PFDs, P&IDs, and utility flow diagrams drafted to ISO, ISA, IEC, and ANSI standards for clear engineering communication
CFD, P&ID, SCADA and commissioning for critical water treatment plants.
Plant layouts, piping isometrics and construction-ready engineering drawings.
Flow, mixing and thermal CFD across treatment and process equipment.
Full mechanical, physico-chemical, biological and sludge equipment range.
Flow diagrams are the universal language of process engineering. From high-level Process Flow Diagrams (PFDs) to detaile
We manage discharge permit applications, amendments, and renewals. Environmental regulators trust our data and engineering credibility, speeding approvals.
Effluent sampling follows ISO and national standards. Third-party laboratory analysis provides defensible data for regulatory submissions and legal defence.
Continuous data logging, calibration records, and maintenance logs are organised for instant retrieval. Environmental audits become routine, not stressful events.
We design for 50-70% of the consent limit, not 100%. This safety margin absorbs process upsets, seasonal variation, and instrument drift without breach.
Performance guarantees with financial backing shift liability from your balance sheet to ours. Insurance and bonding protect against worst-case scenarios.
Design, fabrication, and commissioning follow ISO, EN, and industry-specific standards. Documentation packages satisfy due diligence for lenders and insurers.
The simplest representation showing major process blocks and overall material flow without equipment detail or control points.
High-level drawing showing major equipment, process lines, flow rates, temperatures, pressures, and key control loops.
The most detailed engineering drawing with all piping, valves, instruments, equipment, and control logic fully specified.
Stand-alone or overlay diagram showing service water, air, steam, and power distribution to process units.
Defines flow diagram types, equipment symbols, and piping representation for the chemical and petrochemical industry.
Instrumentation Symbols and Identification — the primary North American standard for instrument symbols and tag numbering.
European standard for P&ID representation, symbol conventions, and documentation rules in process engineering.
Graphic Symbols for Piping — comprehensive piping, valve, and fitting symbology used in the United States.
From PFD Overview to P&ID Detail
Rapid Mix
Slow Mix
UV / Chlorine
Storage
Finished Water
Shows major equipment names, design flow rates, and key temperatures. No individual valves or instruments.
Adds every pipeline, manual valve, control valve, and instrument tag. Includes loop numbers and I/O references.
FT = Flow Transmitter, pH = Analyser, LT = Level Transmitter, ΔP = Differential Pressure, AI = Analyser Indicator.
Backwash water, air scour, and chemical dosing lines would appear on the P&ID and UFD but often omitted from the PFD.
Liquid Train, Sludge Branch, and Recycle Loops
Raw Sewage
Settling Tank
UV / Chlorine
Discharge / Reuse
From Pri-Clar
From Sec-Clar
Gravity / DAF
Anaerobic / Aerobic
Cake / Disposal
Shows influent, screening, primary settling, biological stage, secondary settling, disinfection, and effluent with design flows and loads.
RAS (Return Activated Sludge) and internal recycle (nitrification-denitrification) appear on the P&ID but are often simplified on the PFD.
Primary sludge and waste activated sludge (WAS) are routed to thickening, digestion, and dewatering — shown fully on the P&ID and UFD.
Biogas from digesters and foul air from headworks require vent, flame arrestor, and odour-control lines detailed on the P&ID.
DO = Dissolved Oxygen, MLSS = Mixed Liquor Suspended Solids, SVI = Sludge Volume Index, WAS = Waste Activated Sludge, TIC = Temperature Indicating Controller.
P&IDs add blower air lines, chemical dosing (polymer, ferric), pump stations, valve manifolds, and interlock logic for the entire train.
Maintain consistency from BFD through PFD to P&ID so details align and can be traced across drawing sets.
Include dedicated symbol legends and line identification keys on every drawing issue.
Use systematic revision tables, clouding, and delta marks to communicate changes between issues.
Leverage standardised CAD blocks and 3D model libraries to eliminate symbol drift across projects.
diagrams delivered
global standards
compliant drawings
typical delivery
P&ID development for advanced biological treatment systems: activated sludge, SBR sequencing, MBBR media retention, anaerobic.
View PageP&ID development for DAF and flotation systems: saturator pressure control, air dissolution loops, recycle pumps, flotation cell.
View PageHAZOP and process hazard analysis for critical water treatment processes plants.
View PageProcess flow diagram development for critical water treatment processes systems.
View PageOur engineering team creates ISO, ISA, and ANSI compliant PFDs, P&IDs, and utility flow diagrams tailored to your water treatment project.
Our expertise spans multiple industries with sector-specific water treatment solutions.
Send your influent analysis and our engineers assess your process and recommend a tailored treatment solution — free, confidential and no obligation.
Select the regulatory standard for your country — it sets which parameters we need for a compliance-aware process assessment.
Required parameters for the chosen standard are flagged on the sample form. You can still submit a partial set and we will advise what else to test.
Your sample is stored against your company so we can track the project. Provide a company name or email as a minimum.