RBF_Cover (for eps) - National Water Research Institute

More documents

Recommendations

Info

Session 2: Operations Bridging Research and Practical Design Applications David L. Haas, P.E. Jordan, Jones & Goulding, Inc. Norcross, Georgia Michael J. Robison, P.E. Jordan, Jones & Goulding, Inc. Norcross, Georgia David R. Wilkes, P.E. Jordan, Jones & Goulding, Inc. Norcross, Georgia Background The Louisville Water Company operates two water filtration plants: the B.E. Payne Water Treatment Plant (Payne Plant), which has a treatment capacity of 60 MGD (227,000 cubic meters per day [m 3 /d]) and is located in eastern Jefferson County, Kentucky; and the Crescent Hill Water Treatment Plant, which is located closer to downtown Louisville and has a treatment capacity of 180 MGD (682,000 m 3 /d). Both are conventional surface-water treatment plants drawing their supply from the Ohio River. The Payne Plant has two 60-inch (1.5-meter [m]) raw-water intake pipes located on plant property. The intake for the Crescent Hill Water Treatment Plant is located near the intersection of Zorn Avenue and River Road, approximately 7 miles (4.4 kilometers) downstream from the Payne Plant intake. In 1999, the Louisville Water Company started operating a horizontal collector well at its Payne Plant. This horizontal collector well consists of a 16-ft (4.9-m) diameter caisson. The caisson was constructed down to the top of bedrock and is approximately 100-ft (30.5-m) deep. There are seven 12-inch (30.5-centimeter) collector laterals radiating out horizontally from the caisson. A pump station was constructed on top of the caisson above the flood plain to pump water to the Payne Plant for further treatment. The design capacity of this well is 15 MGD (57,000 m 3 /d). Jordan, Jones & Goulding, Inc. was retained by the the Louisville Water Company to implement RBF for the remainder of the Payne Plant. This second phase of RBF will provide an additional 45 MGD (171,000 m 3 /d) of capacity. Ultimately, the Louisville Water Company desires to extend RBF technology to the Crescent Hill Water Treatment Plant. This paper provides a summary of issues that were faced in taking the concept of providing additional RBF capacity for the Payne Plant through design. There were three primary areas that Correspondence should be addressed to: David L. Haas, P.E. Senior Project Manager Jordan, Jones & Goulding, Inc. 6801 Governors Lake Parkway • Norcross, Georgia 30071 USA Phone: (678) 333-0242 • Fax: (678) 333-0828 • Email: DHAAS@JJG.com 7
8 design engineers needed to address: • Type of RBF collection system. • Hydrogeologic yield. • Water quality and treatment. Type of RBF Collection System First, it was necessary to select the most appropriate type of RBF technology to satisfy the technical needs of the project economically, as well as other goals such as community acceptance of the project. The construction of additional horizontal collector wells, similar to the existing well, was considered unacceptable because 15 to 20 of these collector wells would be required to satisfy the total treatment capacity for both plants. The construction of this many wells, each with an aboveground pump station, would be costly, as well as aesthetically unpleasing. Three options were considered that would use tunnels in conjunction with RBF to satisfy the needs of the project: • Option 1 consisted of driving a tunnel through the alluvial deposits that overlay bedrock and installing collector laterals from within the tunnel (soft-ground tunnel option). This design concept is depicted in Figure 1. • Option 2 included installing a series of horizontal collector wells (Figure 2) that would be capped at grade and connected together using a deep tunnel through the bedrock. • Option 3 consisted of installing vertical collectors connected together using a tunnel through the bedrock (Figure 3). With any of these options, the number of above-ground pump stations would be minimized, because water from horizontal or vertical collectors would be conveyed through the tunnel to a single pump station located on plant property. In addition to cost, factors that were considered in selecting the type of RBF collection system included construction and maintenance. Construction Considerations The two main construction issues that were evaluated for Option 1 were the feasibility of constructing the tunnel in the alluvial deposits along the riverbank and the feasibility of installing laterals safely from within the tunnel. With regard to Options 2 and 3, the main construction issue evaluated was rock quality. To evaluate these factors, a detailed subsurface investigation was conducted that included the following elements: • Large-diameter bucket auger borings to bedrock. • Grain-size analysis of composite samples obtained from the bucket auger borings. • Core borings of bedrock materials. • Examination of rock outcrops near the site. Large-diameter bucket auger borings were used to collect representative samples of alluvium. Because alluvium contains significant amounts of coarse gravel, cobbles, and possibly boulders, the
Page 1 and 2: 2RBF The National Water Research In
Page 3 and 4: Published by the NATIONAL WATER RES
Page 6: Foreword In 1999, the National Wate
Page 9 and 10: vi 1:30 pm Session 3B: Hydraulic As
Page 11 and 12: viii 1:15 pm Session 8: Emerging Co
Page 14 and 15: Acronyms ADA ß-alaninediacetic aci
Page 16: Conference Abstracts
Page 19 and 20: 2 conventional treatment train on c
Page 21 and 22: 4 The Louisville Water Company also
Page 23: 6 Treatment Capital Cost Annual O&M
Page 27 and 28: 10 Ohio River Pump Station Collecto
Page 29 and 30: 12 Figure 4. Wet/dry tunnel concept
Page 31 and 32: 14 The turbidity of well water is t
Page 34 and 35: Session 2: Operations Construction
Page 36 and 37: Land Surface lengths of well screen
Page 38: Summary Well systems can be constru
Page 41 and 42: 24 Traditionally, ASR has been used
Page 43 and 44: 26 plans for a pilot-scale bank-fil
Page 46 and 47: Session 2: Operations Evolution fro
Page 48 and 49: Today, Cedar Rapids obtains all of
Page 50: REFERENCES AND ACKNOWLEDGEMENTS The
Page 53 and 54: 36 source of most nitrate detected
Page 55 and 56: 38 Hallberg, G.R., D.G. Riley, J.R.
Page 57 and 58: 40 Two 10-MGD capacity pumps were i
Page 60 and 61: Session 3: Hydraulic Aspects Pluggi
Page 62 and 63: iverbed scouring. This analysis sho
Page 64: REFERENCES Schafer, D.C. (2003).
Page 67 and 68: 50 TS GWA Tegel TS Wannsee TS Tegel
Page 69 and 70: 52 contains the lowest concentratio
Page 71 and 72: 54 δ 18 O [ 0⁄00 versus Standard
Page 73 and 74: 56 Acknowledgements We would like t
Page 75 and 76:
58 Phase 1 Investigations Once the
Page 77 and 78:
60 pumping is discontinued and the
Page 80 and 81:
Session 4: Siting Water-Quality Man
Page 82 and 83:
Torgau Case Study The highly produc
Page 84 and 85:
The mean concentration in the “mi
Page 86 and 87:
Session 5: Dynamics Using Models to
Page 88 and 89:
source of induced infiltration to t
Page 90 and 91:
affect the amount of contaminant en
Page 92 and 93:
intuitive system behavior. In the c
Page 94 and 95:
entering the well can be carried ou
Page 96:
Ray, C., T.W. Soong, Y.Q. Lian, and
Page 99 and 100:
82 Riverbank Filtration Near Torgau
Page 101 and 102:
84 drinking-water quality. Drinking
Page 104 and 105:
Session 5: Dynamics Temporal Change
Page 106 and 107:
• Equalization of fluctuating con
Page 108 and 109:
Session 5: Dynamics An Update of th
Page 110 and 111:
Session 5: Dynamics On Bank Filtrat
Page 112 and 113:
Figure 2. Streamlines for two wells
Page 114 and 115:
well galleries near the Unterhavel
Page 116 and 117:
Dinner Presentation Hydraulic Sensi
Page 118 and 119:
conductivity k (especially of the r
Page 120 and 121:
parameter value: Figure 6. Initial
Page 122 and 123:
Keynote Presentation Riverbank Filt
Page 124 and 125:
esulted in a significant improvemen
Page 126 and 127:
Fritz, B. (2002). Uferfiltration un
Page 128 and 129:
Session 6: Microorganisms Using Mic
Page 130 and 131:
was independent of finished water t
Page 132 and 133:
Session 6: Microorganisms Transport
Page 134 and 135:
Session 6: Microorganisms Laborator
Page 136 and 137:
Cryptosporidium are unreliable, lab
Page 138 and 139:
Pathogen Concentration (pathogens/1
Page 140 and 141:
Session 6: Microorganisms Fate of D
Page 142 and 143:
treatment train optimized for turbi
Page 144 and 145:
Acknowledgements We gratefully ackn
Page 146 and 147:
Session 6: Microorganisms Assessmen
Page 148 and 149:
screens along the entire lateral le
Page 150 and 151:
Table 3. Average Distribution of Ri
Page 152 and 153:
Location Number of Sampling Events
Page 154 and 155:
Session 7: Organics Removal Riverba
Page 156 and 157:
uncontaminated groundwater could le
Page 158 and 159:
Sacher, F., H.-J. Brauch, and W. K
Page 160 and 161:
Session 7: Organics Removal Organic
Page 162 and 163:
TOC (mg/L) 9 8 7 6 5 4 3 2 1 Site 1
Page 164 and 165:
Conclusions RBF is very effective i
Page 166 and 167:
Lunch Presentation Potential Uses o
Page 168 and 169:
Session 8: Emerging Contaminants Re
Page 170 and 171:
H 3C O O N N H3C N CH3 Cl AMDOPH Be
Page 172 and 173:
Page 174 and 175:
Results and Conclusion The Santa An
Page 176 and 177:
Page 178 and 179:
echarge is not well understood. Our
Page 180 and 181:
Page 182 and 183:
The MS conditions were as follows:
Page 184 and 185:
Session 9: Public Policy and Regula
Page 186 and 187:
FEET 1,000 900 800 700 600 VERTICAL
Page 188 and 189:
The surficial aquifers in Midwester
Page 190 and 191:
Page 192 and 193:
Page 194 and 195:
that multiple samples should be eva
Page 196 and 197:
turbidity. Endospores, Giardia, Cry
Page 198 and 199:
Session 9: Public Policy and Regist
Page 200 and 201:
For the first phase of the Dyje Pro
Page 202 and 203:
Concentration mg.l 1 60 50 40 30 20
Page 204 and 205:
Session 11: Case Studies “Lessons
Page 206 and 207:
Concentration (mg/L) 35 30 25 20 15
Page 208 and 209:
REFERENCE Koterba, M.T, F.D. Wilde,
Page 210 and 211:
Page 212 and 213:
REFERENCES Laszlo , F., and Z. Homo
Page 214 and 215:
Page 216 and 217:
Figure 2. A sketch of the study are
Page 218 and 219:
By analyzing the δ 15 N-NO 3 of si
Page 220 and 221:
Page 222 and 223:
Microbial growth was weak in all la
Page 224 and 225:
Page 226 and 227:
Objectives The aim of the study was
Page 228 and 229:
6000 4000 2000 Suspended Solids (mg
Page 230 and 231:
REFERENCES American Public Health A
Page 232 and 233:
show all

RBF_Cover (for eps) - National Water Research Institute

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?