Continuous circulating pipe membrane bioreactor

Abstract

The invention discloses a continuous circulating pipe membrane bioreactor which comprises a reactor body, wherein at least one contact oxidation cabinet is arranged in the reactor body; the contact oxidation cabinet is connected with a circulating pipe membrane group through a water inlet pump; the circulating pipe membrane group at least comprises a pipe membrane and a circulating pump; the pipemembrane and the circulating pump are mutually connected in series through a backflow pipeline to form a circulating loop; a pipe cavity of the pipe membrane is communicated with a concentrate backflow pipe; a filtering cavity on the outer side of the pipe membrane is communicated with a discharge pipe; and when in work, the ratio V1 / V3 of the water inlet flow V1 flowing through the water inlet pump to the filtered clear liquid flow V3 of the circulating pipe membrane group is 2-10, and the ratio V2 / V3 of the circulating flow V2 flowing through the inner cavity of the pipe membrane to the filtered clear liquid flow V3 is 2-50. The pipe membrane bioreactor disclosed by the invention has the advantages of high efficiency in removing organic pollutants, difficulty in polluting a filter membrane and long service life, and is suitable for centralized treatment of domestic sewage of the ocean engineering equipment and ships as well as cities, houses or other people-intensive areas.

Description

technical field

[0001] The invention relates to technical equipment for sewage treatment, in particular to a membrane biological reaction device for treating domestic sewage through the combination of biological treatment and membrane separation technology. Background technique

[0002] Domestic sewage is the sewage produced in the process of human life and production, and it is the main source of pollution of water bodies. It is mainly feces and washing sewage. Domestic sewage contains a large amount of organic matter, such as cellulose, starch, sugar, etc., and often contains pathogenic bacteria, viruses and parasite eggs. The disorderly discharge of urban residential sewage not only aggravates the shortage of water resources, but also directly affects people's living environment and water pollution; the discharge of domestic sewage from marine engineering platforms and ships seriously affects the marine environment. For this reason, people are also seeking effective ways...

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