Efficiency of Suspended Activated Sludge System in Biological Removal of Phthalic Acid

M Pirsaheb; AR Mesdaghiniya

Journal of Kermanshah University of Medical Sciences

Peer-reviewed Medical Quarterly

Current Issue All Issues In Press Accepted Manuscripts Search

Journal Information Boards and Committees Indexing and Listing Sources Journal Metrics Open Peer Review (OPR)Publication Ethics and Malpractice Statement Reviewer and AE Registration Form Support Contact Us

Authors Guide Submit Manuscript

Efficiency of Suspended Activated Sludge System in Biological Removal of Phthalic Acid

Author(s):

M Pirsaheb^1,*,

AR Mesdaghiniya¹

1Iran

Journal of Kermanshah University of Medical Sciences:Vol. 6, issue 4; e81159

Published online:Mar 19, 2003

Article type:Research Article

Received:Oct 22, 2002

Accepted:Feb 20, 2003

How to Cite:Pirsaheb M, Mesdaghiniya A. Efficiency of Suspended Activated Sludge System in Biological Removal of Phthalic Acid. J Kermanshah Univ Med Sci. 2003;6(4):e81159. doi:

Abstract

Background & Objective: Phthalic acid is one of the toxic organic contaminats which can enter the environment through various industries. Biological removal of this pollutant before disposing the wastewater plays an important role for environmental protection and human health. This study is aimed to achieve the efficiency of suspended activated sludge system in biological removal of domestic and industrial wastewater contaminants. The variables of concentration and hydraulic retention time were studied to gain the best allowed volumetric loading time and hydraulic retention time.

Materials & Methods: In this descriptive-analytic research 144 effluents and 23 sludge samples were studied. In this system for biological elimination of phthalic acid, four different hydraulic retention times of 6, 12, 24 and 48 hrs were used. The volumes of aeration and setteling were 6 and 3 liters respectively and total COD feed has been adjusted to 1000 mg/l along with Glucose. The concentrations of inlet phthalic acid were 10, 20, 50 and 500 mgl. COD , BOD₅ and phthalic acid concentrations (using HPLC- UV with wave length of 210 nm) have been measured in effluent. For analysing the data, variant analysis, Cheffe test and Pearson’s coefficient of correalation were used.

Results: In all four retention times phthalic acid was removed. The average phthalic acid removal in hydraulic retention times of 6, 12, 24 and 48 hrs with 10-500 mg/l inlet concentration were 87.5±10.5, 97.5±2.6, 99.6±0.3 and 99.8±0.03 percent respectively. The average COD removal were 88.6±11.6 , 95.5±3, 97.4±0.88 and 98±0.5 percent respectively. The rate of phthalic acid in sludge and the inlet phthalic acid viscosity were 100-320 mg/kg.

Discussion: This system has the ability to tolerate the phthalic acid in hydraulic retention times with different inlet concentration. The average removal of phthalic acid and COD in 24 and 48 hrs retention times are more stable. There was a meaningful relationship between removal rate of phthalic acid and COD with retention times. There was a complete reversed and meaningful relationship between the increase of inlet phthalic acid concentration and the removal rate of these parameters. If the concentration of inlet phthalic acid is less than 50mg/l., the 12hrs retention time is recommended but for over 50 mg/l, 24 hrs retention time is suggested. Allowed volumetric loading rates for 6, 12 and 24 hrs were 80, 100 and 500 g/m³d. The sludge of this system has high adsorption ability of phthalic acid.

Keywords

Fulltext

The full text of this article is available on PDF

Effects of biofilm in improvement of activated sludge efficiency for treatment of industrial effluents containing formaldehyde

Nematallah JafarZadeh,

Sahand Jarfi,

kamyar yaghmaeian,

AmirReza Talaei,

Yalda HashemPor

29

Mar

2015

Effect of biodegradable organic matter concentration on phenol removal rate from oil refinery wastewater using anaerobic pond system

Abdollah Dargahi,

Kiomars Sharafi,

Ali Almasi,

Fatemeh Asadi

29

Apr

2014

Efficiency of conventional activated sludge in the removal of linear alkylbenzene sulfonate from municipal sewage

Razieh Khamutian,

Abdollah Dargahi,

Meghdad Pirsaheb,

Ali Almasi

19

Jun

2017

Determination of Sequencing Batch Reactor (SBR) Performance in Treatment of Composting Plant Leachate

Hassan Hashemi,

Tahereh Jasemi Zad,

Zahra Derakhshan,

Ali Asghar Ebrahimi

15

Jul

2016

Efficiency of anaerobic stabilization ponds for phenol removal from oil refinery wastewater

Abdollah Dargahi,

Mitra Mohammadi,

Ali Almasi,

Ali Azizi

Import into EndNote Import into BibTex

Share on

Comments

Number of Comments:0

Cited by

Scopus by DOI: 0
Last Update: 1 week ago
Scopus by Title: 0
Last Update: 1 week ago
Scopus by Title (Ref): 0
Last Update: 1 week ago
CrossRef: 0
Last Update: 1 day ago

Metrics

Ordering Reprints

Articles are published under the Creative Commons license stated on each article. No permission or royalty fee is required for uses permitted by that license. CCC handles optional bulk and customized reprint orders. Any quotation covers production and delivery services only, not copyright permission. > Request Reprints from CCC

Search Relations

Author(s):

M Pirsaheb:[PubMed][Scholar]
AR Mesdaghiniya:[PubMed][Scholar]

Peer-reviewed Medical Quarterly

Outlines

Efficiency of Suspended Activated Sludge System in Biological Removal of Phthalic Acid

Abstract

Fulltext

Similar Articles

Effects of biofilm in improvement of activated sludge efficiency for treatment of industrial effluents containing formaldehyde

Effect of biodegradable organic matter concentration on phenol removal rate from oil refinery wastewater using anaerobic pond system

Efficiency of conventional activated sludge in the removal of linear alkylbenzene sulfonate from municipal sewage

Determination of Sequencing Batch Reactor (SBR) Performance in Treatment of Composting Plant Leachate

Efficiency of anaerobic stabilization ponds for phenol removal from oil refinery wastewater

Last Update: 1 week ago

Last Update: 1 week ago

Last Update: 1 week ago

Last Update: 1 day ago