آمار
| تعداد نشریات | 23 |
| تعداد شماره‌ها | 368 |
| تعداد مقالات | 2,890 |
| تعداد مشاهده مقاله | 2,566,209 |
| تعداد دریافت فایل اصل مقاله | 1,821,866 |
The effect of HCl and H2SO4 injection to reverse osmosis on TDS and LSI for reducing fouling | ||
| Journal of Applied Research in Water and Wastewater | ||
| مقاله 5، دوره 9، شماره 2، اسفند 2022، صفحه 141-146 اصل مقاله (807.99 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22126/arww.2023.8312.1271 | ||
| نویسندگان | ||
| Nima Asadi1؛ Hamid Soleimanimehr* 1؛ Aida Mohammad Sadegh2 | ||
| 1Department of Mechanical Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran. | ||
| 2Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran. | ||
| چکیده | ||
| Due to the quality of the water entering the water purifiers, sometimes the amount of solutes and hardness in the water is so high that after a short time, these systems become clogged or full. To solve this problem. Several methods have been proposed in this study, acid injection and its effect on reverse osmosis system by wave software have been investigated. To ensure the condition and accuracy of the incoming water, the necessary tests were performed through the laboratory and the condition of the water and the number of ions and its salts were reported. By injecting acid into the inlet water, the pH value was reduced from 7.58, which is the normal pH of the water, to 5 by micrograph in 0.2 intervals, and after examination, the following results were obtained: With decreasing pH, the LSI number has a suitable decrease, so that at pH 6.1 and lower, the LSI number is negative and this indicates the lack of premature fouling. However, with this reduction, the acidic property of the treated water increases and the possibility of chemical corrosion of the industrial equipment used increases, on the other hand, by injecting acid and lowering the pH, the amount of TDS increased, which should be tried in different ways to minimize this amount. In comparison between injections of two acids performed under the same conditions, the amount of TDS at the time of H2SO4 injection at the pH limit was 10% less than the time of HCl injection. | ||
| کلیدواژه‌ها | ||
| Salt rejection؛ Reverse osmosis؛ Desalination؛ Fouling؛ Brakish water؛ Acid | ||
| مراجع | ||
|
Abbas A, and Rand Rafea A., Design of reverse osmosis membrane for softening of groundwater at the site of agriculture College –University of Tikrit –Iraq by using ROSA-72 software, Materialstoday 42 (2021) 2058-2063. Aghababaei N., Reverse osmosis design with IMS design software to produce drinking water in Bandar Abbas, Iran, Journal of Applied Research in Water and Wastewater 7 (2017) 314-318. Amy G., Fundamental understanding of organic matter fouling of membranes, Desalination 231 (2007) 44-51. Amiri M., and Samiei M., Enhancing permeate flux in a RO plant by controlling membrane fouling, Desalination 207 (2007) 361-369. Asadi N., Soleimanimehr H., Alinia-ziazi A., An investigation on boiler feed water treatment using reverse osmosis and ion exchange by WAVE software, Journal of Applied Research in Water and Wastewater 8 (2021) 124-128. Devesa R., and Dietrich AM., Guidance for optimizing drinking water taste by adjusting mineralization as measured by total dissolved solids (TDS), Desalination 439 (2018) 147-154. Guo W., Ngo HH., Li J., A mini-review on membrane fouling. Bioresource technology 122 (2012) 27-34. Kim Y., Elimelech M., Shon H.K., Hong S., Combined organic and colloidal fouling in forward osmosis: Fouling reversibility and the role of applied pressure, Journal of Membrane Science 460(2014) 206-212 Mi B., and Elimelech M., Organic fouling of forward osmosis membranes: Fouling reversibility and cleaning without chemical reagents, Journal of Membrane Science 348 (2010) 337-345. Stillwell S.A., and Webber M.E., Predicting the specific energy consumption of reverse osmosis desalination, Water 8 (2016) 1-18. Wang B.B., Research on drinking water purification technologies for household use by reducing total dissolved solids (TDS), PLoS ONE 16 (2021) 0257865. Yao W., Porto R.D., Gallagher D.L., Dietrich A.M., Human exposure to particles at the air-water interface: Influence of water quality on indoor air quality from the use of ultrasonic humidifiers, Environment International 143 (2020) 105902. Alert Performance Chemicals Gujarat Pvt. Ltd. Feed water characteristics as per IS:10392-1982. FILMTEC reverse osmosis membranes technical manual, Version 9, 2021. | ||
|
آمار تعداد مشاهده مقاله: 177 تعداد دریافت فایل اصل مقاله: 931 |
||