بررسی کارآیی فرایند تلفیقی انعقاد و شناورسازی الکتریکی در تصفیه فاضلاب صنعت فرآوری محصولات لبنی
فصلنامه علمی پژوهشی بهداشت در عرصه,
دوره 4 شماره 1,
20 فروردین 2016
,
صفحه 1-10
https://doi.org/10.22037/jhf.v4i1.13152
چکیده
زمینه و اهداف: فاضلاب صنایع لبنی از مهمترینترین منابع آلاینده برای محیطهای آبی و خاکی می باشد. هدف این مطالعه بررسی میزان حذف COD، کدورت و تغییرات pH توسط فرایند انعقاد و شناورسازی الکتریکی در تصفیه فاضلاب لبنی است
. مواد و روشها: مطالعه حاضر یک مطالعه تجربی-آزمایشگاهی است که با رعایت موازین اخلاقی و اخذ مجوزهای لازم بر روی فاضلاب کارخانه فرآوری محصولات لبنی هموطن دماوند در راکتور الکتروشیمیایی استوانهای شکل از جنس استیل (الکترود کاتد)، آلومینیوم (الکترود آند) با اتصال دوقطبی سری انجام و تاثیر متغیرهایpH، زمان واکنش، هدایت و شدت جریان الکتریکی در کارآیی فرایند تلفیقی انعقاد و شناورسازی الکتریکی مورد بررسی قرار گرفت.
یافته ها: نتایج بدست آمده نشان داد که pH، شدت جریان الکتریکی و زمان واکنش تاثیر قابل ملاحظهای در عملکرد راکتور داشتند و مقادیر بهینه به ترتیب 9، 3 آمپر و60 دقیقه حاصل گردید. تحت شرایط بهینه، راندمان حذف COD و کدورت به ترتیب برابر با 70/9 و 99/08 درصد محاسبه شد و pH پساب خروجی از راکتور 1/6 واحد افزایش یافت. همچنین هدایت الکتریکی محلول تاثیری بر روی حذف آلاینده مورد مطالعه نشان نداد و شاخص حجمی لجن تحت شرایط بهینه 89/01 ml/g بدست آمد
نتیجه گیری: نتایج نشان داد که فرایند تلفیقی انعقاد و شناورسازی الکتریکی میتواند به عنوان یک روش سازگار با محیط زیست در تصفیه فاضلاب صنایع لبنی به منظور تصفیه اولیه و آمادگی آن برای ورود به واحد بیولوژیکی به علت افزایش نسبت BOD5/COD از0/41 ) فاضلاب خام( به 0/79(پساب) مطرح گردد
- فاضلاب صنایع لبنی، انعقاد و شناورسازی الکتریکی،COD ، کدورت
ارجاع به مقاله
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