Bio Toilet/ Bio Digester has been developed in association with DRDO (Defence research and development organization) – Ministry of Defense , Govt. of India after 20 years of R&D. Bio Digester converts the human waste and the all organic waste in clean re-usable odor free water and Bio Gas. ALFA THERM LIMITED is an ISO 9001:2008 company established in 1989 and engaged in manufacturing of Bio Toilets/Biodigester, Incinerators, HVAC Fans, MSW Equipment and process heating systems. We are the largest manufacturer of such products in India and have a customer base of over 15,000 satisfied clients in India and abroad.We are also one of the first companies to have acquired the TOT (Transfer of Technology Holder) by DRDO (Defence Research and Development Organization) and have more than 7 years of experience in design, development and manufacturing of Bio Toilets /Bio Digesters for high altitude and plain areas. We have executed bio digester projects in remote high altitude locations even at altitudes of 14,000 ft with temperature of -20 deg c.Our Biotoilets have been in successful operation with several government organizations in India: Indian Army, ITBP, BSF, BSF, DDA, MCD, Indian Railways, BPCL,SAIL ,IFFCO, to name a few. Several corporate as part of their CSR activities have installed our Biotoilets in rural areas. Our installation can be found in New Delhi, J&K, Arunachal Pradesh, Sikkim, West Bengal, Gujarat, Rajasthan, Punjab. Our make has been approved by MES and ITBP in J&K and more than 250 Nos. of “Alfa-Therm” Bio-digesters have been supplied and installed for MES Projects in J&K, Sikkim and Arunachal Pradesh
AN OVERVIEW OF BIODIGESTER TECHNOLOGY:
- Flush and forget technology.
- Does not require any sewage connection
- Lesser space requirements
- Odourless, colourless, pathogen-free effluent.
- One time charging bacteria.
- Digests organic solids in a biological way.
- Prevents human waste and untreated water from contaminating groundwater.
- Offers an alternative to dumping of wastes into rivers, lakes and fields in rural and semi-rural areas where there is no sewage systems.
- Effluent (i.e. the water) can be used as fertilizer for soil, to water plants.
- Does not require cleaning or evacuation of tank as incase of septic tank
- Does not require any power or consumables to operate.
The human waste will enter the tank from the top and the innoculum inside the tank will start treating the waste. On dry weight basis 90%-95% of the solid waste is reduced. The gaseous effluent (bio-gas) is continuously left off to the atmosphere. Liquid effluent is drained from the side to any surface or soak pit (at a distance of 4 to 5 ft from biodigestor tank) without any environmental hazards. It can also be safely used for landscaping and irrigation purpose.
| S.NO | STAGES | FUNCTION |
| 1 | HYDROLYSIS | Particulates solubilised and large polymers converted tosimpler monomers |
| 2 | ACIDOGENESIS | Simple monomers converted to volatile fatty acids |
| 3 | ACETOGENESIS | Volatile fatty acids converted to acetic acid,CO2 and H2 |
| 4 | METHANOGENESI | Acetate converted into CH4 and CO2 while H2 consumed |
- Anaerobic microbial innoculum
- Biodigestor Tank
- A consortium of anaerobic bacteria has been formulated and adopted to work at very low temperature. This is the component which acts as inoculum to the biodigestor and converts the organic waste into methane and carbon dioxide. The anaerobic process inactivates the pathogens responsible for water born diseases.
- Biodigestor serve as reaction vessel for bio-methane and provides the anaerobic conditions and required temperature for the bacteria. The optimum temperature is maintained by microbial heat, insulation of the reactor (required only in glacier installation) and solar heating.
| SR. NO. | MODEL NO. | CAPACITY OF BIODIGESTER (LITERS) | USERS PER DAY |
| 1 | BFE-5 | 700 Liters | Up to 8 |
| 2 | BFE-10 | 1000 Liters | Up to 15 |
| 3 | BFE-25 | 1500 Liters | Up to 25 |
| 4 | BFE-35 | 2000 Liters | Up to 35 |
| 5 | BFE-50 | 3000 Liters | Up to 50 |
| 6 | BFE-70 | 4000 Liters | Up to 70 |
| 7 | BFE-90 | 5000 Liters | Up to 90 |
| 8 | BFE-115 | 6000 Liters | Up to 115 |
| 9 | BFE-125 | 8000 Liters | Up to 125 |
| 10 | BFE-200 | 10000 Liters | Up to 200 |
| SR. NO. | MODEL NO./SEATS | CAPACITY OF BIODIGESTER (LITERS) |
| 1 | BD-1-SINGLE PAN | 700/1000 Liters |
| 2 | BD-2-TWO PAN | 1500 Liters |
| 3 | BD-2M-TWO PAN | 2000 Liters |
| 4 | BD-2L-TWO PAN | 3000 Liters |
| 5 | BD-3-THREE PAN | 4000 Liters |
| 6 | BD-4-FOUR PAN | 3000/4000 Liters |
| 7 | BD-5-FIVE PAN | 5000 Liters |
| 8 | BD-6-SIX PAN | 6000 Liters |
| 9 | BD-8-EIGHT PAN | 8000 Liters |
| 10 | BD-10-TEN PAN | 10000 Liters |