Water Quality & Treatment

Some problems in water are obvious - colour, turbidity and the staining of clothes in the wash. Others – taste, odour, corrosion, unsatisfactory microbiological quality, high levels of toxic substances, or even radioactivity – can be more difficult to define.

Enter GHD. Managing water quality requires careful investigation, water sampling (often over several seasons), and an understanding of the water resource and distributuion system.

We have designed, project managed and fine-tuned the operations of more than 300 water treatment plants - from 0.1Ml a day to over 2500Ml a day. Our technical solutions protect public health, improve water taste, colour and odour, reduce corrosiveness and optimise treatment plant efficiency.

We offer you services in quality assessment and enformance improvement and work with you to develop cost-effective solutions. Our team owns skill in advanced processes, membrane systems, disinfection, supervisory control and data acquisition (SCADA), automation, and remote monitoring and control of treatment plants.

Services:

  • Pumping stations
  • Water storage tanks
  • Groundwater investigations
  • Membrane processes
  • Disinfection (Cl2, ClO2, UV)
  • Chemical feed
  • Trenchless technologies
  • Distribution modelling/master planning
  • Treatment optimization/jar test studies
  • Iron filtration
  • Coagulation/filtration
  • Residual handling
  • Instrumentation and control (SCADA)

For further information, contact:

Michael Chapman
Tel: +61 3 8687 8342
Email: Michael Chapman

Ammonia Phosphorus Removal

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Ammonia Phosphorus Removal, Metropolitan Syracuse Treatment Plant Onondaga County, New York

In partnership with two other firms GHD was retained by Onondaga County, New York to provide engineering services in connection with the design and construction of improvements to its 84 million-gallon-per day Metropolitan (METRO) wastewater treatment plant, with the objective of upgrading the level of wastewater treatment provided for ammonia and phosphorus removal.

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Clear Harbour Alliance

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With the growth of Auckland City, the combined stormwater/wastewater system was exceeding capacity during rainfall events, resulting in pollution of the Waitemata Harbour. A conventional project model could not guarantee the level of service that Metrowater wanted for their customers during the separation process so they decided on an Alliance model – one that was strongly customer focussed. The project goal of cleaning up Auckland’s harbour was a philosophy of shared ownership and responsibility reflected in the principle – "it's ours".

Metrowater is Auckland City's water and wastewater utility and was established by Auckland City Council to provide water and wastewater services to over 142,000 homes and businesses, reaching 420,000 people across Auckland City.  The area of operation covers 153 square kilometres with a water and wastewater network of more than 3,600 km of pipes. Metrowater’s expectation is that their customers receive the highest quality, reliable water supply possible and that Auckland City’s wastewater networks are managed in a cost effective, environmentally sound and sustainable manner.

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Dong Tam water supply project

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A private investment was made to build a reservoir, water treatment plant with capacity of 90,000m3/day, a 45km transmission pipeline system with diameter of 800-900mm from Dong Tam to Go Cong town, and a booster pumping station in the Mekong Delta province of Tien Giang, Vietnam. GHD Vietnam was appointed to provide technical assistance, project management and supervision for the project.

The project aimed at supplying fresh water for about 590,000 inhabitants in Go Cong town and two local districts Go Cong Dong and Go Cong Tay as well as Cho Gao town and a few industrial parks in Cho Gao as a supplementary water supply. The project commenced in December 2008 under the Build Own Operate (BOO) form. Tien Giang People’s Committee and Tien Giang Water Supply and Sewerage Company will be responsible for the distribution of water and invest on construction of secondary pipe network.

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Hamilton Water Treatment Plant (New Zealand)

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The Hamilton City Council in New Zealand wanted a world-class Water Treatment Station that met the city's water needs and exceeded or met New Zealand Drinking Water Standards at the lowest whole-of-life cost.

The original Hamilton Water Treatment Station (WTS) was a conventional clarification and filtration plant with a nominal capacity of 80 ML/d. The WTS drew water from the Waikato River and, in recent years, the water has shown increasing levels of unpleasant taste and odour as river algal levels increased. Cyanotoxins levels above detectable levels have also been found.

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Drenaje agua de mina

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Ingeniería conceptual manejo integral de aguas de drenaje de mina - Región de O'Higgins, Chile.

Codelco-Chile, División El Teniente contrató los servicios de GHD para realizar un estudio de ingeniería conceptual para el manejo de las aguas de drenaje de mina.  En este proyecto participaron en forma conjunta los equipos de las áreas de agua y medio ambiente. El objetivo principal fue implementar una solución integral y sustentable para las descargas de las aguas de drenaje de la mina con el fin de dar cumplimiento al marco regulatorio ambiental vigente. Estas descargas provienen de los aportes de aguas subterráneas, infiltraciones de aguas de deshielo y/o aguas lluvia que ingresan a la mina a través de la superficie del cráter. Luego de su paso a través de la roca y de la faena minera, cuentan con un alto contenido de metales, sulfatos y condiciones de acidez que pueden afectar al río Coya, ubicado en la Región de O'Higgins, aproximadamente 120 km al sur de Santiago. Los principales alcances considerados en el proyecto fueron: análisis de riesgos ambientales y sociales, intercepción de aguas antes de su ingreso a la mina, segregación de aguas ácidas al interior de la mina, tratamiento de aguas de drenaje de mina, transporte y recirculación de aguas de drenaje de mina, y embalse regulador de aguas de drenaje.

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Scottsdale Booster Station

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Scottsdale Booster Station

The City of Scottsdale commissioned GHD to design Booster Pump Station Number 179 (BPS179) to provide water pressure to the downtown Scottsdale area. The station serves as a dual purpose facility. It supplies potable water at a higher pressure to serve new high rise commercial and residential condominium projects.  It also serves as a link to the downtown arts district. The project’s architecture complements the atmosphere of downtown Scottsdale.

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Water Treatment Plant Improvements

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GHD provided evaluation, design and construction services for comprehensive improvements to the City of Binghamton’s water filtration facilities and Water and Sewer Department offices.

The facility is a 20 million gallons a day (76Ml/d) conventional filtration plant, including: a raw water pumping station and intake on the Susquehanna River; chemical feed building housing alum, chlorine dioxide, sodium chlorite, powder-activated carbon, acid, caustic and polymer; four flocculation/sedimentation basins; and 10 rapid sand filters, chlorination, corrosion control and fluoridation.

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Western Corridor Recycled Water Project (Qld, Australia)

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The AUD$2.5 billion Western Corridor Recycled Water Project is Australia’s largest water recycling scheme and the third-largest advanced water treatment project in the world.

It uses secondary wastewater from Brisbane and Ipswich, to produce 232Ml of purified recycled water a day. The project is the Queensland State Government’s response to unprecedented demand on its water supply due to population growth, climate change and the worst drought in recorded history.

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Michael Chapman

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Mike is a chemical engineer with some 35 years' experience in the water industry. He is a water treatment and water supply specialist and has extensive experience in water and recycle treatment plant design, water quality risk assessment, hazard analysis and critical control points (HACCP) plans, R&D and water resource modelling and strategy development. He is currently the Service Line Leader, Water Quality & Treatment, which means he is the international technical leader for this area in GHD.

Position: Service Line Leader, Wastewater Quality & Treatment
Tel: 61 3 8687 8342

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