©2009 Rainforest Alliance
Session 9:
Session 9:
Keeping your water
Keeping your water
clean
clean
Session 9:
Session 9:
Keeping your water
Keeping your water
clean
clean
Language: EnglishLanguage: EnglishLanguage: EnglishLanguage: English
Version: 2011
Version: 2011Version: 2011Version: 2011
Corresponding principle:
Principle 4.
Water conservation
Corresponding principle:
Principle 4.
• Washing protective clothing and application
equipment
• Washing clothes
• Washing cooking utensils
• Toilet and shower
• Coffee processing
• Washing fruits at packhouse • Cleaning tea factory
• People in the community drinking the water
• Fish in the river and streams
• Animals and birds drinking the water
What if the water is contaminated?
• People getting sick from drinking water
• Fish, animals and birds dying
Treatment system needs to:
4.Discharge treated water away from water sources
Treatment system needs to:
1.Be big enough to contain the volume of waste water
Treatment system needs to:
3.Filtrate the waste water to purify it
Filtration Trap solids
Dischar ge Volume
Treatment system needs to:
Treatment of waste water
1. Adequate volume
What happens if the water is more than the system’s capacity…
Corresponding criterion:
4.8
Corresponding criterion:
1. Adequate volume
Example of waste water treatment at coffee mills
Small volume
Big volume Medium
Treatment of waste water
2. Trap solids
Corresponding criterion:
4.7 (critical)
Corresponding criterion:
Treatment of waste water
3. Filtration
Water discharged without any filtration
Corresponding criterion:
4.4
Corresponding criterion:
3. Filtration
Mineral filter
For water that contains
agrochemicals, filtration with
activated carbon is recommended. Activated
Treatment of waste water
3. Filtration
Biological filter
Corresponding criterion:
4.4
Corresponding criterion:
4. Discharge away from water
sources Discharging into river, stream,
Treatment of waste water
4. Discharge away from water
sourcesDischarging into a fallow land (without crop), decantation
(artificial) pond etc.
Corresponding criterion:
4.5
Corresponding criterion:
5. Water analysis
Water quality parameter Acceptable value
Biochemical Oxygen
Demand Less than 50mg/L
Total suspended solids Less than 50mg/L
pH 6.0 - 9.0.
Grease and oils Less than 30mg/L
Treatment of waste water
5. Water analysis
Water quality parameter
Quantity of waste water
Less than
50m³/day 100m³ /day50m³ - 100m³/dayMore than
• Biochemical Oxygen Demand
• Fecal coliforms
Once a
year Once in half a year
Once in three months
• Total suspended solids
• pH
• Grease and oils
Every
month Every week Everyday
Corresponding criterion:
4.6
Corresponding criterion:
4.6
©2009 Rainforest Alliance
Optional videos
You can find the following optional videos as “Attachments” to this course.
• Examples of water treatment at coffee mills
19
Summary
Prepare a system with enough
capacity
Prepare a system with enough
capacity
Discharge treated water
away from water sources
Discharge treated water
away from water sources
Filtrate the waste water
Filtrate the waste water
Trap all the solid waste
Trap all the solid waste
Conduct analysis of treated water Conduct analysis
