An aerobic granular sludge reaction tank-biofilm sewage treatment system

Abstract

The invention discloses an aerobic granular sludge reaction chamber and biological membrane sewage treatment system which comprises an aerobic granular sludge reaction chamber and a service reservoir. A water inlet pump is arranged at the bottom of the service reservoir, the water inlet pump is communicated with the lower portion of the aerobic granular sludge reaction chamber through a water inlet pipeline, a three-phase separator is arranged in the aerobic granular sludge reaction chamber, a biological membrane packing layer is arranged at the top of the aerobic granular sludge reaction chamber, a lifting pipe of the three-phase separator penetrates through the biological membrane packing layer and is connected with a gas-liquid separating chamber, the gas-liquid separating chamber is connected with a water distributing system, the water distributing system is located over the biological membrane packing layer, aeration heads are arranged at the bottom of the aerobic granular sludge reaction chamber and are connected with an air blower, a water outlet pipe is arranged above the aerobic granular sludge reaction chamber and below the biological membrane packing layer, and a sludge discharge pipe is arranged at the bottom of the aerobic granular sludge reaction chamber. According to the aerobic granular sludge reaction chamber and biological membrane sewage treatment system, other aeration equipment is not needed for providing dissolved oxygen for microorganisms on the biological membrane packing layer, and compared with other sewage treatment technologies, the aerobic granular sludge reaction chamber and biological membrane sewage treatment system lowers cost and meanwhile improves the treatment effect.

Description

Technical field [0001] The invention belongs to the field of sewage treatment and purification equipment, and specifically relates to an aerobic granular sludge reaction tank-biofilm sewage treatment system. Background technique [0002] The current biological sewage treatment technology generally has the problems of long process flow, large capital investment, high operating cost, large structure, and large sludge output. This makes my country's sewage treatment efficiency low and water pollution is increasing. Aerobic granular sludge is a self-immobilized particle that spontaneously forms under aerobic conditions discovered in recent years. It has a compact structure, good sedimentation performance, large biomass, good biological activity, and strong impact resistance. , And can be used to treat sewage containing refractory substances and toxic substances. Compared with the traditional activated sludge method with large area and low treatment efficiency, the aerobic granular s...

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an aerobic granular sludge reaction tank-biofilm sewage treatment system for the problem of insufficient utilization of dissolved oxygen by aerobic granular sludge, so that the remaining dissolved oxygen can be obtained Fully utilized, it provides enough dissolved oxygen for the microorganisms in the biofilm packing layer to consume organic matter, and saves the aeration equipment required for the biofilm packing layer. While ensuring the improvement of effluent water quality, it also saves energy and reduces The role of cost

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