DETERMINING THE EFFECTS OF VARIOUS FACTORS ON THE EFFECTIVENESS OF ULTRASONIC TREATMENT OF SECONDARY EFFLUENT

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

HADADI SAKINEH; NASERI S.; VAEZI F.; MAHVI A.H.; NABIZADEH NOUDEHI R.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: WATER AND WASTEWATER Year:2007 | Volume:18 | Issue:3 (63) Page(s): 31-38

Download Full-Text

Persian Verion

View:

2,084

Download:

Cites:

Information Journal Paper

Title

DETERMINING THE EFFECTS OF VARIOUS FACTORS ON THE EFFECTIVENESS OF ULTRASONIC TREATMENT OF SECONDARY EFFLUENT

Author(s)

Keywords

ORGANIC MATTERQ3

SECONDARY EFFLUENTQ4

ULTRASONICQ3

SUSPENDED SOLIDSQ3

HYDROGEN PEROXIDEQ3

Abstract

Sonochemical degradation which combines destruction of the target compounds by tree radical reaction and thermal cleavage is a recent advanced oxidation process (AOP) with the potential to be effective for removing low concentrations of organic pollutants from aqueous streams. AOP s typically involve the generation and use of the hydroxyl tree radical as a strong oxidant to destroy compounds. The decomposition rate of pollutants by ultrasound depends on various factors. In this study, the effects of pH, initial concentration, HYDROGEN PEROXIDE addition, and TSS concentration on the decomposition of organics in the SECONDARY EFFLUENT have been investigated. COD analysis was taken as the index for organic concentration and two ULTRASONIC frequencies of 35 kHz and 130 kHz were used for treatment of wastewater samples. Results indicated that increases in organic concentration within the range of 20-60 mg/L would decrease organic removal efficiency from wastewater (p<0.05). But this efficiency may be improved by increasing TSS and H2O2 concentration levels. However, the effect of H2O2 depends on its concentration such that no considerable increase was detected in organic removal efficiency with £ 5mg/L of this chemical. Higher organic removal efficiencies can be expected only when H2O2 is added at a concentration level of 20 mg/L (p<0.01).Changes in pH level had no detectable effect on organic removal and for either methods of treatment (the ultrasound or the combined ultrasound/ H2O2), the efficiency of organic treatment did not increased neither at an acidic pH (=3) nor at a basic pH (=11). This result clearly shows the independence of the treatment on pH. Finally, it is noteworthy that increased TSS level (30 mg/L) has a positive effect on ultrasound treatment so that a nearly 40 percent improvement was observed in organic removal efficiency in this experiment. It may be concluded that increased TSS and H2O2 both increase the effectiveness of the ultrasound whereas, organic removal efficiency may decrease in this method as a result of increased concentration levels of these pollutants. Furthermore, pH variation was found to have no considerable effect on the treatment process.

Cites

No record.

References

No record.

Cite

APA: Copy

HADADI, SAKINEH, NASERI, S., VAEZI, F., MAHVI, A.H., & NABIZADEH NOUDEHI, R.. (2007). DETERMINING THE EFFECTS OF VARIOUS FACTORS ON THE EFFECTIVENESS OF ULTRASONIC TREATMENT OF SECONDARY EFFLUENT. WATER AND WASTEWATER, 18(3 (63)), 31-38. SID. https://sid.ir/paper/103895/en

Vancouver: Copy

HADADI SAKINEH, NASERI S., VAEZI F., MAHVI A.H., NABIZADEH NOUDEHI R.. DETERMINING THE EFFECTS OF VARIOUS FACTORS ON THE EFFECTIVENESS OF ULTRASONIC TREATMENT OF SECONDARY EFFLUENT. WATER AND WASTEWATER[Internet]. 2007;18(3 (63)):31-38. Available from: https://sid.ir/paper/103895/en

IEEE: Copy

SAKINEH HADADI, S. NASERI, F. VAEZI, A.H. MAHVI, and R. NABIZADEH NOUDEHI, “DETERMINING THE EFFECTS OF VARIOUS FACTORS ON THE EFFECTIVENESS OF ULTRASONIC TREATMENT OF SECONDARY EFFLUENT,” WATER AND WASTEWATER, vol. 18, no. 3 (63), pp. 31–38, 2007, [Online]. Available: https://sid.ir/paper/103895/en

Related Journal Papers