A high-efficiency catalytic sodium hypochlorite reclaimed water treatment process based on a composite catalytic bed

Abstract

The invention discloses a composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimed water treatment system. The system comprises an oxidation tower internally provided withan activated carbon catalyst bed layer and a molecular sieve catalyst bed layer. The invention further discloses a composite catalyst bed layer based efficient catalytic sodium hypochlorite reclaimedwater treatment process. A sodium hypochlorite activating effect of a catalyst bed layer is realized, the content of refractory organics in reclaimed water is effectively decreased, and deep treatmentof reclaimed water is realized. Catalyst utilization efficiency is greatly improved, sodium hypochlorite oxidation effects are remarkably improved, mechanical strength and surface antifouling performance are both improved effectively, catalyst loss in a utilization process is avoided, and stability of the process is effectively improved. By adoption of the process, catalyst utilization efficiencyis completely guaranteed, the catalyst bed layer can be used for treatment of various types of urban reclaimed water, a catalyst utilization period is prolonged, and applicability of the process is greatly improved.

Description

technical field

[0001] The invention relates to a sodium hypochlorite reclaimed water treatment system, in particular to a high-efficiency catalytic sodium hypochlorite reclaimed water treatment system based on a composite catalytic bed layer and a process thereof, belonging to the technical field of reclaimed water treatment. Background technique

[0002] As more and more water bodies are polluted, and society's demand for water is increasing, therefore, reuse of reclaimed water has become an important way to solve the current problem of water use. However, the reclaimed water is usually the effluent of the biological pool, which meets the secondary discharge standard. There will still be certain pollutants in the reclaimed water. These pollutants are usually mainly organic substances that are difficult to biodegrade, and such organic substances will affect the subsequent use of reclaimed water. At present, due to the lack of efficient and cheap removal methods, it will hav...

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