摘要
当前内源污染成为制约水环境质量改善的重要瓶颈因子。受城市化进程加剧的影响,许多城市河湖底泥堆积严重,其中含有的污染物具有量大、成分复杂的特点。本文针对底泥固化技术在经济社会中的推广应用,提出了城市河湖底泥固化效益评估方法。以无锡市为例,对其实施底泥固化工程的效益进行评估。结果表明:3个底泥固化工程的经济效益、生态环境效益和社会效益分别为167 694万元、21 712万元和250 339万元,可得出总净收益为439 745万元,相应的工程成本为22 280万元,投资收益比约为1∶20,表明实施该项技术效益巨大。
In-stream source pollution becomes the key factor affecting water environmental quality since point source pollution and non-point source pollution are almost under control. Many urban rivers are heavi- ly silted up due to the rapid urbanization. The constituent of sludge has the characteristics of complexity and large quantity. The main content of benefits assessment for sludge solidification in urban rivers is put forward in this study, in order to promote its application in current economic society. A few engineering works in Wuxi city are taken as examples to evaluate the benefits. The result indicates that the economic, ecological environmental and social benefits of the three sludge solidification projects are RMB 1676.94, 217.12, 2503.39 millions respectively. The total benefit is RMB 4397.45 millions, the cost is RMB 222.80 millions and, the ratio of benefits to cost is 20, which demonstrates convincingly that the benefits of imple- menting the technology are very high.
出处
《中国水利水电科学研究院学报》
北大核心
2015年第1期54-61,共8页
Journal of China Institute of Water Resources and Hydropower Research
关键词
城市河湖
底泥固化
效益评估
urban river
sludge solidification
benefit assessment
