Method for connecting activated sludge model ASM and anaerobic digestion model ADM

Abstract

The invention discloses a method for connecting an ASM (Activated Sludge Model) and an ADM (Anaerobic Digestion Model), relates to the field of sewage treatment, and constructs a series of interface methods to realize mutual conversion of ASM series models and ADM models in component, and constructs interfaces of model component conversion based on element conservation and material balance in combination with element analysis of model components. And realizing smooth coupling of ASM series models including ASM 1, ASM 2, ASM 2d, ASM 3 and ADM model combination process simulation. According to the method, the simulation problem caused by component definition difference is solved, efficient coupling between models is realized, and the accuracy and flexibility of whole-plant comprehensive simulation are remarkably improved. Compared with a traditional super model method, the interface method has the advantages that the complexity and computing resource consumption of the models are reduced while the independence of all the models is reserved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a method for connecting an activated sludge model ASM and an anaerobic digestion model ADM. Background Art

[0002] With the rapid development of information technology, the digitalization and intelligent transformation of the wastewater treatment field has become an inevitable trend. In this context, mathematical models, as important tools, provide a scientific basis for process optimization and prediction. Among them, the activated sludge model (ASM) and the anaerobic digestion model (ADM) are two mechanism models widely used in the field of wastewater treatment. The ASM was proposed by the International Water Association (IWA) and aims to simulate the biological treatment process of the activated sludge process. The core is to degrade pollutants in water bodies by simulating the growth and death of microorganisms. The ADM model simulates and describes the biological reactions in the anaerobic digestion process. Its theoretical basis is the anaerobic four-stage theory: hydrolysis, acidification, hydrogen and acetic acid production, and methane production.

[0003] Driven by the digitalization and intelligence of sewage treatment plants, the importance of overall full-process modeling has become increasingly prominent. The core of comprehensive modeling is to model and simulate multiple process units of the sewage treatment plant (such as activated sludge treatment, anaerobic digestion, sedimentation tanks, etc.) as a whole, so as to more comprehensively analyze system performance, optimize resource allocation, and improve overall operating efficiency. In a sewage treatment plant, the activated sludge treatment system and the anaerobic digestion system are two key process units. They do not operate independently, but are closely related through sludge return and other means. For example, the residual sludge produced by the activated sludge system is the main input of anaerobic digestion, and the digestate produced by anaerobic digestion may be returned to the activated sludge system. Therefore, in order to more accurately simulate the material flow and energy flow of the entire sewage treatment plant, it is necessary to connect ASM and ADM. This is one of the key challenges and difficulties in constructing the entire plant.

[0004] The components of the ASM model and the ADM model are both divided into particle state (X) and dissolved state (S) in terms of morphology, but there are significant differences between the two in terms of simulation process and objectives. H ), polyphosphate bacteria (X PAO ) and nitrifying bacteria (X AUT The ADM model describes the growth and decay of organic matter, simulating the transformation of organic matter, nitrogen, and phosphorus in wastewater. The ADM model, on the other hand, provides a detailed description of the anaerobic digestion process of particulate organic matter, including decomposition, hydrolysis, acid production, and methanogenesis. These differences lead to different systems for classifying component properties, resulting in overlaps and omissions in component definitions. To address these issues, it is necessary to establish an interface between the two models to achieve interoperability.

[0005] In addition, the ASM model has developed four versions since its inception. ASM1 focuses on the removal of carbon and nitrogen, ASM2 adds phosphorus removal on this basis, ASM2d optimizes ASM2 and adds the denitrification process of polyphosphate-accumulating bacteria (PAOs), and ASM3 emphasizes the dynamic changes of microbial communities. At present, there is a lack of systematic sorting out of the correspondence between the components of the ASM series models and the ADM model, and there is also a lack of a series of interfaces that can realize their two-way conversion. This gap limits the further development and application of the overall modeling of sewage treatment plants. Therefore, technical personnel in this field are committed to developing an interface method to realize the mutual conversion of the ASM series models and the ADM model in components, and to achieve smooth coupling of the ASM series models (including ASM1, 2, 2d and 3) with the ADM model in the combined process simulation. Summary of the Invention

[0006] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is the lack of a series of interfaces capable of realizing bidirectional conversion.

[0007] To achieve the above objectives, the present invention provides a method for connecting an activated sludge model ASM with an anaerobic digestion model ADM, which constructs an interface for model component conversion based on element conservation and material balance;

[0008] The interface between ASM1 and ADM is:

[0009] ASM1-ADM:

[0010] 1) Dissolved oxygen S in ASM1 O and nitrate S NO COD considered negative is deducted from the total COD;

[0011] 2) Soluble organic nitrogen in ASM1 is measured by S ND Indicates that there is no direct corresponding component in ADM1, but as an organic component amino acid S aa The nitrogen-containing part in the is present. Based on nitrogen conservation, the converted S aa This part of COD comes from the biodegradable matrix S in ASM1 s , at this time, if S s If there is any surplus, it is converted into monosaccharide S su If S s If it is insufficient, first put all S s All converted to S aa , the remaining S ND Waiting for subsequent conversion;

[0012] 3) Soluble inert organic matter in ASM1 is treated with S I Indicates that the corresponding component in ADM1 is S I, but S in ADM1 I Contains nitrogen, which can be obtained from S ND and S NH Conversion, if the nitrogen source is insufficient, that is, some S I If conversion is not possible, convert to S su ;

[0013] 4) Based on nitrogen conservation, the remaining particulate COD is maximized and mapped to X in ADM1 c If there is any COD left, it will be mapped to X according to the decomposition ratio in ADM1. ch and X li If there is excess nitrogen, it will be converted into inorganic nitrogen S in ; The remaining particulate COD is I and X P outside;

[0014] 5) The particulate inert organic matter in ASM1 includes X p and X I , which is converted to X in ADM1 I ;

[0015] 6) Convert the remaining nitrogen components into inorganic nitrogen S IN , where the nitrogen component is S ND 、X ND 、S NH .

[0016] ADM-ASM1:

[0017] 1) Particulate organic matter in ADM (excluding X I All except s , the nitrogen contained therein is converted into X ND ;

[0018] 2) Particle-like inert matter X in ADM I Directly converted to X in ASM1 I ;

[0019] 3) Soluble inert matter S in ADM I Directly converted to S in ASM1 I , the nitrogen contained is converted into S in ASM1 ND ;

[0020] 4) Soluble COD in ADM is converted into soluble organic matter S in ASM1 s , where amino acid S aa The nitrogen in the ND ;

[0021] 5) Inorganic nitrogen S in ADM1IN Directly converted to ammonia nitrogen S in ASM1 NH4 ;

[0022] Wherein, X represents the particle state and S represents the dissolved state.

[0023] The dissolved oxygen S in the ASM1 O and nitrate S NO COD that is considered negative is deducted from the total COD according to S S 、X S 、X ba 、X bh order.

[0024] The interface between ASM1 and ADM is:

[0025] ASM2-ADM:

[0026] 1) Similarly, before component conversion, deduct the S O and S NO3 The corresponding amount of COD;

[0027] 2) Soluble fermentable organic matter S in ASM2 F Converted to amino acid S in ADM aa , carbohydrates S su and fatty acid S fa , where S aa The amount of nitrogen is calculated based on the conservation of nitrogen, and the remaining S F According to the COD conservation law, it is converted into nitrogen-free S su ;

[0028] 3) Fermentation product S in ASM2 A Converted into acetic acid S in ADM in a certain ratio ac , S propionate pro , butyrate S bu and valerate S va ;

[0029] 4) Granular CDO includes X S 、X H 、X PAO 、X PHA and X AUT Combined conversion to mixture X in ADM c ;

[0030] 5) Dissolved and particulate inert organic matter S in ASM2 I and X I Directly communicate with S in ADM I and X I correspond;

[0031] 6) The remaining nitrogen-containing components ammonia nitrogen S NH4 Converted into inorganic nitrogen S IN .

[0032] ADM-ASM2:

[0033] 1) Amino acid S in ADM aa , carbohydrates S su and fatty acid S fa Combined conversion into fermentable organic matter S in ASM2 F ;

[0034] 2) Organic acids in ADM are converted into fermentation products S in ASM2 A ;

[0035] 3) The remaining particulate organic matter is combined and converted into slowly degradable matrix X S ; The remaining particulate organic matter is I outside;

[0036] 4) Dissolved and particulate inert organic matter S in ADM I and X I Directly with S in ASM2d I and X I correspond;

[0037] 5) Inorganic nitrogen S in ADM IN Converted into ammonia nitrogen S in ASM2 NH4 .

[0038] The dissolved oxygen S in the ASM2 O and nitrate S NO The COD that is considered negative is deducted from the total COD according to S F 、S A 、X S order.

[0039] The organic acid is acetic acid, propionic acid, butyric acid, and valeric acid.

[0040] ASM2d and ASM2 are identical in the division and definition of components, and the interface method for component conversion between ASM2d and ADM is the same as that of ASM2.

[0041] The interface between ASM3 and ADM is:

[0042] ASM3-ADM:

[0043] 1) Dissolved oxygen S in ASM3 O and nitrate S NO COD considered negative is deducted from the total COD;

[0044] 2) Based on nitrogen conservation, the biodegradable matrix S in ASM3 S Converted to amino acid S in ADM aa The remaining COD is converted into nitrogen-free S su ;

[0045] 3) Granular CDO includes X S 、X H 、X STO 、X A Combined conversion to mixture X in ADM c ;

[0046] 4) Inert organic matter S in the dissolved and particulate states in ASM3 I and X I Directly communicate with S in ADM I and X I correspond;

[0047] 5) Ammonia nitrogen S in ASM3 NH4 Converted into inorganic nitrogen S IN .

[0048] ADM-ASM3:

[0049] 1) Soluble COD in ADM is converted into soluble organic matter S in ASM3 S ;

[0050] 2) All the particulate organic matter in ADM is converted into X in ASM3 S ; The remaining particulate organic matter is I outside;

[0051] 3) Dissolved and particulate inert organic matter S in ADM I and X I Directly connect to S in ASM3 I and X I correspond;

[0052] 4) Inorganic nitrogen S in ADM IN Converted into ammonia nitrogen S NH4 .

[0053] Dissolved oxygen S in ASM3 O and nitrate S NO COD that is considered negative is deducted from the total COD according to S S 、X S 、X A 、X H order.

[0054] This invention offers significant technical advantages and broad application value in the field of comprehensive plant-wide modeling of sewage treatment plants. By constructing an interface between the ASM series models and the ADM model, this invention resolves simulation challenges caused by differences in component definitions, enabling efficient coupling between models and significantly improving the accuracy and flexibility of comprehensive plant-wide simulations. Compared to the traditional super-model approach, this interface approach reduces model complexity and computational resource consumption while preserving the independence of each model, making it more practical and applicable.

[0055] In terms of production implementation, the interface method of the present invention can be directly integrated into existing sewage treatment plant modeling software, eliminating the need for large-scale modifications to existing systems, reducing implementation difficulty and costs. In addition, the present invention supports the flexible combination of different versions of models, adapting to diverse process requirements and providing extensive support for the optimized operation of sewage treatment plants. From the perspective of market demand, with the acceleration of the digitalization and intelligent transformation of the sewage treatment industry, the demand for comprehensive plant-wide modeling technology is increasing, and the present invention has broad market application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 .Schematic diagram of the ASM1-ADM1 component conversion interface;

[0057] Figure 2 .Schematic diagram of the ADM1-ASM1 component conversion interface;

[0058] Figure 3 .Schematic diagram of the ASM2 / 2d-ADM1 component conversion interface;

[0059] Figure 4 .Schematic diagram of the ADM1-ASM2 / 2d component conversion interface;

[0060] Figure 5 .Schematic diagram of the ASM3-ADM1 component conversion interface;

[0061] Figure 6 .Schematic diagram of the ADM1-ASM3 component conversion interface. DETAILED DESCRIPTION

[0062] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings to make its technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the scope of protection of the present invention is not limited to the embodiments mentioned herein.

[0063] In the drawings, components with identical structures are denoted by the same reference numerals, and components with similar structures or functions are denoted by similar reference numerals. The size and thickness of each component shown in the drawings are arbitrary and are not limited by the present invention. For clarity, the thickness of components in some places in the drawings is appropriately exaggerated.

[0064] The technical problem to be solved by the present invention is an interface method for component conversion between an ASM series model and an ADM model when performing full-process simulation of a sewage treatment plant.

[0065] The problem of the present invention can be solved by the following technical solutions:

[0066] The core of interface construction is to ensure the mass balance before and after component transformation, with an emphasis on the conservation of COD and N elements.

[0067] ASM1-ADM:

[0068] 1) Dissolved oxygen S in ASM1 O and nitrate S NO COD considered as negative is deducted from the total COD (according to S S 、X S 、X ba 、X bh order);

[0069] 2) Soluble organic nitrogen in ASM1 is measured by S ND Indicates that there is no direct corresponding component in ADM1, but as an organic component amino acid S aa The nitrogen-containing part in the is present. Based on nitrogen conservation, the converted S aa This part of COD comes from the biodegradable matrix S in ASM1 s , at this time, if S s If there is any surplus, it is converted into monosaccharide S su If S s If it is insufficient, first put all S s All converted to S aa , the remaining S ND Waiting for subsequent conversion.

[0070] 3) Soluble inert organic matter in ASM1 is treated with S I Indicates that the corresponding component in ADM1 is S I , but S in ADM1 I Contains nitrogen, which can be obtained from S ND and S NH Conversion, if the nitrogen source is insufficient, that is, some S I If conversion is not possible, convert to S su .

[0071] 4) Based on nitrogen conservation, the remaining particulate COD (excluding X I and X P Maximize the X mapped to ADM1 c If there is any COD left, it will be mapped to X according to the decomposition ratio in ADM1. ch and X li middle;

[0072] If there is excess nitrogen, it will be converted into inorganic nitrogen S IN .

[0073] 5) The particulate inert organic matter in ASM1 includes X p and X I , which is converted to X in ADM1 I .

[0074] 6) The remaining nitrogen component (S ND 、X ND 、S NH ) is converted into inorganic nitrogen S IN .

[0075] ADM-ASM1:

[0076] 1) Particulate organic matter in ADM (excluding X I All except s , the nitrogen contained therein is converted into X ND .

[0077] 2) Particle-like inert matter X in ADM I Directly converted to X in ASM1 I .

[0078] 3) Soluble inert matter S in ADM I Directly converted to S in ASM1 I , the nitrogen contained is converted into S in ASM1 ND .

[0079] 4) Soluble COD in ADM is converted into soluble organic matter S in ASM1 s , where amino acid S aa The nitrogen in the ND .

[0080] 5) Inorganic nitrogen S in ADM1 IN Directly converted to ammonia nitrogen S in ASM1 NH .

[0081] ASM2-ADM:

[0082] 1) Similarly, before component conversion, deduct the S O and S NO3 The corresponding amount of COD (according to S F 、S A 、X S order).

[0083] 2) Soluble fermentable organic matter S in ASM2 F Converted to amino acid S in ADM aa , carbohydrates S su and fatty acid S fa , where S aa The amount of nitrogen is calculated based on the conservation of nitrogen, and the remaining S F According to the COD conservation law, it is converted into nitrogen-free S su .

[0084] 3) Fermentation product S in ASM2 A Converted into acetic acid S in ADM in a certain ratio ac , S propionate pro , butyrate S bu and valerate S va .

[0085] 4) Granular CDO includes X S 、X H 、X PAO 、X PHA and X AUT Combined conversion to mixture X in ADM c .

[0086] 5) Dissolved and particulate inert organic matter S in ASM2 I and X I Directly communicate with S in ADM I and X I correspond.

[0087] 6) The remaining nitrogen-containing components ammonia nitrogen S NH4 Converted into inorganic nitrogen S IN .

[0088] ADM-ASM2:

[0089] 1) Amino acid S in ADM aa , carbohydrates S su and fatty acid S fa Combined conversion into fermentable organic matter S in ASM2 F .

[0090] 2) The organic acids (acetic acid, propionic acid, butyric acid, and valeric acid) in ADM are combined and converted into fermentation product S in ASM2 A .

[0091] 3) The remaining particulate organic matter (except XI) is combined and converted into slowly degradable matrix X S .

[0092] 4) Dissolved and particulate inert organic matter S in ADM I and X I Directly with S in ASM2d I and X I correspond.

[0093] 5) Inorganic nitrogen Sin in ADM is converted into ammonia nitrogen S in ASM2 NH4 .

[0094] ASM2d and ASM2 are identical in the division and definition of components, so the method for converting components between ASM2d and ADM is the same as that for ASM2.

[0095] ASM3-ADM:

[0096] 1) Dissolved oxygen S in ASM3 O and nitrate S NO COD considered as negative is deducted from the total COD (according to S S 、X S 、X A 、X H order);

[0097] 2) Based on nitrogen conservation, the biodegradable matrix S in ASM3 S Converted to amino acid S in ADM aa The remaining COD is converted into nitrogen-free S su .

[0098] 3) Granular CDO includes X S 、X H 、X STO 、X A Combined conversion to mixture X in ADM c .

[0099] 4) Inert organic matter S in the dissolved and particulate states in ASM3 I and X I Directly communicate with S in ADM I and X I correspond.

[0100] 5) Ammonia nitrogen S in ASM3 NH4 Converted into inorganic nitrogen S IN .

[0101] ADM-ASM3:

[0102] 1) Soluble COD in ADM is converted into soluble organic matter S in ASM3 S .

[0103] 2) Particulate organic matter in ADM (except X I All except for S .

[0104] 3) Dissolved and particulate inert organic matter S in ADM I and X I Directly with S in ASM3 I and X I correspond.

[0105] 4) Inorganic nitrogen S in ADM IN Converted into ammonia nitrogen S NH4 .

[0106] The present invention is described in detail below with reference to specific embodiments.

[0107] 1.ASM1-ADM:

[0108] Assume that the concentrations of each component in the ASM1 model are:

[0109] Components Numerical unit Components Numerical unit <![CDATA[S I ]]> 30 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X I ]]> 120 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S S ]]> 15 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X S ]]> 100 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S O ]]> 0.2 <![CDATA[g(O2) / m 3 ]]> <![CDATA[X B,H ]]> 60 <![CDATA[g(COD) / m 3 <!-- 5 -->]]> <![CDATA[S NO ]]> 4 <![CDATA[g(N) / m 3 ]]> <![CDATA[X B,A ]]> 30 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S NH ]]> 8 <![CDATA[g(N) / m 3 ]]> <![CDATA[X P ]]> 10 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S ND ]]> 0.85 <![CDATA[g(N) / m 3 ]]> <![CDATA[X ND ]]> 8 <![CDATA[g(N) / m 3 ]]> <![CDATA[S ALK ]]> 5.4 <![CDATA[mol(HCO3 - ) / m 3 ]]>

[0110] Since the concentration unit of the components in ADM is kg(COD) / m 3 ;kg(N) / m 3 Etc., so when converting, you should also pay attention to the conversion of units.

[0111] The component conversion process and results are:

[0112]

[0113]

[0114] 2.ADM-ASM1:

[0115] Assume that the concentrations of each component in ADM are:

[0116] Components Numerical unit Components Numerical unit <![CDATA[X c ]]> 0.2 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S ac ]]> 0.09 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X ch ]]> 0.02 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S h2 ]]> 0 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X pr ]]> 0.09 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S CH4 ]]> 0 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X li ]]> 0.04 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S IC ]]> 0.09 <![CDATA[kmol / m 3 ]]> <![CDATA[X I ]]> 17.2 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S IN ]]> 0.09 <![CDATA[kmol / m 3 ]]> <![CDATA[S I ]]> 0.1 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X su ]]> 0.31 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S su ]]> 0.012 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X aa ]]> 0.95 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S aa ]]> 0.006 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X fa ]]> 0.34 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S fa ]]> 0.1 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X c4 ]]> 0.33 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S va ]]> 0.012 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X pro ]]> 0.1 <![CDATA[kg(COD) / m 3 <!-- 6 -->]]> <![CDATA[S bu ]]> 0.014 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X ac ]]> 0.68 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S pro ]]> 0.018 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X h2 ]]> 0.29 <![CDATA[kg(COD) / m 3 ]]>

[0117] Since the concentration unit of the components in ASM is g(COD) / m 3 ; g(N) / m 3 Etc., so when converting, you should also pay attention to the conversion of units.

[0118] The component conversion process and results are:

[0119]

[0120]

[0121] 3.ASM2 / 2d-ADM:

[0122] Assume that the concentrations of each component in the ASM2 model are:

[0123] Components Numerical unit Components Numerical unit <![CDATA[S O ]]> 0.4 <![CDATA[g(O2) / m 3 ]]> <![CDATA[X I ]]> 50 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S F ]]> 30 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X S ]]> 85 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S A ]]> 15 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X H ]]> 60 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S NH4 ]]> 20 <![CDATA[g(N) / m 3 ]]> <![CDATA[X PAO ]]> 0.5 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S NO3 ]]> 0.6 <![CDATA[g(N) / m 3 ]]> <![CDATA[X PP ]]> 0.3 <![CDATA[g(P) / m 3 ]]> <![CDATA[S PO4 ]]> 10 <![CDATA[g(P) / m 3 ]]> <![CDATA[X PHA ]]> 0.6 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S I ]]> 60 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X AUT ]]> 0.6 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S ALK ]]> 5 <![CDATA[mol(HCO3 - ) / m 3 ]]> <![CDATA[X MeOH ]]> 0 <![CDATA[g(Fe(OH)3) / m 3 ]]> <![CDATA[S N2 ]]> 15 <![CDATA[g(N) / m 3 ]]> <![CDATA[X FeP ]]> 0 <![CDATA[g(FePO4) / m 3 ]]> <![CDATA[X TSS ]]> 197 <![CDATA[g(TSS) / m 3 ]]>

[0124] Since the concentration unit of the components in ADM is kg(COD) / m 3 ;kg(N) / m 3 Etc., so when converting, you should also pay attention to the conversion of units.

[0125] The component conversion process and results are:

[0126]

[0127] 4.ADM-ASM2 / 2d

[0128] Assume that the concentrations of each component in ADM are:

[0129]

[0130]

[0131] Since the concentration unit of the components in ASM is g(COD) / m 3 ; g(N) / m 3 Etc., so when converting, you should also pay attention to the conversion of units.

[0132] The component conversion process and results are:

[0133]

[0134] 5.ASM3-ADM

[0135] Components Numerical unit Components Numerical unit <![CDATA[S O ]]> 0.4 <![CDATA[g(O2) / m 3 ]]> <![CDATA[X I ]]> 25 <![CDATA[g(COD) / m 3 <!-- 8 -->]]> <![CDATA[S I ]]> 30 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X S ]]> 115 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S S ]]> 60 <![CDATA[g(COD) / m 3 ]]> <![CDATA[X H ]]> 30 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S NH4 ]]> 16 <![CDATA[g(N) / m 3 ]]> <![CDATA[X STO ]]> 0 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S N2 ]]> 0 <![CDATA[g(N) / m 3 ]]> <![CDATA[X A ]]> 0 <![CDATA[g(COD) / m 3 ]]> <![CDATA[S NOx ]]> 0.6 <![CDATA[g(N) / m 3 ]]> <![CDATA[X SS ]]> 125 <![CDATA[g(TSS) / m 3 ]]> <![CDATA[S ALK ]]> 5 <![CDATA[mol(HCO3 - ) / m 3 ]]>

[0136] Since the concentration unit of the components in ADM is kg(COD) / m 3 ;kg(N) / m 3 Etc., so when converting, you should also pay attention to the conversion of units.

[0137] The component conversion process and results are:

[0138]

[0139]

[0140] 6.ADM-ASM3

[0141] Assume that the concentrations of each component in ADM are:

[0142] Components Numerical unit Components Numerical unit <![CDATA[X c ]]> 0.2 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S ac ]]> 0.09 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X ch ]]> 0.02 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S h2 ]]> 0 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X pr ]]> 0.09 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S CH4 ]]> 0 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X li ]]> 0.04 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S IC ]]> 0.09 <![CDATA[kmol / m 3 ]]> <![CDATA[X I ]]> 17.2 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S IN ]]> 0.09 <![CDATA[kmol / m 3 ]]> <![CDATA[S I ]]> 0.1 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X su ]]> 0.31 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S su ]]> 0.012 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X aa ]]> 0.95 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S aa ]]> 0.006 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X fa ]]> 0.34 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S fa ]]> 0.1 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X c4 ]]> 0.33 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S va ]]> 0.012 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X pro ]]> 0.1 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S bu ]]> 0.014 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X ac ]]> 0.68 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[S pro ]]> 0.018 <![CDATA[kg(COD) / m 3 ]]> <![CDATA[X h2 ]]> 0.29 <![CDATA[kg(COD) / m 3 ]]>

[0143] Since the concentration unit of the components in ASM is g(COD) / m 3 ; g(N) / m 3 Etc., so when converting, you should also pay attention to the conversion of units.

[0144] The component conversion process and results are:

[0145]

[0146] The preferred embodiments of the present invention have been described in detail above. It should be understood that numerous modifications and variations based on the concepts of the present invention are possible without inventive effort by those skilled in the art. Therefore, any technical solution that can be derived by one skilled in the art through logical analysis, reasoning, or limited experimentation based on the concepts of the present invention and the prior art should be within the scope of protection defined by the claims.

Claims

1. A method for connecting an activated sludge model ASM and an anaerobic digestion model ADM, characterized in that: Based on element conservation and material balance, an interface for model component transformation is constructed; the interface between ASM1 and ADM is: ASM1-ADM: 1) Dissolved oxygen S in ASM1 O and nitrate S NO COD considered negative is deducted from the total COD; 2) Soluble organic nitrogen in ASM1 is measured by S ND Indicates that there is no direct corresponding component in ADM1, but as an organic component amino acid S aa The nitrogen-containing part of Based on nitrogen conservation, the converted S aa This part of COD comes from the biodegradable matrix S in ASM1 s , at this time, if S s If there is any surplus, it is converted into monosaccharide S su If S s If it is insufficient, first put all S s All converted to S aa , the remaining S ND Waiting for subsequent conversion; 3) Soluble inert organic matter in ASM1 is treated with S I Indicates that the corresponding component in ADM1 is S I , but S in ADM1 I Contains nitrogen, which is composed of S ND and S NH Conversion, if the nitrogen source is insufficient, that is, some S I If conversion is not possible, convert to S su ; 4) Based on nitrogen conservation, the remaining particulate COD is maximized and mapped to X in ADM1 c If there is any COD left, it will be mapped to X according to the decomposition ratio in ADM1. ch and X li If there is excess nitrogen, it will be converted into inorganic nitrogen S IN ; The remaining particulate COD is I and X P outside; 5) The particulate inert organic matter in ASM1 includes X p and X I , which is converted to X in ADM1 I ; 6) Convert the remaining nitrogen components into inorganic nitrogen S IN ; ADM-ASM1: 1) Particulate organic matter in ADM (excluding X I All except s , the nitrogen contained therein is converted into X ND ; 2) Particle-like inert matter X in ADM I Directly converted to X in ASM1 I ; 3) Soluble inert matter S in ADM I Directly converted to S in ASM1 I , the nitrogen contained is converted into S in ASM1 ND ; 4) Soluble COD in ADM is converted into soluble organic matter S in ASM1 s , where amino acid S aa The nitrogen in the ND ; 5) Inorganic nitrogen S in ADM1 IN Directly converted to ammonia nitrogen S in ASM1 NH ; Wherein, X represents the particle state and S represents the dissolved state.

2. The method according to claim 1, wherein The nitrogen component is S ND 、X ND 、S NH .

3. The method according to claim 1, wherein The dissolved oxygen S in the ASM1 O and nitrate S NO COD that is considered negative is deducted from the total COD according to S S 、X S 、X ba 、X bh order.

4. The method according to claim 1, wherein The interface between ASM2 and ADM is: ASM2-ADM: 1) Before component conversion, deduct the S from the internal components of ASM2 O and S NO3 The corresponding amount of COD; 2) Soluble fermentable organic matter S in ASM2 F Converted to amino acid S in ADM aa , carbohydrates S su and fatty acid S fa , where S aa The amount of nitrogen is calculated based on the conservation of nitrogen, and the remaining S F According to the COD conservation law, it is converted into nitrogen-free S su ; 3) Fermentation product S in ASM2 A Converted into acetic acid S in ADM in a certain ratio ac , S propionate pro , butyrate S bu and valerate S va ; 4) Granular CDO includes X S 、X H 、X PAO 、X PHA and X AUT Combined conversion to mixture X in ADM c ; 5) Dissolved and particulate inert organic matter S in ASM2 I and X I Directly communicate with S in ADM I and X I correspond; 6) The remaining nitrogen-containing components ammonia nitrogen S NH4 Converted into inorganic nitrogen S IN ; ADM-ASM2: 1) Amino acid S in ADM aa , carbohydrates S su and fatty acid S fa Combined conversion into fermentable organic matter S in ASM2 F ; 2) Organic acids in ADM are converted into fermentation products S in ASM2 A ; 3) The remaining particulate organic matter is combined and converted into slowly degradable matrix X S ; The remaining particulate organic matter is I outside; 4) Dissolved and particulate inert organic matter S in ADM I and X I Directly with S in ASM2d I and X I correspond; 5) Inorganic nitrogen S in ADM IN Converted into ammonia nitrogen S in ASM2 NH4 .

5. The method according to claim 4, wherein The dissolved oxygen S in the ASM2 O and nitrate S NO The COD that is considered negative is deducted from the total COD according to S F 、S A 、X S order.

6. The method according to claim 4, wherein The organic acid is acetic acid, propionic acid, butyric acid, and valeric acid.

7. The method according to claim 1, wherein ASM2d and ASM2 are identical in the division and definition of components, and the interface method for component conversion between ASM2d and ADM is the same as that of ASM2.

8. The method according to claim 1, wherein The interface between ASM3 and ADM is: ASM3-ADM: 1) Dissolved oxygen S in ASM3 O and nitrate S NO COD considered negative is deducted from the total COD; 2) Based on nitrogen conservation, the biodegradable matrix S in ASM3 S Converted to amino acid S in ADM aa The remaining COD is converted into nitrogen-free S su ; 3) Granular CDO is combined and converted into mixture X in ADM c ; 4) Inert organic matter S in the dissolved and particulate states in ASM3 I and X I Directly communicate with S in ADM I and X I correspond; 5) Ammonia nitrogen S in ASM3 NH4 Converted into inorganic nitrogen S IN ; ADM-ASM3: 1) Soluble COD in ADM is converted into soluble organic matter S in ASM3 S ; 2) All the particulate organic matter in ADM is converted into X in ASM3 S ; The remaining particulate organic matter is I outside; 3) Dissolved and particulate inert organic matter S in ADM I and X I Directly connect to S in ASM3 I and X I correspond; 4) Inorganic nitrogen S in ADM IN Converted into ammonia nitrogen S NH4 .

9. The method according to claim 8, wherein The granular CDO includes X S 、X H 、X STO 、X A .

10. The method according to claim 8, wherein Dissolved oxygen S in ASM3 O and nitrate S NO COD that is considered negative is deducted from the total COD according to S S 、X S 、X A 、X H order.

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