Catalytic dehydration method for sludge

Abstract

The invention discloses a catalytic dehydration method for sludge. The catalytic dehydration method comprises the steps of putting the sludge to be treated into a catalytic oxidation device, then, thoroughly mixing the sludge to be treated with an oxidant, carrying out thorough catalytic oxidation under the action of electrocatalysis, and then, carrying out flocculation and pressure-filtration treatment on the sludge subjected to the catalytic oxidation, wherein the catalytic oxidation device comprises a catalytic oxidation chamber, a cathode, an anode and a direct-current power supply, the catalytic oxidation chamber is provided with a material inlet and a material outlet, and the cathode and the anode are connected with corresponding poles of the direct-current power supply and are arranged in the catalytic oxidation chamber; and the sludge to be treated is fed from the material inlet and is output from the material outlet. According to the catalytic dehydration method, secondary pollution is seldom generated, and the efficiency of energy is high; and reactor equipment is small in scale, the floor area is small, the startup and closedown of devices are convenient, and sterilizing and deodorizing actions are obvious.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a sludge treatment method. Background technique [0002] With the rapid development of economy and society and the gradual improvement of people's quality of life, the discharge of industrial wastewater and domestic wastewater is increasing day by day. Activated sludge method is a process commonly used in various sewage treatment plants at present. It has the characteristics of mature technology, stable process, high treatment efficiency, and low operating cost, but at the same time it will also produce a certain amount of excess sludge, and the amount of excess sludge Disposal costs account for more than 50% of the operating costs of the entire sewage treatment plant. [0003] According to China Water Network's "China Sludge Treatment and Disposal Market Analysis Report (2013 Edition)", by 2015, my country's annual surplus sludge (containing 80% moisture) output will exc...

AI Technical Summary

Problems solved by technology

The disadvantages are that the equipment structure is more complex, the current action time is limited, the current utilization efficiency is low, and the microstructure of the sludge is not effectively changed, the extracellular polymer is stripped, and the cell wall is damaged.

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