Technical Overview

Technical Information:
 
After a thorough study, scrutinising various regionally used biodigester models, a fixed dome design, the ‘Farmer’s Friend Biodigester’ has been selected as the most appropriate model for mass dissemination in Cambodia by the National Biodigester Programme.  This design is based on the ‘Deenbandhu’ model which is in use in great numbers for more than 20 years in India.
 
The design selection criteria included:
  • durability, reliability and maintenance requirements;
  • local availability of construction materials;
  • appropriateness of the design for areas with high water tables;
  • costs.

 

The design is presently available in 5 different sizes: 4, 6, 8, 10 and 15 m3. The table below gives the daily required input, gas production and fuelwood equivalent per plant volume.
 

Biodigester size
Daily dung feeding (kg)
Daily gas production (m3)
Use of Biogas Stove (hour)
Use of Biogas Lamp (hour)
Fuelwood replacement value (kg)1
4
20 to 40
0.8 to 1.6
2 to 4
8-16
4 to 8
6
40 to 60
1.6 to 2.4
4 to 6
16-24
8 to 12
8
60 to 80
2.4 to 3.2
6 to 8
24-32
12 to 16
10
80 to 100
3.2 to 4.0
8 to 10
32-40
16 to 20
15
100 to 150
4.0 to 6.0
10 to 15
40 - 60
20 to 30

1 Based on a commonly used, low tech, woodstove with a 10% efficiency rate. 1 m3 biogas will replace about 5kg of fuelwood.

 

As of May 2009, 14 Training of Trainers, 60 officers of Provincial Departments of Agriculture and over 330 masons have been trained to construct, manage and coordinate the program activities regarding procedures.
 
A technical training centre has been established at the premises of ‘Preah Kossomak Polytechnical Training Institute’ in Phnom Penh. 

 

The promotion is the necessary activities such as village workshops as well as pre-construction trainings.

 

Mainly, biogas users can apply biogas in:
 
 
  
 
Designed by: Manich