Human + Manure = HUMANURE!

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Bio-Blog - Unit 14 Entry

In other parts of the world, biosolids (human waste) from sewage treatment plants are treated and used as sustainable agriculture fertilizer. Research the pros and cons of this method and take a stand as to whether this can be a realistic alternative to our current agricultural practices. Who are the potential stakeholders in this issue? Are we influenced by the western view of human waste as an unsanitary and disgusting nuisance?

I have to admit that when I first read the question, I cringed. Soon after, I laughed and got serious knowing that it’s actually a really good idea. If you think otherwise, here are some pros and cons on using biosolids as agriculture fertilizers:

Pros: All natural, low cost, nutrient and mineral rich, always accessible, a source of irrigation, increases plant growth, fewer chemicals than store-bought fertilizers, re-use/ recycle.

Cons: Risk from pollution, looked down upon as dirty, contain pathogens and bacteria.

As you can tell from my extensive list of pros and not so many cons, I’m all for it. It’s all natural, low cost and it’s always around (if participants maintain a high fibre diet).


Too many chemicals are used in our everyday lives and especially in our food. Even before we drench out vegetables in dressing there were very many chemicals that it had s

oaked up before hand. Herbicides, pesticides and fertilizers are hazardous chemicals if ingested and yet, farmers spray them on the crops that we harvest food from. Human waste, has much fewer chemicals than any fertilizer found at the store or mixed my humans; it’s all natural, as natural as it gets.

As crops are grown and harvested every season they continue to strip vitamins and minerals from the soil that they are grown in. Rotating is one way to replenish the soil with these essential vitamins and minerals. It’s easier for the plant to create their own vitamins but as for minerals, well, that’s where fertilizers come in. It’s much better for the crop and the environment to attain there minerals the natural way, from mineral rich human waste! Why MAKE a solution to give back to mother nature when we can BE one? This is the life cycle! Give back to what allows us to thrive the greenest way possible.

We can learn a lesson from Russell, our favourite Wilderness Explorer from t

he movie, UP.

I know, I know; it’s weird. It’s embarrassing, it’s GROSS. Well, where do you think our ancestors went to the bathroom? Toilets weren’t invented until 1596. Before that, buckets of human waste were just thrown onto the streets. Which leads me to an extreme con:

THE BUBONIC PLAGUE?!

This is a quick rundown of the Bubonic Plague, basically, 14th century Europeans weren’t too keen on disposing their waste so they just threw buckets of them out the street during the time of expansion where buildings got higher and higher. Those who weren’t as rich stayed on the ground and even underground to where the waste would drain into. As their living conditions worsened so did their health. This lead to the Bubonic Plague which killed more than 25 million people, a third of the European population at the time.

This is not to say that using human waste as fertilizer will cause that, I’m just giving an example of the worst case scenario; which would be, a plague. We’ve obviously learned a lot since that time and our sanitation has changed dramatically. So much so, that we’ve seemed to have lost touch with nature. Our bodies were naturally made to give back to the environment and I think we should allow it.

We spread around cow, pig, horse, etc. manure everywhere, so why not our own? What’s the difference?

Obviously, we must first treat the humanure the right way. If mixed into a water supply, improperly composted or used raw, it can cause some serious damage (read: Bubonic plague). But if treated properly, it is just as effective as any other manure farmers use.

How it works:

Humans go to the bathroom the same way and flush the same way but instead of the waste going into the sewers, they go into an underground hole along with leaves, grass and kitchen waste. The temperature must be kept at at least 55 degrees Celsius.

After a few weeks you then have a lovely manure that can be used to fertilize your garden.

Uh oh?

This sort of idea doesn’t always go well with everyone. There are always those who disagree or complain about change. Those who are most influenced by deciding to use humanure would be farmers and fresh produce distributors. It’s one thing to say ORGANIC but it’s another to say HUMANURE GROWN: AS ORGANIC AS IT GETS. Some people won’t take it lightly that human “waste” is being used in their MEALS and FOOD. We were taught as children that our waste is dirty and to be properly disposed of, that mentality is not going to change over night. Making a big decision like using humanure on all crops at a farm will affect their sales and even credibility with some consumers.

I think that using humanure is a great green idea that should really be done. It would help a lot in the sanitation and waste disposal sector of cities and would improve farms everywhere. Although I’m all for humanure I have to admit that I’d rather not think about it when I buy or eat my food. I’m a need-to-know basis kind of person but I also love the environment. So, I wouldn’t mind as long as there’s no cute picture of poop with a smiley face on the package.

That's all for...EVER! Goodbye Grade 11 bioblogs!

Keeep it green, keep it happpy! :D

- Angel



Sites used:

http://www.worldwatch.org/node/5394

http://www.newsdaily.com/index.php?feed=Science&article=UPI-1-20071008-14213800-bc-finland-urine.xml

Toilet: http://www.syncrat.com/articles/toilet

Plague: http://en.wikipedia.org/wiki/Bubonic_plague