. 2019 Apr 10;3:100030. doi: 10.1016/j.wroa.2019.100030

Table 1.

Comparison of service areas, treatment volumes and steps at wastewater treatment plants.

Features	Charleston Water System (CWS)	Mount Pleasant
Features	Plum Island	Rifle Range Road	Center Street
Population served (people) in 2017	180,000	53,000	32,000
Plant Capacity (x10⁶ L d⁻¹)	136	22.7	14.0
Avg. Volume Treated in 2017 (x10⁶ L d⁻¹)	83.3	18.9	11.4
Treatment Steps	⁃ Primary screening ⁃ Primary clarifiers ⁃ Activated sludge ⁃ Secondary clarifiers ⁃ Sludge handling ⁃ Dewatering (Rotary Press) ⁃ Disinfection (NaOCl)	⁃ Primary screening ⁃ Anoxic selectors ⁃ Activated sludge ⁃ Secondary clarifiers ⁃ Sludge handling ⁃ Dewatering (Belt Press) ⁃ Disinfection (NaOCl)	⁃ Primary screening ⁃ Anoxic selectors ⁃ Activated sludge ⁃ Secondary clarifiers ⁃ Sludge handling ⁃ Dewatering (Belt Press) ⁃ Disinfection (NaOCl)
Service Composition	⁃ Residential ⁃ Commercial ⁃ Industrial	⁃ Residential ⁃ Commercial	⁃ Residential