SBR降解動力學研究

采用SBR工藝處理有機廢水，在已有工藝條件下對生物降解動力學進行了研究，得出生物降解反應為一級反應。研究表明，用Monod公式能較好反映出有機物的降解規律，確定了其動力學參數Vmax=14.6306 d-1，Ks=83.2993 mg/L，得出SBR降解動力學模型為V=14.6306X.S/(83.2993+S)。利用以動力學為基礎的動態模擬法優化SBR工藝，實驗結果表明該方法合理可行，對SBR的設計與運行有一定的指導作用，可作為SBR反應器擴大實驗和設計的依據。
Organic wastewater was treated in a lab scale sequencing batch reactor (SBR). The objective of this study was to investigate the degradation kinetics model of SBR under current operating conditions. The reaction of biodegradation was proved to be first order reaction. Monod formula can appropriately reflect the degradation law of organic pollutants. The kinetic constants V_max and K_s were 14.6306 d⁻¹ and 83.2993 mg/L respectively. Degradation kinetics model of SBR was set up as V= 14.6306X·S/(83.2993+S). Furthermore, dynamic simulating method based on degradation kinetics was used to modify the design and operation of SBR. The experimental results showed that this method was feasible. It can lay the foundation for the design and operation of SBR. Copyright © 2009 環境工程學報編輯部.