Providing Operational Solution to Reduce Water Consumption of Cooling Water Cycle in Montazer Ghaem Power Plant by Chemical Modification of Clarifier Water

Ghahraman Afshar, Majid; Azimi, MohammadReza; Habibi, Nemat; Esmaeilpour, Mohsen

doi:10.22034/ijche.2023.405752.1331

Providing Operational Solution to Reduce Water Consumption of Cooling Water Cycle in Montazer Ghaem Power Plant by Chemical Modification of Clarifier Water

Articles in Press

Document Type : Original Article

Authors

Majid Ghahraman Afshar ¹

MohammadReza Azimi ²

Nemat Habibi ³

Mohsen Esmaeilpour ⁴

¹ Assistant Professor, Chemistry and Process Research Department, Niroo Research Institute (NRI), Tehran, Iran

² Department of Chemistry, Montazer Ghaem Power Plant

³ Department of Chemistry, Monatezar Ghaem Power Plant

⁴ Chemical and Process Engineering Department, Niroo Research Institute, Tehran, Iran

10.22034/ijche.2023.405752.1331

Abstract

Increasing the conductivity as well as the deposition rate leads to acceleration and intensification of corrosion processes that must be controlled and prevented. In this proposed project, the main aim is to provide solutions such as adding coagulants, as well as determining the optimal concentration of reagent, reducing the conduction rate and water deposition factor of the clarifier water. Therefore, by controlling the conductivity and sedimentation rate of the clarifier water, it is possible to control and prevent the corrosion rate of the cooling tower water. According to the experimental data, the optimum chemical condition is obtained in the amount 80 ppm CaOH, 15 ppm FeCl3, 25 ppm Na2CO3 and PAC as the best coagulant in 5 ppm concentration range. The retention time in this test is 50 minutes, which is performed with a fast cycle and a slow cycle. The time of 40 seconds is the initial time to complete the reaction of CaOH and Na2CO3 in water. In these values, the chemical conditions of the water were optimized and the turbidity is reached a value around zero. In the optimization step, the COD of clarifier water is changed within the range of 1 to 40 ppm, while the BOD (Biological Oxygen Demand) value of clarifier water and raw water are kept constant at zero level.

Keywords

Montazer Ghaem Power Plant

Recovery of Blowdown

Water Treatment

Poly Aluminum Chloride (PAC)

Modifying Pattern of Water Consumption

Subjects