MRI says that the Wastewater Inclined Plate Settlers enable primary, secondary and tertiary clarifiers to remove more solids in less space. The design is claimed to yield up to four times more settling area in existing basins and allows a smaller basin footprint in new construction. The company adds that this reduces treatment and construction costs while significantly lowering total suspended solids discharge. According to MRI, on-site studies of the wastewater design show TSS discharge is significantly lower when the system is installed, with clarifier rates averaging less than 10 mg/L for secondary and less than 1 mg/L for tertiary. Optional covers for plate settlers and troughs are designed to control odours and eliminate algae growth. Low-maintenance MRI hoseless Cable-VacTM Sludge Collectors remove solids in secondary and tertiary uses, and primary basin sludge removal is by circular scrapers or chain and flight.