Waste management
Human activities related to livelihood and welfare generate waste.
All wastes are pollutants and they create pollution in one way or other.
Fundamentally air, land and water pollution results mostly due to improper
disposal of wastes. (Waste management)
Pollution, Pollutants
Pollution is the human caused addition of any material or energy
(heat) in amounts that cause undesired alterations to water, air or soil. Any
material that causes the pollution is called a pollutant.
Classification of wastes
1. Bio – degradable waste
These are wastes capable of being removed or degraded by
biological or microbial action. Waste from agricultural products, animal wastes
and waste from food processing, leather, fibre, paper and wood etc. come
under this group. (Waste management)
2. Non bio-degradable waste
The substances which are normally not acted upon and decomposed
by microbes are non-bio degradable wastes. It includes mineral waste,
mining waste and industrial waste and non-degradable metallic and plastics
substances. (Waste management)
3. Mixture of biodegradable and non-biodegraded wastes
It includes municipal waste and industrial waste. Municipal waste
contains household garbage, piles of food scrapes, old newspaper, discarded
and throw away materials, glass, cans, old appliances, broken materials,
leather shoes, fibres, plastics and others. Construction waste materials,
packaging materials, sewage, hospital waste, junk and vehicles are varied
types of urban wastes. All these wastes are found in the form of semisolid,
solid, semiliquid, sludge and in fly ash form. (Waste management)
Related Topics in Zoology:
Bio Zoology All Important Topics
- Human population and explosion
- Population Explosion
- Growing Population and Environmental impacts
- Global warming – Green house effect
- Ozone layer depletion
- Prevention and Effect of Ozone depletions
- Waste management – Classification
- Management of hazardous wastes
- Management of non hazardous wastes
- Waste water treatment and management
- Biodiversity
- Conservation of Biodiversity
- Characteristics of a Bioreserve
- Energy crisis and its environmental impact
- Steps to be taken to resolve energy crisis
- Environmental impacts of Power Sources
- Poverty and environment
- Fresh water crisis and management
Unit 6. APPLIED BIOLOGY Topic List Zoology
- Livestock and Management
- Important cattle breeds and their characteristics
- Milch breeds (or) Dairy breeds
- Dual purpose breeds & Draught breeds
- Exotic breeds of cattle
- Common diseases and control in Cattle – Contagious diseases
- Non-contagious diseases – Cattle
- Techniques adopted in cattle breeding
- Poultry Breeds
- Farming methods
- Poultry byproducts
- Fish Pond
- Edible Fishes Of Tamilnadu
- Medical Lab Techniques – Stethoscope
- Sphygmomanometer
- Haemocytometer
- Urine Sugar analysis
- ECG Electrocardiogram
- Computed Tomography CT
- Endoscopy (Laproscopy) techniques , Artificial Pacemaker
- Autoanalyser