Automatic control device for self-heating high-temperature micro-aerobic stabilization and recycling of sludge

Abstract

The invention discloses anautomatic control device forself-heating high-temperature micro-aerobic stabilization and recycling of sludge. The device is characterized in that a reaction device is covered with a thermal insulation material, the interior of the reaction device is divided into two reaction chambers by a partition plate, a pressure system is arranged at the top of the outer side wall of one reaction chamber, a filtering system is arranged at the bottom of the outer side wall of the other reaction chamber, a jet aeration system is arranged at the bottom of the other reaction chamber, and a monitoring system is arranged at the top of the outer side wall. Sludge in the reaction device is pushed to circulate between the two reaction chambers based on jet aeration, the metabolic acid production rate and the consumption rate in the sludge digestion process are fed back through the online monitoring system, and opening and closing of the jet aeration system, the valves on the partition plates, the pressure system and the filtering system are automatically controlled; the solid-liquid separation efficiency of the bottom sludge is improved through air pressure application at the top of the closed reaction chamber, so that the sludge digestion process is accelerated, the carbon source is recycled, and efficient stabilization and resource automatic control of the sludge are realized.

Description

technical field [0001] The invention relates to the technical field of environmental engineering for sludge stabilization and recycling, in particular to an automatic control device for sludge self-heating, high-temperature micro-aerobic stabilization and recycling. Background technique [0002] The sludge self-heating high-temperature micro-aerobic digestion technology has the advantages of high sludge stabilization efficiency, no need for external energy during the self-heating heating process, and good pathogenic bacteria inactivation effect. However, due to the need for self-heating and heating, the high concentration of feed sludge and the limitation of aeration rate, the oxygen supply will be insufficient in the early stage of the sludge self-heating high-temperature micro-aerobic digestion process, and the digestion system will generate and accumulate a large amount of volatile Fatty acids inhibit microbial metabolic activities in the digestive system. However, volat...

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Problems solved by technology

However, due to the need for self-heating and heating, the high concentration of feed sludge and the limitation of aeration rate, the oxygen supply will be insufficient in the early stage of the sludge self-heating high-temperature micro-aerobic digestion process, and the digestion system will generate and accumulate a large amount of volatile Fatty acid, which inhibits the metabolic activities of microorganisms in the digestive system

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