Waste Water pH Correction

Effective pH correction is essential to protect downstream treatment processes, meet discharge consents and optimise chemical consumption in wastewater plants. Rospen designs and supplies complete powder handling and dosing systems that accurately add alkalinity agents for pH control, from small works to large treatment facilities.

From Sacks and Big Bags to Bulk Silos

Wastewater treatment sites use a range of alkaline powders such as sodium bicarbonate or lime to stabilise pH and support other treatment steps. Rospen provides flexible systems to handle these materials in whatever delivery format your site requires.

• Equipment for unpacking and dosing alkalinity powders from 25 kg sacks, 1,000 kg FIBCs (big bags) or bulk storage silos up to around 50,000 kg.
• Engineered solutions that optimise powder storage, flow and conditioning to maintain a reliable supply to dosing equipment.
• Configurations tailored to new plants or retrofits, integrating with existing tanks, contact chambers and control systems.

Stable, Responsive pH Control

Regular pH adjustment requires accurate, repeatable dosing proportional to actual flow and load. The high accuracy of Rospen’s feeders and controls helps operators maintain stable pH with reduced chemical use.

• Loss in weight screw feeders and other gravimetric feed systems to provide controlled additions of powder to make up tanks or directly into the wastewater streams.
• Dosing systems with high turndown tolerance, capable of sustaining diurnal fluctuations in flows and different influent chemistry.
• Connection to the site PLC/SCADA to automatically control pH, flow or other process indicators, and the data can be reported and optimised.

Reliable Operation Over the Long Term

Water companies and their delivery partners require dosing equipment that can operate continuously with high availability and minimal intervention. Rospen’s systems for the water and wastewater sector are designed to meet demanding process and operational requirements.

• Technically robust equipment sized and configured for the environment, helping maintain high dosing accuracy over the equipment’s lifetime.
• Designs that support safe operator access, straightforward inspection and practical routine maintenance.
• Proven performance across a range of treatment plant sizes, from smaller sites to major works operated by leading UK water companies.

Trusted Partner for Wastewater Projects

Rospen has provided powder dosing systems for water and wastewater schemes in the UK in several AMP investment periods. Our experience enables us to provide effective pH correction solutions that meet industry standards and delivery frameworks.

• Track record delivering alkalinity dosing systems for wastewater treatment schemes with major utilities and their design‑and‑build partners.
• Project delivery that combines mechanical equipment, controls and documentation to satisfy process, operational and regulatory expectations.
• Ability to support feasibility, detailed design, factory testing and site commissioning as part of wider treatment upgrades.