Table 21 Maintenance for subterranean arsenic removal and electrocoagulation
Other | |
|---|---|
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). |