Pamukkale Univ Muh Bilim Derg. 2022; 28(6): 929-936 | DOI: 10.5505/pajes.2021.99491

Ýkincil arýtýlmýþ kentsel atýksulardaki azot ve fosforun toprak-akifer arýtma sistemi kullanýlarak giderilmesinde toprak tiplerinin etkisi

Mesut Ak¹, Ýlayda Top^2
1Pamukkale Üniversitesi Mühendislik Fakültesi, Çevre Mühendisliði Bölümü, Denizli
²Pamukkale Üniversitesi Fen Bilimleri Enstitüsü, Çevre Mühendisliði Ana Bilim Dalý, Denizli

Bu çalýþmada farklý tip iki toprak kullanýlarak hazýrlanmýþ laboratuvar ölçekli bir toprak-akifer arýtma sistemi ile ikincil arýtýlmýþ atýksulardaki azot ve fosforun toprak derinliði boyunca giderim verimi ve toprak tiplerinin arýtma verimine etkisi araþtýrýlmýþtýr. Killi týnlý toprak (KTT) ve týnlý toprak (TT) ile doldurulmuþ kolonlarda besleme atýksuyu olarak Denizli Ýli (Türkiye) kentsel atýksu arýtma tesisi çýkýþýndan alýnmýþ ikincil arýtýlmýþ kentsel atýksu kullanýlmýþtýr. Deneysel çalýþmalar sýrasýnda kolonlara takýlmýþ farklý derinliklerdeki vanalardan alýnan süzüntü numunelerinde toplam-N, toplam-P, çözünmüþ oksijen, pH ve sýcaklýk parametreleri ölçülmüþtür. 75 cm derinliðindeki son vanalardan alýnan süzüntü numunelerinde KTT’de toplam-N %50.85, toplam-P %97.07 oranýnda giderilirken TT’de bu deðerler sýrasýyla %36.72 ve %64.43 olarak hesaplanmýþtýr. Ayrýca, her iki toprak tipinde de toplam-N ve toplam-P giderimi için ilk 10 cm oldukça etkili olmuþtur. Çalýþma sonucunda TT’nin hem toplam-N hem de toplam-P gideriminde KTT’ye göre daha az etkili olduðu, her iki toprakta da derinlik arttýkça giderim veriminin de arttýðý ve deneysel çalýþmalar süresince giderim verimlerinde zamana baðlý herhangi bir azalmanýn olmadýðý görülmüþtür.

Anahtar Kelimeler: Toprak-akifer arýtma sistemi, Yönetilen akifer þarjý, Azot ve fosfor giderimi, Atýksu arýtýmý, Doðal arýtma

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The effect of soil types on nitrogen and phosphorus removal from secondary treated municipal wastewater by using soil-aquifer treatment system

Mesut Ak¹, Ýlayda Top^2
1Department of Environmental Engineering, Pamukkale University, Denizli, Turkey
²Department Of Environmental Engineering,the Graduate School Of Natural And Applied Sciences, Pamukkale University, Denizli, Turkey

In this study, the removal efficiency of nitrogen and phosphorus in secondary treated wastewaters with a laboratory scale soil-aquifer treatment system prepared using two different types of soils and the effect of soil types on treatment efficiency were investigated. In the columns filled with clayey loam soil (CLS) and loamy soil (LS), secondary treated municipal wastewater taken from the effluent of Denizli province (Turkey) municipal wastewater treatment plant was used as feed wastewater. During the experimental studies, the total-N, total-P, dissolved oxygen, pH and temperature parameters were measured in the permeate samples taken from the valves at different depths attached to the columns. In the permeate samples taken from the last valves at a depth of 75 cm, total-N was 50.85% and total-P 97.07% in CLS, while these values were calculated as 36.72% and 64.43% in LS, respectively. In addition, the first 10 cm was highly effective for total-N and total-P removal in both soil types. Consequently, It was observed that TT was less effective than KTT in both total-N and total-P removal, the removal efficiency increased as the depth increased in both soils, and there was no time-dependent decrease in the removal efficiency during the experimental studies.

Keywords: Soil-aquifer treatment system, Managed aquifer recharge, Nitrogen and phosphorus removal, Wastewater treatment, Natural treatment

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