Aquaabf

The Aqua Aerobic Aqua ABF(Aquaabf)is a continuous rapid-rate downflow filter. This type of granular media gravity filter has been used successfully for decades in the treatment of potable water. It is an efficient means of reducing turbidity and suspended solids in industrial water treatment systems.

FEATURES

♦ Simple design and high quality corrosion resistant materials insure reliability and durability

♦ Low maintenance. All drives, pumps, motors and bearings are located for easy access

♦ Adaptable design utilizes cast-in-place concrete or steel package tanks. Single media sand,dual media sand and coal, or granular activated carbon

♦ Fully automatic. Minimal operation attention required.

♦ Standard widths of 6, 9, 12.5 and 16 ft. for site adaptability and cost efficiency

♦ High efficiency filtration. Typical 79-90% SS reduction in domestic sewage

ADVANTAGES

♦ Continuous filtration, even during backwash mode

♦ No backwash or washwater holding tanks required

♦ As little as 6" of headloss through filter

♦ Low terminal head losses will not force solids into media

♦ Continuous static head above media prevents air entrapment under the porous plate

♦ Surface mat filtration – no mudball formation

♦ Only 1-2% of daily flow is normally required for backwash

♦ No pipe galleries or air bowers mean less maintenance

♦ Ideal for both Municipal and Industrial water filtration systems

APPLICATIONS

· Municipal Water

o Turbidity reduction

o Color reduction

o Organics removal

o Iron and mineral removal

o Taste and odor control

· Municipal Wastewater

o Suspended solids reduction

o BOD, COD, TOC reduction

o Reuse

o Wastewater odor control

· Industrial Water or Wastewater

o Solids removal

o Turbidity reduction of process makeup water

o Chemical precipitate removal

o Toxic chemical reduction

o Suspended solids, BOD, COD, TOC reduction

FILTERING - The AquaABF is designed to filter water and backwash filter cells simultaneously during normal operation. By design, the AquaABF filter bed is divided horizontally into 8” or 12” wide cells. Inlet water floods the sand bed through multiple inlet ports via gravity and flows through the granular media and porous plate. Filtrate passes through the effluent backwash port and into the effluent channel.

BACKWASH - Backwashing occurs under the hood, which is suspended below the traveling carriage of the AquaABF. During backwash, the carriage and attached hood move slowly across the filter bed. This action consecutively isolates and backwashes each individual cell. Cells not under the hood continue the filtering process as the hood and carriage continue across the AquaABF filter bed. A backwash pump draws filtered water from the effluent chamber and backwashes each cell by pumping water back through the effluent port. Another pump picks up the washwater, which has collected in the hood and discharges it to the washwater trough. The backwash water filtration system backwash cycle occurs only when needed because of headloss or, if desired, by preselected time cycle.