- ✅ Product Name: Ergon Bio Collection Tank - *Anaerobic Bacterial Digestion
- ✅ Manufacturer: *Ergon INC ( *Click Link )
- ✅ Bio Tank Variants : *Budget Series Bio Collection Tank & *Elite Series Bio Collection Tank Category: Preliminarily Wastewater & biological treatment of sewage Pre-Treatment Chamber Application: Domestic, Commercial, Institutional & Industrial Wastewater Management.
1. System Overview
The Ergon Bio Collection Tank is the first and critical stage in an integrated onsite wastewater treatment system. It acts as the primary reception chamber that:
Collects raw sewage and wastewater from toilets, showers, kitchen drains, and wash areas.
Initiates biological decomposition of organic waste through microbial action.
Provides a controlled environment for settling and digestion of solids before effluent moves into subsequent treatment stages (e.g., Bio Tank and Evaporation Tank).
Unlike conventional septic tanks that primarily rely on storage and passive settling, the Bio Collection Tank is engineered to begin biological organic breakdown immediately, minimizing sludge formation and odor generation.
2. Purpose & Functional Role
The Bio Collection Tank serves three principal functions:
a. Wastewater Reception
All wastewater and sewage from household or commercial plumbing drains are directed into this tank. It acts as the first point of contact for wastewater in the entire treatment system.
b. Primary Biological Digestion
Beneficial anaerobic bacteria begin degrading organic solids and waste immediately upon entry. This reduces the load of solids, lowers biochemical oxygen demand (BOD), and stabilizes waste before further treatment.
c. Settling of Solids
The tank is designed with settling compartments that allow heavy particles to settle to the bottom, while lighter liquids remain on top and proceed to the next stage. This separation is key to better downstream treatment efficiency.
3. Working Mechanism — Biological & Physical Processes
The treatment in the Bio Collection Tank involves natural microbial metabolism and physical settling:
a. Inflow & Mixing
Raw wastewater enters through an inlet pipe designed to prevent backflow and ensure smooth distribution.
b. Sedimentation
Suspended solids begin to settle at the bottom due to gravity. This settling creates zones of varying density — with heavier organic solids at the base.
c. Anaerobic Digestion
Anaerobic bacteria (microorganisms that thrive without oxygen) break down the settled organic matter. This produces:
Carbon dioxide (CO₂)
Methane (CH₄)
Water (H₂O)
Stabilized biomass
This process is similar to established biodigester technology used in advanced onsite systems.
d. Effluent Transfer
Partially treated liquid effluent — with reduced solids and organic load — flows by gravity to the Ergon Bio Tank for further biological treatment and polishing.
4. Design & Technical Specifications
| Specification | Detail / Range |
|---|
| Tank Type | Primary Collection & Biological Pre-Treatment Chamber |
| Material Options | M25 Bio Concrete RCC Tank (Reinforced Cement Concrete) |
| Operating Principle | Gravity flow + Anaerobic bacterial digestion |
| Power Requirements | None (Passive system) |
| Design Life | > 30 years (RCC) |
| Maintenance | Minimal (periodic inspection) |
| Typical Sizes | 1000 L – 10,000 L and above (customized) |
| Connection | Inlet from building drains; outlet to secondary treatment (Bio Tank) |
Chamber Zones:
Inlet Zone – receives raw sewage.
Sedimentation Zone – solids settle under gravity.
Digestion Zone – microbial action stabilizes organic waste.
Outlet Zone – clarified liquid flows onward.
5. Biological & Physical Reaction Chain
The Bio Collection Tank initiates the waste treatment chain through:
| Stage | Process | Result |
|---|
| Hydrolysis | Breaks complex macromolecules | Smaller organic molecules |
| Acidogenesis | Fermentation by anaerobes | Volatile fatty acids |
| Acetogenesis | Fats/sugars → acetate + H₂ | Readied for methanogenesis |
| Methanogenesis | Final anaerobic digestion | CH₄ + CO₂ + water |
The outcome is partial stabilization of waste material and reduced organic load — preparing effluent for downstream processing.
6. Performance Metrics (Typical Targets)
| Parameter | Influent Raw Sewage | Post-Collection Tank | CPCB Standard (Example) |
|---|
| pH | 6.5–8.0 | ~6.8–8.2 | 6.5–8.5 |
| BOD (mg/L) | ~250–350 | 150–200 | ≤ 30 (after full treatment) |
| COD (mg/L) | ~500–800 | 300–500 | ≤ 250 (after full treatment) |
| TSS (mg/L) | ~300–400 | 150–300 | ≤ 100 (after full treatment) |
The Bio Collection Tank is not meant to meet final discharge standards on its own — those are achieved after the complete treatment train (Bio Tank + Evaporation/Polishing). The collection tank significantly lowers solids and organic load, improving overall system performance.
7. Government Standards & Compliance (India)
The Bio Collection Tank supports regulatory compliance by preparing wastewater for full treatment so that final discharge meets norms under:
a. Water (Prevention & Control of Pollution) Act, 1974
b. Environment (Protection) Act, 1986
Under this Act, CPCB prescribes effluent discharge limits (e.g., BOD, COD, TSS) for treated wastewater, which the complete system — starting with the Collection Tank — is designed to achieve.
c. CPCB Discharge Standards (Schedule VI, EPA 1986 — Example)
These are final discharge standards for sewage after full treatment, and the Bio Collection Tank plays an important preparatory role:
By reducing the load before main treatment, the Collection Tank helps the downstream Bio Tank consistently meet these benchmarks.
8. Installation & Operational Guidelines
Site Preparation
Assess soil type, wastewater flow, and connection from building drains.
Excavation for tank base with stable load-bearing soil.
Tank Placement
Backfilling
Commissioning
Routine Inspection
Check inlet/outlet integrity.
Verify no blockages in inlet and outlet flow.
Inspect for odor or hydraulic backup.
9. Benefits of the Ergon Bio Collection Tank
✔ Efficient Primary Treatment: Begins degradation immediately, reducing load on downstream units.
✔ Reduced Sludge Formation: Minimizes solids sent to subsequent compartments.
✔ Odor Mitigation: Anaerobic breakdown in a controlled environment with venting reduces foul smells.
✔ Low Maintenance: Passive design requiring little operational input.
✔ Enhances Overall System Performance: By lowering initial organic load, the entire treatment train performs more reliably.
10. Applications
Residential Homes & Villas
Apartment Complexes
Hotels & Resorts
Educational & Institutional Campuses
Commercial Spaces
Industrial Facilities with Onsite Wastewater Systems
Ideal where central sewerage is unavailable or where sustainable, eco-friendly onsite wastewater treatment is required.
11. Safety & Environmental Considerations
Ensure venting and gas release structures are installed per design to avoid anaerobic gas buildup.
Avoid flushing non-biodegradable items that can disrupt biological activity.
Tank access points must be secured to prevent accidental entry or hazards.
Conclusion
The Ergon Bio Collection Tank is a foundational component of modern onsite wastewater management solutions. By combining primary collection, physical settling, and initial biological digestion, it prepares wastewater for advanced treatment stages, enabling downstream units like the Ergon Bio Tank and Bio Evaporation Tank to deliver eco-compliant, low-odor, sustainable effluent. Together, they form an effective, low-maintenance, and environmentally responsible wastewater treatment system suitable for residential, commercial, and institutional applications.
🧪Ergon Bio Cleanser® 🌿(HSN 3507) Advanced Bio-Enzymatic Treatment for Anaerobic Wastewater Systems.
1. Product Overview
Product Name: Ergon Bio Cleanser
Manufacturer: Ergon INC - Ergon Bio Tank
Category: Biological Wastewater Treatment Additive
Function: Accelerates the biological degradation of organic waste, reduces sludge, neutralizes odor, and improves effluent quality in domestic and industrial wastewater systems.
Role of Ergon Bio Cleanser® – Functional Summary
Bacterial Strains: Facultative anaerobes (Bacillus, Pseudomonas, Clostridium, Methanothrix)
Primary Enzymes: Protease, Lipase, Amylase, Cellulase, Esterase
Odor Control: Neutralizes H₂S and NH₃ by converting sulfides and nitrates into stable salts
Biofilm Formation: Creates a stable microbial layer on tank walls, preventing scum buildup
pH Stability: Maintains neutral range (6.8–7.4) for optimal digestion
Biodegradability: 100% natural, non-toxic, biodegradable formulation
2. Composition
| Component | Function | Typical Strains/Type |
|---|
| Non-pathogenic bacterial cultures | Decompose organic waste | Bacillus subtilis, Bacillus licheniformis, Pseudomonas fluorescens, Lactobacillus spp. |
| Enzymes (multi-enzyme complex) | Hydrolyze organic macromolecules | Amylase, Protease, Lipase, Cellulase |
| Organic nutrient carriers | Support microbial activity | Natural carbohydrates & mineral salts |
| Bio surfactants (plant-derived) | Improve substrate contact & emulsification | Saponins & biosurfactant-producing microbes |
| pH stabilizers | Maintain optimum pH for bacterial growth | Calcium carbonate / sodium bicarbonate |
Form: Powder
Shelf Life: 24 months (dry, cool storage)
Toxicity: Non-toxic, biodegradable, safe for humans and animals
Final End Products
3. Biological Reaction Mechanism
The biological treatment process occurs through sequential enzymatic reactions:
Hydrolysis: Complex organics (fats, proteins, starches) → Simpler compounds (amino acids, fatty acids, sugars).
Acidogenesis: Sugars & amino acids → Volatile fatty acids (acetic, propionic, butyric acids).
Acetogenesis: Volatile fatty acids → Acetate, CO₂, H₂.
Methanogenesis (Anaerobic stage): Acetate & CO₂ → CH₄ (Methane) + H₂O + CO₂.
Aerobic Oxidation: CO₂ + organic residues → CO₂ + H₂O + microbial biomass (harmless sludge).
Stage 1 — Hydrolysis Enzymatic Breakdown of Complex Organics
Purpose ; To break down large, insoluble organic molecules into soluble monomers that microorganisms can absorb.
Key Enzymes Activated
Representative Reactions
(C6H10O5)n+nH2O→nC6H12O6(C₆H₁₀O₅)_n + nH₂O \rightarrow nC₆H₁₂O₆
(C6H10O5)n+nH2O→nC6H12O6
Proteins + H₂O → Amino acids
Lipids + H₂O → Glycerol + Fatty acids
Results
Converts solids into soluble nutrients
Prevents scum and sludge accumulation
Prepares wastewater for biological digestion
Overall Result: Reduction of BOD, COD, Total Suspended Solids (TSS), and odor — achieving CPCB-compliant effluent discharge quality.
Stage 2 — Acidogenesis Conversion to Organic Acids and Gases
Purpose
To convert soluble monomers into organic acids and biogases through acidogenic bacteria.
Typical Reactions
C6H12O6→2CH3CH2COOH+2CO2+2H2C₆H₁₂O₆ \rightarrow 2CH₃CH₂COOH + 2CO₂ + 2H₂
C6H12O6→2CH3CH2COOH+2CO2+2H2
C6H12O6→2CH3CH2OH+2CO2C₆H₁₂O₆ \rightarrow 2CH₃CH₂OH + 2CO₂
C6H12O6→2CH3CH2OH+2CO2
Main Products
Results
Significant reduction of organic load
Suppression of sulfur-producing, odor-causing bacteria
Generates substrates for acetogenesis
Purpose
To convert volatile fatty acids into acetate, hydrogen, and carbon dioxide.
Typical Reaction
CH3CH2COOH+2H2O→CH3COOH+CO2+3H2CH₃CH₂COOH + 2H₂O \rightarrow CH₃COOH + CO₂ + 3H₂
CH3CH2COOH+2H2O→CH3COOH+CO2+3H2
Outputs
Acetate (CH₃COOH)
Hydrogen (H₂)
Carbon dioxide (CO₂)
Results
Stabilizes intermediate acids
Prevents acid shock and prolonged low pH
Ensures steady, controlled feed for methanogenesis
Stage 4 — Methanogenesis & Methane Neutralization Final Stabilization and Carbon Balance
Purpose
To convert acetate and hydrogen into methane and carbon dioxide, followed by biological methane neutralization.
Methanogenic Reactions
CH3COOH→CH4+CO2CH₃COOH \rightarrow CH₄ + CO₂
CH3COOH→CH4+CO2
CO2+4H2→CH4+2H2OCO₂ + 4H₂ \rightarrow CH₄ + 2H₂O
CO2+4H2→CH4+2H2O
4. Performance Parameters
| Parameter | Initial Value (Typical Raw Wastewater) | Treated Effluent (After 14–21 Days) | CPCB Limit (General Standards) |
|---|
| pH | 6.0–8.5 | 6.5–8.5 | 6.5–8.5 |
| BOD (mg/L) | 250–350 | 25–30 | ≤ 30 |
| COD (mg/L) | 500–800 | 150–250 | ≤ 250 |
| TSS (mg/L) | 300–400 | 70–90 | ≤ 100 |
| Oil & Grease (mg/L) | 50–80 | 10–15 | ≤ 10–15 |
| Odor (H₂S, NH₃) | Strong | Negligible | — |
These values indicate consistent alignment with CPCB Schedule VI, EPA 1986 (Rule 3A) discharge norms.
5. Dosage Guidelines
a. Domestic Septic Systems
| Tank Capacity | Initial Dose | Maintenance Dose | Frequency |
|---|
| Up to 1000 L | 250 g / 250 mL | 100 g / 100 mL | Weekly |
| 2000–5000 L | 500 g / 500 mL | 200 g / 200 mL | Weekly |
| >5000 L | 1 kg / 1 L | 500 g / 500 mL | Weekly |
b. Commercial/Institutional Systems
| Type | Volume Range | Dosage | Frequency |
|---|
| Apartment STP | 10–50 m³ | 1 kg per 10 m³ | Every 3–5 days |
| Hotel / Hospital STP | 50–100 m³ | 1.5 kg per 10 m³ | Every 3–5 days |
| ETP / Industrial Plant | >100 m³ | 2 kg per 10 m³ | Every 3–5 days |
⚠️ Avoid use of chlorine, acid, or harsh detergents in the system within 12 hours before or after dosing.
6. Compliance Standards
| Standard / Clause | Description |
|---|
| CPCB (General Standards for Discharge of Environmental Pollutants, Schedule VI – EPA 1986) | Specifies permissible limits for BOD ≤ 30 mg/L, COD ≤ 250 mg/L, TSS ≤ 100 mg/L for treated sewage. |
| ISO 10634:2018 | Guidelines for testing biodegradability of organic compounds in aqueous media. |
| ISO 8192:2007 | Water quality — inhibition test of activated sludge by chemicals. |
| Water (Prevention and Control of Pollution) Act, 1974 — Section 24(1) | Prohibits discharge of pollutants exceeding prescribed standards into water bodies. |
| National Building Code (NBC 2016, Part 9, Section 1) | Encourages use of eco-friendly onsite treatment systems for sewage and greywater reuse. |
Ergon Bio Cleanser supports compliance with all above standards by ensuring treated effluent meets BOD/COD norms without harmful byproducts.
7. Safety & Environmental Data
Biodegradability: >98% (OECD 301B Test)
Non-pathogenicity: Verified by standard microbial screening
Storage Conditions: Keep sealed, dry, below 40°C
Safety Classification: Non-hazardous under OSHA & UN GHS
8. Application & Maintenance Recommendations
Ensure continuous wastewater flow for best results.
Maintain pH between 6.5–8.5 in the tank.
Use monthly visual or lab testing (BOD/COD) to confirm performance.
Supplement dosing if system receives high detergent or chemical inflow.
9. Expected Outcomes
✅ 90–95% reduction in odor
✅ 60–80% reduction in sludge volume within 4–6 weeks
✅ 70–90% improvement in effluent clarity
✅ CPCB-compliant discharge water within 21 days of consistent dosing
Stage 5 :Aerobic Oxidation — Biological Mechanism and Environmental Application
1. Definition and Overview
Aerobic oxidation is a biological process in which microorganisms (mainly aerobic bacteria) use oxygen to oxidize and break down organic residues (biodegradable matter) into carbon dioxide (CO₂), water (H₂O), and microbial biomass (cellular growth or harmless sludge).
It represents one of the final and most stable stages of wastewater treatment, ensuring the complete mineralization of organic compounds and stabilizing the effluent before safe discharge or reuse.
The generalized reaction can be represented as:
\text{Organic Matter (CₓHᵧO_z) + O₂ → CO₂ + H₂O + New Cells (Biomass)}
Simplified in the context of biological wastewater treatment:
CO₂ + organic residues → CO₂ + H₂O + microbial biomass
\text{CO₂ + organic residues → CO₂ + H₂O + microbial biomass}
CO₂ + organic residues → CO₂ + H₂O + microbial biomass
2. Scientific Mechanism
a. Microbial Role
The process is driven by aerobic heterotrophic bacteria such as Pseudomonas, Bacillus, Nitrosomonas, Nitrobacter, and Flavobacterium species.
These microorganisms utilize dissolved oxygen (DO) as an electron acceptor during metabolism.
Oxidation:
The microbes oxidize carbonaceous organic compounds to extract energy (ATP).
C6H12O6+6O2→6CO2+6H2O+Energy(ATP)C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O + Energy (ATP)
C6H12O6+6O2→6CO2+6H2O+Energy(ATP)
Synthesis:
Part of the organic carbon is assimilated by microorganisms for cell growth and reproduction, forming biomass (microbial sludge).
Respiration:
The produced CO₂ and H₂O are released as byproducts, and the biomass continues the oxidation cycle with new organic inputs.
Synthesis:
Part of the organic carbon is assimilated by microorganisms for cell growth and reproduction, forming biomass (microbial sludge).
Respiration:
The produced CO₂ and H₂O are released as byproducts, and the biomass continues the oxidation cycle with new organic inputs.
3. Role in Wastewater Treatment
Primary Function:
Aerobic oxidation reduces biochemical oxygen demand (BOD) and chemical oxygen demand (COD) — key indicators of water pollution.
Application Stages:
In Ergon Bio Tank Systems:
The aerobic oxidation phase occurs after anaerobic stabilization. It ensures the oxidation of residual organic matter, producing a clear, odor-free effluent.
In Activated Sludge Processes (ASPs):
This is the main treatment stage where aeration and microbial oxidation occur intensively.
In Natural Systems:
Found in oxidation ponds, trickling filters, and constructed wetlands.
4. Biochemical Reactions
| Process | Type | Example Reaction |
|---|
| Carbon Oxidation | Aerobic degradation of carbonaceous matter | C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O |
| Biomass Formation | Assimilation of organics into microbial cells | Organic matter + O₂ → Biomass (C₅H₇O₂N) |
| Nitrification (if nitrogen present) | Oxidation of NH₄⁺ to NO₃⁻ | NH₄⁺ + 2O₂ → NO₃⁻ + 2H⁺ + H₂O |
5. Output Products
| Product | Description | Environmental Impact |
|---|
| CO₂ (Carbon Dioxide) | Stable gaseous end product of carbon oxidation | Released harmlessly into atmosphere |
| H₂O (Water) | Produced from oxidation of hydrogen in organics | Joins treated effluent, safe for discharge |
| Microbial Biomass (Sludge) | Dead and living microbial cells | Settles as harmless sludge, can be used as biofertilizer after stabilization |
6. Environmental and Operational Benefits
✅ Odor Elimination:
Complete oxidation prevents formation of hydrogen sulfide (H₂S) or methane (CH₄), making the process odor-free.
✅ High Treatment Efficiency:
Can achieve >90% reduction in BOD and COD when optimized.
✅ Non-toxic End Products:
Produces CO₂, H₂O, and stable biomass with no harmful residues.
✅ Supports Regulatory Compliance:
Effluent after aerobic oxidation can meet CPCB Schedule VI and EPA 1986 discharge standards:
BOD ≤ 30 mg/L
COD ≤ 250 mg/L
TSS ≤ 100 mg/L
✅ Environmentally Sustainable:
Operates naturally with oxygen (ambient or supplied), requiring minimal intervention in passive systems like Ergon Bio Tanks.
7. Design Considerations in Ergon Bio Systems
In Ergon Bio Tank Systems, aerobic oxidation occurs in the upper or final compartment, enhanced by:
Natural air diffusion via vent stacks.
Biofilm media providing a large surface area for microbial colonization.
Residual oxygen from venting and convection processes.
This ensures:
Rapid stabilization of wastewater.
Minimal sludge generation.
Clear and odorless effluent.
8. Relation to Anaerobic Processes
| Aspect | Anaerobic Digestion | Aerobic Oxidation |
|---|
| Oxygen Requirement | None | Requires oxygen |
| End Products | CH₄, CO₂, NH₃ | CO₂, H₂O, Biomass |
| Energy Generation | Produces methane (biogas) | Consumes oxygen, produces heat |
| Odor | Possible (H₂S) | None |
| Reaction Speed | Slower | Faster |
In hybrid systems like Ergon’s, anaerobic and aerobic zones work sequentially to maximize treatment efficiency.
9. Environmental Compliance Framework (India)
Aerobic oxidation supports compliance with:
Water (Prevention and Control of Pollution) Act, 1974
Environment (Protection) Act, 1986
CPCB Schedule VI (EPA 1986) — defines effluent discharge norms
ISO 10634:2018 — biodegradability testing standards
National Building Code (NBC 2016, Part 9) — sustainable sanitation design standards
10. Summary
Aerobic oxidation is the final polishing step in biological wastewater treatment, converting remaining organic matter into stable, environmentally safe products.
By leveraging oxygen and beneficial microbes, it:
Produces clear, odor-free, and non-toxic effluent
Reduces pollution load to meet or exceed regulatory norms
Forms only harmless biological sludge, suitable for composting or biofertilizer use
In the Ergon Bio Tank System, this stage completes the natural purification cycle, ensuring sustainable wastewater treatment aligned with CPCB and ISO environmental standards.
🏭 Ergon Bio Evaporation Tank System — HSN 6810-Technical & Regulatory Specification Document
Product Name: Ergon Bio Evaporation Tank System
Manufacturer: Ergon INC
Category: Passive Wastewater Volume Reduction & Secondary Treatment System
Application: Domestic, Commercial, Institutional & Industrial Wastewater Systems
Function: Reduces effluent volume through natural evaporation, enhances site disposal efficiency, and complements the Ergon Bio Tank’s biological treatment.
1. System Overview
The Ergon Bio Evaporation Tank System (EBETS) is an advanced secondary wastewater treatment and disposal module, engineered to work alongside or downstream of the Ergon Bio Tank.
Its primary function is to naturally evaporate treated wastewater effluent through an optimized combination of heat exchange, convection, and microbial stabilization — without requiring electricity, moving parts, or chemical additives.
This system offers a sustainable, zero-energy alternative to traditional soak pits and leach fields, particularly in areas with high groundwater tables, low soil percolation, or strict discharge regulations.
2. Working Principle — Biological & Physical Mechanism
The Ergon Bio Evaporation Tank operates via combined biological stabilization and natural evaporation.
a. Inflow Stage (Effluent Entry)
Treated wastewater from the Ergon Bio Tank enters the evaporation chamber through a controlled inlet. The effluent is already low in BOD, COD, and TSS, ensuring hygienic and odor-free operation.
b. Biological Stabilization
Residual microorganisms and enzymes (from Ergon Bio Cleanser or native colonies) continue to act on trace organics.
Residual BOD/COD is further reduced by microbial oxidation.
Ammoniacal nitrogen and trace organics are converted into gaseous byproducts (N₂, CO₂, CH₄) or inert solids.
c. Natural Evaporation Phase
The top section of the tank is designed for maximum air–water interface exposure.
Vent stacks and thermal convection shafts draw warm air through the system, increasing the rate of evaporation and gas exchange.
Water vapor escapes safely through vents, while condensate is minimized via baffles and anti-drip diffusers.
d. Final Effluent Control
Only highly stabilized residual liquid (if any) proceeds to soak pit or is absorbed into soil, ensuring no groundwater contamination.
3. Design and Technical Specifications
| Specification | Detail / Range |
|---|
| System Type | Passive Evaporation + Biological Polishing Unit |
| Construction Material | HDPE / FRP (Fiberglass Reinforced Polymer) / RCC based on site condition |
| Operating Principle | Natural Evaporation & Microbial Decomposition |
| Power Requirement | Nil (Passive Airflow System) |
| Temperature Range for Optimal Operation | 15°C – 50°C |
| Design Life | > 25 Years |
| Average Evaporation Rate | 4–6 mm/day (varies with climate) |
| Ventilation Design | Natural Draft Vents (PVC/FRP stack with anti-condensate cap) |
| Typical Size Range | 1,000 – 10,000 liters per unit |
| Installation Mode | Semi-underground / Surface-mounted with insulated vent stack |
| Maintenance | Negligible; periodic inspection only |
| Odor Control | Aerobic film + activated bio-media layer |
| Safety Ventilation | Pressure-neutral stack preventing gas build-up |
| Compatible Systems | Ergon Bio Tank 1+2, 2+3, or standalone greywater reuse modules |
4. System Composition
Inlet Chamber: Receives biologically treated effluent.
Evaporation Core Chamber: Facilitates heat absorption and air–water interaction.
Vent Stack Assembly: A vertical outlet promoting vapor escape and convection.
Biofilm Media (Optional): Porous synthetic media supporting microbial polishing.
Outlet Drain (if applicable): For minimal non-evaporated water flow to soak pit or garden reuse.
-
5. Physical and Biological Reactions
| Stage | Process Type | Transformation |
|---|
| 1. Aerobic Oxidation | Biological | Trace organic compounds → CO₂ + H₂O |
| 2. Nitrification | Biological | NH₄⁺ → NO₂⁻ → NO₃⁻ → N₂ (gas) |
| 3. Evaporation | Physical | H₂O (liquid) → H₂O (vapor) via convection |
| 4. Degassing | Physical | Volatile gases safely vented to atmosphere |
| 5. Polishing & Clarification | Biological/Physical | Further BOD & COD reduction |
6. Performance Parameters
| Parameter | Input from Bio Tank | After Evaporation Tank | CPCB Norms (Discharge Limit) |
|---|
| pH | 6.5 – 8.0 | 6.5 – 8.5 | 6.5 – 8.5 |
| BOD (mg/L) | 25 – 30 | ≤ 20 | ≤ 30 |
| COD (mg/L) | 150 – 250 | ≤ 150 | ≤ 250 |
| TSS (mg/L) | 70 – 90 | ≤ 50 | ≤ 100 |
| Odor (H₂S/NH₃) | Minimal | None detectable | — |
| Effluent Volume Reduction | — | Up to 60–70% by evaporation | — |
Conclusion:
Effluent exiting this system is typically safe for discharge to soil or reuse under Schedule VI, EPA 1986 standards.
7. Benefits of the Ergon Bio Evaporation Tank System
✅ Zero Energy Operation: 100% natural evaporation using sunlight and airflow.
✅ Groundwater Safety: No infiltration of untreated liquid.
✅ Odor-Free: Aerobic biofilm and vent stacks prevent foul emissions.
✅ Maintenance-Free: No mechanical components; inspection every 12–18 months.
✅ Compact Footprint: Requires 40–60% less space than conventional soak pits.
✅ Scalable: Modular design allows parallel or series configurations for larger facilities.
8. Environmental & Government Compliance
Applicable Acts & Clauses (India)
| Act / Standard | Clause | Relevance |
|---|
| Water (Prevention & Control of Pollution) Act, 1974 | Sec. 24(1) | Prohibits direct discharge of polluting effluents into water bodies. |
| Environment (Protection) Act, 1986 | Schedule VI | Defines permissible limits for treated sewage/effluent. |
| CPCB Effluent Discharge Standards (EPA 1986) | BOD ≤ 30 mg/L, COD ≤ 250 mg/L, TSS ≤ 100 mg/L | The Ergon system achieves or exceeds these standards. |
| ISO 16075:2020 | Guidelines for treated wastewater reuse | Supports effluent reuse in irrigation after evaporation stage. |
| National Building Code (NBC 2016, Part 9) | Sustainable sanitation systems | Encourages use of eco-friendly onsite treatment & disposal methods. |
9. Installation Guidelines
- Site Preparation:
Excavate based on design capacity; ensure firm sub-base and no groundwater inflow.
Placement:
Install tank with vent stack oriented toward natural airflow for optimal convection.
Connection:
Connect outlet of Bio Tank to inlet of Evaporation Tank via PVC/HDPE conduit.
Backfilling & Leveling:
Use sand/gravel backfill; avoid compacting too tightly around vent base.
Commissioning:
Introduce treated effluent gradually; confirm airflow through vent stack.
10. Maintenance & Safety
No daily maintenance required.
Inspect vent openings semi-annually to prevent obstruction.
Ensure no rainwater ingress.
Avoid chemical inflows (chlorine, acids, phenols) that can harm microbes.
Follow vent height recommendations per CPCB / NBC for safe gas dispersal.
11. Typical Applications
🏠 Residential Homes & Apartments
🏨 Hotels, Resorts, and Hospitals
🏫 Schools & Institutional Campuses
🏭 Industrial Canteens & Office Facilities
🏕 Rural Sanitation & Eco-Villages
Especially recommended for regions with low percolation, rocky subsoil, or high groundwater levels.
12. Expected Field Performance
Effluent reduction: 60–70% via evaporation
BOD/COD polishing: Up to 30% improvement post bio tank
Odor elimination: 100% under normal operation
Service life: >25 years
Return on investment: Within 2–3 years through zero maintenance costs
13. Summary
The Ergon Bio Evaporation Tank System is a sustainable, maintenance-free wastewater management solution that complements biological treatment systems by offering natural, energy-free effluent volume reduction.
Through a combination of biological polishing, passive heat-assisted evaporation, and advanced venting, it ensures long-term compliance with environmental standards, preserves groundwater, and delivers a clean, odor-free onsite wastewater solution for both urban and rural infrastructures.