Self-air flotation high-efficiency anaerobic bioreactor and method thereof

Abstract

The invention discloses a self-gas-flotation efficient anaerobic bioreactor and a method thereof. The anaerobic bioreactor comprises a biological reaction zone and a gas-flotation separation zone, the biological reaction zone comprises a water distribution system and a biological reaction chamber, the water distribution system is provided with a base cone, a back flow pipe outlet and a lower sludge discharge pipe, and the biological reaction chamber is provided with sampling openings, an internal circulation diaphragm plate, a center flow-rising pipe and flow-falling pipes; the gas-flotation separation zone comprises a diversion system and a residue removing and separating system, the diversion system is provided with a water inlet pipe and a spiral diversion barrel, and the residue removing and separating system is provided with a gas-liquid separation chamber, a stretching type residue scraping device, a residue discharge weir, a residue collection tank, a residue discharge pipe, a gas collection chamber, a flow-falling chamber, a solid-liquid separation chamber, a water outlet pipe, a biogas exhaust pipe, a back flow pipe suction opening and a back flow pipe. The self-gas-flotation efficient anaerobic bioreactor integrates a gas flotation method and anaerobic biological treatment into a whole, by means of upper portion water feeding and the spiral diversion barrel, coagulation can be conducted on colloid in water by means of self-generated extracellular polymeric substances, gas flotation is conducted on suspended substances by means of biogass, the treatment efficiency is improved, the effluent quality is improved, and operating energy consumption is reduced.

Description

technical field [0001] The invention belongs to the field of environmental protection equipment, and in particular relates to a self-floating high-efficiency anaerobic bioreactor and a method thereof. Background technique [0002] Anaerobic bioreactor is a process of using anaerobic microorganisms to convert organic matter in wastewater into biogas under anaerobic conditions, thereby achieving water purification. Because the anaerobic bioreactor has the characteristics of low energy consumption and high efficiency, this type of reactor has been widely used in the field of wastewater treatment. After years of development, anaerobic bioreactors have launched many products, represented as: the first generation of anaerobic bioreactors, mainly traditional anaerobic digesters and high-speed digesters; the second generation of anaerobic bioreactors, mainly upstream Type sludge bed reactor and anaerobic biofilter reactor; the third generation anaerobic bioreactor, mainly anaerobic...

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