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A kind of method of Fenton's reagent and potassium hydrogen persulfate and microorganism joint treatment bilge water

A technology of potassium hydrogen persulfate and Fenton reagent, applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. research, marine pollution and other issues, to achieve the effect of strong pertinence, saving treatment costs and equipment running time, and good decontamination effect

Active Publication Date: 2017-12-29
OCEAN UNIV OF CHINA
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Problems solved by technology

However, after the oil-water separation treatment of bilge water, its high nutrient salt and high COD properties have not been fundamentally changed. If it is directly discharged into the sea, it will still cause extremely serious marine pollution.
At present, there is no special national standard for bilge water discharge, and there is no systematic research on the removal of nutrients and COD in bilge water

Method used

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  • A kind of method of Fenton's reagent and potassium hydrogen persulfate and microorganism joint treatment bilge water
  • A kind of method of Fenton's reagent and potassium hydrogen persulfate and microorganism joint treatment bilge water
  • A kind of method of Fenton's reagent and potassium hydrogen persulfate and microorganism joint treatment bilge water

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Embodiment 1

[0060] In this example, the bilge water after preliminary oil-water separation is the object to be treated. Bilge COD Mn The content is 963mg / L, pH=7.20. In Fenton's reagent, the mass concentration of hydrogen peroxide is 30%, and ferrous sulfate is made into an aqueous solution. Potassium persulfate is a solid powder. The experiment was divided into five groups, which were dosed according to 1 to 5 times the theoretical dosage of Fenton's reagent. After the reaction is completed, the COD in the water body is determined by analysis Mn And ammonia nitrogen content, evaluate the removal efficiency of reducing substances such as organic matter in bilge water, the results are shown in Table 1. It can be seen from the data in the table that after three Fenton reagent oxidation reactions, 2 to 5 times of the theoretical dosage of Fenton reagent has a significant effect on the COD of bilge water. Mn The removal effect is the best and the difference is less than 5%, and the conte...

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Abstract

A method for treating bilge water with Fenton's reagent, potassium hydrogen persulfate and microorganisms, comprising 1) adjusting the bilge water to pH=2~4, adding Fenton's reagent for oxidation treatment; adjusting to pH> 7. Stand still to remove the precipitate, and repeat Fenton’s reagent oxidation treatment; 2) Adjust the bilge water oxidized by Fenton’s reagent to pH<7, add potassium hydrogen persulfate, and react at 50-60°C for 1~ 2 hours; 3) Add microbial bacteria liquid to react for 24-72 hours to activate and remove ammonia nitrogen in the water body. The invention is a method for purifying and treating bilge water specially. The process operation is simple, the decontamination and purifying effect on bilge water is good, no additional catalyst is needed in the reaction process, the reaction rate is fast, and the ship bilge water can be effectively treated to become low-pollution. , dischargeable, and even reusable water resources, making up for the current gap in the treatment methods for ship bilge water purification.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for jointly treating bilge water with Fenton's reagent, potassium hydrogen persulfate and microorganisms. Background technique [0002] Bilge water is a kind of stagnant water formed in the bilge of a ship due to leakage of outer plates, insufficient watertightness of hatch covers, leakage of pipelines, infiltration of flushing water, ship damage, fire fighting, etc. during the course of the ship. The bilge water must be removed in time to prevent corrosion of the hull structure and to prevent the cargo from being damp and deteriorated. It is often oily and is characterized by high nutrient salts and high chemical oxygen demand (COD). Therefore, if it is discharged directly, it will inevitably cause pollution to the marine environment. In recent years, my country's maritime agencies have intensified the supervision on the discharge of ship ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
Inventor 梁皓瑞丁海兵王勇杨敬民孙承君
Owner OCEAN UNIV OF CHINA
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