Biomass, including garden weeds, aquatic weeds and various organic waste contains proteins, fats and long-chain carbohydrates. Such characteristics make the material easier to digest by mikrooragnisme or easily treated biologically. In fact, especially plant material containing cellulose, sugar and high carbohydrate, even more potential to produce biogas greater than source of cow dung and other waste materials.

In order to participate in overcoming the problem size reduction of solid waste ( organic waste and various plants) as biodigetser subtract, introduced digestibility pump ( grinder pumps) .

Pump with a pumping capacity of 40 liters / minute, siphoning material from depth ( Head) 20 m, 0.55 KW input, single phase, 220 Volt, has a weight of 11.9 kg. For raw materials instead of liquid ( grass, garbage, water weeds, weed the garden) , the use of these pumps will help solve problems of charging the digester - especially large scale. Entered subtract with 1 pump unit can also be made for the use of charging to tens of digester unit.

Pump connected to the pipe in parallel guarantees of the risk of raw material delays in filling tub. Using a grinder pump smallest ( 0.55 KW, Capacity 40 liters / min) with a power consumption of 0.55 KW or a total of about 2 KWH per day ( electricity cost Rp 5400) can be considered to replace the equivalent cost of 3 person labour.