Displaying items by tag: sewage sludge

Qatar: The Ministry of Environment and Climate Change has organised a symposium to launch a new ‘green’ cement made from sewage waste, with aims to support environmental sustainability and the circular economy in line with the Qatar National Vision 2030. The symposium highlighted the role of scientific research in transforming sewage into green cement. The cement is produced by treating sludge, resulting from solid sewage waste by burning, grinding and mixing it with catalysts, then is practically applied in the manufacture of building blocks and foam concrete. The amount of accumulated sewage waste is estimated at about 40,000t/yr, which can be used to produce 40 million bricks or 150,000m³/yr of foam concrete.

Bangladesh: The government inaugurated the Dasherkandi sewage works, the largest sewage treatment plant in South Asia, in Dhaka on 13 July 2023. United News of Bangladesh has reported that the plant will incinerate dried sewage sludge to produce 16,400t/yr of ash. The plant will supply this to the local cement industry for use as a raw material.

The Dasherkandi sewage works is one of five planned new sewage plants expected to process 100% of Dhaka's sewage by 2030.