AERATION: Principles and Practice ( VOLUME 11 ) - Chapter 2 docx

... Equations (2 .1 8) and (2 .2 4) into (2 .1 7) yields the oxygen flux. (2 .2 5) Multiplying by the interfacial area per unit volume, the change in oxygen concentration with time, similar to Equation (2 .1 0) results. (2 .2 6) Equation ... conditions is defined similar to Equation (2 .4 2) . (2 .5 2) Dividing Equation (2 .5 2) by (2 .4 2) pro...

Ngày tải lên: 11/08/2014, 09:21

... pore 968 (1 98 6) 5.57 7. 12 (1 99 8) 7.43 (1 99 9) 15.7 16.8 (Conklin, 20 01; Leonforte, 199 8) Red Hook Brooklyn, NY 2. 6 (6 0) Diffused 23 2 (1 98 8) 16.8 2. 49 (1 99 8) 2. 29 (1 99 9) 25 24 (Conklin, 20 01; Leonforte, ... 20 01; Leonforte, 199 8) Owls Head Brooklyn, NY 5.3 (1 2 0) Diffused 380 (1 99 5) 27 7.15...

Ngày tải lên: 11/08/2014, 09:21

... 4.4–7 .2 Wilfey, 1998 12. 6 15.5 21 7 5.6–8 .2 Wilfey, 1998 Disc — 25 cm (coarse) 4.7– 12. 6 15.5 21 7 5.1–5.9 Wilfey, 1998 Disc — 23 cm 1.6 20 .2 29 2 3 .2 7.9 Wilfey, 1987 3 .2 20 .2 25 5 4.6–6.9 Wilfey, 1987 4.4 ... disc 18-cm grid 0.6–5.5 3.6–5 .2 2 2- cm grid 0.6–5.0 4.1–6.1 24 -cm grid 1.1–4.7 4.4–5.5 Ceramic dome 18-cm grid 0.8–3.9 3.4–6.0 Perforated membrane disc b 51-cm 24...

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 ... SOTE h h sso S S so () =⋅− () [] ⋅ +⋅ − () [] +⋅− () [] =⋅− () [] ⋅ () () 1 1 0 0013 1...

Ngày tải lên: 11/08/2014, 09:21

... = 420 scfm Stenstrom, 1989 ST Draft tube turbine/75hp 2 units 123 (1 6 5) * 60 (8 0) 106 (1 4 2) 1 82 (2 4 4) 24 (1 1 0) 11 (5 3) 20 (9 4) 35 (1 6 2) 76 (9 . 4) 37 (4 . 6) 65 (8 . 1) 1 12 (1 4. 0) — — 1.05 (1 .7 3) 1.13 ... (1 2 8) 11 (5 9. 0) 45 (5 . 7) 61 22 (8 . 5) 1.88 (3...

Ngày tải lên: 11/08/2014, 09:21

... kgO 2 /kWh 4.59 lbO 2 /hp-h mixer power only Avg AEf 1 .24 kgO 2 /kWh 2. 13 lbO 2 /hp-h mixer and generation power No. Secondary Clarifiers 2 Overflow Rate 24 .44 m 3 /m 2 /d 600 gpd/sf Diameter 22 .9 ... Environmental Engineering, 11 4 (2 ), 415–4 32. Clifft, R. C. (1 99 2) . “Gas Phase Control for Oxygen-Activated Sludge.” J of Environmental Engineering, 11 8(3...

Ngày tải lên: 11/08/2014, 09:21

... non-steady-state analysis techniques, a) changing power levels, b) H 2 O 2 addition. R CC t CC Ka CC Ka Ka Ka RR iR L f iR L f L f L f = −+ − − −             − 21 0 1 1 2 2 12 1 11 11 CC Ka R CC t C Ka R CC t f R L f iR R L f iR ∞ =+ ... G OTE SOTE i i n ii i n = == =            = = ∑ ∑ 1 20 20 1 20 1 αβ α β Off-gas overall tank values © 20 02 by CRC...

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- gra...

Ngày tải lên: 11/08/2014, 09:21

... durations. Female gametophytes Embronic sporophytes Male gametophytes Zoospores Juveniles (recruits) Adults (reproductive) Adults (sterile) Adults (attached) Adults (drifting) Germlings (drifting) Local population Remote populations © 20 07 by R.N. Gibson, R.J.A. Atkinson and J.D.M. ... in (1 ) detachment of adult sporophytes and their removal from the population (Dayton 1985a, Te...

Ngày tải lên: 12/08/2014, 02:23

... Activity (Fixed + Removable) b,d U-nat, U -2 3 5, U -2 3 8, and associated decay products 1000 e 5000 g Transuranics, Ra -2 2 6, Ra -2 2 8, Th -2 3 0, Th -2 2 8, Pa -2 3 1, Ac -2 2 7, I- 125 , I- 129 20 500 Th-nat, Th -2 3 2, ... 9 4-7 5-7 10.0 D 027 1,4-Dichlorobenzene 10 6-4 6-7 7.5 D 028 1 , 2- Dichloroethane 10 7-0 6 -2 0.5 D 029 1,1-Dichloroethylene 7 5-3 5-4 0.7 D03...

Ngày tải lên: 18/06/2014, 19:20