Introduction in the technical design for anaerobic treatment design for anaerobic treatment systems PDF
Preview Introduction in the technical design for anaerobic treatment design for anaerobic treatment systems
USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Introduction in the technical ddeessiiggnn ffoorr aannaaeerroobbiicc ttrreeaattmmeenntt systems & DEWATS Dipl.-Ing. Heinz-Peter Mang USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Sanitary biogas systems • … aarree eeffffiicciieenntt, hhyyggiieenniicc aanndd eeccoollooggiiccaallllyy ssoouunndd wwaasstteewwaatteerr treatment units with the additional benefits of energy production and an effluent of high nutrient content. • … ccaann bbee ccoommbbiinneedd wwiitthh aannyy ttyyppee ooff ((llooww-))fflluusshh ttooiilleett ((iinncclluuddiinngg pour flush) and their effluent can be used directly for fertiliser application and irrigation. • … ccaann bbee ffoolllloowweedd bbyy ccoonnssttrruucctteedd wweettllaannddss oorr ootthheerr aaeerroobbiicc tertiary treatment to allow other forms of reuse of the effluent for car-washing, toilet flushing or outdoor cleaning purposes. • TThhee ttrreeaattmmeenntt ooff oorrggaanniicc ssoolliidd kkiittcchheenn aanndd ggaarrddeenn wwaasstteess ccaann also be integrated into the concept to increase biogas production and reduce household waste. • UUnnlliikkee sseeppttiicc ttaannkk ssyysstteemmss, ssaanniittaarryy bbiiooggaass uunniittss ddoo nnoott rreeqquuiirree frequent sludge removal. USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing PPaarraammeetteerrss wwhhiicchh aarree iinnfflluueenncciinngg tthhee ddiiggeessttiioonn process are • FFeeeeddiinngg ccaarrbboonn • Mix fresh and old material inoculation • WWaatteerr pphhyyssiiccaall • Temperature conditions •• ppHH vvaalluuee mmiilliieeuu • Retention time time to act BIOGAS USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Technological alternatives FFllooaattiinngg ddrruumm technology USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Canvas Covered Digester FFoorr hhuuggee aammoouunnttss ooff wwaassttee,, Canvas sealed by water canal USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Fixed dome digester WWiitthh ttooiilleett aanndd iinnlleett ffoorr aanniimmaall mmaannuurree aanndd wastewater USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Flexi Plant RRuubbbbeerr BBaalllloooonn USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing UUp ffllow AAnaerobbiic SSlluddge BBllankkett ((UUAASSBB)) FFoorr aaggrroo iinndduussttrriiaall waste water External ggas store USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing Substrata for Digestion Dry pit latrine waste - Biolatrine Flush toilet waste - Biodigester Septic Tank Animal waste - Agricultural Biodigester Agro-Industrial wastewater High Rate Digester, sshhoorrtt rreetteennttiioonn ttiimmee ((UUAASSBB)) Solid organic waste - High Rate Digester, lloonngg rreetteennttiioonn ttiimmee USTB Introduction to Ecological Sanitation University of Sci & Tech Beijing System is applicable under the following conditions • Suitable under most conditions – floating of the facility during consttructtiion mustt bbe preventtedd iin areas off hhiighh grounddwatter. NNott suitable in areas of great water scarcity or rocky underground. • Public buildings incl. schools with secured – even if limited – watter supplly, allllowiing reuse. • Newly constructed residential areas with individual toilets attached via a small bore sewer, gravity sewer or vacuum nneettwoorrkk. • Sanitary biogas systems should compete with costs for septic tanks. • Community sanitation centres in permanent settlements, where residents cannot construct private toilets, due to financial, topographic or limited space conditions. • Depending on local conditions different designs may be appropriate and could be adapted with design support from biogas technology experts.
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