Sodium borate reduction mercury removal method

That is added in a concentration of mercury in waste water containing 12% of non-metallic reducing agent is sodium perborate, and then put into the base (water pH = 9 ~ 11) mixture to produce mercury particles (diameter about 10 microns), Hydrocyclone Separation Recycling. The mercury remaining in the overflow is separated by water and gas and trapped by a filter having a pore size of 5 μm. The mercury vapor in the exhaust gas is washed with dilute nitric acid and returned to the original wastewater tank for recycling. The method has been used in industrial production in the United States, and the amount of residual mercury in the discharged wastewater is less than 0.01 mg/L. The process flow is shown in the figure below.

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Coarse Crushing Machine is horizontal crushing structure, and the material is fed into the crushing chamber through a hopper, crushed by cutting and impact of both fixed and rotating knives, and flows of the exit automatically under the effect of rotating centrifugal force. Designed according to "GMP" standard and wholly made of stainless steel, this machine has simple structure, convenient cleaning and low noise, being the ideal equipment for coarse crushing.

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