Evaluation of Wastewater Treatment Performances for Municipalities by Using MCDM Methods: Case Study in Turkey

Öz

Reusing of the wastewater has a vital importance because of limited natural water resources all around the world. Recycled wastewater can be used in many areas such as agriculture, industry, cleaning etc. Treatment of wastewater is one of the important tasks of metropolitan municipalities. The aim of this study is to evaluate the performances of wastewater treatment services provided by the metropolitan municipalities in Turkey using a hybrid approach using Entropy, SAW, MOORA and TOPSIS methods. In the scope of the study, four criteria have been considered as the ratio of the municipal population served by the treatment plant to the total population, the ratio of the municipal population served by the sewerage system to the total population, treatment rate of discharged water, increase rate of treated water in treatment plants. A case study has been conducted in Turkey and the metropolitan municipalities have been ranked depending on their performance. Aydin Metropolitan Municipality as the highest municipality and Kahramanmaraş Metropolitan Municipality as the lowest municipality have been determined. In Western cities performance is high, performance goes down as it goes east.

Anahtar Kelimeler

• Wastewater treatment,SAW,TOPSIS,MOORA

Evaluation of Wastewater Treatment Performances for Municipalities by Using MCDM Methods: Case Study in Turkey

Öz

Atıksuyun yeniden kullanımı, tüm dünyadaki sınırlı doğal su kaynakları nedeniyle hayati öneme sahiptir. Geri dönüştürelen atıksu, tarım, sanayi, temizlik vb. birçok alanda kullanılabilir. Atık suyun arıtımı, büyükşehir belediyelerinin önemli görevlerinden biridir. Bu çalışmanın amacı, Türkiye'deki büyükşehir belediyeleri tarafından sağlanan atıksu arıtma hizmetlerinin Entropi, SAW, MOORA ve TOPSIS yöntemlerini kullanan hibrit bir yaklaşımla performanslarını değerlendirmektir. Çalışma kapsamında, arıtma tesisleri ile hizmet verilen belediye nüfusunun toplam nüfusa oranı, kanalizasyon sistemi ile hizmet verilen belediye nüfusunun toplam nüfusa oranı, boşaltılan suyun arıtılma oranı ve arıtma tesislerinde arıtılmış su oranı olmak üzere dört kriter dikkate alınmıştır. Türkiye'de bir vaka çalışması yapılmış ve büyükşehir belediyeleri performanslarına göre sıralanmıştır. Performansı en yüksek belediye olarak Aydın Büyükşehir Belediyesi en düşük belediye olarak ise Kahramanmaraş Büyükşehir Belediyesi tespit edilmiştir. Batı şehirlerinde performanslar yüksek iken, doğuya gidildikçe performans düşmektedir.

Anahtar Kelimeler

• Atıksu arıtımı,SAW,TOPSIS,Entropi,MOORA

Kaynakça

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