What we do

1. Waste water treatment

  For projects such as hotels, golf clubs, housing schemes and entire villages we normally use the latest generation high quality rotating biological contactors (RBCs). We have more than 200 plants installed in Ireland since 1981.

These plants have proven themselves to be simple to maintain and operate. Most importantly, they also consistently achieve the required standard of effluent.

For >1,500 population equivalent applications, requiring very high quality effluent standards and large PE projects, we use latest generation SBR technology from Biogest International GmbH. These have been proven in Ireland and internationally.

A key component of the Biogest SBR process is their unique turbine design which is inverter controlled to achieve both aeration and later mixing during an anoxic denitrification stage.

The SBR is a sophisticated and reliable sewage treatment plant suitable for use by Local Authorities.

2. Pumping

We are a leading designer and supplier of surface and sewage pumping stations. These vary in complexity from a single pump catering for an individual house to twin explosion proof submersible pumps c/w lightning protection, flow measurement, power factor correction etc. For long rising mains, we can carry out a hydrodynamic analysis to determine if water hammer is likely to occur and, if so, what measures are required to prevent it.

We recommend the use of ABS submersible pumps. ABS have a 400 strong workforce in Wexford, supplying the Irish and foreign markets.

Applications

  • County Councils
  • Government Departments
  • Hotels
  • B&Bs
  • Country Houses
  • Public houses
  • Golf Clubs
  • Nursing Homes
  • Schools
  • Housing schemes
  • Community Centres
  • Soccer Clubs

3. Plant Upgrading & Refurbishment to reduce Operation & Maintenance costs and improve process compliance

We have completed a number of Plant Upgrading and Refurbishment contracts on Waste Water Treatment Plants. An Upgrade or Refurbishment may be required when:

  • The plant is overloaded hydraulically or organically,
  • Existing equipment is unreliable or costly to operate,
  • The final effluent standard to be achieved has become more stringent,
  • Introduction of an EPA Licence,

Our experienced engineering staff can survey the existing treatment plant and carry out a survey to compare the existing capacity to the desired standard or specification. Following this, our engineers will complete an optimisation process to ensure that all existing equipment is utilised to its full potential. If necessary additional accessories can then be added to the site to achieve the new standards required. By completion of the above procedure, we can guarantee that a plant upgrade / refurbishment is carried out in an efficient and cost effective manner.

Molloy Engineering only uses equipment that has a proven long history of:

  • Process performance,
  • Reliability, and is
  • Maintainable, and
  • Cost effective (procurement, installation and running costs considered)

4. Maintenance contracts on Pump Stations and Wastewater Treatment Plants

We offer a range of cost-effective maintenance contracts to suit all client requirements. Contracts can include any of the following:

  • Regular maintenance visit(s)
  • Process maintenance
  • Sampling of final effluent
  • De-sludging
  • Replacement of any equipment if necessary

By maintaining the equipment on a regular basis, the longevity of the equipment can be maximised and emergency breakdowns can be minimised. Regular maintenance saves the client money.

Please contact us to discuss your maintenance requirements.

5. Oil and grease separation

Separators are used on sites where there is a risk of oil entering ground or surface waters. Where there is a high risk of oil entering the collection system, a full retention separator should be used. Where there is a lower risk, in car parks for example, a bypass separator is usually appropriate.

Both types are available in either Class I or Class II. Class I has a coalescer and is used when discharging to surface waters.

We also supply a full range of silt traps, grease traps and oil level alarms.

We recommend the use of Klargester separators which are designed and tested in accordance with EN858.