Continuous Composting Tanks

1. Continuous Composter Tanks
Sarah Allen. Spring 2015. Luke Kwan. INTA332 B

2. What do they do?
• A composting (or
biological) tank system
contains and processes
carbon additives, food
waste, some types of
animal waste, and
natural fibers such as
paper based products.

3. How does it work?
• Unlike a septic system, a composting system relies on
unsaturated conditions where aerobic bacteria break down
waste.
• Waste is contained, and most odor is limited due to enclosed
vessel.
• Some units end contents can be used for gardening along with
mulch. Other container systems use the gas omitted form the
composting process as cooking fuel

4. Composting Cycle
Considering the contents of tanks,
they are primarily installed
outdoors.
Sizes can range from small
households use for gardening, to
larger applications such as farms
Smaller units can be constructed at
home, while large pieces can be
ordered pre fabricated.

5. The “Other” Tank

6. Types of composting toilets
Batch Composting
Continuous Composting
Hybrid Composting

7. Waterless Composting Toilet Tanks
• Solid waste is collected in a small compost chamber
directly beneath the toilet pedestal. A low powered
electric fan circulates air through the chamber speeding
the composting process and eliminates odors. Liquids
are separated from solids and evaporated by the fan.
Any excess liquid is dispersed into a small trench
Nature Loo Composting Toilet

8. Installation
Installation of these composting
tanks take more than the basic
plumbing needs of the typical
toilet. There are drain hoses
(10ft or more), Vent stacks,
diffusers, and roof flashings.
Basically you are installing an
additional “ante chamber”
outside of the bathroom to
collect the waste and keep it
contained in needed
temperature levels, and prevent
odors from escaping

9. Types of Tanks