UK HQ Your time

Stage 1 — Process Design & P&IDs

Process design converts characterised influent and discharge requirements into a defined treatment train. It is the stage where performance, footprint and operating requirement are fixed, so it is engineered from first principles rather than templated.

What the Process Design Stage Delivers

Influent Characterisation

Sampling and analysis establish the design basis: flow profile, BOD/COD, solids, nutrients, pH, temperature and any priority pollutants that govern the train.

Treatability & Bench Studies

Where the matrix is novel, jar tests and bench trials confirm coagulant demand, biological treatability and achievable effluent quality before commitment.

Mass & Water Balance

A full mass and water balance fixes loadings on every unit, sludge production and recycle streams, underpinning equipment sizing.

Defining the Treatment Train

Unit-Process Selection

Screening, DAF, biological, membrane and dewatering stages are selected and sequenced against the design basis and site constraints.

Equipment Sizing

Each unit is sized to design and peak loadings with appropriate redundancy, setting hydraulic and process margins.

P&ID Development

Piping and instrumentation diagrams capture the process, instrumentation and control philosophy that the later stages build upon.

Process Design Outputs

Design Basis Report

A documented design basis, assumptions and guarantees that anchor the project.

Process Flow Diagrams & P&IDs

PFDs and P&IDs defining streams, equipment and control loops.

Equipment Schedule

A sized equipment list and duty schedule feeding detailed engineering and procurement.

Planning a turnkey treatment plant?

Reynolds & Bauhm delivers this scope as part of an integrated, single-point engagement matched to your project, programme and regulatory regime.

Industries We Serve

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