Method for treating rutile titanium dioxide waste water
A technology for rutile titanium dioxide and waste water, which is applied in chemical instruments and methods, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. It can solve the problems of no economic benefit, large energy consumption, and affecting absorption effect, etc. , achieve significant economic and environmental benefits, and improve recycling efficiency
Active Publication Date: 2014-10-22
SICHUAN LOMON TITANIUM IND CO LTD
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The invention discloses a method for treating rutile titanium dioxide waste water. The method comprises the following three steps of: (1) mixing acid waste water and alkaline waste water, stirring, then naturally depositing to obtain a supernatant and bottom deposits, and controlling mixing temperature to 50-60 DEG C, wherein the pH value of a solution is 7-8 after mixing; (2) adding polyacrylamide to the supernatant obtained in the step (1) according to the concentration ratio of 5-10ppm, stirring, and depositing; (3) carrying out aeration, filter pressing and drying on the lower deposits obtained in the step (1) to obtain iron oxide black, wherein filter liquor obtained through the filter pressing can be directly discharged. The method disclosed by the invention can be used for recovering insoluble titanium from the rutile titanium dioxide waste water as much as possible and reducing the discharge amount of the rutile titanium dioxide waste water, thereby recycling the water resources and further creating great economic benefit and environmental protection benefit to enterprises.
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