Marine domestic sewage treatment process and vacuum discharge and treatment system

Abstract

The invention discloses a marine domestic sewage treatment process belonging to the technical field of sewage treatment and discharge. The marine domestic sewage treatment process comprises the following steps: (1) collecting sewage by a vacuum collection system, and achieving the discharge and transport by utilizing the pressure difference inside and outside the system; (2) crushing and thinning large granular suspended matters by a crushing pump, filtering by a grid and then conveying into a sewage tank; (3) conveying to a fur collector by the pump to remove furs and small granular suspended matters; and (4) degrading by aerobic bio-degradable bacteria, filtering by multiple groups of hollow micropore membrane reactors, then discharging into a sterilizing device, and finally discharging to the outside. The invention further discloses a marine domestic sewage vacuum discharge and treatment system. The invention has simple treatment process, not only saves space and water, has compact arrangement, safety and sanitation as well as easy maintenance, but also decreases the influence of the swing of a marine body on the water quality, and has high pollutant degradation efficiency and directly-reused discharged water.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment and discharge, and in particular relates to a ship domestic sewage treatment process and a vacuum discharge treatment system thereof. Background technique [0002] Most of the existing domestic sewage discharge systems use gravity flow, which has problems such as occupying a large amount of space, water consumption, odor overflow, easy blockage, and difficult maintenance, especially for the treatment of domestic sewage from ships. Similar problems are more obvious; Since ships have been sailing at sea for a long time, the sewage that has not been well treated cannot be directly discharged to the sea. The sewage treatment of ships has always been a difficult problem that is eager to be solved but has not been solved well. Due to the characteristics of the ship itself, it is impossible to configure an ordinary sewage treatment and discharge system on the ship, because this kind of system of...

AI Technical Summary

Problems solved by technology

[0002] Most of the existing domestic sewage discharge systems use gravity flow, which has problems such as occupying a large amount of space, water consumption, odor overflow, easy blockage, and difficult maintenance, especially for the treatment of domestic sewage from ships. Similar problems are more obvious; Since ships have been sailing at sea for a long time, the sewage that has not been well treated cannot be directly discharged to the sea. The sewage treatment of ships has always been a difficult problem that is eager to be solved but has not been solved well.

Due to the characteristics of the ship itself, it is impossible to configure an ordinary sewage treatment and discharge system on the ship, because such systems often have problems such as occupying a large amount of space, water consumption, odor overflow, easy blockage, and difficult maintenance

The existing domestic sewage treatment system of ships mostly adopts biochemical method, or physical chemical method, or electrolysis method; traditional biochemical treatment uses aerobic microorganisms to degrade under the condition of sufficient oxygen, and then separates solid and liquid through sedimentation, and the purification effect is good. However, the volume of the device is large, it is difficult to arrange in the limited cabin, and the effluent water quality is easily affected by the swaying of the hull; the physical and chemical method is to add chemical agents to the sewage for circulation, crushing, precipitation, and disinfection treatment. The device is small in size and the process is simple, but The removal of organic matter is not complete, COD cannot reach the standard, and excessive disinfectant makes the residual chlorine in the effluent exceed the standard; the electrolysis method is to electrolyze the sewage mixed with seawater in an electrolytic cell, and the NaClO produced is directly used as an oxidant and disinfectant to degrade organic matter and Bacteria, the device is small, the treatment is fast, but the operation and maintenance are complicated, the operation cost is high, and the COD, residual chlorine and pH cannot reach the standard

Images