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VOR - Model PMU Series -Auto Polymer Make-up Unit
Flocculation is an essential stage in the treatment of sludge coming from municipal or industrial wastewater treatment plants. In these processes polymeric flocculating agents are used to enhance the treatability of the sludge. Flocculants, with their very high molecular weights(long chains of monomers) and their varied ionic charge, mixed with water and fix the destabilized particles on their chain. Therefore the particle size in the aqueous phase will increase throughout the flocculation step with the formation of floes. The formation of floes induces a release of the water. This water will thus be easily eliminated during the thickening and dewatering step. Flocculants are also used for other industrial solid-liquid separation applications, such as in chemical industries, petrochemical plants, pulp and paw plants, food industries and others.
With many years of successful experience in water and wastewater treatment industries, VOR has developed PMU series polymer make-up and dosing units which adapted to the above mentioned processes. PMU contributes to the continuous and automatic preparation process, easy operation, convenient maintenance, thus the great reduction of labor cost.
Major Components
Easily Adjustable Polymer Feeder
Consists of a hopper and a variable-frequency controlled metering screw. The outlet feeder is heated electrically to avoid humidity. Mixing cone is a vital component consists of an ejector, which effectively mixes and delivers the water polymer mixture into the preparation chamber.
Automatic Water Supply Device
Consists of shut-off valve, magnetic valve, pressure switch and float type flow meter. Easily adjust the feed water into the chamber, thus allowing to control the concentration of the solution.
Three Different Function Chambers
The preparation chamber is equipped with a mixer, the maturation chamber is equipped with a agitator and storing/dosing chamber is equipped with a mixer and level sensor. Optional mixing and aging time, properly designed gentle mixing and agitating devices provide the necessary conditions to maximize of long chain polymer molecules. These well engineered stages do not only allow maximum usage of polymer concentrate but also reduce operating cost.
- The standard plant is designed for dry polymers, to handle liquid type polymers is optional.
- Liquid solubility can be easily adjusted according to the actual demandCgenerally 0.05% - 0.3%). By changing the speed of the metering screw, the feed rate can be easily adjusted, then desired concentration can be achieved.
- All operations are performed via a control panel keeping the feeding hopper field with polymer is only required manual labor for fully auto continuous operations of the system.
- Large silos and dry material feeding components also can be supplied.
- Equipped with automatic intermittent stop and cross-mixing standby time, which always keep the chemical solutions ready for usage.
- PLC and graphic display control cabinet are optional to obtain more comfortable operation.
- Material: SS 304, polypropylene (PP) material and SS 316L can also be adopted.
- Auto protection and alarm function are equipped, the operation is safe and reliable.
- Municipal sewage and industrial wastewater flocculation preparing.
- Sludge dewatering treatment sector
- Water plants
- Low maintenance requirement
- Improving operation efficiency
- Low polymer consumption