亚硝酸盐型同步脱氮除硫工艺单质硫产率及特性

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Abstract In this experiment, Sequencing batch reactor (SBR) was used for simultaneous nitrogen and sulfur removal. Chemical control group (sterilization, without sludge) and biological test group (adding sludge) were set up to study the yield and characteristics of elemental sulfur in the process of simultaneous nitrite and sulfide removal. In the chemical control group, removal percentages of nitrite and sulfide could reach 25.07% and 62.26%, respectively, and main products were ammonia nitrogen and thiosulfate, in which there was no elemental sulfur produced; while in the biological test, removal percentage of nitrite and sulfide could reach 100% and 99.94%, respectively, and the main products were elemental sulfur and nitrogen gas in the appropriate concentration range (60~180mg S/L). As influent sulfide concentration was 180mg S/L, the production of elemental sulfur was as high as 79.58%. The produced elemental sulfur was existed in the form of orthorhombic sulfur (S₈) with negative surface charge, and the particle size of elemental sulfur had a normal distribution.

Key words： simultaneous nitrogen and sulfur removal biological chemical nitrite sulfide elemental sulfur

Received: 17 August 2020

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X703

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	Articles by authors
	SUN Yue
	CHEN Ke-xu
	WANG Kai-quan
	LOU Ju-qing
	WANG Ru-yi
	LI Qiang-biao
	CAI Jing

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SUN Yue,CHEN Ke-xu,WANG Kai-quan等. Yield and characteristics of elemental sulfur in the process of simultaneous nitrite and sulfide removal[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(3): 1228-1233.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I3/1228

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