Ultrasonic enhancement of industrial sludge settling ability and dewatering ability

Monitoring of activated sludge settling ability through image analysis: validation on full-scale wastewater treatment plants.

In recent years, a great deal of attention has been focused on the research of activated sludge processes, where the solid-liquid separation phase is frequently considered of critical importance, due to the different problems that severely affect the compaction and the settling of the sludge. Bearing that in mind, in this work, image analysis routines were developed in Matlab environment, allow...

Effects of sludge retention time on oxic-settling-anoxic process performance: Biosolids reduction and dewatering properties.

In this study, the effect of sludge retention time (SRT) on oxic-settling-anoxic (OSA) process was determined using a sequencing batch reactor (SBR) attached to external aerobic/anoxic reactors. The SRT of the external reactors was varied from 10 to 40d. Increasing SRT from 10 to 20d enhanced volatile solids destruction in the external anoxic reactor as evidenced by the release of nutrients, ho...

the effect of audio-taped feedback and conferencing on efl students’ writing ability

: بازخورد یکی از جنبه ها ی ضروری هر دوره ی آموزشی نگارشی – زبانی انگلیسی می باشد که به زبان آموزان مهارت های مورد نیاز جهت بهبود توانایی نگارشی را می آموزد. این تحقیق، با استفاده از طرح پیش آزمون، پس آزمون، و پسا آزمون ، سعی دارد تا تأ?یر نوع بازخورد مدرس در کمک به زبان آموزان جهت بازنویسی نوشته هایشان رابررسی کند ، و آیا اینکه رابطه ای بین نوع بازخورد مدرس و توانایی زبان آموزان در تصحیح غلط ها...

Section Vi Review of Sludge Dewatering Techniques Vi-1 Section Vi Review of Sludge Dewatering Techniques

Sludge Dewatering by Impulse Drying

An innovative and energy efficient sludge dewatering technology has been developed. The technology, impulse drying, involves briefly contacting the sludge under pressure with a heated surface. A unique feature of impulse drying is that the majority of moisture removal occurs as lipid water. A pilotand laboratory-scale demonstration was performed on low ash primary paper mill sludge. The pilot-s...