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Generally, industrial wastewater does not contain sufficient micronutrients to support optimal bacterial growth as a number of micronutrients are essential for biological cell function and activated sludge stability. A laboratory scale activated sludge process using porous pots with a capacity of 4.5 L has been used to mimic the operation of an activated sludge plant. Water soluble B group vitamins and trace metals including calcium, cobalt, copper, iron, magnesium, molybdenum and zinc were chosen for the micronutrient addition trials. The results indicated that COD removal was significantly improved by 7 to 12% compared to a control by the addition of calcium, cobalt, copper, iron and magnesium.

Item Type:	Refereed Article
Keywords:	micro-nutrients, activated sludge, wastewater treatment, porous pots, trace elements
Research Division:	Chemical Sciences
Research Group:	Physical Chemistry (incl. Structural)
Research Field:	Colloid and Surface Chemistry
Objective Division:	Environment
Objective Group:	Land and Water Management
Objective Field:	Urban and Industrial Water Management
Author:	Barnett, J (Miss Jessica Barnett)
Author:	Stack, K (Dr Karen Stack)
Author:	Lewis, T (Dr Trevor Lewis)
ID Code:	79789
Year Published:	2012
Web of Science® Times Cited:	3
Deposited By:	Chemistry
Deposited On:	2012-10-03
Last Modified:	2017-10-25
Downloads:	358 View Download Statistics