|Table of Contents|

Simulation of Step-feeding A/O Biological Contact Oxidation Process(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2021年第05期
Page:
908-916
Research Field:
水资源与环境
Publishing date:

Info

Title:
Simulation of Step-feeding A/O Biological Contact Oxidation Process
Author(s):
WU Pei1; 2;  ZHU Ji-tao1; 2;  GU Xin1; 2;  ZHANG Kai1; 2;  LENG Jun-tong1; 2;  WANG Zi-jie1; 2;  HU Bo1; 2*
(1. School of Civil Engineering, Chang'an University, Xi'an 710061, Shaanxi, China; 2. Key Laboratory of Water Supply & Sewage Engineering of Ministry of Housing and Urban-rural Development, Chang'an University, Xi'an 710061, Shaanxi, China)
Keywords:
step-feeding;  anoxic/oxic;  biological contact oxidation process;  ASM1;  flow rate distribution coefficient;  reflux ratio;  removal efficiency;  simulation
PACS:
X703.1
DOI:
10.19814/j.jese.2021.03045
Abstract:
A mathematical model for step-feeding A/O biofilm process was constructed based on activated sludge model No.1(ASM1)and Fick's Law, and a three-step-feeding A/O biological contact oxidation process treating high strength domestic wastewater was utilized for calibration and verification of the model. Eventually, the flow rate distribution coefficient was optimized by the proposed model. The results show that step-feeding A/O biological contact oxidation process can treat the high strength domestic wastewater effectively, and the total nitrogen removal efficiency of the process is relatively higher(>85%)when the internal reflux ratios are 0.75-1.00; the proposed model can simulate the operation of three-step-feeding A/O biological contact process appropriately; when the influent C/N ratio is 10, the simulated optimum flow rate distribution coefficients of the process are 0.5, 0.3 and 0.2. The proposed model can simulate the bio-chemical reactions occurring in treatment units of the process, and guide the design and the operation of the step-feeding A/O biological contact oxidation process.

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Last Update: 2021-09-30