case ststudy -210130103021..DAxa.pptx
- 1. water pollution noise pollution Air pollution .... Biomedical waste E-waste....諮 Waste segregation .
- 2. water pollution 皚What is water pollution ? Major types of pollutants , sources and effects Point and nonpoint sources Is the water safe to drink ? H H Types, effects and sources
- 3. 金Major Categories of Water Pollutants Infectious Agents Bacteria , Viruses , Protozoa , Parasitic Worms ≪ Source : Human and animal waste Oxygen - Demanding Waste Organic debris & waste + aerobic bacteria ≪Source : Sewage , feedlots , paper mills , food processing . I ....norganic Chemicals Acids , Metals , Salts . Sources : Surface ...............runoff , Industrial effluent , household cleansers Radioactive .... .....Materials lodine , radon , uranium , cesium , thorium Source : Coal & Nuclear Power plants , mining , weapons ...... ......production , natural Plant Nutrients Nitrates , Phosphates , . Source : Sewage , manure , agricultural and landscaping runoff Organic Chemicals - Oil , Gasoline , Plastics , Pesticides , .......Solvents , detergents - Sources : Industrial effluent , Household .......cleansers , runoff from farms and yards Eroded Sediment - Soil , Silt ........Heat / Thermal Pollution 謂 Source : Power plants , Industrial
- 8. Solutions water pollution -- Prevent groundwater contamination Greatly reduce nonpoint runoff Reuse treated wastewater for irrigation Find substitutes for toxic pollutants Work with nature to treat sewage Practice four R's of resource use ( refuse , reduce , recycle , reuse ) Reduce resource waste Reduce air pollution Reduce poverty Reduce birth rates What can you do? Water pollution -- Fertilize your garden and yard plants with manure or compost instead of commercial inorganic fertilizer . Minimize your use of pesticides . Never apply fertilizer or pesticides near a body of water . Grow or buy organic foods . * Compost your food wastes . * Do not use water fresheners in toilets . Do not flush wanted medicines dow the toilet . - Do not pour pesticides , paints , solvents , oil , antifreeze , or other products containing harmful chemicals down the drain or onto the ground . 3 - T
- 9. Drinking water Quality Purification of urban drinking water Purification of drinking water in developing countries Bottled water
- 11. Sound ≠ Sound is a vibration that propagates as a mechanical wave of pressure and displacement , through some medium ( i.e. air or water ) . Sound refers to only those vibrations with frequencies that are within the range of hearing for humans
- 12. What Is Noise pollution Any unwanted sound that penetrates the environment is noise pollution . In general noise pollution refers to any noise irritating to one's ear which comes from an external source
- 13. Sources of Noise Pollution Household Sources Social Event Commercial and Industrial Activities Transportation
- 14. ...Air pollution ≠What Is Air Pollution ?? Air pollution is the introduction of chemiclas , particular matter , or biological materials that cause harm to discomfort to humans or other living organisms , or cause damage to the natural environment or built environment , into the atmosphere .
- 15. . Types Of Air Pollution There are several types of air pollution , mainly Indoor Air Pollution and Outdoor Air Pollution These include . . smog , acid rain , the green house effect and hole in ozone layer . One type of air pollution is the release of particles into the air . Another type of air pollution is the release of poisonous gases .
- 16. It is caused when pollutant combines with droplets of water in the air . The effects of acid rain on the environment can be serious .
- 19. Biomedical waste
- 20. Biomedical waste Waste generated from hospitals Waste generated from Health care facilities Waste generated from Health research laboratories .
- 21. E-waste 署 Electronic waste loosely discarded , surplus , obsolete , broken electrical or electronic devices
- 25. Thank you