1. INFILCO ACCELATOR® Clariﬁer / Softener HIGH SOLIDS CLARIFICATION SOFTENING Applications QUALITY CONTACT - Clarification Applications - Softening - Color Removal - Tertiary Wastewater - Industrial Metals Removal A recognized leader in its class, Infilco Degremont’s Accelator® Clarifier is a high-rate treatment plant in a single basin that employs the principle of internal slurry recirculation. MAIN FEATURES Highest Quality Softening Clarifier Pioneer of Solids Contact Clarifiers on the Market Industry Leader - Thousands of Installations Internal Recirculation of Sludge Dynamic Separation of Solids Highly Efficient Use of ChemicalsSEPARATIONS TECHNOLOGY : ACCELATOR® CLARIFIER/SOFTENERThe Accelator® Clarifier provides high-rate capacity in less than The key principle behind Accelator’s operation is its low-shearhalf the space of conventional sedimentation utilizing the principle rotor-impeller combination, which controls mixing and slurryof internal slurry recirculation to accelerate chemical reactions and recirculation at independent rates to handle rapid changes indense particle growth. Mixing and reaction, return flow, and sludge water characteristics. The Accelator employs dynamic separationremoval functions are performed in a single-basin unit that requires of slurry from clarified water allowing increased loading ratesless than half the volume of conventional multi-tank systems. versus competing technologies.
2. Accelator® accelator’s four - zone treatment process The process begins with the raw water entering through the downward and back under the hood structure to the primary influent pipe into the primary mixing and reaction zone where mixing and reaction zone by the suction produced by the it is mixed with the previously formed slurry and treatment impeller. chemicals. 3 DYNAMIC SEPARATION: 1 ROTOR-IMPELLER: Recirculation of the slurry is independent of the flow rate. The rotor-impeller provides controlled velocity mixing of the This unique feature allows rapid changes in flow rate to be raw water and chemicals in the presence of a large volume of handled. This feature of directed flow and dynamic separation slurry in the primary mixing and reaction zone. The combination of the treated water from a downward moving mass of slurry of returned slurry flow and rotor mixing prevents solids from characterizes the Accelator® operation. settling on the floor of the basin. Precipitation takes place in the presence of previously formed precipitates, resulting in dense 4 INTERNAL SLUDGE CONCENTRATORS: particle growth. The independently adjustable rotor-impeller To provide the best operation, concentration of solids in the circulates two to four times the design flow from the primary recirculating slurry is kept at the optimum value for each mixing and reaction zone to the secondary mixing zone where treatment process. As the recirculating slurry volume increases, continued slurry contact allows the treatment reactions to the excess is collected in the sludge concentrators. The sludge approach equilibrium. in the concentrators is thickened and periodically drawn off. A sludge blowdown valve is provided for each concentrator and 2 INTERNAL RECIRCULATION: operates on a controlled time cycle. The sludge blowdown When the slurry leaves the secondary mixing and reaction zone, frequency depends on the amount of sludge being produced it is discharged downward between the inner and outer draft and can easily be adjusted to accommodate changes in flow or tubes in controlled motion, outward along the sloping hood and influent water conditions. onto the surface of the slurry pool, where the treated water is displaced upward and collected in launders. The slurry is drawn 2 3 4 2 1 Draft Tubes Secondary Mixing And Reaction Zone Collection and Effluent Launders Sludge Concentrators Rotor Impeller Influent Sludge Discharge Hood Primary Mixing And Reaction Zone
3. Raw water source Accelator® Dual media filters UV or Cl2 disinfectionDRINKING WATER - Lime softening or clarification Secondary Secondary Accelator® Dual media filters UV or Cl2 treatment clarification disinfectionTERTIARY TREATMENT (PO4 removal and clarification) PERFORMANCE ADVANTAGES DESIGN specifications• uperior Effluent Quality. S Single Unit Capacity Accelator’s uniform slurry concentration produces consistent, Accelator® 1.0 - 3.0 gpm/ft2 high-quality effluent that’s less susceptible to upsets in the plant. Treated water turbidity is normally between 1 - 3 NTU. NS Model 0.5 to 15 MGD• fficient Operation. E IS Model 0.5 to 40 MGD The independently adjustable rotor-impeller lets you customize the unit for site-specific conditions. Only one gear reducer and motor is required to achieve dual functions.• ynamic Separation. D Solids are recirculated in and out of the hood mechanism, resulting in a point of dynamic separation, where the slurry is moving downward and the clarified water is displaced upward. This yields higher loading rates and units are less prone to upsets from flow variation versus competing “sludge blanket” type solids contact units. DESIGN OPTIONS• NS” Accelator Model: “ The first solids contact clarifier on the market, the “NS” (no bottom scraper) maintains active slurry volume throughout the Technical Features treatment zones. The economical choice for small to medium size oading Rates: 1.0 to 3.0 gpm/ft2 L applications, the “NS” Accelator® allows for waste sludge removal without the use of bottom scrapers. Start-up and shutdown within minutes• IS” Accelator Model: “ R etrofit existing sedimentation basins The “IS” (Internal Scraper) model incorporates sludge scrapers and bottom sumps to accommodate large amounts of waste Round or square configurations available sludge.The scraper drive assembly operates above the water level with no underwater bearings. The “IS” type is generally suited for Steel tank or concrete units available specialty applications or very large diameter units. Highly efficient use of chemicals• ackage Systems - Accelapak®: P The Accelator system is available in steel package units with N S (no scraper) and IS (internal scraper) models or without a package gravity filter. Unit sizes are available from 50 to 350 gpm.