Ghana waste management company introduces scientific approach to liquid waste management

Rapid development and increased population growth have resulted in the generation of high volumes of solid and liquid waste in urban areas. According to the Greater Accra Metropolitan Area (GAMA) World Bank-funded sanitation and water project, 26,000 cubic meters of waste is generated in Ghana’s national capital Accra per day. To help solve this problem, waste management company Sewerage Systems Ghana Limited has put up a Septage tank treatment plant, the Lavender Hill and Mudor Fecal Treatment Plant, in Accra to ensure proper and efficient sewerage disposal, according to a News Ghana report.

The 40 million USD ultra-modern plant, constructed by experts from China’s Nanjing Wonder Environment Technology Company, has the capacity to receive 80 per cent of the entire human waste generated in Accra. It is currently receiving between 200 and 250 trucks of human waste daily and has been designed by the Chinese experts for a lifespan of 20 years.

Waste-News4Prior to its construction in 2013 and commissioning in 2016, the city practiced primitive method of disposing of fecal waste where cesspit emptiers are directly emptied into the ocean, posing both health and environmental problems, as per the report.

The plant, said to be the first of its kind in the sub-region, consists of a primary treatment stage which includes screening, primary settling, raw Septage and sludge dewatering. A secondary treatment stage includes anaerobic digestion (UASB), anoxic-oxic digestion and secondary setting while a tertiary treatment phase comprise of ultra violet disinfection; biogas utilization, digested sludge dewatering.

The plant also comprises of a modern laboratory which tests both the influent and the effluent qualities of waste water. The final effluent is pumped back into the system for reuse in the plant. The solid materials generated through the system are used for compost manure while the biogas generated is harnessed and used as a source of alternative energy for the plants. Lavender Hill and Mudor Fecal Treatment Plant which is using Chinese technology has been enjoying high patronage since its full operation early this year, the report stated.