Decentralized treatment and reuse system for domestic wastewater based on vacuum source separation i

来源 :第十三届世界湖泊大会 | 被引量 : 0次 | 上传用户:xiaoxiao1946
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Domestic wastewater is major driver of serious water environmental pollution in surface waters in rural areas of China.Sanitation and wastewater management problems in rural in China are distinctly different from those of (e)ities.It is not possible to centralize the infrastructure for handling all wastewater in rural areas.Decentralized treatment should be considered an essential part of an overall rural policy.For this reason,there is an urgent call for the development of appropriate decentralized treatment options that require minimum construction,operational and maintenance costs.In the present study,one wastewater management systems for reuse and resource recovery is proposed.The domestic wastewater management system for individual household (IH)involves,anaerobic digestion (septic tank),and fortified soil systems.based on vacuum system using minimal amount of transpert water allows to use black water for fertilization besides saving 80% of water.Grey water pollution calculated as COD,total N and total P could be reduced by > 70% to meet water quality standard for irrigation of courtyard horticulture after pre-treatment and soil infiltration treatment of grey water.The proposed system is a suitable technology for decentralized do.mestic sewage treatment from rural areas of China.The decentralized sewage treatment for IH had the advantages of saving water,and recycling nutrients,but also had the problems in public acceptance.Therefore,application of proposed decentralized wastewater treatment systems should be site specific accounting for social,cultural,environmental and economic conditions in the target area.
其他文献
  氧作为好氧微生物氧化分解有机物的电子受体,并且只有当含氧量充分时硝化作用才完全。因此,溶解氧是人工湿地中COD和NH4+-N降解最重要的控制条件之一。首先利用垂直潜流人
会议
他是自己祖国的同龄人,却比他的国家多活了17年;他的文字获得了世人的认同,他却因此被祖国驱逐出境;他总是指出别人的错误,即使是那些收留了他的人。 He was his own countr
  湖泊具有调节区域气候、记录区域环境变化、维持区域生态系统平衡等功能。江苏省淡水湖泊共有150多个,面积6800多km2。由于经济高速发展与人口增长,湖泊生态系统遭受了严重
会议
  本研究从活性污泥中富集、筛选得到4株反硝化菌OFHB4、PFHB6、QF4和RF5,这4株菌在4d内对NO3--N的去除率可达99.6%以上,其中菌株PFHB6对NO3--N的去除率为76.38%。并研究不同
  对上海滨岸带68个站位沉积物样品中毒害重金属元素铅(Pb)和各类金属元素(Fe、Al、Mn)含量及分布特点进行探讨。研究表明,Fe、Al、Mn和Pb含量从北往南呈下降趋势;沉积物中P
会议
  论文针对我国湖泊流域水环境及其治理现状,分析我国湖泊流域治污的困境。通过信息不对称条件下湖泊流域水环境治理的利益相关者的行为及其博弈分析,阐明导致我国湖泊流域水
  太湖蓝藻水华已成为社会关注的热点议题,而科学、系统地对蓝藻水华进行预警监测在藻类危害防治中至关重要。文章讨论了浙江省太湖藻类预警应急体系构建过程中机制、职责、
陈寅恪双目失明之后,穷十年之功,著成《柳如是别传》,让世人叹为观止。在中国近代史上,还有一位学者,在双目失明之后,用三十年的光阴,带出一所戛戛独造的学校,并且坚持每周亲
  本文以印染行业中常见的直接染料为研究对象,利用分光光度法,就鱼腥藻和小球藻对直接橙S、直接大红4BE在高压汞灯、紫外灯、太阳光下的催化生物降解进行了研究与分析,结
In the course of a urban man-made lake development,on the one hand,due to the high expectation on water landscape,the demand on water quality criteria of the la
会议