Technical Guide to EcoSan Promotion

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Although this is the cheapest option, it is doubtful that EU financed toilets should look like this. Hence, it is questionable how durable this superstructure is. But however this option is much more affordable and therefore worth while to consider. 3.4 Operation & Maintenance A UDDT is slightly more difficult to keep clean compared to other toilets because of both the lack of water and the need to separate the solid faeces and liquid urine. For cleaning, a damp cloth may be used to wipe down the seat and the inner bowls. Some toilets are easily removable and can be cleaned more thoroughly. No design will work for everyone and therefore, some users may have difficulty separating both streams perfectly which may result in extra cleaning and maintenance. 3.5 Use of UDDTs for agricultural production at household level. 3.5.1 Using urine as a fertilizer Urine is rich in nitrogen and thus has similar fertilizing effect as that of a nitrogenous fertilizer (Vinnerås et.al, 2003). If collected and stored in a correct manner, it can be used in fertilizing crops and vegetables that have high demand for nitrogen. The amount of urine to be applied should be based on the amount of nitrogen demanded or required by a particular crop. This is often already documented especially in respect to chemical fertilizers. If this is not known, then a rule of thumb can be used. Figure 10: Container for storing urine 48
Technical Guide to EcoSan Promotion Generally, one litre of urine has a concentration of 3 – 7 grams of nitrogen for non-flushed UDDTs. However, if flushed UDDTs are used, then the concentration reduces to a range of 1.5 – 3.5 grams per litre of urine. Alternatively, urine collected from one person every day can be applied on a square metre of land. The maximum dosage is five times this amount before toxic levels take effect. Urine should be applied only once during the cultivation period. In order to reap maximum benefit from urine as a fertilizer, it should be applied just prior to sowing to between two-thirds and three-quarters of the period between sowing and harvest time. Plant roots, especially those of seedlings, are sensitive to the toxic effects of urine and therefore should not be soaked in urine. 3.5.2 Using faeces as a fertilizer Unlike urine with high nutrient content, faeces has considerably lower levels of nutrients, especially nitrogen. Instead, it contains organic matter that improves soil fertility through release of phosphorus and potassium. In addition, faeces enhance the buffering capacity of the soil, especially when mixed with ash. These effects are more pronounced in soils with low pH. 49
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Technical Guide to EcoSan Promotion
Page 4 and 5:
Cataloguing-in-publication data Pub
Page 6 and 7:
Preface The EcoSan Promotion Projec
Page 8 and 9:
Acronyms ABR BC BDBR BOD COD DTS Ec
Page 10 and 11: 3.3.2 Current design and costs of U
Page 12 and 13: List of figures Figure 1 : Average
Page 14 and 15: 1.1 Global historical perspective t
Page 16 and 17: 1.3 The MDG sanitation targets Acco
Page 18 and 19: There are some 50 diseases, includi
Page 20 and 21: 1.6 Kenyan context of eco-sanitatio
Page 22 and 23: The most commonly used technologies
Page 24 and 25: The EU-GTZ-SIDA EcoSan Promotion pr
Page 26 and 27: Vision 2030 focuses on correcting K
Page 28 and 29: 2.1 The Philosophy of Ecological-sa
Page 30 and 31: The benefits of humanure is maximiz
Page 32 and 33: 2.4 Reaping maximum benefits from E
Page 34 and 35: Figure 4 : Ecosan water and nutrien
Page 36 and 37: 24 Figure 5 : Imparting knowledge o
Page 38 and 39: 2.8 Policy And Advocacy Issues On S
Page 40 and 41: Other very involved ministries are
Page 42 and 43: Sanitation coupled with hygienic ha
Page 44 and 45: Of these, 470 million live in Afric
Page 46 and 47: 3.1 Introduction A Urine Diverting
Page 48 and 49: The diverted urine that is loaded w
Page 50 and 51: Flush systems come in different des
Page 52 and 53: alternately with only one vault in
Page 54 and 55: Slab thickness of 80 mm is used to
Page 56 and 57: Steps Steps are direct in front of
Page 58 and 59: Figure 8: Modulated squatting pan i
Page 62 and 63: Faeces should be applied and mixed
Page 64 and 65: 4.1 Introduction An Anaerobic Baffl
Page 66 and 67: Organic.dry.matter.(Kg).(Kg.ODM /m3
Page 68 and 69: Table 4: The charge ratio for vario
Page 70 and 71: Proportion of building materials:
Page 72 and 73: Anaerobic baffled reactor (ABR) con
Page 74 and 75: conditions. To produce acetic acid,
Page 76 and 77: 5.1 The Fossa Alterna 5.1.1 Introdu
Page 78 and 79: • Add more leaves periodically to
Page 80 and 81: Once working at full capacity it is
Page 82 and 83: • No electrical energy required
Page 84 and 85: • Ensure that primary treatment i
Page 86 and 87: • Ensure that primary treatment i
Page 88 and 89: 6.1 Introduction Many public instit
Page 90 and 91: 6.2 Case examples of schools using
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102 Annex 3 Drawings of 6m Anaerobi
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Annex 4 Sources of waste water cons
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Volume of liquid(VL) m 3 /d Is equa
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Length of each chamber m 1 Depth of
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About this book In Kenya, many publ
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