tertiary treatment of effluent treatment plant:

The industrial wastes should be treated before being let into the water bodies. The toxic materials should be removed, the metallic compounds should be precipitated, the acids and alkalis should be neutralized and the temperature of the hot waters should be reduce..

Finally in the third step, salts like nitrates and phosphates are removed by precipitation technique...

Sewage Treatment The ultimate return of used water to the environment is done by treating sewage. Typically, sewage treatment involves three stages. They are primary, secondary and tertiary. The solids are first separated from the waste water. The dissolved biologic..

. Pyrolysis of carbonaceous wastes like firewood, coconut, palm waste, corn combs, cashew shell, rice husk paddy straw and saw dust, yields charcoal along with products like tar, methyl alcohol, acetic acid, acetone and a fuel gas. Anaerobic/aerobic decomposition of biodegradable municipal and dome..

Often a small quantity of vegetable oil or mineral oil is added to grains of legumes to protect them from insects. The treatment prevents laying of eggs, reduction in egg hatching and prevention of larval development. Some of the plant products used for this purpose are neem ke..

a) Treatment plants established to treat industrial effluents before they are released to rivers. b) Reuse of treated water for non drinking purposes. c) Use of sewage and city waste water for irrigation to agricultural and horticultural crops. d) Ban and imposition o..

Lysenko (1928) a Russian geneticist found that artificial cold treatment of germinating winter wheat seeds could induce flowering if grown in spring. This process of cold treatment that hastens flowering is called vernalisaio..

Acyl halides on treatment with ammonia or amines form primary, secondary or tertiary amides which are reduced with a strong reducing agent like LiAlH 4 to form corresponding amine..

Question: Plants can be made disease-resistant by_________. 1. heat treatment 2. hormone treatment 3. colchicines treatment 4. breeding with their wildly growing relatives Answer: ..

The fertility of soil can be enhanced by using chemical fertilizers, which provide the essential plant nutrients, potassium, nitrogen and phosphorus. The most important phosphatic fertilizer is the superphosphate of lime, Ca(H 2 PO 4 ) 2 . This is produced directly from phosphate rock ..