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Use of a Modified Multi-Soil-Layering System to Remove Nitrogen From Polluted River Water
Pages: 569-573
Year: Issue:  5
Journal: Rural Eco-Environment

Keyword:  多介质土壤渗滤系统 强化脱氮 PBS颗粒碳源 空间结构优化;
Abstract: 针对多介质土壤层系统(MSL)反硝化不足导致总氮去除效果不明显的问题,采用非水溶性可生物降解多聚物PBS固相碳源,优化MSL系统空间结构(下部空间结构由砖砌改为层铺),研究改良MSL系统对污染河水的脱氮效果。结果表明,与木屑作碳源的MSL系统相比,PBS颗粒碳源反硝化效果更好,对TN的去除率达64.3%,提高20.6百分点;优化MSL系统下部空间后,TN去除率由43.7%提高至71.7%,且运行期间系统未出现堵塞情况。添加PBS颗粒碳源和优化系统空间结构,对COD、NH3-N和TP去除效果影响不大。
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