Handling method for advanced purification of little-volume refractory wastewater and operation equipment

Abstract

The invention relates to a treatment method for small water quantity refractory wastewater deep purifying and utilizing. The method comprises the following steps: step one, pre-filtrating wastewater is performed firstly; step two, the pH value of the wastewater is adjusted to 3-5 to ensure the wastewater to present subacidity; step three, the wastewater flows into a spout-fluid bed reaction tower, the wastewater is processed through a micro-electrolysis method, and micro-electrolysis composite functional material is utilized in the micro-electrolysis method; step four, the wastewater is processed through a photo-assisted fenton catalytic oxidation method; step five, the pH value of the wastewater is adjusted to 6.8-7.8, and then the wastewater is processed through strengthen flocculation method; step six, the wastewater flows to a microwave catalysis reactor, and is processed through a microwave catalytic oxidation method; step seven, the wastewater flows into a UV photochemical reactor, and is processed through the UV photocatalysis; step eight, the wastewater flows into a gravitation filter, and the wastewater can be clarified to meet the requirement of the reuse water quality. The invention also provides equipment for performing the treatment method.

Description

technical field [0001] The invention relates to a treatment method for purification and reuse of wastewater and equipment for implementing the method, in particular to a method for purification and reuse of refractory wastewater and equipment for implementing the method. Background technique [0002] Industry is the pillar industry of the national economy. While the development of industry brings wealth to the country and people, it also brings problems of environmental pollution and resource shortage. Big problem ahead. Among them, a large amount of refractory wastewater produced in the process of industrial production pollutes the environment, and the refractory wastewater cannot be reused, which also exacerbates the shortage of water resources. [0003] Refractory wastewater traditionally refers to wastewater that is difficult to treat with conventional physical-chemical-biochemical methods, specifically refers to printing and dyeing, printing, dye production wastewater ...

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Problems solved by technology

[0025] The technical problem to be solved in the present invention is: to overcome the problems of the traditional refractory wastewater purification and reuse technology, such as relatively simple means, high cost, many sediment residues, and difficulty in engineering scale-up, thereby proposing a low-cost, less sediment residue, and easy-to-engineer Treatment method for deep purification and reuse of amplified small amount of refractory wastewater and equipment for implementing the method

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