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  HUFO® - MODERN FILTER MEDIA FOR TRICKLING FILTERS

 DESCRIPTION

OPERATING PRINCIPLES

Feed pumps distribute the wastewater over the filter media. A population of micro-organisms form a biological slime layer on the filter media of the trickling filter and reduces the organic material in the waste water. Periodically, the micro-organisms in the anaerobic zone on the media surface lose their ability to cling to the media due to the lack of sufficient oxygen and nutrients. The wastewater flowing over the media removes the slime layer from the media bed in some places and a new slime layer begins to form. Micro-organisms develop naturally and no implantation is required. The supply of air and oxygen can be naturally or by using a fan. Properly operating filter media produces no noise and no odour.


Wypełnienie złoża - Hufo

HISTORY

The HUFO® filter media was designed and patented in Finland in cooperation with the University of Helsinki.
Biofilters with HUFO®filter media operate in over 8000 wastewater treatment plants in 22 countries around the world. The largest one (volume 50.000 m3) is located in Rijada, Saudi Arabia. The HUFO® filter media is mainly used in the BIOCLERE® wastewater plants. HUFO® is manufactured in Poland since 1997.

APPLICATION

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as replacement of old filter media in existing biofilters,

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as filter media in new biofilters including BIOCLERE®.



REPLACEMENT ADVANTAGES

Many old biofilters are out of operation because of filter media clogging.
Former biofilters using stones, slag or coke can easily be clogged after some time of operation. Modern filter medias guarantee problem free operation of a treatment plant for its whole operation life.
Modern technical solutions allow very high reduction of biogenic compounds using nitrification units and units to remove phosphate.
Reactivation and modernization of old type biofilter treatment plants is much cheaper than reconstruction of the treatment plants.


 FEATURES

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low weight,

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large active surface area,

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excellent hydraulic permeability,

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long durability

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no replacement needed for operation time,

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no clogging,

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random media.


Watered biological filter

 • 

high BOD5 reduction (up to 95%) and other indices of pollution,

 • 

extremely low operation costs, statistically 70% lower than operation costs of activated sludge,

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high process reliability - pump and fan - the only elements that move,

 • 

low capital investment.


 TECHNICAL DATA

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shape: round with many conical surfaces,

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diameter/height: 180 mm/50 mm,

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surface area: 120 m2/m3,

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void: 97%,

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dry weight: 48 kg/m3,

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weight in use: 200 - 400 kg/m3,

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height (depth) of filter: 1,0 - 8,0 m,

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bottom screen: 10 x 10 cm,

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surface hydraulic load: 0,6 - 1,4 m3/m2 h,

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BOD5 - load (max): 1,2 kgO2/m3 d,

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max working temperature: 50 oC,

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material: polypropylene,

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colour: black.


 OPERATION RESULTS

POLLUTION REDUCTION
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THE DESIGNING CURVE - HUFO® 120

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FOOD INDUSTRY APPLICATIONS

One of the applications for the HUFO® filter media is wastewater treatment in food industry before discharging to sewage system or before the second stage of treatment.

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OTHER APPLICATIONS

In chemical industry in absorption, distillation, liquid cooling and aeration, water oxygenation, exhaust gas dust removal and cleaning, etc.

  Wastewater Treatment Plants  
    BIOCLERE  
    Filter media HUFO   
  Air Purification System  
    BIOWENT  
  Micro-filtration Unit  
    SCRUFILTER  
  The Roots Blowers  
    ROBUSCHI  
  Sludge Dewatering Equipment  
    DRAIMAD  
    MONOBELT  
    SCRUDRAIN  
    CMP CAP  







Wastewater treatment plants BIOCLERE | Modern filter media for trickling filters HUFO | Air purification system BIOWENT | The roots blowers ROBUSCHI
Sludge dewatering equipment Draimad | Belt filter press Monobelt | Sludge thickener Scrudrain | Polyelectrolyte preparation and dosing systems CMP CAP |