The Ultimate UPFLOW SOLIDS CONTACT （最终上升气流固体接触）.pdf

THE MC CLARIFLOW The Ultimate UPFLOW SOLIDS CONTACT CLARIFIER by Arthur C. Schlicht November 1999 Walker Process Equipment Division of McNish Corporation 840 North Russell Avenue Aurora, IL 60506-2853 PHONE: (630) 892-7921 FAX: (630) 892-7951 THE MC CLARIFLOW THE ULTIMATE UPFLOW SOLIDS CONTACT CLARIFIER HISTORICAL Since the late 1930s, upflow solids contact clarifiers have been in use, supplanting traditional separate-basin rapid mix, flocculation and settling basins with a single vessel capable of performing all of these functions. Walker Process Equipment has produced upflow solids contact clarifiers in various forms since the early 1950s, with units such as the HC ClariFlow and the Mark II ClariFlow, both of which have been successfully used for municipal turbidity removal and softening applications, and many industrial waste streams. Over 600 ClariFlow units have been supplied over the years, capable of treating in excess of 2 billion gallons per day. Both the HC and Mark II units are configured such that the internal slurry recycle pump draft tube(s), offset from the basin centerline, stops at an elevation that limits maximum recycle of solids, in order to clear the rotating scraper arm. Consequently, these units disqualify with fully complying with specifications that demand 4% solids concentrations within the mixing zone. Therefore, the MC ClariFlow was developed to answer these requirements. The MC ClariFlow utilizes a slurry recycle pump within the center pier, w