Method for treating ship grey water by facultative membrane bioreactor technology

Abstract

The invention discloses a method for treating ship grey water by a facultative membrane bioreactor technology, and relates to the technical field of ship grey water treatment. The problem of sludge in the membrane bioreactor is solved. The method specifically comprises the following steps: ship grey water enters a membrane treatment chamber, the grey water is pretreated through an ultrafiltration membrane assembly in the membrane treatment chamber, the grey water is pumped into a pressure water tank under the action of a self-priming pump, the pretreated grey water in the pressure water tank enters a facultative membrane bioreactor through a booster pump, the interior of the facultative membrane bioreactor is divided into membrane module areas of an upper group and a lower group, the upper part is an aerobic type membrane module, the lower part is a mixed type membrane module, the grey water firstly enters the upper membrane module, and the aerobic type microorganisms carry out aerobic nitration and aerobic phosphorus uptake on the grey water. The sewage amount is greatly reduced, the treated distilled water can be recycled, the treatment process is simple and efficient, secondary pollution is avoided, and dirt accumulation on the surface of the membrane is effectively prevented.

Description

technical field [0001] The invention relates to the technical field of treating ship gray water, in particular to a method for treating ship gray water using facultative membrane bioreactor technology. Background technique [0002] As a means of transportation in inland river shipping, ships are also a source of mobile pollution. The impact of domestic sewage discharge from ships on inland river water environment, lakes, and reservoirs cannot be ignored with the increase in the number of ships. Ship domestic sewage refers to the waste water and waste formed in the daily life of the crew, passengers and animals carried by the ship. Waste water and waste from ship toilets, hospital rooms, and spaces carrying live animals are usually referred to as "black water", while waste water and waste from galleys, laundry rooms, and lavatories, etc. are called "grey water". These domestic sewage contain a large amount of organic waste, and carry various pathogenic microorganisms and par...

AI Technical Summary

Problems solved by technology

[0003] However, when the existing membrane bioreactor treats sewage, there is a problem of sludge retention, and the retention of sludge will reduce the treatment efficiency of the membrane bioreactor, making the internal microbial reaction poor, and the quality of organic matter removal in sewage is poor. Therefore, need badly a kind of method of facultative membrane bioreactor technology treatment ship gray water

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