基于源分离的农村分散式生活污水处理技术Source separation-based rural decentralized domestic wastewater treatment technology
刘玲花,张盼伟,王启文
摘要(Abstract):
与城市集中式生活污水处理相比,农村分散式生活污水处理可以采用源分离技术与污水资源回收处理技术相结合的模式,从而有效回收污水中的营养盐、减少排放到环境中的污染物、提高水的循环利用效率。本文提出了三种源分离生活污水,包括尿液,灰水(洗浴、洗衣水等)和粪便。尿液不到家庭废水总量的1%,却含有50%~80%的氮、磷和钾等营养盐以及大部分药物和激素。粪便含有较高的有机物、固体和病原菌,并携带剩余的药物/激素残留物。灰水量最大,但是在三类污水中其营养盐、病原菌的含量最低,但含有洗涤剂和个人护理产品等污染物。提出了两种模式的生活污水源分离及污水处理技术。尿液的最佳处理技术是用鸟粪石沉淀法回收磷,用氨汽提法回收氨氮。黑水的最佳处理方法是厌氧消化;灰水的最佳处理方法是人工湿地和BAF、MBR等好氧生物处理技术。
关键词(KeyWords): 生活污水处理;源分离;黑水;尿液;灰水
基金项目(Foundation): 中国水利水电科学研究院基本科研业务费专项(WE0145B062017)
作者(Author): 刘玲花,张盼伟,王启文
DOI: 10.13928/j.cnki.wrahe.2019.06.027
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