Sludge treatment apparatus

摘要

A sludge treatment multi-stage process and apparatus thereof for sludge concentration and liquid stream treatment which includes chemical feeding, static mixing, chemical monitoring and optimization, built-in gas pressurization, hydraulic flocculation, grit settling, multiple stage upward flotation thickening, downward gravity thickening, and final magnetic or electrical treatment to produce a highly concentrated sludge slurry and a treated effluent. A majority of floated, settled and thickened sludges are collected by a travelling combined scooping-scraping means and subsequently dewatered and dried and all necessary unit processes and unit operations are incorporated into an apparatus with common walls and drive mechanisms for improving the sludge and water treatment efficiency, reducing secondary pollution caused by scums/sludges, and eliminating the needs of a separate mixer, monitor, flocculator, pressure vessel, flotation thickening clarifier, gravity thickening clarifier, aerator, biofouling preventor, scale controller, corrosion controller, and multiple apparatus for various modes of operations.