SEWAGE TREATMENT PLANTS
Sand Filter in Wastewater Treatment
Case study overview
Date
March 2022
Location
Listowel, Co. Kerry
Industry Sector
Residential
Product Used
Sandcel Sand polishing filter and Sewage Treatment plant (Novo UK6)
Project Introduction
The purpose of this case study is to highlight the challenges and installation of a sand filter in wastewater treatment. This project involves the extension and renovation of an existing dwelling in Listowel, a heritage market town in County Kerry. The site assessor was also the contractor for this wastewater installation.
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THE CHALLENGE
Considering the poor ground conditions and the lack of space, Denis O’Connell (Civil Engineering) recommended the ideal solution that would work in the area – A Tricel Novo wastewater treatment plant with a Sandcel Sand polishing filter.
The Installation
Below are images showing the steps involved in installing the Sandcel Sand Polishing Filter. The sand filter is a tertiary treatment consisting of stratified layers of certified sands in accordance with the EPA Code of Practice.
GRP panels are installed with gravel distribution layers and distribution pipes as a base layer. Effluent is distributed evenly across the entire surface area of the filter media by the pipework within the top pea-gravel layer – the capping is made with gravel.
Afterwards, a geotextile is placed on top. Geotextile is rot-proof, irremovable, and permeable, making it ideal for separating materials that cannot mix while still allowing water to drain.
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