The feasibility of using lime-soda in reducing the hardness of effluent desalination units of mobin petrochemical

Author(s): Amir Hesam Hassani, Soha Nozhat, Amir Hossein Javid

Mobin Petrochemical Company, Executive utility petrochemical manufacturing complexes. Mobin Petrochemical Company, the largest utilities in the world focused on the NPC adopted in 2000 and was built to the detailed engineeringMobin Petrochemical Company, it is done by the French Tknyp. This project will provide the needs of all petrochemical plants in the area According to the high hardness of Mobin Petrochemical Effluent desalination units have been abandoned to the sea and the difficult problem of this study was to evaluate the effluent. In this study, the feasibility of using the lime - soda, to reduce hard water desalination units of Mobin Petrochemical has been studied. This research have been conducted through laboratory studies and for this purpose, samples of the effluent was done from the Asalooye Mobin Petrochemical desalination plant. All tests required for this study and measurement of quality parameters including total hardness, calcium hardness, magnesium hardness, alkalinity, acidity, total dissolved solids, based on the guidelines published in 1998 in the book is the standard method. The range of use of lime and soda is 10, 50, 100, 250, 500, 750, 1000, 3000 and 5000 mg/l. For this study samples of condensed water (effluent) desalination units petrochemical output analysis and the hardness was measured at different times. Then the range of hardness and various amounts of lime and soda with a stirring rate of decline of total hardness, temporary hardness and permanent hardness was found to reduce the hardness of the chemical efficiency has been determined. The side effects such as temperature, pH and speed intensity decreases more difficult to evaluate and optimize the values of these parameters were determined.

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