This work presents the chemical free arsenic removal method from groundwater and its successful implementation in West Bengal for community water supply.
The paper presents a residue-free kind of water treatment process for the removal of metals like arsenic, iron and manganese and other water constituents like ammonia which may deteriorate drinking water quality. In this process the underground body, i.e. the aquifer, is used as a natural reactor. The results of field experiments of two technical-scale in-situ groundwater treatment plants are reported.
The main aim of this article is to give a review on the state of the art of available processes for the advanced treatment of wastewater from Textile Processing Industry (TPI). After an introduction to the specific wastewater situation of the TPI the article reviews the options of process and production integrated measures. The available unit processes and examples of applied combinations of unit processes are described. A special place is given to the in-plant treatment, the reuse of the treated split flow or mixed wastewater and the recovery of textile auxiliaries and dyes.
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