Characteristics of Internal Ammonium Loading from Long-Term Polluted Sediments by Rural Domestic Wastewater.
作者： Xiang Luo , Yungui Li , Qingsong Wu , Zifei Wei , Qingqing Li
关键词:
摘要: Given long-term decentralized and centralized rural domestic wastewater (RDW) discharge, nitrogen is continuously depositing in sediments. RDW discharge assumed to be an important source of ammonium surface water; however, the effect on pollution sediments remains unknown. Batch incubations were conducted investigate characteristics internal loading from polluted by discharge. Four demonstrated heavily with total (TN) values 5350, 8080, 2730, 2000 mg·kg-1, respectively. The release sediment was a slow long process, risk during dry season significantly greater than that wet season. Though all selected relative contribution generally lower external pollution. Hence, dredging not suggested for RDW-polluted except response emergency. excessive catchment mainly untreated black water RDW. Centralized waters communities are highlighted separately treated or reused maintain content at safe level.
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