Low-temperature plasma device for wall-breaking digestion of excess sludge

Abstract

The invention discloses a low-temperature plasma device for wall-breaking digestion of excess sludge, which is characterized in that a box body of the device is obliquely arranged, so that the excess sludge flows from a sludge inlet to a sludge outlet under the action of gravity, continuous treatment of the excess sludge is realized, and additional energy consumption is not needed; and the automatic feedback control unit is used for controlling and adjusting the inclination angle of the box body and / or the operating parameters of the plasma generation unit and / or the operating parameters of the air inlet unit based on real-time monitoring of the sludge at the outlet, so that intelligent automatic continuous treatment of the residual sludge is realized.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a low-temperature plasma device for wall breaking and digestion of excess sludge. Background technique [0002] With the continuous acceleration of my country's urbanization process, industrial and residential water consumption is increasing year by year, and the discharge of industrial sewage and domestic wastewater is also increasing. Activated sludge process is the most widely used sewage treatment technology, and its additional product—residual sludge has also increased significantly. Excess sludge will cause organic pollution, pathogenic microorganism pollution, heavy metal pollution, salt pollution, etc. to the environment, posing threats to the environment and humans. [0003] Sludge anaerobic digestion and sludge dewatering are currently the most widely used sludge reduction treatment technologies, but because a large amount of organic matter in sludge is coated by extrem...

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Problems solved by technology

[0003] Sludge anaerobic digestion and sludge dewatering are currently the most widely used sludge reduction treatment technologies, but because a large amount of organic matter in sludge is coated by extremely stable extracellular polymers (EPS) and cell walls (membranes), it is difficult to The release and utilization of the anaerobic digestion and hydrolysis stage are limited to a certain extent; the moisture contained in the sludge includes the moisture existing in the gap between the sludge flocs (interstitial water), the moisture existing due to the capillary action between sludge particles (capillary water) ), moisture adsorbed on the surface of sludge particles (adsorbed water), and internally bound water that is chemically bonded to sludge particles

Conventional mechanical dewatering can only remove interstitial water and part of capillary water in sludge, and the dehydration effect is poor

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