Ergon Bio Tank Profile

Ergon Bio Tank Profile


The Ergon Bio Tank®  by Ergon INC is India’s leading eco-friendly onsite wastewater treatment system, designed for homes, villas, apartments, commercial buildings, institutions, and light industries. Powered by advanced Bio-Nano Technology, it delivers a complete 2-stage Bio Wastewater Treatment Plant

Ergon Bio Tank® 
Zero Energy • Zero Chemical • CPHEEO (Central Public Health and Environmental Engineering)
                                                 equity, sustainability, and service level benchmarks (SLB).
Raw Domestic Sewage - 50 LPCD x Per User
Stage I – Anaerobic Biological Digestion
CPHEEO 2013 • Sec 12.3 & 12.7 • IS 2470
Stage II – Aerobic Polishing Plus Evapotranspiration 
CPHEEO 2013 • Sec 12.4
Ergon Bio Tank System / Non-Potable ReuseType I Gardening 
IS 2470 • EPA 1986 • ISO 16075
✔ 100% Biological   ✔ Zero Energy & Chemicals   ✔ CPHEEO • CPCB • IS • NBC • IGBC

Now trusted across Indian cities including Chennai, Bengaluru, Hyderabad, Coimbatore, Kochi, and Mumbai, the Ergon Bio Tank transforms raw sewage into clear, odorless, reusable or recharge-ready water, helping projects achieve Zero EnergyZero Discharge, and Net-Zero Wastewater Treatment outcomes.


CPHEEO Compliance , Quality Constant "Beyond Supply: Meeting the Benchmarks of Urban Excellence."  

📜 Compliance & Safety • Environmental & Government Acts (India)

Nature of System: 100% Biological | Non-toxic | Zero Energy | Zero Chemical Free

📘 CPHEEO M​anual – Sewerage & Sewage Treatment (2013) Primary Anaerobic Treatment 
  • Section 12.3 – Primary Anaerobic Treatment
  • Section 12.4 – Secondary Aerobic Treatment
  • Section 12.7 – Land / ET disposal & decentralized systems
  • Chapter 7 – Anaerobic & aerobic digestion principles
  • Compliant with decentralized onsite sanitation systems
  • Zero-Energy & Zero-Chemical Operation – IGBC Net Zero Water
📗 IS 2470 – Code of Practice (1985) Effluent Disposal:
  • Approved Digestion Process: -IS 2470 (Part 1): Design & construction of septic / digestion systems
  • IS 2470 (Part 2): Disposal of effluent
  • Clause 6.2 – Sub-surface & land disposal
  • Approved anaerobic & biological digestion process
🏗 National Building Code (NBC 2016)
  • Part 9 – Plumbing & sustainable sanitation systems
  • Part 11 – Water efficiency & wastewater reuse
  • Supports green & sustainable building design
🌱 IGBC – Net Zero Water Compliance
  • Zero-energy & zero-chemical wastewater treatment
  • Onsite greywater / sewage treatment & reuse
  • Reduction of freshwater demand
  • Supports Net Zero Water building certification
Water (Prevention & Control of Pollution) Act, 1974
  • Section 24 – Prevention of pollution of water bodies
  • Section 24(1) – Prohibition of untreated discharge on land or water
  • Ensures controlled treatment & compliant disposal
🌍 Environment (Protection) Act, 1986
  • Schedule VI – Environmental discharge standards
  • Applies to treated effluent quality
  • Supports decentralized STPs & onsite systems
🧪 CPCB – Effluent Discharge Standards 
  • As per EPA 1986 – Schedule VI
  • BOD, COD, TSS within permissible limits
  • Applicable to decentralized treatment systems
🌐 ISO 16075:2020 – Treated Wastewater Reuse
  • Part 1 – General principles & definitions
  • Part 2 – Sub-surface irrigation
  • Part 3 – Non-potable reuse & health protection
  • Reuse applications:
    • Landscaping & gardening
    • Bore / ground percolation
    • Controlled non-potable reuse
    • UV-treated flushing reuse

"CPHEEO Compliant. Ergon Powered. Total Per Capita Accountability."

📘 CPHEEO LPCD – Design Basis

Clause C-1: Definition of LPCD
Liters Per Capita Per Day (LPCD) is the average quantity of water supplied or wastewater generated per person per day and forms the primary basis for sewage and greywater system design.

Clause C-2: CPHEEO Recommended Domestic LPCD
As per the standard domestic water demand for urban areas with full water supply shall be taken as
135 LPCD. 50 sewage , 85 Greywater

Clause C-3: Post-COVID Design Adoption
Considering enhanced hygiene practices, frequent handwashing, and increased cleaning, a higher LPCD may be adopted for realistic and safe design. Accordingly, 200 LPCD is adopted as a project-specific CPHEEO-compliant design value.

Area CategoryCPHEEO Standard (Per Capita)Compliance Goal
Metropolitan / Mega Cities150 LPCDFull Sewerage & Industrial projects
Urban Cities (with Sewerage)135  Post Covid 200 LPCDDomestic + Commercial + Villas
Towns (without Sewerage)70 LPCDBasic Domestic
Public Stand Posts (PSPs)40 LPCDMinimum Hygiene Standard
🟢 Sewage Generation – CPHEEO- 50 LPCD

Clause S-1: Sewage Generation Factor
CPHEEO recommends that 80% to 90% of total water supply shall be considered as sewage generation.

Sewage Design Formula:
Sewage Flow (KLD) = Population × LPCD × 0.8 to 0.9 ÷ 1000

Clause S-2: Design Intent
The adopted sewage factor shall account for conveyance losses, consumptive use, and evaporation, while ensuring that treatment units are not hydraulically under-sized.

🔵 Greywater Generation – CPHEEO - Post Covid - 150 LPCD

Clause G-1: Greywater Definition
Greywater includes wastewater generated from bath, wash basin, laundry, and kitchen (after grease trap), excluding toilet waste.

Clause G-2: Greywater Proportion
As per CPHEEO planning practice, greywater typically constitutes 60% to 70% of total domestic water consumption.

Greywater Design Formula:
Greywater Flow (KLD) = Population × Greywater LPCD ÷ 1000

Clause G-3: Post-COVID Greywater LPCD
In post-COVID conditions, greywater generation shall be adopted as 150 LPCD due to increased washing and cleaning practices, unless supported by lower metered data approved by authorities.

📐 Design & Compliance Note

LPCD values adopted for sewage and greywater design shall be clearly stated in DPRs, drawings, and tender documents and shall conform to CPHEEO philosophy, subject to approval by local bodies and Pollution Control Boards.

Separate treatment of sewage and greywater is encouraged to improve reuse efficiency, reduce load on STPs, and promote sustainable water management.

"Water Security Through CPHEEO Integrity." "Precision in Per Capita, Excellence in Every Home."

🟢 Primary Bio Collection & Bio Anaerobic & Anaerobic Bacterial Digestion
Process Description Primary Anaerobic Process & Anaerobic (Oxygen-Free) Biological Digestion

Raw domestic sewage is treated through  where naturally occurring anaerobic bacteria decompose organic matter without oxygen, power, or chemicals. Raw sewage comprising blackwater and greywater first enters the Ergon Bio Collection Tanksealed anaerobic Cylindrical Bio Collection Tank  biological digestion, a sealed anaerobic chamber engineered with Ergon’s proprietary Bio-Nano coating. In the absence of oxygen, specialized anaerobic microorganisms—supported by the Ergon Bio Cleanser enzyme process—initiate natural biological digestion.

During this stage, complex organic matter such as fecal solids, fats, oils, grease, starches, and proteins undergo sequential biochemical transformations (hydrolysis → acidogenesis → acetogenesis → methanogenesis). This process significantly reduces organic load, odour, and suspended solids, converting raw sewage into partially treated, odourless, and stabilized effluent without electricity, chemicals, or mechanical equipment.

The anaerobically treated effluent then flows by gravity to the next stage for final polishing.

Mapped Regulatory & Standard Compliance

Nature of Treatment ; 100% Biological | Non-toxic | Chemical-free | Odour-free | Zero-Energy & Zero-Chemical Operation

Ergon Bio Cleanser® is an advanced bio-enzymatic formulation developed for anaerobic and hybrid wastewater treatment systems. It accelerates digestion of organic waste, reduces sludge, neutralizes odour, and improves effluent quality without chemicals or electricity.

Anaerobic Digestion Products:  CO₂ (Carbon dioxide) | CH₄ (Methane) | H₂O (Water) | Stabilized biomass

Stage I Outcome

  • Significant reduction of BOD, COD, TSS
  • Stabilized effluent suitable for secondary aerobic polishing
  • Acts as approved replacement for conventional septic tanks
Note: Stage I effluent is not intended for direct discharge or reuse without Stage II treatment.

Application: Ergon Bio Tanks, Bio Septic Tanks, Bio STPs, Bio Greywater Systems


🧪 Functional Role of Ergon Bio Cleanser®
  • Bacterial Consortium: Bacillus, Pseudomonas, Clostridium, Methanothrix
  • Primary Enzymes: Protease, Lipase, Amylase, Cellulase, Esterase
  • Odour Control: Converts H₂S & NH₃ into stable compounds
  • Biofilm Formation: Prevents scum buildup
  • pH Stability: Maintains 6.8 – 7.4
  • Biodegradability: 100% natural & non-toxic
  • Click More Details on Ergon Bio Cleanser 
🧬 Composition & Physical Properties
  • Microbial Cultures: Bacillus subtilis, B. licheniformis, Pseudomonas fluorescens, Lactobacillus spp.
  • Enzymes: Amylase, Protease, Lipase, Cellulase
  • Nutrient Carriers: Natural carbohydrates & mineral salts
  • Bio-surfactants: Plant-derived saponins
  • Form: Powder | Shelf Life: 24 months
  • Toxicity: Non-toxic, safe for humans & animals
🔬 Biological Reaction Mechanism (Stage-wise)

Stage 1 – Hydrolysis
CPHEEO 2013 Sec. 12.3 | IS 2470-1 Cl. 4.2
Polysaccharides → Sugars | Proteins → Amino acids | Fats → Fatty acids

Stage 2 – Acidogenesis
CPHEEO 2013 Sec. 7.4.2 | IS 2470-1 Cl. 5
Glucose → VFAs + CO₂ + H₂

Stage 3 – Acetogenesis
CPHEEO 2013 Sec. 7.4.3 | IS 2470-1 Cl. 5.3
VFAs → Acetate + CO₂ + H₂

Stage 4 – Methanogenesis
CPHEEO 2013 Sec. 7.4.4 | IS 2470-1 Cl. 6
CH₃COOH → CH₄ + CO₂

Results: Complete stabilization, minimal sludge, odour elimination

🟢 Certificate – Stage I Compliance

This is to certify that the Ergon Bio Tank® Stage I system operates as a Primary Anaerobic Biological Digestion unit, conforming to:

  • Primary Anaerobic Treatment - CPHEEO Manual on Sewerage & Sewage Treatment (2013) – Section 12.3
  • Anaerobic digestion- CPHEEO Manual (2013) – Section 12.7 & Chapter 7 
  • Approved digestion process- IS 2470 (Part 1 & Part 2):1985
  • Sustainable sanitation-National Building Code (NBC 2016) – Part 9 & Part 11
  • Pollution prevention-Water (Prevention & Control of Pollution) Act, 1974 – Section 24
  • Nature: 100% Biological Non-toxic | Chemical-free
  • Energy: Zero-Energy & Zero-Chemical Operation 
  • IGBC: Net Zero Water – Primary alignment

The system functions without electricity, chemicals, or mechanical components and serves as an approved replacement for conventional septic tanks.

Stage II Secondary Bio Evaporation Tank 


🔵 Secondary Bio Evaporation Tank – Stage II: Aerobic Polishing & Evapotranspiration (ZLD)
Process Description : Stage I treated effluent undergoes natural aerobic polishing, followed by evapotranspiration (ET) 

Secondary Bio Evaporation Tank - Aerobic Biological Treatment with Evapotranspiration

In Stage II, the pre-treated effluent enters the Ergon Bio Evaporation Tank, where aerobic microorganisms further oxidize residual organic matter in the presence of atmospheric oxygen. This aerobic bio-polishing process reduces remaining BOD, COD, and pathogens, producing clear, non-toxic, and environmentally safe water.

The treated water is then naturally dispersed through evapotranspiration and ground recharge, depending on site conditions. This eliminates surface discharge and prevents groundwater contamination, achieving Zero Discharge wastewater management.

Stage II provides aerobic polishing and natural water removal without discharge. Water is released into engineered soil and plant root zones, returning safely to the atmosphere.
  • Aerobic Oxidation: Organics → CO₂ + H₂O
  • Nitrification: NH₄⁺ → NO₃⁻ → N₂
  • Evaporation & Transpiration
  • Final BOD & COD reduction
CPCB Schedule -VI Compliant treated Ergon Stage II Outcome  Zero Sludge & Zero operator Requirement
  1. Evapotranspiration -  Ergon Bio Tank System Type I 
  2. Soil absorption : Gardening Or Bore System - Ergon Bio Greywater System Type II & Type III
  3. Non-Potable- Reuse - Ergon Bio Greywater Type IV
  4. Eliminates dewatering & Tanker dependency

🔵 Certificate – Stage II Compliance

This is to certify that the Ergon Bio Tank® Stage II system provides Secondary Aerobic Polishing followed by Evapotranspiration / Land Disposal, fully compliant with:

  • Secondary Aerobic Treatment - CPHEEO Manual (2013) – Section 12.4
  • Land / ET disposal- CPHEEO Manual (2013) – Section 12.7
  • Effluent disposal- IS 2470 (Part 2):1985 – Clause 6.2
  • Environment (Protection) Act, 1986 – Schedule VI
  • CPCB Effluent Discharge Standards
  • Water (Prevention & Control of Pollution) Act, 1974 – Section 24(1)
  • Treated wastewater reuse-  ISO 16075:2020 
  • Effluent standards-EPA 1986: Schedule VI
  • IGBC: Net Zero Water – Full alignment
The treated effluent is suitable for non-potable reuse and supports IGBC Net Zero Water & sustainable water management applications.
✅ Final System Declaration (Approval-Ready)
Ergon Bio Tank® Stage I & Stage II system is a fully compliant, decentralized, biological wastewater treatment solution meeting CPHEEO, IS 2470, CPCB, EPA 1986, NBC 2016, IGBC Net Zero Water, Water Act 1974, and ISO 16075:2020 standards, operating without electricity, chemicals, or mechanical components.

🌿 Ergon Bio Collection Tank : HSN 6810 Anaerobic & Bacterial Enzymes Digestion 

⚙️ Ergon Budget Bio Collection Tank – Design & Performance Specifications

ParameterSpecification
System TypePrimary Anaerobic Bio Collection Tank
Design Flow Rate50 LPCD per User 
User Capacity (Indicative)Good Soil: 06 – 08 Users
Clay Soil: 04 – 06 Users
Tank Capacity1000 Liters
Tank ConstructionRCC – M25 Grade
Tank Dimensions5 ft Height × 3.25 ft Diameter
Biological AdditiveErgon Bio Cleanser®
Dosing Quantity200 g × 1 No.
Dosing FrequencyOnce every 6 months
Energy RequirementZero Energy • No Mechanical Equipment
PerformanceOdourless Operation
Minimal Sludge Generation
Eco-Friendly & Low Maintenance
Design LifeLong Service Life with Biological Maintenance

📜 Compliance & Certification – Ergon Budget Bio Collection Tank
📘 Regulatory Compliance
  • CPHEEO Manual on Sewerage & Sewage Treatment (2013) – Section 12.3
  • CPHEEO Manual (2013) – Section 12.7 (Onsite decentralized systems)
  • IS 2470 (Part 1 & Part 2):1985 – Approved anaerobic digestion process
  • National Building Code (NBC 2016) – Part 9 & Part 11
  • IGBC – Net Zero Water (Primary Treatment Alignment)
  • Water (Prevention & Control of Pollution) Act, 1974 – Section 24
🟢 Certificate – Stage I Compliance

This is to certify that the Ergon Budget Bio Collection Tank – Stage I operates as a Primary Anaerobic Biological Digestion system, designed for decentralized treatment of domestic sewage / greywater.

The system conforms to the following statutory codes and standards:

  • CPHEEO Manual on Sewerage & Sewage Treatment (2013) – Section 12.3
  • CPHEEO Manual (2013) – Section 12.7
  • IS 2470 (Part 1 & Part 2):1985
  • National Building Code (NBC 2016) – Part 9 & Part 11
  • Water (Prevention & Control of Pollution) Act, 1974 – Section 24

The system functions without electricity, chemicals, or mechanical components and serves as an approved, eco-friendly alternative to conventional septic tanks, supporting sustainable sanitation and Net Zero Water objectives.


🏗️  Ergon Bio Collection Tank - Variants 
  • Primary Treatment: Anaerobic Plus Bacterial  digestion &  for Clear ,odourless water. 
  • Budget Series (1000 liters ) 5 ft (Height) × 3.25 ft (Diameter)
  • Elite Series ( 1250 Liters ) 6'25 ft (Height) × 3.25 ft (Diameter) 
  • Bio STP ( 2 KL )  8'25 ft (Height) × 3.25 ft (Diameter) 
  • Function: Bio-coated Collection  anaerobic chamber that digests organic solids into clear liquid. 
🌟 Key Performance Benefits
  • No Sludge Build-up: Eliminates the need for vacuum trucks or honey suckers.
  • Odourless Operation: Hermetically sealed, bio-active environment prevents foul smells.
  • Zero Discharge: Eco-engineered to protect groundwater and soil.
  • Ready Stock: Prefabricated and available for immediate installation.

© 2025 Ergon INC | Sustainable Wastewater Treatment | Compliant with CPCB & EPA 1986 Norms