EECOPALSA

Energia Ecologica DePalcasa  --  Palm Oil Mill --  Honduras

The Palm Oil Mill has been designedwith two anaerobic BioGas collection lagoons, followed by four open-airlagoons.  The processing water is firstpassed through a cooling tower (71K COD / 48K TSS) and then goes into the twoparallel BioGas Lagoons.  The flow is 5to 7 m3 per hour, producing some 300 m3 gas (50-60% methane) / hour in eachcollection lagoon, capable of running two 633KW Generators.

The BioGas Lagoons are 70 m X 35 m x 4m deep each, with an effluent of 10K COD and 25K TSS.  BioGas Retention times is over 160 days,which will require a dosage schedule that is extended over time. The wastewater passes through a solids separator, and then on through four open airlagoons, each 35 m X 35 m X 4 deep.  Thefinal effluent is used as irrigating water on the adjacent farmland, thoughduring heavy rains there is some waste water release.

AquaClean benefits for this BioGas Systemwould be:

GasVolume increase of 20 to 30 percent.

Significantreduction in H2S, and therefore longer life of generators.

Reduction of sludge build upin the Anaerobic Lagoons, saving in shut down sludge removal frequency…as wellas lower solids removal by trucks from the separator.

Significant reduction ofodor from the lagoons and irrigation areas.

Overall reduction in COD /BOD / TSS…bring the discharge into compliance, while enhancing the fertilizervalue for irrigation by some 30 to 50 percent improvement in crop yields.

Recommended treatment plans would be appliedas outlined below:

 

Week             Each BioGas Lagoon         Open AirPonds                                                                             

Gallons                    One                                Two                 Three             Four               Five                Six

One               1(twice per week)           1(twice per week)           4                   4                    2                    1

Two               1(twice per week)           1(twice per week)           2                   2                    2                    1

Three            1(twice per week)           1(twice per week)           2                   2                    1                    1

Four              1(twice per week)           1(twice per week)           1                   1                    ½                    ½

Thereafter     ½ (twice perweek)          ½(twice per week)          1                   1                    ½                    ½

 

First month would be 43 Gallons, withweekly maintenance of 5 Gallons thereafter. This is certainly economical on a cost / benefit analysis…and is inkeeping with their Carbon Credit and Environmental Operating Methods.