In this paper, it was studied that the effects of heating rate and four metal oxide on combustion characteristics excess sludge, such as CaO, Fe 2 O 3 , MgO Al kinetic parameters sludge were obtained based Coats-Redfern model. This result indicated ignition can be restricted with increase rate, but conducive to burnout, increasing about flammability, stability comprehensive characteristic index...

The distribution coefficient (Kd) and the organic carbon distribution coefficient (KOC) were determined for four Perfluorinated Compounds (PFCs) to three different types of sludge taken from a conventional Sewage Treatment Plant (STP). Batch experiments were performed in six different environmental relevant concentrations (200ngL(-1)to 5μgL(-1)) containing 1gL(-1) sludge. Kd values ranged from ...

AIMS To quantify the incremental exposure of root crops, at point of harvest, to enteric pathogens from sewage sludge applied to agricultural land according to current regulations and guidance (Safe Sludge Matrix). METHODS AND RESULTS A quantitative risk assessment based on the Source-Pathway-Receptor approach is developed for Cryptosporidium and salmonellas. Event trees are constructed to mo...

Recent research has indicated the advantages of combining anaerobic and aerobic processes for the treatment of municipal wastewater, especially for warm-climate countries. Although this configuration is seen as an economical alternative, is has not been investigated in sufficient detail on a worldwide basis. This work presents the results of the monitoring of a pilot-scale plant comprising of a...

The fermentation characteristics of activated biomass from two types of sludge, namely primary sludge (PS) and excess sludge (ES) were compared under three pH conditions (uncontrolled, 4, 10) over a period of 8 days. Results show the highest production of short-chain fatty acids (SCFAs) in PS and ES of 352 ± 7 and 324 ± 13 mg COD/g VSS, respectively at pH 10, on the 2 day in PS fermentation, an...

Screening by gas chromatography with flame ionization detection and gas chromatography-mass spectrometry has been carried out on sludge extracts of wastewater treatment basins. Soxhlet extraction with trichlorotrifluoroethane was applied. The yields for petroleum hydrocarbons and PAH recovery were high, usually in excess of 90%. The proposed investigations permit a quick assessment of petroleum...