Cover Image
close this book Water purification, distribution and sewage disposal for Peace Corps volunteers
View the document Contents
View the document Preface
close this folder Section 1: Water supply sources
View the document Overview:
View the document Background information
View the document Evaluation of sources
View the document Factors influencing the quality of water
View the document The quantity of water
View the document Types of sources
View the document Development of water sources
View the document The basic requirements of a water supply
View the document Selection of the source of supply
View the document Lesson plans
close this folder Section 2: Water treatment
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View the document Self purification
View the document Basic steps in treating water
View the document Sample designs for treatment systems
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close this folder Section 3: Planning the distribution system
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View the document Design
View the document Existing facilities
View the document Size and nature of the community
View the document System capacity
View the document Water source
View the document Proposed system
View the document Financing the project
View the document Lesson plans
close this folder Section 4: Characteristics of an adequate system
View the document Overview:
View the document Essential components of an adequate system
View the document General requirements for an adequate system
View the document Relationship of distribution system to community
View the document Headloss and distribution systems
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close this folder Section 5: Construction techniques
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View the document Scheme
View the document Concrete
View the document Construction at the source
View the document Construction at the pumping station
View the document Construction at storage facility
View the document Construction on supply line
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close this folder Section 6: Operation and maintenance
View the document Overview:
View the document Water source maintenance and inspection
View the document Regulations for installing new service connections or extensions to existing system.
View the document Regulations for cleaning the distributions system
View the document Inventorying for operation in emergencies
View the document Types of financial statements for small waterworks
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close this folder Section 7: Scope of disposal system projects in host communities
View the document Overview:
View the document Public health importance of excreta disposal
View the document How disease is carried from excreta
View the document The characteristics of an adequate system
View the document Possible sanitary measures in rural areas
View the document Soil and ground-water pollution
View the document Location of latrines and other excreta disposal facilities
View the document Sludge accumulation and the life of a pit privy
View the document Community participation
View the document Family participation
View the document Role of health department and other agencies
View the document Public versus private latrines
View the document Human factors
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close this folder Section 8: The privy method of excreta disposal design for a village
View the document Overview:
View the document The sanitary survey
View the document The pit privy
View the document Example privy designs
View the document Latrine for village use
View the document Thailand water-seal privy
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close this folder Section 9: Water carried sewage systems construction and maintenance
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View the document The septic tank
View the document Operation and maintenance
View the document Lesson plans
View the document Appendix A
View the document Appendix B
View the document Bibliography

Lesson plans

THE PRIVY METHOD OF EXCRETA DISPOSAL

DESIGN FOR A VILLAGE

LESSON NO. 1

LESSON OBJECTIVE: Outline the factors that must be considered in designing a village privy system.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS/RELATED READING

Sanitary Survey

Recall the need for a sanitary survey.

WHO Monograph Series #39

p. 158-155.

 

Outline the essential elements of this survey.

 
 

Demonstrate estimating the volume of pits, holes and tanks.

 

The Pit Privy

Discuss the function of the basic components of a pit privy.

WHO Monograph Series #3

p. 43-76.

 

Illustrate the designs and components for three types of pit privies.

 

Sanitary Survey

Discuss how to determine the adequacy of the present system.

See Section 7

 

Assemble students to conduct a survey of a rural area. This survey must

 
 

1) designate the population and its distribution

 
 

2) determine the practice of hygiene in this erect indicated from the present type(s) of facilities implemented

 
 

3) state where present facilities are improperly located, poorly maintained and not used

 
 

4) estimate the health of the community from records of communicable diseases, intestinal infections (diseases caused by worms) and acute conjunctivitus in infects (inflammation of the mucus membrane around the eyeball) and cite the death and debility statistics

 
 

5) identify what type(s) of privies are presently used (public or private; distribution and use) and determine the location of these facilities with respect to water supply systems.

 
 

6) designate the number of new installations needed and where they should be located

 
 

7) define the average income of the community members

 
 

8) estimate the cooperation available from agencies or groups for training and health education of the public

 
 

9) determine what materials are available locally, their costs, whether potential resources for self-help are available and if the needed craftsmen are available locally and their wages

 
 

10) state what type(s) of privies would be the most economically feasible.

 
 

Assemble students for discussion of survey findings.

 

 

THE PRIVY METHOD OF EXCRETA DISPOSAL

DESIGN FOR A VILLAGE

LESSON NO. 2

LESSON OBJECTIVE: Set up and carry out a program to construct a privy system.

TOPIC

INSTRUCTIONAL PROCEDURE

SUPPLEMENTAL MATERIALS/RELATED READING

Selection of Privy System

Assemble students to visit the present facilities to determine the type(s) of facilities presently implemented.

 
 

Review the criteria to be used in the selection of a village privy system.

 
 

Select the most feasible privy designs.

 
 

Discuss how to prepare a plan toward the finances for the system.

 

Instruction techniques

Outline the logical sequences of construction for the privy type selected.

For construction techniques see Section IIC

 

Have students assemble the tools and materials for the construction of this privy type.

 
 

Set up a program (allocate construction tasks to the students) for the construction of a privy of the type selected.

 
 

Supervise students in the construction of this privy