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Optimal design method of AAO process reaction tank

An optimized design and reaction pool technology, applied in chemical instruments and methods, aerobic and anaerobic process treatment, calculation, etc., can solve the problems of lack of engineering data verification, results tend to be biased towards theory, and cannot meet engineering specifications, etc. Achieve the effect of reducing infrastructure investment, good economic benefits, and saving volume

Active Publication Date: 2011-07-27
中建中环新能源有限公司
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Problems solved by technology

However, there is no effective way to directly apply the ASM2d model to the AAO process design stage, and the defect of using the ASM2d model to directly carry out AAO process design is that there is a lack of a large amount of engineering data for verification, and the results tend to be theoretical and cannot meet the requirements of engineering specifications. Require

Method used

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  • Optimal design method of AAO process reaction tank
  • Optimal design method of AAO process reaction tank
  • Optimal design method of AAO process reaction tank

Examples

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Effect test

Embodiment 1

[0036] To treat water Q = 30000m 3 / d AAO process design for urban sewage treatment as an example, such as figure 1 As shown in the flow chart, use the GPS-X simulation software to design the volume of the biological reaction pool. The design requirements meet the first-class B standard in GB18918-2002 for COD Cr , TN and SS and other three main parameters of the control requirements (design water temperature 20 ℃): COD Cr <60mg / L, TN<20mg / L, SS<20mg / L.

[0037] Step 1, measure the water quality parameters of the influent, and calculate the main parameters of the AAO process according to the empirical formula and empirical parameters:

[0038] 1. Determination of water quality parameters of influent

[0039] According to the national standard method, the water quality parameters of the influent water are: COD Cr 440mg / L, soluble COD Cr 154mg / L, BOD 5 208mg / L, soluble BOD 566mg / L, TSS 217mg / L, VSS 130mg / L, TKN 40mg / L, soluble TKN 32mg / L, TN 40mg / L, NH 3 -N is 28.8mg / L,...

Embodiment 2

[0070] To treat water Q = 30000m 3 / d AAO process design for urban sewage treatment as an example, such as figure 1 As shown in the flow chart, use the WEST simulation software to design the volume of the biological reaction tank. The design requirements meet the first-class B standard in GB18918-2002 for COD Cr , TN and SS and other three main parameters of the control requirements (design water temperature 20 ℃): COD Cr <60mg / L, TN<20mg / L, SS<20mg / L.

[0071] Step 1, measure the water quality parameters of the influent, and calculate the main parameters of the AAO process according to the empirical formula and empirical parameters:

[0072] 1. Determination of water quality parameters of influent

[0073] According to the national standard method, the water quality parameters of the influent water are: COD Cr 440mg / L, soluble COD Cr 154mg / L, BOD 5 208mg / L, soluble BOD 5 66mg / L, TSS 217mg / L, VSS 130mg / L, TKN 40mg / L, soluble TKN 32mg / L, TN 40mg / L, NH 3 -N is 28.8mg / L,...

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Abstract

The invention provides an optimal design method of an AAO process reaction tank, which is characterized by comprising the following steps: measuring inflow quality parameters and calculating model parameters according to experimental formulas and experimental parameters; then building an AAO process model by utilizing simulation software containing an ASM2d model; limiting the range of the volumeof the reaction tank in the model according to the experimental formula of the hydraulic retention time (HRT), simulating the stable running of an AAO process by the simulation software, and confirming the minimum volume of the reaction tank under the condition of a stable state, thereby realizing the volume optimization of the AAO process reaction tank. The method combines the advantages of an experimental design method and a math simulation technology, and the parametric boundary condition in the ASM2d model is adjusted according to the experimental design method, therefore, defects of a pure experimental design method can be overcome, and the defects that the result obtained when the ASM2d model directly applied to a sewage treatment process is inclined to theorization and the requirement for engineering specifications is not met can be avoided.

Description

technical field [0001] The invention relates to a design method of a reaction pool in a sewage treatment process, in particular to an optimal design method of an AAO process reaction pool. Background technique [0002] The reaction tank of AAO process and its improved process has anaerobic, anoxic and aerobic environments, and can realize simultaneous biological nitrogen and phosphorus removal. It is a widely used sewage biological treatment process and has become one of the key technologies for urban sewage treatment. one. In the AAO process, the volume of the reaction tank is one of the key design parameters that affect the investment in infrastructure and the effect of sewage treatment. At present, the design of sewage biological treatment process (including AAO process) mainly adopts empirical design methods such as sludge load method and sludge age method, combined with the empirical parameter ranges in relevant design manuals and design specifications. The parameters...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14G06F17/50C02F3/30
CPCY02A20/152
Inventor 孙石磊沈良富陈飞
Owner 中建中环新能源有限公司
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