Study on pretreatment methods of measuring heavy metals for treating municipal sludge;

New technology for solidifying sewage sludge;

The results of the investigation on sludge treatment systems over 400 municipal wastewater treatment plants in China show that only about 46 plants have sludge anaerobic digestion systems,most of which adopt thickening/mesophilic anaerobic digestion/dewatering process.

Anaerobic digestion and anaerobic composting of municipal sewage sludge;

This paper aims at the variation laws of the physicochemical and bio-toxic characteristics of municipal sewage sludge and organic garbage during the alternative aerobic and anaerobic composting.

In this paper the characteristics of municipal sewage sludge in China are analyzed.

The sludge composting is so ideal treatment approach,in reduction,sound,resources of urban sewage sludge,as to settle the problem of sludge disposal and utilization finally through the effective control of ventilation,the initial moisture content,temperature,C/ N ratio,pH,the choice of materials and other factors.

The disposal of urban sewage sludge is the issue that both environmental protection workers and government concerns about, sludge production and the cost of its disposal is increasing continually, which makes the disposal of sludge becoming a burden of municipal construction and urban development.