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Aslan - Model ASL- DFC -Dry Polymer Feeders
The Dual Function Continuous (DFC) and DFC-Mini series provide continuous feeds of aged polymers or chemicals, eliminating the need for age tanks and their associated mixers. The DFC series incorporates more traditional types of batch make-down systems where a volumetric feeder is engineered to combine the two basic stages of polymer make-down into a single machine. The DFC Series is the complete answer to dry polymer make-down with neat liquid feed backup. A completely aged and activated solution can be prepared with either a DRY or NEAT LIQUID polymer source.
Our systems are designed to run unattended between bulk fillings of the hopper. The liquid polymer backup can be used to feed a biocide or antifoaming agent into the make-down process.
The system is set up with a medium to high concentration of polymer, which allows for a greater holdup of aging product. As a result, our design saves floor space, as less water is stored.
The process starts by metering a precise amount of powdered DRY or NEAT liquid product into the high velocity water layer of the primary wetting stage. The solution is then positively circulated through directed pathways and orifice plates using 3 to 5 separate mixing chambers.
The use of powerful low-shear mixers and the reduction of the mixing action imposed during each stage allows the DFC feeder to achieve maximum product activation without damage to the polymer chains.
The final stage accurately meters water into the final storage chamber (Secondary Dilution Tank) with a gentle mixing action to prepare the final solution to the dilution best suited to the process.