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Algal-Based Tertiary Treatment in Maturation Ponds
Expanded Title:While South Africa has a strong water sector with a track record in innovation, we have not managed to provide adequate sanitation to all, nor have we managed to effectively treat domestic wastewater. The main issues highlighted for the water and sanitation service delivery in South Africa are: poverty, inequality and unemployment coupled with the lack of capacity (skills) in municipalities; funding challenges; fragmented or incoherent policies; aging infrastructure; lack of long-term planning and the lack of operation and maintenance plans for water and sanitation infrastructure. The Green Drop assessments confirm that WWTW in South Africa in general, and in the study area specifically, are facing significant challenges. As part of the Department of Science and Technology’s (DST) innovation partnership for rural development programme (IPRDP), implemented by the Water Research Commission (WRC), with the Council for Scientific and Industrial Research (CSIR) as the project team, the Motetema Waste Water Treatment Works (WWTW) in the Sekhukhune District Municipality of Limpopo Province, was identified for pilot implementation of the algae-based wastewater treatment system. The Motetema WWTW is a waste stabilisation pond system that consists of two sets of 6 ponds that operate at a time and serves an estimated 1560 households. The effluent discharged from this WWTW mostly do not comply with National and Provincial regulations, posing a high risk to the environment and natural water sources as well as to human and animal health. Treatment ponds are commonly used in South African rural areas for the decentralized treatment of domestic sewage. These rural treatment ponds are cost effective as they depend mainly on natural processes without any external energy inputs. The need for further assimilation of nutrients before discharging of wastewater in phosphate sensitive rivers using algae provides an environmentally friendly, cost effective option.
Date Published:01/02/2017
Document Type:Research Report
Document Subjects:Wastewater Management - Sludge management, Wastewater Management - Sewers
Document Format:Report
Document File Type:pdf
Research Report Type:Technical
WRC Report No:TT 706/16
ISBN No:978-1-43120-876-0
Authors:Oberholster PJ; Claassen M; Nortje K; Genthe B; Steyn M; McMillan P; Cheng P; de Klerk L; Naidoo M; Masangane W; Tancu Y; Luus-Powell WJ; Sara JR; Bal KD; Mokgawa MP; Smit WJ
Project No:K5/7050
Organizations:CSIR; University of Limpopo
Document Size:1 877 KB
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