CN111470676A - System and method for treating industrial wastewater by ozone ceramic membrane coupling oxidation technology - Google Patents
System and method for treating industrial wastewater by ozone ceramic membrane coupling oxidation technology Download PDFInfo
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Abstract
The invention relates to the technical field of sewage treatment, in particular to an ozone ceramic membrane coupling oxidation technology treatment industryThe system and the method for the wastewater jointly use the advantages of the advanced oxidation technology, couple the ceramic membrane separation technology, oxidize the pollutants which are difficult to biodegrade in the wastewater by the ozone-iron carbon electrolysis in coordination, oxidize the organic matters into carbon dioxide and water or the organic matters which are easy to degrade, provide Fe as a catalyst for the ozone oxidation technology, provide a catalyst for the ozone oxidation by the ceramic membrane component aluminum oxide, and accelerate the reaction rate of the ozone oxidation; the ozone can oxidize organic matters on the surface of the ceramic membrane and in the ceramic membrane pores while oxidizing the organic matters in the sewage, so as to prevent the ceramic membrane from being blocked; fe ions generated in the process of the iron-carbon microelectrode can be directly mixed with added H2O2The Fenton oxidation reaction is generated, and the medicament of adding iron salt required by the Fenton technology is saved; the multiple sewage treatment coupled oxidation technologies effectively overcome the defect of low removal rate of a single technology.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a system and a method for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology.
Background
The industrial wastewater mostly contains refractory organic matters, including polycyclic aromatic compounds, benzene series, long-chain macromolecules, heterocycles and the like. The waste water is typical in the industries of paper making, coal chemical industry, pharmacy, petrochemical industry, textile printing and dyeing and the like.
The catalyst is difficult to biodegrade, and the prior adopted process has advanced oxidation, such as ozone oxidation, electrochemical catalytic oxidation, Fenton oxidation and the like, but different technologies have limitations in the application process, such as selective oxidation of ozone oxidation and higher operation cost; the development of electrocatalytic oxidation is also limited due to the high energy consumption, easy scaling of the electrode plate and the like. The fenton technology is also greatly limited in its wide application due to the large amount of iron sludge produced, the need for treatment, the high running cost, and the like. If the technologies are used in series, the problems of long technical process, high processing cost, complex management and the like are caused. Therefore, how to utilize advanced oxidation technology to improve the treatment efficiency of wastewater difficult to treat and effectively reduce the treatment cost is the direction of research and development in the industry.
Disclosure of Invention
In order to solve the technical problems, the invention provides an effective system for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology for wastewater difficult to treat, and the system combines the advantages of the existing advanced oxidation technology and a ceramic membrane separation technology, thereby reducing the treatment cost and improving the treatment efficiency.
In order to realize the purpose, the invention is realized by adopting the following technical scheme:
the utility model provides a system for industrial waste water is handled to ozone ceramic membrane coupling oxidation technology, includes ozone generator, reaction tank 1, reaction tank 2, inclined plate sedimentation tank and clean water basin, ozone generator pass through the ejector with reaction tank 1 connects, the upper portion of reaction tank 1 is provided with the iron carbon electrode, and the lower part is provided with ceramic diaphragm, reaction tank 1 through the pipeline in proper order with reaction tank 2, inclined plate sedimentation tank and clean water basin connect, industrial waste water realizes purifying up to standard from reaction tank 1 through reaction tank 2, inclined plate sedimentation tank and clean water basin under the vacuum pump effect.
In a preferred technical scheme, the ejector is connected with the bottom of the reaction tank 1, and sewage enters the reaction tank 1 from the top.
A method for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology comprises the following steps:
s1: adjusting the pH value of the wastewater, and feeding the wastewater into the reaction tank 1 from the top through a pipeline;
s2: the ozone generator generates ozone, negative pressure is formed by an air cavity in the ejector under the action of high-speed water flow to suck in ozone gas, the high-speed water flow crushes the ozone gas to form micro bubbles which are fully contacted and mixed with water, and the micro bubbles enter from the bottom of the reaction tank 1;
s3: performing oxidation treatment on pollutants difficult to biodegrade in the sewage by ozone-iron carbon electrolysis in a synergistic manner, and oxidizing organic matters into carbon dioxide and water or organic matters easy to degrade; the wastewater flows to the bottom of the reaction tank 1 from top to bottom and enters the ceramic membrane through the ceramic membrane, and the pollutants in the wastewater are further removed in the process of passing through the aperture of the ceramic membrane by ozone in the wastewater under the catalysis of aluminum oxide;
s4: pumping sewage from the reaction tank 1 into the reaction tank 2 by a vacuum pump, adding hydrogen peroxide, and dissolving Fe in water2+Continuously removing refractory organic matters in the wastewater by performing Fenton oxidation reaction on ions and hydrogen peroxide;
s5: and (3) the sewage after Fenton oxidation treatment enters an inclined plate sedimentation tank, iron ions in the water are generated into ferric hydroxide sediment to be removed by adjusting the pH value to be slightly alkaline, and the effluent reaches the standard and is discharged to a clean water tank.
In a preferable technical scheme, in the step S1, the pH value of the wastewater is adjusted to 5-6.
In a preferable technical scheme, the time of the ozone-iron carbon electrolytic oxidation reaction in the step S3 is controlled to be 0.5-1 h, and the flux of the ceramic membrane filtration is controlled to be 40-60L/m2·h。
In a preferable technical scheme, the adding amount of the hydrogen peroxide in the step S4 is added according to the volume ratio of 1-2%.
Compared with the prior art, the invention has the beneficial effects that: the four sewage treatment technologies are mutually coupled, the four technologies are not simply connected in series, but are organically coupled, and the effect of technology superposition is realized. (1) The iron-carbon micro-electrolysis technology provides Fe as a catalyst for the ozone oxidation technology, and alumina serving as a ceramic membrane component provides a catalyst for the ozone oxidation, so that the reaction rate of the ozone oxidation is accelerated; (2) the ozone can oxidize organic matters on the surface of the ceramic membrane and organic matters entering the ceramic membrane pores while oxidizing the organic matters in the sewage, so that the ceramic membrane is prevented from being blocked; (3) fe ions generated in the process of the iron-carbon microelectrode can be directly mixed with added H2O2The Fenton oxidation reaction is generated, and the medicament of adding iron salt required by the Fenton technology is saved. The four technologies provide other technologies while exerting their own effectsThe method effectively overcomes the defect of low removal rate of a single technology, and greatly improves the processing efficiency of the system. The technology of the invention is not simple technology series connection, but the key technical parameters of the technological process are controlled to achieve the aims of best effect and lowest cost.
Drawings
FIG. 1 is a schematic structural diagram of a system for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
As shown in fig. 1, the system for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology in the embodiment of the present invention includes an ozone generator, a reaction tank 1, a reaction tank 2, an inclined plate sedimentation tank and a clean water tank, wherein the ozone generator is connected with the reaction tank 1 through an ejector, an iron-carbon electrode is disposed on the upper portion of the reaction tank 1, a ceramic membrane is disposed on the lower portion of the reaction tank 1, the reaction tank 1 is sequentially connected with the reaction tank 2, the inclined plate sedimentation tank and the clean water tank through a pipeline, hydrogen peroxide is added into the reaction tank 2, a solution in the inclined plate sedimentation tank is alkaline, and industrial wastewater is purified from the reaction tank 1 through the reaction tank 2, the inclined plate sedimentation tank and the clean water tank under the action of a vacuum pump.
As a specific embodiment of the invention, the ejector is connected with the bottom of the reaction tank 1, sewage enters the reaction tank 1 from the top, and the main component of the ceramic diaphragm is aluminum trioxide.
As a specific embodiment of the present invention, the water pump pumps the treated clean water in the clean water tank back to the ejector, and in the ejector, the treated clean water pumped back by the water pump is used to generate a high-speed water flow, so that the gaseous ozone can be brought into the water and rapidly dissolved in the water, and further the pollutants dissolved in the water are oxidized in the reaction tank 1.
The method for treating industrial wastewater by using the ozone ceramic membrane coupling oxidation technology comprises the following steps:
s1: adjusting the pH value of the wastewater, and feeding the wastewater into the reaction tank 1 from the top through a pipeline;
s2: the ozone generator generates ozone, negative pressure is formed by an air cavity in the ejector under the action of high-speed water flow to suck in ozone gas, the high-speed water flow crushes the ozone gas to form micro bubbles which are fully contacted and mixed with water, and the micro bubbles enter from the bottom of the reaction tank 1;
s3: performing oxidation treatment on pollutants difficult to biodegrade in the sewage by ozone-iron carbon electrolysis in a synergistic manner, and oxidizing organic matters into carbon dioxide and water or organic matters easy to degrade; the wastewater flows to the bottom of the reaction tank 1 from top to bottom and enters the ceramic membrane through the ceramic membrane, and the pollutants in the wastewater are further removed in the process of passing through the aperture of the ceramic membrane by ozone in the wastewater under the catalysis of aluminum oxide;
the reaction technology in the reaction tank 1 in the step relates to the following principle:
1. metal ozone catalytic oxidation
FeO and aluminum trioxide serving as a ceramic membrane component in the system have the function of a catalyst in the ozone oxidation process, so that the ozone oxidation efficiency is improved by about 20% compared with that of single ozone.
2. Ozone and iron-carbon micro-electrolysis bidirectional synergistic oxidation technology
The iron-carbon electrode forms a primary battery principle under an acidic condition, and can oxidize organic matters which are difficult to biodegrade in the wastewater; meanwhile, under the synergistic action of ozone oxidation, the oxidation efficiency can be improved, and organic matters, COD (chemical oxygen demand) and chromaticity can be removed.
The iron with low potential becomes an anode, the carbon with high potential becomes a cathode, and electrochemical reaction occurs under the acidic oxygenation condition, and the reaction process is as follows:
anode (Fe): Fe-2e → Fe2+,
Cathode (C) 2H++2e→2[H]→H2,
In the reaction, nascent Fe is produced2+And atomic H with high chemical activity, which can change the structure and characteristics of many organic matters in waste water and make them produce chain breaking and ring openingAnd the like.
Because of the ozone oxidation, oxygen is generated later, namely, oxygen is charged and the scrap iron is prevented from hardening. The following reactions may also occur:
O2+4H++4e→2H2O；
O2+2H2O+4e→4OH－；
4Fe2++O2+4H+→2H2O+4Fe3+。
OH formed in the reaction－Is the reason of the rising pH value of the effluent, and is made of Fe2+Fe produced by oxidation3+Gradually hydrolyzing to generate Fe (OH) with large polymerization degree3The colloid flocculant can effectively adsorb and coagulate pollutants in water, thereby enhancing the purification effect of wastewater, namely the synergy of ozone and iron-carbon micro-electrolysis.
3. Ozone ceramic membrane oxidation technology
The ceramic membrane plays a role in physically separating the colloid floccules generated in the process of micro-electrolysis of ozone and iron carbon, the water outlet effect of the system is improved, after ozone is added into the system, on one hand, the component of the ceramic membrane is aluminum trioxide, which can play a role of a catalyst for ozone oxidation, the catalytic function improves the treatment efficiency of the system, and meanwhile, the oxidation capacity of the ozone can ensure that the surface of the ceramic membrane and the aperture of the ceramic membrane are not easily blocked by organic matters, so that the system is not easily blocked, and a good physical separation effect is achieved.
S4: pumping sewage from the reaction tank 1 into the reaction tank 2 by a vacuum pump, adding hydrogen peroxide, and dissolving Fe in water2+Continuously removing refractory organic matters in the wastewater by performing Fenton oxidation reaction on ions and hydrogen peroxide;
the Fenton oxidation technology is mainly used for producing OH (hydroxyl radical) by reacting ferrous ions in water with hydrogen peroxide under a slightly acidic condition, wherein the hydroxyl radical has extremely strong oxidizability and can oxidize organic pollutants in water into carbon dioxide and water so as to further remove the organic pollutants in the water.
S5: and (3) the sewage after Fenton oxidation treatment enters an inclined plate sedimentation tank, iron ions in the water are generated into ferric hydroxide sediment to be removed by adjusting the pH value to be slightly alkaline, and the effluent reaches the standard and is discharged to a clean water tank.
The four sewage treatment technologies are mutually coupled, and are not simply connected in series but organically coupled with each other, so that the effect of technology superposition is realized. (1) The iron-carbon micro-electrolysis technology provides Fe as a catalyst for the ozone oxidation technology, and alumina serving as a ceramic membrane component provides a catalyst for the ozone oxidation, so that the reaction rate of the ozone oxidation is accelerated; (2) the ozone can oxidize organic matters on the surface of the ceramic membrane and organic matters entering the ceramic membrane holes while oxidizing the organic matters in the sewage, so that the ceramic membrane is prevented from being blocked without arranging a backwashing system; (3) fe ions generated in the process of the iron-carbon microelectrode can be directly mixed with added H2O2The Fenton oxidation reaction is generated, and the medicament of adding iron salt required by the Fenton technology is saved. The four technologies provide conditions for other technologies while exerting their own effects, effectively overcome the disadvantage of low removal rate of a single technology, and greatly improve the processing efficiency of the system. The technology of the invention is not simple technology series connection, but the key technical parameters of the technological process are controlled to achieve the aims of best effect and lowest cost.
Ozone passes through the pipeline and gets into 1 bottom of reaction tank, and the removal from the bottom up forms crisscrossly with the operation of the waste water from the top down, and air water forms against the current, and ozone is in the in-process that rises and waste water fully contacts, also can permeate into inside the iron carbon electrolysis simultaneously, oxidation organic matter also can make the iron carbon electrode be difficult to be blockked up by the organic matter and lead to the iron carbon electrode to become invalid. The ozone catalytic oxidation and micro-electrolysis technology can be facilitated to fully exert the efficiency, and in practical application, the ozone concentration is controlled according to the concentration of organic matters in the wastewater.
In the step S1, the pH value of the wastewater is adjusted to be slightly acidic, preferably, the pH value is controlled to be 5-6, the pH value is too low, the oxidizing capability of ozone is influenced, the pH value is kept at 5-6, the iron-carbon electrolysis can be fully performed, the oxidizing capability of ozone can be performed, and hydrochloric acid is used for adjusting the pH value to be 5 in the embodiment of the invention.
In step S3, the time of the ozone-iron carbon electrolytic oxidation reaction is controlledThe flux of the ceramic membrane filtration is controlled to be 40-60L/m within 0.5-1 h2H, the electrolytic coupling of ozone and iron carbon is beneficial to quickly oxidizing the pollutants which are dissolved in water and difficult to decompose, the reaction time is shortened, the occupied area is saved, and the investment cost is reduced;
in the step S4, the adding amount of the hydrogen peroxide is added according to the volume ratio of 1-2%, preferably the adding amount of the hydrogen peroxide is added according to the volume ratio of 2%, and the pH value is adjusted to be alkaline by the NaOH solution in the step S5.
The experimental method comprises the steps of treating chemical wastewater through experiments, wherein the chemical wastewater is biochemically treated, the COD concentration is 350 mg/L, the treatment standard requirement is less than 100 mg/L, and the treatment effect of the technical scheme of the application, the ozone oxidation scheme and the Fenton technical scheme on the chemical wastewater is compared in the experimental process.
Example 1
S1: adjusting the pH value of the wastewater to 5, and feeding the wastewater into the reaction tank 1 from the top through a pipeline;
s2: the ozone generator generates ozone, negative pressure is formed by an air cavity in the ejector under the action of high-speed water flow to suck in ozone gas, the high-speed water flow crushes the ozone gas to form micro bubbles which are fully contacted and mixed with water, and the micro bubbles enter from the bottom of the reaction tank 1;
s3, performing oxidation treatment on the pollutants difficult to biodegrade in the sewage by ozone-iron carbon electrolysis in a coordinated manner, controlling the oxidation reaction time to be 1h, oxidizing the organic matters into carbon dioxide and water or organic matters easy to degrade, enabling the wastewater to flow into the ceramic membrane from top to bottom of the reaction tank 1, further removing the pollutants in the wastewater in the process of passing through the aperture of the ceramic membrane under the catalysis of aluminum oxide, and controlling the filtering flux of the ceramic membrane to be 40L/m2·h；
S4: pumping sewage from a reaction tank 1 into a reaction tank 2 by a vacuum pump, adding hydrogen peroxide, wherein the adding amount of the hydrogen peroxide is 2% of the volume ratio, and dissolving out Fe in water2+Continuously removing refractory organic matters in the wastewater by performing Fenton oxidation reaction on ions and hydrogen peroxide;
s5: and (3) the sewage after Fenton oxidation treatment enters an inclined plate sedimentation tank, iron ions in the water are generated into ferric hydroxide sediment to be removed by adjusting the pH value to be slightly alkaline, and the effluent reaches the standard and is discharged to a clean water tank.
Example 2
S1: adjusting the pH value of the wastewater to 6, and feeding the wastewater into the reaction tank 1 from the top through a pipeline;
s2: the ozone generator generates ozone, negative pressure is formed by an air cavity in the ejector under the action of high-speed water flow to suck in ozone gas, the high-speed water flow crushes the ozone gas to form micro bubbles which are fully contacted and mixed with water, and the micro bubbles enter from the bottom of the reaction tank 1;
s3, performing oxidation treatment on the pollutants difficult to biodegrade in the sewage by ozone-iron carbon electrolysis in a synergistic manner, controlling the oxidation reaction time to be 0.5h, oxidizing the organic matters into carbon dioxide and water or organic matters easy to degrade, enabling the wastewater to flow into the ceramic membrane from top to bottom of the reaction tank 1 and enter the ceramic membrane through the ceramic membrane, further removing the pollutants in the wastewater in the process of passing through the aperture of the ceramic membrane under the catalysis of aluminum oxide, and controlling the filtering flux of the ceramic membrane to be 60L/m2·h；
S4: pumping sewage from a reaction tank 1 into a reaction tank 2 by a vacuum pump, adding hydrogen peroxide, wherein the adding amount of the hydrogen peroxide is added according to the volume ratio of 1%, and Fe dissolved out in water2+Continuously removing refractory organic matters in the wastewater by performing Fenton oxidation reaction on ions and hydrogen peroxide;
s5: and (3) the sewage after Fenton oxidation treatment enters an inclined plate sedimentation tank, iron ions in the water are generated into ferric hydroxide sediment to be removed by adjusting the pH value to be slightly alkaline, and the effluent reaches the standard and is discharged to a clean water tank.
Example 3
S1: adjusting the pH value of the wastewater to 5.5, and feeding the wastewater into the reaction tank 1 from the top through a pipeline;
s2: the ozone generator generates ozone, negative pressure is formed by an air cavity in the ejector under the action of high-speed water flow to suck in ozone gas, the high-speed water flow crushes the ozone gas to form micro bubbles which are fully contacted and mixed with water, and the micro bubbles enter from the bottom of the reaction tank 1;
s3: ozone-iron-carbon electrolysis assistantSimultaneously, the oxidation treatment is carried out on the pollutants which are difficult to biodegrade in the sewage, the oxidation reaction time is controlled to be 0.75h, the organic matters are oxidized into carbon dioxide and water or the organic matters which are easy to degrade, the wastewater enters the ceramic membrane from top to bottom at the bottom of the reaction tank 1 and enters the ceramic membrane through the ceramic membrane, the pollutants in the wastewater are further removed in the process of passing through the aperture of the ceramic membrane under the catalysis of aluminum oxide, and the filtering flux of the ceramic membrane is controlled to be 50L/m2·h；
S4: pumping sewage from a reaction tank 1 into a reaction tank 2 by a vacuum pump, adding hydrogen peroxide, wherein the adding amount of the hydrogen peroxide is 1.5% by volume, and Fe dissolved out in water2+Continuously removing refractory organic matters in the wastewater by performing Fenton oxidation reaction on ions and hydrogen peroxide;
s5: and (3) the sewage after Fenton oxidation treatment enters an inclined plate sedimentation tank, iron ions in the water are generated into ferric hydroxide sediment to be removed by adjusting the pH value to be slightly alkaline, and the effluent reaches the standard and is discharged to a clean water tank.
Comparative example 1
The ozone treatment method comprises the steps of taking 50L chemical wastewater and COD 350 mg/L, introducing ozone into the chemical wastewater, reacting for 2 hours, and measuring the COD value in the wastewater after the reaction is finished.
Comparative example 2
The Fenton treatment method comprises the steps of taking 50L chemical wastewater, adjusting the COD to be 350 mg/L and the pH to be 3-4, adding ferrous sulfate and hydrogen peroxide according to a ratio, and reacting for 2 hours.
TABLE 1 comparison of the effects of wastewater treatment
| Index (I) | COD removal rate | Rate of reaction | Economic benefitBook (I) |
| Example 1 | 85％ | 148.8mg/L.h | Cost per ton of water is 5.3 yuan |
| Example 2 | 83％ | 145.6mg/L.h | Cost per ton of water is 5.1 yuan |
| Example 3 | 87％ | 149.1mg/L.h | Cost of 5.5 yuan per ton of water |
| Comparative example 1 | 60％ | 105mg/L.h | Cost of 8 yuan per ton |
| Comparative example 2 | 65％ | 113.8mg/L.h | Cost per ton of water is 6.5 yuan |
In the process of treating chemical wastewater by adopting the technology, the COD removal rate is improved by 25% compared with the process of singly adopting ozone to treat the chemical wastewater, the reaction rate is improved by 1 time, the economic cost is reduced by 21.6%, the COD removal rate is improved by 20% compared with the process of singly adopting fenton technology, the reaction rate is improved by more than 1.3 times, the economic cost is reduced by about 22%, the effluent COD is 52.5 mg/L, and the national discharge standard is reached.
In the process of treating the oily wastewater by adopting the technology, the COD removal rate is improved by 30% compared with the COD removal rate treated by adopting ozone alone, the reaction rate is improved by 1.5 times, the economic cost is reduced by 30%, the COD removal rate is improved by more than 340% compared with the COD removal rate treated by adopting fenton technology alone, the reaction rate is improved by more than 2 times, the economic cost is reduced by about 20%, and the treatment effect reaches the national emission standard.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (6)
1. The utility model provides a system for industrial waste water is handled to ozone ceramic membrane coupling oxidation technology, a serial communication port, including ozone generator, reaction tank 1, reaction tank 2, inclined plate sedimentation tank and clean water basin, ozone generator pass through the ejector with reaction tank 1 is connected, the upper portion of reaction tank 1 is provided with the iron carbon electrode, and the lower part is provided with the ceramic diaphragm, reaction tank 1 pass through the pipeline in proper order with reaction tank 2, inclined plate sedimentation tank and clean water basin are connected, and industrial waste water realizes purifying up to standard from reaction tank 1 through reaction tank 2, inclined plate sedimentation tank and clean water basin under the vacuum pump effect.
2. The system for treating industrial wastewater by using an ozone ceramic membrane-coupled oxidation technology as claimed in claim 1, wherein the ejector is connected to the bottom of the reaction tank 1, and sewage enters the reaction tank 1 from the top.
3. A method for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology is characterized by comprising the following steps:
s1: adjusting the pH value of the wastewater, and feeding the wastewater into the reaction tank 1 from the top through a pipeline;
s2: the ozone generator generates ozone, negative pressure is formed by an air cavity in the ejector under the action of high-speed water flow to suck in ozone gas, the high-speed water flow crushes the ozone gas to form micro bubbles which are fully contacted and mixed with water, and the micro bubbles enter from the bottom of the reaction tank 1;
s3: the ozone-iron carbon electrolysis is cooperated with the sewage treatment system to carry out oxidation treatment on the pollutants difficult to be biodegraded in the sewage, and organic matters are oxidized into carbon dioxide and water or organic matters easy to degrade; the wastewater flows to the bottom of the reaction tank 1 from top to bottom and enters the ceramic membrane through the ceramic membrane, and the pollutants in the wastewater are further removed in the process of passing through the aperture of the ceramic membrane by ozone in the wastewater under the catalysis of aluminum oxide;
s4: pumping sewage from the reaction tank 1 into the reaction tank 2 by a vacuum pump, adding hydrogen peroxide, and dissolving Fe in water2+Continuously removing refractory organic matters in the wastewater by performing Fenton oxidation reaction on ions and hydrogen peroxide;
s5: and (3) the sewage after Fenton oxidation treatment enters an inclined plate sedimentation tank, iron ions in the water are generated into ferric hydroxide sediment to be removed by adjusting the pH value to be slightly alkaline, and the effluent reaches the standard and is discharged to a clean water tank.
4. The method for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology as claimed in claim 3, wherein the pH value of the wastewater is adjusted to 5-6 in step S1.
5. The method for treating industrial wastewater by using an ozone ceramic membrane coupling oxidation technology as claimed in claim 4, wherein the time of the ozone-iron carbon electrolytic oxidation reaction in the step S3 is controlled to be 0.5-1 h, and the flux of the ceramic membrane filtration is controlled to be 40-60L/m2·h。
6. The method for treating industrial wastewater by using the ozone ceramic membrane coupling oxidation technology as claimed in claim 5, wherein the adding amount of the hydrogen peroxide in the step S4 is 1-2% by volume.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105380A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | PVC mother liquor recycling device and method |
| CN114835306A (en) * | 2022-06-10 | 2022-08-02 | 苏州新能环境技术股份有限公司 | High-difficulty wastewater treatment method based on ozone and ceramic membrane |
| CN114956298A (en) * | 2022-06-20 | 2022-08-30 | 哈尔滨泽能环保科技有限公司 | Dissolved air catalytic system for municipal sewage and application thereof |
-
2020
- 2020-05-14 CN CN202010405352.0A patent/CN111470676A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 宋佳: "臭氧/陶瓷膜工艺在水处理中协同作用过程特征研究", 《中国博士学位论文全文数据库 工程科技Ⅱ辑》 * |
| 董姣: "臭氧/微电解工艺对印染废水的处理效能研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114105380A (en) * | 2020-08-31 | 2022-03-01 | 中国石油化工股份有限公司 | PVC mother liquor recycling device and method |
| CN114835306A (en) * | 2022-06-10 | 2022-08-02 | 苏州新能环境技术股份有限公司 | High-difficulty wastewater treatment method based on ozone and ceramic membrane |
| CN114956298A (en) * | 2022-06-20 | 2022-08-30 | 哈尔滨泽能环保科技有限公司 | Dissolved air catalytic system for municipal sewage and application thereof |
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Application publication date: 20200731 |