化学活性生物法处理稀土氨氮废水中试研究

发布时间：2018-02-11 22:48

本文关键词： 离子吸附型稀土氨氮废水生物活性污泥　出处：《金属矿山》2017年11期 　论文类型：期刊论文

【摘要】：为了有效降低离子吸附型稀土矿山开采中产生的氨氮废水,通过化学活性生物法,选用一种经驯化且指标稳定后的复合微生物种群,进行中试试验。考察了利用化学活性生物法(SBR)处理离子型稀土氨氮废水的工艺条件。试验结果表明,在pH=9.5,强曝气时间4 h,液固比为2.6∶1时,处理后的废水氨氮浓度为10~13 mg/L,达到国家排放标准,且该化学生物活性菌适应矿山废水能力强,状态稳定。该工艺为离子型稀土矿山废水处理提供了新的思路。
[Abstract]:In order to reduce ammonia nitrogen wastewater from mining ion adsorption type rare earth mine, the chemical activity of biological method, a kind of composite microbial populations and domestication index is stable after the pilot test was carried out. The chemical activity was evaluated by using biological method (SBR) process conditions of ion type rare earth ammonia wastewater. The experimental results show that in pH=9.5, the strong aeration time of 4 h, liquid-solid ratio of 2.6 to 1, ammonia nitrogen concentration after treatment for 10~13 mg/L, meet the national emission standards, and the chemical and biological activity of bacteria to mine drainage ability, stable condition. This process provides a new way for ion type rare earth mine wastewater treatment.

【作者单位】：江西理工大学研究生院;赣州稀土矿业有限公司;
【分类号】：X753

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