摘要
针对人工湿地填料对农业废水污染物降解效果不稳定的问题,采用阶梯式人工湿地方法对农业废水进行降解,选择钢渣、石灰石、麦饭石、竹炭粒4种常见填料用于阶梯式人工湿地,研究了它们对农业废水中主要污染物的降解能力。试验结果表明:当污水停留时间(HRT)为7 d时,对污水中COD、浊度、TP、TN和NH3—N的降解率,钢渣分别为79.7%、88.7%、83.5%、74.4%和81.2%,石灰石分别为73.6%、70.7%、55.2%、50.1%和56.9%,麦饭石分别为81.3%、89.7%、78.6%、79.2%和81.5%,竹炭粒分别为67.6%、88.5%、68.3%、69.2%和73.2%,出水水质基本达到城镇污水处理厂污染物排放标准(GB 18918-2002)的一级A标准的要求。
In view of the unstable effects of artificial wetland system on the degradation of agricultural wastewater pollutants,a steps constructed wetland system was used to degrade agricultural wastewater.Four kinds of common stuffing slag,such as steel slag,limestone,maifanite and bamboo charcoal,were selected as the steps constructed wetland matrix. Their degradability to the main pollutants in agricultural waste water was studied. The results showed that when the water retention time（ HRT） was seven days,the degradation rates of COD,turbidity,TP,TN and NH3—N in waste water were 79. 7%,88. 7%,83. 5%,74. 4% and 81. 2% for steel slag,respectively. For limestone,the degradation rates of COD,turbidity,TP,TN and NH3—N were 73. 6%,70. 7%,55. 2%,50. 1% and 56. 9%,respectively. And for maifanite were 81. 3%,89. 7%,78. 6%,79. 2% and 81. 5%,respectively. And for bamboo charcoal were 67. 6%,88. 5%,68. 3%,69. 2% and 73. 2%,respectively. The indicators of the final effluent basically met the requirements of the A level of discharge standard of the urban sewage treatment plant pollutant discharge standard（ GB 18918-2002）.
作者
裴亮
孙莉英
梁晶
麦荣幸
PEI Liang1, SUN Liying1, LIANG Jing2, MAI Rongxing1(1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences ,Beijing 100101, China; 2. Xinhua Hydropower Company Limited, Beijing 100070, China.)
出处
《水资源与水工程学报》
CSCD
2018年第1期232-235,241,共5页
Journal of Water Resources and Water Engineering
基金
国家高技术研究发展计划项目(2011AA100507)
国家自然科学基金青年基金项目(41471229
51109197)
国家科技支撑计划课题(2012BAD08B02
2013BAC02B02)
关键词
农业废水处理
阶梯式人工湿地
钢渣
石灰石
麦饭石
竹炭粒
treatment of agricultural waste water
steps constructed wetland
slag
limestone
maifanite
charcoal
