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FlowPlan › Reuse Planning

Reuse Planning

Reuse Planning uses targeted diagnostics to confirm whether an intended water, biosolids, industrial recovery or source-control route is workable, what conditions govern it, and what must be measured and verified. The work can begin wherever the planning question is already defined.

Overview

Reuse Planning brings together the water, residuals, brine and source conditions that determine whether an intended route can perform reliably. A scope may focus on one category or combine several: end-use quality and assurance, biosolids handling and outlet requirements, industrial recovery and brine management, or septicity, odor and incoming contamination. The relevant diagnostics are selected according to the decision being made, the information available and the constraints affecting the project.

From planning questions to defined requirements

The four planning categories address different but connected questions. An engagement can use the parts needed to confirm the planning and risk basis, define the response pathway, and establish measurable scope and verification requirements. They are not a required sequence.

Connected parts of the scope
  • Confirm the intended outcome, application or outlet, user and access conditions, demand pattern, seasonal or operating variation, and the governing quality or product requirement.
  • Define reliability and continuity needs, including storage, distribution, pressure and cross-connection conditions for water reuse, or handling and logistics conditions for biosolids and brine routes.
  • Select the diagnostics that address the decision, available information, identified gaps and approval requirements.
  • Define site and operating constraints, operator responsibilities and the evidence required through sampling, KPIs, monitoring and commissioning checks.
  • Characterise source flow, quality, loads, variability and gaps in the available data.
  • Compare the source against the intended end use, product or outlet requirement and identify the treatment, disinfection, processing or conditioning barriers needed.
  • Define redundancy, buffering, bypass prevention, fail-safe controls and response actions where reliability or contamination risk is critical.
  • Connect the findings to relevant FlowPlan modules, system connections, control intent and monitoring positions without fixing equipment prematurely.
  • Set monitoring locations, parameters, frequencies, alarms and response actions.
  • Define commissioning checks, performance criteria, acceptance evidence and sampling needed to confirm the intended outcome.
  • Clarify operating responsibilities, maintenance needs, sampling, recordkeeping and documentation requirements.
  • Prepare a scope and verification basis that can support design development, supplier comparison, implementation or operating review as required.

Planning Diagnostics

Select a planning category and review the relevant diagnostics used to define the planning basis, scope, monitoring needs and verification requirements.

Diagnostic selection

Reuse & Water Planning

Define end-use and assurance requirements Identify conditions affecting the route Set monitoring and verification needs
6 tools

Sludge & Biosolids

Quantify biosolids volumes and handling needs Assess the required biosolids class and outlet route Define processing, QA and logistics requirements
6 tools

Industrial & ZLD Diagnostics

Characterise feeds and variability Define pretreatment requirements for UF, RO or thermal stages Assess brine concentration and solids handling requirements
6 tools

Septicity, Odor & Hazard Diagnostics

Identify upstream contamination affecting reuse feed quality Assess septicity and runoff variability that guide pretreatment needs Define monitoring triggers that protect the reuse scheme
4 tools
Diagnostic review
Selected diagnostic

Energy Recovery Screening

View diagnostic ↗︎

Screens solids degradability and energy yield to confirm whether digestion or co-digestion adds value.

Key questions
  • • How much organic content (VS) is present, how degradable is it, and is digestion likely to recover meaningful energy or mainly provide stabilisation?
  • • Is co-digestion with a higher-strength organic stream needed to justify the capital, and is a suitable feedstock available?
  • • What heat and energy balance results from digestion, and does it offset enough operating cost to change the route decision?
Inputs we request
  • • Sludge TS, VS, and origin (primary, secondary, or mixed) with any seasonal variation data.
  • • Current energy costs, heat demand on site, and any co-substrate streams available.
  • • Current dewatering and drying configuration, and whether Incineration+ is in scope for the site.
Diagnostic outcome: A digestion suitability call, covering biogas yield estimate, heat and energy balance, and whether the route adds value or mainly adds complexity.
Planning basis & scope
Planning output

Reuse Planning

Full diagnostic library ↓
Relevant FlowPlan modules
Sludge+DewaterThermo+Incineration+
Planning outputs
  • • Biogas yield estimate and digestion suitability check.
  • • Heat/energy balance implications (incl. Thermo+Sludge integration).
  • • Key inputs for the digestion design basis: monitoring points, commissioning checks, and integration requirements.
Related action: Get in touch to discuss how the Energy Recovery Screening findings can support the required scope and verification plan.

Planning Diagnostics & FlowPlan Linkages

Review each diagnostic in detail, including the planning question it addresses, the planning output it supports and the relevant FlowPlan modules.

Reuse & Water Planning

These diagnostics assess end-use suitability, user and access conditions, demand pattern, water-quality variability, health and operating risks, required treatment and disinfection barriers, storage and distribution conditions, approvals, monitoring and operating responsibilities. They can support a new project, an existing design or an operating system. The findings establish the reuse planning basis and identify the FlowPlan modules and verification requirements relevant to the intended application.

TSE Use Feasibility

Checks whether the intended end use can be supported by the treated water available, covering exposure risk, demand pattern, reliability, storage, distribution and the treatment and monitoring level needed for the selected application.

Water Quality Snapshot

Builds a design usable picture of the water, covering key parameters, variability, and data gaps so early reuse or treatment decisions are not based on partial sampling.

Reuse Risk Assessment

Clarifies the health and operating risks tied to the intended reuse application, so barrier needs, monitoring and the required level of control are defined against the intended end use.

Reuse Route Definition

Defines a practical treatment and monitoring route for the intended application, linking the required reuse class, health-protection needs, treatment and disinfection barriers, storage, distribution, control and verification requirements.

Compliance & Approval Readiness

Clarifies the approval route, operating limits, submission requirements, monitoring records and performance checks needed to support the reuse or discharge route.

Source Water Characterization

Builds a usable picture of inlet quality, variability, and flow behaviour, so treatment choices respond to plant conditions rather than one-off samples.

Sludge & Biosolids

These diagnostics assess biosolids quantity and condition, pathogen and contaminant risks, processing needs, outlet requirements and resource-recovery potential. The findings define the required biosolids class or product specification, the handling and QA requirements, and the module families relevant to the selected route.

Biosolids Planning

Quantifies biosolids volumes, solids content, stabilisation status and handling constraints, then assesses processing and outlet routes such as dewatering, drying, composting or thermal treatment. The result defines footprint, logistics, QA points and downstream requirements.

Biosolids Product Viability & Market Fit

Assesses whether the material is better routed to compost, biofertilizer or an organo-mineral product, and what processing, compliance and buyer requirements apply to each option.

Pathogen & Contaminant Assessment

Checks whether pathogen and contaminant levels support the intended biosolids class or product route, and what processing and QA controls are required.

Heavy Metals & Toxics Screening

Shows whether metals or toxic compounds narrow land application and product routes, call for tighter source control and batch checks, or push the material away from reuse toward a thermal route.

Energy Recovery Screening

Tests whether the sludge has enough degradable organic content to justify digestion or co digestion, using VS, sludge origin, and heat energy balance to show whether recovery adds value or whether the route is mainly about stabilisation.

Phosphorus Recovery Potential

Assesses whether phosphorus concentration and mass balance justify recovery, and which route fits the stream, direct biosolids use, liquid phase recovery, or ash based recovery after incineration, with contaminant limits, product quality, and market fit checked at the same time.

Industrial & ZLD Diagnostics

These diagnostics assess feed composition and variability, hazardous loads, pretreatment compatibility, recovery limits, brine routing and discharge requirements. The findings establish the operating range, protection requirements and module implications for industrial recovery, membrane or thermal duties.

Industrial Effluent Characterization

Builds the industrial feed picture across shifts, batches, and cleaning cycles so pretreatment, ZLD readiness, and membrane duty are set on plant behaviour, not averages.

ZLD Preparation

Tests whether the feed can be prepared for concentration without fouling or scaling the system, and what pretreatment and recovery approach makes the ZLD route workable.

Brine Routing

Works through how reject brine and resulting solids are concentrated, separated, and handled, so evaporator choice, crystallizer need, and solids management are thought through together.

Industrial Hazardous Load Screening

Identifies hazardous chemical loads that affect treatment selection, containment needs, operator protection and the reuse or discharge route that can be supported.

Pretreatment Compatibility

Checks whether the upstream chemistry is fit to protect UF, RO, or thermal stages, and where extra conditioning is needed to avoid scaling, fouling, or unstable operation.

Sewer Discharge Compliance

Defines the pretreatment steps, monitoring points, and paperwork needed to keep trade effluent discharge within permit limits and reduce compliance risk.

Septicity, Odor & Hazard Diagnostics

These diagnostics assess incoming contamination, septic conditions, first-flush variability and return-stream loads that affect feed quality, safety and treatment performance. The findings define source controls, pretreatment needs, monitoring triggers and the FlowPlan modules relevant to the identified conditions.

Connecting Sewer Pollution Mapping

Tracks where upstream contamination enters the catchment so the reuse scheme is based on confirmed inputs and the required control points are identified.

Stormwater / Urban Runoff Risks

Builds a clearer view of runoff quality and first-flush behaviour so storage, pretreatment, and reuse expectations reflect what arrives during wet-weather events.

Sewer Septicity & Odor Risk

Identifies where septicity and H₂S are likely to develop, what that means for feed quality and safety, and whether source control, dosing, capture or polishing need to be included in the scope.

Return Stream & Recycle Profiling

Shows how centrate, filtrate, backwash, and other return streams alter the inlet load, and where recycle, sidestream treatment, or separate handling would improve recovery.

Get in touch

Share the decision being considered, the information available and the constraints affecting the project or operating system. We will identify the diagnostics relevant to the question and clarify the scope, monitoring needs and performance checks that should be defined.

  • Main issue and where it shows up (reuse, biosolids, ZLD, odor or septicity, or catchment conditions).
  • Location context (site process unit, headworks, or connecting and branch sewer links before the main trunk).
  • The decision to be made (intervention shortlist, monitoring design, vendor engagement, or performance targets).
  • Main constraints (space, power or heat, shutdown periods, operator capacity, and access).
  • What needs to be checked (sampling plan, indicators, alarms, commissioning checks, and performance KPIs).

Select the area most relevant to your current stage and we will respond with the appropriate planning approach.

After submission, you will be taken to a confirmation page.