In wastewater treatment and sludge dewatering, usually we are required to prepare and dose flocculant and coagulant solution into water and slurry by a certain proportion for flocculation reaction and sludge thickening. Wastewater treatment process and dosing operation are both continuous, thus requiring a multi-functional dosing system which can prepare and dose chemical solution continuously in preset certain concentration. Series ZRY is a full automatic chemical preparation and dosing machine, can control both the water feeding flow rate and powder feeding quantity, to ensure your expected chemical concentration.

This automatic chemical dosing machine is designed to prepare liquid flocculant solution by using water and powder chemicals, for example to prepare and dose PAM solution. The operator only need to add flocculant or coagulant into the feeding hopper, then the subsequent process will be automatic.

The flocculant or coagulant is firstly sent into pre-mixer by a built-in mini screw conveyor to pre-mix with water. The chemical feeding quantity is precisely controlled through the rotation number of the screw. Then pre-mixed powder is delivered to "Chemical Preparation Chamber" and is diluted and mixed there in required concentration.

Diluted solution then enters into "Chemical Digestion Chamber" for digestion. After digestion, the prepared chemical solution is ready to use and is finally stored in "Ready Solution Storage Chamber". Using a dosing pump to delivery the ready chemical solution to dosing point in preset flow rate".

The above mentioned three chambers are all equipped with multi-propeller agitators to guarantee the dilution and digestion performance. Different chambers are separated from each other to avoid any direct access, thus ensuring the best reaction time and a constant concentration in each chamber.

Automatic control system is connected with liquid level controller in "Ready Solution Storage Tank". When liquid level exceed limited height, preparation process will stop automatically, and when liquid level go down back to pre-set height, preparing process will automatically start again.