Anaerobic-anoxic-aerobic-film component treatment method

Abstract

The A20+MBR treatment method belongs to the field of environmental protection, especially the field of sewage filtration biological treatment and reuse; A20+MBR treated sewage enters the anaerobic pool through the water inlet, and the sewage is filtered through the biological fluidized bed in the anaerobic pool 2; anaerobic The pre-filtered sewage in the pool 2 enters the anoxic pool 3, and the sewage is filtered through the biological fluidized bed in the anoxic pool 3; Flow state bed filtration; the sewage filtered by the aerobic pool 4 enters the membrane pool 5, and the sewage is filtered by the MBR membrane module 6 in the membrane pool 5; the sewage filtered by the MBR membrane module 6 in the membrane pool 5 passes through under the action of negative pressure Water outlet 9 gets rid of. Realize high-efficiency solid-liquid separation, high-quality and stable effluent water quality; less residual sludge, small footprint, no need for secondary settling tanks, centralized process equipment; can be widely used in urban and rural sewage treatment fields.

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

Images