NOVEL UASB GAS-SOLID SEPARATOR DESIGN TO ENHANCE UPFLOW VELOCITY WITHOT INCREASED SLUDGE WASHOUT

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.

HAKIM JAVADI MAJID; TORKIAN A.; HASHEMIAN S.J.A.D.

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

Journal Paper

Paper Information

Journal: MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING) Year:2009 | Volume:24 | Issue:46.2 Page(s): 163-168

Download Full-Text

Persian Verion

View:

858

Download:

Cites:

Information Journal Paper

Title

NOVEL UASB GAS-SOLID SEPARATOR DESIGN TO ENHANCE UPFLOW VELOCITY WITHOT INCREASED SLUDGE WASHOUT

Author(s)

HAKIM JAVADI MAJID | TORKIAN A. | HASHEMIAN S.J.A.D. | Issue Writer Certificate

Keywords

UASBQ3

ANAEROBIC TREATMENTQ3

GSSQ3

UPFLOW VELOCITYQ3

GRANULAR SLUDGEQ3

Abstract

In high-rate anaerobic wastewater treatment reactors such as upflow anaerobic sludge blanket (UASB) system, gas solids separator (GSS) plays a critical role in maintaining stability in reactor performance. Operational and performance problems of the current design include complexity and clogging of gas collection pipes due to sludge entry, excessive number of gas separators, and limitations on upflow velocities due to potential sludge washout. To overcome these problems, a new design is proposed in which the total volume of GSS is filled with gas-supernatant and flow is partially diverted to a side basin adjacent to the main reactor. In this basin, gas is separated from supernatant, the remaining good sludge is settled and returned back to the reaction zone in the main reactor, and undesirable sludge and the associated flow is returned to the influent pump station for recycle back into the bottom of reactor.Advantages of the new design include the possibility of increasing velocity in the blanket zone without changing velocity in the clarification region. The degree of increase is dependent on the extent of flow diversion but an operational velocity of about 2.5 mhr-1 is easily achievable even though much larger velocities are theoretically possible. Inactive sludge accumulated outside the turbulent domain of inlet openings is also made available.Horizontal velocities of at least 20 mhr-1 underneath GSS units due to flow into the side basin is a new phenomenon in the new design which further improves gas separation. Since lesser total overlap area is needed due to larger and fewer number of settlers in the reactor (reduction factor of around 70%), more area for fluid flow is available resulting in lower inter-GSS velocities. Furthermore, larger settlers are easier and more economical to construct and gas-collecting pipes and auxiliary appurtenances to secure GSS structures are eliminated with consequent reduced capital and operating expenses.

Cites

No record.

References

No record.

Cite

APA: Copy

HAKIM JAVADI, MAJID, TORKIAN, A., & HASHEMIAN, S.J.A.D.. (2009). NOVEL UASB GAS-SOLID SEPARATOR DESIGN TO ENHANCE UPFLOW VELOCITY WITHOT INCREASED SLUDGE WASHOUT. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), 24(46.2), 163-168. SID. https://sid.ir/paper/128313/en

Vancouver: Copy

HAKIM JAVADI MAJID, TORKIAN A., HASHEMIAN S.J.A.D.. NOVEL UASB GAS-SOLID SEPARATOR DESIGN TO ENHANCE UPFLOW VELOCITY WITHOT INCREASED SLUDGE WASHOUT. MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING)[Internet]. 2009;24(46.2):163-168. Available from: https://sid.ir/paper/128313/en

IEEE: Copy

MAJID HAKIM JAVADI, A. TORKIAN, and S.J.A.D. HASHEMIAN, “NOVEL UASB GAS-SOLID SEPARATOR DESIGN TO ENHANCE UPFLOW VELOCITY WITHOT INCREASED SLUDGE WASHOUT,” MECHANICAL ENGINEERING SHARIF (SHARIF: MECHANICAL ENGINEERING), vol. 24, no. 46.2, pp. 163–168, 2009, [Online]. Available: https://sid.ir/paper/128313/en

Related Journal Papers