Tubular falling film reactor catalytic activation persulfate treatment system and operation process

Abstract

The invention discloses a tubular falling film reactor catalytic activation persulfate treatment system and an operation process, and belongs to the technical field of industrial sewage treatment. The system comprises a reactor, a water inlet unit, a water outlet unit and a control device. The reactor comprises a tubular device and a falling film reaction zone, the water inlet unit and the water outlet unit are both communicated with the reactor, the water inlet unit comprises a water inlet pipe, a water inlet pump and a water distribution pipeline, the water outlet unit comprises a second water outlet pipe and a first water outlet pipe, and the water inlet unit is connected with the tubular device of the reactor. The control device comprises a first COD online detector, a second COD online detector, a first control valve, a second control valve, a third control valve, a first persulfate adder and a second persulfate adder. Intelligent control and membrane catalytic activation advanced oxidation are coupled, and degradation-resistant wastewater is simply, conveniently and effectively treated.

Description

technical field [0001] The invention relates to a catalytically activated persulfate treatment system and an operating process of a tubular falling film reactor, belonging to the technical field of industrial sewage treatment. Background technique [0002] With the acceleration of industrialization, the paper industry has become an important pillar industry in my country's national economy with the characteristics of circular economy. According to statistics, my country's annual paper production reaches 125 million tons, with an output value of 1.4 trillion yuan, ranking first in the world. However, papermaking industrial wastewater is one of the six major industrial pollution sources in my country, and its discharge accounts for more than 30% of industrial wastewater discharge, and chemical oxygen demand (COD) discharge accounts for more than 34%. Papermaking wastewater pollutants have poor biodegradability, complex components, toxic effects on microorganisms, high chroma, ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a tubular falling film reactor catalytic activation persulfate treatment system and operating technology, which solves the energy consumption of activation methods such as heat, ultraviolet light, and ultrasonic waves in the current persulfate activation method. High, harsh reaction conditions; alkali activation needs to adjust the pH of the system, there is a risk of corrosion of equipment; transition metal ion activation requires complex post-treatment to avoid secondary pollution

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