4 ms·

I've pitched this before, but here goes: If someone can come up with an adequate filter for pharmaceuticals, it seems that the recapture of human waste is our

I've pitched this before, but here goes: If someone can come up with an adequate filter for pharmaceuticals, it seems that the recapture of human waste is our best path forward. Yes, there is a logistics problem for transferring it, potentially, dehydration is the best method, but we consume the output of our farms, and it seems that on a conservation of mass basis, we should be sending it back to the farms when we're done with it.

j4ship 9y ago
Or you can just account for not collecting waste of people that take drugs from a list ... you could have people that are part of the program and get some kind of crypto token for truning in their grade-A poo. Well call them the Elite Shitters
- nkrisc 9y ago
  Well I don't think you'd collect waste at the individual level, that seems absurdly arduous. Most developed nations already have an excellent pipeline (literally) for collecting and centralizing human waste. It would probably make more sense to collect it somewhere along the line at sewage treatment facilities. There would still be many other challenges with that.
mooman219 9y ago
If by waste you mean excrement then this is not a good idea in the slightest. First you have bacteria, viruses, and parasites that must be killed off. If it isn't properly treated, you end up with a situation similar to that of what we saw in the recent North Korean refugee who suffered from parasites. After that, as you mentioned, there are pharmaceuticals which are notoriously hard to filter out. Next on the list is heavy metals that can become concentrated in excrement. Even after addressing these concerns, if the process to treat the waste is too costly, then there goes the benefit. I would compare some of the challenges this faces to those that are faced when turning salt water into fresh water through desalination (probably not a direct comparison).
- simook 9y ago
  I encourage you to do a little more research on this. Bad and good bacteria exists in this world regardless of how Human's try to control it. Waste processing plants use a combination of bacteria and UV to treat wastewater. That process is very similar to what nature does with animal and human waste. However, moving human waste is a tough problem and requires substantial resources (fossil fuels, infrastructure, electricity, etc...) and the act of moving it is usually the source of contamination. I think it's completely valid and beneficial to compost human waste, but that needs to be done on a local/individual scale.
- crpatino 9y ago
  Well, the problem with that is that we ought to be doing the filtering anyways, prior to dumping our excrement to the environment. So, if we are going to get serious about that, creating a viable business model seems like the obvious first step. The alternative is to keep replenishing organic matter in the soil with non-renewables; keep trying and failing, at great financial cost, to clean up our waste before dumping it back to the environment; and end up with damaged farmland and screwed waterways anyways.
kwk1 9y ago
Most of the mass in plants comes from the air, and most of the mass of soil loss is from erosion and runoff, so this wouldn't avert loss, just reconnect mass flows for the process for natural soil generation, while not altering the processes that lead to the unnatural rates of loss in the first place.
mccoyspace 9y ago
There was a story about this in Motherboard just the other day. Tl,dr— Metals and drugs are a big problem *edit: spelling https://motherboard.vice.com/en_us/article/8q8xnk/turns-out-that-using-human-poop-to-fertilize-crops-might-not-be-such-a-great-ide https://motherboard.vice.com/en_us/article/8q8xnk/turns-out-...
- abakker 9y ago
  It is worth noting that not all crops absorb toxic metals in the soil, and some crops/plants sequester certain metals extremely well - (Kale/Thorium, Garlic/Selenium). Possibly we could use certain crops to ameliorate certain metal toxins.
  - haZard_OS 9y ago
    We already do. It's called phytoremediation. Some of us even make a pretty decent living specializing in the field.
- fencepost 9y ago
  See also http://www.slate.com/articles/news_and_politics/roads/2016/07/taranto_italy_is_decontaminating_its_land_by_cultivating_hemp.html http://www.slate.com/articles/news_and_politics/roads/2016/0...
deleted 9y ago
[deleted]
maxerickson 9y ago
Lots of sewage sludge is spread on farms in the US. https://www.epa.gov/biosolids https://www.epa.gov/biosolids
thinkcontext 9y ago
DC's water treatment plant does this. Solid waste goes into a biodigester which produces methane which is used to create electricity to help run the plant. The other product is "biosolids" which are rated safe for use on food crops. https://www.dcwater.com/biosolids https://www.dcwater.com/biosolids This wouldn't be nearly enough though. The amount of human waste is, however, dwarfed by animal waste.

j4ship 9y ago

Or you can just account for not collecting waste of people that take drugs from a list ... you could have people that are part of the program and get some kind of crypto token for truning in their grade-A poo. Well call them the Elite Shitters

nkrisc 9y ago
Well I don't think you'd collect waste at the individual level, that seems absurdly arduous. Most developed nations already have an excellent pipeline (literally) for collecting and centralizing human waste. It would probably make more sense to collect it somewhere along the line at sewage treatment facilities. There would still be many other challenges with that.

mooman219 9y ago

If by waste you mean excrement then this is not a good idea in the slightest. First you have bacteria, viruses, and parasites that must be killed off. If it isn't properly treated, you end up with a situation similar to that of what we saw in the recent North Korean refugee who suffered from parasites. After that, as you mentioned, there are pharmaceuticals which are notoriously hard to filter out. Next on the list is heavy metals that can become concentrated in excrement. Even after addressing these concerns, if the process to treat the waste is too costly, then there goes the benefit. I would compare some of the challenges this faces to those that are faced when turning salt water into fresh water through desalination (probably not a direct comparison).

simook 9y ago
I encourage you to do a little more research on this. Bad and good bacteria exists in this world regardless of how Human's try to control it. Waste processing plants use a combination of bacteria and UV to treat wastewater. That process is very similar to what nature does with animal and human waste. However, moving human waste is a tough problem and requires substantial resources (fossil fuels, infrastructure, electricity, etc...) and the act of moving it is usually the source of contamination. I think it's completely valid and beneficial to compost human waste, but that needs to be done on a local/individual scale.
crpatino 9y ago
Well, the problem with that is that we ought to be doing the filtering anyways, prior to dumping our excrement to the environment. So, if we are going to get serious about that, creating a viable business model seems like the obvious first step. The alternative is to keep replenishing organic matter in the soil with non-renewables; keep trying and failing, at great financial cost, to clean up our waste before dumping it back to the environment; and end up with damaged farmland and screwed waterways anyways.

kwk1 9y ago

Most of the mass in plants comes from the air, and most of the mass of soil loss is from erosion and runoff, so this wouldn't avert loss, just reconnect mass flows for the process for natural soil generation, while not altering the processes that lead to the unnatural rates of loss in the first place.

mccoyspace 9y ago

There was a story about this in Motherboard just the other day. Tl,dr— Metals and drugs are a big problem *edit: spelling https://motherboard.vice.com/en_us/article/8q8xnk/turns-out-that-using-human-poop-to-fertilize-crops-might-not-be-such-a-great-ide https://motherboard.vice.com/en_us/article/8q8xnk/turns-out-...

abakker 9y ago
It is worth noting that not all crops absorb toxic metals in the soil, and some crops/plants sequester certain metals extremely well - (Kale/Thorium, Garlic/Selenium). Possibly we could use certain crops to ameliorate certain metal toxins.
- haZard_OS 9y ago
  We already do. It's called phytoremediation. Some of us even make a pretty decent living specializing in the field.
fencepost 9y ago
See also http://www.slate.com/articles/news_and_politics/roads/2016/07/taranto_italy_is_decontaminating_its_land_by_cultivating_hemp.html http://www.slate.com/articles/news_and_politics/roads/2016/0...

deleted 9y ago

[deleted]

maxerickson 9y ago

Lots of sewage sludge is spread on farms in the US. https://www.epa.gov/biosolids https://www.epa.gov/biosolids

thinkcontext 9y ago

DC's water treatment plant does this. Solid waste goes into a biodigester which produces methane which is used to create electricity to help run the plant. The other product is "biosolids" which are rated safe for use on food crops. https://www.dcwater.com/biosolids https://www.dcwater.com/biosolids This wouldn't be nearly enough though. The amount of human waste is, however, dwarfed by animal waste.