Decision study types
Time-bound studies that move one project decision at a time - from early screening and retrofit through chemistry, reuse, sludge, ZLD,
markets, automation, and delivery. Available independently or embedded within wider project work.
Built on FlowPlan diagnostics
Vendor-ready outputs
Selectable depth
Early-stage / EIA support
Early-stage water & impact screening study
A compact study that gives EIA and masterplanning teams a well-supported view of water use, quality ranges, indicative treatment limit,
footprint and energy - before anything is over-designed.
Typical duration · 2 - 3 weeks
Covers
demand & consumption patterns, indicative influent/effluent ranges, rough treatment route concepts, space and basic energy intensity.
Moves the decision on
realistic capacities, planning assumptions for EIA, and first budget and footprint ranges to carry into approvals.
Supports: Environmental Impact Assessment teams
Output: Water & impact screening note
Catchment-level
Catchment improvement & source pretreatment study
Study the catchment, locate and track problem sources, and define pretreatment at those sources before locking the plant design basis.
Modes
Quick
Full
+ Workshops
Quick · 2 - 3 weeks
- desk-based mapping, light sampling plan, residual design basis sketch.
Full · 4 - 6 weeks
- detailed flow/load scenarios, tracked hotspots, pretreatment briefs per associate.
+ Workshops
- joint sessions with key associates to agree commitments and timelines.
Diagnostics: Source Control & Pretreatment
Output: Catchment map & residual design basis
Pretreatment / chemistry
Chemical optimisation & co-treatment study
Choose and tune the chemical route and co-treatment scheme so pretreatment is efficient and downstream modules are protected.
Modes
Quick
Full
+ Workshops
Quick · 2 - 3 weeks
- jar-tests or vendor data review, indicative dosing ranges, preliminary cost limit.
Full · 4 - 5 weeks
- structured test plan, co-treatment map, preferred chemical treatment route and operating range.
+ Workshops
- adds operator/vendor sessions for handling, safety and changeover.
Diagnostics: Industrial Effluent & Batch+
Output: Chemical treatment route & co-treatment map
Equipment selection
Equipment selection & integration
A focused service to help you choose the right screens, filters, clarifiers or dewatering units - and integrate them safely into the
existing process, hydraulics and footprint.
Modes
Quick
Full
+ Workshops
Quick · 2 - 3 weeks
- shortlist of suitable equipment for the duty, plus indicative sizing and duty point checks.
Full · 4 - 6 weeks
- hydraulic and layout checks, connections to upstream/downstream units, and integration notes for FlowPlan - Equipment+ or STP/ETP routes.
+ Workshops
- joint sessions with operations and vendors to align on install, bypass, isolation and startup conditions.
Moves the decision on
which equipment to buy and how it will fit in the line - reducing re-work, clashes and “trial-and-error” installation.
Services: Equipment selection & integration
Modules: FlowPlan - Equipment+
Technology route
Technology route & concept options study
Compare alternative treatment routes and FlowPlan module sets at concept stage - so you set a credible path before specs and vendors are frozen.
Typical duration · 3 - 4 weeks
Covers
module combinations (e.g. FlowPlan - MBBR+ + FlowPlan - Clari+ + FlowPlan - Micra+), footprint, complexity, operator load, vendor landscape and risk.
Moves the decision on
which concept route to take forward as the “base case” for design, economics and vendor engagement.
Diagnostics: Plant retrofit / quality snapshot
Output: Concept options & preferred route
Market & offtake
TSE & biosolids market approach study
Define practical market approaches for TSE and biosolids - who can use them, at what reliability and quality, and under what commercial and risk-sharing structures.
Typical duration · 3 - 4 weeks
Covers
potential TSE users (cooling, landscaping, industry), biosolids product options, volume & reliability ranges,
pricing signals, risk allocation and simple contract models.
Moves the decision on
which TSE and biosolids markets to prioritise now, what quality classes to design for, and what offtake or tariff structures to carry into the project.
Diagnostics: TSE Use & Reuse Risk
Diagnostics: Residuals & Biosolids Planning
Output: Offtake map & contract concepts
Sludge & biosolids
Sludge & biosolids route study
Decide between dewatering-only, drying, compost, organo-mineral or biofertiliser routes and target product classes.
Typical duration · 3 - 4 weeks
Moves the decision on
preferred pathway, market positioning and FlowPlan - Sludge+ variant to carry forward into design and vendor scoping.
Diagnostics: Residuals & Biosolids Planning
Diagnostics: Biofertilizer ESG Matchmaking
ZLD & brine
ZLD & brine route study
Decide whether ZLD is required or viable, and if so, which route and assumptions should set out the solution.
Typical duration · 3 - 4 weeks
Moves the decision on
ZLD vs partial-ZLD, and key design and commercial assumptions for FlowPlan - ZLD+ and related modules.
Diagnostics: ZLD Preparation & Brine
Modules: FlowPlan - ZLD+ · FlowPlan - ZLD+Prep
Odor, septicity & H₂S
Odor, septicity & H₂S control study
Map where odor and H₂S are forming across the catchment and plant, and decide a staged mix of capture, dosing and polishing - with the minimum monitoring and controls to keep it stable.
Typical duration · 2 - 3 weeks
Covers
sewer / rising main septicity, wet wells & headworks, tanks, buildings and biosolids handling.
Moves the decision on
where to intervene (catchment vs plant), how much to dose, what to capture and polish, and what monitoring is “enough”.
Diagnostics: Odor & Hazard
Modules: Odor+Capture Odor+Dose Odor+Polish
Automation conversion
Automation conversion & controls upgrade
A service to convert the plant from mostly manual routines to a clearer level of automation and remote monitoring - in stages that fit
your budget and operations team.
Typical duration · 3 - 4 weeks
Covers
current loops and instruments, what must be automated, alarm and interlock logic, SCADA/telemetry options and a staged conversion roadmap.
Moves the decision on
which units to convert in this phase, what additional signals are needed, and how to prepare for remote or centralised supervision.
Services: Controls & automation conversion
Output: Conversion steps & control note
Procurement support
Procurement support & vendor evaluation
A practical buying support service - turning your technical needs into clear RFQs, comparison frames and recommendations so selecting vendors
and equipment becomes easier and less risky.
Typical duration · 3 - 4 weeks
Covers
RFQ and ToR drafting, minimum technical requirements, comparison tables, scoring criteria and clarification questions for shortlisted vendors.
Moves the decision on
which vendor or package to award, on what technical and commercial basis, and what must be captured in contracts to protect performance.
Services: Procurement & evaluations
Diagnostics: Vendor / technology evaluation
12. ROI, savings & commercial limit
Economics & savings
ROI & cost - benefit analysis study
Turn technical options into a board-ready view of cost-to-serve, savings and risk - so you can justify the project and choose the right ambition level.
Typical duration · 3 - 4 weeks
Covers
baseline cost-to-serve, with-project CAPEX/OPEX, avoided disposal and discharge, reuse value, chemical/energy shifts and simple tariff or fee structures across scenarios.
Moves the decision on
technical and commercial viability, realistic ROI and payback ranges, and which level of reuse or recovery ambition is justified for this project phase.
Focus: Business case & ROI
Output: Board snapshot & scenario ranges