A20+MBR processing device

Abstract

The invention discloses an A20+MBR processing device, belongs to the field of environmental protection, and particularly relates to the field of wastewater biotreatment and reuse. The A20+MBR processing device includes an water inlet, an anaerobic pool, an anoxic pool, an aerobic pool, a membrane pool, an MBR membrane component, a spherical filler, an MBBR filler, a water outlet, an aeration head, an aeration branch pipe, an aeration main pipe, a gas adjusting valve, aeration equipment, a sludge reflux pipe, a nitrifying liquid reflux pipe, a biological flow bed; the MBR membrane component is installed in the membrane pool; the nitrifying liquid reflux pipe is installed between the upper portion of the aerobic pool and the upper portion of the anoxic pool; the sludge reflux pipe is installed between the bottom of the membrane pool and the bottom of the anaerobic pool. The A20+MBR processing device has the advantages that the efficient solid liquid separation is achieved; the effluent water quality is good and stable; the remaining sludge amount is small; the covering area is small; a secondary settling tank is not needed; process equipment is concentrated; the device can be widely used in the field of urban and rural sewage treatment.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to the fields of sewage treatment, water resource filtration biological treatment and reuse. Background technique [0002] In the field of environmental protection, especially sewage treatment is an important link in today's urban and rural water supply and drainage projects. The renewal and upgrading of existing urban sewage treatment plants, especially water plants whose effluent water quality is difficult to meet the standard or the treatment flow has increased sharply and the area cannot be expanded; no drainage pipes Residential areas, tourist resorts, scenic spots, etc.; areas or places that require sewage reuse, such as hotels, car washes, airliners, and mobile toilets, all require sewage treatment equipment. The existing sewage treatment equipment processes include: A2O (anaerobic-anoxic-aerobic activated sludge method) biological nitrogen and phosphorus r...

AI Technical Summary

Problems solved by technology

Anaerobic tank, using anaerobic bacteria to degrade organic matter and release phosphorus under anaerobic conditions; anoxic tank, nitrification solution is returned to the anoxic tank, and facultative bacteria degrade organic matter under anoxic conditions while reacting nitrate Nitrification, so as to remove total nitrogen; aerobic tank, aerobic bacteria completely degrade organic matter, ammonia nitrogen, and absorb phosphorus under aerobic conditions; this process basically uses the action of microorganisms to remove pollutants, so after biochemical treatment, it is necessary to connect to a secondary sedimentation tank , for mud-water separation. The secondary settling tank uses gravity to allow microorganisms to settle naturally in the secondary settling tank; Not only will it affect the natural settlement of the sludge, but the settled sludge at the bottom of the secondary settling tank will also rise due to the agitation of the water flow, resulting in an increase in suspended matter in the effluent; on the other hand, the sludge settled at the bottom of the secondary settling tank, Under long-term anoxic conditions, the sludge will undergo denitrification, generate air bubbles in the water, and drive the sludge at the bottom to float up, which will increase the suspended solids in the effluent of the system, and the water quality will not meet the standard

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