20 - The Composting Toilet

Whoa that plumbing post was a bit dense on second read. Sorry for that. I will resist the urge to slice great chunks of detail from its girth in the hope that someone somewhere will find its intricacies useful at sometime. However, I will endeavour to rein in the ambitiousness of this post, as it could get out of hand considering the topic and my well established infatuation with it.

I have already talked about our purchase of the Nature–Loo composting toilet and my reasons for wanting one. I remember blabbing on about taking responsibility for one’s own poo and what not. All this is still relevant and I stand by it. I took longer than first anticipated to get around to the installation and I am taking much longer than expected to represent that experience here in writing. Nearly four months after the first long drop was heard ending with a thud I am now recounting the events leading up to it. I do apologise for the delay, but I have discovered that penning this blog’s paragraphs is a pass time that, though very enjoyable, cannot be forced. I am enticed to the keyboard by an unpredictable chain of events, moods and inclinations. All of which combine in similar but very different ways to produce the words you are reading now. Sigh. Now to put these to the best use I best be describing the toilet. Chop Chop … or more aptly… Drop Drop, let’s go.

Some posts back I outlined the beginnings of a transformation for the house’s bathroom. Remember. We moved the bathroom to the laundry off the back deck and are in the process of converting the room it left behind into a study or third bedroom. During this move we considered including the toilet in the new bathroom, but thought it best to give it its own space. This decision was mostly preference and practicality but a little bit was uncertainty. I had read about the no smell claims of the composting toilet but wasn’t going to bet the offensive odour free life that I mostly enjoy now on them. So a semi outdoor toilet in its own room seemed like a safe idea at the time. In hindsight this concern need not have been one, more on that in a bit.

The bits and pieces that arrived with the toilet are many. A lot of them are bits of conventional plumbing fittings that have been altered and fashioned into some toilet facilitating form. There are various size PVC pipe fittings with slits and holes and additions. These were not on any promotional material I perused before purchase. I guess if they were my thrifty, industrious, though clumsy mind would have conjured ways to build my own composting crapper for much less than the 2000 plus clams I parted with. Then again, mine would not have met certain standards and wouldn’t pass the final house inspection. Nature-Loo is approved in all, or nearly all, Australian States, I think. Anyway I got the bits, read the instruction booklet and set to work. There was nothing particularly special about the installation, it went smoothly enough. The hard part for me was the vent pipe. The high set nature of the back of the house meant that the 100mm pvc pipe was over 7 metres long. This was a tricky feat for a man who is new to plumbing and grossly deficient in local mates dishing out labour flavoured favours.

The basic set up is a pedestal attached to a chute. This chute is about three metres in our case. The chute leads to a chamber with a false bottom for liquids to drip through and leave via a flexible hose. This liquid can run into a mini gravel trench and then seep into the ground or, for us, be plumbed into the drain pipe leading to the grey water system. The solids are stored in the chamber until about 4-5-6 months when it is full. Then you swap the chamber for an empty one and leave the full one sit and compost for another 4-5-6 months. Then you empty it by burying the contents or spreading them somewhere as per your local council guidelines.

Both the in service and out of service chamber are plumbed in for excess liquids

Alright so the question on everyone’s nose upon hearing an intention on composting poo is usually, “but what about the smell?” Well there isn’t any. In fact it smells better than a normal flush toilet. You can go in straight after someone who is notorious for leaving an enduring toilet presence and smell absolutely nothing. This fact rests high on the solo shoulders of the small fan which sits in the base of the vent pipe. This fan draws air through the chamber and pushes it up the vent pipe beyond the roof line. At first my pipe was not long enough (ahem…) and every now and then we would be greeted by a fruity waft while sitting on the back deck. I added a metre and all is now fine. The manual states that the vent pipe should be 600mm above the highest point of the roof. At first I thought this was overkill. Later I found out that drafts and circular currents are produced when breezes hit obstacles like roofs. therefore, when talking toilet vent pipes, the smell can be pushed downwards. This must have happened to us. Considering the fan is run on electricity and it needs to be on all the time, blackouts could easily bring a whole new dimension to inconvenience. Without the fan smells can leave the pedestal and fill the toilet room and beyond. Keeping the toilet seat lid shut helps, so does having a good compost process and, in our case, having the toilet away from the main house.

The vent pipe

OOH OOH STOP THE GLOWING WORDS ON THEIR WAY TO THE PRESS.

While capturing my love for the composting toilet here with sentences, we have encountered a problem. Vinegar flies have taken over. They have been getting into the chamber and are now in great abundance. This should pose no real threat to the effectiveness of the toilet it’s just they fly out by the dozen when we open the toilet lid. Fortunately for us the toilet is outside the house. The manual offers a few suggestions but does not convey complete confidence in any one of them. I’ll keep trying a few things and keep posting. This slight inconvenience has taken a little sheen of my admiration of the Nature-Loo but, considering its ultra elevated position in my held esteem, it didn't move much.

15 - The Other Progress

Over the last month or so we have been busy with house related things, well as busy as we can be while trying to entertain a 16 month old daughter.

Asbestosy Nail Removal
When the asbestos sheeting ceiling lining was removed by the slap dash asbestos removers they left behind most of the nails that held the stuff up many of which still sporting little chunks of asbestos. Nails were not included in the quote. We missed that upon perusal. So a few weeks ago we suited up in beanies, gloves, spray bottles and asbestos dust masks and removed every single nail. This was a somewhat satisfying 4 hour job, though regrettable considering its very existence was due to our oversight. Oh well. You learn from such things. The nails would have had to come out anyway for the new ceiling lining.

Composting Toilet
Finally after years and years of longing we bought a waterless composting toilet. We decided to go with Nature-Loo because I had heard good things about them. I loved the idea of not using valuable water to flush a toilet, especially when that water is from a tank or dam. I still love the water saving characteristic of composting toilets, however, with the flush toilet in the shed we use dam water from a permanently overflowing spring fed dam. This fact somewhat removed the potency from my toilet water saving needs. Though, of course, it still feels great saving water – no matter what that water’s perceived quality or quantity. In addition to this reasoning there has emerged another. Our current septic system attached to the shed is an older style tank and trench system. It has worked fine for the three years or so we have been here permanently. When discussing waste treatment systems with the relevant consultant designing our new system for the house, we decided to go with a similar system by the house to deal with grey water. Because we were including a composting toilet, we found out that we can minimise our trench space significantly by not using it for black (poo) water. This was good news, especially after discovering that the suggested trench site had a spring under it and would not have worked as a trench site for very long at all. The solution to this was to pump the grey water from tanks attached to the house over to the existing shed trench some 120 meters away. Considering the water is only grey, this existing trench would not even need to be extended. Less money all round. No need for more trenches just a tank or two, 120 metres worth of 1-2 inch polypipe and a sump pump. Oh and a composting toilet.

We were always going to incorporate a composting toilet into whatever waste treatment system we decided upon for the house. In many ways this early decision strongly dictated what we should do for the rest of the waste water system. Deciding to take responsibility for one’s own poo is very liberating. It means that you do not have to pay ongoing costs for some other process to do the job for you. It is crazy when you think about it. Those other processes are things like the Biolytix system which recycles waste water so it can be used again in certain household applications. Sounds like a great idea and of course it is in the dry times many people face now. The problem for me with these is the ongoing regular maintenance costs involved. I won’t wear this. And don’t have to because we will only have grey water to deal with.

For those without town sewage connection and a strong aversion to the idea of a waterless toilet, I guess you need to ask yourself how much this aversion is going to cost me. Maybe try and get over it. Your pocket would surely appreciate it.

Anyway, we bought the Nature Loo ‘Classic 1000’ with two chambers. I will probably install it myself in the coming weeks. Watch this blog for the fun and games that is bound to bring. I will also discuss the grey water system more when it arrives.

Water Tank
As you are well aware by now dear reader, we rely on tank and dam water here on the property. We currently have a 23700 Litre (5000Gal) tank at the moment attached to the shed. It has been great. We decided we would leave this attached and purchase another bigger tank for the house. This is what we did. It is a 34000 Litre (7500Gal) tank and after being delivered and resting on its side for a couple of weeks was moved into place by my neighbour with the diggers.

Tank, baby and I

We placed this monster of a tank on the south east of the house. It is only a metre away and dug into the slope enough so that its inlet is low enough to have down pipes from the gutters run down the house under the floor and across into the tank. Currently we have underground pipes going from the shed and back up into the tank some 15 metres away. I don’t really like this method as the water sits in the pipes underground in between rain and I can never be bothered ‘bleeding’ these pipes as often as I should.

Tank in final resting place

Electricity
This was pretty straight forward and probably does not require a paragraph but seeing as I am in the business of providing paragraphs, here it is. We first thought we would have to run electrical wires overhead from the shed to the house as there is a wet gully between them. Before getting a quote for this, I talked to my neighbour who assured me that it was easier and cheaper to go under the gully. I didn’t think such a thing would be allowed. It is and so that is what we did. The metre box remained on the shed and 130 metres of conduit covered cable was dug some 60 cm underground. Where it crossed the gully floor we had a small spring fed pond dug and crossing made for a nice leisurely path from house to shed. So the electricity is now hooked up. We will wait until the ceiling is in to have lights. This means we can have a crack at putting the missing half of the front deck and its associated roof together.

9 - The Hold Up

Before too long it dawned upon us that April would be arriving soon ready to move a house and we still had not received the go ahead from the council. We had a call from them enquiring about the waste treatment report accompanying our application. In the report we had stated that we would like a waterless composting toilet and a grey water system similar to a normal septic system. This was fine. They just wanted to see the spot where the septic application area (trenches) was going. Since the report was prepared we have had over 820mm of rain falling in just 2 months. All of sudden we discovered a spring right where the application areas was to be. The council man noticed this swallowing his boots as I pointed out the area in question. He said we would need to choose another area. The report would need an amendment done by the mob who prepared it. Fine. I rang the guy and he came back out to choose another spot.

We decided we would pump the grey water over to the existing application area we use now for the shed. We were happy with this because it will be cheaper and not close to the house. He went back to write the report and send it on both to the council and us at the same time. We politely stressed the need for a little haste with all this. We should have dropped the politely because he didn’t apply the haste. He sat on the report for two weeks despite two reminders. This made it impossible for us to receive a formal approval from the council before our deadline. We were starting to worry. The planning consultant we commissioned to smooth this kind of thing over was no help. Not sure what we paid him for now, perhaps the ink in his pen as he filled out our application.

We were concerned for a few reasons. Firstly the movers were booked in for the second week of April. They are very busy people. If we did not take this booking we would have to wait about another month. They required council approval to start work on the house a few days before the move. Secondly we thought the house had to be moved from the block by early April or, as you may remember dear reader, we would be hit with a further $10 000.

Turns out we didn’t need to worry. We had layers of cushioning step up under pressure. Firstly the house now did not have to be off the block until the end of the year. Developers are slow like that. We rang the council and discovered that they had the required amended report and everything was set to go. It would take a few weeks to be formally approved but they pretty much gave us verbal approval. We passed this on to the movers. That was good enough for them. Full steam ahead, no…full noxious carbon monoxide ahead, no…behind. Either way, let’s go.