---
title: Download the Bolton WWTP Case Study
description: Developed with a focus on health and safety, the new Hydrotech Confidence Series of filters provide reliable performance and predictable operating costs.
---

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Case Study

# Intensifying nutrient removal at Bolton WWTW without new civil works

Download the full case study to see the proven results, review the process flow diagram, and learn how you can achieve a zero-construction upgrade for your own facility.

![ZeeLung installation 1](https://info.veoliawatertechnologies.be/hs-fs/hubfs/EU_TDS_Municipal%20Campaigns/Bio%20Intensification%202026/ZeeLung%20installation%201.jpg?width=845&height=864&name=ZeeLung%20installation%201.jpg)

### In this Case Study

See how, by implementing ZeeLung\* MABR with zeeDENSE\* technologies, Veolia helped United Utilities at the Bolton wastewater treatment works:

- expand biological capacity by 15%
- augment nitrification by 800 kgN-NH4+/d
- improve sludge settleability
- reduce aeration energy consumption

Supporting the utility's carbon-neutrality goals, we secured their future regulatory compliance and plant resilience while completely bypassing the need for expensive new civil works.

 

 

*\*Trademark of Veolia; may be registered in one or more countries *

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