The Production of Sludge

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Sludge could be produce in many ways, it can be from waste settlement to the dry process. Brick is one of the flexible product that gain attention from researcher to be incorporated with different type of sludge material such as waste water sludge, water treatment sludge, marble sludge, effluent treatment plants (textile industry) sludge and arsenic contaminated sludge.

2.1 Textile sludge

Jahagirdar et al (2013) discussed the reuse of textile mill sludge in burnt clay bricks. Textile mill sludge was mixed together with different proportion (5% to 35%) as the raw material in this study. The brick was fired at 600 to 800ºC and for 8, 16 and 24hours. Base on the result textile sludge can be added up to 15% as it gives compressive strength above 3.5N/mm2 and the water absorption ratio is less than 20%.
According to (Herek et al, 2012) investigated on incorporated the textile laundry sludge into a brick showed that sludge can be incorporate until a concentration of 20% in terms of the mechanical properties. The compressive strength for the brick was 3.73Mpa for the control brick and 4.62Mpa for the sludge brick. For the water absorption result had shown that 15.73% and 10.10% for control brick and sludge brick respectively. Besides, the produces brick are safe according to applied leaching and not exceed to the standard limits. (Baskar et al, 2006) discussed about characterization and reuse of textile effluent treatment plant waste sludge in clay bricks. In this study the
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