Denitrificaiton treatment method and system of ship domestic sewage

Abstract

The invention discloses a denitrification treatment method and system of ship domestic sewage. The denitrification treatment method and system of the ship domestic sewage is invented by use of a method of combining an electrolytic oxidization electrode and an electrolytic chlorine-producing electrode. The system is simple in equipment flow process, and only needs to serially connect three systems; the floor area is small and is a half of the traditional treatment process area; the automation degree is high; the dosage of a flocculating agent is fed back by use of TSS online monitoring value as the index; each unit realizes intelligent control, is strong in oxidation, strong in effect of killing pathogen microorganism, and stable in denitrification effect which is guaranteed at 90% and more; the energy consumption for ton of water is a half of the primary electrolysis method, the electrode life is greatly prolonged, and the amount of the disinfection byproduct produced by ship domestic treatment is lower than the traditional electrolysis method. Therefore, the method and system disclosed by the invention have an extremely good application prospect in the denitrification treatment field of the ship domestic sewage.

Description

technical field [0001] The invention belongs to the technical field of ship domestic sewage, in particular to a treatment method and system for denitrification of ship domestic sewage. Background technique [0002] With the development of the nautical industry, untreated domestic wastewater from ships is directly discharged into seawater, which is an important cause of marine pollution. The problem of ocean pollution caused by shipping has gradually attracted people's attention and attention. The latest revised "Guidelines for the Implementation of Effluent Standards and Performance Tests of Domestic Sewage Treatment Plants in 2012" includes nitrogen and phosphorus as control indicators, but the current ship domestic wastewater treatment process is very effective in removing nitrogen and phosphorus. Greatly limited. [0003] At present, the existing commonly used ship sewage treatment processes mainly include biochemical method, membrane method, electrochemical method and ...

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Problems solved by technology

[0008] In order to solve the complex denitrification process of domestic sewage from ships, the biochemical method requires a multi-stage series process, which occupies a large area, and has high microbial activity and environmental tolerance, and the denitrification effect fluctuates greatly. Ton water treatment in the electrolysis method Due to the problems of large power consumption, short electrode life, and high energy consumption, the present invention aims to provide a method for denitrification treatment of domestic sewage from ships

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