Turn Wastewaster Into Clean Water And Biogas

​Sharp’s Brewery

Sharp’s Brewery was founded in 1994 in Rock, Cornwall when enterprising brewer Bill Sharp set out on a mission: to make exceptional quality beer on the North Cornish Cost. With a small microbrew plant and an ambition to brew 500 pints per week to pay the mortgage, Sharp’s beer was born. Brewed with time honored brewing techniques and quality ingredients, the beer developed a signature style that continues to this day.

The background

TM-UASB wastewater treatment plant; becoming the first brewery in the South West of the United Kingdom to use this form of technology. Nijhuis was appointed as principal contractor. The system has been designed to treat average crude influent strengths of 8.750 mg/l COD and a volume of 300 m³/day.

  • Sharps-Brewery
  • Installation-Facts

Installation facts

  • Customer: Sharps brewery
  • Industry: Brewery
  • Location: Rock, Cornwall, UK
  • Flow rate: 300 m3/d

Nijhuis delivery

  • Contract type: Design, build, operate, maintain
  • Added value services: Design, project management and engineering, manufacturing, delivery, installation and commissioning
  • Solution: Filter, flocculation-flotation, anaerobic UASB treatment plant, flash aeration
  • Intelligent services: service contract
  • Start date: 2013
  • Delivery 1
  • Solution


The wastewater from the brewery undergoes a four stage treatment process, started with a curved screen, type NZB, to recover spent grains. The next technology, flocculation-flotation (DAF), provides basic treatment to the wastewater when the AECOMIXTM-UASB is taken off line for routine maintenance. Additionally, suspended solids are removed before the AECOMIXTM-UASB in order to improve performance and minimise risk of problems due to solids build up in the UASB.

The AECOMIXTM-UASB uses anaerobic processes whilst forming a blanket of granular sludge which suspends in the tank. The wastewater flows up through the blanket and is processed by the anaerobic microorganisms. Biogas with a high concentration of methane is produced as a by-product. A flash aeration is installed to remove excess H2S gas prior to discharge to the sewer.

Customer benefits

  1. Reducing liquid waste being sent to the local water treatment plant by 80%.
  2. Expansion of production capacity.
  3. Lower environmental footprint.
  4. Turn wastewater into biogas to provide heat and power at the site.
  5. Nijhuis application knowledge.
  • Benefits