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TREATMENT OF TANNERY WASTEWATER BY INTERMITTENT CYCLE EXTENDED AERATION SYSTEM/Truong Trong Danh, Nguyen Dinh Tri, Nguyen Tan Phong, Scientific Journal Of Thu Dau Mot University, No 6(31) –2016, Dec. 2016

A continuous-flow sequencing batch reactor known as the intermittent cycle extended aeration system –sequencing batch reactor (ICEAS –SBR) was used to investigate the treatability of the tannery wastewater. A model made from poly acrylic with a capacity of 20 liters was utilized to evaluate COD and nitrogen removal while the loading rate increased up to 2.0 kg COD/m3.day. The polyvinyl alcohol (PVA) media was used to compare with the non-media condition. At the loading rate of 1.5 kg COD/m3.day with or without media, the removal efficiency was 83.57% and 79.17% COD, 54.01% and 43.33% TKN, 51.48% and 41.72% TN, respectively. It proved that PVA media helped increasing the removal efficiency. However, because of high concentration of the influent suspended solid and low C/N ratio input, the removal efficiency was notquite high

Từ khóa: ICEAS; PVA; Tannery wastewater

6 p hien 25/05/2017 398 2

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