CN104944693A - Method and device for purifying and treating chemical industrial wastewater - Google Patents
Method and device for purifying and treating chemical industrial wastewater Download PDFInfo
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Abstract
The invention discloses a method for purifying and treating chemical industrial wastewater. The method comprises the following steps: (1) adopting homogenization and neutralization measures to pre-treat the chemical industrial wastewater; (2) conducting biochemical treatment on the chemical industrial wastewater; (3) conducting physicochemical treatment on the chemical industrial wastewater; (4) conducting ozone treatment on the chemical industrial wastewater; (5) conducting water outlet adjustment discharge. A device for purifying and treating the chemical industrial wastewater comprises a sewage pump, a water distribution well, an equalization tank and a neutralization tank of a pretreatment unit, an oxygen deficiency tank, an aeration tank and a secondary sedimentation tank of a biochemical treatment unit, a coagulation tank, a flocculation tank and an air floatation tank of a physicochemical treatment unit, an ozone contact tank, an ozone generator and an ozone destruction device of an ozone treatment unit, and a water outlet adjustment tank of a water outlet adjustment unit. The device is suitable for treating the chemical industrial wastewater, with large water quality fluctuation, high toxicity and complex chromaticity source, of petrochemical industrial enterprises, and can specifically put the method into practice. The method and the device are better in purifying and treating the hardly degradable chemical industrial wastewater at present.
Description
Technical field
The present invention relates to technical field of waste water processing, specifically, is a kind of purifying treatment method and purifying processing device thereof of wastewater from chemical industry.
Background technology
The wastewater from chemical industry about 20,000m that certain Chemical spectrography day produces
3/ d, described wastewater from chemical industry is mainly from petrochemical industry enterprise, and its principal character is that chemical oxygen demand (COD) (COD) is high, salinity is high, colourity is high, toxicity is large, biological degradability is poor, belongs to the wastewater from chemical industry of more typical difficult degradation at present.
At present, mainly contain two classes: a class is physicochemical treatment method to the treatment process that described wastewater from chemical industry adopts, another kind of is biological treatment.Wherein, the treatment effect of physicochemical treatment method is better, and not by the impact of wastewater from chemical industry hazardous and noxious substances, but cost is high.And the biological treatment at present still traditional biochemical process adopted, although its technique cost is lower, after process, wastewater from chemical industry is difficult to stable and up to standard, and meanwhile, the technique of conventional biochemical method is larger by the impact of Organic loading shock. more
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of purifying treatment method of wastewater from chemical industry, it can carry out purifying treatment to wastewater from chemical industry effectively.Another object of the present invention is, provides the purifying processing device matched with described purifying treatment method, described purifying treatment method specifically can be implemented one by one, effectively purifying treatment wastewater from chemical industry.
For achieving the above object, this invention takes following technical scheme.
A purifying treatment method for wastewater from chemical industry, is characterized in that, comprises following steps:
(1) adopt homogenizing and in and measure pre-treatment is carried out to wastewater from chemical industry
Wastewater from chemical industry is inputted pretreatment unit by distributing well, and described wastewater from chemical industry is from petrochemical industry enterprise, and variation water quality is large, toxicity is high, colourity source is complicated;
Described pretreatment unit comprises balancing reservoir and neutralization tank; Adopt the measure of homogenizing and neutralization to carry out pre-treatment to wastewater from chemical industry, wastewater from chemical industry influent quality is homogenized, reduces the change in concentration of the wastewater from chemical industry being caused downstream processing by the wastewater from chemical industry newly introduced;
(2) biochemical treatment is carried out to wastewater from chemical industry
By pretreated for step (1) wastewater from chemical industry input biochemical treatment unit, described biochemical treatment unit comprises anoxic pond, aeration tank and second pond, adopts anoxic and aerobic process to improve the BOD of wastewater from chemical industry
5with COD value, the degradability of the follow-up aerobic treatment of wastewater from chemical industry is improved; Part COD and colourity can also be removed, reduce the load of subsequent disposal;
(3) materializing strategy is carried out to wastewater from chemical industry
Will through the wastewater from chemical industry input physicochemical treatment unit of step (2) biochemical treatment, described physicochemical treatment unit comprises coagulation basin, flocculation basin and air flotation pool; Coagulation-flocculation-dissolved air flotation process is adopted to process wastewater from chemical industry: in described coagulation basin, to add iron trichloride, rapid stirring 5 ~ 8 minutes; PAM is added, stirring at low speed 10 ~ 20 minutes in described flocculation basin; Described air flotation pool adopts air-dissolving air-float mode;
(4) ozonize is carried out to wastewater from chemical industry
Will through the wastewater from chemical industry input ozonize unit of step (3) materializing strategy, described ozonize unit comprises ozone gas distribution system in ozone contact tank and ozone contact tank and ozonizer and ozone destruct device; Be supplied to ozone contact tank by ozonizer generates ozone, its source of the gas is air or pure oxygen; Described wastewater from chemical industry stops 20 ~ 40 minutes in totally enclosed ozone contact tank: ozone gas to be drawn in water sprayer by pressurized water and to mix with pressurized water by the ozone gas distribution system in ozone contact tank, again mixed pressurized water is squeezed into ozone contact tank by spoke stream aerator to mix with wastewater from chemical industry, remove COD and colourity further by ozonize unit;
(5) water outlet regulates discharge
Wastewater from chemical industry after step (4) ozonize is introduced water outlet regulon, and water outlet regulon contains water outlet equalizing tank, the discharge of wastewater from chemical industry after the laggard row relax of pH value regulating waste water.
Further, the pH value adding sulfuric acid or sodium hydroxide adjustment wastewater from chemical industry in described neutralization tank is 6 ~ 9, avoids wastewater from chemical industry to produce biochemical treatment unit below and impacts.
Further, control at below 0.2mg/L by the dissolved oxygen in described biochemical treatment unit anoxic pond, wastewater from chemical industry stops 1 ~ 4 hour in anoxic pond; By the Dissolved Oxygen concentration Control in aeration tank at 2 ~ 4mg/L, wastewater from chemical industry stops 18 ~ 36 hours in aeration tank; The dissolved oxygen of second pond sludge concentration is controlled at 4000 ~ 6000mg/L.
Further, the mud of described second pond can be back to described anoxic pond and continue process, and reflux ratio is 100 ~ 200% of flooding velocity.
Further, in the biochemical treatment stage, if when containing a large amount of pollutent to the toxic effect of microorganism in wastewater from chemical industry, the microorganism of reply biochemical treatment carries out acclimation.
Further, the ozone tail gas of described ozone contact tank is pumped to malleation by blower fan, first removes the ozone in ozone tail gas by ozone destruct device thermal degradation, and the aeration tank oxygen as a supplement then tail gas being back to biochemical treatment unit continues to utilize.
For achieving the above object, this invention takes following technical scheme.
A kind of purifying processing device of wastewater from chemical industry, containing sump pump and distributing well, pretreatment unit, biochemical treatment unit, physicochemical treatment unit, ozonize unit and water outlet regulon, be applicable to process large from petrochemical industry enterprise variation water quality, toxicity is high, the wastewater from chemical industry that colourity source is complicated, it is characterized in that, described pretreatment unit comprises balancing reservoir and neutralization tank, described biochemical treatment unit comprises anoxic pond, aeration tank and second pond, described physicochemical treatment unit comprises coagulation basin, flocculation basin and air flotation pool, described ozonize unit comprises ozone contact tank and ozonizer and ozone destruct device, described water outlet regulon contains water outlet equalizing tank, described wastewater from chemical industry is promoted to balancing reservoir through distributing well and sump pump, then successively through neutralization tank, anoxic pond, aeration tank, second pond, coagulation basin, flocculation basin and air flotation pool, ozone contact tank, and discharge after regulating finally by water outlet equalizing tank.
Further, described balancing reservoir is paste anticorrosive tile structure in steel reinforced concrete pool body, is provided with agitator and is configured with gas blower in balancing reservoir.
Further, described ozone contact tank is totally enclosed skeleton construction, is connected respectively by pipeline with described ozonizer and described ozone destruct device, is provided with ozone gas distribution system in described ozone contact tank.
Further, described by ozonizer with air or pure oxygen for source of the gas produces ozone.
Positively effect of the present invention is:
(1) anoxic and aerobic process is adopted at biochemical treatment unit, in anoxic pond, the suspended contaminant such as the starch in sewage, fiber, carbohydrate and dissolved organic matter can be hydrolyzed to organic acid by heterotrophic bacterium, insoluble organism are changed into dissolved organic matter, can improve the BOD of waste water
5/ COD value, makes the degradability of the wastewater from chemical industry entering follow-up aerobic treatment improve; The load of subsequent disposal can also be reduced after eliminating part colourity and organism.
(2) due to the organism that colour developing groups a large amount of in wastewater from chemical industry is complicated, adopting acidication to carry out process can transfer some larger molecular organicses to small molecules, is conducive to the removal of colourity.
(3) after materializing strategy, ozonize is added, water sprayer and the utilising efficiency of spoke stream aerator raising to ozone are set in ozone contact tank, by the effect of ozone, the colourity of waste water and organism are removed further, make the process of wastewater from chemical industry more effective; In addition, the tail gas energy reuse after ozonize, to the aeration tank of biochemical treatment unit, significantly reduces processing cost, improves the efficiency of chemical wastewater treatment.
(4) be the good purifying treatment method of one and the device of the wastewater from chemical industry processing difficult degradation at present.
Accompanying drawing explanation
Fig. 1 is the structural representation sketch of the purifying processing device of a kind of wastewater from chemical industry of the present invention.
Embodiment
Continue to introduce the purifying treatment method of a kind of wastewater from chemical industry of the present invention and the specific implementation process of device thereof below in conjunction with accompanying drawing, 3 embodiments are provided.But it is noted that enforcement of the present invention is not limited to following embodiment.
embodiment 1
A purifying treatment method for wastewater from chemical industry, comprises following steps:
(1) adopt homogenizing and in and measure pre-treatment is carried out to wastewater from chemical industry
Pretreated facility comprises balancing reservoir 2 and neutralization tank 3.Described balancing reservoir 2 is paste anticorrosive tile structure in steel reinforced concrete pool body, described pre-treatment can arrange 1 balancing reservoir 2, in described balancing reservoir 2, an Invent agitator be installed and configure a gas blower, its effect wastewater from chemical industry influent quality is homogenized and keeps certain oxygen concn, avoids vitriol (SO
4 2-) be reduced into sulfide, also reduce the change in concentration of the wastewater from chemical industry being caused downstream processing by the wastewater from chemical industry newly introduced simultaneously.
Adopt large from petrochemical industry enterprise variation water quality, that toxicity is high, colourity source is complicated wastewater from chemical industry; By sump pump, wastewater from chemical industry is promoted to distributing well 1, then flows into the balancing reservoir 2 of pretreatment unit, the combined sewage homogenized through water quality is sent to the neutralization tank 3 of pretreatment unit.
If needed, sulfuric acid or sodium hydroxide can be added to regulate the pH value of wastewater from chemical industry for 6 ~ 9 in described neutralization tank 3, avoid wastewater from chemical industry to produce impact to biochemical treatment unit below.
Water quality through the wastewater from chemical industry of homogenizing and Pre process is: COD400 ~ 800mg/L, BOD
5200 ~ 400mg/L, colourity 300 ~ 1000 degree (Pt-Co).
(2) biochemical treatment is carried out to wastewater from chemical industry
The facility of biochemical treatment comprises anoxic pond 4, aeration tank 5 and second pond 6.Stirrer and aerator system are set in described aeration tank 5.Be provided with spoke stream inhaling type mud-scraping bridge, air lift system and mud in described second pond and receive mud-collecting well.
Wastewater from chemical industry pretreated for step (1) is relied on the anoxic pond 4 of gravity successively input biochemical treatment unit, aeration tank 5 and second pond 6, if time in wastewater from chemical industry containing a large amount of pollutent to the toxic effect of microorganism, the microorganism of reply biochemical treatment carries out acclimation; Anoxic and aerobic process is adopted to improve the BOD of wastewater from chemical industry
5with COD value: the dissolved oxygen in described anoxic pond 4 is controlled at below 0.2mg/L, not aeration, wastewater from chemical industry is stopped 2 hours in anoxic pond 4.
Under the effect of anoxic pond 4 exit pump, wastewater from chemical industry is sent into aeration tank 5, the stirrer in aeration tank 5 and aerator system provide and suspend and homo-effect, provide dissolved oxygen simultaneously; Dissolved Oxygen concentration Control in aeration tank 5 can be monitored the oxygen concn in water with dissolved oxygen detector at 3mg/L(), make wastewater from chemical industry stop 18 hours in aeration tank 5.
By the wastewater from chemical industry after processing through aeration tank 5 by carrying out solid-liquid separation in transport pipe input second pond 6, the concentration of second pond 6 active sludge is controlled at 5000mg/L: wastewater from chemical industry stops 16 hours in second pond 6, muddy water is separated by deadweight, mud precipitates at the bottom of second pond 6 pond, mud is also collected in the mud well of second pond 6 by air lift system by the mud that the mud-scraping bridge energy quick collection in second pond 6 precipitates, be back to described anoxic pond 4 again and continue process, reflux ratio is 100% of flooding velocity.Supernatant liquid after separation enters next processing unit.
(3) materializing strategy is carried out to wastewater from chemical industry
The facility of materializing strategy comprises coagulation basin 7, flocculation basin 8 and air flotation pool 9.
(wastewater from chemical industry) supernatant liquid after step (2) biochemical treatment is flowed into the coagulation basin 7 of physicochemical treatment unit by deadweight, iron trichloride is added at described coagulation basin 7, stir 5 minutes with 120 revs/min, make fluid, colloid and suspended solids de-steady, produce little alumen ustum.
Waste water after coagulation flows into flocculation basin 8, adds PAM at described flocculation basin 8, stirs 15 minutes with 20 revs/min, is assembled by little alumen ustum for larger, more all even firmly alumen ustum.
Described air flotation pool 9 adopts air-dissolving air-float mode.Dissolving operating pressure is about 6bar, dissolves in air Injection dissolving in water, then the water containing saturated air is delivered to the entrance of described air flotation pool 8 by a pressure-release assembly, forms the alumen ustum of 50 ~ 80 microns.Wastewater from chemical industry enters air flotation pool 9 after mixing with the pressure water of air-saturated microvesicle, and alumen ustum and air micro-bubbles flock together, and forms uniform mud cake.Deliver to sludge treating block after bed mud and mud cake being collected to process.By primary water surface overflow collection.
(4) ozonize is carried out to wastewater from chemical industry
The facility of ozonize comprises ozone contact tank 10 and ozonizer 11 and ozone destruct device 12.Described ozone contact tank 10 is totally enclosed skeleton construction, and it is connected with described ozonizer 11 and described ozone tail gas breaking plant 12 respectively by pipeline.Ozone gas distribution system is provided with in described ozone contact tank 10.Described by ozonizer 11 with air or pure oxygen for source of the gas produces ozone.
Will through the ozone contact tank 10 of the primary water on air flotation pool 9 surface of step (3) materializing strategy by transport pipe input ozonize unit, provide ozone by ozonizer 11, the dosage of ozone is about 22g ozone/m
3waste water.The primary water on described air flotation pool 9 surface is stopped 20 minutes in described ozone contact tank 10: ozone gas to be drawn in water sprayer by pressurized water and to mix with pressurized water by the ozone gas distribution system in ozone contact tank 10, again mixed pressurized water is squeezed into ozone contact tank 10 by spoke stream aerator to mix with wastewater from chemical industry, remove COD and colourity by ozonization.
In ozone contact tank 10, reacted tail gas is pumped to malleation by blower fan: first removed by remaining ozone by the heat catalysis of ozone destruct device 12, then aeration tank 5 oxygen as a supplement tail gas being back to biochemical treatment unit continues to utilize, and can supplement 40 ~ 80% of described aeration tank 5 aeration rate.
(5) water outlet regulates discharge
The facility that water outlet regulates is mainly water outlet equalizing tank 13.
Wastewater from chemical industry after step (4) ozonize is introduced the water outlet equalizing tank 13 of water outlet regulon, after regulating waste water ph, carry out the discharge of wastewater from chemical industry.
To the detected result of the wastewater from chemical industry of discharge after process.
Adopt national standard water quality detection method to detect the wastewater from chemical industry that embodiment 1 processes rear discharge, detected result is: pH value is between 6 ~ 9, and COD is less than 100mg/L, and TOC is less than 30mg/L, and ammonia nitrogen is less than 15mg/L, and total nitrogen is less than 30mg/L.Meet existing relevant emission standard.
embodiment 2
A purifying treatment method for wastewater from chemical industry, substantially with embodiment 1.But embodiment 2 and embodiment 1 difference are:
(1) adopt homogenizing and in and measure pre-treatment (with embodiment 1) is carried out to wastewater from chemical industry.
(2) biochemical treatment is carried out to wastewater from chemical industry
Wastewater from chemical industry is stopped 1 hour in anoxic pond 4.
By the Dissolved Oxygen concentration Control in aeration tank 5 at 2mg/L, wastewater from chemical industry is made to stop 25 hours in aeration tank 5.
The concentration of second pond 6 active sludge is controlled at 4000mg/L.
The reflux ratio continuing process in second pond 6 in sludge reflux to anoxic pond 4 is 150% of flooding velocity.
(3) materializing strategy is carried out to wastewater from chemical industry
In coagulation basin 7, add iron trichloride, stir 6 minutes with 120 revs/min, make fluid, colloid and suspended solids de-steady, produce little alumen ustum.
Add PAM at flocculation basin 8, stir 10 minutes with 20 revs/min, little alumen ustum is assembled for larger, more all even firmly alumen ustum.
(4) ozonize is carried out to wastewater from chemical industry
The primary water on described air flotation pool 9 surface is stopped 30 minutes in described ozone contact tank 10.
(5) water outlet regulates discharge (with embodiment 1).
embodiment 3
A purifying treatment method for wastewater from chemical industry, substantially with embodiment 1.But embodiment 3 and embodiment 1 difference are:
(1) adopt homogenizing and in and measure pre-treatment (with embodiment 1) is carried out to wastewater from chemical industry.
(2) biochemical treatment is carried out to wastewater from chemical industry
Wastewater from chemical industry is stopped 4 hours in anoxic pond 4.
By the Dissolved Oxygen concentration Control in aeration tank 5 at 4mg/L, wastewater from chemical industry is made to stop 36 hours in aeration tank 5.
The concentration of second pond 6 active sludge is controlled at 6000mg/L.
The reflux ratio continuing process in second pond 6 in sludge reflux to anoxic pond 4 is 200% of flooding velocity.
(3) materializing strategy is carried out to wastewater from chemical industry
In coagulation basin 7, add iron trichloride, stir 8 minutes with 120 revs/min, make fluid, colloid and suspended solids de-steady, produce little alumen ustum.
Add PAM at flocculation basin 8, stir 20 minutes with 20 revs/min, little alumen ustum is assembled for larger, more all even firmly alumen ustum.
(4) ozonize is carried out to wastewater from chemical industry
The primary water on described air flotation pool 9 surface is stopped 40 minutes in described ozone contact tank 10.
(5) water outlet regulates discharge (with embodiment 1).
Claims (10)
1. a purifying treatment method for wastewater from chemical industry, is characterized in that, comprises following steps:
(1) adopt homogenizing and in and measure pre-treatment is carried out to wastewater from chemical industry
By wastewater from chemical industry by distributing well (1) input pretreatment unit, described wastewater from chemical industry is from petrochemical industry enterprise, and variation water quality is large, toxicity is high, colourity source is complicated;
Described pretreatment unit comprises balancing reservoir (2) and neutralization tank (3); Adopt the measure of homogenizing and neutralization to carry out pre-treatment to wastewater from chemical industry, wastewater from chemical industry influent quality is homogenized, reduces the change in concentration of the wastewater from chemical industry being caused downstream processing by the wastewater from chemical industry newly introduced;
(2) biochemical treatment is carried out to wastewater from chemical industry
By pretreated for step (1) wastewater from chemical industry input biochemical treatment unit, described biochemical treatment unit comprises anoxic pond (4), aeration tank (5) and second pond (6), adopts anoxic and aerobic process to improve the BOD of wastewater from chemical industry
5with COD value, the degradability of the follow-up aerobic treatment of wastewater from chemical industry is improved; Part COD and colourity can also be removed, reduce the load of subsequent disposal;
(3) materializing strategy is carried out to wastewater from chemical industry
Will through the wastewater from chemical industry input physicochemical treatment unit of step (2) biochemical treatment, described physicochemical treatment unit comprises coagulation basin (7), flocculation basin (8) and air flotation pool (9); Coagulation-flocculation-dissolved air flotation process is adopted to process wastewater from chemical industry: in described coagulation basin (7), to add iron trichloride, rapid stirring 5 ~ 8 minutes; PAM is added, stirring at low speed 10 ~ 20 minutes in described flocculation basin (8); Described air flotation pool (9) adopts air-dissolving air-float mode;
(4) ozonize is carried out to wastewater from chemical industry
Will through the wastewater from chemical industry input ozonize unit of step (3) materializing strategy, described ozonize unit comprises ozone gas distribution system in ozone contact tank (10) and ozone contact tank (10) and ozonizer (11) and ozone destruct device (12); Produce ozone by ozonizer (11) and be supplied to ozone contact tank (10), its source of the gas is air or pure oxygen; Described wastewater from chemical industry stops 20 ~ 40 minutes in totally enclosed ozone contact tank (10): ozone gas to be drawn in water sprayer by pressurized water and to mix with pressurized water by the ozone gas distribution system in ozone contact tank (10), again mixed pressurized water is squeezed into ozone contact tank (10) by spoke stream aerator to mix with wastewater from chemical industry, remove COD and colourity further by ozonize unit;
(5) water outlet regulates discharge
Wastewater from chemical industry after step (4) ozonize is introduced water outlet regulon, and water outlet regulon contains water outlet equalizing tank (13), the discharge of wastewater from chemical industry after the laggard row relax of pH value regulating waste water.
2. the purifying treatment method of a kind of wastewater from chemical industry according to claim 1, it is characterized in that, the pH value adding sulfuric acid or sodium hydroxide adjustment wastewater from chemical industry in described neutralization tank (3) is 6 ~ 9, avoids wastewater from chemical industry to produce biochemical treatment unit below and impacts.
3. the purifying treatment method of a kind of wastewater from chemical industry according to claim 1, it is characterized in that, control at below 0.2mg/L by the dissolved oxygen in described biochemical treatment unit anoxic pond (4), wastewater from chemical industry stops 1 ~ 4 hour in anoxic pond (4); By the Dissolved Oxygen concentration Control in aeration tank (5) at 2 ~ 4mg/L, wastewater from chemical industry stops 18 ~ 36 hours in aeration tank (5); The dissolved oxygen of second pond (6) sludge concentration is controlled at 4000 ~ 6000mg/L.
4. the purifying treatment method of a kind of wastewater from chemical industry according to claim 3, is characterized in that, the mud of described second pond (6) can be back to described anoxic pond (4) and continue process, and reflux ratio is 100 ~ 200% of flooding velocity.
5. the purifying treatment method of a kind of wastewater from chemical industry according to claim 1, is characterized in that, in the biochemical treatment stage, if in wastewater from chemical industry containing a large amount of pollutent to the toxic effect of microorganism time, the microorganism of reply biochemical treatment carries out acclimation.
6. the purifying treatment method of a kind of wastewater from chemical industry according to claim 1, it is characterized in that, the ozone tail gas of described ozone contact tank (10) is pumped to malleation by blower fan, first remove the ozone in ozone tail gas by ozone destruct device (12) thermal degradation, aeration tank (5) oxygen as a supplement then tail gas being back to biochemical treatment unit continues to utilize.
7. the purifying processing device of a wastewater from chemical industry, containing sump pump and distributing well (1), pretreatment unit, biochemical treatment unit, physicochemical treatment unit, ozonize unit and water outlet regulon, be applicable to process large from petrochemical industry enterprise variation water quality, toxicity is high, the wastewater from chemical industry that colourity source is complicated, it is characterized in that, described pretreatment unit comprises balancing reservoir (2) and neutralization tank (3), described biochemical treatment unit comprises anoxic pond (4), aeration tank (5) and second pond (6), described physicochemical treatment unit comprises coagulation basin (7), flocculation basin (8) and air flotation pool (9), described ozonize unit comprises ozone contact tank (10) and ozonizer (11) and ozone destruct device (12), described water outlet regulon contains water outlet equalizing tank (13), described wastewater from chemical industry is promoted to balancing reservoir (2) through distributing well (1) and sump pump, then successively through neutralization tank (3), anoxic pond (4), aeration tank (5), second pond (6), coagulation basin (7), flocculation basin (8) and air flotation pool (9), ozone contact tank (10), discharge after regulating finally by water outlet equalizing tank (13).
8. the purifying processing device of a kind of wastewater from chemical industry according to claim 7, it is characterized in that, described balancing reservoir (2), for pasting the structure of anticorrosive tile in steel reinforced concrete pool body, is provided with agitator and is configured with gas blower in balancing reservoir.
9. the purifying processing device of a kind of wastewater from chemical industry according to claim 7, it is characterized in that, described ozone contact tank (10) is totally enclosed skeleton construction, be connected with described ozonizer (11) and described ozone destruct device (12) respectively by pipeline, in described ozone contact tank (10), be provided with ozone gas distribution system.
10. the purifying processing device of a kind of wastewater from chemical industry according to claim 9, is characterized in that, described by ozonizer (11) with air or pure oxygen for source of the gas produces ozone.
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Application publication date: 20150930 |