大连湾小孤山养殖海域富营养评价及牡蛎死因分析

根据大连湾小孤山养殖海域环境调查结果，评价了养殖海域环境现状，分析了牡蛎死亡的可能原因，讨论了预防牡蛎暴发性死亡的对策。     

沈阳浑南新区水源地地下水研究

城市的可持续发展离不开水资源的合理开发与利用.近年随着浑南地区的快速发展,在大伙房水库引水工程建成之前,地下水已成为其可利用的主要水资源之一.通过浑南中心水源地地下水的监测、评价,分析论述了地下水的质量及存在的问题,并提出了相应的治理措施和防治对策.     

密云水库总磷的富营养化分析与预测

根据1991～1999年密云水库总磷质量浓度的实测数据，得到了9年平均总磷表面负荷Lp，建立总磷的预测模型。应用预测模型，预测了2008年密云水库的富营养化状态，当年平均总磷表面负荷分别为(1～2．1)Lp时，密云水库的水质可这中营养状态；负荷为(1．99～2．15)Lp时，水质可达中—富营养状态；负荷大于2．15Lp时，水质可这富营养状态。由此得出，当水库总磷表面负荷达到一定峰值后，水库水质将在总磷表面负荷的一个很小的变化范围内，迅速进入中一富营养厦富营养状态。     

水处理絮凝剂研究进展

概述了国内外无机絮凝剂、合成有机高分子絮凝剂、天然高分子絮凝剂和复合絮凝剂的研究进展和应用。     

Human Influence on Heavy Metal Distribution in the Upper Lake Nansi Sediments, Shandong Province, China

Core and surface sediment samples were collected from three sub-lakes ( Lake Nanyang, Lake Dushan and Lake Zhaoyang) in the Lake Nansi Basin, Shandong Province. In order to reveal the characteristics of spatial and historical distribution of heavy metals in different sublakes of the Upper Lake Nansi, heavy metal (As, Cr, Cu, Hg, K, Mn, Ni, Pb, Zn, Al, Fe, Ti and V) concentrations of sediment samples were investigated. Based on the activity of^137Cs in the sediments, the modem accumulation rate of Lake Nansi sediments is 3.5 mm/a. Our results show that the whole Upper Lake Nansi has been already polluted by heavy metals, among which Lake Nanyang has been polluted seriously by mercury, as well as by lead and arsenic, while Lake Dushan has been most seriously polluted by lead and arsenic. Historical variation of heavy metal (Cr, Cu, K, Ni, Zn, A1, Fe, Ti and V) concentrations shows an abrupt shift in 1962, resuiting in a division of two periods: from 1957 to 1962 when metal enrichment increased with time, and from 1962 to 2000 when it decreased with time, while that of some anthropogenic elements such as Hg, Pb and Mn tend to increase toward the surface. However, the variation trend of As in the sediments is different from that of Hg, Pb and Mn, with its maximum value appearing in 1982. Since 1982 the concentrations of As have decreased due to the forbidden use of arsenite pesticides. This variation trend revealed changes in manner of human activity (coal combustion, waste discharges from both industries and urban sewage ) within the catchment during different periods.     

Removal of Cu（ Ⅱ） from Wastewater Using Acidified Sewage Sludge Ash

Sewage sludge ash (SSA), the waste generated in sewage sludge incineration, was obtained from Wuhan Sewage Treatment Plant and used as a low-cost sorbent for removing Cu (Ⅱ) from wastewaters. The sorbent was first modified with 5 % sulfuric acid to increase its sorption capacity. The specific surface area, porosity, cation-exchange capacity (CEC) and pHzzc of the sorbent were measured. Batch experiments were made to study the effect of contact time, solution pH value and temperature on sorption. Both Langmuir and Freundlich models well described the Cu (Ⅱ) sorption process,with correlation coefficient (R2 ) values of 0. 993 4 and 0.9899 respectively. And the sorption process follows the Lagergren first order kinetic model. The equilibrium sorption capacity of acidified SSA to Cu(Ⅱ) is estimated to be 7.78 mg/g under optimal conditions.     

污染有机化合物向地下水的迁移

目前，在俄罗斯大部分地区地下水作为饮用供水水源引起高度重视，在人为和技术成因影响下地下水的污染在这方面是最迫切的问题。技术成因负载一般情况是不均匀的，在许多人口密度大的居民区、工业中心和采掘工业区这种现象尤其明显，相似区域面积非常大，其特征表现为污染组分的渗透     

国内外地下水污染治理

美国的富兰克林曾经说过：“井不干，人们是不知道水的价值的”。面对目前世界许多地方的地下水越来越紧缺，以致约20亿人缺少饮用水和农业灌溉用水的现状，开发和保护有效的水资源是非常重要的。然而，例如，美国亚利桑那州的地下水每年“消失”4亿立方米，这是此地自然降雨填充量的两倍     

成都市"府南河"水环境治理问题的建议

对成都市一号工程——“府南河”水环境严重失衡的本质问题进行了深入剖析，并提出科学的防治理念是控污的根本，截污、治污是关键，引流冲污是缓解。