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STUDY ON ADSORPTION TREATMENT OF WASTEWATER CONTAINING HgII WITH MODIFIED BENTONITE

Deng Shu

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Abstract

The treat capacity to wastewater of mercury ion with modified bentonite is researched under different conditions.The results show that when the initial concentration of Hg2+ is 1 mg/L,the removal ratio of Hg2+ by acid—modified beniomte can reach greater than 97% under the following conditions:the dosage of acid—modified bentonite is 10g/L,pH=9～10,the adsorption time is 90 mins.The residual concentration of Hg2+ is less than the first national discharge criterion after the treatment by acid—modified bentonite.

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What this paper is about

The treat capacity to wastewater of mercury ion with modified bentonite is researched under different conditions.The results show that when the initial concentration of Hg2+ is 1 mg/L,the removal ratio of Hg2+ by acid—modified beniomte can reach greater than 97% under the following conditions:the dosage of acid—modified bentonite is 10g/L,pH=9～10,the adsorption time is 90 mins.The residual concentration of Hg2+ is less than the first national discharge criterion after the treatment by acid—modified bentonite.

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Available abstract

The treat capacity to wastewater of mercury ion with modified bentonite is researched under different conditions.The results show that when the initial concentration of Hg2+ is 1 mg/L,the removal ratio of Hg2+ by acid—modified beniomte can reach greater than 97% under the following conditions:the dosage of acid—modified bentonite is 10g/L,pH=9～10,the adsorption time is 90 mins.The residual concentration of Hg2+ is less than the first national discharge criterion after the treatment by acid—modified bentonite.

Key concepts: Bentonite, Adsorption, Wastewater, Chemistry, Nuclear chemistry, Sewage treatment, Mercury (programming language), Waste management

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