Summary of eight national standards for sludge disposal!
730Firstly, sludge from public sewage treatment plants (PSTPs), which are used solely for the treatment of domestic sewage in towns and cities, does not normally have hazardous characteristics and can be managed as general solid waste. In addition, sludge generated by treatment facilities specialised in treating industrial wastewater (or treating small quantities of domestic wastewater at the same time) may have hazardous characteristics...
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