شیمى کاربردى روز

شیمى کاربردى روز

بررسی تطبیقی کیفیت آب حاصل از رودخانه های خیرآباد و مارون و نقش فیلتراسیون غشایی در تصفیه آن ها

نوع مقاله : مقاله علمی پژوهشی

نویسندگان
1 گروه مهندسی شیمی، دانشکده فنی و مهندسی، دانشگاه صنعتی خاتم الانبیاء بهبهان، بهبهان، ایران
2 گروه مهندسی محیط زیست، دانشکده فنی و مهندسی، دانشگاه آزاد اسلامی، واحد اهواز، اهواز، ایران
3 شرکت آب و فاضلاب استان خوزستان، تصفیه‌خانه آب شرب شهرستان بهبهان – واحد کنترل کیفیت و فرآیند، بهبهان، ایران
چکیده
این مطالعه، بررسی دقیقی از کارایی فیلتراسیون غشایی به عنوان یک فناوری پیشرفته برای تولید آب آشامیدنی از دو منبع متفاوت ارائه می‌دهد. مطالعه با یک تحلیل جامع از پارامترهای فیزیکوشیمیایی و بیولوژیکی آب رودخانه‌های خیرآباد و مارون صورت گرفت. بر این اساس، رودخانه مارون با غلظت مواد جامد محلول (TDS) ۱۳۹۳ میلی‌گرم در لیتر، به طور قابل توجهی غنی‌تر از رودخانه خیرآباد (۷۳۹ میلی‌گرم در لیتر) بود. علاوه بر این، عملکرد فیلتراسیون غشایی روی هر دو نوع آب مورد ارزیابی قرار گرفت. نتایج، ثبات قابل توجه این فناوری را نشان داد. این سیستم به طور مؤثر کدورت را به کمتر از NTU 7/0 کاهش داد و همچنین شاخص چگالی سیلت (SDI) را به طور مداوم زیر 03/0 حفظ کرد. یکی از مزیت‌های مهم، قابلیت حذف انتخابی غشا بود، به طوری که موفق به حذف بخش اعظمی از ذرات و بارمیکروبی نامطلوب شد، در حالی که ترکیب شیمیایی اصلی آب و مواد معدنی مفید آن را حفظ نمود. ارزیابی مقایسه‌ای از مکانیسم‌های تمیز کردن غشا نشان داد که شستشوی معکوس به طور قابل توجهی مؤثرتر از هوادهی است. شستشوی معکوس بازیابی چشمگیر بیش از ۹۴درصد از شار اولیه غشا را به دست آورد که بر برتری آن در حفظ کارایی بلندمدت تأکید داشت. از منظر میکروبیولوژیکی فیلتراسیون غشایی در حذف بخش اعظمی از بار میکروبی موفق بوده و استفاده از این روش به عنوان مرحله مکمل کلر زنی، بخش عمده آلودگی را حذف کرده و سپس از یک ضدعفونی‌کننده سبک برای ایجاد اثر محافظتی در شبکه توزیع میتوان استفاده کرد.
کلیدواژه‌ها
موضوعات

عنوان مقاله English

A Comparative Study on the Water Quality of Khairabad and Maroon Rivers and the Role of Membrane Filtration in Their Treatment

نویسندگان English

Mohammad Jandkaripour 1
Mahdi Elyasi Kojabad 1
Raheleh Haghighi 2 3
1 Department of Chemical Engineering, Faculty of Engineering, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
2 Department of Environmental Engineering, Islamic Azad University, Ahvaz Branch, Ahvaz, Iran
3 Khuzestan Water and Wastewater Company, Drinking Water Treatment Plant – Quality and Process Control Unit, Behbahan, Iran
چکیده English

This study presents a rigorous evaluation of the efficacy of membrane filtration as an advanced technology for producing drinking water from two distinct water sources. The investigation began with a comprehensive comparative analysis of the physicochemical and biological parameters of raw water from the Khairabad and Maroon rivers. This baseline assessment revealed a significant disparity in mineral content, with the Maroon River exhibiting a substantially higher Total Dissolved Solids (TDS) concentration of 1393 mg/L compared to the Khairabad River's 739 mg/L. Subsequently, the performance of the membrane filtration process was assessed for both water types. The results demonstrated the notable consistency of this technology. The system effectively reduced turbidity to below 0.7 NTU and consistently maintained a Silt Density Index (SDI) below 0.03, indicating superior particulate removal and low fouling potential. A key advantage observed was the membrane's selective removal capability, which successfully eliminated undesirable particulates and microbial load while preserving the fundamental chemical composition and beneficial minerals of the water. A comparative evaluation of membrane cleaning mechanisms further revealed that backwashing was significantly more effective than air scouring. The backwashing protocol achieved a remarkable recovery of over 94% of the initial membrane flux, underscoring its superiority in maintaining long-term operational efficiency. Microbiologically, membrane filtration was successful in removing a major portion of the microbial load. Utilizing this method as a complementary pre-treatment stage prior to chlorination can be an optimal strategy that removes the bulk of contaminants, subsequently requiring only a low dose of disinfectant to provide a residual protective effect throughout the distribution network.

کلیدواژه‌ها English

Maroon River
Khairabad River
Ceramic Membrane
Drinking Water
Removal of Microbial Pollutants
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