Oxidative treatment of waste activated sludge by different activated persulfate systems for enhancing sludge dewaterability

Textile wastewater treatment: aerobic granular sludge vs activated sludge systems.

Textile effluents are characterised by high content of recalcitrant compounds and are often discharged (together with municipal wastewater to increase their treatability) into centralized wastewater treatment plants with a complex treatment scheme. This paper reports the results achieved adopting a granular sludge system (sequencing batch biofilter granular reactor - SBBGR) to treat mixed munic...

Improvement in settleability and dewaterability of waste activated sludge by solar photocatalytic treatment in Ag/TiO2-coated glass tubular reactor.

In this study, photocatalysis was used to improve the dewaterability and settleability of waste activated sludge (WAS) by a solar photocatalytic reactor with transparent Ag/TiO2 film as photocatalyst. Specific resistance of filtration (SRF) and sludge volume index (SVI) were used to evaluate WAS dewaterability and settleability, respectively, and the mechanism of photocatalysis was interpreted ...

Ammonia Wastewater Treatment by Immobilized Activated Sludge

Experimental Comparison of Two Modifications of Activated Sludge for Treatment of Furfural-Containing Wastewater

 A case study is presented in which two modifications of activated sludge treatment of complex chemical wastewater are experimentally compared: a combination of common activated sludge with powdered activated carbon treatment (PACT), and bioaugmentation of activated sludge treatment (BAST). Industrial wastewater of Pars Oil Refinery that was passed through an oil recovery stage was used to inve...

Simulation and assessment of sludge concentration and rheology in the process of waste activated sludge treatment.

The process of using flat-sheet membrane for simultaneous sludge thickening and digestion (MSTD) was employed. The variations of sludge concentration and rheology were characterized and simulated. Based on mass balance analysis, mathematical models were developed and successfully used to predict and evaluate the variations of sludge concentration and the digestion efficiency in the MSTD process...