In fact, filter presses produce excellent cake dryness and, in many cases, higher cake dryness compared to other filtration equipment. What is “silt”?Simply put, “sludge” is a semi-solid slurry that can be produced from a variety of industrial and municipal processes.The purpose of sludge dewatering is to reliably and efficiently concentrate waste into a filter…
Biosolids are the concentrated, stabilised solids product generated from the treatment of sewage sludge. During wastewater treatment, the liquids are separated from the solids. Those solids are then treated physically and chemically to produce a semisolid, nutrient-rich product known as ‘biosolids’. The terms ‘biosolids’ and ‘sewage sludge’ are often used interchangeably. However, biosolids are usually considered to…
Overview of sludge processingSludge is the main waste stream generated from water purification, both water for drinking and wastewater for environmental discharge. It requires processing to reduce: i. its volume, and so the cost of subsequent haulage and disposal,ii. the risk it poses to public health, primarily from the pathogenic micro-organism content,iii. its odour,iv. its…
Overview of sludge characteristics Sludge characteristics depend on both the original feedwater quality and the type of the unit operation from which the sludge is discharged. For conventional municipal wastewater treatment, the two main sludge streams are: from the primary sedimentation stage, producing primary sludge, and the secondary biological treatment stage, producing waste activated sludge (WAS) if the biological…