Ballasted flocculation units function through the addition of a coagulant, such as ferric sulfate; an anionic polymer; and a ballast material such as microsand, a microcarrier, or chemically enhanced sludge. When coupled with chemical addition, this ...
Ballasted flocculation represents a relatively new technology that shows promise of bringing improvements to the field of water and wastewater treatment. Ballasted flocculation involves the addition of a ballasting agent (high-density microsand, sp gr = 2.65) to a chemically stabilized and coagulated ...
Ballasted flocculation of activated sludgeBallasted flocculation of activated sludgeActivated sludge ballasting process comprises: mixing a powdered mineral substance with the biomass (5) to form a mixed floc of density higher than the origin floc, where the mineral substance is in the form of rhomboid...
The invention concerns a water treatment method which consists in introducing coagulated water in a flocculation zone, to enable flocculation of microflocs in the presence and around a ballast; introducing the mixture in a decantation zone; separating the treated water in overflow and a mixture of ...
美[ˈbæləst] 英['bæləst] n.【电】镇流电阻;压舱物;(轻气球的)沙囊;【铁路】道碴 v.在…上装压舱物[沙囊];为(铁路等)铺道碴;使稳定 网络有压载的 复数:ballasts过去分词:ballasted现在分词:ballasting 同义词 n. weight,bulk,makeweight,stabilizer,balance ...
In previous ballasted flocculation (BF) studies, researchers adopted CD = 24/Re, which is a generalized equation and is limited to spherical objects in laminar regime. However, because of the non-spherical shape, hybrid floc structure having porous and solid proportions, and the non-laminar ...
Ballasted flocculation, consisting of injecting micron-sized granular media to increase the specific gravity (SG) and size of flocs, is being used increasingly in the water industry owing to its potential for achieving very high superficial design velocities (as high as 85 m/h; MDDEP (2009)...
A pilot-scale ballasted flocculation system was used to remove fluoride from one type of industrial wastewater. The system included the formation of calcium fluoride (CaF2) using calcium hydroxide followed by coagulation sedimentation. Calcium fluoride was recycled as nuclei for enhancing CaF2 precipitatio...
Method of treating water and wastewater with a ballasted flocculation process and a chemical precipitation process The present invention is directed to a method and apparatus for the treatment of water and wastewater. In one embodiment, a method of treating water according to the present invention in...
EP1785400 May, 2007 Ballasted flocculation of activated sludge EP1866255 December, 2007 METHOD AND SYSTEM FOR UTILIZING ACTIVATED SLUDGE IN A BALLASTED FLOCCULATION PROCESS TO REMOVE BOD AND SUSPENDED SOLIDS EP1973853 October, 2008 WASTEWATER TREATMENT USING ACTIVATED SLUDGE AND BALLASTED FLOCCULATION EP21...