processing equipment |
| CN106630246A (en) * | 2015-11-02 | 2017-05-10 | 张家港格林台科环保设备有限公司 | Waste emulsion demulsification processing method |
| CN107162301A (en) * | 2017-06-01 | 2017-09-15 | 冯合生 | Cutting fluid recovery and processing system and processing method |
| CN107176707A (en) * | 2017-06-26 | 2017-09-19 | 嘉兴英施特环保科技有限公司 | Machine cutting fluid waste liquid treatment for reuse technique and system |
| CN107601774A (en) * | 2017-10-18 | 2018-01-19 | 厦门东江环保科技有限公司 | High-concentration emulsified liquid processing method and processing system |
| CN108911014A (en) * | 2018-08-29 | 2018-11-30 | 苏州科特环保股份有限公司 | A kind of recyclable device and method of P containing sludge inhibitor |
| CN112607962A (en) * | 2020-12-04 | 2021-04-06 | 上海天汉环境资源有限公司 | Emulsion wastewater treatment method and system |
| CN113788584A (en) * | 2021-09-24 | 2021-12-14 | 惠州市吉邦精密技术有限公司 | Machining wastewater treatment method and industrial wastewater purification method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102910765A (en) * | 2012-11-20 | 2013-02-06 | 安徽新天环保科技有限公司 | Demulsifying and flocculating treatment method of machining cutting fluid sewage water |
| CN102910765B (en) * | 2012-11-20 | 2013-12-04 | 安徽新天环保科技有限公司 | Demulsifying and flocculating treatment method of machining cutting fluid sewage water |
| CN103055764A (en) * | 2013-01-31 | 2013-04-24 | 灵宝华鑫铜箔有限责任公司 | Activated carbon adding method in copper foil production |
| CN103896428A (en) * | 2014-01-28 | 2014-07-02 | 青岛新天地固体废物综合处置有限公司 | High-COD (chemical oxygen demand) and multi-variety waste emulsion breaking device and breaking method |
| CN105330095A (en) * | 2015-10-16 | 2016-02-17 | 安徽省巢湖铸造厂有限责任公司 | Regeneration reuse method for phosphorization wastewater |
| CN106630246A (en) * | 2015-11-02 | 2017-05-10 | 张家港格林台科环保设备有限公司 | Waste emulsion demulsification processing method |
| CN106186551A (en) * | 2016-08-25 | 2016-12-07 | 常州市锦云工业废弃物处理有限公司 | A kind of multipurpose wastewater treatment equipment processing equipment |
| CN107162301A (en) * | 2017-06-01 | 2017-09-15 | 冯合生 | Cutting fluid recovery and processing system and processing method |
| CN107176707A (en) * | 2017-06-26 | 2017-09-19 | 嘉兴英施特环保科技有限公司 | Machine cutting fluid waste liquid treatment for reuse technique and system |
| CN107601774A (en) * | 2017-10-18 | 2018-01-19 | 厦门东江环保科技有限公司 | High-concentration emulsified liquid processing method and processing system |
| CN108911014A (en) * | 2018-08-29 | 2018-11-30 | 苏州科特环保股份有限公司 | A kind of recyclable device and method of P containing sludge inhibitor |
| CN112607962A (en) * | 2020-12-04 | 2021-04-06 | 上海天汉环境资源有限公司 | Emulsion wastewater treatment method and system |
| CN113788584A (en) * | 2021-09-24 | 2021-12-14 | 惠州市吉邦精密技术有限公司 | Machining wastewater treatment method and industrial wastewater purification method |
| CN114477527A (en) * | 2022-01-14 | 2022-05-13 | 广东闻扬环境科技有限公司 | Workshop cleaning wastewater treatment method and system |
| CN116395920A (en) * | 2023-06-09 | 2023-07-07 | 成都硕特科技股份有限公司 | Oil removal device and oil removal method for coal chemical wastewater |
| CN116395920B (en) * | 2023-06-09 | 2023-09-05 | 成都硕特科技股份有限公司 | Oil removal device and oil removal method for coal chemical wastewater |
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