28 votes
Accepted

Why don't toilets use saltwater?

The main answer is logistical. Building a network of pipes to bring water to houses is a major effort, and most places where that's been done found it extremely expensive. Providing a second set of ...
  • 1,297
17 votes

Why don't toilets use saltwater?

Catalina Island does use salt water for toilets. It's a small community, however, and they seem to be shifting towards freshwater due to corrosion issues inherent to salt water utilization. From ...
  • 298
5 votes

Why is there much more liquid draining from compost?

Part of it may be the stage in composting. In moving the pile, you had to aerate it well which would speed things up. Remember that much plant material is cellulose and lignan. Cellulose has the ...
4 votes

What are the consequences of wasting water in a water-rich country?

Regardless of where you live, one or more of the following most likely applies: Damaging ecosystems by removing scarce water. If you live in an arid place, the water you waste would have been used ...
  • 11.4k
3 votes

Tea tree oil and water organisms

I know that tea tree oil is poisonous when ingested, just like you said, but it is also toxic for animals upon contact. It must go into the blood stream by penetrating the skin. Because it exists in ...
3 votes

Additional load of using kitchen sink waste disposal units on municipal wastewater treatment

Life cycle assessment has been done on this! This report is by InSinkErator, so they obviously have some commercial interest. Here's the summary, which (to me) seems sound: http://www.insinkerator.com/...
3 votes

Processing grey water (sink, shower) in off-grid situation

I was faced with a similar question a couple of years ago. The best solution I could come up with was to feed the grey water into an area occupied by plants that consumed 'large' quantities of water ...
  • 2,754
2 votes

Why don't toilets use saltwater?

It might even be more environmentally friendly to dispense with using flush toilets altogether by switching to using negative pressure toilets. Vacuum toilets are used on planes and also help to ...
2 votes

Does adding essential oil to a wash waste detergent?

If you don't add additional detergent to your wash (nor do additional wash loads because you believe your cloths come out without being cleaned as well) to compensate for any effects (real, imagined, ...
2 votes
Accepted

Embodied energy of tap water

Check the TRM for recent, state-specific data Illinois (and probably other states) now requires energy efficiency programs to estimate the energy impact of water supply and discharge -- in Illinois, ...
  • 11.4k
2 votes

What are the consequences of wasting water in a water-rich country?

Your parents taught you not to "waste water" because they paid the water bills. Thus the negative connotations associated with "wasting water" are purely (or at least overwhelmingly) economic. It ...
  • 2,754
1 vote

How does the cost of wastewater treatment scale?

On an industrial scale, wastewater treatment costs vary on region, labor and desired water quality. Capital costs are the costs forthe physical assets of the project. Capital costsare part of the ...
1 vote

Does adding essential oil to a wash waste detergent?

Adding the essential oils during the rinsing stage of the wash cycle (when the detergents have already done their job) makes much more sense as even though the essential oils might not use up much ...
1 vote

Is it feasible to use constructed wetlands for greywater treatment in places where lakes freeze for more than half of the year?

Another strategy with human & animal waste involved is growing algae from the effluent to purify the water, recycling it then cheap and easy, uniits are insulated, LEDs via fiber optics climate ...
1 vote

Processing grey water (sink, shower) in off-grid situation

One possible solution would be to construct mulch pits around trees, etc. and then discharge the greywater directly into the bottom of the mulch pits. The mulch pits will help decompose any grease/...
  • 31
1 vote

Why don't toilets use saltwater?

Navy/Marine ships usually have two systems to handle water, in separate tanks: CHT: Collection, Holding and Transfer tanks (more detail on the standards by the SBIR here) MSD: Marine Sanitation ...
  • 573
1 vote

Tea tree oil and water organisms

I had a painful full-body hives reaction to Tea Tree Oil when applied topically. I suppose this was an allergic reaction or some kind of hyper-sensativity. Also, there has been some research ...

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