Composite membrane bioreactor for mustard mustard wastewater treatment

Abstract

The invention discloses a compound membrane bioreactor for treating tuber mustard waste water, which is an integrated reactor formed by combining a biomembrane process and active sludge process combined compound bioreaction area and membrane separation. The reactor consists of a membrane suspending area, a membrane piece area, a water feeding system, an aeration system, a water discharge system and self-control equipment. Attached growth biomembrane and suspended active sludge, which are two coexisting microorganisms, cooperate to remove the pollutants from the tuber mustard waste water; and the purified waste water is subjected to sludge and water separation by a membrane and is discharged after reaching standards. The sludge expansion in a salt-containing waste water active sludge treatment process is inhibited by means of filling a filler in the bioreaction area and using the membrane separation component in place of the conventional biological treatment. The reactor has the characteristics that: the microorganism concentration is high; the population structure is diversified; the food chain is long; the impact load resistance is high; the treatment organic load is high; the biological nitrogen and phosphor removal capacity is high; membrane pollution can be relieved and can be controlled easily; the quality of effluent is high; the project investment and operation cost arelow; and the like.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to the technology for treating pickled mustard wastewater by a composite membrane bioreactor. Background technique [0002] The present invention mainly takes mustard mustard salt-containing comprehensive wastewater as the treatment object to carry out research. In my country, only about 35 million tons of mustard mustard wastewater is produced every year in the Three Gorges Reservoir area. The characteristics of high organic matter and high organic matter have a great impact on the water environment of the reservoir area, and the corresponding pollution prevention and control work has not progressed satisfactorily due to the lack of practical technologies. At present, the waste water produced in many food industrial parks has not been effectively treated and discharged in an orderly manner, causing serious pollution of secondary rivers, drinking water sources in...

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Problems solved by technology

[0002] The present invention mainly takes mustard mustard salt comprehensive wastewater as the treatment object to carry out research. In my country, only about 35 million tons of mustard mustard wastewater is produced every year in the Three Gorges reservoir area. This type of wastewater has a large amount of water, complex water quality, high salt, high nitrogen, phosphorus and high organic matter, and has a great impact on the water environment of the reservoir area. However, due to the lack of practical technology, the corresponding pollution prevention and control work has not progressed satisfactorily.

At present, the wastewater produced in many food industrial parks has not been effectively treated and discharged in an orderly manner, causing serious pollution of secondary rivers, drinking water sources in villages and towns, and farmland soil along the Three Gorges Reservoir area, posing a serious threat to the water environment of the Three Gorges Reservoir area. It is one of the bottleneck problems restricting the scale development of characteristic industries in the reservoir area. Therefore, the development of suitable sewage treatment technology is an urgent task to solve the pollution control of food industrial parks, which is of great significance

[0003] By searching the patent retrieval database of the State Intellectual Property Office of China, the following patents have been issued since 1985 in the field of saline wastewater treatment: Wang Shanquan and others applied for "High High-efficiency treatment process for saline wastewater" patent (CN101054232), which is a technology for high-efficiency treatment of high-saline wastewater by forming aerobic granular sludge in a sequencing batch reactor. It is rare, and there are still some problems in the maturity of granular sludge cultivation technology under high-salt conditions; Guilin Institute of Technology applied for a high-salinity oil recovery wastewater treatment process with "ABR+SBR" as the main biological treatment structure (CN101007683); the national The Tianjin Institute of Seawater Desalination and Comprehensive Utilization of the Oceanic Bureau has applied for a membrane biological reaction treatment method for saline wastewater (CN031443796). Organic wastewater, there are still some key technical problems

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