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Polymer stations
Polymer stations
Polymer stations are specialized equipment for preparation, dosing and feeding of polymer reagents (flocculants), which are used in wastewater treatment and sludge dewatering processes.
The main task of such stations is increasing the efficiency of sedimentation and condensation of contaminants, which allows to significantly improve the operation of sedimentation tanks, flotation tanks and dehydrators.
In the process of wastewater treatment, small particles (colloids, organics) do not settle on their own. To remove them, polymers are used that:
- combine small particles into larger flakes (floccules);
- accelerate deposition;
- improve sludge dewatering;
- reduce the load on other equipment.
Without polymer stations, the efficiency of many purification stages is significantly reduced.
The operation of the polymer station consists of several stages:
- Dry or liquid polymer feed
The reagent is fed into the mixing tank. - Solution preparation
The polymer is mixed with water to the required concentration. - Exposure (activation)
The solution is aged to fully reveal the properties of the polymer. - Dosage
The finished solution is fed by dosing pumps into the technological process (for example, before a flotation device or dehydrator).
Main elements of the station
A typical polymer station includes:
- hopper or container for polymer;
- feed system (auger or pump);
- mixing tanks (1–3 chambers);
- mixers;
- dosing pumps;
- automatic control system.
Many modern stations operate in fully automatic mode, which minimizes operator involvement.
Types of polymer stations
1. For powder polymers
- dry reagents are used;
- require precise dosing and mixing;
the most common option.
2. For liquid polymers
- easier to operate;
the solution is prepared faster; - often used on small objects.
3. Compact (modular)
- take up little space;
suitable for small - treatment facilities;
Benefits of using
- Increasing cleaning efficiency;
- Reduction of reagent costs;
- Process automation;
- Stable cleaning quality;
- Optimization of equipment operation (flotators, sedimentation tanks, dehydrators).
Features of operation
For the effective operation of the polymer station, it is necessary:
- correctly select the type of polymer;
- control the concentration of the solution;
- clean equipment regularly;
- check the operation of pumps and mixers;
- observe the storage conditions of reagents.
Incorrect dosage may lead to overconsumption of reagents or reduced cleaning efficiency.
Polymer stations are used:
- at municipal wastewater treatment plants;
- in the food industry;
- at chemical industry enterprises;
- in the pulp and paper industry;
- in water treatment systems.
Polymer stations are a key element of modern treatment facilities. They ensure efficient use of reagents and significantly improve the quality of wastewater treatment and sludge dewatering. Thanks to automation and dosing accuracy, such systems allow to optimize costs and ensure stable operation of the entire treatment complex.
