News

Emerging Organic Contaminants

Emerging Organic Contaminants (EOCs) have been defined as synthetic or naturally-occurring chemicals or any microorganisms not commonly monitored in the environment, but which have the potential to enter the environment and cause known or suspected adverse ecological and (or) human health effects (Stewart et al. 2016). Municipal wastewater treatment plant (WWTP) effluent is recognised as a major source of EOCs into the environment.…

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Wind put to use at Bell Island

The Nelson Regional Sewerage Business Unit (NRSBU) is trialling the use of wind powered mixers in one of its treatment ponds at Bell Island. Being wind powered, the mixers will offer a considerable saving in operating costs. While not yet widely used in our part of the world, two other facilities in Australia have installed this technology and have seen improvements in the efficiency of the treatment ponds as well alongside the energy savings.…

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A+ for energy use at Bell Island

An independent energy audit of the region’s sewerage treatment plant at Bell Island has come back with impressive results. The report by energy and utility consultant firm Enercon said: “Overall, the plant is operating very energy efficiently, with many energy conserving features and practices already in place. ” Enercon went on to say the site “would fit into the top 1 % of energy audits we have done for operating efficiency”.…

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Regional Pipeline Upgrade - Progress Report 8 August 2011

Currently, March Construction, pipeline subcontractor to Downers Ltd, have installed approximately 650m of both the 800mm dia and 250mm dia HDPE pipelines.   They have started at the Bells Island end and are working towards Saxton Island and will then move towards Monaco.   March are presently working in the inter-tidal area north west of Saxton Island and excavating the trench during periods of low tide.…

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Regional Pipeline Upgrade

The Nelson Regional Sewerage Business Unit begins work next week on the installation of a new waste water pipeline across the Waimea Estuary from Monaco to Bells Island. Chairperson Donna Hiser says that it will be a great relief to soon have the new pipeline in place as it is known that joints in the current pipeline are at high risk of failure. “It has not been possible to investigate and replace those joints as any disturbance of the area around an unstable joint could have resulted in untreated sewage being released into the estuary.…

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Tenders let for pipeline upgrade

A tender to the value of $8,746,500 was let to Downer EDI Works Ltd for the construction of the works associated with the construction of the Regional Pipeline Upgrade contract.   The contract for the supply of the generators for the four pump stations (Beach Road, Saxton Road, Songer Street and Airport) was let to Powergen Group Ltd. The supply of pumps for the upgrade works at the Beach and Saxton Road pump stations was let to Mono Pumps (NZ) Ltd and the pumps for the Songer Street pump station was let to Grundfos.…

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Annual Report 2009-10 now available

The NRSBU Annual Report for 2009-10 is now available. NRSBU is pleased to highlight significant achievements in the 2009/10 financial year, including the construction of the new inlet works, primary clarifier, partial completion of the dewatering facility and the improvements to the hydraulics between the primary clarifier and the ponds that will allow better distribution of loads between the facultative ponds; the Regional Pipeline Upgrade project's approval by Nelson City and Tasman District Councils; and the NRSBU website.…

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Resource consent granted for regional pipeline project

Resource consent has been issued for the Nelson Regional Sewerage Business Unit (NRSBU) to construct a duplicate wastewater pipeline across the Waimea Inlet between the Monaco Peninsula and Bells Island. Tenders closed in October and it is expected that work will start in February 2011 with a project completion date in October 2011 The duplicate pipeline will safeguard against the potential failure of the existing estuary pipeline. The existing pipeline is in a poor state of repair and has been assessed as being at a high risk of failure.…

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Rising main design underway

The ~$20m project to create a new regional sewage pipeline from Monaco to Bells Island is underway, with the project currently in the resource consent process. Consent approval is expected around July 2010. In order not to delay the completion of the project it was resolved to continue with the detailed design while the resource consent process is running.…

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Business Plan 2010/11 under review

Each year NRSBU prepares a business plan for the consideration of its owners. The 2010/11 business plan has been forwarded to the Joint Shareholders Committee of NCC and TDC. The Committee will consider the plan and forward it to the individual Councils for consideration and approval in April/May 2010.…

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