The microstructure and mineralogy of lightweight aggregates manufactured with washing aggregate sludge, sewage sludge and a clay-rich sediment have been studied.
The co-combustion of sludge (sewage and dredged sludge) with rice husk is expected to become a trend because of its economic and environmental benefits.
In 1976, the activated sludge sewage treatment plant in Edmonton, Canada, was surveyed to determine the numbers of culturable airborne microorganisms.
Recently, it has received great attention, specially, in the fields of fine-particle sludge, gelatinous sludge, sewage sludge, pharmaceutical industries, food waste and bull kelp, which could not be successfully dewatered with conventional mechanical methods.
For the last three years he has been the host of "Dirty Jobs," the gross-out cable hit on the Discovery Channel, a gig that has exposed him to untold tons of sludge, sewage, mud, manure, detritus, excreta, road kill and plain old nastiness.
In this study, marble sludge, sewage sludge, drinking water treatment plant sludge, and basic oxygen furnace sludge were used as replacements for limestone, sand, clay, and iron slag, respectively, as the raw materials for the production of cement in order to produce eco-cement.
Sewage sludge and sewage sludge ash for the HK Kalke experiment were obtained from a municipal treatment plant in Bonn, processing wastewater mainly from households and from an attached sewage sludge incineration plant.
The RQ value determined by Sawyer and Nichols (1939) falls between the limits of 0.51 and 1.18 for activated sludge-sewage mixture which is quite similar to municipal effluent in nature and the current finding (i.e. 0.55) also lies within the range.
Sludge, in sewage treatment, solid matter that has settled out of suspension in sewage undergoing sedimentation in tanks or basins.
Sewage sludge is the predominant sewage fertiliser product available today, but the use of sewage sludge in agriculture has been questioned as regards hazardous substances.
Sewage sludge, Thomas phosphate and sewage sludge-enriched BOF slag (LDS/SSA) all resulted in levels of available P similar to or higher than TSP.
