The house that cack built

 作者:古琰霁     |      日期:2019-03-04 06:20:01
By Andy Coghlan COUNTRIES running short of landfill space could soon be using sewage to build homes for their citizens instead of dumping it. A team in Taiwan has found that sludge from sewage works can be used to bulk up ordinary house bricks. “It’s a win-win situation because it converts the wastes into useful materials and alleviates disposal problems,” says Chih-Huang Weng, leader of the team at I-Shou University in Kaohsiung County that devised the process. The impetus behind the idea was to find new uses for the 670,000 tonnes of sewage sludge the island produces each year,