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doi:10.11799/ce202005033

Abstract

Abstract: Coal gasification wastewater has complex pollutant components, high COD values, and contains a variety of toxic and hazardous substances. The problem of coal gasification wastewater treatment has always been one of the important issues in the development of China's coal gasification industry. In this paper, the adsorption of organic matter in coal gasification wastewater by Shengli (SL) and Zhaotong (ZT) heat treated lignite (TTL) was studied. The results show that the residual moisture in the two TTLs has a great effect on the removal efficiency of COD, and has a negative correlation with the effective adsorption pores. The SL TTL adsorption effect is significantly better than ZT TTL. SL TTL heat treatment at 300 ° C for 2 minutes shows the highest COD removal efficiency. When the amount of adsorbent is 100.0 g / L and the pH value is 2.0, the removal rate can reach 64.5 %.

CLC Number:

TD75

References 9

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Preparation of Lignite Cheap Adsorbent and Its Adsorption Performance for Coal Gasification Wastewater

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