ACWA AquaPyr

The AquaPyr Ultra Low Waste Filter

The AquaPyr ULWF is a low power, gravity driven, cloth media filter. The cloth media resides partially submerged in a tank with a continuous feed to it. The influent water, filters through the submerged portion of the filter drum and cloth filter media on which the solids are captured. The center of this drum collects the filtrate, which exits the drum and filter through a pipe coupling that is connected to the exterior of the tank. As more solids are collected on the filter media, the water level in the filter tank will rise and reach a level that activates the AquaPyr ULWF’s self-cleaning mechanism prior to the filter drum becoming fully submersed. The AquaPyr ULWF is cleaned, while it continues to filter water, by rotating the filter drum under a low pressure vacuum cleaning head. Unlike filters that backwash with filter water, this results in an extremely low volume of wastewater and solids, less than 0.5% of treated flow which is collected in the bottom of the low-pressure chamber. This residual sludge stream can be pumped away to the existing sludge tanks. With the solids removed from the filter cloth, the water level in the filter tank recedes to original levels and cycle repeats itself.

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Filter Range

The AquaPyr filters are available in a range of sizes with units available to treat from 5m3/h to 80m3/h allowing for the treatment at works of up to 2000PE.

  • Designed for low flows
  • Low backwash volumes <0.5% of treated flow
  • High dry solids recovery >0.5% DS
  • Tertiary P Removal in conjunction with precipitation and flocculation
  • Low power consumption
  • Low head loss
  • Modular design package
  • Small footprint, minimal civils
  • Can be supplied with renewables energy pack

Bowness Test Results

Following on from successful tests at Cranfield University, further trials have been completed at the Scottish Water Horizons facility at Bowness.

These trials were carried out looking at the TSS efficiency of the filter on both primary and final effluent further proved the efficiency and robustness of the technology within wastewater treatment.

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