TREATMENT WETLANDS - CHAPTER 18 pot

... wetland treatment systems. Plant propagules that are frequently used to establish constructed wetlands for wastewater treatment include seeds, bare-root seedlings, rhizomes, greenhouse- grown potted ... economically accom- plished by increasing the size of the wetland. 18. 5 STORMWATER WETLANDS The physical design of event-driven wetlands differs in some respects from continuous...

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... LLC Introduction to Treatment Wetlands 5 1.2 TYPES OF TREATMENT WETLANDS Modern treatment wetlands are man-made systems that have been designed to emphasize specic characteristics of wet- land ecosystems ... 148 5.4 Oxidation-Reduction Potential 149 Redox Potentials in Treatment Wetlands 151 5.5 Wetland Hydrogen Ion Concentrations 151 Surface Flow Wetlands 151 Subsurface F...

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... HSSF wetlands. (Adapted from Wallace and Knight (2006) Small-scale constructed wetland treatment systems: Feasibility, design criteria, and O&M requirements. Final Report, Project 01-CTS-5, ... 2-ha aerated lagoons, and is then stored in a 12-ha pond for summer dis- posal to a 600-ha peatland locally known as the Porter Ranch Peatland. The Porter Ranch Peatland has received better-...

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... illus- trates this effect. Warm-UporCool-Down? The Tres Rios, Arizona, demonstration project operated 12 research wetlands (0.12 ha) and 4 pilot scale wetlands (about 1.0 ha). The research wetlands ... progression of temperatures at the Niagara-on-the-Lake, Ontario, VF wetland. The measurement point was at 60-cm depth in a 90-cm downward ow path. The wetland was ood-dosed six times...

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... AMMONIA IN FWS WETLANDS Reductions of ammonia in treatment wetlands systems can be represented by loading analysis and the P-k-C* model. The median net period-of-record removal rate for 118 FWS systems ... efuent using aquatic plants. SRC Publication No. E-82 0-4 -E- 81: Saskatchewan Research Council. Graph from Kadlec and Knight (1996). Treatment Wetlands. First Edition, CRC...

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... 1.4 7- log. For different virus classications, this is broken down as coliphage (2.52-log), somatic coliphage (1.14-log), F coli- phage (0.41-log), MS-2 (1.78-log), and enterovirus (4.00-log). ... indicate that pulse-loaded unsat- urated ow VF wetlands can reduce viral organisms on the order of 2-1 og. This can be subdivided into somatic coliphage (2.70-log) and F coliphage (1.3...

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... unaffected natu- ral wetlands. Information collected for NADB v.2 indicates TABLE 19.1 Progression of Two Side-by-Side Wetlands at the Olentangy River Wetlands Park over a Start-Up Period of ... species that actually occur in treatment wetlands. Wetland plant diversity is a poorly understood subject both in unaffected natural wetlands and in treatment wet- lands. Wetlands are...

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... TABLE 20.11 Examples of Ammonia-N and Nitrate-N Removal/Buildup in VF Constructed Wetlands Location NH 4 -N In (mg/L) NH 4 -N Out (mg/L) NO 3 -N In (mg/L) NO 3 -N Out (mg/L) Dhulikhel, Nepal a 27 ... Knight, 1996). This book includes a performance-based approach to HSSF wetland sizing using the rst-order P-k-C* model. Conceptually, this is a tank-in-series (TIS) model using a relaxed p...

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... HSSF wetlands. The minimum-cost alterna- tive to Figure 23.11, Chapter 23, for small-scale wetlands is a xed standpipe with removable extensions, as implied in Figure 21 .18. For large-scale ... Berms Edge treatment in SSF wetlands is often the earthen berm; the basic cross section for this construction system is shown in Fi gure 18. 18, Chapter 18. Berm construction appears...

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... pollutant removal for one-dimensional cases (Fogler, 1992). A two- dimensional version requires a two-dimensional velocity eld, which are virtually nonexistent for treatment wetlands. The tracer ... only infrequently applica- ble to treatment wetlands. The dimensionless parameter that characterizes Equa- tion B.43 is the Peclet number (Pe), or, its inverse, the wet- land dispersion...

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