AQUA-FILTER HRŪ is a continuous self-cleaning sand filter designed and built to guarantee top quality performance for separation of suspended solids, down to the finest particles.
Impurity separation from the sand media occurs in the exclusive backwashing system. The sand is washed by the upflow inlet raw water, in countercurrent, and then reaches per gravity the top of the sand bed.
AQUA-FILTER HRŪ is easy to install, dependable, suitable for a wide variety of applications.
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Advantages |
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Unique continuous back-washing system |
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High efficiency in fine solids removal, including colloidal particles |
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Possible contact filtration thanks to deep sand bed: in-line coagulation |
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Possible post-denitrification with nutrients dosage control |
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Easy maintenance due to the fully external sand air-lift system |
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Easy installation |
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Very low operational head loss allows gravity feed in many instances |
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Low capital and operating costs |
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Applications |
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Surface water filtration |
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Algae removal |
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Drinking-water treatment |
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Municipal/industrial WWTP
- primary filtration
- tertiary treatment
- final treatment with activated carbon
- biological post-denitrification
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Reuse pre-treatments
- before ultra-filtration membrane
- before Reverse Osmosis
- before ozonization |
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Pre-treatment for cooling tower make-up |
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