Economical Evaluation of Aluminum Anodizing Plants Sludge Reusing

Subject Areas : Water and Environment

Seyyed Mostafa Khezri ¹ , Naser Moharram-Nejad ² , Maryam Artayefeh ³

1 - Faculty of Environment and Energy, Science and Research Branch Islamic Azad University, Tehran, IRAN
2 - Faculty of Environment and Energy, Science and Research Branch Islamic Azad University, Tehran, IRAN
3 - Master of Science in Economics of Environment, Environment and Energy, Science and Research Branch Islamic Azad University, Tehran, IRAN

Received: 2008-04-27 Accepted : 2008-11-10 Published : 2009-09-23

Keywords: Aluminum Anodizing, Sludge, FireBrick, Coagulant, Economical Evaluation,

Abstract :

Aluminum anodizing plants produce a significantvolume of sludge in the final step of wastewatertreatment. If this sludge is not disposed by thecommon methods, it produces several environmentalproblems, which is taken into account as an imposedcost.The object of this study is economical evaluation ofaluminum anodizing plants sludge reusing, to preventreleasing it in the environment and reducing waterand soil pollutions. Therefore it causes environmentalconservation in one hand and a suitable economicalsaving can be achieved for these plants in the otherhand.For this purpose, data gathering about aluminumanodizing process, the related wastewater treatmentunits, and various uses of the sludge was performed.It is found that if anodizing sludge uses as rawmaterial in fire- brick preparation, annually 780 million Rials benefit can be achieved by this plant.Furthermore, if anodizing sludge uses as coagulant inmunicipal wastewater treatment, annually 820 millionRials saving can be obtained by municipal wastewatertreatment plants.

References:

1. Correia, A.2005.Municipal Wastewater Treatment
with Anodizing Solid Waste. Desalination (2005)185
350-341.www.elsevier .com/locate/desal.
2 . غفورى،پریسا. 1384 ، بررسى اثرات زیست محیطى ناشى از لجن واحدهاى
آنودایزینگ آلومینیوم و ارایه راه کارهاى مناسب، پایانامه کارشناسى ارشد
علوم محیط زیست، دانشکده محیط زیست و انرژى، دانشگاه آزاد اسلامى
واحد علوم و تحقیقات.
1 3 .کارخانه آنودایزینگ آلومینیوم آبسکون،ایران، 385
4 . خضرى،مصطفى. 1383 .کارگاه آموزشى تصفیه پساب آنودایزینگ در
صنعت آلومینیوم،وزارت صنایع و معادن ،دفتر امور محیط زیست
5 . معاونت تحقیقاتى سازمان حفاظت محیط زیست، 1371 ، استاندارد خروجى
فاضلابها،انتشارات دفتر آموزش زیست محیطى.
6 . شریعت پناهى،م. 1371 ،اصول کیفیت و تصفیه آب وفاضلاب،موسسه
انتشارات و چاپ دانشگاه تهران
7 .توکلى،نادیا. 1377 .بررسى تصفیه پذیرى پساب واحد آنودایز آلومینیوم،
پایانامه کارشناسى ارشد مهندسى محیط زیست ،دانشکده محیط زیست و
انرژى،دانشگاه آزاد اسلامى واحد علوم و تحقیقات.