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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 Equipments 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: 
The Bio Digester Technology is a clean technology that does not pollute ground water. The outlet water is enriched with minerals and is odorless, colorless and free of pathogens and can be used for gardening or recycled for flushing. The technology does not require any electricity and the digestion takes place in an anaerobic environment in a sealed container due to bacterial activity.There is no sedimentation and therefore the tank does not require evacuation at all. As the effluent water is safe it can be used wherever there is a lack of sewage or drainage systems.  Most importantly, the bio digester is to be charged with the bacterial enriched inoculums only once at the time of installation and after that the bacterial will multiply automatically. 
 
ADVANTAGES OF BIO TOILET:
  • 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
 
THE TECHNOLOGY HAS TWO MAJOR COMPONENTS
  • 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.
 
MODELS OF BIOTOILET
 
BFE SERIES WITHOUT TOILET CABIN FOR EXISTING TOILET
 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 
 
BD SERIES WITH TOILET CABIN ( BIODIGESTER TANK WITH TOILET CABIN)
 
 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
 
We also manufacture bio-toilet custom designed as per customer requirement up to 5000 users per day.

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