Performance of a rotating biological contactor (RBC) in treating municipal wastewater from primary sedimentation basin and anaerobically treated industrial effluent from an upflow anaerobic sludge blanket (UASB) reactor was investigated. The 280-L six-stage RBC pilot was operated at different organic loading rates and biodisc speeds. The overall removal efficiencies of soluble BOD decreased wit...

Excess sludge reduction has been a research hotspot for long time. Ultrasonic treatment of excess was an efficient and green pretreatment method, also can be combined with the addition oxidants. To improve effect ultrasound on destruction, hydrogen peroxide (H2O2) added to examine results in current study. The effects ultrasound/hydrogen system release organic matter during destruction process ...

The amount of waste activated sludge (WAS) is increasing annually, and since it presents potential environmental health-related risks, an appropriate treatment stabilization process needed. It has been shown in numerous studies the past few decades that amongst advanced methods sludge, microwave ultrasound-based processes offer promising effective alternatives. main advantage these physical the...

In a two-phase anaerobic digestion process, enhanced biogas production and organic pollutant removal depend on the stability performance of hydrolytic–acidogenic methanogenic phases. Additionally, phase is rate-limiting step, which calls for further optimization operating parameters. The objective this study was to optimize parameters reactor (HR) in treating slaughterhouse wastewater. experime...

The goal of this study was to evaluate the biodegradation 1,4–dioxane using a mixed biological culture grown in textile wastewater sludge with as sole carbon source. conditions for long-term evaluation degradation were determined and optimized by batch scale analysis. Moreover, Monod’s model used determine biomass decay rate unknown parameters. soluble chemical oxygen demand (sCOD) concentratio...

Considering characteristics of breaking down H(2)O(2) into water and molecular oxygen by catalase in waste activated sludge (WAS), the effect of H(2)O(2) dosing strategy on sludge pretreatment by the advanced oxidation process (AOP) of microwave-H(2)O(2) was investigated by batch experiments for optimizing H(2)O(2) dosage. Results showed that the catalase in sludge was active at the low tempera...

The objectives of the study were to measure the levels of manure nutrients retained in psychrophilic anaerobic sequencing batch reactors (PASBRs) digesting swine manure, and to determine the distribution of nutrients in the sludge and supernatant zones of settled bioreactor effluent. Anaerobic digestion reduced the total solids (TS) concentration and the soluble chemical oxygen demand (SCOD) of...

background: amoxicillin is widely used as an antibiotic in the modern medicine. due to its chemical structure, polarity, activity level, antibiotic specifications, and environmental sustainability, amoxicillin leaks into the groundwater, surface waters, and drinking water wells. many physical and chemical methods have been suggested for removing amoxicillin from aquatic environments. however, t...