Water purification
Remove pathogens and contaminants from water: heat, filtration, chemicals and sun, from household to industrial scale.
9 articles · 1 to write
Articles
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Basic water quality testing
Source inspection, senses, turbidity, residual chlorine, pH, salts, nitrate, arsenic and fluoride: decide the treatment and check it works.
- N1 · Pottery and farming
- Draft
- Machine translation
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Boiling water
Boil water to kill pathogens, with time adjusted for altitude, safe cooling and storage, and fuel consumption.
- N1 · Pottery and farming
- Draft
- Machine translation
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Solar disinfection (SODIS)
Disinfect clear water in PET bottles in the sun: turbidity, exposure times by cloud cover, what it doesn't remove, storage and verification.
- N0 · Natural materials
- Draft
- Machine translation
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Coagulation, flocculation and sedimentation with alum
Clarify turbid water with alum or moringa: dose per liter, jar test, mixing, settling, decanting, pH and residual aluminum.
- N1 · Pottery and farming
- Draft
- Machine translation
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Chemical disinfection of water with chlorine and iodine
Bleach, calcium hypochlorite and iodine doses per liter and per tank, contact times, residual chlorine, limits and safe handling.
- N1 · Pottery and farming
- Draft
- Machine translation
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Slow sand filter and charcoal biofilter
Household (biosand) and community slow sand filter, with biological layer, sizing and cleaning; granular charcoal bed.
- N1 · Pottery and farming
- Draft
- Machine translation
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Ceramic and carbon filters
Make, test and use silver-impregnated ceramic pot filters, candle filters and a carbon stage; what they remove and what they do not.
- N1 · Pottery and farming
- Draft
- Machine translation
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Solar water distillation
Glass box solar still for brackish or seawater: construction, yield per m², sizing, salts and variants.
- N2 · Craft metallurgy
- Draft
- Machine translation
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Microbiological water testing
Collect sterile samples, a homemade H2S test and E. coli counts with incubation: classify fecal risk and verify treatment.
- N3 · Early industry
- Draft
- Machine translation
Topics to write (1)
Articles planned for this section that have not been written yet (listed in Spanish, the original language).
- N2 Eliminación de arsénico y flúor del agua