Showing posts with label Composters. Show all posts
Showing posts with label Composters. Show all posts

Wednesday, September 24, 2014

Conservation of Mass

One of the most profound things I learned in school was during my 8th grade Physical Science class and it has remained with me over the years. The Law of Conservation of Mass states (very roughly) that in a closed system, the mass of that system will remain constant over time.  The implication of this law is that matter can neither be created nor destroyed. It is simply reordered through a series of chemical reactions.

At a practical level this has huge implications. In the natural world, trees lose their leaves every year and those leaves enrich the soil for other plants. Plants turn energy and nutrients into plants, small animals eat the plants and turn them into energy, waste (which enriches the soil) and animal. Predators eat the small animals and turn them into energy, waste (again, enriching the soil) and predator. When the predators die, bacteria decompose the body and turn it back into free energy and its component parts again making it available for the plants. It's a brutal, yet elegant system. There is no waste. Everything is recycled and becomes nutrients for something else.

Consider this... If I bag all my grass clippings and take them to the dump, I am removing matter from my property and placing it in a landfill where it will eventually decompose, creating waste greenhouse gasses and leftovers. If I rake up and burn my leaves every fall I am using a chemical reaction to oxidize the leaves. The components of those leaves are not gone. The ashes represent what remains of the leaves on my property but the bulk of them were changed into hot gasses that were released into the atmosphere. In both cases, I am removing potentially useful matter from my property and creating waste rather than using it for my benefit. Likewise, when I drive my car to take the grass clippings to the dump, I am using the gasoline to produce energy to move my car by burning it. The gasoline is not gone, though. It is simply changed into heat and energy with the by products released into the atmosphere though the tail pipe in the form of waste gasses and water vapor.

Barry Commoner, a prominent biologist, ecologist author and former presidential candidate who passed away in 2012, wrote the book, The Closing Circle. In this book he draws on the Law of Conservation of Mass when he set forth his four laws of ecology. They are:
1. Everything is connected to everything else. There is one ecosphere for all living organisms and what affects one, affects all. 
2. Everything must go somewhere. There is no "waste" in nature and there is no "away" to which things can be thrown.
3. Nature knows best. Humankind has fashioned technology to improve upon nature, but such change in a natural system is likely to be detrimental to that system"
4. There is no such thing as a free lunch. Exploitation of nature will inevitably involve the conversion of resources from useful to useless forms.
Commoner's four laws are so obvious, yet so easy to overlook that it's scary. We are all interconnected - in so many ways. This is not just a World of nations, We are a planet of people and other species with a shared future. Landfill space is becoming scarce and nobody wants one in their back yard. We have developed farming methods that deplete and poison the soil for the microorganisms that live in it while the run off is polluting our rivers and oceans.

Finally, Law #4 is probably the most profound to me. We continue to use our resources faster than they can be replenished. We burn them, use them, break them down into their component parts, mix them together so their not recyclable and then throw them into the landfill where they sit forever, never to be seen again. One day those resources will be gone.

One of the best things we can do for our planet and everyone/thing on it is work to eliminate waste and/or harness it to our benefit. That's where the three R's come into play.

Reduce - Cut back on the stuff we use. Reduce trash, reduce stuff, reduce size, cut waste, or find more efficient ways of doing things.

Reuse - Find other purposes for things that are no longer needed or wanted OR find someone who wants it when you're done rather than sending it to the landfill

Recycle - Cut the amount of resources that go into a dump never to be seen again. Recycle waste food into useable food for other things and compost. Maximize your recycling program at home and work.

These are some of the things that drive our thinking here at Red Clay Farm. We try to find ways of keeping our organic material here on the farm and using it to our benefit rather than sending it to decompose in the landfill. We also work to reduce our waste as much as possible. Here are some of the ways we do that.

Animal Manure - This is composed of grass from our pastures, hay and feed that we have brought in to our farm. It is gathered routinely and composed with straw, leaves or grass clippings. We use it to spread back on the fields to enrich our soils. This way, we get more benefit from the money we spend on hay and feed. Not only does it go to keep the animals alive, but what is not useful to the animals is useful to the grass, and the microorganisms living in the soil.

Left-over human food - We make every effort to not send food scraps to the dump as well. vegetable matter gets put in the compost pile. Meats, fats and other non-compostable items get fed to our Black Soldier Fly Larvae (more on these in a later post). These guys make short work of any table scraps and, in turn, provide a tasty supplement to our chickens and, eventually, our aquaponics fish (our vegetarian tilapia don't like them). In this way we are turning our food scraps into chickens and eggs.

Paper, cardboard, etc - These items are shredded and used for various things such as worm bedding, chicken coop bedding and composting. We use broken-down cardboard boxes for sheet composting in the garden.

Recyclables - Our county recycles plastics, aluminum and glass so we make sure we support these programs.

Water - We live on a gentle slope that starts at the top of the property and runs towards the back of the property toward a creek. The contour of the property naturally channels rain water down the middle of the property. We are now developing a plan to try to stem the flow of water off of our property and keep as much of it as we can. Additionally, we are installing rain barrels at the gutter down spouts to keep that water as well.

Usable stuff - Items that we no longer want or need are donated to the local Habitat for Humanity Re-Store and to Goodwill.

We still have a long way to go, but we've started. Anything that we can use to enhance or enrich our farm stays on the farm. Anything that can be recycled in some way or another is. In this way we have greatly reduced the amount of trash we send to the land fill.

Hopefully this is not too long and manifesto-sounding. The long and the short of it is we can't just throw things away because there really isn't an "away" these days. All we need are a basic understanding of the natural laws of the world, some integrated solutions based on that understanding, and a willingness to make the changes in our lifestyle to implement those solutions and we can begin to make huge changes in the way we affect the Earth.

Sunday, October 16, 2011

Weekend Project - Build a Composter

Our Landscaping timber composter at work.
Supplies:
27 - 8 ft landscaping timbers
6 - 4ft long x 1/2 inch rebar
1 Roll landscaping fabric and galvanized roofing nails (optional)
Total price in Oct 11 - $97.00

Tools:
Drill
5/8 spade drill bit
Hammer
Tape Measure
Saw (to cut timbers in half)

1. Cut 11 of the landscaping timbers in half, making 22 - 4 ft long pieces.

2. Measure 2" from the end of each of these timbers and mare in the center of the timber's width.

3. Using a 5/8" wood spade drill bit, drill half-way through the timber. Do this for three half-length timbers. These will be the base of the composter. Set them to the side.

4. Mark the remaining timbers for drilling. Short timbers should be marked and drilled 2" inches from the end and centered from side to side. Long timbers should be marked and drilled similarly on the ends, but will also need a hole drilled in the middle for the dividing wall.

5. Lay out your three base timbers and place the rebar in the holes drilled half-way through. (not required, but consider placing on top of bricks or cinder blocks so you can get to the compost from the bottom of the composter. This will allow you room to shovel the compost from the bottom of the bin)

6. Place a long timber across the back, then one across the front. Use a hammer to knock the timbers down the rebar if necessary.

7. Check to make sure the base of the structure is square.

8. Continue to add pieces, log cabin-style, until complete.

9. (Optional) Cut lengths of landscaping cloth so they will reach from the top of the timbers to the bottom. Secure in place with galvanized roofing nails. (this is an after thought to my construction. The landscaping fabric will allow air to pass through, but will keep the compost from coming out from between the timbers.

Since you'll be drilling a lot of holes in the same place on each timber, consider making a jig that guide your drilling placement and keep it uniform. Here are some pictures of the simple jig I built for the project.

This is my end hole jig. I would slip this over the end of the timber and make sure the ends of both the timber and the jig were flush, then I'd drill.
This is the jig for the middle holes. I marked each long time at the 4' midway point, then placed the jig on the side of the timber to locate the hole.

Saturday, October 15, 2011

Building a Composter

Adding Compost to the Compost CorralThere are a few things to take into consideration when deciding what type of composter to build or buy.

- How much effort are you going to put into composting?
- What, and how much do you plan to compost?
- How much money do you want to spend?

There are composters for every style, compost volume and price range.

With two horses and a garden, as well as our kitchen vegetable scraps, we planned for a fairly large volume of compost - the horses being the biggest producers of waste. We really like to two-bay tumbler-style compost bins but the ones that are big enough are out of our price range. Instead, we opted to build our own. For less than the cost of a small tumbler composter, we built a two-bay, 8X4 composter out of landscaping timbers and rebar.

After doing some research, we settled on a composter in the style of the Compost Corral featured at this link (and in the picture above). We made just a few small alterations to the basic construction. First, we made it taller, using 4ft rebar instead of the 2 ft rebar recommended. Second, rather than making a huge, 8x8 compost pile, we cut some of the landscaping timbers in half and made it 4x8. Last, rather than one big 4x8 rectangle, we placed a dividing wall in the middle to make to 4x4 bins. This way, once one side is full, we can let it "cook" while we continue to add to the other pile.

Tune in to the next blog to see to details on how to build it and how it turned out.

The Red Clay Farmers

Friday, October 14, 2011

Which Composter?

Compost BinsWe started composting sometime around 2000. Unfortunately, we usually didn't stay in one place long enough to take advantage of the finished compost. When we first started, our compost pile was just that - a pile of mostly grass clippings behind the back fence. Occasionally we would throw our vegetable kitchen scraps in the pile Later, in 2004, we graduated to a plastic bin-style composter. I was always amazed at how quickly the grass would decompose in a week's time!

Well, our plastic bin-style composter was on it's last legs after two moves and being hit a few times by the riding mower. It was held together with copper wire and duct tape and looked pretty sad out in the back yard. We have been looking for a replacement for a while but didn't want to break the bank.

There are many styles of composters. They come in many shapes and price levels. I had been coveting a Joraform JK400. The JK400 is a top-of the line, tumbler-style composter that sports insulated walls in order to maintain heat. Unfortunately, a top of the line composter comes with a top of the line price and at this point in our lives, it was neither practical, nor affordable, to buy one. I didn't like the plastic, flimsy bin composters we found at the local Lowes, and the tumbler-style composters we found were all too small for our purposes. Since nothing was really meeting our needs, we decided to make our own... I mean, it's only composting. How hard can it be?

We will keep you up to date on our construction.