Ship domestic sewage treatment device

Abstract

The invention discloses a ship domestic sewage treatment device, and relates to the technical field of sewage treatment. The device comprises an air supply group, and an aeration chamber and a contact chamber which are communicated with each other, wherein the input pipe of the aeration chamber is communicated with a fecal sewage collecting tank, the top ends of the aeration chamber and the contact chamber are communicated with an exhaust pipe, the air supply group comprises two aeration pipes, the output ends of the two aeration pipes extend into the bottom in the aeration chamber and the bottom in the contact chamber respectively, a membrane assembly is arranged in the middle in the contact chamber, internally comprises a membrane unit and a pressure sensor and is communicated with an air bottle through an air inlet pipe, a pressure regulating valve is arranged on the air inlet pipe, and the aeration chamber, the contact chamber and the water outlet end of the membrane assembly are communicated with a crushing discharge valve. According to the invention, the scouring to the membrane assembly is reduced by a scouring method, an air-blast structure suitable for the membrane unit is formed by the pressure sensor, the pressure regulating valve and the air bottle, the scouring to the membrane unit is reduced by the scouring method, the damage to the membrane assembly is reduced, and the service life of the membrane assembly is prolonged.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular to a domestic sewage treatment device for ships. Background technique [0002] Domestic sewage is the wastewater discharged from residents' daily life, mainly from residential buildings and public buildings, such as residences, institutions, schools, hospitals, shops, public places and industrial enterprise toilets. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc.) and a large number of pathogenic microorganisms (such as parasite eggs and intestinal infectious viruses, etc.). The organic matter present in domestic sewage is extremely unstable and easily rots to produce stench. Bacteria and pathogens reproduce in large numbers using organic matter in domestic sewage as nutrients, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before disch...

AI Technical Summary

Problems solved by technology

This improvement doubtlessly solves the requirements of the new regulations on emission indicators, but does not fully consider the new problems caused by membrane fouling

[0003] Due to the presence of particles, colloids, and micro-particles in the live sewage □adhesive □agglomerates, the device will deposit and absorb on the membrane surface and inside the membrane pores after a period of operation, which will cause the blockage of the pores of the membrane module , resulting in a rapid decrease in the flow rate of the membrane, resulting in a reduction in the operating efficiency of the equipment and a shortened service life

At present, □□washing or chemical solution rinsing is used to solve the membrane pollution problem on ships, but there are cleaning dead ends, the cleaning is not thorough enough, the recovery rate of membrane flux is low, and the flushing pressure is fixed; □chemical solution rinsing may be harmful to micro□ affect the activity of substances, and also cause secondary pollution to the human environment

Images