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

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

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

1. Solid sorption concepts Adsorption Adsorptiv adsorbent-adsorbatePhysical adsorption .Tragergas zeolite-water, silica gel-water, activated carbon- methanol/ammonia (endotherm) Chemical adsorption CaCl2-ammonia, Metal hydride Adsorbat hydrogen

1. Concept of Evaporation and Transpiration 2. Water use of crop 3. Factors affecting evapotranspiration 4. Concept of reference crop evapotranspiration (ETo) 5. Crop evapotranspiration under standard conditions (ETc) 6. Crop evapotranspiration under non-standard conditions (ETc adj) 7. Calculation of reference evapotranspiration, ETo 8. Kc and crop 9. α value method for ETc calculation

1、水轮机的空化余量 Cavitation margin (turbine) 2、水轮机空化系数 Cavitation coefficient (turbine) 3、水轮机的吸出高度和安装高程 Suction head and setting elevation of water turbine 4、水泵的空化余量 Cavitation margin (pump) 5、泵的安装高程与吸入真空 Suction head and setting elevation of water turbine 6、泵的空化比转速 cavitation specific speed of pump 7、泵的空化余量与叶片进口安放角的关系 Relation between Cavitation margin and leading angle

第一节水污染控制工程概述 第二节水资源(Water resource) 第三节水污染(Water pollution)

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

外研版（三起）（2012）小学英语六年级下册Module 3 Unit 2 The cows are drinking water.Module 3 Unit 2 The cows are drinking water.课件(4)

分析化学是发展和应用各种方法、仪 器和策略,以获得有关物质在空间 和时间方面组成和性质的一门科学, 是表征和量测的科学。 原子量的准确测定、工农业生产的发 展、生态环境的保护、生命过程的 控制等都离不开分析化学