STUDY ON SCREENING AND OPTIMIZATION OF MUNICIPAL SLUDGE DEEP DEWATERING CONDITIONERS

Μέγεθος: px

Εμφάνιση ξεκινά από τη σελίδα:

Download "STUDY ON SCREENING AND OPTIMIZATION OF MUNICIPAL SLUDGE DEEP DEWATERING CONDITIONERS"

Σωσιγένης Κρίος Αποστολίδης
5 χρόνια πριν
Προβολές:

1 SRF CST - 1 PAM 30 ~ 60 mg /L - 2 PAM 9 mg /L 30 g /L 30 g /L STUDY ON SCREENING AND OPTIMIZATION OF MUNICIPAL SLUDGE DEEP DEWATERING CONDITIONERS Liu Lirong 1 2 Luo Yanqiang 1 2 Peng Lisi 1 2 Gong Lifang 1 2 Ma Yinghui 1 2 Ye Tingjin 3 Chen Fanzhong 1 Li Gang 4 1. Guangzhou institute of geochemistry Chinese Academy of Sciences Guangzhou China 2. University of Chinese Academy of Sciences Beijing China 3. Foshan Water Group Foshan China 4. Guizhou Same Net Environmental Protection Technology Company Limited Guiyang China Abstract Taking the sludge of Foshan Zheng'an sewage treatment plant as research object and using sludge settling performance specific resistance to filtration SRF capillary suction time CST water content of sludge cake and dehydration rate as indexes it was investigated the different influence between adding single flocculant and organicinorganic compound flocculant to discussed the influence of coagulant-aid such as quicklime and fly ash on sludge dehydration. The results shows 1 Under single flocculant condition the cationic polyacrylamide PAM ' dewatering effect is the best the best additive quantity is 30 ~ 60 mg /L. Under organic-inorganic compound flocculant condition sludge dewatering performance shows obvious improvment compared with single flocculant condition. 2 Under flocculant plus coagulant-aid condition sludge dewatering performance shows obvious improvement and less flocculant additive amount compared with organic-inorganic compound flocculant condition. Within the scope of experiment the best sludge conditioner combination is 9 mg /L cationic polyacrylamide PAM 30 g /L quicklime 30 g /L fly ash. Keywords dehydration of urban sludge sludge settling performance specific resistance to filtration SRF capillary suction time CST water content of sludge cake

2 specific resistance to filtration SRF capillary suction time CST C 1 1 ph /% / Pa s / g ml - 1 COD / g L - 1 SS / g L VSS / g L - 1 / g g - 1 DS - 1 / cm g - 1 CST /s MLSS / g L - 1 SVI PAM PAM PAM 2 Polyaluminium Chloride PAC Basic Aluminium Chloride BAC ml 100 ml 30 min SRF = 2PA b μ c ( cm /g ) 2 P A b V 0 - V t / V 0 - V μ SRF SRF ~ cm /g cm /g ml 1 min kpa V 0 5 s min V 1 V V V 0 SV = V 100% V ~ 8 min W 0 W h W 2 = 1 - W 2 - W ( 0 W 1 - W ) 100% 0 3 CST s 1 cm = Q r - Q c 100% Q r 4 CST Q r g Q c g CST 2 CST SRF PAM

2014 32 67 PMA PAM 30 ~ 60 mg /L PMA 30 ~ 60 mg /L PAM 8 PAM PAM 0. 3% 300 r /min 30 ~ 40 s 50 r /min 5 min 1 3 PAM 9 CST SRF 2. 2-1 10 PAM SRF 8. 81 10 11 cm /g CST 9.

3 PMA PAM 30 ~ 60 mg /L PMA 30 ~ 60 mg /L PAM 8 PAM PAM 0. 3% 300 r /min 30 ~ 40 s 50 r /min 5 min 1 3 PAM 9 CST SRF PAM SRF cm /g CST 9. 9 s 3 PAC BAC PAM PAC BAC PAM PAC BAC PAM PMA PAM PAC BAC PAC PAM CST SRF 2 PAM CST SRF 3 PMA 1 PMA 30 mg /L 2 PMA 30 mg /L SRF cm / g CST s 60 mg /L 4 PAM PAC

68 2014 32 5 6 PAM PAC CST SRF PAM PAC 4 PAC 1 g /L PAC 0. 5 g /L 2 g /L PAC 1 g /L PAM 30 g /L PAM 5 PAC PAM CST SRT PAC 0.

4 PAM PAC CST SRF PAM PAC 4 PAC 1 g /L PAC 0. 5 g /L 2 g /L PAC 1 g /L PAM 30 g /L PAM 5 PAC PAM CST SRT PAC 0. 5 g /L PAM 60 g /L 90 g /L PAC 1 g /L PAM 60 g /L 90 g /L CST SRF g /L PAC + 60 mg /L PAM 1 g /L PAC + 90 mg /L PAM 2 g /L PAC + 90 mg /L PAM SRF CST 11 SRF CST 6 PAC 1 g /L PAM 9 g /L 60 g /L PAC 1 g /L PAM 90 g /L % % /ml SRF / cm g - 1 CST /s /% mg /L PAM + 1 g /L PAC mg /L PAM + 1 g /L BAC mg /L PAM + 3 g /L mg /L PAM g /L PAC mg /L PAM + 3 g /L BAC mg /L PAM + 1 g /L mg /L PAM 1 g /L mg /L PAM 0. 5 g /L CST s s PMA PAC

2014 32 69 7 8 9 PAM CTS SRF 9 PAM 7 PAM 8 PAM CTS SRF 9 mg /L PAM 30 g /L 30 g /L 8 SRF 2 PAM 9 mg /L CST PAM 9 mg /L

05% 9 mg /L PAM 30 g /L 30 g /L 7 1 12 3 6 - PAM 9 mg /L 3 PAM 3 6 - /ml SRF / cm g - 1 CST /s /% /% 9 mg /L PAM + 30 g

59 9 mg /L PAM + 30 g /L + 30 g /L 38 6. 39 10 9 11. 6 60. 64 90. 24 0. 5 g /L PAC + 30 g /L + 30 g /L 60 3. 25 10 10 15.

5 PAM CTS SRF 9 PAM 7 PAM 8 PAM CTS SRF 9 mg /L PAM 30 g /L 30 g /L 8 SRF 2 PAM 9 mg /L CST PAM 9 mg /L CST PAM 9 mg /L 30 g /L 30 g /L SRF CST 12 s mg /L PAM + 30 g /L + 30 g /L % % 9 mg /L PAM 30 g /L 30 g /L PAM 9 mg /L 3 PAM /ml SRF / cm g - 1 CST /s /% /% 9 mg /L PAM + 30 g /L + 30 g /L mg /L PAM + 30 g /L + 30 g /L mg /L PAM + 30 g /L + 30 g /L g /L PAC + 30 g /L + 30 g /L g /L BAC + 30 g /L + 30 g /L g /L + 30 g /L + 30 g /L

6 TN > 50% 4 NO N > 2 mg /L 12 Proteobac- 10. teria S rrna gene sequence database with phylotypes that represent un- cultured species J J M J J J oligotrophic ecosystem J. Bioresource Technology D Takaya N Maria AntoninaB C S Yasushi S et al. Aerobie denitrifieation bacteria that produce low levels of nitrous oxide J. Applied and Environment Microbiology J M Kim OS Cho YJ Lee K et al. Introducing EzTaxon-e A prokaryotic. International Journal of Systematic and Evolutionary Microbiology Wilson L Bouwer E. Biodegradation of aromatic compounds under mixed oxygen /denitrifying conditions A review J. Journal of Industrial Microbiology and Biotechnology / Stackebrandt E Ebers J. Taxonomic parameters revisited Tarnished gold standards J. Microbiology Today Peyton B M Mormile M R Petersen J N. Nitrate Reduction with Halomonas campisalis Kinetics of denitrification at ph 9 and 12. 5% NaCl J. water research J D laf8@ sohu. com 6 Zhu L Ding W Feng L J et al. Isolation of aerobic denitrifiers and characterization for their potential application in the bioremediation of PAM 30 ~ 60 mg /L - 2 PAM 9 mg /L + 30 g /L + 30 g /L 1 Zall J Galil N Rehbum M. Skeleton builders for conditioning oily sludge J. Water Pollution Control Federation FeCl 3 CaO D @ qq. com J Ca 2 + PAM J J J J PAM J PAM C D J M

Σχετικά έγγραφα

ΕΦΑΡΜΟΓΗ ΕΥΤΕΡΟΒΑΘΜΙΑ ΕΠΕΞΕΡΓΑΣΜΕΝΩΝ ΥΓΡΩΝ ΑΠΟΒΛΗΤΩΝ ΣΕ ΦΥΣΙΚΑ ΣΥΣΤΗΜΑΤΑ ΚΛΙΝΗΣ ΚΑΛΑΜΙΩΝ

ΤΕΧΝΟΛΟΓΙΚΟ ΕΚΠΑΙ ΕΥΤΙΚΟ Ι ΡΥΜΑ ΚΡΗΤΗΣ ΤΜΗΜΑ ΦΥΣΙΚΩΝ ΠΟΡΩΝ ΚΑΙ ΠΕΡΙΒΑΛΛΟΝΤΟΣ ΕΦΑΡΜΟΓΗ ΕΥΤΕΡΟΒΑΘΜΙΑ ΕΠΕΞΕΡΓΑΣΜΕΝΩΝ ΥΓΡΩΝ ΑΠΟΒΛΗΤΩΝ ΣΕ ΦΥΣΙΚΑ ΣΥΣΤΗΜΑΤΑ ΚΛΙΝΗΣ ΚΑΛΑΜΙΩΝ ΕΠΙΜΕΛΕΙΑ: ΑΡΜΕΝΑΚΑΣ ΜΑΡΙΝΟΣ ΧΑΝΙΑ