Aeration, of wastewater

A completely mixed system allows a more uniform aeration of wastewater in the aeration tank. This system can sustain shock and toxic loads. 

Shammas, N.K., Fine pore aeration of water and wastewater, in Advanced Physicochemical Treatment Technologies, Wang, L.K., Hung, Y.T., and Shammas, N.K., Eds., The Humana Press, Totowa, NJ, 2007, pp.391-448. 

Analysis of Wastewater after Neutralization, Aeration, and Clarification... 

Lu X, Yang B, Chen J, Sun R (2009) Treatment of wastewater containing azo dye reactive brilliant red X-3B using sequential ozonation and upflow biological aerated filter process. J Hazard Mat 161 241-245... 

Inlet structures at treatment plants often increase the turbulence of the wastewater. A corresponding release of hydrogen sulfide and other odorous substances into the air from inflow of anaerobic wastewater may be a nuisance that will require treatment of the gas released. On the other hand, aeration of the anaerobic wastewater may quickly oxidize the sulfide and some of the organic odorous substances. However, theN-containing odorous substances are slowly oxidized and may be a problem whenever they occur in the inflow to the treatment plant (Hwang et al., 1995). 

Aeration, effect, degradation In water-soil system, 59t Aerial pesticide applicators, volume and characteristics of wastewater, 154t,196 Aerobic pathway, trlfluralln degradation, 39... 

X 10 kkg/year, respectively]. Wastewater consists of direct contact process water, noncontact blowdown, and noncontact ancillary water. The total flow of contact water is approximately 1.27 x 10 mVday (3.355 x 10 gpd), and the total flow of noncontact water is 340.4 mVday (9 X 10" gpd). Treatment of the wastewater consists of coagulation, sedimentation, and biological treatment with extended aeration. Treated wastewater is discharged to a surface stream. 

Volatilization from surface waters is not expected to be a significant source of isophorone in the atmosphere, since this is anticipated to be a slow process (based on the Henry s Law Constant of 4.55x10 atm m mol"). Wastewater treatment plants may, however, emit some isophorone from influent water to the air, particularly if gas stripping methods are used (Hawthorne and Sievers 1984, Hawthorne et al. 1985). Drinking water plants that practice aeration of influent water may also emit small amounts of isophorone to air. 

The advanced integrated pond (AIP) system, shown in Figure 16.24, is a method of wastewater treatment that makes sense for many communities of 2000 to 10,000 people in both developed and developing nations. Wastewater is channeled into an extensive pond system where plants use nutrients from the sewage as fertilizer. A system of paddlewheels guarantees constant aeration of the effluent,... 

Xi W, Geissen S-U, Vogelpohl A (2000) Solar Detoxification of Wastewater in a Novel Aerated Cascade Photoreactor (AGP), Proceedings of the 2 International Conference on Oxidation Technologies for Water and Wastewater Treatment, Clausthal-Zellerfeld, Germany, 28-31 May 2000, Wat. 

Surfactants collect on the air-water interface. During aeration in the treatment of wastewater, they adhere to the surface of air bubbles forming stable foams. If they are discharged with the effluent, they form similar bubbles in the receiving stream. 

Water Environment Federation (formerly Water Pollution Control Federation) and American Society of Civil Engineers, Aeration A Wastewater Treatment Process, Manual of Practice No. FD-13, Alexandria, Va. and New York (1988). 

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