الأثر البيئي لمطروحات ماء مجرى الخرازي ومدى تأثيره على نوعية ماء نهر دجلة ضمن مدينة الموصل / العراق

القسم: Articles
إصدار
مجلد 4 عدد 2 (2026): Journal of Rafidain Environment
الصفحات
72-92

الملخص

   أجريت الدراسة الحالية على مجرى الصرف الصحي (الخرازي) وصولاً الى نهر دجلة حيث جمعة العينات من عشرة مواقع , المواقع الستة الاولى كانت على المجرى اما السابع فهو ملتقى المجرى بنهر دجلة , والثامن الى العاشر في نهر دجلة لمعرفة مدى قدرة نهر دجلة على التنقية الذاتية .اظهرت الدراسة الحالية ان معدل درجة الحرارة الماء يلغ 20.8 مº في الموقع الرابع والخامس , في حين سجل اقل معدل لدرجة حرارة 18.2 مº في الموقع العاشر. ان اعلى معدل لقيمة للتوصيلية الكهربائية كان  912 µ S/cm في الموقع الخامس , بينما سجل اقل معدل لقيم لتوصيل الكهربائي كان 504 µ S/cm في الموقع الثامن والتاسع . وان قيم معدلات تراكيز الاوكسجين كانت اقل قيمة هي 0.7 ملغم / لتر في الموقع الخامس بينما سجلت اعلى قيمة لتركيز الاوكسجين كانت 7.2 ملغم / لتر في الموقع العاشر . وتراوحت معدلات تراكيز المتطلب الحيوي للأوكسجين BOD5 بين (0.7 - 3.7 )  ملغم / لتر, وبينت الدراسة ان تركيز ايون الكالسيوم في معظم المواقع اكبر من تركيز ايون المغنيسيوم. بينما ايون الكلوريد سجلت اعلى قيمة 68 ملغم / لتر في الموقع الرابع و سجلت ادنى قيم لمعدل تركيز ايونات الفوسفات 0.51 ملغم / لتر في الموقع الثامن والعاشر, وطبقت عشرة معاير لحساب جودة المياه لشرب (WQI) حيث ان سجلت أعلى قيمة لدليل 83.5 في الموقع التاسع في النهر، بينما سجلت ادنى قيمة الدليل 58.2 في الموقع الثالث من المجرى، تشير نتائج الدراسة في الموقع العاشر الى انخفاض جميع القيم للمعلمات مقارنة مع المواقع الاخرى وهذا مؤشر على  قدرة النهر على التنقية الذاتية.

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المؤلفون

لازم حمادي بحر الجنابي

عبد المنعم محمد علي كنه

المعرفات

معرف الكائن الرقمي DOI: 10.33899/jre.v4i2.64221

الإحصائيات

حقوق الطبع والنشر والتراخيص
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