CN103440431B - A kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration - Google Patents

A kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration Download PDF

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CN103440431B
CN103440431B CN201310418321.9A CN201310418321A CN103440431B CN 103440431 B CN103440431 B CN 103440431B CN 201310418321 A CN201310418321 A CN 201310418321A CN 103440431 B CN103440431 B CN 103440431B
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concentration
uncoupling
analysis
surface design
observed growth
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CN103440431A (en
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郭婉茜
冯骁驰
任南琪
杨珊珊
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Harbin Institute of Technology
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Abstract

A kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration, the present invention relates to a kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration. The present invention is to solve the problem that existing uncoupling agents reduces sludge yield technical deficiency. (1) determine that single uncoupling agents reduces the valid density of sludge yield; (2) observed growth yield under every kind of scheme is determined; (3) observed growth yield in step (2) is arranged and Fitting Analysis; (4) secondary multiple regression equation and regression coefficient are carried out variance analysis and significance analysis; (5) according to the relation of independent variable X and response value Y in the three-dimensional response surface design of secondary multivariate regression models generation and two dimension contour map analytical model; (6) matlab software is adopted to solve secondary multivariate regression models. The present invention is applied to municipal works and field of environment engineering.

Description

A kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration
Technical field
The present invention relates to a kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration, particularly relate to response surface design and determine the optium concentration of every kind of uncoupling agent in compound uncoupling agent, make the mud decrement effect of compound uncoupling agent reach the best way.
Background technology
Active matter sludge is the biological wastewater treatment technology based on activated sludge, is widely used in Treating Municipal Sewage and industrial wastewater in the whole world. But a large amount of excess sludges that activated sludge process produces become the major obstacle hindering the application of activated sludge process further genralrlization. Since Eleventh Five-Year Plan, the sewage disposal industry of China obtains and develops rapidly, and between 30 years, sewage treatment plant rises to more than 2800 seats from 37, and sewage treatment capacity increases to 128,670,000 ton per days from 640,000 ton per days. National urban wastewater treatment rate has reached 73%. But it is accompanied by the quick raising of sewage treatment capacity and handling rate, also brings increasing sharply of sludge yield. According to statistics, within 2006, municipal sewage plant of China produces mud (moisture content 80%) up to 11,000,000 tons, is the 8% of the house refuse amount of clearing. And the sewage load by the end of all cities in 2010 is 343 billion cubic meters, and excess sludge annual production will be up to 22,000,000 tons (moisture content 80%). Excess sludge volume typically constitutes from processing about the 1-2% of wastewater volume. Process the municipal sewage plant of 100,000 tons of sewage for a day, as every day is properly functioning, then will produce sludge dry solids 10-20 ton every day, amount to into the mud of moisture 80%, be up to 50-100 ton. Along with increasing substantially of China's national life quality, water consumption is also being greatly increased, the growth of municipal wastewater amount and the increase of sewage disposal ratio, cause that the yield of mud will be doubled and redoubled, it is contemplated that to 2015 the end of the year China's sludge yield will more than 26,000,000 tons (moisture content 80%).
At present, the main method of mud decrement is sludge disposal technology after excess sludge process Subtraction method and mud generation, and process decrement is considered as more economical effective sludge reduction method, it is possible to reduce sludge yield in the process that mud produces.The method wherein adopting uncoupler can effectively reduce excess sludge production and need not improve on a large scale for existing sewage treatment plant. According to Mitchell and the Moyle bioelectrochemical theory proposed in 1961, the proton gradient inside and outside cell membrane drives the generation of oxidative phosphorylation process. Repiration biological under normal circumstances and oxidative phosphorylation are closely coupled together, the ATP that oxidative phosphorylation produces is relevant to Repiration, but when some specific molecules exist, this close coupling is broken, and this quasi-molecule is referred to as metabolic uncoupler. When uncoupling agents exists, the energy that oxidation of organic compounds produces will not be completely converted into the form of ATP, uncoupling agents and the H outside microorganism mitochondrial inner membrane+Combine, together enter inner membrance, be separated into uncoupling agents and H+Electric potential difference inside and outside mitochondrial membrane is thus being affected, it is possible to reach to suppress the purpose of ATP synthesis so that the Oxidation of substrate is normally carried out by microorganism, in sewage, organic matter removal efficiency is not affected and phosphorylation is subject to effective suppression, and the energy part that oxidation substrates produces is due to H+Do inefficient cycle and overflow scattered with the form of heat, the tight coupling between disruptive oxidation and phosphorylation. Thus it is less to produce the ATP for Cytoplasm synthesis, reach to reduce the purpose of excess sludge production. It has now been found that single uncoupling agents is for the limited use of mud decrement, it is impossible to obtain desirable mud decrement effect. And two or more uncoupling agents of compound can obtain better mud decrement effect, but currently without determining the effective ways of each uncoupling agents optium concentration in compound uncoupling agent.
Summary of the invention
The present invention is to solve that existing uncoupling agents reduces the problem of sludge yield technical deficiency, and provide a kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration.
(1) uncoupling agents is chosen, and according to observed growth yield Y under variable concentrations of the single uncoupling agents of technique study of experiment of single factorobs, it is determined that single uncoupling agents reduces the valid density of sludge yield;
(2) with observed growth yield YobsFor response value Y, the concentration of uncoupling agents is independent variable X, formulates experimental program according to center compounding design method, it is determined that the observed growth yield under every kind of scheme;
(3) observed growth yield in step (2) is arranged and Fitting Analysis, obtain secondary multivariate regression models Y obs = b 0 + Σ i = 1 k b i X i + Σ i = 1 j - 1 Σ j = 1 k b ij X i X j + Σ i = 1 k b ii X i 2 , wherein observed growth yield YobsIt is in response to value, b0It is constant term, bi, bij, biiIt is regression coefficient, the concentration X of different uncoupling agentssi, XjIt it is independent variable;
(4) secondary multiple regression equation and regression coefficient are carried out variance analysis and significance analysis;
(5) according to the relation of independent variable X and response value Y in the three-dimensional response surface design of secondary multivariate regression models generation and two dimension contour map analytical model;
(6) solve secondary multivariate regression models, obtain the optium concentration of compound uncoupling agent, namely complete a kind of method adopting Surface Analysis to determine compound uncoupling agent optium concentration.
Invention effect:
A kind of method adopting Surface Analysis to determine compound uncoupling agent optium concentration of the present invention, go for the determination problem of different composite uncoupling agents optium concentration, effective method is provided for the determination of each uncoupling agents concentration in compound uncoupling agent, compound uncoupling agent can be made to reduce sludge yield and to obtain best effect, there is significantly high use value.
In the present invention, the reaction condition of experiment of single factor is: in reactor, mixed liquor sludge concentration MLSS is maintained at about 500mg/L, and initial chemical oxygen demand COD is about 1000mg/L, 3 hours response time, and dissolved oxygen concentration DO is more than 5mg/L, and pH value is 7.0 ± 0.3.
Accompanying drawing explanation
Fig. 1 is that the present invention adopts response surface design analysis to determine the flow chart of compound uncoupling agent optium concentration method;
Fig. 2 determines that the reaction unit figure of uncoupling agents valid density experiment of single factor; Wherein, 1 is time controller, and 2 is air pump, and 3 is air door, and 4 is airflow meter, and 5 is main body reaction unit, and 6 is agitating device, and 7 is intake pool, and 8 is discharge bay, and 9 is dissolved oxygen meter, and 10 is pH analyzer;
Fig. 3 experiment of single factor determines the effective mud decrement concentration map of uncoupling agents 3,3', 4', 5-TCSA; Wherein, X0≈ 500mgMLSS/L, S0≈ 1000mgCOD/L;
Fig. 4 experiment of single factor determines the effective mud decrement concentration map of uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T; X0≈ 500mgMLSS/L, S0≈ 1000mgCOD/L;
Fig. 5 is the three-dimensional response surface design figure that in embodiment 1, observed growth yield is affected by 3,3', 4', 5-TCSA and 2,4,6-trichlorophenol, 2,4,6,-T concentration;
Fig. 6 is the two-dimentional contour map that in embodiment 1, observed growth yield is affected by 3,3', 4', 5-TCSA and 2,4,6-trichlorophenol, 2,4,6,-T concentration.
Detailed description of the invention
Detailed description of the invention one: the response surface design analysis that adopts of present embodiment determines that the method for compound uncoupling agent optium concentration comprises the steps:
(1) uncoupling agents is chosen, and according to observed growth yield Y under variable concentrations of the single uncoupling agents of technique study of experiment of single factorobs, it is determined that single uncoupling agents reduces the valid density of sludge yield;
(2) with observed growth yield YobsFor response value Y, the concentration of uncoupling agents is independent variable X, formulates experimental program according to center compounding design method, it is determined that the observed growth yield under every kind of scheme;
(3) observed growth yield in step (2) is arranged and Fitting Analysis, obtain secondary multivariate regression models Y obs = b 0 + Σ i = 1 k b i X i + Σ i = 1 j - 1 Σ j = 1 k b ij X i X j + Σ i = 1 k b ii X i 2 , wherein observed growth yield YobsIt is in response to value, b0It is constant term, bi, bij, biiIt is regression coefficient, the concentration X of different uncoupling agentssi, XjIt it is independent variable;
(4) secondary multiple regression equation and regression coefficient are carried out variance analysis and significance analysis;
(5) according to the relation of independent variable X and response value Y in the three-dimensional response surface design of secondary multivariate regression models generation and two dimension contour map analytical model;
(6) solve secondary multivariate regression models, obtain the optium concentration of compound uncoupling agent, namely complete a kind of method adopting Surface Analysis to determine compound uncoupling agent optium concentration.
In present embodiment, in the compounding design of center, the software of data analysis and matching is DX7-Trial;
The software solving secondary multivariate regression models adopts the formal version of Matlab7.0, U.S.'s MathWorks Company.
Present embodiment effect:
A kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration of present embodiment, go for the determination problem of different composite uncoupling agents optium concentration, effective method is provided for the determination of each uncoupling agents concentration in compound uncoupling agent, compound uncoupling agent can be made to reduce sludge yield and to obtain best effect, there is significantly high use value.
In present embodiment, the reaction condition of experiment of single factor is: in reactor, mixed liquor sludge concentration MLSS is maintained at about 500mg/L, initial chemical oxygen demand COD is about 1000mg/L, in 3 hours response time, dissolved oxygen concentration DO is more than 5mg/L, and pH value is 7.0 ± 0.3.
Detailed description of the invention two: present embodiment and detailed description of the invention one the difference is that: by experiment of single factor research uncoupling agents observed growth yield Y under variable concentrations in step (1)obsDetermine that when single uncoupling agents reduces the valid density of sludge yield, experiment reaction condition is: sludge concentration MLSS is maintained at about 500mg/L, and initial chemical oxygen demand COD is about 1000mg/L, 3 hours response time, dissolved oxygen concentration DO is more than 5mg/L, and pH value is 7.0 ± 0.3.Detailed description of the invention is identical with detailed description of the invention one.
Detailed description of the invention three: present embodiment and detailed description of the invention one or two are the difference is that observed growth yield Y in step (1) and (2)obsComputational methodsWherein MLSSOpenIt is the suspension sludge concentration of reaction incipient stage, MLSSOpenIt is the suspended sediment concentration of reflection incipient stage, MLSS3hIt is 3 hours rear suspension liquid sludge concentrations of reaction, CODOpenIt is the COD of reaction incipient stage, CODOpenIt is the COD of reaction incipient stage, COD3hIt it is the COD after reacting 3 hours. Other step and parameter and detailed description of the invention one or two are identical.
Illustrate to make specifically to introduce to invention with specific embodiment below in conjunction with accompanying drawing:
(1) choose uncoupling agents 3,3', 4', 5-TCSA and 2,4,6-trichlorophenol, 2,4,6,-Ts composition compound uncoupling agent, determine 3,3' by experiment of single factor, 4', the valid density of 5-TCSA and 2,4,6-trichlorophenol, 2,4,6,-T mud decrements;
Fig. 2 is for determining 3,3', 4', 5-TCSA and the experiment of single factor device schematic diagram of 2,4,6-trichlorophenol, 2,4,6,-T mud decrement valid density;
Fig. 3 is that experiment of single factor determines the effective mud decrement concentration map of uncoupling agents 3,3', 4', 5-TCSA; As can be drawn from Figure 3 when 3,3', 4', when 5-TCSA's concentration is less than 0.6mg/L, observed growth yield declines substantially, and reduced training substantially weakens when concentration is more than 0.6mg/L, it is determined that 3, the mud decrement valid density of 3', 4', 5-TCSA is 0.6mg/L;
Fig. 4 is that experiment of single factor determines the effective mud decrement concentration map of uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T; As can be drawn from Figure 4 when 2,4,6-trichlorophenol, 2,4,6,-T amine concentration less than 2.0mg/L time observed growth yield decline substantially, and reduced training substantially weakens when concentration is more than 2.0mg/L, it is determined that the mud decrement valid density of 2,4,6-trichlorophenol, 2,4,6,-Ts is 2.0mg/L;
(2) according to 3,3', 4', 5-TCSA's valid density is 0.6mg/L and 2, and 4,6-trichlorophenol, 2,4,6,-T valid density are that 2.0mg/L responds curved design, and response surface design design factor is as shown in table 1 with design level:
Table 1:
With observed growth yield YobsFor response value Y, the concentration of different uncoupling agentss is independent variable X, according to CentralCompositeDesign center compounding design method, the automatic PRODUCTION TRAITS of DX7Trial software is adopted to adopt response surface design to determine the experimental program of compound uncoupling agent optium concentration, being determined by experiment the observed growth yield under every kind of scheme, center compounding design method is as shown in table 2 with result:
Table 2:
(3) adopt DX7Trial software that the experimental result of not every kind of experimental program is carried out data compilation and matching, obtain secondary multivariate regression models Yobs=+0.997-0.999X1-0.149X2+0.068X1X2+0.516X12+0.0117X22; Wherein X1With X2It is uncoupling agents 3,3' respectively, 4', the concentration of 5-TCSA and the concentration of uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T, YobsIt it is observed growth yield;
(4) regression equation model and regression equation coefficient are carried out F inspection and P inspection, show that the results of analysis of variance and significance test result, the results of analysis of variance and significance test result are as shown in table 3:
Table 3:
Can be seen that secondary multivariate regression models and regression coefficient are all notable from F inspection with P assay as can be drawn from Table 3, his-and-hers watches 3 data carry out correlation analysis, and to obtain the relevance parameter R2 of model be 0.9930, correction correlation coefficient adjR2 is 0.9880, P value is less than 0.0001, illustrate that secondary multiple regression and actual experiment result have significantly high degree of fitting, 3 can be reflected preferably, 3', 4', 5-TCSA's concentration and uncoupling agents 2, the impact on observed growth yield of 4, the 6-trichlorophenol, 2,4,6,-T concentration;
(5) according to the three-dimensional response surface design of secondary multivariate regression models generation and two dimension contour map, the impact of observed growth yield is carried out significance impact analysis by the concentration of each uncoupling agents, what curved surface slope reacted each uncoupling agents concentration affects significance level, and equal pitch contour degree of crook reacts the coupling that apparent mud is affected of each uncoupling agents concentration;
Wherein, Fig. 5 is uncoupling agents 3,3' in example 1,4', the three-dimensional response surface design figure that observed growth yield is affected by 5-TCSA's concentration and uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T concentration; Can draw according to Fig. 5, uncoupling agents 3 in embodiment 1,3', 4', activated sludge all can be produced inhibitory action by the increase of 5-TCSA's concentration and the increase of uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T concentration, reducing observed growth yield, the apparent sludge yield impact of two kinds of uncoupling agents concentration is all comparatively notable;
Fig. 6 is the two-dimentional contour map that in example 2, observed growth yield is affected by uncoupling agents 3,3', 4', 5-TCSA's concentration and uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T concentration; Execute uncoupling agents 3,3' in example 1,4', 5-TCSA's concentration and uncoupling agents 2,4,6-trichlorophenol, 2,4,6,-T concentration as can be seen from Figure 6 and there is coupling to reducing observed growth yield, obtain better mud decrement effect than adding of single uncoupling agents;
(6) adopt matlab software to solve secondary multivariate regression models in embodiment 1, obtain working as X1Equal to 0.8mg/L and X2During equal to 2.8mg/L, Y value is 0.398;
Illustrate that when the optium concentration of uncoupling agents 3,3', 4', 5-TCSA's concentration is the optium concentration of 0.8mg/L and coupling agent 2,4,6-trichlorophenol, 2,4,6,-T in compound uncoupling agent in embodiment 1 be 2.8mg/L.

Claims (3)

1. one kind adopts the method that compound uncoupling agent optium concentration is determined in response surface design analysis, it is characterised in that adopt response surface design analysis to determine that the method for compound uncoupling agent optium concentration comprises the steps:
(1) uncoupling agents is chosen, and according to observed growth yield Y under variable concentrations of the single uncoupling agents of technique study of experiment of single factorobs, it is determined that single uncoupling agents reduces the valid density of sludge yield;
(2) with observed growth yield YobsFor response value Y, the concentration of uncoupling agents is independent variable X, formulates experimental program according to center compounding design method, it is determined that the observed growth yield under every kind of scheme;
(3) observed growth yield in step (2) is arranged and Fitting Analysis, obtain secondary multivariate regression models Y o b s = b 0 + Σ i = 1 k b i X i + Σ i = 1 j - 1 Σ j = 1 k b i j X i X j + Σ i = 1 k b i i X i 2 , Wherein observed growth yield YobsIt is in response to value, b0It is constant term, bi, bij, biiIt is regression coefficient, the concentration X of different uncoupling agentssi, XjIt it is independent variable;
(4) secondary multiple regression equation and regression coefficient are carried out variance analysis and significance analysis;
(5) according to the relation of independent variable X and response value Y in the three-dimensional response surface design of secondary multivariate regression models generation and two dimension contour map analytical model;
(6) solve secondary multivariate regression models, obtain the optium concentration of compound uncoupling agent, namely complete a kind of method adopting Surface Analysis to determine compound uncoupling agent optium concentration.
2. a kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration according to claim 1, it is characterised in that by experiment of single factor research uncoupling agents observed growth yield Y under variable concentrations in step (1)obsDetermine that when single uncoupling agents reduces the valid density of sludge yield, experiment reaction condition is: sludge concentration MLSS is maintained at about 500mg/L, and initial chemical oxygen demand COD is about 1000mg/L, 3 hours response time, dissolved oxygen concentration DO is more than 5mg/L, and pH value is 7.0 ± 0.3.
3. a kind of method adopting response surface design analysis to determine compound uncoupling agent optium concentration according to claim 2, it is characterised in that observed growth yield Y in step (1) and (2)obsComputational methodsWherein MLSSOpenIt is the sludge concentration of reaction incipient stage, MLSS3hIt is the sludge concentration after reacting 3 hours, CODOpenIt is the COD of reaction incipient stage, COD3hIt it is the COD after reacting 3 hours.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102358636A (en) * 2011-09-19 2012-02-22 哈尔滨工业大学 System for treating dye wastewater and method for treating triphenylmethane dye wastewater
CN102557351A (en) * 2012-01-19 2012-07-11 哈尔滨工业大学 Method for reinforcing nitrogen and phosphorus removal in sewage as well as sludge reduction coupling in process

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US6604051B1 (en) * 2000-04-17 2003-08-05 Southwest Research Institute System and method to determine thermophysical properties of a multi-component gas

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102358636A (en) * 2011-09-19 2012-02-22 哈尔滨工业大学 System for treating dye wastewater and method for treating triphenylmethane dye wastewater
CN102557351A (en) * 2012-01-19 2012-07-11 哈尔滨工业大学 Method for reinforcing nitrogen and phosphorus removal in sewage as well as sludge reduction coupling in process

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