Regenerative Systems Atlas
Explore the connected wastewater-to-regeneration system.
Eighteen research domains, each with three subtopics, linked by explained relationships. The domains are an editorial taxonomy, not performance ratings of any utility. Relationships are original synthesis. Related sources are shown for context and do not prove a relationship.
Directory of domains
The same 18 domains as a list. Works without hover or the graph.
Domain F / Processing
Digestion and energy
Anaerobic digestion can yield biogas and heat, and produces a digestate with its own options and limits.
Subtopics
- Anaerobic digestion. Assess conversion of organics to gas and digestate.
- Biogas and biomethane. Evaluate upgrading, useful energy demand and process emissions.
- Digestate and energy interfaces. Connect digestate characteristics and available heat to later processing.
Where a decision here travels
Domains reached by following the selected relationship types, by number of steps. Structural reach only; it does not show material flow or size of effect.
Downstream
- 1 step: ;
- 2 steps: ; ;
- 3 steps:
- 4 steps:
Upstream
Nothing mapped in this direction.
Feedback loops through this domain (0)
No closed loop passes through this domain in the register.
Relationships (3)
- Material flow
Anaerobic digestion to Digestate and energy interfaces: Anaerobic digestion produces gas and digestate streams.
Question raised: How does a change in F Digestion and energy alter the amount or character of what reaches F Digestion and energy?
Why connected? (R11)
- Basis: Established engineering or mathematical dependency
- Follows from a definition or balance that can be written as an equation or process definition. No citation is registered, so the statement is general engineering reasoning, not a sourced finding.
- What remains uncertain
- Which streams actually move, in what amounts and with what composition, depends on the facility. No quantities are asserted.
- Direct supporting evidence
- None registered.
- Qualifying or contradictory evidence
- None registered.
- Contextual references (do not establish this relationship)
Draft analysis (not reviewed)
Written to be checked, not relied on. No source supports it yet.
- 1. Relationship and direction
- Material flow: Anaerobic digestion (domain F) to Digestate and energy interfaces (domain F).
- 2. Proposed mechanism
- Anaerobic digestion converts part of the organic matter to biogas and leaves a digested solid and liquid, so it creates both an energy stream and a changed solids stream.
- 3. Why it matters
- Digestion changes both the energy options and the material to be managed.
- 4. What it could change
- Upstream: Feed composition and digester operation. Downstream: Gas use and digestate handling.
- 5. Source support
- None reviewed. 2 unchecked research leads are queued for review. Leads are not support.
- 6. Limits and alternatives
- Yield depends on feed, temperature and retention time.
- 7. What would settle it
- Gas production and digestate quantity and quality records.
- Dependency
Biogas and biomethane to Mass and energy balances: Available useful heat and gas integration affect energy balances.
Question raised: Which decisions in F Digestion and energy or N Engineering integration must be settled before the other can be treated as fixed?
Why connected? (R12)
- Basis: Established engineering or mathematical dependency
- Follows from a definition or balance that can be written as an equation or process definition. No citation is registered, so the statement is general engineering reasoning, not a sourced finding.
- What remains uncertain
- How strongly one side depends on the other depends on the site, the technology and the regulatory context. No magnitude is asserted.
- Direct supporting evidence
- None registered.
- Qualifying or contradictory evidence
- None registered.
- Contextual references (do not establish this relationship)
Draft analysis (not reviewed)
Written to be checked, not relied on. No source supports it yet.
- 1. Relationship and direction
- Dependency: Biogas and biomethane (domain F) to Mass and energy balances (domain N).
- 2. Proposed mechanism
- How biogas is used (heat, power or upgrading) changes the useful heat available and the energy needed elsewhere in the system.
- 3. Why it matters
- It determines whether on-site energy could support drying or thermal treatment.
- 4. What it could change
- Upstream: Gas yield and gas-use decisions. Downstream: Heat available for drying and net site energy.
- 5. Source support
- None reviewed. 3 unchecked research leads are queued for review; SRC-006 in the register may be relevant context. Leads are not support.
- 6. Limits and alternatives
- Conversion efficiencies and the energy needed to run equipment are not generalised.
- 7. What would settle it
- Metered gas and heat flows at the site.
- Constraint
Digestate and energy interfaces to Material conditioning and blending: Digestate suitability and quality determine conditioning options.
Question raised: Which limits in F Digestion and energy narrow what J Product formulation and quality assurance can do?
Why connected? (R13)
- Basis: Editorial systems synthesis
- Editorial systems synthesis supplied in the VRCRI relationship register. No source is registered as direct support, and none is registered as qualifying or contrary.
- What remains uncertain
- Which limits apply and what their values are depends on jurisdiction and site. No limit values are asserted.
- Direct supporting evidence
- None registered.
- Qualifying or contradictory evidence
- None registered.
- Contextual references (do not establish this relationship)
Draft analysis (not reviewed)
Written to be checked, not relied on. No source supports it yet.
- 1. Relationship and direction
- Constraint: Digestate and energy interfaces (domain F) to Material conditioning and blending (domain J).
- 2. Proposed mechanism
- The moisture, nutrient forms and contaminant profile of digestate constrain which conditioning or blending options can be considered.
- 3. Why it matters
- Not every digestate suits every product.
- 4. What it could change
- Upstream: Digestion operation. Downstream: Conditioning options and product specification.
- 5. Source support
- None reviewed. 3 unchecked research leads are queued for review; SRC-002 in the register may be relevant context. Leads are not support.
- 6. Limits and alternatives
- Suitability is set by measured quality and applicable rules, not by process type.
- 7. What would settle it
- Digestate analysis compared with intended product requirements.
Claim status: Interpretation. This is original synthesis, not measured data or a performance rating.