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高氨氮印染废水生物脱氮试验 被引量:2

EXPERIMENT ON NITROGEN REMOVAL FROM HIGH NITROGEN PRINTING AND DYEING WASTEWATER
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摘要 采用序批式活性污泥法(SBR)处理经上流式水解酸化池处理后的印染废水。试验表明,以调整充水比增加碳源的方式不能满足系统反硝化脱氮的需要,需外加碳源。在充水比为0.3时,以甲醇作为外加碳源的脱氮效率最高,比食用蔗糖和工业葡萄糖分别高了12.11%和18.72%。控制C/N比为8.7时,基本可以满足系统的脱氮要求。对反硝化速率的测定发现,不同C/N下,反硝化均经历了开始较快,后逐渐减缓并最终趋于停止的过程,且C/N比越高,反硝化速率越快,趋于停止的时间越晚。 Sequencing batch reactor(SBR)was used to treat the printing and dyeing wastewater which had been disposed by hydrolytic acidification.The research indicated it couldn't meet the need of denitrification of the system by adjusting fill-water ratio,so it needs additional carbon source.When fill-water ratio was 0.3,the nitrogen removal efficiency was the highest by adding carbon source to the system;it was higher 12.11% and 18.72% higher than adding edible cane surge and dextrose.When the C/N was 8.7,the nitrogen removal need was met.By measuring the denitrification rates it was found,in different C/N,the denitrification rates were rapid firstly,then fell slowly and stopped at last.And the higher of C/N,the denitrification rates were rapid,and it was later to stop.
出处 《环境工程》 CAS CSCD 北大核心 2009年第S1期130-133,共4页 Environmental Engineering
基金 江苏省太湖流域城镇污水处理厂除磷脱氮提标改造技术攻关示范科研项目
关键词 脱氮 充水比 外加碳源 C/N 反硝化速率 nitrogen removal fill-water ratio additional carbon source C/N denitrification rate
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