AERATION: Principles and Practice ( VOLUME 11 ) - Chapter 3 ppt

... Mid-width TABLE 3. 3 Clean Water Oxygen Transfer Efficiency — Aspirators and Jets Type and Placement Airflow Rate (m 3 N /h/unit) Submergence (m) SOTE (% ) SAE (kg/kWh) Reference Jets Dir 21.1 119 ... calculation TABLE 3. 2 Clean Water Oxygen Transfer Efficiency — Nonporous Diffusers Type and Placement Airflow Rate (m 3 N /h/unit) Submergence (m) SOTE (% ) SAE (kg/kWh) R...

Ngày tải lên: 11/08/2014, 09:21

... h s21 1 () = () + () ⋅∆ SOTE h SOTE h SOTE h h s () = () − () 21 ∆ SOTE h d SOTE h dh SOTE SOTE h zH h Hh SOTE SOTE h h s so S S so () = () [] =⋅− () [] ⋅ +⋅ − () [] +⋅− () [] =⋅− () [] ⋅ () () 1 1 0 ... h Hh SOTE SOTE h h sso S S so () =⋅− () [] ⋅ +⋅ − () [] +⋅− () [] =⋅− () [] ⋅ () () 1 1...

Ngày tải lên: 11/08/2014, 09:21

... River Manhattan, NY 7.5 (1 7 0) Diffused, fine pore 968 (1 98 6) 5.57 7.12 (1 99 8) 7. 43 (1 99 9) 15.7 16.8 (Conklin, 2001; Leonforte, 199 8) Red Hook Brooklyn, NY 2.6 (6 0) Diffused 232 (1 98 8) 16.8 2.49 (1 99 8) 2.29 (1 99 9) 25 24 (Conklin, 2001; Leonforte, ... 2001; Leonforte, 199 8) Owls Head Brooklyn, NY 5 .3 (1 2 0)...

Ngày tải lên: 11/08/2014, 09:21

... 14.62 20 .3 10 11. 29 25.1 20 9.09 29.8 30 7.56 34 .0 40 6.41 37 .6 FIGURE 2.10 Effect of temperature on oxygen saturation. C s * H mg L mg L air water ,* () () () * . * () = − () () ° () H p psia CT ... 30 1000 0 280 28 0 3 . . . %.% SOTE lb h scfm SOTE = × = = 185 1 04 637 0 27 93 27 9 . . %.% wkgh G Gm h wlbh G h G scfm ossN oss () =× = ()...

Ngày tải lên: 11/08/2014, 09:21

... turbine/50hp 1unit 45 (6 0) 22 (3 0) 16 (8 0) 7 (4 0) 69 (8 . 6) 33 (4 . 3) — — 0.95 (1 .5 7) 1. 13 (1 .8 6) Field/ total barrier ditch/d = 4.0 m Boyle et al., 1989 AS Float/20hp 14 (1 9) 47.8 (2 4 2) — 2900 65 (2 6) 0.40 (0 .6 6) ... diffuser 40hp/1unit 45 (6 0) * 23 (1 1 6) 210 (2 6. 1) — — 1.55 (...

Ngày tải lên: 11/08/2014, 09:21

... efficiencies in aeration tanks (Okun and Lynn, 195 6). In 19 53, Budd and Lambeth (1 95 7), under the auspices of Dorr-Oliver, conducted studies on a 55–160 m 3 /d (8 30 gpm) bio-precipitation pilot plant ... equilibrium constant for CO 2 system, 6 .35 at 25°C Qm 3 /h liquid flow rate Rm 3 -atm/gmole-K universal gas constant (8 .205∗10 –5 m 3 -atm/gmole-K) r v mg/...

Ngày tải lên: 11/08/2014, 09:21

... GC G GC C GG G G 030 3 0 3 30 0−= = C pM RT g = OTE CC CC pM pM pM pM pp pp f gG gG =− =− = 11 1 3 030 11 33 10 1 30 3 130 10 3 pp pp 13 31 10 1 += =− . OTE p p p p f =− − () =− − 1 0 7905 0 2095 1 1 3 7 73 1 1 1 1 1 . . . p m m R 1 0 ... dispersion and velocity of flow in the tank. For Ridgewood, NJ, fine pore diffusers in tanks 35 .4 m (1 16 ft) long and 7...

Ngày tải lên: 11/08/2014, 09:21

... between initial investment and long-term operation and maintenance (O and M) expenditures. Many long-term O and M expenditures are determined by the capabilities and con- straints initially designed ... will be most effective. The manual of practice FD- 13 (WPCF, 198 8) and the EPA fine pore aeration design manual (EPA, 198 9) provide an excellent data base and biblio- g...

Ngày tải lên: 11/08/2014, 09:21

... (altering the nuclear structure), and the new nucleus becomes radioactive. The four most common cosmogenic radionuclides are H -3 (tritium), Be-7, C-14, and Na-22. Of these, H -3 , C-14, and Na-22 ... h 0.9 83 1.014 1 .115 1.17 1.74 2.08 7 6.6 3. 4 32 12 8 0 .33 8 0. 911 0.969 1.588 11. 4 27.7 16.6 3. 5 (+ 33 more βs) Radiothorium 1.9 13 year 5 .34 5.42 26.7 72.4 0.84 0....

Ngày tải lên: 18/06/2014, 19:20

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Ngày tải lên: 02/07/2014, 04:20