WO2019029034A1 - Process for treating medium-concentration organic industrial wastewater - Google Patents

Process for treating medium-concentration organic industrial wastewater Download PDF

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Publication number
WO2019029034A1
WO2019029034A1 PCT/CN2017/110328 CN2017110328W WO2019029034A1 WO 2019029034 A1 WO2019029034 A1 WO 2019029034A1 CN 2017110328 W CN2017110328 W CN 2017110328W WO 2019029034 A1 WO2019029034 A1 WO 2019029034A1
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wastewater
combined
oxidation system
concentration organic
ozone
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PCT/CN2017/110328
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French (fr)
Chinese (zh)
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姜广朋
姚嘉恒
李飞
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苏州久沛环保科技有限公司
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Publication of WO2019029034A1 publication Critical patent/WO2019029034A1/en

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    • 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

Definitions

  • the invention relates to a treatment process for medium concentration organic industrial wastewater.
  • Wastewater treatment methods use physical, chemical and biological methods to treat wastewater, purify wastewater, reduce pollution, and even achieve wastewater recovery, reuse, and full use of water resources.
  • the object of the present invention is to provide a process for treating medium-concentration organic industrial wastewater, which is suitable for Cod at 5000-8000 mg/L, Ph value at 6-12, water content 10-35 m 3 /h, and poor biodegradability or toxicity for microorganisms.
  • the wastewater from the growing chemical and pharmaceutical and machinery manufacturing industries can be recycled 70% to 80% after treatment, which reduces waste and saves water. A small amount of concentrated water can be discharged by biological treatment.
  • the technical solution of the present invention is to design a treatment process for a medium concentration organic industrial wastewater, comprising the following steps:
  • the raw wastewater is input into the regulating tank, and coarse filtration is performed to remove large particulate matter in the wastewater;
  • the wastewater is then fed into the combined ultrasonic and hydrogen peroxide oxidation system.
  • the dosage of hydrogen peroxide is 2 ⁇ 4kg/m 3 , and the strong oxidizing hydroxyl radical is formed under the action of ultrasonic wave.
  • the color removal rate of wastewater is 80%.
  • the Cod removal rate is 20 to 30%;
  • the wastewater is then fed into the combined ozone and ultraviolet oxidation system.
  • the UV lamp uses an extremely penetrating microwave pump with two penetrating wavelengths of 254 nm and 185 nm, the power is 6 Kw, and the ozone production is 500 g/h. A large amount of hydroxyl radicals are generated inside, and the organic matter is further oxidized and degraded, and the removal rate is 30-40%;
  • the effluent of the combined ozone and ultraviolet oxidation system is refluxed to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system, ozone and ultraviolet combined oxidation system, so that 80% to 85% of the organic matter is oxidized.
  • the membrane filtration system consists of an ultrafiltration system and a reverse osmosis system.
  • the ultrafiltration produced water is further processed into the reverse osmosis system, and the effluent of the reverse osmosis system.
  • the activated carbon adsorption device is input, and the produced water after adsorption by activated carbon is reused.
  • the raw wastewater has a Cod of 5000 to 8000 mg/L, a Ph value of 6 to 12, and a water amount of 10 to 35 m 3 /h.
  • the residence time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10 to 15 minutes.
  • the residence time of the wastewater in the combined oxidation system of ozone and ultraviolet light is 10 to 15 minutes.
  • the concentrated water of the ultrafiltration system is treated by biochemical methods and discharged after reaching the standard.
  • the concentrated water input ultrasonic wave of the reverse osmosis system and the hydrogen peroxide combined oxidation system are further processed.
  • the effluent of the reverse osmosis system is 70% to 80% of the total water amount.
  • the water-producing Cod ⁇ 100 mg/L.
  • the invention has the advantages and beneficial effects of providing a medium concentration organic industrial wastewater treatment process, which is suitable for Cod at 5000-8000 mg/L, Ph value at 6-12, water content 10-35 m 3 /h and poor biodegradability or Wastewater from chemical and pharmaceutical and machinery manufacturing industries that are not suitable for microbial growth, 70% to 80% of waste water can be recycled after treatment, which reduces waste and saves water. A small amount of concentrated water can be discharged by biological treatment.
  • a process for treating medium-concentration organic industrial wastewater comprising the following steps:
  • the raw wastewater is input into the regulating tank, and coarse filtration is performed to remove large particulate matter in the wastewater;
  • the wastewater is then fed into the combined ultrasonic and hydrogen peroxide oxidation system.
  • the dosage of hydrogen peroxide is 2 ⁇ 4kg/m 3 , and the strong oxidizing hydroxyl radical is formed under the action of ultrasonic wave.
  • the color removal rate of wastewater is 80%.
  • the Cod removal rate is 20 to 30%;
  • the wastewater is then fed into the combined ozone and ultraviolet oxidation system.
  • the UV lamp uses an extremely penetrating microwave pump with two penetrating wavelengths of 254 nm and 185 nm, the power is 6 Kw, and the ozone production is 500 g/h. A large amount of hydroxyl radicals are generated inside, and the organic matter is further oxidized and degraded, and the removal rate is 30-40%;
  • the effluent of the combined ozone and ultraviolet oxidation system is refluxed to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system, ozone and ultraviolet combined oxidation system, so that 80% to 85% of the organic matter is oxidized.
  • the membrane filtration system consists of an ultrafiltration system and a reverse osmosis system.
  • the ultrafiltration produced water is further processed into the reverse osmosis system, and the effluent of the reverse osmosis system.
  • the activated carbon adsorption device is input, and the produced water after adsorption by activated carbon is reused.
  • the raw wastewater has a Cod of 5000 to 8000 mg/L, a Ph value of 6 to 12, and a water amount of 10 to 35 m 3 /h.
  • the residence time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10 to 15 minutes.
  • the residence time of the wastewater in the combined oxidation system of ozone and ultraviolet light is 10 to 15 minutes.
  • the concentrated water of the ultrafiltration system is treated by biochemical method and discharged after reaching the standard.
  • the concentrated water input ultrasonic wave of the reverse osmosis system and the hydrogen peroxide combined oxidation system are further processed.
  • the effluent of the reverse osmosis system is 70% to 80% of the total water.
  • the water produced has a Cod ⁇ 100 mg/L.

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  • 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

A process for treating medium-concentration organic industrial wastewater, comprising the following steps: feeding raw wastewater into a conditioning tank to remove large particulate materials; then circulating the wastewater twice in an ultrasonic and hydrogen peroxide combined oxidation system and an ozone and ultraviolet combined oxidation system; and feeding the effluent of the ozone and ultraviolet combined oxidation system into a membrane filtration system, the membrane filtration system being composed of an ultrafiltration system and a reverse osmosis system, feeding the ultrafiltration produced water into the reverse osmosis system for further processing, and feeding the effluent of the reverse osmosis system into an activated carbon adsorption device, the water produced by means of the adsorption of activated carbon being reused.

Description

中等浓度有机工业废水的处理工艺Process for treating medium concentration organic industrial wastewater 技术领域Technical field
本发明涉及中等浓度有机工业废水的处理工艺。The invention relates to a treatment process for medium concentration organic industrial wastewater.
背景技术Background technique
废水处理(wastewater treatment methods)就是利用物理、化学和生物的方法对废水进行处理，使废水净化，减少污染，以至达到废水回收、复用，充分利用水资源。Wastewater treatment methods use physical, chemical and biological methods to treat wastewater, purify wastewater, reduce pollution, and even achieve wastewater recovery, reuse, and full use of water resources.
中等浓度有机工业废水的处理，一直是比较困难的，需要设计适用的处理工艺。The treatment of medium-concentration organic industrial wastewater has always been difficult, and it is necessary to design a suitable treatment process.
发明内容Summary of the invention
本发明的目的在于提供一种中等浓度有机工业废水的处理工艺，适用于Cod在5000～8000mg/L、Ph值在6～12、水量10～35m3/h且可生化性差或有毒不适于微生物生长的化工制药和机械制造等行业的废水，废水经处理后70％～80％可回收利用，减少了浪费，节约了用水，少部分浓水经生物法处理可达标排放。The object of the present invention is to provide a process for treating medium-concentration organic industrial wastewater, which is suitable for Cod at 5000-8000 mg/L, Ph value at 6-12, water content 10-35 m 3 /h, and poor biodegradability or toxicity for microorganisms. The wastewater from the growing chemical and pharmaceutical and machinery manufacturing industries can be recycled 70% to 80% after treatment, which reduces waste and saves water. A small amount of concentrated water can be discharged by biological treatment.
为实现上述目的，本发明的技术方案是设计一种中等浓度有机工业废水的处理工艺，包括如下步骤：In order to achieve the above object, the technical solution of the present invention is to design a treatment process for a medium concentration organic industrial wastewater, comprising the following steps:
将原始废水输入调节池，经粗过滤，去除废水中的大颗粒物质；The raw wastewater is input into the regulating tank, and coarse filtration is performed to remove large particulate matter in the wastewater;
再将废水输入超声波和双氧水组合氧化系统，双氧水投加量为2～4kg/m3，在超声波作用下生成强氧化性羟基自由基，结合超声波的空化作用，废水色度去除率达80％，改善紫外光穿透性，Cod去除率在20～30％；The wastewater is then fed into the combined ultrasonic and hydrogen peroxide oxidation system. The dosage of hydrogen peroxide is 2~4kg/m 3 , and the strong oxidizing hydroxyl radical is formed under the action of ultrasonic wave. Combined with the cavitation of ultrasonic wave, the color removal rate of wastewater is 80%. , to improve the transparency of ultraviolet light, the Cod removal rate is 20 to 30%;
再将废水输入臭氧和紫外线组合氧化系统，紫外灯采用穿透性极好的无极微波紫外灯，数量为两支，波长分别为254nm和185nm，功率都为6Kw，臭氧产量为500g/h，系统内产生大量羟基自由基，有机物进一步被氧化降解，去除率30～40％；The wastewater is then fed into the combined ozone and ultraviolet oxidation system. The UV lamp uses an extremely penetrating microwave pump with two penetrating wavelengths of 254 nm and 185 nm, the power is 6 Kw, and the ozone production is 500 g/h. A large amount of hydroxyl radicals are generated inside, and the organic matter is further oxidized and degraded, and the removal rate is 30-40%;
将臭氧和紫外线组合氧化系统的出水回流至超声波和双氧水组合氧化系统，并使废水在超声波和双氧水组合氧化系统、臭氧和紫外线组合氧化系统中循环两次，使80％～85％的有机物被氧化去除；The effluent of the combined ozone and ultraviolet oxidation system is refluxed to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system, ozone and ultraviolet combined oxidation system, so that 80% to 85% of the organic matter is oxidized. Remove
循环两次后，将臭氧和紫外线组合氧化系统的出水输入膜过滤系统，膜过滤系统由超滤系统和反渗透系统两部分组成，超滤产水进入反渗透系统进一步处理，反渗透系统的出水输入活性炭吸附装置，经活性炭吸附后的产水回用。After circulating twice, the effluent of the combined ozone and ultraviolet oxidation system is fed into the membrane filtration system. The membrane filtration system consists of an ultrafiltration system and a reverse osmosis system. The ultrafiltration produced water is further processed into the reverse osmosis system, and the effluent of the reverse osmosis system. The activated carbon adsorption device is input, and the produced water after adsorption by activated carbon is reused.
优选的，所述原始废水的Cod：5000～8000mg/L，Ph值：6～12，水量：10～35m3/h。Preferably, the raw wastewater has a Cod of 5000 to 8000 mg/L, a Ph value of 6 to 12, and a water amount of 10 to 35 m 3 /h.
优选的，所述废水在超声波和双氧水组合氧化系统中的停留时间为10～15分钟。 Preferably, the residence time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10 to 15 minutes.
优选的，所述废水在臭氧和紫外线组合氧化系统中的停留时间为10～15分钟。Preferably, the residence time of the wastewater in the combined oxidation system of ozone and ultraviolet light is 10 to 15 minutes.
优选的，所述超滤系统的浓水由生化法处理，后达标排放。Preferably, the concentrated water of the ultrafiltration system is treated by biochemical methods and discharged after reaching the standard.
优选的，所述反渗透系统的浓水输入超声波和双氧水组合氧化系统进一步处理。Preferably, the concentrated water input ultrasonic wave of the reverse osmosis system and the hydrogen peroxide combined oxidation system are further processed.
优选的，所述反渗透系统的出水为总水量的70％～80％。Preferably, the effluent of the reverse osmosis system is 70% to 80% of the total water amount.
优选的，所述产水的Cod≤100mg/L。Preferably, the water-producing Cod ≤ 100 mg/L.
本发明的优点和有益效果在于：提供一种中等浓度有机工业废水的处理工艺，适用于Cod在5000～8000mg/L、Ph值在6～12、水量10～35m3/h且可生化性差或有毒不适于微生物生长的化工制药和机械制造等行业的废水，废水经处理后70％～80％可回收利用，减少了浪费，节约了用水，少部分浓水经生物法处理可达标排放。The invention has the advantages and beneficial effects of providing a medium concentration organic industrial wastewater treatment process, which is suitable for Cod at 5000-8000 mg/L, Ph value at 6-12, water content 10-35 m 3 /h and poor biodegradability or Wastewater from chemical and pharmaceutical and machinery manufacturing industries that are not suitable for microbial growth, 70% to 80% of waste water can be recycled after treatment, which reduces waste and saves water. A small amount of concentrated water can be discharged by biological treatment.
具体实施方式Detailed ways
下面结合实施例，对本发明的具体实施方式作进一步描述。以下实施例仅用于更加清楚地说明本发明的技术方案，而不能以此来限制本发明的保护范围。The specific embodiments of the present invention are further described below in conjunction with the embodiments. The following examples are only intended to more clearly illustrate the technical solutions of the present invention, and are not intended to limit the scope of the present invention.
本发明具体实施的技术方案是：The technical solution specifically implemented by the present invention is:
一种中等浓度有机工业废水的处理工艺，包括如下步骤：A process for treating medium-concentration organic industrial wastewater, comprising the following steps:
将原始废水输入调节池，经粗过滤，去除废水中的大颗粒物质；The raw wastewater is input into the regulating tank, and coarse filtration is performed to remove large particulate matter in the wastewater;
再将废水输入超声波和双氧水组合氧化系统，双氧水投加量为2～4kg/m3，在超声波作用下生成强氧化性羟基自由基，结合超声波的空化作用，废水色度去除率达80％，改善紫外光穿透性，Cod去除率在20～30％；The wastewater is then fed into the combined ultrasonic and hydrogen peroxide oxidation system. The dosage of hydrogen peroxide is 2~4kg/m 3 , and the strong oxidizing hydroxyl radical is formed under the action of ultrasonic wave. Combined with the cavitation of ultrasonic wave, the color removal rate of wastewater is 80%. , to improve the transparency of ultraviolet light, the Cod removal rate is 20 to 30%;
再将废水输入臭氧和紫外线组合氧化系统，紫外灯采用穿透性极好的无极微波紫外灯，数量为两支，波长分别为254nm和185nm，功率都为6Kw，臭氧产量为500g/h，系统内产生大量羟基自由基，有机物进一步被氧化降解，去除率30～40％；The wastewater is then fed into the combined ozone and ultraviolet oxidation system. The UV lamp uses an extremely penetrating microwave pump with two penetrating wavelengths of 254 nm and 185 nm, the power is 6 Kw, and the ozone production is 500 g/h. A large amount of hydroxyl radicals are generated inside, and the organic matter is further oxidized and degraded, and the removal rate is 30-40%;
将臭氧和紫外线组合氧化系统的出水回流至超声波和双氧水组合氧化系统，并使废水在超声波和双氧水组合氧化系统、臭氧和紫外线组合氧化系统中循环两次，使80％～85％的有机物被氧化去除；The effluent of the combined ozone and ultraviolet oxidation system is refluxed to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system, ozone and ultraviolet combined oxidation system, so that 80% to 85% of the organic matter is oxidized. Remove
循环两次后，将臭氧和紫外线组合氧化系统的出水输入膜过滤系统，膜过滤系统由超滤系统和反渗透系统两部分组成，超滤产水进入反渗透系统进一步处理，反渗透系统的出水输入活性炭吸附装置，经活性炭吸附后的产水回用。After circulating twice, the effluent of the combined ozone and ultraviolet oxidation system is fed into the membrane filtration system. The membrane filtration system consists of an ultrafiltration system and a reverse osmosis system. The ultrafiltration produced water is further processed into the reverse osmosis system, and the effluent of the reverse osmosis system. The activated carbon adsorption device is input, and the produced water after adsorption by activated carbon is reused.
所述原始废水的Cod：5000～8000mg/L，Ph值：6～12，水量：10～35m3/h。The raw wastewater has a Cod of 5000 to 8000 mg/L, a Ph value of 6 to 12, and a water amount of 10 to 35 m 3 /h.
所述废水在超声波和双氧水组合氧化系统中的停留时间为10～15分钟。The residence time of the wastewater in the ultrasonic and hydrogen peroxide combined oxidation system is 10 to 15 minutes.
所述废水在臭氧和紫外线组合氧化系统中的停留时间为10～15分钟。 The residence time of the wastewater in the combined oxidation system of ozone and ultraviolet light is 10 to 15 minutes.
所述超滤系统的浓水由生化法处理，后达标排放。The concentrated water of the ultrafiltration system is treated by biochemical method and discharged after reaching the standard.
所述反渗透系统的浓水输入超声波和双氧水组合氧化系统进一步处理。The concentrated water input ultrasonic wave of the reverse osmosis system and the hydrogen peroxide combined oxidation system are further processed.
所述反渗透系统的出水为总水量的70％～80％。The effluent of the reverse osmosis system is 70% to 80% of the total water.
所述产水的Cod≤100mg/L。The water produced has a Cod ≤ 100 mg/L.
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明技术原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。 The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make several improvements and retouchings without departing from the technical principles of the present invention. It should also be considered as the scope of protection of the present invention.

Claims (8)

  1. 中等浓度有机工业废水的处理工艺，其特征在于，包括如下步骤：The treatment process of medium concentration organic industrial wastewater is characterized in that it comprises the following steps:
    将原始废水输入调节池，经粗过滤，去除废水中的大颗粒物质；The raw wastewater is input into the regulating tank, and coarse filtration is performed to remove large particulate matter in the wastewater;
    再将废水输入超声波和双氧水组合氧化系统，双氧水投加量为2～4kg/m3，在超声波作用下生成强氧化性羟基自由基，结合超声波的空化作用，废水色度去除率达80％，改善紫外光穿透性，Cod去除率在20～30％；The wastewater is then fed into the combined ultrasonic and hydrogen peroxide oxidation system. The dosage of hydrogen peroxide is 2~4kg/m 3 , and the strong oxidizing hydroxyl radical is formed under the action of ultrasonic wave. Combined with the cavitation of ultrasonic wave, the color removal rate of wastewater is 80%. , to improve the transparency of ultraviolet light, the Cod removal rate is 20 to 30%;
    再将废水输入臭氧和紫外线组合氧化系统，紫外灯采用穿透性极好的无极微波紫外灯，数量为两支，波长分别为254nm和185nm，功率都为6Kw，臭氧产量为500g/h，系统内产生大量羟基自由基，有机物进一步被氧化降解，去除率30～40％；The wastewater is then fed into the combined ozone and ultraviolet oxidation system. The UV lamp uses an extremely penetrating microwave pump with two penetrating wavelengths of 254 nm and 185 nm, the power is 6 Kw, and the ozone production is 500 g/h. A large amount of hydroxyl radicals are generated inside, and the organic matter is further oxidized and degraded, and the removal rate is 30-40%;
    将臭氧和紫外线组合氧化系统的出水回流至超声波和双氧水组合氧化系统，并使废水在超声波和双氧水组合氧化系统、臭氧和紫外线组合氧化系统中循环两次，使80％～85％的有机物被氧化去除；The effluent of the combined ozone and ultraviolet oxidation system is refluxed to the ultrasonic and hydrogen peroxide combined oxidation system, and the wastewater is circulated twice in the ultrasonic and hydrogen peroxide combined oxidation system, ozone and ultraviolet combined oxidation system, so that 80% to 85% of the organic matter is oxidized. Remove
    循环两次后，将臭氧和紫外线组合氧化系统的出水输入膜过滤系统，膜过滤系统由超滤系统和反渗透系统两部分组成，超滤产水进入反渗透系统进一步处理，反渗透系统的出水输入活性炭吸附装置，经活性炭吸附后的产水回用。After circulating twice, the effluent of the combined ozone and ultraviolet oxidation system is fed into the membrane filtration system. The membrane filtration system consists of an ultrafiltration system and a reverse osmosis system. The ultrafiltration produced water is further processed into the reverse osmosis system, and the effluent of the reverse osmosis system. The activated carbon adsorption device is input, and the produced water after adsorption by activated carbon is reused.
  2. 根据权利要求1所述的中等浓度有机工业废水的处理工艺，其特征在于，所述原始废水的Cod：5000～8000mg/L，Ph值：6～12，水量：10～35m3/h。The process for treating a medium-concentration organic industrial wastewater according to claim 1, wherein the raw wastewater has a Cod of 5000 to 8000 mg/L, a Ph value of 6 to 12, and a water amount of 10 to 35 m 3 /h.
  3. 根据权利要求2所述的中等浓度有机工业废水的处理工艺，其特征在于，所述废水在超声波和双氧水组合氧化系统中的停留时间为10～15分钟。The process for treating medium-concentration organic industrial wastewater according to claim 2, wherein the wastewater has a residence time of 10 to 15 minutes in the combined ultrasonic and hydrogen peroxide oxidation system.
  4. 根据权利要求3所述的中等浓度有机工业废水的处理工艺，其特征在于，所述废水在臭氧和紫外线组合氧化系统中的停留时间为 10～15分钟。The process for treating medium-concentration organic industrial wastewater according to claim 3, wherein the residence time of the wastewater in the combined oxidation system of ozone and ultraviolet light is 10 to 15 minutes.
  5. 根据权利要求4所述的中等浓度有机工业废水的处理工艺，其特征在于，所述超滤系统的浓水由生化法处理，后达标排放。The process for treating a medium-concentration organic industrial wastewater according to claim 4, wherein the concentrated water of the ultrafiltration system is treated by a biochemical method and discharged to a standard.
  6. 根据权利要求5所述的中等浓度有机工业废水的处理工艺，其特征在于，所述反渗透系统的浓水输入超声波和双氧水组合氧化系统进一步处理。The process for treating medium-concentration organic industrial wastewater according to claim 5, characterized in that the concentrated water input ultrasonic wave and the hydrogen peroxide combined oxidation system of the reverse osmosis system are further processed.
  7. 根据权利要求6所述的中等浓度有机工业废水的处理工艺，其特征在于，所述反渗透系统的出水为总水量的70％～80％。The process for treating medium-concentration organic industrial wastewater according to claim 6, wherein the effluent of the reverse osmosis system is 70% to 80% of the total water.
  8. 根据权利要求7所述的中等浓度有机工业废水的处理工艺，其特征在于，所述产水的Cod≤100mg/L。 The process for treating a medium-concentration organic industrial wastewater according to claim 7, wherein the water-producing Cod ≤ 100 mg/L.
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