Water & Solutions Forum – Science, Processing and Maintenance



Outline of water purification technology – Sludge treatment and effective utilization



Sludge treatment and effective utilization

 In wastewater treatment, byproducts are generated along with the removal of pollutants, and these byproducts are called sludge, which accounts for the largest proportion of industrial waste. Most of this sludge is reduced in volume by concentration, dehydration, incineration, etc., and the last remaining ash is landfilled. Today, the sludge is being used effectively for energy recovery, compost, cement raw materials, construction materials, and the like. Figure 1 shows the outline of sludge treatment and effective utilization.

図1 排水処理汚泥の処理と有効利用
Figure 1 Wastewater treatment Sludge treatment and effective utilization.

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