ENVIRONMENTAL SCIENCE AND ENGINEERING (BCE101) Requirment of Human Being :‐ ‐ Energy ‐ Water ‐ Food Quantitative & Qualitative Environment Engineer’s Work – → To provide good quality of water (Water treatment plant) → Waste water treatment → Control on Air Pollution to Maintain the Air Quality (Temperature, Pressure, Wind, Moisture) → Control on Water Pollution → Solid Waste Management (Storage, Separation & Transportation) 1‐Book Environment Engineering By Gerard Kiely 2‐H.S. Peavy D.R. Rowe G. Technobanog Lous 3‐ Water Supply Engineering by S.K. Garg 1.1 Ecological Perspective:‐
→ The environmental engineer is interested to use the varies physical resources such as natural energy (waves, wind, minerals, hydroelectric) and water for domestic & living purpose. → Therefore, It has to understand the functioning with the living system and its interaction with the environment. → Environment – (or Ecosystem) It consists of four major element such as (i) Land (ii) Water (iii) Air and (iv) Living Organism (Plant & Animals) Environment (Ecosystem) Physical Environment (Abiotic) Biological Environment (Biotic) Living Organisms (Planteanimals, Viruses, Bacteria, Fungi) Hydrosphere Lithosphere Atmosphere (Water over the earth (Solid earth & soils) (air upto a distance & inside the earth) of 700 km.) → Living organisms are dependent on each other & depends on the physical environment. Ex. Plans grow on land & in water. Herbivorous animals use the plant as food. Carnivorous animals eat herbivorous animals.
1.2 Value of Environment :‐ or Resources Natural Resources Renewable (Energy from sun, water and Biological cycles) It is recycled & reused. Non‐renewable (Fossil, Fuel, Minerals etc) Forest Plantation They are not Replaced. Amount are finite. Abstract (Animal, plant and natural sight used for tourism) 1.3 Environment Auditing:‐ Listing of all the resources of an area Different types of developmental work go ahead in an area depends on the economical consideration. It has to restrict the economy (money) cased. Therefore, We have to audit or make a list of all the resources of the area. (Environmental auditing) Auditing No’s of species (Living organisms) exist Uses of the living environment. Direct uses Indirect uses
Food, Industrial & Commercial products, tourism, medicines etc. 1.3.1 Direct use Food – Plants or domesticated animal products Industrial & commercial products: ‐ Mineral, fossil, fuel, wools, cotton, jute, rubber etc. Medicines‐ 1.3.2 Indirect Uses 9 Biodiversity is the biological processes themselves that provide the value. It is regarding about indirect uses of environments. 9 Environment consists of populations of species‐with air, water, land. Population of one species (Environment) Biological mixed together with other Process helps species The entire system. Communities Many communities are Combined Landscape