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Geestmerambacht - Cellvation

SMARTech n.

Integrated municipal WWTP

Key enabling process(es)

SMART-product(s)

SMARTech1

Geestmerambacht (Netherlands)

Upstream dynamic fine-screen and post-processing of cellulosic sludge

Cellulosic sludge, refined clean cellulose

The WWTP of Geestmerambacht is situated between Schoorldam and Koedijk, along the Noordholland Canal in the Dutch province North Holland, treating Dry Weather Flow (DWF), of 4,160 m3/h and maximum flow (FFT) of 16,300 m3/h. Anaerobic and aerobic treatment is provided for wastewater, while sludge treatment line includes the processes of thickening and dewatering.

SMARTech1 is the key to enable primary cellulose harvesting from medium-large WWTPs. It applies the primary concentration of wastewater by Salsnes Filter dynamic fine-sieve, which can enable maximal recovery of resources. The Salsnes Filter separates cellulosic sludge that is followed by post-processing inside the WWTP. The latter includes a compact sequence of operation unites imported by the paper and food industry to produce clean and marketable cellulose. The cellulosic material was also provided outside the WWTP for the downstream blending with PHA and processing for final bio-composite production (Downstream SMARTechA).

Highlights and main results

  • Overall winner Aquatech Innovation Award 2017
  • Recovery of 150 kg/week of recovered cellulose ReCell®
  • ReCell® has been used as additive in road construction and as fibre material in bio-composites
  • Reduction of CO2 emissions of 2 tonnes per ton ReCell®

Impact of the system

  • Reduction in aeration energy of up to 20%
  • Reduction in sludge volume up to 10%
  • Reduction in Total Suspended Solids in treated influent up to 55%
  • Reduction in COD in treated influent up to 30%
  • Reduction of CO2 foot print of up to 15%

cellulose recovery
smartech1

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SMART-Plant scales-up in real environment eco-innovative and energy-efficient solutions to renovate existing wastewater treatment plants and close the circular value chain by applying low-carbon techniques to recover materials that are otherwise lost.

Seven plus two (7+2) pilot systems were optimized for more than two years in real environment in five municipal water treatment plants, including also two post-processing facilities. The systems were automatized with the aim of optimizing wastewater treatment, resource recovery, energy-efficiency and reduction of greenhouse emissions. A comprehensive SMART portfolio comprising biopolymers, cellulose, fertilizers and intermediates were recovered and processed up to the final commercializable end-products.

Dynamic modeling and superstructure framework for decision support was developed and validated to identify the optimum SMART-Plant system integration options for recovered resources and technologies.

The integration of resource recovery assets to system wide asset management programs were evaluated in each site following the resource recovery paradigm for the wastewater treatment plant of the future, enabled through SMART-Plant solutions. The project proved the feasibility of circular management of urban wastewater and environmental sustainability of the systems, through Life Cycle Assessment and Life Cycle Costing approaches as well as the global benefit of the scaled-up water solutions.

Global market deployment was achieved as right fit solution for water utilities and relevant industrial stakeholders, considering the strategic implications of the resource recovery paradigm in case of both public and private water management. New public-private partnership models were also explored connecting the water sector to the chemical industry and its downstream segments such as the construction and agricultural sector, thus generating new opportunities for funding and potential public-private competition.