Investigation of pollution related to sludge obtained from the effluent treatment Of slaughter house and making the practical proposal (Study was conducted in mash had slaughter house)

Subject Areas : Water and Environment

Mostafa Khezri ¹ ( Faculty of Environment and Energy, Science and Research Campus, Islamic Azad University, Tehran, Iran )
Masoud Monavari ² ( Faculty of Environment and Energy, Science and Research Campus, Islamic Azad University, Tehran, Iran )
Parvin Farshchi ³ ( Faculty of Environment and Energy, Science and Research Campus, Islamic Azad University, Tehran, Iran )
Shadi Kafi Mallak ⁴ ( Faculty of Environment and Energy, Science and Research Campus, Islamic Azad University, Tehran, Iran )

Received: 2007-12-26 Accepted : 2008-05-06 Published : 2011-03-21

Keywords: Mashhad slaughter house, sludge effluent treatment, animal feed, concentrate, cattle ration,

Abstract :

Sludge, as an additional element in the process of treatment will cause numerous problems in long runs. Therefore, it has to be collected and disposed in sanitary ways. Disposing the sludge requires certain rules and it is often polluted by not following the environmental rules. Pollution will be transferred to human and agriculture crops through water and soil. The best method to control this problem is to utilize that material in an efficient way. In this paper, we proposed an efficient method to decrease the pollution of sludge obtained from Mashhad slaughter house, as an applicable sample, and we tried to optimize its usage in an efficient application. We sampled the sludge, obtained from the treatment process in Mashhad slaughter house, for several times. Then, we carried out the relative tests such as: chemical pollution (BOD, COD, PH, Nitrate, and phosphate), heavy metal (As, Hg, Ni, Mn, Cu, Pb, Cr, Cd, Co), microbiology pollution, and animal feeding tests on the sludge samples. The obtained results indicate that the sludge could be utilized as animal feed. We prepared the cattle ration by using the utilized sludge as a portion. After cattle ration, the animal feed was prepared together with sludge and other elements. For measuring the value of the obtained ration, different experiments were conducted and outcome was compared with other factories' concentrated animal feed obtained forms such as: rice bran, wheat bran, straw, sugar beet pulp and barley. By drawing the relative curves, results showed that, the sludge obtained from Mashhad slaughter house satisfied the animal feed standard rules and perform better than other factories' products. To the best of our knowledge, our proposed method is the first research which studies the sludge obtained from the treatment process and tries to utilize its application efficiently in an animal feed ration which is very important and significant applicable research work.

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