March 13, 2010
Since the tank was made for storing potable water rather than for use as a biogas digester, the tank needed to be fit for its piping before it could even be taken outside to be set in place. The lid needed two holes drilled into it and the tank itself had two extra holes already in place that needed to be filled.
The two extra holes that needed filling proposed a bit of an initial problem since we had not anticipated pre manufactured holes in our tank. The problem was soon resolved with the rubber seals that came with the tank along with a few extra supplies we had on hand such as polymer glue and two-inch lids, we were able to devise a way to seal the holes.
The two holes in the lid are for the effluent for the decomposed
material to come out. The first is a small hole for a one inch pipe to glide smoothly through without having discharge around the seal. This pipe will be releasing enriched liquid from the top of the tank to prevent it from getting too full. In order to make this happen, an ''L'' shaped pipe was constructed for the extra liquid at the top of the tank to flow through. Then a a hole was drilled in the lid and
lined with natural rubber tubing and the long pipe was pushed through the hole. There was some guess work here to make the hole big enough for the pipe to slide freely, but not too big that the seal is no longer effective.
After doing this first hole, the second hole was a bit easier since we only had to get a two inch pipe to fit snugly with a rubber seal. The problem camewhen we went to attatch the valve that will release the decomposed food sludge. The ball valve we had purchased would not budge! So really, we now have a heavy pipe with a handle on it. We will need to go back to Iquitos to find a better valve.
Since the tank was made for storing potable water rather than for use as a biogas digester, the tank needed to be fit for its piping before it could even be taken outside to be set in place. The lid needed two holes drilled into it and the tank itself had two extra holes already in place that needed to be filled.
The two extra holes that needed filling proposed a bit of an initial problem since we had not anticipated pre manufactured holes in our tank. The problem was soon resolved with the rubber seals that came with the tank along with a few extra supplies we had on hand such as polymer glue and two-inch lids, we were able to devise a way to seal the holes.
The two holes in the lid are for the effluent for the decomposed
material to come out. The first is a small hole for a one inch pipe to glide smoothly through without having discharge around the seal. This pipe will be releasing enriched liquid from the top of the tank to prevent it from getting too full. In order to make this happen, an ''L'' shaped pipe was constructed for the extra liquid at the top of the tank to flow through. Then a a hole was drilled in the lid and
lined with natural rubber tubing and the long pipe was pushed through the hole. There was some guess work here to make the hole big enough for the pipe to slide freely, but not too big that the seal is no longer effective.After doing this first hole, the second hole was a bit easier since we only had to get a two inch pipe to fit snugly with a rubber seal. The problem camewhen we went to attatch the valve that will release the decomposed food sludge. The ball valve we had purchased would not budge! So really, we now have a heavy pipe with a handle on it. We will need to go back to Iquitos to find a better valve.
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