Device and method for treating waste liquor of gas desulphurization system during ship washing

Abstract

The invention aims at providing a device and method for treating waste liquor of a gas desulphurization system during ship washing. The device for treating waste liquor of the gas desulphurization system during ship washing comprises a waste liquor buffer tank, an oil water separation tank, a mixer, a floatation chamber, a waste liquor detection system, a sludge cabin and a high pressure air water tank, wherein the waste liquor buffer tank is used for storing waste liquor and then is communicated with the oil water separation tank by virtue of a water pump, the oil water separation tank is connected with a chemical agent tank in parallel and then is communicated with the mixer, the mixer is communicated with the floatation chamber, the floatation chamber is communicated with the waste liquor detection system by virtue of a filter, waste liquor detected by the waste liquor detection system is discharged into a waste liquor storage tank if the waste liquor meets the specified standard and is discharged into the waste liquor storage tank if the waste liquor does not meet the specified standard, the sludge cabin is respectively communicated with the oil water separation tank and the floatation chamber, and the high pressure air water tank is respectively communicated with the oil water separation tank and the floatation chamber. The device for treating waste liquor of the gas desulphurization system during ship washing can be used for treating floating oil, emulsified oil, particles and heavy metal hydroxide precipitate at the same time, so that structure of equipment is compact, floor space is small, energy is saved, and the treated oil-bearing waste liquor can meet the standard stably.

Description

technical field [0001] The invention relates to a waste liquid treatment device and method, in particular to a ship waste liquid treatment device and method. Background technique [0002] The sewage generated by the washing of ship waste liquid contains oil, heavy metal ions and other pollutants, which destroys the balance of marine ecology and pollutes the quality of marine water. In addition, due to the diffusion of floating oil and oily heavy metal particles, etc., it will cause serious environmental hazards to tourist areas and seashores. [0003] In view of the increasingly stringent emission regulations, the development of new and efficient desulfurization equipment to meet the requirements of future ship sulfur emission control and ensure the free navigation of ships in all sea areas requires desulfurization treatment of the exhaust gas emitted by diesel engines, and the waste liquid produced by desulfurization also needs to be treated. Strict treatment and testing c...

AI Technical Summary

Problems solved by technology

However, this method uses gravity oil-water separation, the separation effect is poor, the reaction speed is slow, and it does not meet the requirements of marine diesel engine washing waste liquid

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