Pumped Percolation Systems for polishing filters

Pump to remote areas or
Pumped low pressure uPVC pipe systems for sand filters, mounds and polishing filters

Most of us know that a home radiator heating system must be pressurised by matching the pump to the number of radiators in order to provide hot water to each radiator. We will look for specialist help to do this otherwise the heating system may not operate satisfactorily due to poor pipe and rad pressure.

In the same way the pipe network configuration of a pumped percolation pump capacity ……….

Certification in line with EPA CoP 2009,

About Ash Environmental Product and Services

We have over 25 years’ experience in small scale wastewater treatment systems and soil infiltration systems in Ireland and in the USA.

Our aim is to provide a specialist service to construction and environmental professionals in the onsite industry focussing on commercial and residential properties in unsewered areas.

We supply customised pipework and components for pressurised infiltration systems.  We also supply a range of wastewater products for use with new one-off houses and for the remediation of septic tank systems and other domestic wastewater treatment systems mainly through building merchants 

Our services include the design, supply, installation, project management and/or certification services for onsite wastewater & sewage treatment to engineers, architects, site assessors and contractors for rural houses, communities and to commercial sectors in unsewered areas.

Ash Environmental was founded in 2004 by Joe Walsh.  Joe is Chairman of the Wastewater Engineering Standards Committee of the National Standards Authority of Ireland (NSAI) and joint founding member of IOWA the Irish Onsite Wastewater Association.  He has provided specialist FETAC, and LASNTG accredited training in onsite wastewater topics. 

In the US Joe is past Steering Committee Chairman of NOWRA the US National Onsite Wastewater Recycling Association and Technical Practices committee member.     He has participated in innovative technology research projects both in Ireland and in the US and presented the findings to technical conferences.

Clients and projects include….

Navan Racecourse - Low Pressure Distribution (LPD) system

Craddockstown Golf Club, Kildare -LPD system

Wexford county council community housing - Drip infiltration system

Tanagh Outdoor Centre -Low Pressure Distribution (LPD) system,

Westmeath County Council, Community housing -Drip infiltration system

Moyne National School, Tipperary, Drip system

Kiltegan Mission, Wicklow - LPD system

An Post Sorting Office, Cashel- LPD system

Laragh NS, Co Cavan- LPD system

Knockminna National School, Sligo- LPD system

Holy Cross National School -Drip infiltration system

Kilkenny and Monaghan Strive Research project -Drip and LPP –Trinity College/EPA

Knockconan NS Monaghan -Drip infiltration system

-and many more

Drip Infiltration Systems

Drip irrigation is the most efficient method of distributing wastewater to infiltration areas. It allows effluent to be dispersed in the biologically active soil zones a few inches below the surface without ponding, water contamination or smells. It also allows the efficient reuse of the treated water along with its beneficial nutrients for landscaping in a controlled and environmentally friendly fashion. We supply Geoflow pressure compensating drip tubing which is treated for root intrusion and an antimicrobial coating to inhibit biological growth on the inside walls of the tube and on the emitters.

Drip irrigation (known as drip distribution or drip feed systems) take up less infiltration area and can be used in areas with shallow unsaturated depths of soil. This results in a smaller land requirement for percolation areas so are ideal for small sites –both domestic and commercial.

How it works

A typical drip design is to insert the dripline into the existing soil using sub-surface pipe insertion machinery such as a mole plough or similar. The drip line is inserted at a depth of 150- 200 mm below the existing ground level. Grass should be mowed regularly in dry weather with light mowing machinery.

The dripline has a series of emitters spaced at 600 mm intervals in the drip tubing which are moulded into the dripline at the time of manufacture. Each emitter releases very small quantities (0.03 litres/minute) of water which drips into the soil when the design pressure is reached.

Drip can be used on large and small systems including existing problem sites. Drip systems will maximise the treatment capacity of the soil on sites with shallow or excessively free draining soils and will improve soil infiltration in the slow draining soils due to the very small controlled doses released from each emitter orifice of 0.03 litres/minute.

Key benefits are:

• Can be used on difficult sites- high water tables, tight soils, rocky terrain, steep slopes, around existing buildings and trees.
• The system requires no gravel. It is easy to install directly into indigenous soils and the natural landscape can be maintained.
• Shallow installation by mole plough or similar maximises the use of “good” topsoil and installation depth to limiting soil horizon or watertable.

Drip can significantly reduce the amount and cost of fill material required. Drip distribution of wastewater (drip-feed) to infiltration areas is included in the Irish EPA Code of Practice 2009 under other infiltration systems. Its use is at the discretion of each Local Authority.

A growing number of drip installations have been installed - including two by Trinity College under the EPA STRIVE program in co-operation with Ash Environmental.

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4 Hole Distribution Box and Drop Box

Distribution Boxes are used to split the effluent evenly into each trench of the percolation area from secondary treatment systems and septic tanks. Ash Environmental supplies the Tuf-Tite ® Distribution Box shown here (below) with riser and tough domed lid and adjustable weirs.

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