ANSWER:

Sludge: Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation SYSTEMS. ... Industrial wastewater treatment plants produce solids that are also referred to as sludge.

DRIP irrigation: Drip irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants, either from above the soil surface or buried below the surface. The goal is to place water directly into the root zone and minimize evaporation.

Bawris: Bawris are the traditional way of water harvesting. Bawris are deep wells DUG in the ground which have steps to reach the water stored.

The chemicals most commonly used as primary disinfectants are chlorine, chlorine dioxide and ozone.

Clarified water from wastewater

Wastewater is COLLECTED and passed through bar screens where plastic bags, sticks, cans, napkins, etc. are removed. This water then enters a grit and a sand removal tank. The speed of the water is decreased so that the sand particles get settled at the bottom.

The factors responsible for the depletion of water table are as follows: 1)Increasing population - As a result of increasing population, all the facilities such as houses, shops, roads, offices, pavements, etc. ... 2) Increasing industries - Most of the stages of manufacturing processes in industries require water.