As a byproduct of sewage treatment plants, sludge presents dual characteristics “resource” and “pollution”. While it enriches nutrients from wastewater, also contains portion toxic substances. Moreover, when the organic matter content is low, affects efficiency resource utilization energy recovery (sludge digestion efficiency, consumption incineration systems). Developing new physicochemical-bi...

In recent years, sewage sludge (SS) and bio-waste management have attracted increasing environmental attention. this study, hydrothermal carbonization (HTC) technology is investigated in the framework of a co-treatment digestate (SSD) an organic fraction municipal solid waste (OW). The proposed configuration integrates HTC with anaerobic digestion (AD) inter-stage (AD1 + AD2). effects different...

Sludge dewatering can effectively reduce the volume and mass of sludge for subsequent treatment and disposal. The work validated the potential of Fenton's reagent combined with dodecyl dimethyl benzyl ammonium chloride (DDBAC) in improving sludge dewaterability and proposed the mechanism of joint conditioning. The composite conditioner dosage was optimized using response surface methodology. Re...

Biomethanation and dewaterability characteristics of primary sludge (PS), secondary (SS) mixed (MS) fractions were assessed after anaerobic stabilization under parallel batch continuous mixing conditions at 35℃ in order to investigate the performance separate digestion system. Similar methane conversion/yield values obtained PS, SS MS with mixing’s positive effect only PS digestion. Continuous ...

The effect of adsorbed and soluble carboxymethyl cellulose (CMC) on dispersing, dewaterability, and fines retention of pulp fibre suspensions was investigated. CMC was added to a suspension in the presence of electrolytes, causing its adsorption to the fibre surfaces, or to a suspension without electrolytes, so that it stayed in the liquid phase. Both the CMC adsorbed on fibre surfaces and that...

Processing of the produced primary and secondary sludge during sewage treatment is demanding requires considerable resources. Most common practices suggest cotreatment starting with thickening anaerobic digestion. The aim this study to investigate digestion only estimate its impact on energy recovery. Within context, performance explored focused further enhance methane production by using addit...