Study on high-grade-spread and high-mass-transfer aeration system in treating tanning waste water

Author

Wang, Heli ; Cheng, Li ; Jiang, Nan

Author_Institution

Sch. of Water Resource & Environ., China Univ. of Geosci.(Beijing), Beijing, China

fYear

2010

fDate

2-4 Nov. 2010

Firstpage

352

Lastpage

355

Abstract

This paper provided an energy saving process of uniform restricted aeration, analyzed the dynamic characteristic and conducted experimental test on tanning waste water. Results show that the microorganism activity have been improved greatly by enhancing the mass transfer. Under the conditions of inlet COD_Cr 427-750mg/L, BOD₅ ranges from 224mg/L to 396mg/L, the outlet water is higher than industry standard after 4 hours running; at the organic loading of 1.24 kg COD / (kg MLSS·d), air to water ratio is in between 8-9:1, the uniform restricted aeration have advantages over CSTR process on efficiency, reaction rate and energy consumption. It is well worth popularizing in industry.

Keywords

energy conservation; mass transfer; microorganisms; wastewater treatment; COD; CSTR process; energy consumption; energy saving process; high grade-spread aeration system; high mass transfer aeration system; microorganism activity; organic loading; tanning waste water treatment; Artificial neural networks; Chemical reactors; Chemicals; aerobic; mass transfer; tanning waste water; uniform restricted aeration;

fLanguage

English

Publisher

ieee

Conference_Titel

Chemical, Biological and Environmental Engineering (ICBEE), 2010 2nd International Conference on

Conference_Location

Cairo

Print_ISBN

978-1-4244-8748-6

Electronic_ISBN

978-1-4244-8749-3

Type

conf

DOI

10.1109/ICBEE.2010.5650019

Filename

5650019