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Slurry separation
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<blockquote data-quote="frederick" data-source="post: 8852431" data-attributes="member: 11063"><p>[ATTACH=full]1126748[/ATTACH]</p><p>So this is the sand we are recovering with a sand lane. This will halve the amount we need this year. All the rest of the sand is still with the fibres. We have had to clean the tower out after it's first year for the roof. There was some sediment but this was all organic matter. No detectable sand made it to the tower.</p><p></p><p>This was using a sperrin separator for 270 cows housed for 6 months. No noticeable wear yet.</p><p></p><p>We are running a landia submersible pump. Our number of cows wore one impeller out over the winter. The piston pumps are a lot more expensive and installation even more expensive if you need to build a dry sump for it. An additional 18-20k on the pump will pay for a few rebuilds. Any bigger than 300 or fully housed and piston is probably the way to go.</p><p></p><p>I have avoided any pumps apart from up to the separator. I have heard even with a piston pump if the consistency is wrong and the pipe doesn't fully drain the sand will rapidly settle out in any pipe simply used to transfer slurry.</p><p></p><p>None of this comes cheap but it does the job</p></blockquote><p></p>
[QUOTE="frederick, post: 8852431, member: 11063"] [ATTACH type="full"]1126748[/ATTACH] So this is the sand we are recovering with a sand lane. This will halve the amount we need this year. All the rest of the sand is still with the fibres. We have had to clean the tower out after it's first year for the roof. There was some sediment but this was all organic matter. No detectable sand made it to the tower. This was using a sperrin separator for 270 cows housed for 6 months. No noticeable wear yet. We are running a landia submersible pump. Our number of cows wore one impeller out over the winter. The piston pumps are a lot more expensive and installation even more expensive if you need to build a dry sump for it. An additional 18-20k on the pump will pay for a few rebuilds. Any bigger than 300 or fully housed and piston is probably the way to go. I have avoided any pumps apart from up to the separator. I have heard even with a piston pump if the consistency is wrong and the pipe doesn't fully drain the sand will rapidly settle out in any pipe simply used to transfer slurry. None of this comes cheap but it does the job [/QUOTE]
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