IJFANS International Journal of Food and Nutritional Sciences

ISSN PRINT 2319 1775 Online 2320-7876

Disposal of Water Treatment Wastes Containing Arsenic - A Review

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Dr Ankita Mittal

Abstract

In poor nations, solid waste management is often unsustainable, depending on uncontrolled disposal in landfills. Because arsenic (As) is extremely mobile and has the potential to leak back into the environment, disposing of treatment leftovers produced by removing As from drinking water poses particular challenges. Surface and ground-waters. This study examines the disposal of As-containing water treatment pollutants. Stabilization/solidification (S/S) technologies, which are presently utilized to treat a variety of diseases, are given special attention. As-containing industrial wastes these have been evaluated to see whether they are suitable for treating Asthma. Contains effluent from water treatment Mixtures of Portland cement and lime are anticipated to be (at least in part) recycled. suitable for sorptive filter wastes, but may not be suitable for precipitative sludges, because Cement hydration may be slowed by ferric flocs, which are often employed to sorb As. Brine produced as a consequence of the regeneration of the use of activated alumina filters is expected to speed up the hydration of cement. Portland cement has the ability to immobilize soluble substances. Arsenites have been effectively utilized to stabilize As-rich sludge’s, and it may also be useful for treating other types of sledges. sludges produced by precipitative removal systems As(III) is oxidized to As(V), and As(V) is formed. Calcium–arsenic compounds have a significant role in the immobilization of as in cements. Geopolymers are a kind of polymer that may be used to make alternative binder systems for the treatment of alumina and metal hydroxide-rich wastes and As wastes produced with activated alumina may have potential. Cemented surfaces provide a long-term stability.However, the fate of arsenic-bearing wastes is unclear, since they, like many cements, are sensitive to carbonation. As a consequence of these side effects, As may be re-released in the future.

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