Biodigester Log - Revision history

Catarina at 13:25, 14 March 2018

2018-03-14T13:25:34Z

← Older revision		Revision as of 13:25, 14 March 2018
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	See [[Biodigester]] for working page.		See [[Biodigester]] for working page.

			=Wed Mar 14, 2018=
			A second test of draining water into the digester revealed that opening the gas valve did not fix the backflow issue. It turned out to be syphoning after all: after closing the inlet valve, we could hear it sucking air as water backflowed into the sink.

			Marcin installed a one-way valve under the sink. This appeared to work sometimes, but not all the time. We decided to break the syphoning, rather than just relying on the valve, by connecting the inlet pipe to the stack vent.

	=Tue Mar 13, 2018=		=Tue Mar 13, 2018=

Catarina: /* Tue Mar 13, 2018 */

2018-03-13T16:50:53Z

Tue Mar 13, 2018

← Older revision		Revision as of 16:50, 13 March 2018
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	=Tue Mar 13, 2018=		=Tue Mar 13, 2018=
	Marcin connected kitchen sink to the biodigester on the evening of March 12, 2018. The next day Catarina, unaware of how the connections been made, used the kitchen sink. Log of messages:		Marcin connected kitchen sink to the biodigester on the evening of March 12, 2018. At this stage, Marcin hadn't yet installed the one-way valve under the kitchen sink and had closed off the gas outlet on the bio-digester. The next day Catarina, unaware of how the connections been made, used the kitchen sink. Log of messages:

	C: I did the dishes, drained the water and all seemed to go well. Then I came to the computer to congratulate you on a good job. But when I next looked at the sink a few minutes later, it was full of dirty water. It seems water is backing up ~~to there~~. Is this the water that is supposed to remain in the pipes and kept in check by the one-way valve? Or could it be an issue with the level of the sink in relationship to the level of the overflow?		C: I did the dishes, drained the water and all seemed to go well. Then I came to the computer to congratulate you on a good job. But when I next looked at the sink a few minutes later, it was full of dirty water. It seems water is backing up into the sink. Is this the water that is supposed to remain in the pipes and kept in check by the one-way valve? Or could it be an issue with the level of the sink in relationship to the level of the overflow?

	I'm trying to trace the source of the issue, but it's puzzling.		I'm trying to trace the source of the issue, but it's puzzling.

	At first I thought it was the water left at the top of the vertical length of pipe that was backing up into the sink, which is at a lower level. But if that was the case, why wouldn't this have happened before it was hooked up to the digester? It would make much more sense if it had been so. So I can neither understand why it didn't happen before nor why it's happening now. My best guess is that it's either syphoning or there is some pressure from the digester that is sending water back into the sink.		At first I thought it was the water left at the top of the vertical length of pipe that was backing up into the sink, which is at a lower level. But if that was the case, why wouldn't this have happened before it was hooked up to the digester? It would make much more sense if it had been so. So I can neither understand why it didn't happen before nor why it's happening now. My best guess is that it's either syphoning or there is some pressure from the digester that is sending water back into the sink.

	The water backing up into the sink continues to rise, much more slowly now. I don't know much about it, but suspect that this means it can't be just gravity. It's probably syphoning. I will allow the sink to keep filling, just to see what's happening, but will bucket it out once it gets close to overfilling. If this is indeed syphoning, the entire contents of the digester will want to flow into the sink, so I'm probably going to spend the day bucketing out water from the sink.

	More details:		More details:
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	https://www.youtube.com/watch?v=CZmP0vsRBZ8		https://www.youtube.com/watch?v=CZmP0vsRBZ8

	M: I closed off the gas outlet on the biodigester. When you pump water into it, it's like filling an already full balloon—it ~~send~~ the water back. To temporarily address this, you can open the window then open the gas valve, then pump out the water from sink.		M: I closed off the gas outlet on the biodigester. When you pump water into it, it's like filling an already full balloon—it sends the water back. To temporarily address this, you can open the window, then open the gas valve, then pump out the water from sink.

	Catarina did this and no more water backed up into the sink.		Catarina did this and no more water backed up into the sink.

Catarina: /* Tue Mar 13, 2018 */

2018-03-13T16:48:05Z

Tue Mar 13, 2018

← Older revision		Revision as of 16:48, 13 March 2018
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	M: Apparently the way the 2" overflow pipe works, it was easier for the pressure to release over the thinner 1" pipe, which may have acted as a siphon. The 2" is 18" below water, so overflow is facing 18" of effective head.		M: Apparently the way the 2" overflow pipe works, it was easier for the pressure to release over the thinner 1" pipe, which may have acted as a siphon. The 2" is 18" below water, so overflow is facing 18" of effective head.


	~~Gas outlet closed. Water backing up into the sink.~~

	=Tue Oct 18, 2016=		=Tue Oct 18, 2016=

Catarina: /* Tue Mar 13, 2018 */

2018-03-13T16:47:47Z

Tue Mar 13, 2018

@@ Line 2: / Line 2: @@
 =Tue Mar 13, 2018=
-Kitchen sink connected to biodigester. Gas outlet closed. Water backing up into the sink.
+Marcin connected kitchen sink to the biodigester on the evening of March 12, 2018. The next day Catarina, unaware of how the connections been made, used the kitchen sink. Log of messages:
 =Tue Oct 18, 2016=

Catarina at 15:52, 13 March 2018

2018-03-13T15:52:32Z

← Older revision		Revision as of 15:52, 13 March 2018
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	See [[Biodigester]] for working page.		See [[Biodigester]] for working page.

			=Tue Mar 13, 2018=
			Kitchen sink connected to biodigester. Gas outlet closed. Water backing up into the sink.

	=Tue Oct 18, 2016=		=Tue Oct 18, 2016=

Marcin at 23:27, 18 October 2016

2016-10-18T23:27:35Z

← Older revision		Revision as of 23:27, 18 October 2016
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	See [[Biodigester]] for working page.		See [[Biodigester]] for working page.

			=Tue Oct 18, 2016=
			"Anything but human shit in a 1/4" insinkerator will soon see it burnt out and blades so dulled it's useless- 1 hp on grass and garbage digester appears to work well." Look into a septic shredder pump as it will slurry anything and pump shit from a reservoir up to a digester no sweat - '''macerator lift pumps'''.

	=Sun Oct 16, 2016=		=Sun Oct 16, 2016=

Marcin: /* Sun Oct 16, 2016 */

2016-10-17T06:05:14Z

Sun Oct 16, 2016

← Older revision		Revision as of 06:05, 17 October 2016
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	*Janice is a good contact, Solar Cities - and 610-745-4403 for Global Vertical Farms - [http://www.globalverticalfarmsllc.com/contact.html]		*Janice is a good contact, Solar Cities - and 610-745-4403 for Global Vertical Farms - [http://www.globalverticalfarmsllc.com/contact.html]
	*Contacted completebiogas@GMail.com - https://completebiogas.com/workshops.html		*Contacted completebiogas@GMail.com - https://completebiogas.com/workshops.html
			*Contacted Dan on biodigester review on 3 cu m system.

Marcin: /* Sun Oct 16, 2016 */

2016-10-17T05:45:59Z

Sun Oct 16, 2016

← Older revision		Revision as of 05:45, 17 October 2016
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	*Sent inquiry to [http://puxinbiogas.en.alibaba.com/product/263927194-220435925/PUXIN_biogas_storage_bag.html] for 3 cu m biogas bag		*Sent inquiry to [http://puxinbiogas.en.alibaba.com/product/263927194-220435925/PUXIN_biogas_storage_bag.html] for 3 cu m biogas bag
	*Janice is a good contact, Solar Cities - and 610-745-4403 for Global Vertical Farms - [http://www.globalverticalfarmsllc.com/contact.html]		*Janice is a good contact, Solar Cities - and 610-745-4403 for Global Vertical Farms - [http://www.globalverticalfarmsllc.com/contact.html]
			*Contacted completebiogas@GMail.com - https://completebiogas.com/workshops.html

Marcin: Created page with "See Biodigester for working page. =Sun Oct 16, 2016= *Sent inquiry to [http://puxinbiogas.en.alibaba.com/product/263927194-220435925/PUXIN_biogas_storage_bag.html] for 3..."

2016-10-17T05:23:33Z

Created page with "See Biodigester for working page. =Sun Oct 16, 2016= *Sent inquiry to [http://puxinbiogas.en.alibaba.com/product/263927194-220435925/PUXIN_biogas_storage_bag.html] for 3..."

New page

See [[Biodigester]] for working page.

=Sun Oct 16, 2016=
*Sent inquiry to [http://puxinbiogas.en.alibaba.com/product/263927194-220435925/PUXIN_biogas_storage_bag.html] for 3 cu m biogas bag
*Janice is a good contact, Solar Cities - and 610-745-4403 for Global Vertical Farms - [http://www.globalverticalfarmsllc.com/contact.html]