Some of the important modes of waste disposal are :
MANAGEMENT OF HAZARDOUS WASTES
The following methods are adopted for the disposal of harmful waste materials.
There are permanent storage facilities in secured lands for military related liquid and radioactive waste materials. High level radioactive wastes are stored in deep underground storage
2. Deep well
Deep well injection It involves drilling a well into dry porous material below ground water. Hazardous waste liquids are pumped into the well. They are soaked into the porous material and made to remain isolated indefinitely.
The burning of materials is called incineration. Hazardous bio-medical wastes are usually disposed of by means of incineration. Human anatomical wastes, discarded medicines, toxic drugs, blood, pus, animal wastes, microbiological and biotechnological wastes etc., are called bio-medical wastes.
Reuse and recycling technique
The separating out of materials such as rubber, glass, paper and scrap metal from refuse and reprocessing them for reuse is named as reclamation of waste or recycling.
(54% Paper recovery) Can be repulped and reprocessed into recycled paper, cardboard and other products
(20% recovery) Can be crushed, remelted and made into new containers or crushes used as a substitute for gravel or sand in construction materials such as concrete and asphalt.
Preparation of Compost
Biodegradable domestic wastes such as left-over food, fruit and vegetable peels, and leaves of potted plants, etc., can be converted into compost by burying in a pit dug into ground, and used as manure.