排序方式: 共有123条查询结果,搜索用时 15 毫秒
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高铁酸钾预处理印染废水的可行性研究 总被引:8,自引:0,他引:8
研究了高铁酸钾对印染废水中有机物、色度及重金属的去除;氧化絮凝后对污泥的产生和处置及其分解产物对后续生物处理系统的影响。高铁酸钾对COD去除率不高;在20mg/l投量下色度去除率可达90%以上,其分解产物不会对后续生物处理系统产生影响,高铁酸钾预处理印染废水是可行的。 相似文献
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XIA Sheng-ji LIU Ya-nan LI Xing YAO Juan-juan State Key Laboratory of Pollution Control Resources Reuse Tongji University Shanghai China. School of Environmental Science Engineering Dong Hua University Shanghai China School of Architecture Civil Engineering Beijing University of Technology Bejing China 《环境科学学报(英文版)》2007,(5)
In recent years, membrane ultrafiltration (UF) of surface water for drinking water treatment has become a more attractive technology worldwide as a possible alternative treatment to conventional clarification. To evaluate the performance of ultrafiltration membranes for treatment of surface water in North China, a 48-m2 low pressure hollow fiber membrane ultrafiltration pilot plant was constructed. Ultrafiltration was operated in cross-flow and with powdered activated carbon (PAC) adsorption. Turbidity was almost completely removed to less than 0.2 NTU (below Chinese standard 1 NTU). It was found that PAC addition enhanced organic matter removal. The combined process of PAC/UF allowed to 41% removal of CODMn 46% removal of DOC and 57% decrease in UV254 absorbance. The elimination of particles, from average 12000/ml in the raw water to approximately 15/ml in the permeated, was observed. When PAC concentration was below 30 mg/L, backwashing could recovery the membrane flux with backwash interval/backwashing duration of 1/30. 相似文献
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为了解淀山湖水生态系统中氮、磷的循环过程与特征,于1990~1995年间在全湖布设的25个样点上调查、测定了淀山湖水生态系统中各营养级的种类组成、生物量、生产力,以及水质和底质情况;并估算了淀山湖氮、磷的主要输入与输出途径和数量。根据湖中生物体内氮、磷的含量建立了淀山湖水生态系统内氮、磷循环模式。氮、磷输入、输出统计表明,磷基本平衡,氮每年约有117.72t积累在湖中。淀山湖目前仍以有机污染为主,处在中营养向富营养湖泊的过渡阶段。各类水生生物对于维持淀山湖水生态系统的物质平衡具有重要作用。 相似文献
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针对某水库源水,通过中试试验结合理论分析,对SCD自动控制加药技术用于微絮凝过滤作了较为系统的分析和研究。试验结果表明,SCD抗干扰调控能力强,并指出某水库水采用流动电流自动控制混凝加药技术是可行的。 相似文献
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Yang Guifang Huang Changsheng Yin Hongfu & Li Chang''''an State Key Laborary of Estuarine Coastal Research East China Normal University Shanghai China China University of Geosciences Wuhan China 《中国人口.资源与环境(英文版)》2005,(3)
1 INTRODUCTION Located in the transition area of the natural zones between north and south as well as the typical subtropical zone featured with warm-wet in the summer and cool-moisture in the winter (Shen, 1986; Chen et al., 2001), the MiddleYangtze reach is of great importance in the development and flood control of this region (Chen et al., 2001; Yin and Li, 2001). Due principally to the special geological setting and geographic location, the lower Jingjiang reach, typical of vast fl… 相似文献
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垃圾焚烧厂焚烧底灰的处理研究 总被引:12,自引:1,他引:12
系统地研究了常州市环境卫生综合厂垃圾焚烧车间的底灰。研究结果表明,根据中国现行的污染控制标准,该厂的底灰属于一般废物,可以以建筑垃圾的方式处理。但对底灰的分选和分类研究结果表明,底灰含有一定量的未燃烬的有机废物,也有一些可回收利用的废物。因此,底灰应该先分选后,再对无利用价值的渣土作填埋或其他处置。 相似文献
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VOCs恶臭污染物质的污染状况和一般处理方法 总被引:6,自引:4,他引:6
VOCs恶臭污染物质是一些既有异味且具有挥发性的有机气态污染物质,对人体健康和生态环境造成很大危害。VOCs恶臭物质来源于生活和工业生产等方面。常用的处理方法有吸附法、吸收法、燃烧法、冷凝法、生物法、膜分离法等。其中,生物法处理有机废气具有运行费用低、维护管理方便、没有二次污染等优点,成为今后治理VOCs恶臭污染物质的清洁型生物方法。 相似文献