Denitrificaiton treatment method and system of ship domestic sewage

A technology for domestic sewage and treatment methods, which is applied in water/sewage treatment, water/sewage multi-stage treatment, reduced water/sewage treatment, etc. problem, to achieve the effect of reducing the floor space

Pending Publication Date: 2017-05-31
SUNRUI MARINE ENVIRONMENT ENG
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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 eff...

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  • Denitrificaiton treatment method and system of ship domestic sewage
  • Denitrificaiton treatment method and system of ship domestic sewage

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Embodiment Construction

[0025] see figure 1 , The present invention The present invention provides a denitrification treatment process for domestic sewage from ships to solve the problems of complex treatment methods, poor and unstable denitrification effect, and large equipment footprint in the current domestic sewage treatment system. The process includes:

[0026] (1) Preprocessing:

[0027] Polyaluminum chloride is used as a flocculant, and the dosage of polychloride is Al 3+ The calculation is 1.5 times of the TSS detection value of the influent. After adding the flocculant, stir rapidly for 20s, then stir slowly for 3min, and settle for 10min. After pretreatment, the removal rate of total phosphorus can reach more than 90%, and the supernatant enters the In the electrolytic cell system, the sludge in the lower layer passes through the sludge recovery system for dehydration treatment. After the dried sludge is collected, it can be used as solid waste for land incineration to generate electrici...

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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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Application Information

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IPC IPC(8): C02F9/06C02F101/38
CPCC02F9/00C02F2209/16C02F2303/04C02F1/56C02F1/70C02F2101/38C02F2103/008C02F1/4672
Inventor 李超于青王洪仁
Owner SUNRUI MARINE ENVIRONMENT ENG
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