POLYELECTROLYTE PREPARATION AND DOSING STATION FOR SLUDGE DEWATERINGWe manufacture polyelectrolyte preparation and dosing stations with tanks of 600 or 1000 litres and dosing pumps with capacities of 125, 200 and 300 l/h. The tank is manufactured from HDPE (PE-HD) or acid-resistant stainless steel, while components in contact with the medium, including the agitator and the dosing pump suction pipe, are made of AISI 304 stainless steel.
We select the station individually according to the parameters of the installation. The dosing pump provides continuous flow adjustment within the range of 10 to 100%, while the prepared polyelectrolyte solution has a concentration of 0.1–0.3%. The amount of solution injected into the pipeline is selected according to the sludge pump capacity and should correspond to 7–12% of its capacity.
We manufacture polyelectrolyte preparation stations as complete units for the preparation, mixing and controlled dosing of polymer solution. The equipment can operate, among other applications, with sludge dewatering installations where repeatable preparation of the required polymer concentration and precise dosing into the process pipeline are essential.
We adapt the design and operating parameters of the station to the quantity and type of medium and to the requirements of the specific installation. We offer electrically driven versions as well as the option of a pneumatically driven system.
We manufacture the station tank from HDPE (PE-HD) or acid-resistant stainless steel and mount it on a dedicated platform. Depending on the version, the station can be equipped with:
In the pneumatically driven version, the system also includes a pressure reducer, air regulator and compressor. These pneumatic components are not used in the version with an electrically driven dosing pump.
| Parameter | Value / range |
|---|---|
| Tank capacity | 600 or 1000 l |
| Dosing pump capacity | 125, 200 or 300 l/h |
| Dosing pump adjustment range | 10–100% |
| Prepared polyelectrolyte concentration | 0.1–0.3% |
| Dosing rate relative to sludge pump capacity | 7–12% |
| Tank material | HDPE (PE-HD) or acid-resistant stainless steel |
| Agitator and suction pipe | AISI 304 stainless steel |
A measured quantity of powdered polyelectrolyte is added to the eductor hopper. The water stream used to fill the tank draws the polymer into the system and introduces it into the make-up tank, where the solution is mixed and allowed to mature.
The liquid level is monitored by probes. When the maximum level Vmax is reached, the water supply is automatically shut off. Once the solution preparation process has been completed, the station is ready for dosing.
Starting the filtration process activates the dosing pump, which injects a specified quantity of polyelectrolyte solution into the pipeline. We adjust the dosage according to the process parameters and the capacity of the sludge pump.
We use plunger dosing pumps that allow manual, continuous flow adjustment within the range of 10 to 100%. The flow rate can be adjusted both while the pump is operating and when it is stopped.
In stations with an electrically driven dosing pump, a powdered polymer dosing unit or an emulsion concentrate pump can be used. We select the solution according to the type of polyelectrolyte used and the technological requirements of the installation.
We select the technical parameters and size of the station individually according to the quantity and type of medium supplied. We design the equipment to meet the requirements of the specific process, allowing us to adapt, among other parameters, the tank capacity, pump capacity, solution preparation method and drive configuration.
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