International Journal of Materials Chemistry and Physics
Articles Information
International Journal of Materials Chemistry and Physics, Vol.5, No.1, Dec. 2019, Pub. Date: Feb. 20, 2020
Investigation of Wastewater Treatment by Novel Method as Main Stage in the Treatment Process
Pages: 1-45 Views: 663 Downloads: 169
[01] Peyman Haghighi, Department of Chemical Engineering, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran.
[02] Farshad Farahbod, Department of Chemical Engineering, Firoozabad Branch, Islamic Azad University, Firoozabad, Iran.
The huge amount of waste water from refineries is produced daily. The drainage of wastewater into soil and sea will be disturbed the environment in times. The techniques of wastewater treatment have been considered, recently. The commercial mineral coagulants, Zinc oxide as nano coagulants are used in the pretreatment process. The main items for treatment of oily wastewater is investigated in this section. The practical variables such as ammonia removal, heavy metals removal, sulfide removal, SVI and phenol removal are evaluated in this research. Moreover, in softening process, the Sodium Carbonate and Sodium Hydroxide must be added to the wastewater. The performance of usage of nano zinc oxide as coagulant is evaluated in this work, experimentally. The coagulants are the matters used to decrease total hardness of wastewater. The pretreatment process includes 3 steps: coagulation, flocculation and sedimentation. Improving the efficiency of pretreatment process depends on water specifications and also the operating parameters. The results show the lower consistency with the coagulant structure or don’t react well and so don’t show much increase in the percentage of sulfide removal. The empirical results show the effect of usage of nano coagulant in reduction of slug volume index. The changes in the amount of nano coagulant from 1 to 2.5 gr show the increase in the amount of reduction ratio of slug volume index from 20 to 32, respectively.
Pre-treatment, Waste Stream, Petroleum, Environmental Problems, Performance
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