CN107364998B - Treatment process of medium-concentration organic industrial wastewater - Google Patents
Treatment process of medium-concentration organic industrial wastewater Download PDFInfo
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- CN107364998B CN107364998B CN201710665138.7A CN201710665138A CN107364998B CN 107364998 B CN107364998 B CN 107364998B CN 201710665138 A CN201710665138 A CN 201710665138A CN 107364998 B CN107364998 B CN 107364998B
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- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims abstract description 10
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000002351 wastewater Substances 0.000 claims abstract description 35
- 230000003647 oxidation Effects 0.000 claims abstract description 33
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 33
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 11
- 239000000126 substance Substances 0.000 claims abstract description 10
- 238000005374 membrane filtration Methods 0.000 claims abstract description 8
- 238000001179 sorption measurement Methods 0.000 claims abstract description 4
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 238000002306 biochemical method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- 238000010525 oxidative degradation reaction Methods 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000010170 biological method Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 244000005700 microbiome Species 0.000 abstract description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a treatment process of medium-concentration organic industrial wastewater, which comprises the following steps: inputting the original wastewater into a regulating tank to remove large granular substances; then the wastewater is oxidized in a combined ultrasonic and hydrogen peroxide oxidation system and a combined ozone and ultraviolet oxidation systemCirculating twice in the system; and then inputting the effluent of the ozone and ultraviolet combined oxidation system into a membrane filtration system, wherein the membrane filtration system consists of an ultrafiltration system and a reverse osmosis system, the ultrafiltration produced water enters the reverse osmosis system for further treatment, the effluent of the reverse osmosis system is input into an activated carbon adsorption device, and the produced water after being adsorbed by activated carbon is recycled. The invention is suitable for COD of 5000-8000 mg/L, pH value of 6-12 and water amount of 10-35 m3The wastewater of chemical pharmaceutical industry, mechanical manufacturing industry and other industries which has poor biodegradability or is toxic and not suitable for the growth of microorganisms can be recycled by 70-80 percent after being treated, the waste is reduced, the water is saved, and a small part of concentrated water can reach the discharge standard after being treated by a biological method.
Description
Technical Field
The invention relates to a treatment process of medium-concentration organic industrial wastewater.
Background
Wastewater treatment (wastewater treatment methods) is to treat wastewater by physical, chemical and biological methods, so that the wastewater is purified and pollution is reduced, and the wastewater is recycled and reused, and water resources are fully utilized.
The treatment of medium concentration organic industrial wastewater is always difficult, and a suitable treatment process needs to be designed.
Disclosure of Invention
The invention aims to provide a treatment process of medium-concentration organic industrial wastewater, which is suitable for treating COD (chemical oxygen demand) of 5000-8000 mg/L, pH value of 6-12 and water quantity of 10-35 m3The wastewater of chemical pharmaceutical industry, mechanical manufacturing industry and other industries which has poor biodegradability or is toxic and not suitable for the growth of microorganisms can be recycled by 70-80 percent after being treated, the waste is reduced, the water is saved, and a small part of concentrated water can reach the discharge standard after being treated by a biological method.
In order to achieve the aim, the technical scheme of the invention is to design a treatment process of medium-concentration organic industrial wastewater, which comprises the following steps:
inputting the original wastewater into an adjusting tank, and removing large-particle substances in the wastewater through coarse filtration;
then inputting the wastewater into an ultrasonic and hydrogen peroxide combined oxidation system, wherein the adding amount of the hydrogen peroxide is 2-4 kg/m3Strong oxidizing hydroxyl free radicals are generated under the action of ultrasonic waves, and the cavitation effect of the ultrasonic waves is combined, so that the chroma removal rate of the wastewater reaches 80%, the ultraviolet light penetrability is improved, and the COD removal rate is 20-30%;
inputting the wastewater into an ozone and ultraviolet combined oxidation system, wherein two electrodeless microwave ultraviolet lamps with extremely high penetrability are adopted as the ultraviolet lamps, the number of the ultraviolet lamps is two, the wavelengths are 254nm and 185nm respectively, the power is 6kW, the ozone yield is 500g/h, a large amount of hydroxyl radicals are generated in the system, organic matters are further subjected to oxidative degradation, and the removal rate is 30-40%;
the effluent of the ozone and ultraviolet combined oxidation system flows back to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system and the ozone and ultraviolet combined oxidation system, so that 80-85% of organic matters are oxidized and removed;
and after twice circulation, inputting the effluent of the ozone and ultraviolet combined oxidation system into a membrane filtration system, wherein the membrane filtration system consists of an ultrafiltration system and a reverse osmosis system, the ultrafiltration produced water enters the reverse osmosis system for further treatment, the effluent of the reverse osmosis system is input into an activated carbon adsorption device, and the produced water after being adsorbed by activated carbon is recycled.
Preferably, the COD of the raw wastewater: 5000-8000 mg/L, pH value: 6-12, water quantity: 10 to 35m3/h。
Preferably, the retention time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10-15 minutes.
Preferably, the retention time of the wastewater in the ozone and ultraviolet combined oxidation system is 10-15 minutes.
Preferably, concentrated water of the ultrafiltration system is treated by a biochemical method and then is discharged after reaching the standard.
Preferably, concentrated water of the reverse osmosis system is input into an ultrasonic and hydrogen peroxide combined oxidation system for further treatment.
Preferably, the water outlet of the reverse osmosis system is 70-80% of the total water amount.
Preferably, the COD of the produced water is less than or equal to 100 mg/L.
The invention has the advantages and beneficial effects that: provides a treatment process of medium-concentration organic industrial wastewater, which is suitable for treating COD (chemical oxygen demand) of 5000-8000 mg/L, pH value of 6-12 and water amount of 10-35 m3The wastewater of chemical pharmaceutical industry, mechanical manufacturing industry and other industries with poor biodegradability or toxicity and unsuitable microorganism growth can be recycled 70-80% after being treated, thereby reducing waste and saving water, and a small part of concentrated water is treated by a biological methodThe emission can reach the standard.
Detailed Description
The following further describes embodiments of the present invention with reference to examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
The technical scheme of the specific implementation of the invention is as follows:
a treatment process of medium-concentration organic industrial wastewater comprises the following steps:
inputting the original wastewater into an adjusting tank, and removing large-particle substances in the wastewater through coarse filtration;
then inputting the wastewater into an ultrasonic and hydrogen peroxide combined oxidation system, wherein the adding amount of the hydrogen peroxide is 2-4 kg/m3Strong oxidizing hydroxyl free radicals are generated under the action of ultrasonic waves, and the cavitation effect of the ultrasonic waves is combined, so that the chroma removal rate of the wastewater reaches 80%, the ultraviolet light penetrability is improved, and the COD removal rate is 20-30%;
inputting the wastewater into an ozone and ultraviolet combined oxidation system, wherein two electrodeless microwave ultraviolet lamps with extremely high penetrability are adopted as the ultraviolet lamps, the number of the ultraviolet lamps is two, the wavelengths are 254nm and 185nm respectively, the power is 6kW, the ozone yield is 500g/h, a large amount of hydroxyl radicals are generated in the system, organic matters are further subjected to oxidative degradation, and the removal rate is 30-40%;
the effluent of the ozone and ultraviolet combined oxidation system flows back to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system and the ozone and ultraviolet combined oxidation system, so that 80-85% of organic matters are oxidized and removed;
and after twice circulation, inputting the effluent of the ozone and ultraviolet combined oxidation system into a membrane filtration system, wherein the membrane filtration system consists of an ultrafiltration system and a reverse osmosis system, the ultrafiltration produced water enters the reverse osmosis system for further treatment, the effluent of the reverse osmosis system is input into an activated carbon adsorption device, and the produced water after being adsorbed by activated carbon is recycled.
COD of the original wastewater: 5000-8000 mg/L, pH value: 6-12, water quantity: 10 to 35m3/h。
The retention time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10-15 minutes.
The retention time of the wastewater in the ozone and ultraviolet combined oxidation system is 10-15 minutes.
Concentrated water of the ultrafiltration system is treated by a biochemical method and then is discharged after reaching the standard.
And concentrated water of the reverse osmosis system is input into the ultrasonic and hydrogen peroxide combined oxidation system for further treatment.
The water outlet of the reverse osmosis system is 70-80% of the total water quantity.
The COD of the produced water is less than or equal to 100 mg/L.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (1)
1. The treatment process of the medium-concentration organic industrial wastewater is characterized by comprising the following steps:
inputting the original wastewater into an adjusting tank, and removing large-particle substances in the wastewater through coarse filtration;
then inputting the wastewater into an ultrasonic and hydrogen peroxide combined oxidation system, wherein the adding amount of the hydrogen peroxide is 2-4 kg/m3Strong oxidizing hydroxyl free radicals are generated under the action of ultrasonic waves, and the cavitation effect of the ultrasonic waves is combined, so that the chroma removal rate of the wastewater reaches 80%, the ultraviolet light penetrability is improved, and the COD removal rate is 20-30%;
inputting the wastewater into an ozone and ultraviolet combined oxidation system, wherein two electrodeless microwave ultraviolet lamps with extremely high penetrability are adopted as the ultraviolet lamps, the number of the ultraviolet lamps is two, the wavelengths are 254nm and 185nm respectively, the power is 6kW, the ozone yield is 500g/h, a large amount of hydroxyl radicals are generated in the system, organic matters are further subjected to oxidative degradation, and the removal rate is 30-40%;
the effluent of the ozone and ultraviolet combined oxidation system flows back to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system and the ozone and ultraviolet combined oxidation system, so that 80-85% of organic matters are oxidized and removed;
after twice circulation, inputting the effluent of the ozone and ultraviolet combined oxidation system into a membrane filtration system, wherein the membrane filtration system consists of an ultrafiltration system and a reverse osmosis system, the ultrafiltration produced water enters the reverse osmosis system for further treatment, the effluent of the reverse osmosis system is input into an activated carbon adsorption device, and the produced water after being adsorbed by activated carbon is recycled;
COD of the original wastewater: 5000-8000 mg/L, pH value: 6-12, water quantity: 10 to 35m3/h；
The retention time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10-15 minutes;
the retention time of the wastewater in the ozone and ultraviolet combined oxidation system is 10-15 minutes;
concentrated water of the ultrafiltration system is treated by a biochemical method and then is discharged after reaching the standard;
concentrated water of the reverse osmosis system is input into an ultrasonic and hydrogen peroxide combined oxidation system for further treatment;
the water outlet of the reverse osmosis system is 70-80% of the total water amount;
the COD of the produced water is less than or equal to 100 mg/L.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665138.7A CN107364998B (en) | 2017-08-07 | 2017-08-07 | Treatment process of medium-concentration organic industrial wastewater |
| PCT/CN2017/110328 WO2019029034A1 (en) | 2017-08-07 | 2017-11-10 | Process for treating medium-concentration organic industrial wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710665138.7A CN107364998B (en) | 2017-08-07 | 2017-08-07 | Treatment process of medium-concentration organic industrial wastewater |
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| Publication Number | Publication Date |
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| CN107364998A CN107364998A (en) | 2017-11-21 |
| CN107364998B true CN107364998B (en) | 2020-10-27 |
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| CN201710665138.7A Active CN107364998B (en) | 2017-08-07 | 2017-08-07 | Treatment process of medium-concentration organic industrial wastewater |
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| WO (1) | WO2019029034A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108264177A (en) * | 2018-02-07 | 2018-07-10 | 广东宇东环保科技有限公司 | A kind of method of air pocket chamber sewage oxidation treatment |
| CN108083527A (en) * | 2018-02-07 | 2018-05-29 | 广东宇东环保科技有限公司 | A kind of method of air pocket chamber joint ozone treatment waste water |
| CN110127816A (en) * | 2018-02-09 | 2019-08-16 | 荆门市格林美新材料有限公司 | A kind of unpowered reverse osmosis concentrated water recycling and reusing system and its recycling technique |
| CN113003852A (en) * | 2020-11-13 | 2021-06-22 | 四川全息生态环境技术产业有限公司 | Ultrasonic wave and H2O2And micro-channel advanced oxidation method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| FR2705333B1 (en) * | 1993-05-18 | 1995-08-04 | Omnium Traitement Valorisa | Process and installation for the purification of an aqueous effluent by oxidation on an adsorbent support. |
| US8858892B2 (en) * | 2007-12-21 | 2014-10-14 | Kimberly-Clark Worldwide, Inc. | Liquid treatment system |
| CN105366836A (en) * | 2014-09-02 | 2016-03-02 | 苏州久沛环保科技有限公司 | Process and device for circulating multi-dimensional catalyzing advanced oxidation treatment of oily wastewater |
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- 2017-08-07 CN CN201710665138.7A patent/CN107364998B/en active Active
- 2017-11-10 WO PCT/CN2017/110328 patent/WO2019029034A1/en active Application Filing
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| Publication number | Publication date |
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| CN107364998A (en) | 2017-11-21 |
| WO2019029034A1 (en) | 2019-02-14 |
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