CLARIFIERS / THICKENERS - HYDROSILT®
The Hydrosilt® Clarifiers/Thickeners are used for the treatment of effluents from run-off and waste water generated in the washing process of mineral ores, as well as sands and aggregates used by various industries. Sludge, clay and fine particles, aided by the addition of a chemical reagent (flocculant)to precipitate settlement, are filtered through a fluidized bed of solid sediments drawn to the bottom by a rake mechanism and subsequently pumped out of the tank. The clarified water is discharged through the tank overflow launder.
The feed slurry is pumped to an auxiliary tank adjacent to the Hydrosilt® Clarifier/Thickener where air is removed and the necessary chemical reagent (flocculant) is added to expedite sedimentation. The feed slurry/flocculant mix is then introduced into the bottom of the tank through a fluidized bed created by the settling solids and the clarifying area. This ensures contact between the solid particles and the chemical retained in the bed, intensifying the effect of the reagent. The effluent is driven upward through the fluidized bed to the top of the tank, where the clarified water is evacuated through a peripheral overflow launder.
The solid-liquid “interface” formed in the lower part of the tank is determined as a separation line between the fluidized bed and the clarified water, which is automatically detected and monitored by a number of sensors. A rake system mechanism located at the bottom of the tank guides the settled sludge into a central discharge funnel, from where it is pumped out of the tank. The frequency and concentration of the discharge is continuously controlled by means of a load detector that controls the slurry pumping system.
EFFECTIVE CLARIFICATION AND THICKENING
The highly effective solid-liquid separation provided by Hydrosilt® Clarifiers/Thickeners is particularly well suited to treating the effluents, runoff and waste water generated by the aggregate, mining, construction, chemical and environmental industries, among others.
The optimal results delivered by Hydrosilt ® Clarifiers/Thickeners, at rates from three to twenty times faster than in conventional tanks, translate into enormous advantages for operators, including a greater settling area for clarifier size, better clarification conditions, higher concentration of solids during discharge, efficient and automatic process control and
lower investment costs. AMP highly qualified technical team has the necessary expertise and material resources to conduct any necessary laboratory or pilot plant testing to ensure the proper sizing of Hydrosilt ® Clarifiers/Thickeners as well as the choice of the appropriate flocculant.
FILTRATION OF SLUDGE
When the thickened sludge needs to be processed for subsequent handling as a solid or for reasons of environmental control, AMP has a comprehensive range of filter presses available for optimum separation of liquid/solids and maximum water recovery. Our technical team will match the ideal solution to the application, based on a thorough study of operational requirements, and the characteristics of the material.