Wastewater Treatment & Recycling

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We look beyond conventional approaches towards more sustainable solutions which take into account energy use, carbon footprint, resource recovery, and water quality benefits.

Because all wastewaters are different, it is necessary to work with a team that can combine comprehensive knowledge with practical experience in the fields of chemistry, biology, hydraulics, mechanical processes/equipment, instrumentation and control, materials handling and plant layout.

GHD can deliver on all the process components that make up a wastewater treatment plant. We have designed and project managed more than 300 wastewater treatment plants (including major municipal facilities processing 500Ml a day and industrial projects).

Our services include process design, process optimisation, plant operations and control systems. GHD can also assist clients to develop long-term, sustainable solutions for wastewater treatment including biosolids and other solids waste treatment and disposal, and effluent reuse.

Services:

  • Facilities planning
  • Alternatives analysis
  • Life cycle assessment
  • Comprehensive facility evaluations
  • Biosolids management planning
  • Comparative benchmarking
  • Treatability studies and pilot studies
  • Process design
  • Concept design
  • Detailed design for bid/tender
  • Design-build owner's engineering services
  • Design-build and alliance partnerships
  • Construction phase engineering services
  • Construction management and inspection
  • Startup and commissioning services
  • Process and energy use optimization
  • Automation/SCADA design and implementation
  • Computerised operations and maintenance manuals
  • Pretreatment programs
  • Permitting and regulatory assistance
  • Utility master planning and asset management
  • Economic analysis and rate studies
  • Greenhouse gas assessment and reporting
  • Program management

For further information, contact:

Mitchell Laginestra
Service Line Leader, Wastewater Treatment & Recycling – Australia, Chile, New Zealand, Asia Pacific, Europe and the Middle East
T: +61 8 8111 6600
E: Mitchell Laginestra


Thor Young
Service Line Leader, Wastewater Treatment & Recycling – North America
T: +1 240 206 6846
E: Thor Young

91st Ave Treatment Plant

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The 91st Avenue WWTP Chlorination Improvements project involved the replacement of a 120-ton bulk chlorine system with a system consisting of 32 one-ton chlorine cylinders.  The plant has a treatment capacity exceeding 180 mgd. The existing chlorination equipment and piping was replaced while the plant was in full and normal operating condition. The plant’s treated effluent is used at the Tres Rios Wetlands and as cooling water for the Palo Verde Nuclear Generating Station.

The project also involved the development and coordination of the Maintenance of Plant Operation (MOPO) procedures. The chlorination of the plant effluent had to be maintained at all times during construction. The project also included building structural, electrical, and HVAC modifications. The equipment installed included the following:

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Asset Management Information System Integrations, Manila Water

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Manila Water engaged GHD to develop and implement its asset management information system blueprint, as part of an Enterprise Asset Management (EAM) improvement program. Our role included development, tendering, contract management and implementation.

In addition to the blueprint, we developed a comprehensive plan for 34 identified integrations, involving nine different systems (SAP, Works Management, Capital Works, GIS, SCADA, Finance, Business Intelligence, Customer Relationship Management & Metering).

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Barrie WPCC Advanced Nutrient Removal Study

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GHD was retained by the City of Barrie  to undertake a comprehensive engineering study to investigate alternatives and develop recommendations for increasing the degree of wastewater treatment for phosphorus removal. 

The 76 MLD plant is the largest wastewater treatment plant that discharges to Lake Simcoe.  The plant is regulated by an Environmental Compliance Approval issued under section 20.2 of Part II.1 of the Environmental Protection Act, R.S.O. 1990, C.E. 19 which contains Lake Simcoe Phosphorus Reduction Strategy Effluent Limits of 0.1 mg/L Total Phosphorus (annual average concentration), effective no later than June 2, 2015.  The project includes identification and initial screening of available treatment processes and technologies, completion of a detailed evaluation of selected alternatives, implementation and monitoring on pilot plant performance and final recommendation of preferred technology.  The primary objective of the pilot study was to consistently meet 0.04 mg/L total phosphorus.

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CDCR-Susanville Wastewater Treatment Plant Modifications Project

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The California Correctional Center at Susanville and High Desert State Prison, owned by the California Department of Corrections and Rehabilitation (CDCR), has grown and prison wastewater flows have exceeded the wastewater treatment system capability. As a result of overloading of the existing treatment facility and disposal areas, the Lahontan Regional Water Quality Control Board issued a number of Board Orders requiring changes to and an upgrade of the wastewater treatment plant. GHD was contracted to design the upgrades for the plant. The nearly USD40 million project was designed in 2007 – 2008 with construction scheduled to be completed in the fall of 2009.

The existing facility is located in an unincorporated area of Lassen County, approximately seven miles east of the City of Susanville and is situated on a 1,100-acre parcel owned by CDCR. The Susanville-CDCR wastewater treatment plant provides treatment for approximately 10,000 people from both prisons by treating, storing and reclaiming wastewater for agricultural use.

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Christchurch wastewater overflows – consent application

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Rebuilding Christchurch’s infrastructure is one of the largest and most complex civil engineering projects ever undertaken in New Zealand. The infrastructure rebuild project will be on-going for at another least five years and is expected to cost approximately $2.5 billion.

In October 2011, GHD was engaged by Christchurch City Council to prepare and submit a regional consent application to repair and upgrade Christchurch’s earthquake damaged wastewater infrastructure. Even though the repairs were essential for the long-term social and economic success of Christchurch, it was anticipated that the works could result in the discharge of untreated wastewater into the Avon and Heathcote Rivers, and the Avon-Heathcote Estuary. It was therefore paramount that any discharges were mitigated and/or avoided where possible, so that public health and safety was maintained.

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Cleveland Bay wastewater treatment facility

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GHD was commissioned to design a new Biological Nutrient Removal (BNR) and membrane treatment system for the Cleveland Bay Wastewater Treatment Facility, with a capacity to cater for an estimated population of 126,000 people.

State-of-the-art biological processes were introduced, by combining an oxidation ditch (to achieve a high level of nutrient removal) with membrane solids separation, to achieve a very high effluent quality. This approach retains the simplicity and flexibility of the oxidation ditch while adding the exceptional solids separation capability of the membranes.

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Composting Toilet

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GHD's ongoing research and investigation into the application of dry composting toilets and separate collection and use of urine provides for a fundamentally different approach to sanitation.

Benefits of dry composting toilet and urine separating technology

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Cox Creek Wastewater Treatment Upgrade (Md, USA)

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GHD was retained by Anne Arundel County for the Enhanced Nutrient Removal (ENR) Upgrade of the Cox Creek Water Reclamation Facility (WRF). The 15.0 mgd (56.7 ML/d) Cox Creek WRF is the largest of the County’s seven (7) major wastewater treatment facilities and is also the County’s largest single contributor of nitrogen and phosphorus to the Chesapeake Bay. 

During the facilities planning phase, a comprehensive examination was made of all plant unit processes and hydraulics.  As part of this project, a decision was made to expand the peak day hydraulic capacity of the facility from 30 to 45 mgd (113 to 170 ML/d) to accommodate observed I/I derived peak flows. ENR alternatives were evaluated in a two-step approach with the first step shortlisting to three alternatives and the second step selecting the final recommendation based on conceptual designs and lifecycle cost analysis. A Membrane Bioreactor (MBR) process was selected to replace the existing MLE process. MBRs proved to be the right choice for the Cox Creek WRF due to very tight site constraints, inadequate existing reactor volume to fully nitrify year-round, inadequate existing secondary clarification facilities, limited hydraulic head available for process modifications, and the County’s desire to produce as high of quality of effluent as possible with the maximum degree of reliability.

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Étude avancée d’élimination des nutriments pour le centre de contrôle de la pollution de l’eau de Barrie

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La Ville de Barrie a fait appel à GHD pour réaliser une étude technique complète afin de trouver des solutions et d’élaborer des recommandations visant à augmenter le degré d’élimination du phosphore dans le traitement des eaux.

L’usine, d’une capacité de 76 millions de litres par jour, est la plus grande usine de traitement des eaux usées qui rejette ses eaux dans le lac Simcoe. L’usine est réglementée par une autorisation environnementale émise en vertu de l’article 20.2 de la partie II.1 de la Loi sur la protection de l’environnement, L.R.O. 1990, chap. E.19. Cette approbation énonce une limite de concentration en phosphore total des effluents de 0,1 mg/L (concentration moyenne annuelle) dans le cadre de la stratégie de réduction du phosphore du lac Simcoe, en vigueur depuis le 2 juin 2015. Le projet comprend l’identification et l’analyse initiale des processus et technologies de traitement disponibles, la réalisation d’une évaluation détaillée des différentes solutions retenues, la mise en place et le suivi du rendement d’une usine pilote et la recommandation finale de la technologie à privilégier. L’objectif principal de l’étude pilote était d’avoir une concentration en phosphore total de 0,04 mg/L en tout temps.

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Final secondary effluent pump station, South Tahoe Public Utility District (STPUD)

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GHD provided professional engineering services for the condition assessment, pre-design, design, and construction management services for this USD8 million final/secondary 8 mgd effluent pump station project for the South Tahoe Public Utility District. The new effluent pump station, electrical building, emergency generator and expanded SCADA system are located at the District’s wastewater treatment plant (WWTP).

This project included designing a new 8 mgd secondary effluent pump station that lifts the wastewater from the secondary clarifiers and feeds the mixed-media pressure filters prior to final conveyance out of the watershed. The project also included replacing the existing plant electrical distribution facilities and upgrading the District’s SCADA system, which resides at the WWTP and interfaces with the District’s onsite and offsite facilities to collect data, monitor systems and control facilities both onsite and offsite.

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Major waste water treatment plant for Perth

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Perth’s next big waste water treatment plant is being designed to accommodate a potential population of 800,000 people.

GHD has been engaged by the Water Corporation in Western Australia to design the Alkimos Waste Water Treatment Plant. GHD was chosen on the basis of its concept design and joins the Alkimos Water Alliance (AWA) to deliver this AUD$80 million project. AWA comprises Multiplex, McMahon and Zublin.

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Rouse Hill Recycled Water Plan

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Sydney Water in partnership with Sydney Water Corporation, John Holland, Thompson Controls, and GHD delivered the $60 million Rouse Hill Recycled Water Plant – stage two amplification project. This is the Southern Hemisphere’s largest residential water recycling scheme.

Initiated in September 2006, the project doubled the capacity of the existing waste water treatment plant to 27 million litres a day and increased the recycled water capacity to 4.7 billion litres a year (this will supply 36,000 homes in the local community at project completion).

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Sewage station upgrade meets future demand

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The regional Municipality of York in Canada’s Greater Toronto Area (GTA) looked at practical measures to cope with an expected population increase, and sought to boost its sewage system to cope until the year 2051.

To meet this requirement, GHD provided assessment and design services to increase the capacity of the Leslie Street pumping station by more than 45 percent, with an additional increase of another 50 percent for the near future.

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Smith River Rancheria wastewater treatment facility

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The Smith River Rancheria wastewater treatment facility is an efficient, effective project developed in partnership between the Tolowa People and the North Coast Regional Water Quality Control Board.

Designed to provide high quality treatment, as the Tribe’s facilities grow, the project provided a cost-effective and scaleable solution to what had been a public health and environmental problem. The project includes treatment through a membrane bioreactor to produce effluent that is suitable for unrestricted reuse and discharge in a highly sensitive watershed. Developed as part of the Tribe’s Physical Infrastructure Initiative, the project was executed on fast-track schedule, employed a design-build delivery strategy and incorporated an extensive start-up and training program that allowed tribal members to learn to manage this important new community.

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South Caboolture Sewage Treatment Plant, Australia

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A recent upgrade to the South Caboolture Sewage Treatment Plant in Queensland is accommodating future population growth in the region and achieving higher environmental standards.  

GHD has assisted Unitywater by providing preliminary and detailed design, as well as support during the tender, construction and plant commissioning phases of the project.

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Toowoomba Regional Sewerage

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Following the amalgamation of eight local government boundaries, GHD was commissioned to develop a high-level strategy for the Toowoomba Regional Council for the planning of wastewater treatment plants and effluent reuse.

The study included a review of previous planning studies completed by the former local authorities, a population review and a look at loadings. A brief assessment of the status of the area’s existing sewage treatment plants was undertaken to determine their capacity and if they should remain as a stand-alone system or be integrated with other systems.

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Town of Westport Water Pollution Control Facility Upgrade, Westport, Connecticut USA

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GHD has provided wastewater facilities planning services and designed the recommended improvements to expand and upgrade Westport’s Water Pollution Control Facility (WPCF). The award winning design required creative facilities layout and phasing of construction to allow construction on a very limited site, and provides enhanced nitrogen removal to help restore Long Island Sound.

As part of our engagement, we performed a detailed evaluation of the unsewered areas, identified the areas in need of sewers, and defined the limits of the future sewer service area. Future sewer flows were projected, which required a doubling of capacity and upgrade of the WPCF.

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Mitchell Laginestra

As a principal process engineer, Mitchell Laginestra provides technical advice and management for projects dealing with the treatment of wastewaters (municipal sewage and industrial and agricultural wastewater) and odour control. He has over 25 years' experience in wastewater treatment and is GHD’s Service Line Leader, Industrial Water & Waste Management.

Service Line Leader, Industrial Water & Waste Management – Australia, Chile, New Zealand, Asia Pacific, Europe and the Middle East
T:
+61 8 8111 6600
E: Mitchell Laginestra

Thor Young

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Thor has more than18 years' experience in the planning, design, and construction management of water and wastewater systems. He specialises in treatment facility design and plant operations, having managed projects from study through design and construction and ranging in size up to USD140 million in capital cost. Other capabilities include enhanced biological nitrogen and phosphorus removal, advanced wastewater treatment processes, headworks facilities, membrane bioreactors, and solids stabilisation and dewatering systems. Thor is a member of the International Water Federation and the Water Environment Federation and has presented papers on a wide variety of topics at local and international conferences.

Service Line Leader, Wastewater Treatment & Recycling – North America
T:
+1 240 206 6810
E: Thor Young