SIGMADAF - Model FPBC - Dissolved Air Flotation System for Low to Medium Solids Loaded Wastewater Flows. DAF Clarifier
The FPBC flotation system is a high-built separator designed to treat low to medium loaded waste waters, even those containing low buoyancy particles.
The system is based on the counter-current flow principle, through an inclined corrugated plate pack. Water is introduced into the system in a cross-flow configuration which effectively reduces the distance that solids have to travel to be separated effectively. Within the compact separator, a thin layer plate pack has been installed to obtain a maximum separating surface area. The separation velocity is determined by the flow (Q) and the effective plate surface (S), therefore particles which achieve a higher rising velocity (by micro bubble aeration) than the overflow rate (Q/S), will be separated.
Due to the application of the plate separating technology, maximum separation efficiency is obtained with very
low overflow rates, making the separators compact and effective.
Dissolved Air Flotation (DAF) technology is utilised to remove oils, grease, solids and suspended flocculants that do not possess sufficient buoyancy to float; or where an emulsion of oils and solids (with increased density) require air flotation to enhance the separation process.
The use of micro-bubbles (30 to 50-micron range) increases efficiency, as smaller bubbles easily adhere to equal-sized or larger particles, boosting the overall effectiveness of the system.
The DAF FPBC is a high-performance system with distinguishing features.
The FPBC is a high-performance system with distinguishing features. It includes a single movement separator, which rotates against the hydraulic flow of the water, helping to minimise the skimming distance of the floated sludge and eliminating solids carry-over. It creates a sludge with a dry solids content 3 to 4 times greater than conventional systems. The result of which, is a reduction in the need for and scale of any future treatment, such as de-watering or drying, consequently resulting in reduced follow-on costs.
The bottom sludge within the system is held in place as it thickens and partially de-watered by the shaftless auger system. This enables the operator to control the sludge thickness, eliminates the early-removal of solids and reduces the build-up of sludge. The residual sludge is then transported to a central discharge point and removed via an automatic pneumatic valve. This discharge cycle is self-cleaning, and any particles adhered to the walls or sides of the system will loosen and follow their initial flow path.
- Effective separation surface compared to other systems with low investment costs
- Compact system
- Unique sludge de-watering and removal system,
producing a highly concentrated sludge · Efficient laminar flow regime
- Low maintenance and easy to operate
- Custom built
- Mineral oil and petrochemical industries
- Textile production
- Poultry, red meat and fish processing plants
- Fast food manufacture