Method for regulating and controlling sewage treatment facility based on microbial activity indexes

Abstract

The invention provides a method for regulating and controlling a sewage treatment facility based on microbial activity indexes, and relates to the technical field of environmental protection. The method comprises the following steps: installing an ATP online detector and / or an SOUR online detector in each section of treatment pond of a sewage treatment system to obtain detection data; carrying out comparison and preliminary analysis on ATP detection data and SOUR data of each section of treatment pool and a reference value, and adjusting correct installation of equipment; after adjustment, combining and comparing the ATP and / or SOUR data of each section with the reference value and the water quality data at the sewage outlet to obtain a conclusion, and regulating and controlling the operation of the sewage treatment system. According to the invention, through real-time detection of the treatment pool at each stage, a plurality of data are integrated to directly reflect and adjust the problems existing in the sewage system, so that the power consumption and the chemical consumption in the sewage treatment industry are further reduced.

Description

Technical Field

[0001] The present application belongs to the field of environmental technology, and specifically relates to a method for regulating sewage treatment facilities based on microbial activity indicators. Background Art

[0002] The activated sludge process is an aerobic biological treatment method for sewage, first invented in the UK by Edward Ardern and William T. Lockett in 1914. It is a wastewater biological treatment technology based on activated sludge. By continuously injecting air into the sewage and cultivating it for a period of time, floccules containing a large number of aerobic microorganisms are formed in the water - activated sludge. These activated sludges can absorb and degrade organic matter in the water, thereby achieving the purpose of purifying wastewater.

[0003] Biological sewage treatment methods represented by the activated sludge method are widely used throughout the world. However, the current routine monitoring indicators of sewage treatment systems generally only include water quality indicators (COD, ammonia nitrogen, total nitrogen, BOD), operation indicators (DO, reflow ratio, MLSS) and material consumption indicators (electricity, drug consumption), while there is a lack of effective normal monitoring indicators for microorganisms that play a core role in sewage treatment systems.

[0004] Strictly speaking, the microbial activity index refers to the sum of all life activities of microorganisms in a certain period of time, or the sum of all processes mediated by microorganisms in the environmental medium, but it is difficult to directly measure microbial activity at present. Summary of the invention

[0005] The purpose of the present invention is to propose a method for regulating sewage treatment facilities based on microbial activity indicators, through real-time detection of treatment pools at each stage, integrating multiple data to directly reflect the problems existing in the sewage system, and further reduce the electricity consumption and drug consumption in the sewage treatment industry.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A method for regulating a sewage treatment facility based on microbial activity indicators comprises the following steps:

[0008] S1. Install ATP online detector and / or SOUR online detector in each treatment pool of the sewage treatment system to obtain test data; the test is carried out every 6 hours to continuously collect ATP and SOUR data of the sewage treatment system;

[0009] S2. Compare and preliminarily analyze the ATP test data and SOUR data of each treatment pool with the reference value, and adjust the correct installation of the equipment;

[0010] S3. After adjustment, the ATP and / or SOUR data of each section are compared with the reference value and the water quality data of the sewage outlet to draw conclusions and regulate the operation of the sewage treatment system.

[0011] In some embodiments of the present application, the specific installation scheme of the ATP online detector and the SOUR online detector in the above step S1 is: install the ATP online detector in the treatment pools of the anaerobic section, anoxic section, and aerobic section of the sewage treatment system; install the SOUR online detector in the treatment pools of the anoxic section and aerobic section, and the sampling port of the detector is set in the middle of each section of the pool. And the sampling port should be kept away from the external reflux port (sludge reflux) and the internal reflux port (nitrification liquid reflux) to prevent the reflux liquid from affecting the test results.

[0012] In some embodiments of the present application, the reference values ​​of ATP / SOUR in each section in the above-mentioned S2 step are: ATP in the anaerobic section is 100-600nM, ATP in the anoxic section is 300-600nM, ATP in the aerobic section is 400-650nM, SOUR in the anoxic section is 0.5-2.5mgO2 / (gMLSS·h), and SOUR in the aerobic section is 0.8-2.0mgO2 / (gMLSS·h).

[0013] In some embodiments of the present application, the water quality data at the sewage outlet in the above-mentioned step S3 includes the COD value and / or TN value of the outlet water.

[0014] In some embodiments of the present application, the control method of the above-mentioned step S3 includes the cases based on single-pool ATP data, based on single-pool SOUR data and based on single-pool ATP+SOUR.

[0015] In some embodiments of the present application, the above-mentioned regulation method based on single-pool ATP data includes the following situations:

[0016] 1-1. The anaerobic section is lower than the lower limit of the reference value, the anoxic section and the aerobic section are within the reference value range, and the effluent COD is greater than 50 mg / L (implementing the Class A standard plant and station of the urban sewage discharge standard, the same below), indicating that the sewage treatment facilities have not effectively decomposed the macromolecular organic matter (principle: low ATP value indicates that the anaerobic bacteria are poorly active. The macromolecular organic matter in the sewage will be decomposed into small molecular organic matter under the action of heterotrophic bacteria in the anaerobic section. The poor activity of anaerobic bacteria cannot convert the macromolecular organic matter into small molecular organic matter, which affects the subsequent treatment). It is diagnosed that the anaerobic section does not maintain a strict anaerobic state, and the DO concentration of the anaerobic section needs to be controlled and adjusted below 0.2 mg / L;

[0017] 1-2. The anaerobic section is higher than the upper limit of the reference value, the anoxic section and the aerobic section are within the reference value range, and the effluent COD is greater than 50 mg / L (principle: high ATP concentration indicates high anaerobic activity. Highly active anaerobic bacteria fail to decompose large molecular organic matter in the sewage into small molecular organic matter in the anaerobic section, indicating that non-functional anaerobic bacteria have become the dominant species among anaerobic bacteria, and it is necessary to further suppress "miscellaneous bacteria" and introduce and supplement functional heterotrophic bacteria). It is diagnosed that the functional anaerobic bacteria in the anaerobic section are not dominant, and it is necessary to add supplementary anaerobic bacteria to re-cultivate and enrich the functional anaerobic bacteria;

[0018] 1-3. The anoxic section is lower than the lower limit of the reference value, while the anaerobic section and the aerobic section are within the reference value range, and the TN index is greater than 15 mg / L (principle: low ATP concentration indicates low activity of facultative bacteria, and the environment is not conducive to the growth of facultative bacteria. Insufficient facultative bacteria lead to insufficient removal of total nitrogen in the anoxic section, resulting in excessive total nitrogen in the effluent). It is diagnosed that facultative bacteria do not dominate the anoxic section, and the DO of the anoxic section needs to be controlled at 0.2-0.5 mg / L;

[0019] 1-4. The anoxic section is higher than the upper limit of the reference value, while the anaerobic section and the aerobic section are within the reference value range, and the TN index is greater than 15 mg / L (principle: high ATP concentration indicates high activity of facultative bacteria, but highly active facultative bacteria fail to remove total nitrogen from sewage in the anaerobic section, indicating that non-functional facultative bacteria have become the dominant species among facultative bacteria, and it is necessary to further suppress "miscellaneous bacteria" and introduce and supplement functional facultative bacteria). It is diagnosed that the functional anaerobic bacteria in the anoxic section are not dominant, and it is necessary to add supplementary facultative bacteria to re-cultivate and enrich the functional anoxic bacteria;

[0020] 1-5. The aerobic section is lower than the lower limit of the reference value, the anaerobic section and the anoxic section are within the reference value range, and the effluent COD is greater than 50 mg / L (implementing the Class A standard plant station of the urban sewage discharge standard, the same below) (Principle: Low ATP concentration indicates low activity of aerobic bacteria, the external environment is not conducive to the growth of aerobic bacteria, and insufficient aerobic bacteria lead to insufficient removal of COD in the aerobic section, resulting in excessive effluent COD). The DO of the aerobic section is diagnosed as low, and the DO of the aerobic section needs to be controlled at 2-3 mg / L;

[0021] 1-6. The aerobic section is higher than the upper limit of the reference value, the anaerobic section and the anoxic section are within the reference value range, and the effluent COD is greater than 50 mg / L (principle: high ATP concentration indicates high activity of aerobic bacteria, but highly active aerobic bacteria cannot remove COD in the sewage in the anaerobic section, indicating that non-functional aerobic bacteria have become the dominant species among aerobic bacteria, and it is necessary to further suppress "miscellaneous bacteria" and introduce and supplement functional aerobic bacteria). It is diagnosed that aerobic bacteria in the aerobic section have not become the dominant species, and it is necessary to add supplementary aerobic species to re-cultivate and enrich functional aerobic bacteria.

[0022] In some embodiments of the present application, the above-mentioned control method based on single-cell SOUR data includes the following cases:

[0023] 2-1. The anoxic section is lower than the lower limit of the reference value (principle: low SOUR concentration indicates low activity of facultative bacteria, and the environment is not conducive to the growth of facultative bacteria. Insufficient facultative bacteria leads to insufficient removal of total nitrogen in the anoxic section, resulting in excessive total nitrogen in the effluent). The aerobic section is within the reference value range, and the TN index is greater than 15 mg / L. The DO in the anoxic section is diagnosed as high, and the DO in the anoxic section needs to be controlled at 0.2-0.5 mg / L.

[0024] 2-2. The anoxic section is higher than the upper limit of the reference value (principle: high SOUR concentration indicates high activity of facultative bacteria, but highly active facultative bacteria fail to remove total nitrogen from sewage in the anaerobic section, indicating that non-functional facultative bacteria have become the dominant species among facultative bacteria, and it is necessary to further suppress "miscellaneous bacteria" and introduce and supplement functional facultative bacteria). The aerobic section is within the reference value range, and the TN index is greater than 15 mg / L. It is diagnosed that functional anaerobic bacteria are not dominant in the anoxic section, and it is necessary to add supplementary facultative bacteria to re-cultivate and enrich functional anoxic bacteria.

[0025] 2-3. The aerobic section is lower than the lower limit of the reference value, the anoxic section is within the reference value range, and the effluent COD is greater than 50 mg / L (principle: low SOUR concentration indicates low aerobic bacterial activity, the external environment is not conducive to the growth of aerobic bacteria, and insufficient aerobic bacteria lead to insufficient COD removal in the aerobic section, resulting in effluent COD exceeding the standard). The DO in the aerobic section is diagnosed as low, and the DO in the aerobic section needs to be controlled at 2-3 mg / L;

[0026] 2-4. The aerobic section is higher than the upper limit of the reference value, the anoxic section is within the reference value range, and the effluent COD is greater than 50 mg / L (principle: high SOUR concentration indicates high aerobic bacteria activity, but highly active aerobic bacteria fail to remove COD in the sewage in the anaerobic section, indicating that non-functional aerobic bacteria have become the dominant species among aerobic bacteria, and it is necessary to further suppress "miscellaneous bacteria" and introduce and supplement functional aerobic bacteria). It is diagnosed that aerobic bacteria in the aerobic section have not become the dominant species, and it is necessary to add supplementary aerobic species to re-cultivate and enrich functional aerobic bacteria.

[0027] In some embodiments of the present application, the above-mentioned regulation method based on single-cell ATP+SOUR data includes the following cases:

[0028] 3-1. ATP in the anoxic section is lower than the lower limit, SOUR in the anoxic section is lower than the lower limit (principle: low ATP and SOUR values ​​indicate that the external environment is not in a suitable range), and the TN index is greater than 15 mg / L (implementing the Class A standard plant and station of the urban sewage discharge standard, the same below), and the diagnosis is that the DO in the anoxic section is too high, and the DO in the anoxic section needs to be controlled at 0.2-0.5 mg / L;

[0029] 3-2. ATP in the anoxic section is lower than the lower limit of the reference value, and SOUR in the anoxic section is within the reference value range (principle: low ATP value and normal SOUR value indicate poor functional microbial activity. The reason is that the dissolved oxygen in the pool is not well controlled and cannot be maintained in the high efficiency range of functional facultative bacteria), and the TN index is greater than 15 mg / L, which is diagnosed as high DO. The DO in the anoxic section needs to be controlled at 0.2-0.5 mg / L;

[0030] 3-3. The ATP in the anoxic section is lower than the lower limit of the reference value, and the SOUR in the anoxic section is higher than the upper limit of the reference value (principle: low ATP value and high SOUR value indicate poor functional microbial activity and high microbial activity. Therefore, it can be proved that there are more "miscellaneous bacteria" and insufficient functional bacteria), and the TN index is greater than 15 mg / L, which is diagnosed as the presence of a large number of non-functional bacteria in the aerobic pool. It is necessary to add supplementary facultative bacteria to re-cultivate and enrich the functional facultative bacteria;

[0031] 3-4. Within the ATP reference value range of the hypoxic stage, the SOUR of the hypoxic stage is lower than the lower limit of the reference value, and the TN index is greater than 15 mg / L. Theoretically, this situation will not occur;

[0032] 3-5. Within the ATP reference value range of the anoxic section, the SOUR of the anoxic section is higher than the upper limit of the reference value (principle: the ATP value is normal, the SOUR value is high, indicating that there are more miscellaneous bacteria. The functional bacteria are not in an absolute dominant position and high efficiency range), and the TN index is greater than 15 mg / L. It is diagnosed that there are a large number of non-functional bacteria in the activated sludge, and the external environment of the functional bacteria is poor. The DO of the anoxic section needs to be controlled at 0.2-0.5 mg / L;

[0033] 3-6. In the hypoxic stage, ATP is higher than the upper limit of the reference value, SOUR is lower than the lower limit of the reference value, and the TN index is greater than 15 mg / L. Theoretically, this situation will not occur.

[0034] 3-7. ATP in the anoxic section is higher than the upper limit of the reference value, and SOUR in the anoxic section is within the reference value range (principle: ATP value is high, SOUR value is normal, functional microbial activity is high, but pollutant removal ability is weak, indicating that the functional microbial treatment efficiency is low), and TN index is greater than 15mg / L, it is diagnosed that the functional facultative bacteria in the anoxic section do not occupy an absolute dominant position, and the DO in the anoxic section needs to be controlled within the range of 0.2-0.5mg / L, and the DO concentration needs to be further adjusted;

[0035] 3-8. ATP in the hypoxic section is higher than the upper limit of the reference value, SOUR in the hypoxic section is higher than the upper limit of the reference value (principle: ATP value is high, SOUR value is high, but the pollutant removal capacity is weak, indicating that DO is within a reasonable range, but generally high), and TN index is greater than 15mg / L, which is diagnosed as high DO in the hypoxic section. DO in the hypoxic section needs to be controlled within the range of 0.2-0.5mg / L, as close to 0.2mg / L as possible;

[0036] 3-9. The ATP in the aerobic section is lower than the lower limit of the reference value, the SOUR in the aerobic section is lower than the lower limit of the reference value (principle: low ATP values ​​and low SOUR values ​​indicate that the external environment is not in a suitable range), and the effluent COD is greater than 50 mg / L. It is diagnosed that the DO in the aerobic section is low, and the DO in the aerobic section needs to be controlled at 2-3 mg / L.

[0037] 3-10. The ATP in the aerobic section is lower than the lower limit of the reference value, and the SOUR in the aerobic section is within the reference value range (principle: low ATP value and normal SOUR indicate poor functional microbial activity. The reason is that the dissolved oxygen in the pool is not well controlled and cannot be maintained in the high efficiency range of functional facultative bacteria), and the effluent COD is greater than 50 mg / L. It is diagnosed that DO is not in the appropriate range, and the DO in the anoxic section needs to be controlled at 2-3 mg / L;

[0038] 3-11. The ATP in the aerobic section is lower than the lower limit of the reference value, and the SOUR in the aerobic section is higher than the upper limit of the reference value (principle: low ATP value and high SOUR value indicate poor functional microbial activity and high microbial activity. Therefore, it can be proved that there are more "miscellaneous bacteria" and insufficient functional bacteria), and the effluent COD is greater than 50 mg / L. It is diagnosed that there are a large number of non-functional bacteria in the aerobic pool, and it is necessary to add additional aerobic bacteria to re-cultivate and enrich functional aerobic bacteria;

[0039] 3-12. Within the ATP reference value range of the aerobic section, the SOUR of the aerobic section is lower than the lower limit of the reference value, and the effluent COD is greater than 50 mg / L. Theoretically, this situation will not occur;

[0040] 3-13. Within the ATP reference value range of the aerobic section, the SOUR of the aerobic section is higher than the upper limit of the reference value (principle: the ATP value is normal, the SOUR value is high, indicating that there are more miscellaneous bacteria. The functional bacteria are not in an absolute dominant position and high efficiency range), and the effluent COD is greater than 50 mg / L. It is diagnosed that there are a large number of non-functional bacteria in the activated sludge, and the external environment of the functional bacteria is poor. The DO of the anoxic section needs to be controlled at 2-3 mg / L;

[0041] 3-14. The ATP in the aerobic section is higher than the upper limit of the reference value, the SOUR in the aerobic section is lower than the lower limit of the reference value, and the effluent COD is greater than 50 mg / L. Theoretically, this situation will not occur.

[0042] 3-15. The ATP in the aerobic section is higher than the upper limit of the reference value, and the SOUR in the aerobic section is within the reference value range (principle: the ATP value is high, the SOUR value is normal, the functional microbial activity is high, but the pollutant removal ability is weak, indicating that the functional microbial treatment efficiency is low), and the effluent COD is greater than 50 mg / L. It is diagnosed that the functional facultative bacteria in the anoxic section do not occupy an absolute dominant position. It is necessary to control the DO in the anoxic section within the range of 2-3 mg / L, and further adjust the DO concentration;

[0043] 3-16. The ATP in the aerobic section is higher than the upper limit of the reference value, and the SOUR in the aerobic section is higher than the upper limit of the reference value (principle: the ATP value is high, the SOUR value is high, but the pollutant removal capacity is weak, indicating that the DO is within a reasonable range, but is generally high), and the effluent COD is greater than 50 mg / L. It is diagnosed that the DO in the anoxic section is too high. The DO in the anoxic section needs to be controlled within the range of 2-3 mg / L, as close to 2 mg / L as possible;

[0044] Characterization of ATP on activated sludge:

[0045] ATP is a common component of living cells. It is the main carrier of available energy in cell metabolism and an important product of energy metabolism in organisms. As an indicator of active biomass and microbial activity, ATP can characterize the number of microorganisms and the speed of metabolism during biodegradation. For activated sludge, the concentration of ATP directly reflects the vitality of the microorganisms in the sludge. When the microorganisms in the sludge are active, they will carry out a large amount of metabolic activities, thereby producing a higher ATP concentration. Conversely, if the microorganisms in the sludge are inhibited or die, the ATP concentration will decrease. Therefore, ATP can be used as an important indicator to measure the vitality of microorganisms in activated sludge.

[0046] In practical applications, ATP testing is used to evaluate the impact of sewage on the metabolic activity of activated sludge microorganisms, thereby determining the toxicity or inhibition of sewage. When sludge is affected by toxic substances or difficult-to-degrade substances, microbial cells will rupture and die or be inhibited, resulting in a decrease in the ATP concentration in the cells. By monitoring changes in ATP concentration, sludge poisoning or inhibition can be detected in a timely manner, and appropriate measures can be taken to deal with it.

[0047] Characterization of activated sludge by SOUR:

[0048] SOUR refers to the amount of oxygen consumed by activated sludge per unit time, and it is a key indicator to characterize the metabolic activity of sludge microorganisms. Both the life of microorganisms and the degradation of substrates require a certain amount of oxygen, so SOUR can effectively reflect the metabolic strength of activated sludge microorganisms and the influence of hydraulic load on substrate utilization. At the same time, SOUR is also related to the respiration of sludge microorganisms and the degradation rate of organic matter in sewage, becoming an effective method and means to analyze microbial activity.

[0049] During the operation of the activated sludge process, the change of SOUR can indicate whether there are too many difficult-to-degrade substances in the influent sewage and whether the activated sludge is poisoned. When the difficult-to-degrade substances in the sewage increase, or the activated sludge is poisoned by toxic substances in the sewage, the SOUR value will drop sharply. Therefore, by monitoring the changes in SOUR, problems in the sewage treatment process can be discovered in time, and corresponding measures can be taken to adjust and optimize.

[0050] Beneficial effects of the present invention:

[0051] 1. This application method introduces the core of the activated sludge system - microorganisms - into the daily operation and management of sewage treatment facilities, which has great practical significance.

[0052] 2. The method of this application uses APT / SOUR data and the COD value and TN value of sewage effluent to directly reflect the state of microorganisms, which is more accurate than traditional water quality indicators.

[0053] 3. This application method provides a basis and reference for the subsequent fine-tuning of the sewage treatment system.

[0054] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of the present application, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. DETAILED DESCRIPTION

[0055] The following non-limiting examples are provided to illustrate the present application.

[0056] Embodiment 1:

[0057] Taking a sewage treatment plant as an example, the method is:

[0058] S1. Install ATP online detectors in the treatment pools of the anaerobic, anoxic and aerobic sections of the sewage treatment system; install SOUR online detectors in the treatment pools of the anoxic and aerobic sections, and set the sampling port of the detector in the middle of each section of the pool to obtain the test data;

[0059] S2. Compare and preliminarily analyze the ATP detection data and SOUR data of each treatment pool with the reference values, and adjust the correct installation of the equipment; the reference values ​​of ATP / SOUR of each section are: ATP of anaerobic section is 100-600nM, ATP of anoxic section is 300-600nM, ATP of aerobic section is 400-650nM, SOUR of anoxic section is 0.5-2.5mgO2 / (gMLSS·h), and SOUR of aerobic section is 0.8-2.0mgO2 / (gMLSS·h).

[0060] S3. After adjustment, the ATP and / or SOUR data of each section are compared with the reference value and the water quality data of the sewage outlet to draw conclusions and regulate the operation of the sewage treatment system.

[0061] Through the ATP / SOUR online monitoring equipment deployed in a sewage treatment plant, the relevant data indicators of the sewage treatment plant are obtained as shown in Table 1 and Table 2:

[0062] Table 1

[0063]

[0064]

[0065] ATP unit: nM, SOUR unit: mgO2 / (gMLSS·h)

[0066] Table 2

[0067] time Outlet TN Outlet COD Anaerobic DO DO in hypoxic period Aerobic DO 6.27 0:00 18 48 0.1 0.5 2.5 6.27 4:00 20 47 0.1 0.5 2.5 6.27 8:00 21 48 0.1 0.5 2.2 6.27 12:00 19 46 0.2 0.4 2.3 6.27 16:00 16 40 0.1 0.5 2.2 6.27 20:00 18 40 0.1 0.5 2.8 6.27 24:00 15 35 0.1 0.5 2.5 6.28 0:00 16 46 0.1 0.6 2.7 6.28 4:00 17 45 0.1 0.5 2.6 6.28 8:00 18 41 0.1 0.6 2.6 6.28 12:00 18 42 0.1 0.5 2.6 6.28 16:00 19 40 0.1 0.6 2.7 6.28 20:00 18 48 0.1 0.6 2.6 6.28 24:00 20 38 0.1 0.6 2.6

[0068] TN unit: mg / L, COD unit: mg / L, DO unit: mg / L

[0069] From the analysis of Table 1 and Table 2, we can see that the ATP and SOUR values ​​in the hypoxic section are too high (exceeding the reference value), and the TN removal effect is weak. According to the diagnostic room adjustment method, the DO concentration in the hypoxic pool needs to be further reduced. According to the guidance of the diagnostic system, the DO in the hypoxic section was adjusted on June 28, and the DO was adjusted to 0.2-0.3 mg / L. The monitoring data obtained after 2 days are shown in Table 3 and Table 4:

[0070] Table 3

[0071] time Anaerobic ATP Hypoxic ATP SOURCE Aerobic ATP Aerobic SOUR 6.30 0:00 255 590 2.2 483 1.8 6.30 4:00 280 552 2.1 442 1.8 6.30 8:00 270 562 2.0 493 1.7 6.30 12:00 266 569 2.1 425 1.7 6.30 16:00 291 531 2.4 449 1.1 6.30 20:00 283 582 2.3 490 1.5 6.30 24:00 299 602 2.1 503 1.3

[0072] Table 4

[0073] time Outlet TN Outlet COD Anaerobic DO DO in hypoxic period Aerobic DO 6.30 0:00 13 42 0.1 0.2 2.6 6.30 4:00 11 42 0.2 0.3 2.5 6.30 8:00 10 49 0.1 0.2 2.5 6.30 12:00 11 43 0.1 0.3 2.5 6.30 16:00 12 40 0.1 0.3 2.6 6.30 20:00 10 35 0.2 0.2 2.4 6.30 24:00 9 38 0.2 0.2 2.5

[0074] From the data analysis, it can be found that after adjustment, the DO concentration in the anoxic section is close to 0.2 mg / L, the ATP and SOUR indicators in the anoxic section are reduced to the normal range, and the total nitrogen in the effluent of the sewage treatment system is also reduced to 15 mg / L, which is within the discharge standard range, indicating that this control method has a good control effect.

[0075] Embodiment 2:

[0076] Another sewage treatment plant was regulated using the method of Example 1

[0077] By deploying ATP / SOUR online monitoring equipment in a sewage treatment plant, the relevant data indicators of the initial sewage treatment plant are shown in Table 5 and Table 6:

[0078] Table 5

[0079] time Anaerobic ATP Hypoxic ATP SOURCE Aerobic ATP Aerobic SOUR 11.5 0:00 190 425 1.2 350 2.6 11.5 4:00 183 419 1.6 361 2.5 11.5 8:00 210 443 1.5 372 2.3 11.5 12:00 216 482 1.5 369 2.5 11.5 16:00 186 493 1.3 340 2.4 11.5 20:00 199 448 1.8 390 2.1 11.5 24:00 203 462 1.6 328 2.4 11.6 0:00 180 447 1.4 318 2.6 11.6 4:00 173 488 1.6 350 2.4 11.6 8:00 186 475 1.3 362 2.6 11.6 12:00 210 486 1.3 380 2.3 11.6 16:00 224 493 1.8 391 2.2 11.6 20:00 203 503 1.2 359 2.3 11.6 24:00 169 468 1.0 377 2.4

[0080] ATP unit: nM, SOUR unit: mgO2 / (gMLSS·h)

[0081] Table 6

[0082]

[0083]

[0084] TN unit: mg / L, COD unit: mg / L, DO unit: mg / L

[0085] From the analysis of the data and references in Tables 5 and 6, it can be seen that the ATP value in the aerobic section is low (lower than the reference value), the SOUR value is high (exceeding the reference value), and the COD removal effect is weak. According to the diagnostic room adjustment method, functional aerobic bacteria need to be added. According to the guidance of the diagnostic system, on November 6, 1.5 tons of concentrated sludge from the aerobic pool of the nearby sewage plant was added to the aerobic pool, and the daily sewage treatment volume was reduced to one-third of the normal operation. At the same time, the sludge discharge from the aerobic pool was increased. The monitoring data obtained after 10 days are shown in Tables 7 and 8:

[0086] Table 7

[0087] time Anaerobic ATP Hypoxic ATP SOURCE Aerobic ATP Aerobic SOUR 11.16 0:00 200 452 1.6 415 1.9 11.16 4:00 206 412 1.5 421 1.8 11.16 8:00 198 448 1.5 431 1.8 11.16 12:00 230 490 1.6 448 1.6 11.16 16:00 224 450 1.4 428 1.8 11.16 20:00 199 426 1.4 432 1.9 11.16 24:00 201 456 1.5 409 1.7

[0088] Table 8

[0089]

[0090]

[0091] From the data analysis, it can be seen that after the supplementary addition of functional aerobic bacteria in the aerobic pool, the ATP and SOUR indicators in the aerobic section have returned to the normal range. At the same time, the COD of the effluent from the sewage treatment system has also dropped to the discharge standard range of 50mg / L.

[0092] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0093] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for regulating sewage treatment facilities based on microbial activity indicators, characterized in that: The following steps are involved: S1. Install ATP online detector and / or SOUR online detector in each treatment tank of the sewage treatment system to obtain the test data; S2. Compare and preliminarily analyze the ATP test data and SOUR data of each treatment pool with the reference value, and adjust the correct installation of the equipment; S3. After adjustment, the ATP and / or SOUR data of each section are compared with the reference value and the water quality data of the sewage outlet to draw conclusions and regulate the operation of the sewage treatment system.

2. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 1, characterized in that: The specific installation scheme of the ATP online detector and the SOUR online detector in step S1 is: installing the ATP online detector in the treatment pools of the anaerobic section, anoxic section, and aerobic section of the sewage treatment system; installing the SOUR online detector in the treatment pools of the anoxic section and aerobic section, and the sampling port of the detector is set in the middle position of each section of the pool.

3. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 2, characterized in that: The reference values ​​of ATP / SOUR in each section of the S2 step are: ATP in the anaerobic section is 100-600 nM, ATP in the anoxic section is 300-600 nM, ATP in the aerobic section is 400-650 nM, SOUR in the anoxic section is 0.5-2.5 mgO2 / (gMLSS·h), SOUR in the aerobic section is 0.8-2.0 mgO2 / (gMLSS·h).

4. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 3, characterized in that: The water quality data at the sewage outlet in step S3 includes the COD value and / or TN value of the outlet water.

5. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 4, characterized in that: The control method of the S3 step includes the cases based on single-pool ATP data, single-pool SOUR data and single-pool ATP+SOUR data.

6. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 5, characterized in that: The control method based on single pool ATP data includes the following situations: 1-1. If the anaerobic section is lower than the lower limit of the reference value, the anoxic section and the aerobic section are within the reference value range, and the effluent COD is greater than 50 mg / L, it is judged that the anaerobic section does not maintain a strict anaerobic state. The control method is to control the DO concentration of the anaerobic section to be lower than 0.2 mg / L; 1-2. If the anaerobic section is higher than the upper limit of the reference value, the anoxic section and the aerobic section are within the reference value range, and the effluent COD is greater than 50 mg / L, it is judged that the anaerobic section is not dominant. The control method is to supplement anaerobic bacteria, re-cultivate and enrich functional anaerobic bacteria; 1-3. If the DO in the anoxic section is lower than the lower limit of the reference value, the anaerobic section and the aerobic section are within the reference value range, and the TN index is greater than 15 mg / L, it is judged that the facultative bacteria in the anoxic section are not dominant; the control method is to control the DO in the anoxic section at 0.2-0.5 mg / L; 1-4. If the anoxic section is higher than the upper limit of the reference value, the anaerobic section and the aerobic section are within the reference value range, and the TN index is greater than 15 mg / L, it is judged that the functional anaerobic bacteria in the anoxic section are not dominant. The control method is to add supplementary facultative bacteria to re-cultivate and enrich the functional anoxic bacteria; 1-5. If the aerobic section is lower than the lower limit of the reference value, the anaerobic section and the anoxic section are within the reference value range, and the effluent COD is greater than 50 mg / L, it is judged that the DO of the aerobic section is low. The control method is to control the DO of the aerobic section at 2-3 mg / L. 1-6. If the aerobic section is higher than the upper limit of the reference value, the anaerobic section and the anoxic section are within the reference value range, and the effluent COD is greater than 50 mg / L, it is judged that the aerobic bacteria in the aerobic section have not become the dominant species. The control method is to add supplementary aerobic species to re-cultivate and enrich functional aerobic bacteria.

7. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 5, characterized in that: The control method based on single pool SOUR data includes the following situations: 2-1. If the DO in the anoxic section is lower than the lower limit of the reference value, the DO in the aerobic section is within the reference value range, and the TN index is greater than 15 mg / L, it is judged that the DO in the anoxic section is too high. The control method is to control the DO in the anoxic section to 0.2-0.5mg / L; 2-2. The anoxic section is higher than the upper limit of the reference value, the aerobic section is within the reference value range, and the TN index is greater than 15 mg / L. It is judged that the functional anaerobic bacteria in the anoxic section are not dominant. The control method is to add supplementary facultative bacteria to re-cultivate and enrich the functional anoxic bacteria; 2-3. The aerobic section is lower than the lower limit of the reference value, the anoxic section is within the reference value range, and the effluent COD is greater than 50 mg / L. It is judged that the DO of the aerobic section is low. The control method is to control the DO of the aerobic section at 2-3 mg / L. 2-4. The aerobic section is higher than the upper limit of the reference value, the anoxic section is within the reference value range, and the effluent COD is greater than 50 mg / L. It is judged that the aerobic bacteria in the aerobic section have not become the dominant species. The control method is to add supplementary aerobic species to re-cultivate and enrich functional aerobic bacteria.

8. A method for regulating sewage treatment facilities based on microbial activity indicators according to claim 5, characterized in that: The control method based on single pool ATP+SOUR data includes the following situations: 3-1. In the hypoxic section, ATP is lower than the lower limit of the reference value, SOUR is lower than the lower limit, and the TN index is greater than 15 mg / L. It is judged that DO in the hypoxic section is too high. The control method is to control DO in the hypoxic section at 0.2-0.5 mg / L. 3-2. In the hypoxic stage, ATP is lower than the lower limit of the reference value, SOUR is within the reference value range, and TN index is greater than 15 mg / L, which means DO is too high. The control method is to control DO in the hypoxic stage at 0.2-0.5 mg / L. 3-3. ATP in the anoxic stage is lower than the lower limit of the reference value, SOUR in the anoxic stage is higher than the upper limit of the reference value, and the TN index is greater than 15 mg / L. It is judged that there are a large number of non-functional bacteria in the aerobic pool. The control method is to add supplementary facultative bacteria to re-cultivate and enrich functional facultative bacteria; 3-4. Within the ATP reference value range of the hypoxic stage, the SOUR of the hypoxic stage is lower than the lower limit of the reference value, and the TN index is greater than 15 mg / L. Theoretically, this situation will not occur; 3-5. Within the ATP reference value range of the anoxic section, the SOUR of the anoxic section is higher than the upper limit of the reference value, and the TN index is greater than 15 mg / L. It is judged that there are a large number of non-functional bacteria in the activated sludge, and the external environment of the functional bacteria is poor. The control method is to control the DO of the anoxic section at 0.2-0.5 mg / L; 3-6. In the hypoxic stage, ATP is higher than the upper limit of the reference value, SOUR is lower than the lower limit of the reference value, and the TN index is greater than 15 mg / L. Theoretically, this situation will not occur. 3-7. ATP in the anoxic section is higher than the upper limit of the reference value, SOUR in the anoxic section is within the reference value range, and the TN index is greater than 15 mg / L. It is judged that the functional facultative bacteria in the anoxic section do not occupy an absolute dominant position. The adjustment method is to control the DO in the anoxic section within the range of 0.2-0.5 mg / L. 3-8. ATP in the hypoxic stage is higher than the upper limit of the reference value, SOUR in the hypoxic stage is higher than the upper limit of the reference value, and the TN index is greater than 15 mg / L. It is judged that DO in the hypoxic stage is too high and needs to be controlled within the range of 0.2-0.5 mg / L. 3-9. The ATP in the aerobic section is lower than the lower limit of the reference value, the SOUR in the aerobic section is lower than the lower limit of the reference value, and the effluent COD is greater than 50 mg / L. It is judged that the DO in the aerobic section is too low. The adjustment method is to control the DO in the aerobic section at 2-3 mg / L. 3-10. If the ATP in the aerobic section is lower than the lower limit of the reference value, the SOUR in the aerobic section is within the reference value range, and the effluent COD is greater than 50 mg / L, it is judged that the DO is not in the appropriate range. The adjustment method is to control the DO in the anoxic section at 2-3 mg / L. 3-11. If the ATP in the aerobic section is lower than the lower limit of the reference value, the SOUR in the aerobic section is higher than the upper limit of the reference value, and the effluent COD is greater than 50 mg / L, it is judged that there are a large number of non-functional bacteria in the aerobic pool. The adjustment method is to add supplementary aerobic bacteria to re-cultivate and enrich functional aerobic bacteria; 3-12. Within the ATP reference value range of the aerobic section, the SOUR of the aerobic section is lower than the lower limit of the reference value, and the effluent COD is greater than 50 mg / L. Theoretically, this situation will not occur; 3-13. Within the ATP reference value range of the aerobic section, the SOUR of the aerobic section is higher than the upper limit of the reference value, and the effluent COD is greater than 50 mg / L. It is judged that there are a large number of non-functional bacteria in the activated sludge, and the external environment of the functional bacteria is poor. The adjustment method is to control the DO of the anoxic section at 2-3 mg / L; 3-14. The ATP in the aerobic section is higher than the upper limit of the reference value, the SOUR in the aerobic section is lower than the lower limit of the reference value, and the effluent COD is greater than 50 mg / L. Theoretically, this situation will not occur. 3-15. The ATP in the aerobic section is higher than the upper limit of the reference value, the SOUR in the aerobic section is within the reference value range, and the effluent COD is greater than 50 mg / L. It is judged that the functional facultative bacteria in the anoxic section do not occupy an absolute dominant position. The adjustment method is to control the DO in the anoxic section within the range of 2-3 mg / L. 3-16. The ATP in the aerobic section is higher than the upper limit of the reference value, the SOUR in the aerobic section is higher than the upper limit of the reference value, and the effluent COD is greater than 50 mg / L. It is judged that the DO in the anoxic section is too high. The adjustment method is to control the DO in the anoxic section within the range of 2-3 mg / L.

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