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A simplified activated sludge model (SASM) was proposed, which based on the activated sludge model No.1 (ASM1). This model describes the carbon oxidation process, nitration process and denitration process. The amount of components and processes of the SASM is fewer than that of the ASM1, so the practicability of the SASM is enhanced. Using the SASM to simulate the DMBR by Biowin, the results showed...
In photochemical reactor, the process conditions of formaldehyde wastewater treatment using UV-Fenton oxidation under the joint action of hydrogen peroxide, ferrous ions, and ultraviolet were studied, and the kinetic curves of formaldehyde degradation in different conditions were obtained. The results showed that: when the original wastewater concentration is 30mg/L, operating temperature is 23 °C,...
The bio-hydrogen producing process has complex interactions; thus, constructing a detailed mechanistic model and proper control architecture is difficult. Artificial neural networks (ANNs) are capable of inferring the complex relationships between input and output process variables without a detailed characterization of the mechanisms governing the process. This work presented a novel ANN that accurately...
A multi-population biofilm model for completely autotrophic nitrogen removal was developed and implemented in the simulation software AQUASIM to investigate the stratification and total nitrogen removal characteristics in a membrane-aerated biofilm reactor, which realized the counter-diffusion of the oxygen and substrates. The model considered four microorganisms including AeAOB, AeNOB, AnAOB and...
Transpiring wall reactor is a promising engineering solution to corrosion and salt precipitation for the technology of supercritical water oxidation. Characteristics of flow conditions and species concentrations in the reactor and around the transpiring wall are hardly accessible to measurements. So a computational fluid dynamic model of the transpiring wall reactor was developed. The influence of...
The present work deals with the study of uptake behaviour of Cd(II), Pb(II), Hg(II) and Zn(II) ions by chemically synthesized poly(p-Bromoanaline) PPBrAN using batch equilibration technique with both single and binary mixtures. The PPBrAN were chemically synthesized in different HCl concentrations. The effect of the various parameters such as synthesis method, physical oxidation state of the polymer,...
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