Advanced treatment, regeneration and reuse device and method of domestic sewage from ships

Abstract

The invention aims to provide an advanced treatment, regeneration and reuse device and method for domestic sewage from ships. The device comprises a flocculation reaction pool, a membrane bioreactor and an oxidization advanced treatment unit, wherein a first stirrer and a first medicating machine for adding a flocculating agent are arranged inside the flocculation reaction pool; a sludge hopper and a first sludge pump are arranged at the bottom of the flocculation reaction pool; the flocculation reaction pool is communicated with the membrane bioreactor and is also communicated with a sludge concentration pool; the membrane bioreactor is also connected with the sludge concentration pool; a second stirrer, a second medicating machine and a third medicating machine are arranged in the oxidization advanced treatment unit and the second medicating machine and the third medicating machine are respectively used for adding an oxidant and an activating agent; and the oxidization advanced treatment unit is communicated with the membrane bioreactor, performs oxidization advanced treatment on sewage treated by the membrane bioreactor and then stores the treated sewage into a clean water tank. By the device and the method, zero emission of domestic sewage from ships is realized, and the problems of insufficient capacity of ships and carrying capacity are solved; and equipment of seawater desalting devices is reduced.

Description

technical field [0001] The invention relates to a sewage treatment and recovery device and method, in particular to a ship sewage treatment and recovery device and method. Background technique [0002] The pollution of the marine environment is becoming more and more serious, and the impact of the discharge of domestic sewage from ships on the ocean cannot be ignored. Ship domestic sewage refers to the waste water mixture formed by all people and animals on board in daily life. According to the source and quality of sewage, domestic sewage from ships can be divided into black water and gray water. Black water refers to the mixture of wastewater from infirmaries, toilets and living animal premises; gray water refers to the mixture of wastewater from places such as toilets, kitchens and laundry rooms. The pollution caused by domestic sewage from ships will deteriorate the quality of the regional water environment and endanger people's health. The domestic sewage of ships is...

AI Technical Summary

Problems solved by technology

Although the researched equipment has passed the approval of the ship inspection department, the relatively concentrated problems in the actual use process are: the processing device has a large volume, poor impact load resistance, unstable processing effect, and inconvenient operation and maintenance

Membrane bioreactor combines the advantages of membrane separation technology and biological treatment technology, but the membrane fouling in the reactor seriously affects the normal operation of membrane modules, resulting in shortened replacement cycles of membrane modules, and the membrane bioreactor has a negative impact on the phosphorus in sewage. The removal effect is not very good

Moreover, the current domestic sewage treatment technology for ships is still the direct transfer or combined use of urban domestic sewage treatment processes, and does not address the pollution characteristics of ship domestic sewage due to "ship" conditions.

Images