摘要
人工湿地可应用于污水厂尾水深度处理,但反硝化碳源不足的问题制约了其脱氮能力。本试验拟利用人工湿地现有的芦苇、香蒲及玉米秸秆作为碳源和生物膜载体以提高其脱氮效能,对比了3种不同的植物秸秆预处理方式,分析了秸秆的释碳规律及其对水质的潜在影响。结果表明,最适的预处理方式为粉碎处理;秸秆碳源释放速率:玉米秸秆(10.08 mg/(g·d))>芦苇(5.32 mg/(g·d))>香蒲(3.81 mg/(g·d)),芦苇为最佳的缓释碳源;伴随有机物的释放,植物秸秆虽有一定量的N、P释放,但影响很小。
Constructed wetland can be applied to advanced treatment of tail water from municipal wastewater treatment plant, but the lack of carbon source for denitrification constraints its capacity. In this research, reeds, cattails and corn straw from constructed wetland were investigated as carbon source and bioflim carrier to improve nitrogen removal efficiency; three different pretreatment methods of plant straw were compared; the law of releasing carbon of straw and the potential impact on the water quality was analyzed. The results indicated that pulverization treatment was the optimum method; the releasing rate of carbon from straws as follows： com stover （ 10.08 mg/（g.d）） 〉 reed （5.32 mg/（g.d）） 〉 cattails （3.81 mg/（g.d））, so the reed was the best slow-releasing carbon source; accompanying the releasing of organic matter, a certain amount of N, P from plant stalks was released, but which almost did not cause negative impact.
出处
《水处理技术》
CAS
CSCD
北大核心
2013年第12期46-48,52,共4页
Technology of Water Treatment
基金
十二五水专项"工业园区清洁生产与污染源控制技术研究与工程示范"(2012ZX07301005)
关键词
人工湿地
植物秸秆
反硝化
碳源
生物膜载体
constructed wetland
plant stalks
denitrification
carbon source
bioflim carrier
