硫自养反硝化深度脱氮中试研究

发布时间：2018-02-05 20:21

本文关键词： 硫自养反硝化深度脱氮中试　出处：《中国给水排水》2016年19期 　论文类型：期刊论文

【摘要】：利用硫自养反硝化技术实现城市污水厂二级出水深度脱氮。在构建中试硫填充床的基础上,优化系统运行参数,考察该系统对城市污水厂二级出水的深度脱氮效果,并核算运行成本。结果表明,硫填充床能够有效去除二级出水中的NO_3~--N,HRT高于0.24 h时,NO_3~--N去除率达90%以上;当HRT为0.21 h、进水NO_3~--N为12 mg/L时,NO_3~--N去除率达80%,装置日处理量最高达336 m~3,最大脱氮负荷达到1 158 mg/(L·d);通过反冲可以实现系统的稳定运行,反冲后1 h内即可恢复正常处理性能;系统运行成本较传统反硝化低,费用为0.11元/m~3。
[Abstract]:The technology of sulfur autotrophic denitrification was used to realize deep denitrification of secondary effluent from municipal wastewater treatment plant. Based on the construction of pilot-scale sulfur packed bed, the operating parameters of the system were optimized. The effect of the system on the deep denitrification of the secondary effluent from the municipal wastewater treatment plant was investigated and the operating cost was calculated. The results showed that the sulfur packed bed could effectively remove NO_3~--N from the secondary effluent. When HRT is higher than 0.24 h, the removal rate of NO3- -N is more than 90%; When the HRT is 0.21 h and the influent NO_3~--N is 12 mg/L, the removal rate of NO3-N reaches 80 and the maximum daily treatment capacity of the plant is 336mm3. The maximum denitrification load was 1 158 mg/(L 路dl; The stable operation of the system can be realized by backflushing, and the normal processing performance can be restored within 1 hour after backflushing. The operating cost of the system is lower than that of the traditional denitrification system, and the cost is 0.11 yuan / m ~ (3).
【作者单位】：江南大学环境与土木工程学院;清华大学环境学院环境模拟与污染控制国家重点联合实验室;宜兴市建邦环境投资有限责任公司;
【基金】：国家水体污染控制与治理科技重大专项(2014ZX07305001)
【分类号】：X703

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