CN118134306A - Method for evaluating aerobic operation performance of coking wastewater treatment system - Google Patents
Method for evaluating aerobic operation performance of coking wastewater treatment system Download PDFInfo
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 90
- 238000004939 coking Methods 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims description 28
- 238000013139 quantization Methods 0.000 claims abstract description 107
- 238000011156 evaluation Methods 0.000 claims abstract description 64
- 239000010802 sludge Substances 0.000 claims abstract description 62
- 239000002351 wastewater Substances 0.000 claims abstract description 18
- 230000000694 effects Effects 0.000 claims abstract description 10
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 21
- 238000013461 design Methods 0.000 claims description 14
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- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 11
- 229910021529 ammonia Inorganic materials 0.000 claims description 11
- FMMWHPNWAFZXNH-UHFFFAOYSA-N Benz[a]pyrene Chemical compound C1=C2C3=CC=CC=C3C=C(C=C3)C2=C2C3=CC=CC2=C1 FMMWHPNWAFZXNH-UHFFFAOYSA-N 0.000 claims description 10
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 10
- 238000004821 distillation Methods 0.000 claims description 10
- 239000003208 petroleum Substances 0.000 claims description 10
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 9
- 239000011574 phosphorus Substances 0.000 claims description 9
- 238000004062 sedimentation Methods 0.000 claims description 9
- 241000589651 Zoogloea Species 0.000 claims description 8
- 238000004458 analytical method Methods 0.000 claims description 6
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- 238000013528 artificial neural network Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
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- 229910052760 oxygen Inorganic materials 0.000 claims description 3
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- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- SMWDFEZZVXVKRB-UHFFFAOYSA-N Quinoline Chemical compound N1=CC=CC2=CC=CC=C21 SMWDFEZZVXVKRB-UHFFFAOYSA-N 0.000 description 2
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Activated Sludge Processes (AREA)
Abstract
The invention relates to an evaluation method for the aerobic operation performance of a coking wastewater treatment system, which combines the characteristics, treatment load, treatment requirement and operation efficiency of coking wastewater to construct an evaluation system taking a quantization factor as a reference; the evaluation system adopts a grading system; the evaluation system comprises a first-level quantization factor and a comprehensive performance score total score Q; the comprehensive performance score total score Q is used for judging the aerobic operation performance of the coking wastewater treatment system, the comprehensive performance score total score Q is determined by scoring each primary quantization factor and combining the weight of each primary quantization factor in the comprehensive performance score total score Q, and the primary quantization factors comprise treatment load assessment X, sludge activity efficiency Y, treatment efficiency M and operation efficiency N.
Description
Technical Field
The invention belongs to the technical field of coking wastewater treatment, and particularly relates to an aerobic operation performance evaluation method of a coking wastewater treatment system.
Background
The coking wastewater is wastewater produced in the processes of coke production by coal, gas purification and refining of chemical products, has large quantity and complex components, and contains inorganic pollutants such as ammonia, nitrogen, cyanide and the like and various organic pollutants such as phenols, naphthalene, pyridine, quinoline and the like. At present, coking wastewater of most domestic coking plants is treated by adopting an activated sludge biochemical process, wherein the treatment process comprises two stages of treatment processes, and the first stage adopts the procedures of dephenolization, ammonia distillation, decyanation and the like to separate pollutants in high-concentration wastewater; the second stage is to further carry out innocent treatment on the wastewater generated by the first stage, and generally, an activated sludge method is adopted for biodegradation.
The biggest challenge faced in the development of coking water treatment technology in recent years is the infinitely increased complexity of the process and system. At the same time, this also results in an unlimited increase in complexity of development and overall water treatment processes. If the treatment of coking wastewater is required to be stable and efficiently adapted to the production requirement, the flexibility of the technical application must be improved.
In the face of huge and complex system, a plurality of links, equipment and material energy sources are involved, so that a plurality of factors influencing the operation performance of a process system are caused, including uncertain events, equipment operation fluctuation, uneven operation level of workers and the like, and the evaluation of the operation performance has no standard and quantitative method, so that the change rule of the effluent quality of wastewater cannot be effectively predicted, and when the effluent is abnormal, abnormal reasons cannot be quickly and effectively found, and the abnormal reasons are timely disposed, so that the environment is polluted, and the production efficiency is influenced.
The aerobic is used as a key step in the coking wastewater treatment process, so that the load of water inlet pollutants of a biochemical system is reduced.
Therefore, the method for evaluating the aerobic running performance of the coking wastewater treatment system has the advantages of remarkable effect, low cost, simple operation and convenient popularization.
Disclosure of Invention
In order to solve the problems, the invention constructs an evaluation method for the aerobic operation performance of the coking wastewater treatment system, and the evaluation system of three-level quantization factors can evaluate the whole flow of coking wastewater, so that the method has remarkable significance for improving the effect, reducing the cost and improving the decision-making capability.
The invention relates to an evaluation method for the aerobic operation performance of a coking wastewater treatment system, which combines the characteristics, treatment load, treatment requirement and operation efficiency of coking wastewater to construct an evaluation system taking a quantization factor as a reference; the evaluation system adopts a grading system; the evaluation system comprises a first-level quantization factor and a comprehensive performance score total score Q; the comprehensive performance score total score Q is used for judging the aerobic operation performance of the coking wastewater treatment system, the comprehensive performance score total score Q is determined by scoring each primary quantization factor and combining the weight of each primary quantization factor in the comprehensive performance score total score Q, and the primary quantization factors comprise treatment load assessment X, sludge activity efficiency Y, treatment efficiency M and operation efficiency N.
Further, the first-level quantization factors comprise second-level quantization factors, and the first-level quantization factor scores are determined by combining the weights of the second-level quantization factors in the corresponding first-level quantization factors; the treatment load assessment X comprises two secondary quantization factors, namely a designed sludge load X1 and a designed volume load X2; the sludge activity efficiency Y comprises two secondary quantization factors which are respectively an activated sludge state Y1 and an activated sludge type Y2; the treatment efficiency M comprises three secondary quantization factors, namely wastewater treatment capacity M1, water outlet stability M2 and treatment load M3; the operation efficiency N comprises two secondary quantization factors, namely equipment effectiveness N1 and good oxygen pool operation economy N2.
Further, the secondary quantization factors comprise tertiary quantization factors, and the secondary quantization factors are scored by each tertiary quantization factor and are determined by combining weights occupied by each tertiary quantization factor in the corresponding secondary quantization factors;
The designed sludge load X1 comprises a three-level quantization factor which is an aerobic Chi Wuni load X11; the design volume load X2 comprises two three-level quantization factors, namely ammonia nitrogen volume load X21 and COD volume load X22;
The activated sludge state Y1 comprises three levels of quantization factors, namely an ammonia nitrogen SV30 sedimentation rate Y11, an aerobic tank sludge load fluctuation value Y12 and an aerobic sludge concentration Y13; the activated sludge species Y2 comprises two three-level quantization factors, namely primary and secondary biomass quantity fluctuation Y21 and zoogloea color fluctuation Y22;
The wastewater treatment capacity M1 comprises two three-level quantization factors, namely ammonia distillation wastewater treatment capacity M11 and other wastewater treatment capacities M12; the water outlet stability M2 comprises eleven three-level quantization factors, namely a total nitrogen fluctuation value M21, a COD fluctuation value M22, an ammonia nitrogen fluctuation value M23, a cyanide fluctuation value M24, a volatile phenol fluctuation value M25, a PH fluctuation value M26, a benzopyrene fluctuation value M27, a petroleum fluctuation value M28, a total phosphorus fluctuation value M29, a polycyclic aromatic hydrocarbon fluctuation value M210 and a benzene fluctuation value M211; the treatment load M3 comprises two three-level quantization factors, namely a COD volume load fluctuation value M31 and an ammonia nitrogen volume load fluctuation value M32;
The equipment effectiveness N1 comprises three levels of quantization factors, namely an equipment integrity rate N11, an equipment failure rate N12 and an equipment average maintenance time N13; the operation economy N2 of the aerobic tank comprises four three-level quantization factors, namely water energy cost N21 per ton, medicament cost N22 per ton, labor cost N23 per ton and equipment maintenance cost N24.
Further, the weight of each first-level quantization factor in the total score Q of the comprehensive performance, the weight of each second-level quantization factor in the corresponding first-level quantization factor, and the weight of each third-level quantization factor in the corresponding second-level quantization factor are obtained according to historical data and artificial experience.
Further, the weight of X, Y, M, N in Q is determined by the initial value and the adjusting parameter, the initial value is determined according to the historical data and the manual experience, and the adjusting parameter is 0.75-1.25.
Further, the weight of X=x1+x2, wherein the weight of X1 and X2 in X is determined by an initial value and an adjusting parameter, the initial value is determined according to historical data and manual experience, and the adjusting parameter is 0.8-1.2;
y=y1+y2, the initial values of the weights occupied by Y1 and Y2 in Y are 75% and 25%, respectively, and the adjustment parameters are 0.75-1.25;
The initial values of the weights occupied by M=M1+M2+M3, M1, M2 and M3 in M are respectively 30%, 40% and 30%, and the adjustment parameters are 0.75-1.25;
the initial values of the weights occupied by N=N1+N2, N1 and N2 in N are 40% and 60%, respectively, and the adjustment parameters are 0.75-1.25.
Further, the weight of each first-level quantization factor in the total score Q of the comprehensive performance, the weight of each second-level quantization factor in the first-level quantization factor and the weight of each third-level quantization factor in the second-level quantization factor are obtained by integrating subjective weight and objective weight; the subjective weight is obtained by an analytic hierarchy process, and the objective weight is obtained by an entropy weight process.
The invention discloses an aerobic operation performance evaluation system of a coking wastewater treatment system, which is characterized in that a performance analysis model based on a neural network is constructed based on an aerobic operation performance evaluation method of the coking wastewater treatment system, operation data, historical data and manual experience are input into the performance analysis model, and the system is continuously and iteratively trained and learned, and error values are corrected to obtain the aerobic operation performance evaluation system of the coking wastewater treatment system.
The invention has the beneficial effects that:
The evaluation system established by the invention can be adjusted in a targeted manner according to the actual conditions of coking wastewater of different coking enterprises, so that an omnibearing aerobic operation performance scoring system of each level is ensured to be established. The evaluation system can ensure the high-quality, high-efficiency and high-stability operation of the whole coking wastewater.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an evaluation system for coking wastewater according to the present application.
Detailed Description
The following description of the technical solution in the embodiments of the present invention is clear and complete. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
According to the method for evaluating the aerobic running performance of the coking wastewater treatment system, the whole flow of coking wastewater can be evaluated through the evaluation system of the three-level quantization factors, so that the method has remarkable significance in improving the effect, reducing the cost and improving the decision-making capability.
The invention relates to an evaluation method for the aerobic operation performance of a coking wastewater treatment system, which comprises the following steps: and establishing a quantization factor evaluation system by combining the characteristics, the treatment load, the treatment requirement and the operation efficiency of the coking wastewater, wherein the quantization factor evaluation system comprises a primary quantization factor, a secondary quantization factor, a tertiary quantization factor and a comprehensive performance score total score Q. The evaluation system adopts a scoring system, and the total score Q of the comprehensive performance is determined by scoring the primary quantization factors and combining the weights of the primary quantization factors in the total score Q of the comprehensive performance. The primary quantization factor is obtained by combining the corresponding secondary quantization factor scores with the weight occupied by the secondary quantization factor scores in the primary quantization factor. The secondary quantization factor is obtained by combining the corresponding tertiary quantization factor score with the weight occupied by the secondary quantization factor. In this embodiment, the weight includes an initial value and an adjustment parameter, and the initial value may be obtained by combining historical data with human experience.
In other embodiments, the weights may also be divided into subjective weights and objective weights. The subjective weight is obtained by an analytic hierarchy process, and the objective weight is obtained by an entropy weight process.
The primary quantization factors are four, namely, treatment load evaluation X, sludge activity efficiency Y, treatment efficiency M and operation efficiency N, as shown in figure 1. Q=x+y+m+n; the weight occupied in Q is determined by an initial value and an adjusting parameter, the initial value is determined according to historical data and manual experience, the adjusting parameter is 0.75-1.25, and the adjusting and modifying can be carried out according to actual customer requirements. For example: x, Y, M, N the initial weight value of Q is 25%, 30%, 35%, 10% and the regulating parameter is 0.75-1.25.
The treatment load assessment X includes two secondary quantization factors, a design sludge load X1 and a design volume load X2, respectively. That is, x=x1+x2. The initial values of the weights of X1 and X2 in X are respectively 50% and 50%, and the adjusting parameters are 0.8-1.2, so that the weight can be adjusted and modified according to the actual customer requirements.
The sludge load X1 is designed to be an aerobic Chi Wuni load X11. X11= (daily average actual aerobic Chi Wuni load-daily design aerobic tank sludge load value)/daily design aerobic tank sludge load value X100%, aerobic Chi Wuni load X11 is: in the time period of the secondary evaluation of the ammonia distillation wastewater treatment operation, the difference value between the daily average actual aerobic tank sludge load and the daily design aerobic tank sludge load value percentage are as follows in units: percent of the total weight of the composition. In actual use, the closer the aerobic tank sludge load is to the design value, the higher the score.
The design volume load X2 includes an ammonia nitrogen volume load X21 and a COD volume load X22, that is, x2=x21+x22; the initial values of the weights of X21 and X22 in X2 are respectively 50% and 50%, the adjusting parameters are 0.8-1.2, and the adjusting and modifying can be carried out according to the actual customer demands;
Wherein x21= (actual ammonia nitrogen volume load-ammonia nitrogen volume load design value)/ammonia nitrogen volume load design value X100%. The ammonia nitrogen volume load X21 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value of the actual ammonia nitrogen volume load and the ammonia nitrogen volume load design value is the percentage of the ammonia nitrogen volume load design value, the unit is: percent of the total weight of the composition.
X22= (actual COD volume load-preset COD volume load)/preset COD volume load X100%. COD volume load X22 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the actual COD volume load and the preset COD volume load is equal to the percentage of the preset COD volume load in units: percent of the total weight of the composition.
With respect to the processing load evaluation, the score is higher as the three-level quantization factor is closer to the design value.
The sludge activity efficiency Y comprises two secondary quantization factors which are respectively an activated sludge state Y1 and an activated sludge type Y2; the initial values of the weights occupied by Y=Y1+Y2 in Y1 and Y2 are 75% and 25% respectively, and the adjustment parameters are 0.75-1.25, and can be adjusted and modified according to actual customer requirements.
Y1=aerobic biological activated sludge state/preset activated sludge state reference value x 100%, activated sludge state Y1 is: in the time period of the aerobic operation of the coking wastewater treatment, the unit is the percentage of the activated sludge state of the aerobic biological treatment link of the coking wastewater treatment and the preset activated sludge state reference value: percent (a),
Further, the activated sludge state Y1 comprises an ammonia nitrogen SV30 sedimentation rate Y11, an aerobic tank sludge load fluctuation value Y12 and an aerobic sludge concentration Y13. Y1=y11+y12+y13, and the weights of Y11, Y12, and Y13 in Y1 are all 33.3%.
Wherein y11= (actual aerobic sludge daily-average ammonia nitrogen SV30 sedimentation rate-preset aerobic sludge reference ammonia nitrogen SV30 sedimentation rate)/preset aerobic sludge reference ammonia nitrogen SV30 sedimentation rate x 100%; the ammonia nitrogen SV30 sedimentation rate Y11 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between the actual daily-average ammonia nitrogen SV30 sedimentation rate of the aerobic sludge and the preset basic ammonia nitrogen SV30 sedimentation rate of the aerobic sludge is as follows: percent of the total weight of the composition.
Y12= (actual aerobic sludge daily sludge load-preset aerobic tank sludge load)/preset aerobic tank sludge load x 100%; the sludge load fluctuation value Y12 of the aerobic tank is as follows: in the coking wastewater treatment operation time period of secondary evaluation, the actual aerobic Chi Wuni days is the percentage of the difference value of the sludge load of the preset aerobic tank and the sludge load of the preset aerobic tank, and the unit is: percent of the total weight of the composition.
Y13= (actual aerobic tank daily sludge concentration-preset aerobic tank sludge concentration)/preset aerobic tank sludge concentration x 100%; the aerobic sludge concentration Y13 is as follows: and in the time period of coking wastewater treatment operation of secondary evaluation, the difference value between the daily sludge concentration of the actual aerobic tank and the preset aerobic sludge concentration and the percentage of the preset aerobic tank sludge concentration are calculated.
Further, the activated sludge species Y2 includes a number of primary and secondary organisms Y21 and a zoogloea color Y22; y2=y21+y22, and the weights of Y21 and Y22 in Y2 are 50%.
Wherein y21=fluctuation of the number of original metazoans/fluctuation of the number of preset original metazoans x 100%; the fluctuation of the number of the original biomass Y21 is as follows: in the coking wastewater treatment operation time period of secondary evaluation, the fluctuation of the number of the original metazoan and the preset percentage of the fluctuation of the number of the original metazoan are shown in units: percent of the total weight of the composition.
Y22=number of zoogloea color fluctuations/number of preset zoogloea color fluctuations x 100%; the zoogloea color fluctuation Y22 is: and (3) in the coking wastewater treatment operation time period of the secondary evaluation, the percentage of the fluctuation of the zoogloea color change to the number of the fluctuation of the preset zoogloea color change is expressed in units: percent of the total weight of the composition.
The treatment efficiency M comprises three secondary quantization factors, namely wastewater treatment capacity M1, water outlet stability M2 and treatment load M3. The initial values of the weights occupied by M=M1+M2+M3, M1, M2 and M3 in M are respectively 30%, 40% and 30%, and the adjusting parameters are 0.75-1.25, so that the adjustment and modification can be carried out according to the actual customer demands.
The wastewater treatment amount M1 includes an ammonia distillation wastewater treatment amount M11 and other wastewater treatment amounts M12.
M1=m11+m12, and the initial values of the weights of M11 and M12 in M1 are 70% and 30%, respectively.
Wherein m11=actual ammonia distillation wastewater treatment amount/preset ammonia distillation wastewater treatment amount x 100%; the ammonia distillation wastewater treatment capacity M11 is as follows: in the coking wastewater treatment operation time period of the secondary evaluation, the percentage of the actual ammonia distillation wastewater treatment amount to the preset ammonia distillation wastewater treatment amount is as follows: percent of the total weight of the composition.
M12=actual other wastewater treatment amount/preset other wastewater treatment amount x 100%; other wastewater treatment amounts M12 were: and in the other wastewater treatment operation time period of the secondary evaluation, the percentage of other wastewater treatment capacity to the preset other wastewater treatment capacity is as follows: percent of the total weight of the composition.
The water outlet stability M2 comprises a total nitrogen fluctuation value M21, a COD fluctuation value M22, an ammonia nitrogen fluctuation value M23, a cyanide fluctuation value M24, a volatile phenol fluctuation value M25, a PH fluctuation value M26, a benzopyrene fluctuation value M27, a petroleum fluctuation value M28, a total phosphorus fluctuation value M29, a polycyclic aromatic hydrocarbon fluctuation value M210 and a benzene fluctuation value M211. M2=m21+m22+m23+m24+m25+m26+m27+m28+m29+m210+m211. The weights of M21, M22, M23, M24, M25, M26, M27, M28, M29, M210 and M211 in M2 are 9.09%.
Wherein m21=actual effluent total nitrogen daily average concentration-preset effluent total nitrogen reference concentration)/preset effluent total nitrogen reference concentration x 100%; the total nitrogen fluctuation value M21 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the actual daily average concentration of the total nitrogen of the effluent and the preset reference concentration of the total nitrogen of the effluent and the percentage of the preset reference concentration of the total nitrogen of the effluent are given in units: percent of the total weight of the composition.
M22= (actual effluent COD daily average concentration-preset effluent COD reference concentration)/preset effluent COD reference concentration x 100%; COD fluctuation value M22 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between the actual effluent COD daily average concentration and the preset effluent COD standard concentration is as follows: percent of the total weight of the composition.
M23= (actual effluent ammonia nitrogen daily average concentration-preset effluent ammonia nitrogen reference concentration)/preset effluent ammonia nitrogen reference concentration x 100%; the ammonia nitrogen fluctuation value M23 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the actual effluent ammonia nitrogen daily average concentration and the preset effluent ammonia nitrogen reference concentration and the percentage of the preset effluent ammonia nitrogen reference concentration are as follows: percent of the total weight of the composition.
M24= (actual effluent cyanide daily average concentration-preset effluent cyanide reference concentration)/preset effluent cyanide reference concentration x 100%; cyanide fluctuation value M24 is: in the time period of coking wastewater treatment operation of secondary evaluation, the difference value between the actual daily average concentration of the effluent cyanide and the preset reference concentration of the effluent cyanide and the percentage of the preset reference concentration of the effluent cyanide are expressed in units: percent of the total weight of the composition.
M25= (actual effluent volatile phenol daily average concentration-preset effluent volatile phenol reference concentration)/preset effluent volatile phenol reference concentration x 100%; the volatile phenol fluctuation value M25 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the actual daily average concentration of the effluent volatile phenol and the preset standard concentration of the effluent volatile phenol and the percentage of the preset standard concentration of the effluent volatile phenol are as follows in units: percent of the total weight of the composition.
M26= (actual effluent PH daily average concentration-preset effluent PH reference concentration)/preset effluent PH reference concentration x 100%; the pH fluctuation M26 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between the actual effluent PH average concentration and the preset effluent PH reference concentration is as follows: percent of the total weight of the composition.
M27= (actual effluent benzopyrene daily average concentration-preset effluent benzopyrene reference concentration)/preset effluent benzopyrene reference concentration x 100%; benzopyrene fluctuation value M27 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the daily average concentration of the actual effluent benzopyrene and the preset reference concentration of the effluent benzopyrene and the percentage of the preset reference concentration of the effluent benzopyrene are as follows in units: percent of the total weight of the composition.
M28= (actual effluent petroleum daily average concentration-preset effluent petroleum reference concentration)/preset effluent petroleum reference concentration x 100%; the petroleum type fluctuation value M28 is as follows: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the actual daily average concentration of the effluent petroleum and the preset effluent petroleum standard concentration and the percentage of the preset effluent petroleum standard concentration are expressed in units: percent of the total weight of the composition.
M29= (actual effluent total phosphorus daily average concentration-preset effluent total phosphorus reference concentration)/preset effluent total phosphorus reference concentration x 100%; the total phosphorus fluctuation value M29 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between the actual daily average concentration of the total phosphorus in the effluent and the preset reference concentration of the total phosphorus in the effluent is as follows: percent of the total weight of the composition.
M210= (actual effluent polyaromatic hydrocarbon daily average concentration-preset effluent polyaromatic hydrocarbon reference concentration)/preset effluent polyaromatic hydrocarbon reference concentration x 100%; the polycyclic aromatic hydrocarbon fluctuation value M210 is: in the coking wastewater treatment operation time period of secondary evaluation, the difference value between the daily average concentration of the actual effluent polycyclic aromatic hydrocarbon and the preset effluent polycyclic aromatic hydrocarbon reference concentration and the percentage of the preset effluent polycyclic aromatic hydrocarbon reference concentration are as follows: percent of the total weight of the composition.
M211= (actual average concentration of benzene out of water-preset reference concentration of benzene out of water)/preset standard concentration of benzene out of water x 100%; benzene fluctuation value M211 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between the actual daily average concentration of the effluent and the preset standard concentration of the effluent phenyl is as follows: percent of the total weight of the composition.
The treatment load M3 comprises a COD volume load fluctuation value M31 and an ammonia nitrogen volume load fluctuation value M32; m3=m31+m32, and the weights of M31 and M32 in M3 are 50%.
Wherein m31= (actual effluent COD volume load fluctuation-preset effluent COD volume load fluctuation reference)/preset effluent COD volume load fluctuation reference x 100%; COD volume load fluctuation value M31 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between the actual effluent COD volume load fluctuation and the preset effluent COD volume load fluctuation benchmark is as follows: percent of the total weight of the composition.
M32= (actual effluent ammonia nitrogen volume load fluctuation-preset effluent ammonia nitrogen volume load fluctuation reference)/preset effluent ammonia nitrogen volume load fluctuation reference x 100%; the ammonia nitrogen volume load fluctuation value M32 is: in the coking wastewater treatment operation time period of secondary evaluation, the percentage of the difference value between actual effluent ammonia nitrogen volume load fluctuation and preset effluent ammonia nitrogen volume load fluctuation reference is as follows: percent of the total weight of the composition.
The operating efficiency N comprises two secondary quantization factors, namely equipment effectiveness N1 and good oxygen pool operating economy N2. The initial values of the weights occupied by N=N1+N2, N1 and N2 in N are 40% and 60% respectively, the adjusting parameters are 0.75-1.25, and the adjusting and modifying can be carried out according to the actual customer demands.
The equipment availability N1 includes an equipment integrity rate N11, an equipment failure rate N12, and an equipment average maintenance time N13. N1=n11+n12+n13. The weights of N11, N12 and N13 in N1 are all one third, namely 33.3 percent.
Where n11=equipment cumulative operation time/(equipment count×total wastewater treatment time) ×100%. The equipment integrity rate N11 is: the percentage of the average equipment running time to the total wastewater treatment time in units of the time period of the coking wastewater treatment run time of the secondary evaluation: percent of the total weight of the composition.
N12=cumulative number of device failures/preset device failure number reference value x 100%; the equipment failure rate N12 is: and in the coking wastewater treatment operation time period of secondary evaluation, the cumulative number of equipment faults and the percentage of a preset equipment fault number reference value are in units: percent of the total weight of the composition.
N13=cumulative time for the equipment failure release recovery operation/(cumulative number of failures×preset equipment maintenance average time reference value) ×100%; the average maintenance time N13 of the equipment is: and in the time period of the coking wastewater treatment operation of the secondary evaluation, the average time for equipment failure relieving and recovering operation is the percentage of a preset equipment maintenance average time reference value, wherein the units are as follows: percent of the total weight of the composition.
The operating economy N2 of the aerobic tank comprises a ton water energy cost N21, a ton water medicament cost N22, a ton water manpower cost N23 and an equipment maintenance cost N24. N2=n21+n22+n23+n24, and weights of N21, N22, N23, and N24 in N2 are 25%;
N21=coking wastewater treatment energy accumulated cost/(accumulated treatment water amount×preset ton water energy cost reference value) ×100%; the ton water energy cost N21 is: in the coking wastewater treatment operation time period of secondary evaluation, the cumulative cost of coking wastewater energy and the percentage of the cumulative treated water quantity and the preset ton water energy cost reference value are calculated in units: percent of the total weight of the composition.
N22=coking wastewater treatment chemical accumulated cost/(accumulated treatment water amount×preset ton water chemical cost reference value) ×100%; the ton water medicament cost N22 is as follows: in the coking wastewater treatment operation time period of secondary evaluation, the cumulative cost of coking wastewater treatment agents and the percentage of the cumulative treatment water quantity and the preset ton water agent cost reference value are in units: percent of the total weight of the composition.
N23=coking wastewater treatment manpower accumulated cost/(accumulated treatment water amount×preset ton water treatment manpower cost reference value) ×100%; the manpower cost N23 of ton water is the percentage of the accumulated cost and the accumulated water treatment amount of the coking wastewater treatment manpower and the preset reference value of the manpower cost of ton water treatment in the coking wastewater treatment operation time period of the next evaluation, and the unit is: percent of the total weight of the composition.
N24=equipment repair actual cumulative cost/equipment repair budget x 100%; the equipment maintenance cost N24 is as follows: in the coking wastewater treatment operation time period of the secondary evaluation, the equipment maintenance accumulated cost and the percentage of the preset equipment maintenance budget are in units: percent of the total weight of the composition.
The interval scores are as follows:
The invention also provides a coking wastewater treatment system aerobic operation performance evaluation system, which is characterized in that a performance analysis model based on a neural network is constructed based on the coking wastewater treatment system aerobic operation performance evaluation method, operation data, historical data and manual experience are input into the performance analysis model, and the operation data, the historical data and the manual experience are continuously and iteratively trained and learned, and error values are corrected, so that the coking wastewater treatment system aerobic operation performance evaluation system is obtained.
Through the evaluation system, the quality of the tail coking wastewater can be obtained by analyzing each quantization factor, and the whole process can be adjusted in a targeted manner, so that the comprehensive quantitative evaluation of the aerobic operation performance is carried out from each link.
It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (8)
1. An evaluation method for the aerobic operation performance of a coking wastewater treatment system is characterized in that an evaluation system taking a quantization factor as a reference is constructed by combining the characteristics, treatment load, treatment requirement and operation efficiency of coking wastewater; the evaluation system adopts a grading system; the evaluation system comprises a first-level quantization factor and a comprehensive performance score total score Q; the comprehensive performance score total score Q is used for judging the aerobic operation performance of the coking wastewater treatment system, the comprehensive performance score total score Q is determined by scoring each primary quantization factor and combining the weight of each primary quantization factor in the comprehensive performance score total score Q, and the primary quantization factors comprise treatment load assessment X, sludge activity efficiency Y, treatment efficiency M and operation efficiency N.
2. The method for evaluating the aerobic running performance of a coking wastewater treatment system according to claim 1, wherein the primary quantization factors comprise secondary quantization factors, and the primary quantization factor scores are determined by the weights of the secondary quantization factor scores and the secondary quantization factors in the corresponding primary quantization factors; the treatment load assessment X comprises two secondary quantization factors, namely a designed sludge load X1 and a designed volume load X2; the sludge activity efficiency Y comprises two secondary quantization factors which are respectively an activated sludge state Y1 and an activated sludge type Y2; the treatment efficiency M comprises three secondary quantization factors, namely wastewater treatment capacity M1, water outlet stability M2 and treatment load M3; the operation efficiency N comprises two secondary quantization factors, namely equipment effectiveness N1 and good oxygen pool operation economy N2.
3. The method for evaluating the aerobic running performance of a coking wastewater treatment system according to claim 2, wherein the secondary quantization factors comprise tertiary quantization factors, and the secondary quantization factors are determined by scoring the tertiary quantization factors and combining weights occupied by the tertiary quantization factors in the corresponding secondary quantization factors;
The designed sludge load X1 comprises a three-level quantization factor which is an aerobic Chi Wuni load X11; the design volume load X2 comprises two three-level quantization factors, namely ammonia nitrogen volume load X21 and COD volume load X22;
The activated sludge state Y1 comprises three levels of quantization factors, namely an ammonia nitrogen SV30 sedimentation rate Y11, an aerobic tank sludge load fluctuation value Y12 and an aerobic sludge concentration Y13; the activated sludge species Y2 comprises two three-level quantization factors, namely primary and secondary biomass quantity fluctuation Y21 and zoogloea color fluctuation Y22;
The wastewater treatment capacity M1 comprises two three-level quantization factors, namely ammonia distillation wastewater treatment capacity M11 and other wastewater treatment capacities M12; the water outlet stability M2 comprises eleven three-level quantization factors, namely a total nitrogen fluctuation value M21, a COD fluctuation value M22, an ammonia nitrogen fluctuation value M23, a cyanide fluctuation value M24, a volatile phenol fluctuation value M25, a PH fluctuation value M26, a benzopyrene fluctuation value M27, a petroleum fluctuation value M28, a total phosphorus fluctuation value M29, a polycyclic aromatic hydrocarbon fluctuation value M210 and a benzene fluctuation value M211; the treatment load M3 comprises two three-level quantization factors, namely a COD volume load fluctuation value M31 and an ammonia nitrogen volume load fluctuation value M32;
The equipment effectiveness N1 comprises three levels of quantization factors, namely an equipment integrity rate N11, an equipment failure rate N12 and an equipment average maintenance time N13; the operation economy N2 of the aerobic tank comprises four three-level quantization factors, namely water energy cost N21 per ton, medicament cost N22 per ton, labor cost N23 per ton and equipment maintenance cost N24.
4. The method for evaluating the aerobic running performance of the coking wastewater treatment system according to claim 3, wherein the weight of each primary quantization factor in the total score Q of the comprehensive performance, the weight of each secondary quantization factor in the corresponding primary quantization factor and the weight of each tertiary quantization factor in the corresponding secondary quantization factor are obtained according to historical data and artificial experience.
5. The method for evaluating the aerobic running performance of a coking wastewater treatment system according to claim 3, wherein the weight of X, Y, M, N in Q is determined by an initial value and an adjusting parameter, the initial value is determined according to historical data and manual experience, and the adjusting parameter is 0.75-1.25.
6. The method for evaluating the aerobic running performance of a coking wastewater treatment system according to claim 5, wherein the weight of X=x1+x2, wherein the weight of X1 and X2 in X is determined by an initial value and an adjustment parameter, the initial value is determined according to historical data and artificial experience, and the adjustment parameter is 0.8-1.2;
y=y1+y2, the initial values of the weights occupied by Y1 and Y2 in Y are 75% and 25%, respectively, and the adjustment parameters are 0.75-1.25;
The initial values of the weights occupied by M=M1+M2+M3, M1, M2 and M3 in M are respectively 30%, 40% and 30%, and the adjustment parameters are 0.75-1.25;
the initial values of the weights occupied by N=N1+N2, N1 and N2 in N are 40% and 60%, respectively, and the adjustment parameters are 0.75-1.25.
7. The method for evaluating the aerobic running performance of a coking wastewater treatment system according to claim 3, wherein the weight of each primary quantization factor in the total score Q of the comprehensive performance, the weight of each secondary quantization factor in the primary quantization factor and the weight of each tertiary quantization factor in the secondary quantization factor are obtained by integrating subjective weights and objective weights; the subjective weight is obtained by an analytic hierarchy process, and the objective weight is obtained by an entropy weight process.
8. The system is characterized in that a performance analysis model based on a neural network is constructed based on an aerobic operation performance evaluation method of the coking wastewater treatment system, operation data, historical data and manual experience are input into the performance analysis model, and the error value is corrected through continuous iterative training and learning, so that the system for evaluating the aerobic operation performance of the coking wastewater treatment system is obtained.
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