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Table 20 Maintenance for ion exchange technologies

From: Are interventions to reduce the impact of arsenic contamination of groundwater on human health in developing countries effective? A systematic review

Intervention Comments
AFDWS-2000 (patent pending) Maintenance - Requires periodical sludge removal or backwash (Hossain et al., 2005).
Ferric hydroxide -
Bucket of resins (patented) -
Tetrahedron/Tetratreat Negative - Sutherland et al. (2002) reported an issue with taste, smell and costs.
ArsenX Maintenance - Filter needs to be backwashed every morning for 10–15 minutes. Fresh or regenerated media is required upon exhaustion of adsorption column. Potential issues with sludge disposal (Sarkar et al., 2007).