An optimized simulation method for sewage treatment with ethanol as an additional carbon source

Abstract

The invention discloses a sewage treatment optimization simulation method using ethanol as an additional carbon source, belonging to the technical field of waste water biological treatment, including: S1, writing the increased kinetic expression into the simulation software containing the ASM2d model, combined with the ASM2d Model building ASM2g model; S2, using the process component units in the ASM2g model library to construct a sewage treatment process; S3, converting the influent water quality concentration into the component concentration of the ASM2g model, and conducting a preliminary steady-state simulation of the sewage treatment process; S4 , according to the results of the preliminary steady-state simulation and the sensitivity analysis, calibrate the kinetic parameters and chemometric parameters of the ASM2g model to realize the steady-state simulation; S5, use the steady-state simulation results as the initial input value of the dynamic simulation, and perform dynamic Dynamic simulation analysis of water quality. The method is suitable for the simulation and optimization operation of the nitrogen and phosphorus removal effects of the sewage treatment system with ethanol substances in the sewage treatment system.

Description

technical field [0001] The invention relates to the technical field of wastewater biological treatment, in particular to an optimization simulation method for wastewater treatment using ethanol as an additional carbon source. Background technique [0002] With the development of industry and agriculture, in order to protect the environment, sewage treatment is widely used in construction, agriculture, transportation, energy, petrochemical, environmental protection, urban landscape, medical treatment, catering and other fields. At present, the activated sludge ASM2d model introduced by the International Water Association (IWA) is generally used in the sewage treatment process. Compared with other models, this model is more accurate in simulating the dynamics of nitrate and phosphorus and phosphorus salts. It is widely used in sewage treatment systems with nitrogen and phosphorus removal functions. Based on the ASM2d model and with the help of computer technology, the optimal...

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Problems solved by technology

[0003] However, the ASM2d model is more complex, and the amount of calculation is large during operation

In order to reduce the complexity of the model, some simplification methods are introduced to the ASM2d model. These simplification methods directly lead to some defects in the ASM2d model during operation. For example, when the simulation system runs under certain conditions, the ASM2d model does not adapt to

[0004] In addition, there is an important flaw in the ASM2d model: the ASM2d model is not suitable for sewage treatment systems that add ethanol as an additional carbon source

[0005] Therefore, the applicability of the ASM2d model in the actual sewage treatment process of adding ethanol is not strong, and it does not meet the characteristics of the sewage treatment industry

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