Study few of parameters of sludge resulting from wastewater treatment by moving bed bioreactor (MBBR)

Abstract

The treatment plant does not fulfill its purpose fully unless the sludge resulting from wastewater treatment is treated to the extent that allows for

environmentally safe disposal. The nature and properties of sludge and the method of treatment are directly related to the treatment processes that wastewater undergoes, which led to the formation of sludge.

Accurate determination of these sludge properties helps in designing the secondary sedimentation basin well and forms the basis for designing sludge treatment units in each wastewater treatment plant, despite the importance of studying the sludge properties resulting from treatment using the MBBR method, the available information is still sparse And a few.

This study deals with the description of the properties of sludge resulting from treatment by the MBBR method. A pilot MBBR plant was commissioned and polyurethane sponge cubes were used as a biological carrier with a filling percentage of 10% and a hydraulic residence time of 14h, the parameters that were used to determine the properties of sludge in the pilot plant are sludge retention time, sludge volume index, sludge production, sludge stability, sludge dewatering property. The study showed that the MBBR sludge has good sedimentation properties and low sludge production, and the long sludge retention time leads to the biological stability of the resulting sludge, the drying ability of the sludge generated by the MBBR plant is low due to the aerobic digestion obtained.