NSU Research Contributions

Title : Physical Properties of Dewatered Waste Sludge from Textile Processing Wastewater Facility for Construction Material Application

Authors : Md Tousif Rahman, & Dr. Nadim Khandaker

Abstract : Bangladesh is the leading manufacturer of readymade garments in the world. To feed this industry there are about three thousand textile fabrics processing facilities. These facilities treat their generated wastewater by biological treatment. Biological waste stabilization generates substantial bio-solids that are separated out and dewatered before final disposal. One of the dilemmas this vital industry is facing is how to safely dispose the generated dewatered solids. Towards finding a sustainable solution we have systemically characterized the dewatered solid waste from one of the world’s largest towel processing facility to see its possible application in the construction sector for safe sequestration. We have looked at properties such as water/moisture content, ash content, specific gravity, particle size analysis, liquid limit, liquidity index, and presence of chromium, cadmium and sodium chloride. The result of analysis showed that heavy metal is not of concern although the sludge has high sodium salt content. The waste sludge has high water content, high volatile fraction, low specific gravity, and low dry density. As a result, it will reduce the unit weight and compressive strength of the clay bricks if added directly as an additive but adding this waste sludge in mix proportion can be a good solution to produce clay bricks and thus finding a sustainable waste sludge disposal method for the textile industry of Bangladesh.

Journal :	Volume :	Year : 2018	Issue :
Pages : 25-30	City : Singapore	Edition : 1st	Editors : Jayeeta Chattopadhyay, Rahul Singh, Om Prakash
Publisher : Springer	ISBN : 978-981-13-2115-3	Book :	Chapter :
Proceeding Title : Renewable Energy and its Innovative Technologies	Institution :	Issuer :	Number :