CN203890163U - Ozone/photocatalytic oxidation-membrane separation integrated device for advanced treatment of wastewater - Google Patents
Ozone/photocatalytic oxidation-membrane separation integrated device for advanced treatment of wastewater Download PDFInfo
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- CN203890163U CN203890163U CN201420273513.5U CN201420273513U CN203890163U CN 203890163 U CN203890163 U CN 203890163U CN 201420273513 U CN201420273513 U CN 201420273513U CN 203890163 U CN203890163 U CN 203890163U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 74
- 239000012528 membrane Substances 0.000 title claims abstract description 67
- 230000001699 photocatalysis Effects 0.000 title claims abstract description 45
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000000926 separation method Methods 0.000 title claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000000919 ceramic Substances 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 9
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims abstract 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 24
- 239000001301 oxygen Substances 0.000 claims description 17
- 229910052760 oxygen Inorganic materials 0.000 claims description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 16
- 238000011001 backwashing Methods 0.000 claims description 9
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 20
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- -1 hydroxyl radical free radical Chemical class 0.000 description 9
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- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
本实用新型涉及一种用于废水深度处理的臭氧/光催化氧化-膜分离集成装置，该装置按照废水的流向依次包括以下部件：气液混合器3，其用于将含有悬浮态纳米二氧化钛催化剂的废水与臭氧/氧气气体混合物进行混合；光催化反应器7，其具有废水入口和废水出口，且其内设有双波段紫外灯管8，该双波段紫外灯管8的第一段能发出波长为185nm的紫外光，第二段能发出波长为254nm的紫外光；陶瓷膜过滤器9，其内设有至少一个陶瓷膜组件，且其至少具有进水口、达标废水出口和浓水出口。本实用新型涉及的工艺及装置具有废水处理效率高、催化剂回收率高、臭氧利用效率高以及膜使用寿命长等优点。
The utility model relates to an ozone/photocatalytic oxidation-membrane separation integrated device for advanced treatment of wastewater. The device includes the following components in sequence according to the flow direction of wastewater: a gas-liquid mixer 3, which is used to mix suspended nano-titanium dioxide catalyst The waste water is mixed with the ozone/oxygen gas mixture; the photocatalytic reactor 7 has a waste water inlet and a waste water outlet, and a dual-band ultraviolet lamp 8 is arranged in it, and the first section of the dual-band ultraviolet lamp 8 can emit Ultraviolet light with a wavelength of 185nm, the second section can emit ultraviolet light with a wavelength of 254nm; ceramic membrane filter 9, which is equipped with at least one ceramic membrane module, and has at least a water inlet, a standard waste water outlet and a concentrated water outlet. The process and device involved in the utility model have the advantages of high waste water treatment efficiency, high catalyst recovery rate, high ozone utilization efficiency, long membrane service life and the like.
Description
Technical field
The utility model belongs to water-treatment technology field, particularly a kind of for waste water advanced processing ozone and photocatalysis oxidation-membrane sepn integrating device.
Background technology
Along with the modern industry, especially developing rapidly of the chemical industry such as organic chemical industry, petrochemical complex, dyestuff, medicine, agricultural chemicals, various organic wastewater with difficult degradation thereby are increasing, these waste water generally have the feature that Pollutant levels are high, toxicity is large, biodegradability is poor, severe contamination water body environment, are detrimental to health.This class trade effluent, after conventional materialization, biochemical treatment, still contains poisonous, bio-refractory organic pollutant in a large number in waste water, need further advanced treatment ability qualified discharge standard or reuse requirement.Therefore, exploitation advanced treatment of industrial waste water technology is significant to water-saving and emission-reducing and environment protection.
For this class organic wastewater with difficult degradation thereby, domestic and international existing treatment technology comprises enhanced biodegradation, coagulation, absorption, membrane sepn and high-level oxidation technology etc.Biological process processing speed is slow, needs larger process space, and high to entering water requirement, and water outlet is stable not, and low for some hardly degraded organic substance removal efficiency; Coagulation Method is low to wetting ability pollutent and small organic molecule removal efficiency; Absorption method has certain selectivity to pollutent, and needs adsorbent reactivation, has secondary pollution problem; Membrane technique can effectively be removed most of pollutent in water, but dense water treatment problems and membrane pollution problem restrict the application of this technology aspect wastewater treatment.
The very strong hydroxyl radical free radical oxidation water pollutant of oxidation capacity that high-level oxidation technology utilization produces, makes it through a series of pilot processs, finally generates CO
2with other mineral ion.High-level oxidation technology comprises catalytic ozonation, photochemical catalytic oxidation, Fenton oxidation, electrochemical oxidation, ultrasonic cavitation and supercritical oxidation etc.Photocatalysis oxidation technique is just receiving increasing concern as the effective waste water advanced treatment technology of one, photocatalytic oxidation all organic compound of almost can degrading, there is popularity, especially poisonous at bio-refractory, harmful organic pollutant process field, effect is remarkable, and do not produce secondary pollution, become gradually study hotspot.
Photocatalysis oxidation technique generally adopts TiO
2make catalyzer.Different according to the structure of the form of catalyzer and reactor, be divided into three kinds of plated film catalyzer photoreactor, filling type photo catalysis reactor and suspended state photo catalysis reactors, wherein suspended state photo catalysis reactor photocatalysis efficiency is the highest, is the subject matter of the existence of this reactor but powder photocatalyst reclaims difficulty.For this problem, Chinese patent (application number CN98111597.7) is developed the integrated approach of a kind of photochemical catalysis and membrane sepn, stir with circulating water flow effect and make catalyzer be suspended in photo catalysis reactor by diffusing air current, the logical filmed passing tube cross-flow mode of reacted suspension realizes solid-liquid separation, degrading waste water is penetrated into film pipe outside and discharges, catalyzer is got back to photo catalysis reactor with phegma and is continued to participate in reaction, but this technology adopts the mode of aeration that air, oxygen or ozone are provided, and the utilising efficiency of oxygenant is low.Chinese patent (application number CN200610129881.2) has proposed a kind of integrated photo-catalytic oxidation membrane-separation fluidized bed reactor, this device is by the design of a flow deflector of falling Z-type and three aeration zones, realize catalyzer internal recycle in system, by an immersion type membrane component, waste water after treatment is got rid of to reaction system simultaneously, aeration can cause the vibrations of film silk, dense water and catalyzer are got back to photocatalysis unit and are continued reaction, mass-transfer efficiency and light utilization efficiency are effectively improved, the tubular fibre organic membrane that this technology adopts, resistance of oxidation is poor, be not suitable for adding in photochemical catalysis system the reaction of ozone or hydrogen peroxide.Chinese patent (application number CN201310122072.9) proposes a kind of photochemical catalysis-membrane sepn coupling technique device and operation method thereof, the mode that adopts flat sheet membrane to be combined with photochemical catalysis, the flat sheet membrane that this technology adopts is organic membrane, resistance of oxidation is poor, be not suitable for adding in photochemical catalysis system the reaction of ozone or hydrogen peroxide, and membrane flux is lower.
Photocatalysis oxidation technique and membrane separation technique have advantage separately, but both are Shortcomings part also, the research of prior art is still in the starting stage, how better both advantages being organically combined, further improving the series of problems such as photocatalysis efficiency, raising membrane flux effective decelerating membrane pollution also needs further research.
Utility model content
The purpose of this utility model is to provide a kind of ozone and photocatalysis oxidation-membrane sepn integrated approach and device thereof for waste water advanced processing, thereby improve catalyzer and oxygenant utilising efficiency, improve the degradation efficiency of pollutent and alleviate film and pollute, extend the film replacement cycle.
In order to realize the purpose of this utility model, first aspect of the present utility model provides a kind of ozone and photocatalysis oxidation-membrane sepn integrated approach for waste water advanced processing, comprises the following steps:
A, the waste water that contains suspension nano titanium deoxide catalyst, ozone/oxygen gas gaseous mixture are jointly passed in gas liquid mixer and carry out gas-liquid mixed, to form a large amount of microbubbles, dissolved oxygen and dissolved ozone in waste water;
B, the waste water that leaves gas liquid mixer is passed in photo catalysis reactor, wherein in photochemical catalysis first paragraph, under the effect of 185nm ultraviolet radiation, dissolved oxygen is further converted to dissolved ozone, in photochemical catalysis second segment, under the effect of 254nm ultraviolet radiation, dissolved ozone is further converted to hydroxyl radical free radical, and in photochemical catalysis second segment under 254nm ultraviolet radiation and the effect of suspension nano titanium deoxide catalyst, using dissolved oxygen, dissolved ozone and hydroxyl radical free radical as oxygenant, by Organic Pollutants in Wastewater and inorganic pollutant oxidation removal;
C, the waste water that leaves photo catalysis reactor is carried out to filtration treatment by purpose ceramic-film filter, using the water outlet of permeation ceramic membrane strainer as discharge of wastewater up to standard, after the concentrated water drainage that contains suspension nano titanium deoxide catalyst of permeation ceramic membrane strainer is not gone out and mixing with fresh wastewater, turn back to above-mentioned steps A as the described waste water that contains suspension nano titanium deoxide catalyst, to realize recycling of described catalyzer.
In the preferred embodiment of this first aspect, by being passed into, oxygen in ozonizer, produces described ozone/oxygen gas gaseous mixture.
In another preferred embodiment of this first aspect, also in pending waste water, add hydrogen peroxide to promote the oxidation of described organic pollutant and inorganic pollutant.
In a preferred embodiment again of this first aspect, described waste water is before process processing of step A, first pass through coagulation, precipitation and multi-medium filtering pre-treatment step, to remove suspended substance, solid impurity etc. wherein, alleviate the working load of follow-up photo catalysis reactor and prevent alluvial and the obstruction of Waste Water Treatment.
In order to realize the purpose of this utility model, second aspect of the present utility model provides a kind of ozone and photocatalysis oxidation-membrane sepn integrating device for waste water advanced processing, and this device comprises with lower component successively according to the flow direction of waste water:
Gas liquid mixer 3, it is for mixing the waste water that contains suspension nano titanium deoxide catalyst with ozone/oxygen gas gaseous mixture;
Photo catalysis reactor 7, it has waterwater entrance and wastewater outlet, and in it, is provided with two waveband ultraviolet lamp tube 8, and the first paragraph of this two waveband ultraviolet lamp tube 8 can send the UV-light that wavelength is 185nm, and second segment can send the UV-light that wavelength is 254nm;
Purpose ceramic-film filter 9, is provided with at least one ceramic film component in it, and it at least has water-in, wastewater outlet up to standard and dense water out.
The device of realizing gas-liquid mixed of any general type that wherein said gas liquid mixer 3 is known for those skilled in the art, its inside generally has gas distributor or agitation means or Static Gas liquid mixer part etc.
Wherein said photo catalysis reactor 7 can be arranged to any suitable structure as the case may be by those skilled in the art.A kind of exemplary structure is, photo catalysis reactor 7 arranges tortuous multipass waste water flow passage, and two waveband ultraviolet lamp tube is enclosed in Transparent lamp shade and does not directly contact with waste water.
In the preferred embodiment of this second aspect, integrating device of the present utility model also comprises with lower component:
Ozonizer 4, its upstream connects oxygen cylinder 5, and its downstream is connected to described gas liquid mixer 3, and on gas tube, is optionally provided with intake valve 20 and gas meter 21;
Backwater storehouse 2, its upstream is communicated with the water storage 1 that fills pending waste water and is communicated with the dense water out of described purpose ceramic-film filter 9, and its downstream is communicated with described gas liquid mixer 3; In its waste water downstream pipeline, optionally there is back water pump 17, back-water valve 18 and circling water flow rate meter 19, in the pending waste line in its upstream, be optionally provided with water intaking valve 13, intake pump 14 and flooding velocity meter 15.
In another preferred embodiment of this second aspect, integrating device of the present utility model also comprises with lower component:
Air compressor machine 11;
Surge tank 10, its entrance is communicated with described air compressor machine 11, and its outlet is communicated with the wastewater outlet up to standard of described purpose ceramic-film filter 9;
And described purpose ceramic-film filter 9 also has back-flushing outlet;
The back-flushing export mixes back flushing circuit of above-mentioned air compressor machine 11, surge tank 10 and purpose ceramic-film filter 9, for carrying out back flushing to purpose ceramic-film filter.
In the another preferred embodiment of this second aspect, in integrating device of the present utility model, be provided with out successively water solenoid valve 22 and water flow meter 23 in the wastewater outlet up to standard downstream of described purpose ceramic-film filter 9 and go out sump 12.
In first aspect of the present utility model and second aspect, described ceramic film component is selected from the one in tubular ceramic membrane or ceramic membrane, and the mean pore size scope of ceramic membrane is 0.02～0.5 μ m.
The utility model has the advantage of:
(1) the advanced treatment of industrial waste water method that the utility model provides comprises a gas liquid mixer, can effectively improve the concentration of useless ozone in water and oxygen, is conducive to improve photocatalysis efficiency.
(2) a kind of two waveband ultraviolet lamp source that the utility model relates to, is divided into two wave bands of 185nm and 254nm, and the UV-light of different-waveband can be brought into play different effects, the generation of hydroxyl radical free radical in strengthening photocatalytic process.As the 185nm UV-light of leading portion can be ozone by oxygen conversion and hydrogen peroxide can be converted into hydroxyl radical free radical, the 254nm UV-light of back segment can transform hydrogen peroxide by ozone, and then is converted into hydroxyl radical free radical.The 254nm UV-light of back segment is at TiO
2catalyzer can electron-hole pair under existing, and under dissolved oxygen exists situation, further generates hydroxyl radical free radical.Hydroxyl radical free radical is very strong oxygenant, can be by organism in waste water for example various toxic pollutants, coloring matter, have smelly pollutent exhaustive oxidation to become carbonic acid gas, inorganic salt and water, the microorganism such as such as virus, bacterium thoroughly can also be killed, and the oxidable poisonous inorganics in waste water is converted into non-toxic substance, realize the removal to the hazardous and noxious substances in waste water.
(3) the utility model, by adding the oxygenant such as ozone and/or hydrogen peroxide, can decompose the organic pollutant that ceramic membrane surface forms, and effectively alleviates film and pollutes, and extends the film replacement cycle.
Brief description of the drawings
Fig. 1 is the schematic diagram of a kind of ozone and photocatalysis oxidation-membrane sepn integrating device for waste water advanced processing of the present utility model;
1-water storage; 2-backwater storehouse; 3-gas liquid mixer; 4-ozonizer; 5-oxygen cylinder; 6-barretter; 7-photo catalysis reactor; 8-two waveband ultraviolet lamp tube; 9-purpose ceramic-film filter; 10-surge tank; 11-air compressor machine; 12-goes out sump; 13-water intaking valve; 14-intake pump; 15-flooding velocity meter; 16-fluid level controller; 17-back water pump; 18-back-water valve; 19-circling water flow rate meter; 20-intake valve; 21-gas meter; 22-goes out water solenoid valve; 23-under meter; 24-exhaust solenoid valve; The 25-magnetic valve that recoils.
Embodiment
First by reference to the accompanying drawings the preferred integrating device of one of the present utility model is described in detail.This ozone and photocatalysis oxidation-membrane sepn integrating device that is used for waste water advanced processing comprises water storage 1, backwater storehouse 2, gas liquid mixer 3, ozonizer 4, oxygen cylinder 5, barretter 6, photo catalysis reactor 7, two waveband ultraviolet lamp tube 8, purpose ceramic-film filter 9, surge tank 10, air compressor machine 11 and goes out sump 12.Wherein, water storage 1 is connected with backwater storehouse 2 by suction culvert, suction culvert is provided with water intaking valve 13, intake pump 14, flooding velocity meter 15, backwater storehouse 2 upper openings, in backwater storehouse 2, be provided with fluid level controller 16, backwater storehouse 2 is connected with gas liquid mixer 3 water-ins by water return pipeline, water return pipeline is provided with back water pump 17, back-water valve 18 and circling water flow rate meter 19, the inlet mouth of gas liquid mixer 3 is connected with ozonizer 4 air outlets, oxygen cylinder 5 is through intake valve 20, gas meter 21 is connected with the inlet mouth of ozonizer 4, gas liquid mixer 3 outlets are connected with the import of photo catalysis reactor 7,
In photo catalysis reactor, place at least one two waveband ultraviolet lamp tube 8, described two waveband ultraviolet lamp tube 8 by can send wavelength be 185nm UV-light first paragraph and to send wavelength be that the second segment of the UV-light of 254nm forms, the region that wherein first paragraph UV-light can be radiated is called photochemical catalysis first paragraph, and the region that second segment UV-light can be radiated is called photochemical catalysis second segment.Seeing through barretter 6 powers to this two waveband ultraviolet lamp tube 8.This photochemical catalysis first paragraph and photochemical catalysis second segment can be spatially independent of each other, also can overlap wholly or in part.Wherein photo catalysis reactor 7 outlets are connected with the import of purpose ceramic-film filter 9, at least one ceramic-film tube is equipped with in purpose ceramic-film filter 9 inside, purpose ceramic-film filter 9 is provided with dense water out, and wherein dense water refers to the waste water that contains suspension nano titanium deoxide catalyst that does not see through this ceramic membrane.On this purpose ceramic-film filter 9, be also provided with wastewater outlet up to standard, waste water up to standard refers to the waste water of permeation ceramic membrane, does not wherein basically contain for example suspension nano titanium deoxide catalyst of any solid matter.Above-mentioned dense water out flow to backwater storehouse 2 through overrich water pipeline, and above-mentioned waste water up to standard flow to out sump 12 by outlet pipeline, and outlet pipeline is provided with out water solenoid valve 22 and under meter 23.In addition, the wastewater outlet up to standard of purpose ceramic-film filter 9 is connected to surge tank 10 by back flushing air pipeline, surge tank 10 is connected to venting port by exhaust line, exhaust line is provided with exhaust solenoid valve 24, surge tank 10 is also connected to air compressor machine 11 by back flushing air pipeline, and back flushing air pipeline is provided with recoil magnetic valve 25.Above-mentioned ozonizer, magnetic valve, water pump, barretter connect in PLC controller respectively, realize automatic intelligent control.
Embodiment 1
Adopt above-mentioned ozone and photocatalysis oxidation-membrane sepn integrating device for the treatment of the waste water containing vinyl cyanide, condition is as follows: former water COD=150mg/L, and pH=7.5, catalyzer is nano-TiO
2catalyst loading is 1.5g/L waste water, ultraviolet lamp power is 25W, fluorescent tube external diameter is 24mm, and fluorescent tube total length is 900mm, and 185nm wave band length is 600mm, 254nm wave band length is 300mm, oxygen flow is 1L/min, enters in the ozone/oxygen gas gaseous mixture of gas liquid mixer, and ozone concn is 46mg/L.In purpose ceramic-film filter, select tubular ceramic membrane, ceramic membrane mean pore size is 0.5 μ m, and transmembrane pressure is 0.2MPa, and it is 0.5MPa that Air Reverse rinses pressure, and backwashing period is 5min, and backwashing time is 10s, and evacuation time is 5s.The device that application the utility model relates to is processed acrylic nitrile waste water, and membrane flux is greater than 1000L/m
3h, solid catalyst rejection >99.9%, after processing 1h, effluent index is as follows: COD=74.4mg/L, pH=8.2, colourity <10 doubly, SS=4mg/L, in water outlet, suspended substance, pH, COD and chromaticity index meet first discharge standard in waste water comprehensive discharge standard (GB8978-96).
Embodiment 2
Adopt above-mentioned ozone and photocatalysis oxidation-membrane sepn integrating device for the treatment of coking chemical waste water, condition is as follows: former water COD=124mg/L, and pH=7.8, catalyzer is nano-TiO
2catalyst loading is 0.5g/L waste water, ultraviolet lamp power is 25W, fluorescent tube external diameter is 24mm, and fluorescent tube total length is 900mm, and 185nm wave band length is 450mm, 254nm wave band length is 450mm, oxygen flow is 1L/min, enters in the ozone/oxygen gas gaseous mixture of gas liquid mixer, and ozone concn is 1mg/L.In purpose ceramic-film filter, select tubular ceramic membrane, the mean pore size of ceramic membrane is 0.02 μ m, and transmembrane pressure is 0.3MPa, and it is 0.5MPa that Air Reverse rinses pressure, and backwashing period is 5min, and backwashing time is 10s, and evacuation time is 5s.The device Treatment of Wastewater in Coking that application the utility model relates to, membrane flux is greater than 300L/m
3h, solid catalyst rejection >99.98%, after processing 1h, effluent index is as follows: COD=72mg/L, pH=8.5, colourity <10 doubly, SS=2mg/L, in water outlet, suspended substance, pH, COD and chromaticity index meet first discharge standard in waste water comprehensive discharge standard (GB8978-96).
Embodiment 3
Adopt above-mentioned ozone and photocatalysis oxidation-membrane sepn integrating device for the treatment of paper waste, condition is as follows: former water COD=160mg/L, and pH=7.6, catalyzer is nano-TiO
2addition is 1.5g/L waste water, ultraviolet lamp power is 25W, fluorescent tube external diameter is 24mm, and fluorescent tube total length is 900mm, and 185nm wave band length is 300mm, 254nm wave band length is 600mm, oxygen flow is 1L/min, enters in the ozone/oxygen gas gaseous mixture of gas liquid mixer, and ozone concn is 46mg/L; Hydrogen peroxide is joined to water storage, and hydrogen peroxide addition is 0.01mol/L waste water.In purpose ceramic-film filter, select ceramic membrane, the mean pore size of ceramic membrane is 0.5 μ m, and transmembrane pressure is 0.15MPa, and it is 0.5MPa that Air Reverse rinses pressure, and backwashing period is 10min, and backwashing time is 15s, and evacuation time is 5s.The device Processing Paper Wastewater that application the utility model relates to, membrane flux >800L/m
3h, solid catalyst rejection >99.9%, after processing 1h, effluent index is as follows: COD=69.8mg/L, pH=7.8, colourity <10 doubly, SS=5mg/L, in water outlet, suspended substance, pH, COD and chromaticity index effluent quality meet first discharge standard in pulp and paper industry pollution discharge standard (GB3544-2008).
Embodiment 4
Adopt above-mentioned ozone and photocatalysis oxidation-membrane sepn integrating device for the treatment of dyeing waste water, condition is as follows: former water COD=120mg/L, and pH=6.3, catalyzer is nano-TiO
2addition is 0.5g/L waste water, ultraviolet lamp power is 25W, fluorescent tube external diameter is 24mm, and fluorescent tube total length is 900mm, and 185nm wave band length is 800mm, 254nm wave band length is 100mm, oxygen flow is 2L/min, enters in the ozone/oxygen gas gaseous mixture of gas liquid mixer, and ozone concn is 1mg/L; Hydrogen peroxide is joined to water storage, and hydrogen peroxide addition is 0.03mol/L waste water.In purpose ceramic-film filter, select ceramic membrane, the mean pore size of ceramic membrane is 0.2 μ m, and transmembrane pressure is 0.15MPa, and it is 0.5MPa that Air Reverse rinses pressure, and backwashing period is 10min, and backwashing time is 15s, and evacuation time is 5s.The device treatment of dyeing and printing that application the utility model relates to, membrane flux >700L/m
3h, solid catalyst rejection >99.9%, after processing 1h, effluent index is as follows: COD=42.5mg/L, pH=7.2, colourity <10 doubly, SS=4.2mg/L, in water outlet, suspended substance, pH, COD and chromaticity index effluent quality meet first discharge standard in waste water comprehensive discharge standard (GB8978-96).
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| CN104016511A (en) * | 2014-05-27 | 2014-09-03 | 轻工业环境保护研究所 | Ozone / photocatalysis oxidation-membrane separation integrated method and integrated set for advanced wastewater treatment |
| CN104803512A (en) * | 2015-04-21 | 2015-07-29 | 大连理工大学 | Ozone catalytic oxidation and self-cleaning ceramic membrane combined water treatment method and device |
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| WO2021134875A1 (en) * | 2019-12-30 | 2021-07-08 | 北京高能时代环境技术股份有限公司 | Wastewater treatment device and treatment process for organic contaminated site |
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| CN114573160A (en) * | 2020-11-30 | 2022-06-03 | 中国石油化工股份有限公司 | Treatment and recycling method of cold coke wastewater |
| CN114573160B (en) * | 2020-11-30 | 2024-09-24 | 中国石油化工股份有限公司 | A method for treating and reusing cold coke wastewater |
| CN114516673A (en) * | 2022-01-12 | 2022-05-20 | 浙江万里学院 | Plane tube type continuous flow-photocatalytic oxidation degradation water treatment device, system and method |
| CN114772678A (en) * | 2022-01-12 | 2022-07-22 | 浙江万里学院 | Cylindrical spiral tube type continuous flow-photocatalytic oxidation degradation water treatment device, system and method |
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