荷兰DHV公司继续扩大其好氧颗粒污泥技术Nereda技术世界范围内大规模工程化应用进程其最新公布的业绩显示，Nereda技术将为都柏林规模40万m3/d的污水厂提供扩容方案，利用原场地，就地扩容后的能力可达50万吨/m3，能力扩充进20%

水进展观察，此项目应该是好氧颗粒污泥技术目前世界范围内最大规模的应用DHV近几年来，其专利技术Nereda技术的快速扩充

Royal HaskoningDHV has been appointed by Irish  Water to the Ringsend Wastewater Treatment Plant project team to provide  expertise on its sustainable wastewater reduction treatment technology, Nereda®.  The Ringsend Wastewater Treatment Plant was originally designed to treat  wastewater for a capacity of 1.64 million population equivalent (PE) but is now  operating over that capacity at 1.9 million PE. This project is vital as the  population of Irelands capital continues to grow and the economic needs of the  area continue to expand.

In  2012 planning permission was granted for a 9km long sea outfall tunnel to  relocate the discharge of treated effluent into the Irish Sea. Since this  planning permission was granted, this advanced, nutrient-reduction treatment  technology known as Aerobic Granular Sludge (AGS) has been identified as an  alternative treatment process, which would allow the discharge of treated  wastewater to remain at its current location, removing the need to build the  tunnel, and therefore delivering significant savings on this project estimated  to be in the region of 170 million.

The  Nereda® aerobic granular sludge technology combines a small footprint with high  treatment efficiency and effluent quality, thus allowing the treatment process  and sustainable discharge to remain at the existing site in Dublin Bay.  Following the upgrade project, the Ringsend Wastewater Treatment Plant will  have the capacity to treat the wastewater of 2.4 million population equivalent  (PE) in compliance with the EU water quality directives.

Nereda® 简介 

Nereda®采用好氧颗粒污泥的独到特性来处理废水， 这种由净化细菌形成的致密颗粒具有极佳的沉降性 能Nereda®由代尔夫特科技大学发明，通过独特的公 私合营方式，由Royal HaskoningDHV集团与多所大学 荷兰应用水研究基金会(STOWA) 及荷兰水务局合作开 发Nereda®工艺已掀起了改革废水处理工艺的新浪 潮

René  Noppeney, Royal HaskoningDHVs Global Director for Water Products &  Innovation said: We are very proud to contribute to upgrading one of the  worlds biggest municipal wastewater treatment plants in a sustainable manner  by providing expert knowledge on our Nereda® aerobic granular sludge  technology. The use of Nereda® would ensure that all wastewater generated in  the Greater Dublin Area is appropriately treated to safeguard human health and  protect the environment in compliance with Europes Urban Wastewater Treatment  Directive. 

Royal  HaskoningDHV is working on Irish Waters Ringsend Wastewater Treatment Plant  Upgrade Project in a consortium with its Irish partners, TJ OConnor &  Associates and J. B. Barry and Partners.   Overall completion of the Ringsend Project is estimated to be in the  early 2020s.

Subject to planning permission the Ringsend Wastewater  Treatment Plant in Dublin will be the fourth plant that Nereda® technology will  be in use in Ireland including Clonakilty, Carrigtwohill and Cork Lower  Harbour.

The revised project includes:

• Proposed exclusion of the 9km long undersea tunnel.

• Proposed increase in the flow through the plant by approx. 20% thereby increasing the amount of wastewater that can be treated and reducing the level of storm overflows which occur during heavy rainfall events.

• Proposed extension to treatment capacity and the use of AGS technology in the existing treatment tanks, increasing the capacity to 2.4 million Population Equivalent (PE) as approved by An Bord Pleanála in 2012.

• Proposed expansion of the plants sludge treatment facilities to match the overall increase in wastewater treatment capacity.

• Proposed provision of a new phosphorous recovery process.

• Proposed provision of additional odour control facilities.

In particular, it should be noted that:

• No increase in capacity over what was approved in 2012 is being proposed.

• The revised project will meet the same stringent odour control standards as set out by An Bord Pleanála in 2012.

• From an operational and visual perspective, the revised project is not expected to result in any significant change on the site of the plant from the project approved in 2012. The main change will occur outside the site due to the proposed exclusion of the 9km long undersea tunnel.

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