Laserfiche WebLink
<br /> <br />002573 <br /> <br />nonioni~ed ammonia nitrogen as a percentage of the ammonia-nitrogen <br />concentration based on the water temperature and pH. A short summary of some <br />of the nonionized ammonia-nitrogen concentrations from Willingham (1976) for a <br />range of pH from 6 to 9, and a range of water temperature from, 00 to 1SoC is, <br />presented in table 4. It is noted that the percentage of nonioni~ed ammonia <br />nitrogen increases significantly with increases in pH with an approximate <br />threefold change for each one-half unit change in pH for a constant water <br />temperature. Studies by Skarheim (1973) also have shown the nonionized <br />ammonia nitrogen as a function of total dissolved solids. Because water in <br />the study reach does not contain more than 200 to 300 mg/L total dissolved <br />solids (Wentz and Steele, 1976), the effect of total dissolved solids was not <br />considered in the simulation phase of the analysis. <br /> <br /> Table 4.--Peraentage of nonionized ammonia nitrogen in <br />ammonia-water solutions at various pH and water-temperature values <br /> [After Willingham, 1976] <br />pH Water temperature, in degrees Celsius <br />(uni ts) 0 3 6 9 12 15 <br />9.0 7.64 9.60 11.9 14.7 17.9 21.5 <br />8.5 2.55 3.25 4.11 5.16 6.44 7.97 <br />8.0 .820 1.05 1. 33 1.69 2.13 2.67 <br />7.5 .261 .335 .427 .542 .68 .859 <br />7.0 .083 .106 .135 .172 .217 .273 <br />6.5 .026 .034 .043 .054 .069 .086 <br />6.0 .008 .011 .014 .017 .022 .027 <br /> <br />Effluent Standards of Proposed Regional Wastewater-Treatment Plant <br /> <br />A regional wastewater-treatment plant is proposed in the Steamboat <br />Springs area and is discussed in a wastewater-facilities plan (U.S. <br />Environmental Protection Agency, 1977). The proposed regional plant would <br />replace existing wastewater-treatment plants at Mount Werner, Steamboat <br />Springs, the KOA campground, Sleepy Bear Trailer Park, and the Steamboat~II <br />development (table 1). <br /> <br />As part of the wastewater-facilities plan for Steamboat <br />alternative treatment-plant proposals are discussed (U.S. <br />Protection Agency, 1977). The alternatives are as follows: <br /> <br />Springs, fO,ur <br />Environmental <br /> <br />1. Site in Steamboat Springs using extended aeration in lagoons and <br />advanced biological treatment. <br /> <br />38 <br />