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NATSURV 1: Water and wastewater management in the malt brewing industry - (EDITION 2)
Expanded Title:Beer production for large breweries amounts to over 6,000,000 barrels (704,087 kl) per annum, medium is between 15,000 to 6,000,000 barrels and small is less than 15,000 barrels (17,602 kl) per annum. Since the publication of the first edition of Natsurv 1 in 1986, the number of breweries in South Africa has increased from eight to more than 150, as have production volumes. Previously, most breweries were locally-owned; however, current ownership is both national and multi-national for the large breweries, whilst the medium-, small and craft/micro-breweries tend to be locally owned. Water consumption estimates range from 4 to 8 l/l beer produced, but may be higher in the case of small breweries, generally owing to inefficient water management processes and systems. Water is used for beer production and also for cleaning, sanitation, heating and cooling processes. The malt brewing industry is classified under the food and beverage category and generates three forms of waste: solid (from raw material inputs and packaging), liquid (wastewater from various processes) and gaseous waste. The two predominant streams are solids and liquids. Water used by local breweries is variously obtained from four main sources: borehole, municipal, rain water and fresh water springs. The majority of breweries use municipal water and the quality shows little variation at the different breweries. There are a few breweries that use borehole (well) water and rain water. The pH of waste-water samples (combined waste-water streams) from local malt breweries is circumneutral, which is preferred for the industry internationally. Nitrate loads were much lower at 0.1 mg/l when compared to the 1.5 mg/l described internationally. Parameters such as COD, SS, TDS, TOC, total nitrogen, total phosphorus and soluble ortho-phosphate fall outside of the given ranges or exceed the recommended maximum values; requiring local waste-water pre-treatment before discharge. The study has shown that, for a number of different industrial sectors, there are common technologies available and applicable to reduce resources use and impacts (such as energy and water consumption) and wastewater generation. Many of these technologies would be applicable to breweries in general.
Date Published:01/12/2016
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 676/16
ISBN No:978-1-4312-0856-2
Authors:Ramukhwatho F; Seetal A; Pienaar H
Document Size:5 435 KB
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