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A stirred tank membrane reactor for wastewater treatment and wastewater treatment method using the reactor

A technology for wastewater treatment and membrane reactor, applied in chemical instruments and methods, water/sewage treatment, oxidized water/sewage treatment, etc. Simple, easy to make, easy to assemble and disassemble

Active Publication Date: 2020-02-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This common reaction device has disadvantages such as low catalyst contact efficiency, high leaching concentration of active components, and the need for secondary separation of the catalyst after the reaction is completed.

Method used

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  • A stirred tank membrane reactor for wastewater treatment and wastewater treatment method using the reactor
  • A stirred tank membrane reactor for wastewater treatment and wastewater treatment method using the reactor
  • A stirred tank membrane reactor for wastewater treatment and wastewater treatment method using the reactor

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Experimental program
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Effect test

Embodiment 1

[0034] A stirred tank membrane reactor for waste water treatment, comprising a stirred tank, a stirring shaft located in the stirred tank and a stirring paddle installed on the stirring shaft, the stirring paddle is equipped with a membrane catalyst. The stirring tank and the stirring paddle are detachably connected, and the large-size stirring paddle can be conveniently put into it. The stirring tank includes a detachable and sealed tank cover and tank body. There are four ports on the tank cover, temperature control port, condensation port, sampling port and stirring port, which are used to load the temperature control device, condensation device and sampling device respectively. and for the passage of the stirring rod. The stirring rod is made of PTFE-coated stainless steel, which can be connected to various stirring devices. The stirring device is connected with the stirring shaft through the stirring rod, and the stirring device drives the stirring shaft to rotate; the f...

Embodiment 2

[0039] In this embodiment, except for the membrane catalyst, the same reactor as in Embodiment 1 is used.

[0040]Also, 1000 mL of 1 g / L phenol solution was used as simulated wastewater for the membrane stirred tank reaction. A Cu-ZSM-5 molecular sieve membrane with a Cu loading of 10% was used as a heterogeneous Fenton-like catalyst. Four pieces of the membrane catalyst were loaded on four stirring paddles and placed in a reactor for catalytic oxidation reaction. Also use 5.1g / L hydrogen peroxide as a green oxidant to oxidize and degrade phenol wastewater. The reaction conditions are: temperature 80° C., normal pressure, stirring speed 200 rpm. Similarly, high-performance liquid chromatography was used to test the concentration of phenol, the concentration of hydrogen peroxide was measured by iodometric method, and the conversion rate of total organic carbon was measured by TOC measuring instrument. The result is as Figure 6 As shown, the conversion rate of phenol reached...

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Abstract

The invention relates to a stirring tank membrane reactor for wastewater treatment. The stirring tank membrane reactor comprises a stirring tank, a stirring shaft and a stirring paddle, wherein the stirring paddle capable of loading a membrane adsorbent or a membrane catalyst is detachably mounted on the stirring shaft; the stirring shaft is positioned in the stirring tank. The invention further relates to a wastewater treatment method adopting the stirring tank membrane reactor for the wastewater treatment. The method is a wet type catalytic peroxide reaction; hydrogen peroxide is used as an oxidant, with the concentration of 100 to 6,000 mg / L; the reaction pressure is normal pressure, the temperature is 30 to 90 DEG C, and the stirring speed is 100 to 600 r / min; wastewater to be treated is phenol-containing wastewater, with the concentration of 100 to 5,000 mg / L. The stirring tank membrane reactor for the wastewater treatment is simple in structure and convenient to manufacture and operate, and belongs to the technical field of organic wastewater treatment.

Description

technical field [0001] The invention relates to an organic wastewater treatment technology, in particular to a stirred tank membrane reactor for wastewater treatment and a wastewater treatment method using the reactor. Background technique [0002] Organic wastewater, especially aromatic organic wastewater, such as phenol, chlorophenol and nitrophenol, has the characteristics of a wide range of sources, high toxicity and difficult to degrade. These organic wastewaters come from various industrial processes such as tar factories, gasoline factories, pharmaceutical factories, etc. At the same time, aromatic organic compounds are difficult to biodegrade and will exist in nature for a long time, which is very harmful to humans, animals and plants. [0003] The degradation methods of organic wastewater include biodegradation, physical separation and chemical oxidation. [0004] Biodegradation of organic wastewater requires the use of biological colonies, which can only degrade ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/72C02F101/34
CPCC02F1/722C02F1/725C02F2101/345C02F2305/026
Inventor 张会平蒋松山鄢瑛
Owner SOUTH CHINA UNIV OF TECH