MELENDİZ NEHRİ SU KALİTESİNİN FARKLI KULLANIM AMAÇLARINA GÖRE DEĞERLENDİRİLMESİ

Bu çalışmada Aksaray İli Melendiz Nehri’nin su kalitesi, Aralık 2015 ile Kasım 2016 tarihleri arasında 9 örnekleme noktasında izlenilmiş ve analiz sonuçları su kalite indeksleri (SKİ) vasıtasıyla modellenerek farklı kullanım amaçlarına göre değerlendirilmiştir. Yönetmeliklerimize göre alkalinite, sertlik, renk, klorür, nitrat, fosfat, iletkenlik parametrelerinin içme suyu kalitesi açısından iyi kalitede olduğu belirlenmiştir. Bunun aksine biyolojik oksijen ihtiyacı, pH, toplam çözünmüş madde, çözünmüş oksijen ve bulanıklık değerlerinin zaman zaman sınır değerleri aştığı görülmüştür. Ayrıca su kaynağında tüm mevsimlerde mikrobiyal kirlenme olduğu tespit edilmiştir. Tüm bu parametreler açısından su kaynağının konvansiyonel proseslerle arıtımı sonrasında kullanma/içme suyu temini amacıyla kullanılabileceği sonucuna varılmıştır. Fiziko-kimyasal ve mikrobiyolojik parametreler Ulusal Sanitasyon Vakfı ve Dinius Su Kalite İndekslerine göre değerlendirildiğinde ise su kaynağının durumunun “orta (63,834)” ve “kötü (55,223)” seviyede olduğu tespit edilmiştir. SKİ’lere göre su kaynağının mevcut haliyle sulama ve endüstriyel amaçlı olarak, arıtılması sonrasında ise içme suyu olarak kullanılabileceği sonucuna varılmıştır.

Anahtar Kelimeler:

melendiz nehri, su kullanım amacı, su kalite indeksi, ulusal sanitasyon vakfı su kalite indeksi, dinius su kalite indeksi

Evaluatıon of Melendiz Rıver Water Qualıty Accordıng To Dıfferent Use Purpose

In this study, the water quality of the Melendiz River in Aksaray Province was evaluated by means of water quality index models for different usage purposes. According to our regulations, alkalinity, hardness, color, chloride, nitrate, phosphate and conductivity parameters were found to be of good quality. In contrast, BOD5, pH, TDM, dissolved oxygen, turbidity values were found to exceed the limit values at sometimes. In addition, microbial contamination has been detected in all seasons in the water source. The evaluation of the water source in terms of all these parameters, it was concluded that the water source can be used for treatment/drinking water supply after treatment by conventional processes. When the physicochemical and microbial data were evaluated according to the National Sanitation Foundation and Dinius Water Quality Indexes, it was concluded that the water source was “medium” and “bad” level and so it could be used only irrigation and industrial purposes and also used as drinking water after treatment.

Keywords:

melendiz river, water usage purpose, water quality index, national sanitation foundation water quality index, dinius water quality index,

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