Biogas Plant Solutions β Sewaf Energy
Introduction
As the world moves towards sustainable energy and zero-waste living, biogas plants have emerged as one of the most practical and eco-friendly solutions. They not only manage organic waste efficiently but also generate renewable energy (biogas) and organic fertilizer (slurry).
Sewaf Energy India Pvt Ltd is a pioneer in delivering biogas plant solutions for domestic, institutional, industrial, and community applications. With over 200+ projects successfully executed across India and abroad, we design and install cost-effective, durable, and eco-friendly biogas systems that turn waste into valuable resources.
What is a Biogas Plant?
A biogas plant uses the process of anaerobic digestion to break down organic waste such as kitchen scraps, food waste, agricultural residues, and animal dung.
The output is:
- Biogas (methane-rich fuel): Used for cooking, heating, and electricity generation.
- Organic Slurry: A nutrient-rich bio-fertilizer that improves soil health.
This simple yet powerful technology helps solve waste management problems while reducing dependence on fossil fuels.
Leading Manufacturer of State-of-the-Art Biogas Plants
β» βPower your future sustainably with biogas.β
π₯ βClean energy, zero waste, endless benefits.β
π‘ βFrom organic waste to renewable power β naturally.β
As the world moves towards a greener future, biogas is emerging as a powerful renewable energy source. At Sewaf Energy, we specialize in designing and manufacturing customized biogas plants tailored to meet the unique needs of agriculture, industry, and commercial sectors.
Combining years of experience with advanced technology, we deliver solutions that are:
- Highly efficient
- Reliable and durable
- Environmentally sustainable
Our biogas plants use modern anaerobic digestion systems, automated monitoring, and robust purification technologies to ensure:
- High energy yield
- Low maintenance requirements
- Significant reduction in waste and emissions
Types of Biogas Plants by Sewaf Energy
1. Domestic Biogas Plants
Compact plants designed for households and small farms, converting kitchen waste into cooking gas and fertilizer.
Applications: Homes, rural households, farmhouses.
2. Institutional Biogas Plants
Larger plants designed for schools, hostels, hospitals, and canteens that generate daily food waste.
Applications: Educational institutes, hotels, community kitchens.
3. Industrial Biogas Plants
Customized for dairies, breweries, agro-processing, and food industries generating large amounts of organic waste.
Applications: Factories, production units, agro-industrial facilities.
4. Community Biogas Plants
Designed for municipalities, rural communities, and apartment complexes, handling large-scale organic waste.
Applications: Housing societies, rural villages, urban municipalities.
Advantage of Biogas
Biogas Plant Domestic, Industrial and Commercial
Biogas, naturally occurring gas that is generated by the breakdown of organic matter by anaerobic bacteria and is used in energy production. Biogas differs from natural gas in that it is a renewable energy source produced biologically through anaerobic digestion rather than a fossil fuel produced by geological processes. Biogas is primarily composed of methane gas, carbon dioxide, and trace amounts of nitrogen, hydrogen, and carbon monoxide. It occurs naturally in compost heaps, as swamp gas, and as a result of enteric fermentation in cattle and other ruminants.
Biogas Process Flow
Main process:
Pre-digester β Main digester β Biogas storage balloon β Purification system β Compressor β Filling station β Market
Bio-fertilizer process:
Pre-digester β Main digester β Slurry β Bio-manure
Technologies Used by Sewaf Energy
- Fixed Dome & Floating Drum Plants for small-scale use.
- Continuous Stirred Tank Reactors (CSTRs) for industrial applications.
- Plug Flow Digesters for agricultural waste.
- Hybrid Systems integrating waste management with energy recovery.
Features of Sewaf Energy Biogas Plants
- High-efficiency anaerobic digestion process
- Modular and scalable designs for different capacities
- Durable materials with 15β20 years lifespan
- Easy operation with low maintenance
- Dual benefit: energy + organic fertilizer
- Compliance with environmental norms
Benefits of Installing a Biogas Plant
1. Renewable Energy Generation
Produces clean fuel for cooking, heating, and electricity.
2. Waste Management
Converts kitchen waste, food scraps, and agricultural residues into usable resources.
3. Cost Savings
Reduces LPG, electricity, and chemical fertilizer expenses.
4. Organic Fertilizer
Slurry output improves soil fertility and reduces chemical inputs.
5. Environmental Benefits
Prevents methane release from decaying waste and reduces greenhouse gas emissions.
6. Energy Independence
Reduces dependence on conventional fuels and provides a reliable, self-sustained energy source.
Applications of Biogas Plants
- Households: Cooking fuel and fertilizer for gardens.
- Institutions: Energy for hostels, schools, canteens, and hospitals.
- Industries: Power for food processing, breweries, dairies, and agro-industries.
- Communities: Centralized waste-to-energy for apartments, municipalities, and rural projects.
Price Range
Sewaf Energy offers biogas plants across different capacities:
π° βΉ50,000 β βΉ25,00,000
(Depending on plant size, design, and application).
Why Choose Sewaf Energy?
- Experience: 200+ biogas projects executed globally.
- Expertise: Proven solutions for domestic, industrial, and community plants.
- Technology: Advanced digesters and hybrid energy systems.
- Sustainability: Promoting renewable energy and zero-waste living.
- Customer Support: Training, installation, and maintenance contracts.
- Customization: Tailored plants for individual and institutional needs.
- Sustainable, cost-effective energy for your operations
- The potential to sell excess biogas and organic fertilizer, unlocking new revenue streams
- A direct contribution to reducing greenhouse gas emissions and promoting the circular economy
Operating unit 1: Raw material Reception / Storage & Substrate / Feed Preparation
[Cow dung / organic waste feeding >crushing >Re-circulate material feed >mixer Tank]
Operating unit 2: Fermentation & Digesting
[Digester >Desulphurization >Pressure handling]
Operating unit 3: Condensate
[Overfill safety unit >float switch >Upper and lower switching-off point, Float switch >Minimum filling level safety unit >float switch]
Operating unit 4: Scrubbing unit
[H2s Scrubbing> C02 Scrubbing]
Operating unit 5: Gas utilization
[Compressed > High pressure to Cascade]
Operating unit 6: Organic Fertilizer unit
[Solid Liquid Separator > Screw Press or Filter Press > Centrifuge >Pressure Sand Filter >Ultra Filtration System > Reverse Osmosis]
Benefits of Biogas
β Renewable and eco-friendly energy
β Reduces odor and harmful emissions
β Produces natural, nutrient-rich organic fertilizer
β Supports local employment and economic growth
β Improves sanitation and hygiene
β Can reduce use of synthetic fertilizers
Sewaf Energy β Your Trusted Partner in Biogas
Whether for domestic, industrial, or commercial applications, our plants help you:
- Save on energy costs
- Reduce environmental impact
- Create new revenue streams
Sewaf Energy: Biogas Plant Process
A biogas plant converts organic waste into renewable energy through anaerobic digestion, a natural process carried out by microorganisms:
- Feedstock Collection β Organic materials such as agricultural waste, food waste, or animal manure are gathered.
- Digestion β The feedstock is placed in an airtight digester, where bacteria break it down in the absence of oxygen.
- Biogas Production β This process generates biogas, mainly composed of methane (CHβ) and carbon dioxide (COβ).
- Biogas Utilization β The biogas is used for cooking, heating, electricity generation, or as a vehicle fuel (after purification).
- Digestate Handling β The nutrient-rich byproduct, called digestate, can be used as an organic fertilizer.
This eco-friendly process turns waste into valuable energy and organic fertilizer, supporting a circular and sustainable economy.
Sewaf Energy: Biogas to CNG Production Process
Biogas produced from organic waste can be upgraded to Compressed Natural Gas (CNG), making it suitable for use as a clean vehicle fuel or for other applications.
The process includes:
- Biogas Generation β Organic waste undergoes anaerobic digestion in a biogas plant, producing raw biogas (mainly methane and COβ).
- Biogas Purification β The raw biogas is cleaned in a biogas upgrading unit, removing COβ, hydrogen sulfide, and moisture to increase methane concentration (usually > 90%).
- Compression β The purified biogas (now called Bio-CNG) is compressed to high pressure (200β250 bar) for storage and transportation.
- Utilization β Bio-CNG can be used as an eco-friendly vehicle fuel, or to replace conventional CNG in industries and households.
This process turns organic waste into a valuable, renewable, and cleaner alternative to fossil fuelsβhelping reduce emissions and promote sustainable energy.
Sewaf Energy: Biogas Bottling Process
The biogas bottling process upgrades raw biogas into high-purity Bio-CNG and stores it safely in cylinders for distribution and use:
- Biogas Generation β Organic waste (like agricultural residue or animal manure) undergoes anaerobic digestion, producing raw biogas.
- Purification & Upgrading β The raw biogas is purified to remove COβ, hydrogen sulfide, and moisture, increasing methane content to over 90%.
- Compression β The purified Bio-CNG is compressed to high pressure (typically 200β250 bar).
- Bottling / Filling β Compressed Bio-CNG is filled into cylinders or cascades, making it easy to store, transport, and distribute.
Distribution & Use β Bottled Bio-CNG can be used as a clean fuel for vehicles, industries, and householdsβhelping reduce dependence on fossil fuels.
This process efficiently transforms organic waste into a portable, eco-friendly energy source.
Β Sewaf Energy: β» Biogas Plant Solutions β Design, Installation & Maintenance
At Sewaf Energy, we offer comprehensive biogas plant solutions for domestic, industrial, and commercial applications. From customized design and engineering to installation, commissioning, and ongoing maintenance, our team ensures your biogas system operates efficiently and reliably.
Our advanced biogas technology converts organic waste into clean, renewable energy β reducing waste disposal costs, lowering carbon emissions, and producing valuable by-products like organic fertilizer and biogas for heat, electricity, or CNG.
Whether youβre in agriculture, food processing, municipal waste management, or any industry generating organic waste, we deliver turnkey biogas projects tailored to your specific needs. Trust us to transform waste into energy and drive your sustainability goals forward.
Ready to make a sustainable impact?
Contact us today to explore how a Sewaf Energy biogas plant can transform your business.
Hereβs a quick list of biogas digester types in one line each:
- Fixed Dome Digester β Underground chamber with a fixed gas storage dome.
- Floating Drum Digester β Gas storage drum floats on the slurry surface.
- Balloon/Bag Digester β Flexible plastic or rubber bag for gas and slurry storage.
- Plug Flow Digester β Long, narrow tank where waste flows in one direction.
- Complete Mix Digester β Fully stirred tank with uniform mixing.
- Anaerobic Filter Digester β Waste passes through a fixed bed of media for bacterial growth.
- Covered Lagoon Digester β Large, lined pond with a gas-tight cover.
- Two-Stage Digester β Separates hydrolysis/acidogenesis from methanogenesis.
- Dry Batch Digester β Solid-state digestion for high-solid waste.
- Upflow Anaerobic Sludge Blanket (UASB) β Waste flows upward through dense bacterial sludge.
- Biogas Plant Installation & Commissioning β Turnkey setup from start to finish.
Biogas Plant Services
- Biogas Plant Design & Engineering β Customized solutions for domestic, commercial, and industrial needs.
- Operation & Maintenance (O&M) β Regular monitoring, servicing, and efficiency management.
- Upgradation of Existing Biogas Plants β Modernizing old systems for higher gas yield.
- Biogas to Power Solutions β Conversion of biogas into electricity and heat (CHP systems).
- Bio-CNG Production Units β Purification and bottling of biogas as compressed renewable fuel.
- Waste Management Solutions β Handling of kitchen, agricultural, and industrial organic waste.
- Slurry Management & Organic Fertilizer Supply β Utilizing byproducts as eco-friendly fertilizer.
- Consulting & Feasibility Studies β Project planning, financial viability, and technical guidance.
Biogas Plant Equipment List
Feedstock Handling & Pre-Treatment
- Feed Hopper / Storage Tank β Stores raw material (cow dung, food waste, agro-waste, etc.)
- Feed Preparation Tank / Mixing Tank β For slurry preparation with water
- Chopper / Shredder / Grinder β Reduces particle size of feedstock
- Slurry Pump / Screw Pump β Transfers prepared slurry into digester
Anaerobic Digestion System
- Anaerobic Digester Tank (Reactor) β Main chamber where biogas is produced
- Agitator / Stirrer (optional) β Ensures mixing of slurry (avoids scum layer)
- Heating System (for large plants) β Maintains mesophilic/thermophilic conditions
- Gas Dome / Gas Holder (if fixed dome design) β Collects generated gas
- Biogas Storage Balloon / Gas Bag β Temporary gas storage (for flexible plants)
Gas Handling & Utilization
- Gas Piping Network β Transfers biogas to utilization points
- Gas Flow Meter β Measures biogas production rate
- Gas Blower / Compressor β Pressurizes gas for storage/utilization
Biogas Purification System
- HβS Scrubber (Iron Sponge / Activated Carbon) β Removes hydrogen sulfide
- Moisture Trap / Condensate Trap β Removes water vapor
- COβ Scrubber (optional) β For upgrading to biomethane
- Biogas Bottling / CNG Compressor (for large plants) β Converts to Bio-CNG
Digestate (Slurry) Treatment
- Outlet Chamber / Slurry Tank β Collects digested slurry (bio-slurry)
- Dewatering Equipment (Screw Press / Filter Press) β Separates liquid and solid fraction
- Drying Beds (optional) β For solid manure drying
- Slurry Pumps β Transfers slurry for reuse or disposal
Power Generation (Optional)
- Biogas Engine / Genset β Generates electricity from biogas
- Burner / Stove / Boiler β Direct biogas utilization for cooking/steam
- Combined Heat and Power (CHP) Unit β Produces electricity + heat
Safety & Control Systems
- Flame Arrestor / Non-return Valve β Prevents backfire
- Pressure Relief Valve / Safety Valve β Releases excess pressure
- Pressure Gauge β Monitors system pressure
- Control Panel (Electrical & Automation) β SCADA/PLC for large plants
What is biogas?
Biogas is a renewable fuel produced from the anaerobic digestion of organic waste.
What is the main component of biogas?
Methane (CHβ), usually 50β70%.
What waste materials are used to produce biogas?
Food waste, animal manure, sewage sludge, and agricultural residues.
What is the by product of biogas production?
Nutrient-rich slurry used as organic fertilizer.
What is the typical pH range for biogas digestion?
Between 6.8 and 7.5.
How is biogas used?
For cooking, electricity generation, heating, and vehicle fuel.
What is the calorific value of biogas?
Around 20β24 MJ/mΒ³.
What type of bacteria produce methane in biogas plants?
Methanogenic bacteria.
Can biogas reduce greenhouse gas emissions?
Yes, it prevents methane release from waste and replaces fossil fuels.
How long does biogas production take?
Typically 20β30 days in a mesophilic digester.
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