Boat domestic sewage treatment device

Abstract

The invention discloses a boat domestic sewage treatment device, which comprises a body and an air pump, wherein a biological selection region, an aerobic biochemical region, a precipitate clarification region, a middle water chamber and a clean water chamber are arranged in an inner cavity of the body, the biological selection region is communicated with the aerobic region through a through holewhich is arranged at the upper part of a separation plate and is provided with a filter screen, the aerobic biochemical region is communicated with the lower middle position of the precipitate clarification region, the precipitate clarification region is communicated with the middle water chamber in the top position of the precipitate clarification region, the bottom of the precipitate clarification region is communicated with the biological selection region through a sledge backflow pipe, the air pump is communicated with the sewage backflow pipe, the middle water chamber is communicated with a microfiltration membrane module water inlet gathering pipe through a cyclic cross-flow pump, microfiltration concentration liquid flows back into the biochemical selection region through a cross-flow opening, penetrating liquid is communicated with the microfiltration membrane module water inlet gathering pipe, the microfiltration concentration liquid of a microfiltration assembly flows back into the biochemical selection region through the cross-flow opening, and the penetrating liquid enters the clean water chamber. The structure is compact, the installation and the maintenance are convenient, and the treatment efficiency is high.

Description

technical field [0001] The invention relates to an enhanced treatment technology for domestic sewage on board ships, in particular to a treatment device for domestic sewage on ships that can be reused after sewage treatment. Background technique [0002] With the rapid growth of population and industrial development, the marine environment has been greatly damaged. In order to protect limited marine resources, countries around the world are actively taking measures to prevent and reduce marine pollution caused by ships. As far as the discharge of domestic sewage from ships is concerned, the IMO.MEPC.159 (55) resolution passed by the Marine Environmental Protection Committee under the International Maritime Organization of the United Nations on October 13, 2006, to the International Convention on the Prevention of Pollution promulgated on December 3, 1976 The emission standards in "MARPOL73 / 73" have been greatly adjusted. Among them, the index of discharge water is changed ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of low treatment efficiency and poor stability of the existing ship domestic sewage treatment device; to provide a ship domestic sewage treatment device; it has small volume, compact structure, convenient installation and maintenance; simple process flow and control program , Reliable; can meet the latest international pollution prevention convention discharge index requirements, has the advantages of high processing efficiency, high degree of integration, no need for special disinfection equipment, enhanced biological treatment, etc.

Images