UK HQ Your time

Slaughterhouse Anaerobic Pre-Treatment

Reynolds & Bauhm was engaged to assess an abattoir's load and proposed a covered anaerobic lagoon with biogas capture ahead of aerobic polishing.

88%
COD Removal
Biogas
Captured
Odour
Controlled

The Challenge

A slaughterhouse produced very high-strength, fatty effluent with strong odour potential, overloading its aerobic plant and drawing complaints.

For meat processing operators, a challenge of this kind translates straight into cost and risk — higher chemical and energy use, lost capacity, a heavier maintenance burden and, ultimately, the threat of a discharge-consent breach. The reliable route is to measure the actual stream first, understand what is really driving the problem, and only then select and size the treatment. That diagnostic discipline is where Reynolds & Bauhm began this engagement.

The Proposed Solution

Reynolds & Bauhm was engaged as the consulting engineer on this project. Working alongside the site team, we characterised the stream and proposed a solution sized to the measured duty rather than a catalogue specification. The recommended approach combined several coordinated measures:

  • Fat trap and DAF proposed for FOG removal upfront
  • Covered anaerobic lagoon/UASB for high-rate COD removal
  • Biogas capture and flare/CHP for the captured methane
  • Aerobic polishing and disinfection before discharge

Advisory engagement

Reynolds & Bauhm acted in an advisory capacity — assessing the problem and proposing and sizing the solution. This is a representative scenario showing how we approach a meat processing challenge of this type; figures are typical of the technology proposed, and every project is validated against your own data.

How the Solution Was Scoped

Each stage was selected against the stream analysis and sized with a sensible design margin, then set out as a process flow diagram and functional design specification for the client to take forward. Reynolds & Bauhm defined the duty, the equipment selection and the control philosophy, and identified the interface and performance risks to resolve before implementation. The proposal included a commissioning and validation plan — instrument calibration, control-loop tuning against live conditions, operator training and O&M documentation — so that, once built by the project team, the plant could meet its targets from start-up and stay there.

Expected Outcome

ParameterBeforeAfter (target)
COD removal60%88%
Aeration energybaseline−50%
Odour complaintsfrequentnone

Beyond the headline figures, the proposed approach targets reliable, repeatable compliance and a measurable reduction in operating cost — the combination that justifies the investment and protects the site against tightening regulation.

Why This Approach Works

Diagnose before designing

The proposed train is built around a real stream analysis, not an assumption — the single biggest determinant of whether a meat processing plant succeeds.

Right technology for the duty

Each stage earns its place against the measured load, avoiding both under-treatment and the cost of over-engineering.

Validated & documented

A commissioning and validation plan means the result is provable and auditable, not just claimed.

Transferable

The same engineering approach transfers to comparable meat processing sites with similar duties.

Related Case Studies & Pages

Have a similar challenge?

Reynolds & Bauhm can assess feasibility and propose a validated, sized solution for your meat processing application. Send us your flow, stream analysis and target consent and we will scope the treatment train, size it and set out the options.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.