长江大学：《沉积岩石学》课程教学课件（讲稿）第九章 深水异地沉积 Deep-water allogene clastic deposits 第一节 深水重力流沉积 Deep-water Gravity Flow Deposits

同济大学：《环境科学概论》课程教学资源（教案课件）Part 2 Water Resources and Treatment Topic 2 Water pollution 水污染

淡水需求:生活用水、动力装置用水、锅炉补水 海水[Sea Waters.w.)]:平均含盐量35g/ 淡水[Fresh Water.w.:含盐量<1000mg/ 造水机[Fresh Water Generator(f..g)]:所产淡水含 盐量应低于10mg/(根据锅炉补给水的要求)

《病理生理学》课程教学资源（课件讲稿）水与电解质的正常代谢 Normal metabolism of water and electrolyte、水、钠代谢紊乱 Disturbances of water and sodium balance

同济大学：《环境科学概论》课程教学资源（教案课件）Part 2 Water Resources and Treatment Topic 1 Water resources 水资源

Plant nutrients Plant growth requires various nutrients Major nutrient elements: C,N, P trace elements: S, Si, Cl, I, and metallic elements(Fe, Mn, Cu, etc) The minor elements because of the low demand can Water y be supplied at adequate rates in natural

History of Agricultural Development Food Gathering Domestication of Crops Organic Farming Transgenic Farming since Green Revolution) High inputs of energy subsidies including fertilizers, pesticides, fossil fuels, mechanization, irrigation advanced technology High outputs at the expense of environmental integrity Contamination of ground water surface water by agrochemicals sediments Hazards to human and animal health(e.g. residual effect of methamidophos in vegetables, Agent orange in Vietnam, cross-Atlantic DDT contamination Loss of genetic diversity in plants and animals

Every community produces both liquid and solid wastes and air emissions. The liquid waste-wastewater is essentially the water supply of the community after it has been used in a variety of applications. From the standpoint of sources of generation, wastewater may be defined as a combination of the liquid or water-carried wastes removed from residences. institutions and commercial and industrial establishments together with such groundwater

Significant features: DVZ - JET WASH oil drainage Self-cleaning with sea water using a reversible pump Automatic electrode cleaning DBGM 8404946 Utilization of the adhesion tendency of oil to aid separation

一、饮用水水质标准 Sanitary Standards for Drinking Water Quality 保证饮用水安全,保护人民身体健康 的一项标准,是卫生部门开展饮水卫 生工作,监测和评价饮用水水质的依 据