Description
Automatic Polymer Dosing Unit
Product structure
DT series automatic dosing device is mainly composed of automatic quantitative, feeding, adding dry powder feeding unit, dry powder pre-infiltration device, inlet and outlet pipelines, box and liquid level measurement mixing equipment and automatic control unit. DT series automatic dosing device is an integral system unit integrating dry powder storage, feeding, infiltration, dissolving, aging and other processes. It is a fully automatic equipment that can continuously prepare polymer solutions in batches. The device can efficiently and conveniently promote the full maturity and dissolution of the polymer, preventing the green polymer from being fed and added to the processing system. PAM powder can be dosed into the polymer dissolution tank by means of a screw feeder. The powder is mixed with water and stirred well to dissolve into a PAM solution with a concentration of 0.1-0.4%, and then the solution enters the polymer storage tank for further use in the aging process.
Optional equipment
Automatic powder hopper loading.
Minimum level probe in the powder hopper.
Stirrer in the batching tank.
Vibrator for hopper.
Prefabricated post-dilution systems.
Product description
Auto-Dosing Device for wastewater is installed before Spiral Type Sludge Dewatering Equipment. It is used in PAM (polyacrylamide) dosing dissolving mixing and solution dosing. It consists of triple cavity case, dry powder addition system, liquid mixing system, control system, liquid injection system.
Integrated dosing device for automatic batching,dissolution and integration into one ,and Fully automatic operation.
The quantitative dosing device is accurate in measurement and driven by continuously variable transmission,it is convenient to adjust the feeding amount.The concentration range of preparation agent is large.
With liquid level detection, flow control, auxiliary vibration feeding and other functions, high degree of automation.4.Tank material: stainless steel SS304 or SS316L, polypropylene PP, FRP, etc.
Applications
Using polymers and flocculants considerably facilitates the processes of removing particles and solids suspended in liquid in the following applications:
• Treating potable and industrial processing water
• Purifying waste water
• Treating sludge, in order to improve the performance of centrifuges and filter presses
• Processes for the paper, chemical, petrochemical, mineral processing, canning industrie
• Treating potable and industrial processing water
• Purifying waste water
• Treating sludge, in order to improve the performance of centrifuges and filter presses
• Processes for the paper, chemical, petrochemical, mineral processing, canning industrie
Product Serie
| DT | Capacities | Tank | Capacity | Timing | Weight | Power |
| Model | (L/h) | Volume(L) | (m³/h) | (h) | (Kg) | (KW) |
| DT200 | 200 | 350 | 0.12-0.6 | 1.0-1.5 | 250 | 0.54 |
| DT430 | 430 | 750 | 0.3-1.5 | 1.0-1.5 | 350 | 0.92 |
| DT958 | 958 | 1580 | 0.6-3 | 1.0-1.5 | 480 | 1.3 |
| DT1340 | 1340 | 2200 | 0.8-4 | 1.0-1.5 | 560 | 1.7 |
| DT2660 | 2660 | 4050 | 1.6-8 | 1.0-1.5 | 790 | 2.4 |
| DT4165 | 4165 | 6170 | 2.4-12 | 1.0-1.5 | 1050 | 3.2 |
| DT6660 | 6660 | 9610 | 4.2-20 | 1.0-1.5 | 1200 | 4.8 |
| DT10940 | 10940 | 15780 | 6-30 | 1.0-1.5 | 1450 | 6.4 |
Function
The polymer preparation tank is divided into three Chambers: Dissolution (V1), Maturation (V2) and Storage (V3), interconnected by siphons to form the perfect flow between the chambers required to form a high quality solution.
The added polyelectrolyte comes into contact with water. The water/polyelectrolyte mixture then descends into the tank below the dissolution stage to begin. In the first chamber V1, a slow stirrer keeps the contents of the tank moving ensuring thorough homogenization of the solution. Siphon transfer solution for maturation chamber V2, where another slow mixer keeps the solution homogeneous until ripening is complete. The solution then is to move to the storage room V3, from where it can be transferred for use. A level switch installed in the last chamber controls the automatic functions:
Maximum and normal levels: When the solution reaches the highest level, this switch stops the powder metering unit/liquid polymer metering pump and closes the water inlet solenoid valve. While the level is normal, the switch enables the dosing unit to function and opens the water solenoid valve.
Minimum level: When the solution drops to minimum level and below, this switch stops the metering pump and sounds an alarm indicator light on the appliance control panel.
Overflow Level: When the solution reaches the overflow point, this switch stops the dosing unit/liquid polymer metering pump and closes the water inlet solenoid valve to prevent delivery of mixed polymer solution to the drain.
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