Wastewater preprocessing catalytic reduction reactor and wastewater preprocessing system and technology thereof

A reactor and pretreatment technology, applied in water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem of reduced degree of hardening, easy hardening of the reactor, and large amount of sludge produced. and other problems, to achieve the effect of improving biodegradability, avoiding production stoppage, and reducing chroma.

Pending Publication Date: 2020-04-10
SHANGHAI SHIYUAN ENVIRONMENT PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the iron-carbon method also has defects such as large acid consumption, large iron consumption, large sludge production, and easy hardening of the reactor.
In response to these defects, some people proposed to use the iron-copper method (that is, copper replaces carbon as a catalyst), which has the advantages of reducing the consumption of acid and iron, greatly reducing the amount of sludge produced compared with the iron-carbon method, and greatly reducing the degree of compaction, but there are Copper cannot be recycled

Method used

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  • Wastewater preprocessing catalytic reduction reactor and wastewater preprocessing system and technology thereof
  • Wastewater preprocessing catalytic reduction reactor and wastewater preprocessing system and technology thereof

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Experimental program
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Effect test

Embodiment 1

[0027] see figure 1 , in one embodiment, a kind of waste water pretreatment catalytic reduction reactor, can handle the industrial waste water (such as printing and dyeing waste water, dye waste water, electroplating waste water, etc.) , rotary cutting mixed flow aerator 5, rolled iron-aluminum mixture, catalyst frame (such as figure 2 Shown), the reactor body 11 includes a reaction zone 8 and a sludge settling zone 10; the sludge settling zone 10 is at the bottom of the reactor body 11, and the reaction zone 8 is at the top of the sludge settling zone 10;

[0028] The lower part of the reaction zone 8 is provided with a raw water inlet 1, and the upper part of the reaction zone 8 is provided with a water outlet 3. The catalyst frame is set in the reaction zone 8, and the rolled iron-aluminum mixture is placed in the catalyst frame. 5 is arranged at the bottom of the reaction zone 8, and the inlet pipe 6 of the rotary cutting mixed-flow aerator 5 passes through the catalyst ...

Embodiment 2

[0036] A wastewater pretreatment system can be used to treat industrial wastewater containing refractory and toxic organic matter (such as printing and dyeing wastewater, dye wastewater, electroplating wastewater, etc.) Reduction reactor, sedimentation tank, gas supply device, wastewater stirring tank;

[0037] Among them, the wastewater stirring tank is connected to the raw water inlet 1 of the reactor, the gas supply device is connected to the inlet pipe 6 of the rotary shear mixed flow aerator 5 in the reactor, and the water outlet 3 of the reactor is connected to the sedimentation tank.

[0038] Use the treatment process of the waste water treatment system in embodiment 2, comprise catalytic reduction and coagulation sedimentation;

[0039] Catalytic reduction further includes: the waste water to be treated enters the reactor from the raw water inlet 1 after adding acid in the waste water stirring tank to adjust the pH, and a reduction reaction occurs in the reactor. After ...

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Abstract

The invention discloses a wastewater preprocessing catalytic reduction reactor and a wastewater preprocessing system and technology thereof. The reactor comprises a reactor body, a rotary-cut mixed flow aerator, a rolled iron-aluminum mixture, and a catalyst framework. The reactor body comprises a reaction area and a sludge precipitation area. The sludge precipitation area is arranged on the bottom of the reactor body. The lower part of the reaction area is provided with a raw water inlet. The upper part of the reaction area is provided with a water outlet. The catalyst framework is arranged in the reaction area. The rolled iron-aluminum mixture is arranged in the catalyst framework. The rotary-cut mixed flow aerator is arranged on the bottom of the reaction area. The air inlet pipe of therotary-cut mixed flow aerator penetrates the catalyst framework and is connected to an air supply device. The bottom of the sludge precipitation area is provided with a mud discharge pipe. The provided catalytic reduction reactor can still convert degradation-resistant, macromolecular, harmful, and toxic substances in wastewater into easily degradable, micromolecular, nontoxic, and harmless substances even if the pH value is high; the heavy metal ions are reduced and removed, and the wastewater can be better biochemically processed.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a wastewater pretreatment catalytic reduction reactor, a wastewater pretreatment system and a process thereof. Background technique [0002] Industrial wastewater containing refractory and toxic organic matter (such as printing and dyeing wastewater, dye wastewater, electroplating wastewater, etc.) and landfill leachate are often treated with iron-carbon internal electrolysis as a biological pretreatment process. This technology integrates redox, flocculation adsorption, catalysis, complexation and electrodeposition, etc. It can not only transform toxic and harmful substances in wastewater, effectively improve the biodegradability of wastewater, but also play a role in chemical phosphorus removal and enhanced biological nitrogen removal. Effect. [0003] However, the iron-carbon method also has defects such as large acid consumption, large iron consumpti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F103/06C02F101/20
CPCC02F1/4678C02F1/5281C02F2103/06C02F2101/20
Inventor 张东曙邱立俊李文贞嵇逸秋
Owner SHANGHAI SHIYUAN ENVIRONMENT PROTECTION TECH
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