Abstract
Oily wastewater and fly ash will cause great pollution to the environment, the paper reviewed the fly ash as the oil removal medium, through the means of directly adding as adsorbents, preparing fly ash ceramisite, adding to remove oil after modification and combing with other treatment processes, etc., had better treatment effect on a variety of oily wastewater generated from different backgrounds. The results showed that using fly ash to treat the oily wastewater could achieve "using waste to treat waste", and could play a dual effect on the environmental protection. Meanwhile it pointed out deficiencies in the existing processes, and the future research should rely mainly on improving the adsorption capacity, the separation and the final treatment of saturated fly ash, and strengthening the research on reaction mechanism.
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