Remediation of arsenic contaminated soil was studied in this work, experiments were carried out out using simulated soil contaminated arsenic treated with an extractant solution comprising of citric acid, oxalic acid, sodium hydroxide and sodium carbonate. Experiments were carried out by treating the soil with the extractant solution.

Quality of any water is determined by the quantity of source water, its exposure to contaminants during collection, treatment and storage. In a roof top rainwater harvesting system, which consists of a collection system, a conveyance system and a storage system, contamination of water can occur at any of these stages.

Having an ISO-14001 Environmental Management Systems (EMS) will help and enhance a firm's economic performance and at the same time will improve its environmental performance. The benefits of ISO-14001 lie in cost savings through energy consumption, raw material input, waste management, environmental impact reversal as well as an improved public image.

The break even cost of treated water from a water treatment plant depends on the capital cost and the operation cost through out its life span. The main capital investments in Garden Reach water works occured in two phases. The operation of first phase was started on 1982 and second phase from 2000.

The purpose of the present study was to describe the pattern of Spatial Pollution Rose pattern in the neighbourhood of thermal power stations in Neyveli, near 200 km south west of Chennai.

This paper outlines simple home made Activated Carbon-UV home water purifier system to remove taste, odour, synthetic organic chemicals (SOCs), pesticides, herbicides and detergents from drinking water and disinfect by UV radiation at the consumer end.

Textile processing plants operating in and around Kolkata utilize a wide variety of dyes and other chemicals. Many of these chemicals are not retained in the final textile product but are discarded after they have served their purpose or are driven off into the atmosphere during heat treatment. The main aim of this study is to determine the quantity of material loss during the dying operation in a mechanized textile dyeing industry.

Arsenic in groundwater beyond allowable concentration of 0.05 mg/lit in some parts of India, has posed serious threat to well being of large section of people. As one of the major mitigation, the contaminant is being removed from extracted groundwater and then the water is pressed for essential use of the people. There are several methods being employed for removal of arsenic in it's pentavalent as well as trivalent forms. The sludge generated from co-precipitated flocs or backwater water from absorbed/adsorbed/Ion exchangers etc.

Defluoridation is removal of excess fluoride from water. Several methods have been suggested for removing excess fluoride in water. One of such is adsorption. Present study has been conducted to investigate the efficacy of sludge of water treatment plant as defluoridating adsorbent material. The experiment has followed batch process.

The availability, development and management of ground water plays a vital role in the sustainable development of coastal regions. The difference between the recharge and discharge from the aquifer decides the level of water table. Water table generally rises during the monsoon as the rainfall infiltrates into the subsurface ground and the water table is lowered during summer.