GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
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GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource Protectio GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYonByPeter L.M. Veneman and Bonnie StewartDepartment of Plant and Soil SciencesUniversity of Massachusetts37591SummaryThe objective of this study was to quantify the variability and characteristics of greywater sampled at five different commercial locations in Massachusetts. BODs in greywater sampled GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY just prior to discharge to the subsoil disposal facility averaged 128.9 mg'L with a range of 22.1-358.8 mg’L, TSS ranged from 8-200 mg'L with a meanGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
of 53.0 mgAL, and TKN had a mean of 11.9 mg'L and a range of 3.1-32.7 mg'L. Nitrate values ranged between <0.8-17.5 mg'L with a mean of 1.5 mg'L. OrthGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource Protectio GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYe of 5.3 to 10.8. Total coliform counts generally were high and exceeded our dilution ranges. Fecal conforms ranged from 0 to values of 500 to 10,000 cu'100 mL. E. Coli was not detected in any of the samples.A column study was run concurrently with the characterization study to assess the effect of GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYsoil depth and loading rate on treatment efficiency. Data showed a considerable variation both within and between different sites. Passing raw greywatGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
er through the columns resulted in a reduction of BOD; by a factor of 15 to 25 to 7.1 mg'L in Title 5 sand and 3.8 mg'L in sandy loam-textured Bw horiGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource Protectio GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYg'L for the sandy loam, respectively. TKN and orthophosphate values were generally close to detection limits (2.0 and 0.5 mg/L, respectively) in the column effluent, indicating virtually complete removal by the soil. Nitrate values were much higher in the column effluent than in the raw greywater wi GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYth mean values of 9.9 for the sand and 12.9 mg'L for the sandy loam. This indicates that a significant amount of nitrification occurred. Total conformGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
s were present In significant amounts in the column effluents which was not surprising considering that these microbes occur in large quantities in thGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource Protectio GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYng pathogens.At the end of the column study, the greywater application rates were doubled. BODj levels remained low with a mean of 5.2 mg'L. Mean TSS values averaged 6.0 mg'L. TKN and orthophosphates were always less than their respective detection limits of 2.0 mg'L and 0.5 mg/L. Nitrate concentrat GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYions ranged from 6.2 for the Title 5 sand to 5.7 mg'L for the Montauk soil. The data indicated that the effect of different loading rates was statistiGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
cally not significant, but that soil depth was. This seems to point to the fact that increasing the loading rates does not appear to have an adverse eGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource Protectio GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYreywater Characterization5Sampling Site Selection5Analytical Procedures6Results and Discussion -Greywater Characterization7Materials and Methods -Column Experiments15Column Construction15Analytical Procedures16Results and Discussion -Column Experiments16Effect of Soil on Greywater Treatment Efficien GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYcy16Effect of Increased Loading Rates22Hydraulic Performance of Soil Columns22Visual Examination of Dissected Columns24Conclusions24Acknowledgements27GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCY
References cited27Appendix A: Numerical Data of Stale-wide Sampling Sites28GREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource ProtectioGREYWATER CHARACTERIZATION AND TREATMENT EFFICIENCYFinal ReportforThe Massachusetts Department of Environmental ProtectionBureau of Resource ProtectioGọi ngay
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