ManageChatDiscover
101236

Floatation of Activated Sludge by Nascent Prepared Carbon Dioxide.

Article

Last updated: 04 Jan 2025

OverviewSimilar Items

Subjects

-

Tags

Public Works Engineering

Abstract

Sludge treatment plays an important role in the treatment of wastewater. The production of sludge from wastewater treatment by the activated sludge method is relatively high, which causes problems in the treatment and disposal processes. The main purpose of sludge treatment is to reduce its water content, in addition to the prevention of pollution of the environment; one method of the activated sludge treatment methods is "Thickening by Floatation", which could reduce the water content of the sludge, facilitating the disposal process. In the present study, the floatation method is used to increase the sludge solid content by bubbles of carbon dioxide, which is directly prepared from sodium bicarbonate and hydrochloric acid, without the use of pressurized CO2, which results in the floatation of activated sludge solid particles. A floatation cell, composed of a glass column with a square base (13.5 x 13.5 cm) and height (50 cm), is used. The quantity of sodium bicarbonate ranged from 5 to 6.5 g/L; and that of the hydrochloric acid (10% concentration) ranged from 10 to 13 mL/L. The efficiency of this system was discussed with varying parameters, such as chemicals addition and initial solid content of sludge. The floatation cell showed a good result, regarding the increasing of the thickened sludge by floatation, from (0.6-1.1) % of solid content to (3.25-4.75) %; in addition, the current study has also shown better results, compared to the conventional pressurized CO2 cell.

DOI

10.21608/bfemu.2020.101236

Keywords

flotation, Activated sludge, Carbon dioxide

Authors

First Name

Hoda

Last Name

El-Gamal

MiddleName

F.

Affiliation

Public Works - Eng. Depart. - Faculty of Eng. - Mansoura University

Email

-

City

-

Orcid

-

First Name

Kamal

Last Name

Radwan

MiddleName

E.

Affiliation

Public Works - Eng. Depart. - Faculty of Eng. - Mansoura University

Email

radwankhir@mans.edu.eg

City

-

Orcid

-

First Name

Kareem

Last Name

Fouad

MiddleName

M.

Affiliation

Civil Eng. Depart. - Higher Institute of Eng. & Technology - New Damietta

Email

-

City

-

Orcid

-

Volume

40

Article Issue

2

Related Issue

15351

Issue Date

2015-06-01

Receive Date

2015-01-28

Publish Date

2020-07-07

Page Start

21

Page End

29

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 40_Issue 2_Pages 21-29.pdf

PDF . 369.4kB

Link

https://bfemu.journals.ekb.eg/article_101236.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=101236

Order

9

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Floatation of Activated Sludge by Nascent Prepared Carbon Dioxide.

Details

Type

Article

Created At

22 Jan 2023