6533b851fe1ef96bd12a8eda
RESEARCH PRODUCT
Anaerobic on-site treatment of black water and dairy parlour wastewater in UASB-septic tanks at low temperatures.
Jukka RintalaSari Luostarinensubject
Environmental EngineeringTime Factorsmedia_common.quotation_subjectSeptic tankWaste Disposal FluidWater PurificationBacteria AnaerobicNutrientBioreactorsBioreactorWaste Management and DisposalWater Science and TechnologyCivil and Structural Engineeringmedia_commonTotal suspended solidsBlackwaterWaste managementSewageChemistryEcological ModelingChemical oxygen demandTemperatureWaterPulp and paper industryPollutionOxygenDairyingWastewaterFacility Design and ConstructionAnaerobic exercisedescription
Anaerobic on-site treatment of synthetic black water (BW) and dairy parlour wastewater (DPWW) was studied in two-phased upflow anaerobic sludge blanket (UASB)-septic tanks at low temperatures (10-20 degrees C). At all temperatures, total chemical oxygen demand (COD(t)) removal was above 90% with BW and above 80% with DPWW and removal of total suspended solids (TSS) above 90% with both wastewaters. Moreover, dissolved COD (COD(dis)) removal was approx. 70% with both wastewaters indicating good biological activity of the sludges. With BW, a single-phased reactor was found sufficient for good COD removals, while with DPWW, a two-phased process was required. Temperature optimum of reactor sludges was still 35 degrees C after long (398d) operation. Most of the nutrients from BW were removed with TSS, while with DPWW nutrient removal was low. In conclusion, UASB-septic tank was found feasible for (pre)treatment of BW and DPWW at low temperatures.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-04-14 | Water research |