HOMEBIOGAS TG1B2 User manual

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Bio-Toilet
user manual
version 070721
© 2021 HOMEBIOGAS TG1B2/BT0707

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contents
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6
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16
19
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Introduction
Location Planning
Installing the Toilet
Euent Management
Using the toilet
Maintenance
Troubleshooting
Warranty
DO NOT begin using the HomeBiogas toilet unless you have
completed system activation according the the HomeBiogas
User Manual.
The system cannot properly break down waste before activation
and this will make the system produce unpleasant smells.
CAUTION:

3
introduction
The HomeBiogas toilet is an add-on to the HomeBiogas domestic biogas
system that allows users to turn human waste into clean energy in the
form of cooking gas.
The HomeBiogas digester only provides primary and partial wastewater
treatment for the connected HomeBiogas toilet. While rich in nutrients,
euent from the system requires further treatment according to local
wastewater treatment regulations.
Fully o-grid-ready toilet
can use various water
sources for ushing
hand-pump ushing action uses
only 1.2l of water per ush
waste converted to clean cooking
gas in the HomeBiogas digester
euent from outlet diverted to
existing sewage line/septic tank
or used to fertilize ground via a
draineld/mulch basin

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overview of toilet installation:
1. installing the toilet in a suitable location and connecting it to the system
mounting the toilet
bowl, seat & cover
installing bidet/connecting the
ush-water source to the toilet
connecting the waste-water
outlet into the digester
1
2
3

5
option 3 (If option 1 and 2 not possible):
build a draineld/mulch basin
option 1 (preferred):
connect to existing sewage system
option 2:
connect to existing septic tank
2. planning a suitable euent management system & connecting
the euent output from the homebiogas digester

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location planning
You can install the bio-toilet indoors as a replacement for a regular toilet, or construct
an outhouse for the toilet nearer to your biogas system.
To ensure a smooth installation process and a well-functioning bio-toilet after
installation, it is important to properly plan for the toilet’s location, mounting
surface, and plumbing connections to the system, as well as a suitable euent
management method.
It is important to plan the bio-toilet’s installation within the maximum distance of the
connecting piping (see next page).
indoors
toilet outhouse

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up to 10m
≥1m
≤1.2m
up to 5m
There are 2 main ways to connect the bio-toilet to your HomeBiogas system - the option you
choose will aect where you can locate the bio-toilet (maximum distance from system).
Option 1 (Recommended):
The toilet’s discharge elbow must be at least 1m above the fertilizer outlet opening (where the
wastewater pipe enters the system)
In this type of installation, the toilet can be located up to 10m (33ft) from the HomeBiogas system.
Option 2 (where option 1 is not possible):
The toilet is on the same level as the system (discharge elbow of the toilet MUST NOT be lower than the
base of the system)
A second vented loop must be installed along the wastewater pipe, close to the bio-toilet. The rst
vented loop near the toilet must be LESS THAN 1.2m ABOVE the toilet discharge elbow, and positioned
HIGHER than the fertilizer outlet vented loop.
In this type of installation, the toilet can be located only up to 5m (16ft) from the HomeBiogas system.

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installing the toilet
• Flexible, reinforced sanitation hose (38mm/1.5in) of suitable length to connect toilet to system.
An odor-proof sanitation hose is recommended, especially for indoors toilet connections.
• 8mm diameter bolts for mounting toilet bowl (length depending on ooring/platform)
• PVC pipes and ttings to connect fertilizer outlet to chosen euent system (length depending
on toilet location - p15)
• Optional ball valve for 38mm/1.5in pipe, to install after pipe for easier maintenance
If constructing draineld/mulch basin (optional - refer p16):
Draineld:
• large gravel (1-2”diameter), 180 - 360 liter
• ne gravel (0.25-0.75” diameter), 25 - 75 liter
Mulch Basin
• landscaping mulch, large wood chips, ne wood chips/sawdust
Other tools required:
• Power drill (holes for mounting toilet bowl)
• Screwdriver (at) for hose clamps
• Shovel for draineld construction
Parts supplied in the box
Parts/Materials to prepare (not supplied)
LUBRICANT
toilet seat & seat cover
+ ttings
ush reservoir water
lter
ceramic toilet bowl &
pump assembly
5 hose-clamps
for waste pipe
2m waste pipe +
vented loop attached,
extra vented loop
stabilizing cord
(for homebiogas system
combined outlet)
2m ush water
inlet pipe
lubricant
(for monthly
maintenance)

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Mounting the toilet bowl and attaching the toilet seat
Parts & Tools:
1
The toilet is shorter than a regular home toilet. It must be bolted down securely onto the oor or on a raised platform.
If installing onto a platform, it should be level, rigid and strong enough to support the weight of an adult. Do not
mount the toilet on shipping pallets or other weak surfaces. The platform should measure at least 52x63cm (W x L).
• Toilet bowl & Pump assembly
• Toilet Seat and Cover assembly
• 4x 8mmø steel bolts (with matching nuts if mounting
on platform
• Plastic seat ttings (see picture)
• Power drill (holes for bolts)
• Pen/marker for marking drilling location
1. Place the toilet on the mounting surface and
mark the positions of the 4 bolt holes.
2. Drill out the marked holes and bolt the toilet
down to the surface with the appropriate bolts/
screws/fasteners for your chosen surface.

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3. Prepare plastic seat ttings (2 plastic bolts and
nuts, 2 rectangular washers)
5. Fit both the rectangular washers in place over the
plastic screws.
7. Screw the plastic nut onto the bolts, all the way
until the plastic nut is snug against the porcelain
of the bowl.
4. With the seat and cover facing cover-side up, slide
bolts into position on the seat joints.
6. Hold the seat and cover assembly along with the
bolts, and slide the bolts into the holes on the
back end of the toilet bowl.

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setting up the fresh/greywater reservoir for ushing the toilet
2
Handheld Bidet:
Alternatively, connect the toilet's water inlet to a suitable
water reservoir (e.g. a large covered bucket). You can ll the
reservoir with tap water, or use rainwater/well water/other
water sources. The bucket can be located inside or outside the
washroom - up to 1m lower than the toilet if necessary.
You can install a bidet beside the toilet both for
cleaning up and as a water source.
Using a bidet will simplify the process of ushing the
toilet.
Parts & Tools:
• 19mmø water inlet pipe
• pumpguard inline water lter
• suitable water reservoir (bucket/tank etc) - not
provided with the toilet
• utility knife/cutter
1. Install the bidet close to the toilet.
Note:
With a bidet installed, the ush control level can
be permanently set to the right (wastewater out)
position since is no need to pump in clean water.
This will be covered in more detail in‘using the toilet’
(page 14)

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Water reservoir:
1. Attach water lter to one end of the 19mm hose
included in the kit - this is the water inlet pipe
connected to the ush water reservoir.
3. The lter should be immersed in water when the
bucket is lled.
2. Pass the other end of the pipe through the
bucket’s lid so the lter is in the bucket when the
lid is closed.
4. Connect the other end to the toilet’s water inlet,
making sure the hose is snugly tted onto the
pipe.

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Connecting the wastewater outlet into your HomeBiogas system
3
Option 1 (Recommended):
Toilet discharge elbow should be at least 1m higher than the top of fertilizer
outlet (where wastewater pipe enters system)
up to 10m/33ft
≥1m
≤1.2m
up to 5m/16ft
Option 2:
Toilet level with Homebiogas system (toilet cannot be lower than system base)
The vented loop next to the toilet must be less than 1.2m above the toilet discharge elbow, and positioned higher than the
vented loop at the system.
There are 2 ways to connect the toilet to your Homebiogas system, depending on the location of your toilet and system.
We recommend using option 1 where possible, with the toilet placed higher than the system.
If option 1 is not possible, install the 2nd vented loop (included in the box) at a higher point than the fertilizer outlet.
The toilet-system connecting waste pipe should be as short as possible, maintain a downward slope toward the
system (no upward angles) and free from kinks and free from (u-shaped/up-and-down) bends.
Parts & Tools:
• 2m 38mmø exible pipe (vented loop attached)
• 38mmø exible pipe (length according to toilet location) -
not included in kit - need to purchase
• 38mmø steel hose clamps
• stabilizing cord
• screwdriver (at)
1. Measure and cut the length(s) of pipe needed to
connect your toilet and the system. Refer to the
diagrams for vented loop positions if needed.
Note:
Discharge pipe should be kept to the minimum
necessary length. Avoid any kinks, dips or bends in
the pipe - maintain a suitably large bend radius in
the pipe and keep the pipe at a downward slope
towards the Homebiogas system.
2m pipe to insert into digester
(included with kit)
to connect toilet and system
(purchase required length)

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2. Slide a loose hose clamp over one end of the
discharge pipe, then t the pipe over the open
end of the vented loop. Dip the pipe end in hot
water to soften it if the t is too tight.
4. Use 2 hose clamps to connect the pipe to the
discharge elbow on the toilet. Rotate the clamps
before tightening so that the bands are aligned
dierently on the pipe. This prevents leakage.
6. Snap o the plastic circle on the Fertilizer Outlet
cover of the HomeBiogas system.
3. Securely tighten the clamp around the section
where the pipe overlaps with the vented loop.
Repeat with the other vented loop connections
if necessary.
5. Ensure the stabilizing cord is correctly attached,
and the combined outlet is properly aligned
vertically, as shown in the user manual.
7. Insert the discharge pipe into the system from
the round hole on the cover. Push the pipe into
the digester until the vented loop is ush with the
entry hole.
2m pipe included with kit -
goes into digester
purchased pipe -
connected to bio-toilet

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euent management
With the Bio-toilet connected, the HomeBiogas system’s liquid fertilizer should be safely diverted directly to a treatment
solution WITHOUT potential for user contact. The euent should NOT be fed directly to plants.
A draineld is a bed with layers of dierently-sized gravel, used to remove
contaminants/impurities from the digester’s euent before it enters groundwater.
A mulch basin is a permaculture landscaping method that functions in a similar
way, but allows for the absorption, and release of water and nutrients to supply
nearby plants/crops.
When constructing a draineld, pick a location that is:
• clear of trees within a 3.5m (10ft) radius.
• at least 15m (50ft) from any downhill slope greater than 25% (15 degrees)
• at least 30m (100ft) from any private wells
• 3.5m (10ft) away from any property boundary
Alternatively, you can consider diverting the euent into the existing sewage system or
a septic tank. Do observe local regulation and consult a professional when working with
sanitation plumbing.
Draineld/mulch basin usage must meet local regulations for wastewater treatment and disposal/reuse. The size of the
draineld/mulch basin must be adjusted according to the expected usage volume of the Homebiogas toilet, to avoid
any ponding of the euent.

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25
10
15
50
20
30
75cm
30cm
45cm
15cm
1m
2m
3m
HomeBiogas 2.0 :
4.0 :
7.0 :
50 x 105 x 50cm
100 x 210 x 100cm
150 x 315 x 150cm
HomeBiogas 2.0 :
4.0 :
7.0 :
HomeBiogas 2.0 4.0 7.0
60°
10-15mmø
50mm/2” ø
ø
Drainelds/Mulch basins must be sized appropriately for the expected usage/euent output of the digester:
HomeBiogas 4.0 and 7.0 systems will require larger drainelds/mulch basins.
The following draineld dimensions are sized for these general usage requirements:
HomeBiogas 2.0 - 25 ushes per day / 4.0 - 50 ushes / 7.0 - 75 ushes
Constructing a Draineld or Mulch Basin
Parts & Tools:
Draineld
• 2”ø PVC piping, ttings and connectors
• large gravel (1-2” diameter)
HomeBiogas 2.0 - 180 liter / 4.0 - 240 liter / 7.0 - 360 liter
• ne gravel (0.25-0.75” diameter)
HomeBiogas 2.0 - 25 liter / 4.0 - 50 liter / 7.0 - 75 liter
• shovel
• power drill & 10-15mm bit
1. Measure and prepare piping of the correct length required to connect the system’s fertilizer outlet to the
draineld location.
2. Prepare perforated 2”ø distribution pipe (HomeBiogas 2.0 - 1m / 4.0 - 2m / 7.0 - 3m).
Drill two rows of holes in a 60-degree arc, at roughly 15cm intervals along the 2” pipe.
3. Measure out and dig the draineld pit in the chosen location, according to the required dimensions for your
HomeBiogas system model.
Fill the pit with the rst layer of large gravel. Install the 2” distribution pipe on top of the large gravel layer with
holes facing downwards, and then place more large gravel around the pipe.
Add a layer of ne gravel to the pit. Cover and ll up the rest of the pit with a nal layer of soil/compost.
compost/soil
ne gravel
large gravel

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50 x 200 x 70cm
100 x 400 x 140cm
300 x 600 x 210cm
HomeBiogas 2.0 :
4.0 :
7.0 :
15cm
50mm/2” ø
20-40
20
10
40-60
40
20
60-80cm
20 40 60cm
60cm
30cm
HomeBiogas 2.0 4.0 7.0
1.5m
3.0m
4.5m
HomeBiogas 2.0 :
4.0 :
7.0 :
60°
10-15mmø
Mulch Basin
1. Measure and prepare piping of the correct length required to connect the system’s fertilizer outlet to the
mulch basin location.
2. Prepare perforated 2”ø distribution pipe (HomeBiogas 2.0 - 1.5m / 4.0 - 3m / 7.0 - 4.5m).
Drill two rows of holes in a 60-degree arc, at roughly 15cm intervals along the 2” pipe.
3. Measure out and dig the mulch basin pit in the chosen location, according to the required dimensions for your
HomeBiogas system model.
Fill the pit rst with a layer of soil/compost., followed by a layer of sawdust or wood shreds, then a layer of large
wood chips. Install the 2”distribution pipe on top of the large wood chips with holes facing downwards, and
add more wood chips until the pipe is covered. Fill up the pit with a nal layer of landscaping mulch.
soil
sawdust/wood shreds
large wood chips
mulch

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using the toilet
DO NOT exceed the recommended daily feeding amounts or the system will
be unable to properly digest the waste.
HomeBiogas 2.0 - 6 liters + 25 ushes / 4.0 - 12l + 50 ushes / 7.0 - 18l + 75 ushes
Handheld Bidet:
Water reservoir:
Maximum feeding volume:
When using a bidet with the bio-toilet, keep the ush control lever always turned towards the right, on
the ‘pump out’ setting - there is no need to pump in clean water as the bidet provides the running water.
turn pump handle
anticlockwise to unlock
Turn pump handle anticlockwise to unlock
Push down handle fully
and turn pump handle clockwise to unlock
Turn ush lever to the LEFT
Pump to ll bowl with clean water
Turn ush lever to the RIGHT
Pump to ush out wastewater - repeat 2-3 if needed
rinse bowl with bidet pump to empty
wastewater out of bowl
push down handle fully
and turn clockwise to lock
1
1
2
2
3
3
4
4

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maintenance
Regular cleaning
Regular maintenance
Safety
1. Clean the toilet bowl with all-natural cleaners or vinegar.
Avoid chemical cleaners such as bleach or Clorox as these will kill the bacteria
in the system.
2. Do not use abrasive pads on any part of the toilet.
3. Clean with a dry cloth only
1. Lightly lubricate the piston metal rod of the bio toilet pump with the silicone
grease (included in the box). Repeat this step every 2 weeks. IMPORTANT!!!
2. Empty the toilet. Pour half a cup of vinegar to the toilet. Pump once and wait a
few hours before use. Repeat every month.
3. Check there are no water leakages.
4. Check all bolts, nuts, and clamps are fastened tight
1. Euent from fertilizer outlet should be diverted directly to a treatment solution
WITHOUT potential for user contact.
2. Euent from fertilizer outlet should NOT be fed directly to plants, but rather
incorporated into a treatment solution.
3. Any usage of the euent must meet with local regulations and guidelines
for wastewater reuse.