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NATSURV 6 Water and Wastewater Management in the Edible Oil Industry (Edition 2)
Expanded Title:Manufacturing and processing industries consume significant quantities of energy and water. In addition, unwanted liquid, solid and gaseous waste is generated along with the intended products. Novel, more sustainable methods are constantly being sought to reduce qualitative and quantitative industrial pollutant loads and re-use water and waste. This move is largely in response to a number of interrelated factors, including higher costs of waste disposal, more stringent legislative requirements, and increasing environmental awareness. Between 1986 and 2001, the Water Research Commission (WRC) of South Africa (SA) commissioned 16 National surveys (NATSURVs) of various agri and non-agri industries [malt brewing, poultry, red meat, edible oil (EO), sorghum malt and beer, dairy, sugar, metal finishing, soft drink, tanning and leather finishing, laundry, textile, oil and refining, power generating]. This culminated in the publication of 16 separate NATSURV documents, one for each industry. One of these, entitled “Water and wastewater management in the edible oil industry” (WRC TT-40-89) included information about specific and generic production processes, water usage, solid waste generation, and wastewater quality, quantity and treatment practices in SA EO industry. This new survey serves to update the content of the original document, highlighting the changes which have taken place in the industry over the last two and a half decades. The report includes information stemming from an audit of the industry from both a local and global perspective. Limited information about the local EO industry was obtained using combined desktop, site-visit, and laboratory based approaches. In addition to water and wastewater management, the document includes a section on energy audits adoption/non-adoption of sustainable procedures by the industry at large. This document is a comprehensive guide and benchmark tool for local governments, industry players, academics, researchers and engineers. The types of EOs included are delimited to oils which are liquid at standard temperature and pressure. The only major animal oil that fits these criteria and is produced in SA is fish oil; fish oil is included in a separate NATSURV dealing with the fish processing industry. The oil types are thus delimited to seed and fruit oils and the processes are delimited to those directly and indirectly pertaining to the ensilage of raw material (energy consumption only), and cleaning, milling, pressing, extraction, and refinement of EOs. A particular focus is placed on extraction and refinement. Upstream and downstream processes are excluded. However, in some instances, downstream processes cannot be entirely discounted. For example, wastewater emanating from the generation of value-added products such as margarine or mayonnaise may be combined with that from oil extraction and refining. Facilities that produce milled goods as their primary products, with oil being seen as secondary have also largely been excluded.
Date Published:01/01/2017
Document Type:Research Report
Document Subjects:Wastewater Management - Industrial, Wastewater Management - Sewers
Document Keywords:Pollution control
Document Format:Report
Document File Type:pdf
Research Report Type:Technical
WRC Report No:TT 702/16
ISBN No:978-1-4312-0869-2
Authors:Welz PJ; Le Roes-Hill M; Swartz CD
Project No:K5/2404
Organizations:Chris Swartz Water Utilisation Engineers; Cape Peninsula University of Technology
Document Size:1 770 KB
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