Performance of Constructed Wetlands Treating Swine Waste

Note BOD, biological oxygen demand TSS, total suspended solids TKN, total Kjeldahl nitrogen. Source Hammer, D.A. et al., in Constructed Wetlands for Water Quality Improvement, Moshiri, G. et al., Eds., Lewis Publishers, Chelsea, MI, 1993, 343-348. With permission. to an equalization pond from which it is transferred to the wetland unit. The pond at the Escambia County landfill in Florida is aerated, because septage is also added to the pond (Martin et al., 1993). Characterization of the...

Design and Performance Data from EPA Pond Studies

Organic Loading (kg BOD ha1 d1) Source Data from Middlebrooks et al. (1982) and USEPA (1983). Months Effluent BOD Exceeded 30 mg L The Gloyna method was evaluated using the data referenced in Table 4.2. The equation giving the best fit of the data is shown below as Equation 4.2 despite the considerable scatter to the data, the relationship is statistically significant V 0.035< 2(BOD)(1 .099)LIGHT (35-t 2S0 (4.2) BOD BOD5 in the system influent (mg L). LIGHT Solar radiation (langleys). V Pond...

R

FIGURE 7.6 Schematic diagram of nitrification filter bed. sand filters normally operate with a hydraulic loading of less than 5 gal ft2-d (0.2 m d). Gravel is used in the NFB to increase the hydraulic conductivity of the media and permit much higher hydraulic loading rates on the system. The hydraulic loading (with a 3 1 recycle ratio) is about 100 gal ft2-d (4 m d) on one of the operational NFB systems at Benton, Kentucky. The design procedure for the NFB is based on nitrification experience...

Performance Data

Mean performance data for 13 BIOLAC systems are shown in Table 4.15, and monthly performance data are available in the USEPA (1990) report. All but the Along the Length of the Clarifier Hopper Bottom FIGURE 4.22 Cross-sectional view of integral BIOLAC-R clarifier. (Courtesy of Parkson Corp., Ft. Lauderdale, FL.) Along the Length of the Clarifier Hopper Bottom FIGURE 4.22 Cross-sectional view of integral BIOLAC-R clarifier. (Courtesy of Parkson Corp., Ft. Lauderdale, FL.) Summary of Average...

Agricultural Runoff

Nonpoint runoff from cultivated fields adds pollution to receiving water in the form of sediments and nutrients, particularly phosphorus. The Natural Resources Conservation Service (NRCS) has developed a process for treatment and management of these runoff waters. A schematic diagram of the system is shown in Figure 6.5 components include an underdrained wet meadow, a marsh, and a pond in series. An optional final component is a vegetated polishing area. The combined concept is referred to as a...

G Land Treatment Systems

Haccp Voorbeeld Visverwerkingsbedrijf

Land treatment systems include slow rate (SR), overland flow (OF), and soil aquifer treatment (SAT) or rapid infiltration (RI). In addition, the on-site soil absorption systems discussed in Chapter 10 utilize soil treatment mechanisms. The process of land treatment is the controlled application of wastewater to soil to achieve treatment of constituents in the wastewater. All three processes use the natural physical, chemical, and biological mechanisms within the soil-plant-water matrix. The SR...

Organism Concentration in Wastewater and Downwind Aerosol

Wastewater Concentration (No. 100 mL) x 106 69.9 7.5 0.8 0.22 0.007 1.1 0.39 0.005 Aerosol Concentration at Edge of Sprinkler Impact Circle (No. m3 of air sampled) 2578 5.6 1.1 0.4 11.3 71.7 < 1.0 1.4 Source Sorber, C.A. and Sagik, B.P., in Wastewater Aerosols and Disease, EPA 600 9-80-078, U.S. Environmental Protection Agency, Health Effects Research Laboratory, Cincinnati, OH, 1980, 23-35. Aerosol particles may be up to 20 im in diameter, which is large enough to transport bacteria or...

References

Bankston, J.L., Sola, D.L., Komor, A.T., and Dwyer, D.F. (2002). Degradation of trichlo-roethylene in wetland microcosms containing broad-leaved cattail and Eastern cottonwood, Water Res, 36, 153-1546. Bauman, P. (1965). Technical development in ground water recharge, in Chow, V.T., Ed., Advances in Hydroscience, Vol. 2, Academic Press, New York, 209-279. Bausum, H.T. (1983). Enteric Virus Removal in Wastewater Treatment Lagoon Systems, PB83-234914, National Technical Information Service,...

Surface disposal of biosolids

Standards (40 CFR Part 503) for the use or disposal of sewage sludge were published in the Federal Register on February 19, 1993 (Bastian, 1993 Crites et al., 2000 USEPA, 1994a). The regulation discusses land application, surface disposal, pathogen and vector attraction reduction, and incineration. Land application is defined as beneficial use of the sludge at agronomic rates, while all other placement on the land is considered to be surface disposal. Heavy-metal concentrations are limited by...