Powdered Activated Carbon Slurry Preparation and Precise Dosing System

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The DOSAMA PAC Slurry Preparation and Dosing Technology, originating from Europe, integrates a complete set of equipment including powder storage, precision quantitative dosing, slurry proportioning preparation, and metering pump-based accurate chemical injection. This system exemplifies a safe and reliable solution combining mechanical elastic scraper arch-breaking mechanisms with precision conveying modules, effectively addressing critical challenges:

1.Impact of silo level variations on density;

2.Risks of PAC dust volatilization (environmental contamination and explosion hazards), while achieving dosing accuracy up to 2.5%.

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Black in color, powdered activated carbon primarily consists of carbon alongside oxygen, hydrogen, and other elements. Structurally, its microcrystalline carbon exhibits irregular arrangements with interconnected micropores formed during activation, resulting in a porous material characterized by low bulk density and high specific surface area. Smaller particle sizes enhance adsorption performance due to increased surface area per unit weight and more developed mesopores.

In water treatment applications, powdered activated carbon dosing typically employs two methods:

1.Wet Dosing Method:

oSlurry preparation of powdered activated carbon followed by precise metering and pumping.

oAdvantages: Higher dosing accuracy, uniform dispersion in water, longer equipment lifespan, stable operation.

oDrawbacks: Slightly higher system costs.

2.Dry Dosing Method:

oDirect injection via water ejectors.

oAdvantages: Lower initial equipment costs.

oDrawbacks: Poor dosing accuracy, uneven dispersion, frequent equipment wear, and operational instability.

Europe and the U.S. predominantly utilize the wet dosing method, with slurry concentrations typically maintained at 5–10%.

System Advantages

●Rapid and thorough mixing ensures optimal dispersion of activated carbon in water.

●Extended contact time for efficient adsorption.

●On-demand preparation and ease of operation.

●Modular, compact design with integrated components reduces footprint, installation complexity, and overall project costs.

●Advanced dosing system integrates Sodimat powder arch-breaking technology with precision dry-powder metering.

●Fully automated control: Operators simply input target slurry concentration (%) and flow rate (L/h) via the interface for unattended operation.

Precise proportional preparation and accurate quantitative dosing of solution/slurry for powdered activated carbon, lime, soda ash, and other powders.