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Sewage Treatment Systems




 

Aswaflow Pumped
Wastewater Treatment

The traditional Aswaflow SBR System is pumped. This means a unit of pumps is used for aeration, to pump effluent between the chambers and to discharge the clarified water.

How the Aswaflow System works


Molloy Precast provide an all-in-one system including the treatment pumps, hose pipes and control panel.

Advantages of Pumped System

  • Low running costs
  • No concrete backfill requited
  • Certified technology EN 12566-3
  • Completely underground

Molloy Precast offer:

  • All-in-one treatment system ready for installation
  • Expert advice and an expert after sales service
  • Site suitability reports for planning permission
  • Percolation kits designed specifically for your site

Aswaflow Air Lift
Wastewater Treatment

The Aswaflow SBR system is now available with air lift technology. This technology eliminates the need of electrics in the treatment tank.

How the Aswaflow System works


Bubbles of air are blown into the system's pipework to move water between the two chambers. When the air enters the pipe it naturally moves upwards pushing water ahead of it. This air is produced using an air compressor. A single compressor is used to feed the transfer pipe, sludge return pipe, discharge pipe and the air diffusers. Molloy Precast provide an all-in-one system inluding the air compressor, hose pipes and control panel.

Advantages of Air Lift System

  • No need for pumps
  • No mechanical aerator
  • Low running costs
  • No concrete backfilling required
  • Certified technology EN 12566-3
  • Completely underground





How the Aswaflow System works

The domestic Aswaflow sewage treatment system is separated into two chambers/tanks. Raw sewage enters the first chamber where it is stored while treatment is undergone in the second chamber. The first chamber also prevents any large solids from entering the second chamber. Wastewater is treated in the second chamber prior to discharge into the percolation system. The Aswaflow sewage treatment system uses sequence batch reactor technology to treat wastewater econ to the required EPA standards in an economical manner. As the name suggests, sewage is treated in batches, not in a continuous flow. The advantage of this is that shock loads (typical of a domestic house) of sewage is buffered and does not force partially treated or untreated wastewater to be discharged. Another advantage of the SBR system is its ability to adjust energy consumption with high/low flows, hence, reducing electrical costs. An SBR system treats wastewater in a cycle of four phases namely fill, react, settle and discharge. The Aswaflow system repeats this cycle 3 times each day. For more information on how the SBR system works, visit our knowledge base. 

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Domestic Systems

Molloy Precast offer a comprehensive range of Aswaflow systems to cater for different scenarios, we manufacture a large variety of precast tanks for a wide range of uses; this allows us to combine different sized tanks to provide you with an accurately sized system. Below are some example systems.


EN 12566-3 Cert | The AswaFlow Sewage Treatment System is certified to European standard and suitable for use in Ireland.

Aswaflow® S
 Aswaflow S - 6000 Litre Volume: 6000 litres
Population Equivalent: 4-8 P.E.
Drawing no.: STS-S-8PE
  • Suited to a modern family home
  • Lid casted on creating a fully sealed tank, ideal for wet sites and deep installations
  • Simple installation, no concrete back fill required
Aswaflow® S+
 Aswaflow S+ 7000 litre Volume: 7000 litres
Population Equivalent: 4-12 P.E.
Drawing no.: STS-S+-12PE
  • Suited to a modern family home
  • Lid casted on creating a fully sealed tank, ideal for wet sites and deep installations
  • A single unit making installation quick and simple, no concrete back fill required
Aswaflow® H+H
 Aswaflow H+H 6000 litre Volume: 6000 litres
Population Equivalent: 4-8 P.E.
Drawing no.: STS-H+H-8PE
  • Suited to a modern family home
  • Two light weight tanks can be lifted using JCB or 10 tonne machine, ideal for sites with limited access
  • Simple installation, no concrete back fill required
Aswaflow® F
 Aswaflow F 6100 litre Volume: 6100 litres
Population Equivalent: 4-8 P.E.
Drawing no.: STS-F-8PE
  • Suited to a modern family home
  • Ideal for sites with shallow bedrock
  • Simple installation, no concrete back fill required

For larger models, please see commercial systems.

Percolation

The term polishing filter is used for a percolation system when used in conjunction with a sewage treatment unit. A polishing Filter has two purposes, to further treat otherwise high quality wastewater and to distribute wastewater into the ground water system. Molloy Precast don’t stop with just your Sewage treatment unit, we offer advice and demonstrations to our customers on best practice with polishing filter installation. We recommend a visit to our training and demonstration facility at our premises in Tullamore. Please visit our knowledge center for more information on polishing filter installation. Molloy Precast offer polishing filter kits, please click here for more information.

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