Abstract: Most rapid infiltration systems (RI) operate as batch processes. This observation is the basis of a new approach to sizing RI systems. The long‐term intake capacity per cycle is the critical design parameter needed in this ...

Abstract: A new unit operation called a sludge freezing bed is proposed for dewatering sludges produced by treatment facilities in cold regions. This unit operation uses natural freeze‐thaw to condition the sludge for dewatering. ...

Abstract: A sludge‐freezing bed is a new unit operation for dewatering sludges produced by water and wastewater treatment plants in cold regions. Sludge is applied to the bed in layers, where it is allowed to freeze naturally during ...

Abstract: When sludge is allowed to freeze slowly and then thaw, its dewatering properties are usually greatly improved. The mechanisms by which this improvement occurs are not well understood. This paper proposes a conceptual model ...

Abstract: Particle size has opposing effects on the effectiveness of freeze/thaw sludge conditioning. Small particles migrate easily and coagulate into larger particles during freezing, but small particles also cause poor sludge ...