Removal of arsenic from drinking water using dual treatment process

Abstract

This paper focuses on determining an efficient and simple method to remove arsenic from groundwater. Arsenic is a naturally occurring element widely distributed in the earth's crust. Arsenic is very toxic when found in large quantities in drinking water. This report documents the selected treatment method and laboratory experimentation of arsenic removal from drinking water in small water delivery systems and domestic water systems. The objective is to expand upon research of new and existing arsenic removal technologies or promote a new, alternative process. Several treatment technologies have been considered to perform this function, but cost and reliability concerns prompted the decision to analyze small-scale, community-based filtration units, specifically. Based upon initial test data, the use of dual treatment method comprising of oxidation-coagulation-filtration and adsorption by activated alumina has proven to be more economic having more capacity and superior reliability as compared to other arsenic removal processes using various other media.

Making Fe0-Based Filters a Universal Solution for Safe Drinking Water Provision

“…Some existing efficient Fe 0 filters have been built by local populations without any particular skills and are maintained by them [56,[111][112][113]. As an example, the community-scale Fe 0 arsenic filter developed at the Indian Institute of Technology Bombay (IITB filter) [56,113] uses commercial iron nails.…”

“…As an example, the community-scale Fe 0 arsenic filter developed at the Indian Institute of Technology Bombay (IITB filter) [56,113] uses commercial iron nails. Each community filter contains some 10 kg of iron nails and should work for about five years.…”

“…Fe 0 filters for households and small communities are presented as a further development of the biosand filter (BSF) [26][27][28][29][30]56,[111][112][113]229]. BSF is neither standardized nor patented [22,111,230].…”

The Effect of Artificial Recharge on Hydrochemistry: A Comparison of Two Fluvial Gravel Pit Lakes with Different Post-Excavation Uses in The Netherlands

“…However as nutrient loading from the watershed is decreasing over time as the decreasing NO 3 and PO 4 concentrations of BP Lake and Meuse River indicate, arsenic or other metal concentrations in water of DLV Lake could increase, as they are released by the lake sediments [7,45]. In that case additional water treatment could be needed [46]. Other metals (e.g., manganese) could become a problem by accumulating over time [11] needing special attention during treatment and transport of drinking water [47].…”

Optimization of coag-flocculation processes of a newly synthesized quaternized oil palm empty fruit bunch cellulose by response surface methodology toward drinking water treatment process application

“…Diverse conventional and advanced water treatment processes have been developed for producing clean and safe water for consumption offering improved performance and cost-effective processes. Recently, Roy et al (2015) have determined a simple, cheap, and efficient water treatment to remove arsenic from groundwater in augmentation of drinking water application. Dual treatment of conventional techniques consists of oxidation coagulation-filtration, and adsorption were found to be economically feasible and efficient compared to the others.…”