Catalytic oxidative treatment process for ship wastewater

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a catalytic oxidative treatment process for ship wastewater. The process comprises the following steps: firstly, feeding domestic wastewater and kitchen wastes into a collection box, pumping raw water into wastewater mixing and grinding equipment by a sludge pump, and grinding the domestic wastewater and the kitchen waste into particles of about 1-2 mm; secondly, feeding the particles into a circulating water tank, pumping the particles into a high-voltage sealed electro-oxidation device through a sludge stirring pump, and producing an electrochemical reaction under the action of applied high voltage; performing pyrolsis, flow pushing, oxidation, sterilization and algal removal and converting electric energy into chemical energy in the electro-oxidation device, adding ozone, forming a dissolved oxygen form inside, producing a redox reaction of organic or inorganic matters in the wastewater, agglomerating, and separating pollutants from a water body; finally, separating out iron salt or aluminum salt from any of an iron electrode plate and an aluminum electrode plate, and performing co-precipitation. The process has the advantages of simplicity and convenience for operation, stability for running, small occupied area, energy conservation and convenience for scientific management.

Description

Technical field: [0001] The invention relates to the technical field of sewage treatment, in particular to a catalytic oxidation process for treating ship sewage. Background technique: [0002] With the improvement of "International Maritime Organization IMO Convention Standards" and the environmental requirements of the International Maritime Organization, the discharge of domestic sewage at sea is facing a huge opportunity for development. In order to overcome the problems of marine sewage discharge and fresh water resource shortage, improving resource utilization, resource reduction, reuse, and recycling are the inevitable requirements for implementing circular economy and realizing the sustainable development strategy of society and economy. [0003] Ship domestic wastewater mainly comes from the daily drainage of people on board, including kitchen waste wastewater, toilet garbage wastewater, etc. It mainly contains oil, protein, phytochemicals, surfactants, COD, ammoni...

AI Technical Summary

Problems solved by technology

[0012] Due to the long domestication time of bacteria in the early stage of biochemical treatment, the high requirements for adapting to the environment, the large area occupied, and the troublesome operation, the above treatment methods can be used on land. The difference is large, and at the same time, the turbulence of the waves will affect the cultivation of organisms. Once the bacteria are affected by the environment, it will directly lead to fluctuations in the treated water quality, causing the effluent to exceed the standard

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