A kind of catalytic hydrolysis pretreatment method for industrial park wastewater

Abstract

A catalytic hydrolysis pretreatment method for industrial park wastewater relates to the technical field of industrial wastewater treatment. In order to solve the problems of traditional industrial park wastewater pretreatment, the invention has poor pretreatment effect, cumbersome acid-base adjustment, large amount of oxidative pretreatment, large amount of sludge and unstable operation. Method: 1. Add packing and pretreated industrial wastewater into the catalytic reduction biological hydrolysis tank, add ozone catalytic packing and hydrogen peroxide into the ozone catalytic reaction tank, and pump the upper layer liquid of the industrial wastewater in the catalytic reduction biological hydrolysis tank to the ozone catalytic reaction Catalytic oxidation is carried out in the tank, and the industrial wastewater in the ozone catalytic reaction tank is returned to the catalytic reduction biological hydrolysis tank; the industrial wastewater flows into the flocculation sedimentation tank through the water outlet, the pH is adjusted to 7-8.5, polyacrylamide is added, and precipitation is completed to complete the industrial wastewater. Catalytic hydrolysis pretreatment. The invention can obtain a method for catalytic hydrolysis pretreatment of industrial park wastewater.

Description

technical field

[0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a catalytic hydrolysis pretreatment method for industrial park wastewater. Background technique

[0002] In recent years, as the country pays more and more attention to environmental protection issues, the requirements for effluent quality and effluent compliance rate of industrial park sewage treatment plants have become increasingly strict. Therefore, the problem of effluent compliance of industrial park sewage treatment plants has become the key restricting the sustainable development of industrial parks.

[0003] The wastewater in the industrial park mainly comes from the wastewater treated by the enterprises in the park to meet the takeover standard. The biochemical pollutants in the wastewater have been basically degraded completely in the sewage plant of the enterprise, and the remaining components are refractory substances and biological metabolites...

Examples

specific Embodiment approach 1

[0021] Embodiment 1: This embodiment is a method for catalytic hydrolysis pretreatment of wastewater in industrial parks, which is completed according to the following steps:

[0022] 1. First add the catalytic reduction filler and the biohydrolysis filler into the catalytic reduction biohydrolysis tank, and then add the pretreated industrial wastewater into the catalytic reduction biohydrolysis tank for degradation through the water inlet at the lower part of the catalytic reduction biohydrolysis tank;

[0023] 2. First add the ozone catalytic filler into the ozone catalytic reaction tank, then pump the upper layer liquid of the industrial wastewater in the catalytic reduction biological hydrolysis tank into the ozone catalytic reaction tank, and add hydrogen peroxide into the ozone catalytic reaction tank at the same time. Oxidation, the industrial wastewater in the ozone catalytic reaction tank flows back into the catalytic reduction biological hydrolysis tank from the water...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the pretreated industrial wastewater described in Step 1 is prepared according to the following steps: adding the industrial wastewater into the wastewater regulating tank, and adjusting the pH of the industrial wastewater to 6.5 to 7.5, the pretreated industrial wastewater is obtained; the hydraulic retention time in the wastewater conditioning tank is 8h, and the perforated aeration stirring method is used for stirring.

[0034] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the catalytic reduction filler described in step 1 is made of iron powder, copper powder, nickel powder, manganese powder and activated carbon powder after being mixed and soaked and then sintered. , the diameter is 2cm-4cm; the stacking height of the catalytic reduction filler in the catalytic reduction biological hydrolysis tank is 0.3m-0.5m, accounting for 5% to 8% of the volume of the catalytic reduction biological hydrolysis tank.

[0036] Other steps are the same as in the first or second embodiment.

technical field

[0001] The invention relates to the technical field of industrial wastewater treatment, in particular to a catalytic hydrolysis pretreatment method for industrial park wastewater. Background technique

[0002] In recent years, as the country pays more and more attention to environmental protection issues, the requirements for effluent quality and effluent compliance rate of industrial park sewage treatment plants have become increasingly strict. Therefore, the problem of effluent compliance of industrial park sewage treatment plants has become the key restricting the sustainable development of industrial parks.

[0003] The wastewater in the industrial park mainly comes from the wastewater treated by the enterprises in the park to meet the takeover standard. The biochemical pollutants in the wastewater have been basically degraded completely in the sewage plant of the enterprise, and the remaining components are refractory substances and biological metabolites...

Examples

specific Embodiment approach 1

[0021] Embodiment 1: This embodiment is a method for catalytic hydrolysis pretreatment of wastewater in industrial parks, which is completed according to the following steps:

[0022] 1. First add the catalytic reduction filler and the biohydrolysis filler into the catalytic reduction biohydrolysis tank, and then add the pretreated industrial wastewater into the catalytic reduction biohydrolysis tank for degradation through the water inlet at the lower part of the catalytic reduction biohydrolysis tank;

[0023] 2. First add the ozone catalytic filler into the ozone catalytic reaction tank, then pump the upper layer liquid of the industrial wastewater in the catalytic reduction biological hydrolysis tank into the ozone catalytic reaction tank, and add hydrogen peroxide into the ozone catalytic reaction tank at the same time. Oxidation, the industrial wastewater in the ozone catalytic reaction tank flows back into the catalytic reduction biological hydrolysis tank from the water...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the pretreated industrial wastewater described in Step 1 is prepared according to the following steps: adding the industrial wastewater into the wastewater regulating tank, and adjusting the pH of the industrial wastewater to 6.5 to 7.5, the pretreated industrial wastewater is obtained; the hydraulic retention time in the wastewater conditioning tank is 8h, and the perforated aeration stirring method is used for stirring.

[0034] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the catalytic reduction filler described in step 1 is made of iron powder, copper powder, nickel powder, manganese powder and activated carbon powder after being mixed and soaked and then sintered. , the diameter is 2cm-4cm; the stacking height of the catalytic reduction filler in the catalytic reduction biological hydrolysis tank is 0.3m-0.5m, accounting for 5% to 8% of the volume of the catalytic reduction biological hydrolysis tank.

[0036] Other steps are the same as in the first or second embodiment.

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