EnWater Design

Advisory stream Process & Treatment Systems

Process & Treatment Systems

Once the treatment route is confirmed, it must be converted into a defined process and system scope. We develop the design basis, process sizing, equipment duties, system boundaries and performance requirements needed for coordinated design, procurement and delivery.

Design basis & sizing System coordination Supplier-ready requirements Performance & acceptance

Overview

A confirmed treatment route is not yet a design scope. We develop the balances, sizing criteria, equipment duties, coordination requirements and acceptance basis needed to progress into engineering and supplier engagement.

Typical outputs include process design criteria, mass and water balances, process flow diagrams, equipment duty specifications, boundary and utility schedules, control requirements, and commissioning acceptance criteria.

How it works

From confirmed route to defined design scope

A confirmed route still requires documented design assumptions, operating cases, system boundaries and performance requirements. We convert it into a coordinated process scope with defined balances, sizing criteria, equipment duties, system connections and acceptance requirements.

Design basis & process sizing

Establish flows, loads, balances, operating cases, design margins and equipment duties for the required process conditions.

System boundaries & coordination

Define the process, utility, civil, electrical and control requirements that connect each package to the wider system.

Design documentation & acceptance

Process flow diagrams, balances and equipment duties defined at the agreed design level.
Package boundaries, utility requirements and layout provisions recorded for coordination.
Performance criteria, commissioning checks and required evidence set out for acceptance.

Typical triggers

  • A confirmed route must be developed into a defined process scope before procurement.
  • Different suppliers are working from different design assumptions or equipment duties.
  • System boundaries, utilities or control requirements are not sufficiently defined.
  • Commissioning and acceptance requirements need to be established before purchase.

Outputs for the next project stage

  • Design basis: operating cases, balances, sizing criteria, margins and equipment duties.
  • Boundary and coordination register: process, utility, civil, electrical and control requirements.
  • Process documents and acceptance basis: required drawings, specifications and commissioning checks.

Services & Capabilities

We develop confirmed treatment routes into coordinated process and system scopes. The work covers design criteria, process sizing, equipment duties, system boundaries, documentation requirements and the performance basis for procurement and delivery.

Design scopes & system requirements

Each scope applies the design process to a different system duty. Select a system to see the design basis, coordination requirements and performance criteria we define.

Tip: select a system to see what we define.

What we define

Liquid-process design

Develop the confirmed liquid-treatment route into a coordinated design basis with defined balances, sizing criteria, equipment duties and operating requirements.

Mass, water and solids balances across normal, peak and future operating cases.
Hydraulic profile, process sizing criteria and operating ranges for each treatment function.
Equipment duties, materials requirements, utility loads and control needs.
Redundancy, bypass, failure conditions, access and maintainability provisions.

Typical design outputs

These examples show how a confirmed treatment route is developed into defined process and system outputs for the next project stage.

Typical output

Design basis & sizing criteria

Establish the operating cases, balances, sizing criteria and design margins needed to define each process duty.

  • Normal, minimum, peak, upset and future operating cases
  • Mass, water and solids balances
  • Hydraulic and process sizing criteria
  • Equipment duties, redundancy and operating margins

Typical output

Boundary & coordination register

Define how process packages connect to utilities, civil works, electrical systems, controls and the wider site.

  • Process and package boundaries
  • Utility loads and connection requirements
  • Layout, access, drainage and civil provisions
  • Instrumentation and control connections

Typical output

Process documents & equipment requirements

Prepare the process information and equipment requirements needed at the agreed level of design definition.

  • Process flow diagrams and balances
  • Equipment duties and datasheets
  • Materials, access and maintainability requirements
  • Process-control and operating intent

Typical output

Performance & acceptance basis

Define the operating ranges, performance requirements, commissioning checks and evidence needed for acceptance.

  • Required operating and performance ranges
  • Commissioning and functional checks
  • Sampling, trends and recorded evidence
  • Acceptance and technical completion requirements

Tip: swipe/scroll to browse. Use these as starting points, scope is tailored to the scheme and procurement context.

Get in touch about your process scope

If you have a confirmed treatment route, the next step is to develop it into a defined process and system scope. We can establish the design criteria, balances, equipment duties, system boundaries, control requirements and acceptance basis needed for the next project stage.

Helpful inputsConfirmed treatment route, available flow and load data, source-quality information, existing reports or drawings, known site constraints and the intended project stage.
If relevantExisting equipment, package boundaries, utility constraints, phasing requirements, commissioning milestones and any specific design outputs already requested.
Quick enquiry

Common design gaps

Recurring gaps that affect process definition, system coordination and acceptance.

Incomplete design basis leads to inconsistent equipment duties

When flows, loads, operating cases and margins are not documented, equipment can be sized against different assumptions and package requirements begin to diverge. Establish the design basis, balances and equipment duties before detailed selection or procurement.

Undefined system boundaries create coordination gaps

Process packages cannot be integrated reliably when utility, civil, electrical, control and access requirements are left implicit. Record package boundaries and connection requirements so each discipline and supplier works from the same basis.

Unclear acceptance requirements delay completion

When operating ranges, commissioning checks and required evidence are not agreed early, performance can be interpreted differently during final verification. Define the performance and acceptance basis as part of the design scope.