The Polyblend® DP800 system is a reliable dry polymer feed system for use in water and wastewater applications. The
DP800 is an integrated equipment package capable of automatically preparing a homogeneous polymer solution.
The DP800 consists of the DD4 dry polymer disperser, a stainless steel mix tank, and a gravity fed stainless steel hold tank.
The DP800 is specifically designed to provide uniform mixing. Dry polymer and water are initially mixed in the DD4 polymer disperser exposing the solution to a high shear agitation via mechanical mixing. The high shear agitation ensures proper activation of the polymer and prevents unwanted agglomerations. After brief exposure, the solution exits the high shear mixer and ows into the mix tank.
The second stage mix is a longer, low shear mix. The rotating impeller in the secondary mix tank is a U.S. patented “hollow-wing” design and covers over half the width of the tank. The low shear mixing continuously and uniformly moves the solution vertically and horizontally resulting in no agglomerations or broken polymer chains.
When a low level is sensed in the hold tank, a valve is automatically opened and the prepared solution is gravity fed into the holding tank. From the holding tank, the homogenous polymer solution can be transferred to the process with an optional feed pump skid.
The DP800 is controlled through an easy-to-use microprocessor-based operator interface. The LCD display enables complete operation of all functions including dosage rates, solution concentration, and alarm conditions.
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