KIND OF WATER USE :recycle: (AGRICULTURAL USE Picture2 ( Almost 70% of…
KIND OF WATER USE
Regardless of water source, domestic water supply is treated to ensure its safety.
About 90 of domestic water is supplied by municipal water systems, which is typically include complex, costly storage, purification and distribution facilities.
Domestic activities require a great deal of water
Domestic use includes drinking, air conditioning, bathing, washing clothes, washing dishes, flushing toilets, watering lawns and garden etc.
About 29% is used for lawns and gardens (consumptives use)
Only 2% is used for drinking and cooking (consumptive use)
About 69% is used as a solvent to carry away waste (non-consumptives use). For example : Laundry, bathing and toilets.
Almost 70% of all available freshwater is used for agriculture
Over pumping of groundwater by the world's farmers exceeds natural replenishment by at least 160 billion cubic meters a year.
: 1-3M 3 water to yield just one kilo of rice
: 103 gallons of water for 1 lb bananas
: 469 gallons of water to produce 1 lb of chicken
Agriculture is responsible for most of the depletion of groundwater, along with up to 70 of the pollution.
Uses to generate hydroelectric power
Used for recreation and navigation
Producing metals, woods and paper products
Uses for cooling or cleaning
Chemical gasoline, oils and primary metals are major water users.
Used water for purposes as fabricating, processing, washing, diluting, cooling or transporting a product incorporating water.
Used to dissipate and transport waste products
CAUSE OF THERMAL POLLUTION
: Industrial waste and thermal pollution are the major industrial of pollution
Caused by storm water runoff from warm surfaces such as streets and parking lots
Most common point of thermal pollution is cooling water, which is used to cool machinery.
Occurs when human change the temperature of a body of water
Caused by the removal of trees and vegetation.
EFFECTS OF THERMAL POLLUTION
Photosynthesis and plant growth increase with higher water temperatures.
Effects on aquatic life, there are numerous indirect effects.
Increase the extent which fish are vulnerable to toxic compounds, parasites and disease.
Can result in significant changes to aquatic enviroment