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Comparison of the Digesters
Advantages of MDBR
First time in India HIT developed MDBR (Multi Domes Bio-Gas Reactor) technology.
CSTR- (Continuous Stirred-Tank Reactor)
MDBR is the most advanced technology used for waste degradation and enhancement of biogas production. Easy to maintain without scum and chocking problem.
It’s a unique design comprising of Multi Domes, Multi Chambers Multi Inlets & Outlets with expandable option Bio-Gas Reactor.
Single chamber with single inlet, outlet.
There is no scum and chocking problem due to the unique design of the Digester which consists of multi inlets and multi outlets
Vertical cylindrical shape
Due to the square type design and size compatibility the Digester is expandable to our convenience.
100 Cum to any Capacity
500 Cum to any Capacity
Dome/ Top mounted digester
Multi FRP Domes with upward and downward movements in the water seal.
Single non FRP Dome / Balloon.
Installation of FRP Domes is much easier than Fixed Dome due to less weight. Zero maintenance up to 10 years when compared to non FRP domes
Specialized bricks used for the construction of Baffled walls / Internal walls in the digester for the enhancement of surface
Bio-film used to increase the surface area.
“Surface area” is the key factor for increasing Bio-Gas Production. More than 50% of the surface
Bottom Mixing by using Pump
Stirring constantly with
Zero power consumption and less maintenance
Primary Digester Technology was introduced for Aerobic hydrolysis of Raw material.
Reduction in Digester volume up to 50 % and thereby reduces the cost of civil construction
HRT (Hydraulic Retention Time)
HRT reduction due to the increase in the surface area because of increase in microbial density.
SRT (Solid Retention Time)
Slurry outlet solids is only 2% due to which bio-gas production will be increased by 15 – 20 %
Solids loading rate
Pressure relief valves
Pressure relief valves are not required due to floating Domes.
Pressure relief valves required due to fixed dome.
Easy to handle &maintain
Gas storage increases up to 10% due to floating dome.
Less Gas storage due to fixed dome.
The size of the Bio-gas storage balloon reduced
MDBR is a proprietary item of HIT-Patent Applied .
HIT will provide the technology and the necessary designs based on agreed terms and conditions
PLANT & MACHINERY WITH
Advantages of HIT
From 1200 to 10000 kgs of Bio-CNG
From 1200 to 10000 kgs of Bio-CNG
20% of less space required than others.
HIT developed a technology for the pre-treatment of input raw material to hydrolyze which reduces the main Digester volume considerably
There is no Pre-treatment process for the input raw material.
By using Hydrolysis technology input raw material like Poultry litter, Napier Grass and any type of Agriculture waste can be converted in to Bio-gas.
CSTR- 75-100 Hp power required for mixing.
There is no mechanical mixing system. Hence no power is required for stirring process inside the digester.
Slurry collected in overhead tanks which is connected tothe Decanter separatesthe solids in the slurry by gravity.
Sludge pumps are required for pumping the slurry in to decanter.
No power required for slurry pumping
10% of the total produced Bio-gas will be stored
Imported single fixed dome will be used to store the produced Bio-gas.
Local made FRP domes and Balloon will be used which reduces the cost up to 50% when compared with others.
PSA Scrubbing processer is used for the removal of CO2.
PSA or Water Scrubbing
Purification system will be monitored through SCADA system in printing mode.
250 bar compressor with VFD system.
Ordinary Compression systems are used.
Power consumption will reduce automatically in the co-processing
Bio-CNG will be stored in Cylinders with 200-250
Bio-CNG will be stored in Cylinders with 200-250 bar pressure.
110 kw power required for 2400kgs capacity plant.
200kw power required for 2400kgs capacity plant.
95 kw power will be saved