After various lab tests and trials which included CO2 dosing, we designed a process to pH balance using a bespoke blended organic coagulant/flocculant, utilised Venturi aeration, chemical oxygenation and tertiary 20micron filtration and finally using naturally formed bacteria digestion for COD management in the final unit.

The automation designed into the system made operation of the whole plant simple and non-intrusive for staff. Screens managed the bacterial growth with self-cleaning plates and the chemical levels were managed with up loading reports directly to the approved supplier, meaning stock levels never ran low but avoided over stocking.

Utilising our expertise in chemical wastewater treatment design, and our bespoke chemical blending experience, we were able to neutralise the pH to around 7, and reduce the COD down to <100mg/l, solids to <25mg/l and clarity reading to around 1-2 for turbidity, similar to drinking water quality.

1. The site could now could discharge to watercourse instead of using road haulage. Based on their average daily flow from the tunnelling process, their saving was around £7,500.00 per day on average.
2. Lucrative ROI from the system as the CAPEX for this temporary system was around £49,500.00. This meant the plant had paid for itself through haulage savings in less than seven days.
3. The bespoke chemical blend and wastewater treatment plant tailored to this site’s wastewater provided a high-quality treated water which helped bolster the site’s compliance and protect the local environment by producing a cleaner treated wastewater for discharge to river.
4. Through our knowledge of chemicals and using organic acids and polymers, we produced a harmless water that added nutrients and other organic matter to aid bacterial growth and supplement local foods in the river to aid wildlife growth.
5. Energy consumption was low as we utilised hydrostatic loading and low energy pumps. The whole system could be operated from a solar panel set up with a set of batteries, meaning the system could be used in isolation in remote sites.