Hydraulic Retention Time Influence on Improving Flocculation in the Activated Sludge Processes Through Polyelectrolytes

被引：7

作者：

Almeida-Naranjo, Cristina E. ^{[1
]}

Espinoza-Montero, Patricio J. ^{[1
]}

Munoz-Rodriguez, Marcelo I. ^{[1
]}

Villamar-Ayala, Cristina A. ^{[1
]}

机构：

[1] Escuela Politec Nacl, Ctr Invest & Control Ambiental, Dept Ingn Civil & Ambiental, 17-01-2759,Ladron de Guevara E11-253, Quito 170413, Pichincha, Ecuador

来源：

WATER AIR AND SOIL POLLUTION | 2017年 / 228卷 / 07期

关键词：

Activated sludge system; Sludge flocculation; Polyelectrolytes; Synthetic domesticwastewater; Industrial wastewater; Sludge characteristics; POLYMERIC SUBSTANCES EPS; WASTE-WATER TREATMENT; FINAL PROPERTIES; PERFORMANCE; SEDIMENTATION; BIOREACTOR; CATIONS;

D O I：

10.1007/s11270-017-3427-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Hydraulic retention time (HRT) influence improving sludge flocculation with adding the polyelectrolytes (non-ionic, anionic, and cationic) was studied on an activated sludge (AS) system fed with synthetic domestic wastewater (SDW), dairy industry wastewater (DIW), and caramel industry wastewater (CIW). The sludge volumetric index, food/microorganism ratio (F/M), and mixed liquor volatile suspended solids at different HRTs (6, 8 and 10 h) were monitored on an experimental model. Results showed that both SDWand IW had the best sludge flocculation conditions at 8 h and 100 mL of non-ionic polyelectrolyte (0.2 mg L-1). In addition, this phenomenon reached the organic matter removal efficiencies of 95.9, 95.7, and 94.2% for SDW, DIW, and CIW, respectively. Therefore, optimum HRT increased the organic matter removal efficiencies by 10%, sludge concentration by 37% (22-55%), and F/M ratio by 70%. Moreover, the polyelectrolytes used in AS improved the sludge flocculation by 2.9 times.

引用

页数：9

共 22 条

[1] Evaluating sedimentation problems in activated sludge treatment plants operating at complete sludge retention time [J].

Amanatidou, Elisavet ;

Samiotis, Georgios ;

Trikoilidou, Eleni ;

Pekridis, George ;

Taousanidis, Nikolaos .

WATER RESEARCH, 2015, 69 :20-29

[2] Coagulation/flocculation process and sludge conditioning in beverage industrial wastewater treatment [J].

Amuda, O. S. ;

Amoo, I. A. .

JOURNAL OF HAZARDOUS MATERIALS, 2007, 141 (03) :778-783

[3]

[Anonymous], 2015, GLOBAL WASTEWATER SL

[4]

Arango L., 2011, THESIS

[5]

Association A. P. H., 2005, STANDARD METHODS EXA, P521

[6] Organic polyelectrolytes in water treatment [J].

Bolto, Brian ;

Gregory, John .

WATER RESEARCH, 2007, 41 (11) :2301-2324

[7] Anaerobic digestion of polyelectrolyte flocculated waste activated sludge [J].

Chu, CP ;

Lee, DJ ;

Chang, BV ;

You, CH ;

Liao, CS ;

Tay, JH .

CHEMOSPHERE, 2003, 53 (07) :757-764

[8] Performance and biological indicators of a laboratory-scale activated sludge reactor with phosphate simultaneous precipitation as affected by ferric chloride addition [J].

De Gregorio, Carolina ;

Caravelli, Alejandro H. ;

Zaritzky, Noemi E. .

CHEMICAL ENGINEERING JOURNAL, 2010, 165 (02) :607-616

[9] Bioflocculation and Activated Sludge Separation: A PLS Case Study [J].

De Staey, G. Van ;

Gins, G. ;

Smets, I. .

IFAC PAPERSONLINE, 2016, 49 (07) :1151-1156

[10]

GRAY NF, 2010, WATER TECHNOLOGY INT, P513, DOI DOI 10.1016/J.WATRES.2012.11.008

← 1 2 3 →