Ultraviolet Light in Water and Wastewater Sanitation - Chapter 5 pps

... and lawn areas (in 50 % of the samples) (In this context, the EEC Directive 75/ 440 on quality of surface water sources in- tended to be treated to obtain drinking water, recommends the following ... 1984]. 5. 7 PRELIMINARY CONCLUSIONS ON WASTEWATER DISINFECTION WITH ULTRAVIOLET 1. UV light technologies certainly are a valuable alternative for the disin- fection of conventi...

Ngày tải lên: 11/08/2014, 09:21

... Aftergrowth and Photorepair after Exposure to Ultraviolet Disinfection of Wastewater 5. 4 Applied Ultraviolet Doses in Wastewater Disinfection 5. 5 Choice of Lamp Technology in Wastewater Disinfection 5. 6 ... for Sanitation of Wastewater 5. 1 Regulations and Guidelines for Disinfection of Treated Wastewater 5. 2 General Characteristics of Effluents in Relation...

Ngày tải lên: 11/08/2014, 09:21

... OH+ (O 2 •– O 8 2 − O 4 2 − O 4 −• FIGURE 45 Absorption spectrum of uridine in the UV range. 0 (J/m 2 ) 300 (J/m 2 ) 3000 (J/m 2 ) 0 50 0 202 .5 207 .5 212 .5 217 .5 222 .5 227 .5 232 .5 237 .5 242 .5 λ nm 247 .5 252 .5 257 .5 262 .5 267 .5 272 .5 ... 35 40° 45 45 60° 75 75 90° 60° 30° 15 0° 45 30° 15 C (a) (b) 0 .5 1 1 .5 W/m 2 50 ° 55 ° 60° 65 70° 75 80°...

Ngày tải lên: 11/08/2014, 09:21

... 0.02 2 15 0.06 220 0.12 2 25 0.18 230 0.26 2 35 0.36 240 0.47 2 45 0.61 250 0. 75 255 0.88 260 0.97 2 65 1.00 270 0.93 2 75 0.83 280 0.72 2 85 0 .58 290 0. 45 2 95 0.31 300 0.18 3 05 0.10 310 0. 05 3 15 0 ———— Note: ... micropollutants in drinking water remains of marginal importance in the disinfecting process with UV light. In pho- tochemical oxidations the conclusion...

Ngày tải lên: 11/08/2014, 09:21

... 2 05 0.033 1. 85 0.061 210 0. 055 2. 45 0.13 2 15 0.089 3. 15 0.28 220 0.133 3.4 0. 45 2 25 0.206 3. 35 0.69 230 0.3 3. 15 0. 95 2 35 0.47 2. 75 1.29 240 0.76 2.1 1.6 2 45 0.89 0. 95 0. 85 250 1 3. 45 3. 45 255 ... 0.98 5. 25 5. 15 260 0.944 7.0 6.60 2 65 0.83 3. 45 2.86 270 0.63 2.1 1.32 2 75 0.47 1 .55 0.73 280 0.32 2 .5 0.8 2 85 0.206 0.6 0.124 290 0.139 1 .55 0.22...

Ngày tải lên: 11/08/2014, 09:21

... Band II, Kap. (Aug. 1973). DIN (German Normalization Institute), Standard 50 3 1-1 0, 1996. Dodin, A. et al., Bull. Acad. Nat. Médecine (France), 155 , 44, 1971. Dohan, J.M. and Masschelein, ... Ericksson, U., and Nordwall, I., UV Disinfection and Formation of Chlorinated By-Products in Presence of Chloramines, in Proc. Intil. Conf. on Applications of Ozone and also on UV...

Ngày tải lên: 11/08/2014, 09:21

... of B in water in a semibatch well-agitated reactor becomes: (5. 48) Integration of Equation (5. 48) taking into account Equations (5. 47) and (5. 36) to (5. 38), finally yields (5. 49) where (5. 50) According ... with the use of Equation (5. 48). Then, Equation (5. 55) is obtained: (5. 55) Integration of Equation (5. 55) between the limits: (5. 56) leads to the calculation of k...

Ngày tải lên: 11/08/2014, 17:22

... b 5. 91 × 10 6 92 Ozone wastewater Tomato wastewater, COD = 50 0 mgL –1 , pH = 6 .5 7.8, 17–18ºC, 35 Lh –1 7. 05 b 6.99 × 10 –2 92 Ozone wastewater Tomato wastewater, COD = 50 0 mgL –1 , pH = 6 .5 7.8, ... (Simple ozonation) b-a-b a-b-a b-a-b-a-b a-b-a-b ©2004 CRC Press LLC experimental conditions applied. For this kinetic regime the ozone absorption rate is [see also Equation (5. 5...

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... Ozonation of US drinking water sources: HO concentration and oxidation-competition values, in Ozone in Water and Wastewater, Proceedings of 11th Ozone World Congress, Vol 2, S-1 7-1 19–1 25, San Francisco, ... parameters of the water. In fact, rate constants k A and k B give a measure of the effects of pH and presence of initiating compounds on the one hand and the ef...

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