latrine emptying in emergency situations
Background
Gap Analysis in Emergency Water, Sanitation
and Hygiene Promotion (HIF 2013)
1. Latrines in locations where no ...
The development of latrine emptying kit
(equipment) to be used by humanitarian
organisations in emergency settings or how ...
MALAWI TRIALS FOR PIT
EMPTYING/DISLUDGING
•800 liter
sludge tank
•200 liter
clean water
tank
•Gasoline
engine 6,6
kW / 9hp...
Findings
• Rubbish blocks the suction and also discharge
of the Pumps.
• Every single pit latrine required fishing out
rub...
Findings
• Emptying thick sludge without fluidising is not
possible.
• Traditional fluidising is pouring a lot of water
in...
Fluidising
Findings
• ROM works well with difficult sludge.
(fluidiser included!)
 Small modification will be needed eg opening
to c...
Way forward
• Recommendations to suppliers; ROM,
Vacutug, Sioen
• Build up experience and standardise fluidiser
with recom...
Pit emptying devices for emergency situations
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Pit emptying devices for emergency situations

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Jan Heeger from Red Cross Netherlands gave a presentation on pit emptying devices in emergency situations during the Faecal Sludge Management Lunch Meeting in The Hague, The Netherlands, on 17 April 2014.

This meeting was organised by IRC with support from DGIS.

Published in: Technology
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Pit emptying devices for emergency situations

  1. 1. latrine emptying in emergency situations
  2. 2. Background Gap Analysis in Emergency Water, Sanitation and Hygiene Promotion (HIF 2013) 1. Latrines in locations where no pits are possible (urban, high watertable/flooding) 2. Latrine emptying and desludging 3. Final sewage disposal options after desludging and treatment 4. Urban alternatives for excreta disposal
  3. 3. The development of latrine emptying kit (equipment) to be used by humanitarian organisations in emergency settings or how to empty latrines if desludge trucks are not available Objective of the project:
  4. 4. MALAWI TRIALS FOR PIT EMPTYING/DISLUDGING •800 liter sludge tank •200 liter clean water tank •Gasoline engine 6,6 kW / 9hp Honda •Vacuum pump 2.500l/min High pressure Installation, set on 60 bar •30 meter 3”hose for increased access ROM2 •500 liter sludge tank •No clean water tank •6 kW diesel engine, 3-6 km/hr •Vacuum pump 2.200l/min. •30 meter 3”hose for increased access Vacutug •Atalanta Pelican 351 Diaphragm sludge pump with •Lombardini 15LD225 diesel engine •Solids handling up to 40 mm •Dry run without damage •Self priming to 7.5m •Mounted on two-wheel trolley Diaphragm •13 m3 volume •PVC from SIOEN •2 entries DN80 •2 outlets DN80 •Air valve type Schnorkel •Active carbon filter Bladder •Flow rate (l/h) 200/850 •Operating pressure (bar ) 10- 210 •Weight (kg) 60 •Mounted on troley •Several special nozzels Fluidiser
  5. 5. Findings • Rubbish blocks the suction and also discharge of the Pumps. • Every single pit latrine required fishing out rubbish • On average pits have between 50 – 150 lts rubbish • Septic tanks rarely require fishing • All machines can be operated without significant spillage
  6. 6. Findings • Emptying thick sludge without fluidising is not possible. • Traditional fluidising is pouring a lot of water in the pit and manual stirring • With high pressure fluidiser less water needed (add 15% of sludge) • Unlined pits can be emptied.
  7. 7. Fluidising
  8. 8. Findings • ROM works well with difficult sludge. (fluidiser included!)  Small modification will be needed eg opening to clean sludge reservoir • Diaphragm sludge pump works well for septic tanks without rubbish. Is able to pump large volumes in short time frame.  Less able to pump thick sludge or sludge that contains rubbish • Vacutug similar to the ROM but no fluidiser included, might be able to operate well in high density areas  We experienced many several small breakdowns
  9. 9. Way forward • Recommendations to suppliers; ROM, Vacutug, Sioen • Build up experience and standardise fluidiser with recomendations on nozzles • More field tests in different settings (different sludge) • Share experiences with the sector

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