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Table 21 Maintenance for subterranean arsenic removal and electrocoagulation

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

Intervention Comments
Low pressure nanofiltration - membrane filtration -
Subterranean arsenic removal Maintenance - No additives and no sludge handling (Van Halem et al., 2010, Gupta, 2010).
Electrocoagulation Negative - Units not always operated as per instructions – pump not switched on or carrying out electrocoagulation for less than three hours (Wan et al., 2011).