روش سطح پاسخ در بهینه‌سازی تصفیه فاضلاب صنایع فرش با استفاده از فرات پتاسیم

نوع مقاله : مقاله پژوهشی

نویسندگان

1 استادیار گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی قزوین، قزوین، ایران

2 استادیار گروه مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی هرمزگان، هرمزگان، ایران

3 دانشجوی کارشناس ارشد مهندسی بهداشت محیط، دانشکده بهداشت، دانشگاه علوم پزشکی قزوین، قزوین، ایران

چکیده

یکی از روش‌های اکسیداسیون شیمیایی در تصفیه آب و فاضلاب استفاده از فرات پتاسیم است. هدف از این پژوهش بهینه‌سازی مصرف فرات پتاسیم در تصفیه فاضلاب صنایع فرش با به‌کارگیری طرح مرکب مرکزی و روش سطح پاسخ بود. نمونه‌های این مطالعه تجربی از فاضلاب یک کارخانه تولید فرش جمع‌آوری شد. نمونه‌گیری به‌صورت ماهانه و در دو فصل انجام شد. اندازه‌گیری پارامترهای پژوهش بر اساس روش‌های ذکر شده در کتاب استاندارد متد انجام شد. برای تعیین شرایط بهینه حذف COD، رنگ، کدورت و TSS توسط فرات پتاسیم از روش پاسخ سطح و طرح مرکب مرکزی استفاده شد. نتایج نشان داد که دو متغیر مستقل pH و غلظت فرات پتاسیم و اثرات متقابل آنها اثرات معنی‌داری در حذف متغیرهای پاسخ COD، کدورت، رنگ و TSS داشتند. شرایط بهینه برای حذف این چهار آلاینده برای مقدار فرات پتاسیم برابر با160 میلی‌گرم در لیتر و برای pH برابر 5/4 بود. در این شرایط میزان حذف COD، کدورت، رنگ و TSS به ترتیب 86، 84،85 و 83 درصد بود. نتایج نشان داد که مدل درجه دوم آماری، برازش خوبی بر داده‌های آزمایشگاهی دارد. فرات پتاسیم به‌عنوان یک ترکیب مؤثر برای کاهش آلاینده‌های COD، کدورت، رنگ و  TSS از فاضلاب تولیدی صنایع نساجی، به‌ویژه فرش پیشنهاد می‌شود. این فرایند می‌تواند به‌عنوان تصفیه مقدماتی و در مواردی که تصفیه زیستی به‌عنوان تصفیه اصلی به‌کار می‌رود، به‌عنوان تصفیه تکمیلی به‌کار رود.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Response Surface Methodology to Optimize Wastewater Treatment in Carpet Industries by Potassium Ferrate

نویسندگان [English]

  • HamzehAli Jamali 1
  • Kavoos Dindarloo 2
  • Masoud Panahi fard 3
  • Maryam Moradnia 3
1 Assist. Prof. of Environemtnal Health Engineering, School of Health, Qazvin University of Medical Sciences, Qazvin, Iran
2 Assist. Prof. of Environemtnal Health Engineering, School of Health, Hormozgan University of Medical Sciences, Hormozgan, Iran
3 MSc Student of Environemtnal Health Engineering, School of Health, Qazvin University of Medical Sciences, Qazvin, Iran
چکیده [English]

One of the chemical oxidation method for water and wastewater treatment is to use potassium ferrate. The aim of this study was to optimize the potassium ferrate consumption for wastewater treatment in carpet industries using central composite design and response surface methodology. The samples of this experimental study were collected from a carpet factory monthly and during two seasons. Measuring of the studied parameters were carried out based on the standard reference method for experiments in water and wastewater. To determine the optimized conditions for removing COD, color, turbidity and TSS by potassium ferrate, the central composite design and response surface methodology were used. The results showed that two independent variables of pH and potassium ferrate concentration and their interaction had a significant effect on removing COD, turbidity, color and TSS variables. The optimum condition for removal of these four pollutants were 160mg/l for consumption dosage of potassium ferrate and 4.5 for pH. In such condition the removal percentage of COD, turbidity, color and TSS were 86%, 85%, 84% and 83% respectively. In addition, the results indicated that the quadratic model has a good fitting to the experimental data. Potassium ferrate is recommended as an effective compound for reducing COD, color, turbidity and TSS from wastewater produced in textile industries especially in carpet industries. This process can be applied as a preliminary treatment and in cases where biological treatment is the main treatment, it could be used as a supplementary treatment.

کلیدواژه‌ها [English]

  • Industrial Wastewater Treatment
  • Textile Industries
  • Potassium Ferrate
  • Response Surface Methodology
  • optimization

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مجله آب و فاضلاب
دوره 29، شماره 2 - شماره پیاپی 114
خرداد و تیر 1397
صفحه 38-47

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