Waste Water

Our Waste Water Case Studies:

Helensville WWTP Upgrade (8).jpg

Waste Water - Case Studies

  • Wanganui WWTP
    • Project:Wanganui WWTP
    • Client:Downer Group
    • Year:2018
    • In 2017, Service Engineers (SE) were contracted by Downer Infrastructure (previously Hawkins Infrastructure (NZ) Ltd) to supply and install the principal parts of the mechanical plant for the new Wanganui Waste Water Treatment plant. On the water side, this includes
  • Te Awamutu WWTP
    • Project:Te Awamutu WWTP
    • Client:Waipa District Council
    • Year:2018
    • In 2018, Service Engineers Limited completed the upgrade and capacity increase of Te Awamutu WWTP.  The purpose of the project was to overhaul the existing dewatering system which had failed and hadn't been operational for some time. The scope
  • Mangere WWTP Bio-Solids Ventilation Upgrade
    • Project:Mangere WWTP Bio-Solids Ventilation Upgrade
    • Client:Watercare Services Ltd
    • Year:2016
    • Service Engineers was contracted by Watercare to install fans and ducting around the plant to enhance environmental performance and control odour issues in the Bio-Solids building at Mangere WWTP. Installation of mechanical plant including pipework, pumps, valves, access structures
  • Queenstown WWTP
    • Project:Queenstown WWTP
    • Client:Queenstown District Council (End User)
    • Year:2016
    • In February 2016, Service Engineers Ltd was selected to build three shaft less screw conveyors to convey dewatered sludge from the discharge chute of the two decanter centrifuges into two new 12.5m3 sludge bins, which were also supplied by
  • Mangere Digester Roof
    • Project:Mangere Digester Roof
    • Client:Watercare
    • Year:2014
    • Brian Perry Civil are the Main Contractor for the construction and commissioning of an eighth digester at the Mangere Wastewater Treatment Plant. The eighth digester will consist of new design and construction and has a larger tank volume than others
  • Army Bay Sludge Tank Replacement
    • Project:Army Bay Sludge Tank Replacement
    • Client:Watercare
    • Year:2013
    • Service Engineers was appointed as the main contractor for works at the Army Bay site.  This project was the most recently completed work by SEL at Army Bay, as multiple projects have been completed in the past, in an on-
  • Helensville WWTP upgrade
    • Project:Helensville WWTP upgrade
    • Client:Watercare
    • Year:2013
    • SEL was appointed as the main contractor, which covered all Civil, all Electrical, all SCADA and PLC work.  This plant was a live plant and had to be kept live during the entire course of the project. The project also
  • Hillsborough Pumping Station Pipework Replacement
    • Project:Hillsborough Pumping Station Pipework Replacement
    • Client:Watercare Service Limited
    • Year:2013
    • Hillsborough Pump Station is located on the shore of Manukau Harbour, pumping the flow from the Onehunga Branch Sewer up to a connection on the Western Interceptor Sewer at the entrance to the Manukau siphon.   The station was constructed in
  • Morrinsville Tanks WWTP upgrade
    • Project:Morrinsville Tanks WWTP upgrade
    • Client:Matamata Piako District Council
    • Year:2012
    • The contract was for the supply and installation of two 200m3 CST, glass fused to steel tanks for the the storage of untreated sludge.  These were constructed on site by SEL, including the supply and installation of access ladders and
  • Timaru WWTP upgrade - Penstocks
    • Project:Timaru WWTP upgrade - Penstocks
    • Client:Timaru District Council
    • Year:2012
    • Timaru District Council has designated a program of works, encompassing several different projects to achieve separation and treatment of industrial and domestic waste water flows. As part of this program, the Main Trunk Sewer Renewal has provided the necessary infrastructure
  • Mangere WWTP CAASU
    • Project:Mangere WWTP CAASU
    • Client:Watercare Services Limited
    • Year:2010-2011
    • The project primarily involved installation of 2 large, client supplied centrifuges and 7 spiral conveyor systems at New Zealand's largest Waste Water Treatment Plant at Mangere.   This included design, supply and installation of sludge and polymer pumps and associated
  • NSWWTP De-Watering Building
    • Project:NSWWTP De-Watering Building
    • Client:Watercare Services Limited
    • Year:2010
    • The main contract was awarded to Service Engineers Limited who subcontracted Coastline Construction Group for all civil and building work, and Current Electrical for electrical works.   The majority of the contract was civil based and allowed for: a new entrance
  • NSWWTP Pond Hydraulics
    • Project:NSWWTP Pond Hydraulics
    • Client:Watercare Service Limited
    • Year:2010
    • The main contract was awarded to Service Engineers Limited who subcontracted Coastline Construction Group for all civil and building work, and Current Electrical for electrical works.   The contract involoved all works required for: raising the Outlet Structure of Secondary Settling
  • Project Hobson - Heat Exchangers
    • Project:Project Hobson - Heat Exchangers
    • Client:Fletcher Construction Company for Watercare Services Limited
    • Year:2009
    • This project was a joint venture between The Fletcher Construction Company (FCC) and McConnel Dowell. Service Engineers Limited worked as a subcontractor to FCC.  The main contract was to construct a 3.5km tunnel under the estuary from Hobson Bay
  • Army Bay WWTP Solids Thickening Upgrade Stage Two
    • Project:Army Bay WWTP Solids Thickening Upgrade Stage Two
    • Client:Rodney District Council
    • Year:2009
    • This contract included the supply, fabrication, installation and commissioning of a fully operational WAS thickening facility at Army Bay WWTP, including: all pipework; a (client supplied) Gravity Belt Thickener; pumps, valve etc.  Service Engineers Limited was the main contractor for
  • NSWWTP - Sludge Thickening & Blending Upgrade
    • Project:NSWWTP - Sludge Thickening & Blending Upgrade
    • Client:North Shore City Council
    • Year:2009
    • Service Engineers Limited was the main contractor on the project, subcontracting the electrical work to Current Electrical and the civil/construction work to Coastline Construction Group Ltd and Contract Landscapes.  The contract included the supply, installation and commissioning of all
  • Warkworth WWTP Peak Flow upgrade
    • Project:Warkworth WWTP Peak Flow upgrade
    • Client:Rodney District Council
    • Year:2008/9
    • The focus of this contract was to improve the plants ability to cope with Peak / Storm flows. The design was undertaken by Harrison Grierson.  As head contractor Service Engineers' scope included: installation of the Acti-flow (Veolia proprietary storm flow
  • Beachlands WWTP upgrade
    • Project:Beachlands WWTP upgrade
    • Client:Fulton Hogan - Manukau Water
    • Year:2008
    • This contract covered major upgrade works to an existing airated pond system. It included the addition of a new inlet screen and a tertiary disc filter. The design was by Opus.  Service Engineers Ltd's contract included the installation of
  • Rosedale Stage 5 PST Upgrade
    • Project:Rosedale Stage 5 PST Upgrade
    • Client:Fulton Hogan - North Shore City Council
    • Year:2007/8
    • Service Engineers Limited has been involved in many projects for the NSCC, primarily at the Rosedale site; which operates an MLE treatment system. This project, however, was the most sizeable undertaking to date. Our scope in the design/build partnership
  • Turangi WWTP
    • Project:Turangi WWTP
    • Client:HEB Construction - Taupo District Council
    • Year:2006
    • This MBR plant was designed by Harrison Grierson and was largely a green fields build.  Service Engineers Ltd was responsible for the installation of proprietary mechanical equipment supplied by the principal, such as the MBR modules and the inlet screen.  
  • Army Bay WWTP upgrade
    • Project:Army Bay WWTP upgrade
    • Client:Rodney District Council
    • Year:2005
    • This project covered a major upgrade of the existing site and plant. SKM were responsible for the overall design of the 2 new SBR's and their positioning in the existing system.  Service Engineers took on a design/build role
  • Tirau WWTP Upgrade
    • Project:Tirau WWTP Upgrade
    • Client:South Waikato District Council
    • Year:2005
    • Service Engineers' contract covered the refurbishment and upgrade of an existing WWTP including the supply and installation of all proprietary equipment and MBR's.  This included: stainless, carbon steel, and plastic pipe work.          
  • Rosedale WWTP Peak Flow & Gravity thickeners
    • Project:Rosedale WWTP Peak Flow & Gravity thickeners
    • Client:Fulton Hogan - North Shore City Council
    • Year:2004
    • Service Engineers was sub-contracted to Fulton Hogan for the complete supply and installation of all mechanical components. There were two stages to the works. Stage 1 - the Peak Flow System. Stage 2 - the Gravity Thickeners. The two gravity thickeners (
  • Mangere WWTP Balance of plant contract
    • Project:Mangere WWTP Balance of plant contract
    • Client:Watercare Services Ltd
    • Year:2002
    • Service Engineers' contract covered the following: design and build of ancillary systems for the co-generation upgrade (including stainless and plastic piping systems for digester and natural gas); selection, supply and installation of Gas blowers, boilers, gas dryer, pumps, etc.  
  • Mangere WWTP other contracts
    • Project:Mangere WWTP other contracts
    • Client:Watercare Services Limited
    • Year:2003 - 2009
    • Projects completed on the Mangere site over the years are as follows:   2003 - Gas Burner upgrade. 2003 - Siloxane removal system for digester gas. 2003 - HS2 removal system. Design build of 2 large stainless steel pressure vessels. 2005 - Fairview pump station.
  • Rosedale WWTP Other contracts
    • Project:Rosedale WWTP Other contracts
    • Client:North Shore City Council
    • Year:1997 - 2009
    • Other projects completed on the Rosedale site over the years:   1997 - Inlet works mechanical upgrade. 1999 - Design and Build 2 x 22m diameter floating gas holder digester covers and all associated blowers, heaters, pumps and piping. 2000 - Sludge dewatering upgrade.