Method and device for reinforced degradation of bisphenol substances by nutrition-restricted domestication flora

Abstract

The invention provides a method and a device for reinforced degradation of bisphenol substances by nutrition-restricted domesticated flora, and belongs to the technical field of sewage treatment. Comprising the following steps: S1, domesticating sludge by adopting nutrition limitation, and controlling sludge concentration and sludge treatment time; and S2, adding the nutrition-restricted domesticated sludge obtained in the step S1 into a sludge treatment system, and controlling the adding proportion and the adding period of the nutrition-restricted domesticated sludge to achieve the effect of improving the capacity of the system for degrading bisphenol pollutants. According to the method disclosed by the invention, bisphenol pollutants in the sludge can be efficiently degraded at a relatively low treatment cost, so that a technical support which gives consideration to economic benefits and environmental safety is provided for sludge treatment.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewage treatment, and more particularly relates to a method and device for strengthening degradation of bisphenol substances by using a nutrient-limited domesticated bacterial population. BACKGROUND

[0002] Bisphenol pollutants in sewage are a kind of environmental endocrine disruptors widely used in industrial production, among which bisphenol A (BPA) is the most typical representative and is commonly found in consumer goods such as plastic products, epoxy resins, and heat-sensitive paper. In recent years, as the use of bisphenol A has been restricted in many countries, the use of its substitutes (such as bisphenol S (BPS) and the like) has increased year by year. These substances have similar chemical structures and potential toxicity; however, the “New Pollutant Control Action Plan” issued by the state clearly classifies bisphenol pollutants (BPs) and other endocrine disruptors with significant hazards as new pollutants. As typical new pollutants, BPs are widely used in human production and daily life and enter sewage treatment plants through sewage pipes.

[0003] More than 70% of sewage treatment plants worldwide use activated sludge method to treat wastewater containing BPs, but due to the chemical stability of BPs and the single metabolic pathway of traditional processes, the removal efficiency is generally less than 30%; it has also been reported that the concentration of BPs in the effluent of sewage treatment plants even exceeds 200 ng / L, which has become the main source of the widespread detection of BPs in marine, lake and river waters.

[0004] Therefore, it is necessary to break through the technical bottlenecks of traditional sewage treatment technology and develop new BPs sewage treatment technology to ensure that the water ecological safety is continuously improved. SUMMARY

[0005] Traditional biological enhancement technology can significantly improve the BPs degradation efficiency of sludge, but there are technical bottlenecks such as microbial function attenuation and significant environmental impact on the survival rate of bacterial agents. In view of this problem, the purpose of the present application is to provide a method for strengthening degradation of bisphenol pollutants by using a nutrient-limited functional bacterial population to domesticate sludge. This biological enhancement method for removing bisphenol pollutants not only uses traditional biological enhancement methods, but also uses a method of adding a nutrient-limited functional bacterial population to sludge to accelerate the rate of sludge removing bisphenol pollutants, improve the time efficiency of sludge degrading bisphenol substances, save costs, and reduce the operation difficulty of operators.

[0006] To solve the above problems, the technical scheme adopted by the present application is as follows:

[0007] The application provides a method for enhancing degradation of bisphenol substances by a nutrient-limited acclimated bacterial population, comprising the following steps: S1, taking part of activated sludge from a sludge treatment system, and carrying out aeration treatment for at least two different times without adding any nutrient substrate, wherein the aeration treatment time is 24-1200 h, and the dissolved oxygen in the aeration process is greater than 2 mg / L, to obtain nutrient-limited acclimated sludge, wherein the nutrient-limited acclimated sludge comprises sludge of at least two culture times; and S2, adding the nutrient-limited acclimated sludge into the sludge treatment system, and adjusting the adding proportion of the nutrient-limited acclimated sludge according to the concentration of bisphenol pollutants in the sludge treatment system to degrade the bisphenol pollutants. By controlling the adding proportion and adding cycle of the nutrient-limited acclimated sludge, the ability of the system to degrade bisphenol pollutants can be improved. It should be noted that the aeration treatment in the aeration tank without adding any substrate means that no exogenous nutrient substrate (such as carbon, nitrogen, phosphorus, etc.) is added. However, the specific reaction substrate also includes bisphenol pollutants, and the concentration is divided into three types: less than 1 μg / L, less than 100 μg / L, and greater than 1 mg / L.

[0008] In the step S1, the aeration treatment time is 24-1200 h, and the dissolved oxygen in the aeration process is greater than 2 mg / L. If the aeration time is too short, the microbial community structure is unstable, the dominant population cannot be effectively established, and the impact load resistance is poor. If the aeration time is too long, the sludge loses activity, the treatment efficiency decreases, and the energy consumption increases sharply.

[0009] In the step S1, the inoculation concentration of the activated sludge is preferably 6000-12000 mg / L. If the sludge concentration is too low, the volume of the sludge aeration tank is required to be larger, which causes unnecessary waste. If the sludge concentration is too high, the viscosity of the mixed liquid increases, the oxygen diffusion to the microorganisms is hindered, local anoxia occurs, and the sludge concentration is too high, which requires enhanced aeration and stirring intensity, so that the energy consumption increases significantly.

[0010] In the step S1, the aeration treatment time is 24-72 h, 72-168 h, and 168-1200 h, respectively, when the activated sludge is subjected to aeration treatment for three different times.

[0011] Since the sludge treatment system cannot completely remove the bisphenol pollutants in the sludge in the step S2, the nutrient-limited acclimated sludge in the step S1 needs to be added to the step S2. In the step S2, the nutrient-limited acclimated sludge comprises sludge of three culture times, and the mixing ratio is 1:1:1.

[0012] Preferably, in step S2, the adding ratio of the nutrient-limited domesticated sludge is adjusted according to the concentration of the bisphenol pollutants, and the adjusting specifically comprises: when the maximum concentration of the bisphenol pollutants is less than 1 μg / L, the volume ratio of the nutrient-limited domesticated sludge to the activated sludge in the sludge treatment system is 1:9; when the maximum concentration of the bisphenol pollutants is less than 100 μg / L, the volume ratio of the nutrient-limited domesticated sludge to the activated sludge in the sludge treatment system is 2:8; when the maximum concentration of the bisphenol pollutants is greater than 1 mg / L, the volume ratio of the nutrient-limited domesticated sludge to the activated sludge in the sludge treatment system is 3:7. The bisphenol pollutants include bisphenol A and bisphenol S.

[0013] Preferably, in step S2, the adding period of the nutrient-limited domesticated sludge is also adjusted according to the concentration of the bisphenol pollutants, and the adding period specifically comprises: when the removal rate of the bisphenol pollutants decreases to 50%, the nutrient-limited domesticated sludge is added again.

[0014] The application further provides a device for enhancing degradation of bisphenol substances by a nutrient-limited domesticated bacterial community, which comprises, in sequence, an aeration tank, a water inlet tank, a sludge treatment system and a water outlet tank, wherein the aeration tank is provided with a sludge enrichment pipe, the aeration tank is used for aeration treatment of activated sludge, the sludge enrichment pipe is used for input of the obtained nutrient-limited domesticated sludge into the sludge treatment system, the water inlet tank is provided with a water inlet pipe, the water inlet tank is mixed with bisphenol pollutants with concentrations of less than 1 μg / L, less than 100 μg / L and greater than 1 mg / L, respectively, and then the water inlet pipe is used for input of sewage containing the bisphenol pollutants into the sludge treatment system, and the sludge treatment system is provided with a water outlet pipe, the sludge treatment system is used for sedimentation, and then the water outlet pipe is used for input of supernatant into the water outlet tank.

[0015] Further, the sludge treatment system is further provided with a stirring device and an aeration device, the stirring device is immersed in sewage in the sludge treatment system, and the aeration device is arranged at the bottom of the sludge treatment system.

[0016] Further, a sampling port is further arranged on the side wall of the sludge treatment system, and the sampling port is used for sampling water from the sludge treatment system.

[0017] Further, the sludge treatment system is further provided with a DO detector, and the DO detector is used for real-time monitoring of dissolved oxygen.

[0018] The traditional biological reinforcement method is generally to add specific functional bacteria with high degradation efficiency to the activated sludge system, and to rely on the inherent metabolic capacity of the exogenous microorganisms to enhance the degradation capacity of the system to the target pollutants. However, in this process, the competition between the exogenous bacteria and the indigenous microorganisms often leads to functional attenuation, and the survival rate of the bacteria is significantly affected by the fluctuation of environmental parameters, which increases the labor and financial costs, and the degradation effect is not ideal. Compared with the traditional biological reinforcement method, the beneficial effects of the present application are:

[0019] (1) In the process of domesticating functional bacteria to reinforce sludge under nutrient-limited conditions, the aeration time is controlled at 24-1200h. If the aeration time is too short, the microbial community structure is unstable, the dominant population cannot be effectively established, and the impact load resistance is poor. If the aeration time is too long, the sludge loses activity, the treatment efficiency decreases, and the energy consumption increases sharply. In order to improve the metabolic activity of aerobic bacteria, the dissolved oxygen in the aeration process should be greater than 2mg / L.

[0020] (2) Since a single sludge treatment system cannot achieve the highest removal efficiency of bisphenol pollutants in wastewater, the present application also adds the sludge domesticated under nutrient-limited conditions to the activated sludge. The nutrient-limited domesticated sludge added to the sludge system is a mixture of three types of sludge with different cultivation times, and the mixing ratio is 1:1:1.

[0021] (3) In the process of sludge treatment system, the added nutrient-limited domesticated sludge is adjusted according to the concentration of bisphenol pollutants, specifically as follows: when the highest concentration of bisphenol pollutants is less than 1μg / L, the ratio of nutrient-limited domesticated sludge to activated sludge is 1:9; when the highest concentration of bisphenol pollutants is less than 100μg / L, the ratio of nutrient-limited domesticated sludge to activated sludge is 2:8; when the highest concentration of bisphenol pollutants is greater than 1mg / L, the ratio of nutrient-limited domesticated sludge to activated sludge is 3:7, which can ensure that the removal effect of bisphenol pollutants reaches an optimal state during the addition of nutrient-limited domesticated sludge, with an average removal rate of about 90%.

[0022] (4) The method for reinforcing degradation of bisphenol substances by nutrient-limited domesticated bacteria can effectively achieve the further control of the addition ratio and addition cycle of the nutrient-limited domesticated sludge by adding the nutrient-limited domesticated sludge to the activated sludge, and improve the ability of the sludge to degrade bisphenol pollutants. BRIEF DESCRIPTION OF DRAWINGS

[0023] One or more embodiments are illustrated by way of example in the figures that form a part of this patent document, and in which like reference numbers indicate corresponding elements in the drawings, its use in the specification serves to maintain the clear understanding of the illustrative examples, and unless otherwise indicated, the use of the drawings in the specification does not constitute a limitation of the embodiments.

[0024] Figure 1A schematic diagram of the method for using the nutrient-limited domesticated functional microbial community to enhance sludge degradation of bisphenol pollutants according to the present application.

[0025] In the figure: 1-aeration tank, 2-influent tank, 3-sludge treatment system, 4-effluent tank, 5-enriched sludge pipe, 6-influent pipe, 7-effluent pipe, 8-agitation device, 9-aeration device, 10-sampling port, 11-DO detector. DETAILED DESCRIPTION

[0026] In order to improve the performance of activated sludge system in degrading bisphenol pollutants in wastewater, the exogenous microbial community dosing method in biological enhancement technology has gradually attracted attention. Traditional biological enhancement often uses the method of directly adding functional bacteria, but the competition between exogenous bacteria and indigenous microorganisms often leads to functional attenuation, and the survival rate of bacterial agents is significantly affected by environmental parameter fluctuations.

[0027] The inventors found that the use of nutrient-limited sludge dosing enhancement strategy has unique advantages. By introducing pre-oligotrophic stress domesticated aerobic sludge into the activated sludge system, the high-activity microorganisms selected by starvation stress can quickly adapt to the new environment. This starvation pre-adaptation treatment promotes the formation of stress memory effect in microorganisms, significantly enhances their metabolic activity and substrate affinity, and the quorum sensing mechanism induced by oligotrophic environment optimizes the microbial community structure, so that after dosing, the dominant degradation function can be quickly established through interspecific cooperation. Compared with the conventional bacterial agent dosing method, this method not only shortens the niche occupation period of functional microbial community, but also enhances the environmental resistance of microorganisms through stress pre-adaptation, effectively prolonging the duration of high-efficiency degradation of the system.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the application belongs; the term "and / or" used herein includes any and all combinations of one or more of the associated listed items.

[0029] Unless otherwise specified in the examples, the conventional conditions or the conditions recommended by the manufacturer were used. The reagents or instruments used were not specified by the manufacturer, but were conventional products that could be purchased on the market.

[0030] As used herein, the term "about" is used to provide flexibility to a given term, measurement, or value. The degree of flexibility of a particular variable can be readily determined by one skilled in the art.

[0031] Concentration, amount, and other numerical data may be presented in range format herein. It should be understood that such range format is used solely for convenience and brevity and should be flexibly interpreted to include not only the values ​​explicitly stated as the limits of the range, but also all individual values ​​or subranges encompassed within the range, as if each value and subrange were explicitly stated. For example, a range of values ​​from about 2 to about 6 should be interpreted to include not only the explicitly stated limits of 2 to 2, but also individual numbers (such as 3, 4, 5) and subranges (such as 3 to 5, etc.). The same principle applies to ranges that describe only a single value, such as "less than about 4," which should be interpreted to include all the aforementioned values ​​and ranges. Furthermore, this interpretation should apply regardless of the breadth of the range or characteristic described.

[0032] The present invention will be further described below with reference to specific embodiments.

[0033] This invention provides a method and apparatus for enhancing the degradation of bisphenol A by nutrient-limited domesticated microbial communities. The system is as follows: Figure 1 As shown, the system includes an inlet tank 2, a sludge treatment system 3, and an outlet tank 4 connected in sequence. The sludge treatment system 3 is also connected to an aeration tank 1. The inlet tank 2 is connected to the sludge treatment system 3 via an inlet pipe 6, the sludge treatment system 3 is connected to the outlet tank 4 via an outlet pipe 7, and the sludge treatment system 3 is connected to the aeration tank 1 via a sludge enrichment pipe 5. During operation, the nutrient-limiting acclimated sludge treated by aeration in the aeration tank 1 is input into the sludge treatment system 3 via the sludge enrichment pipe 5. Bisphenolic pollutants with a concentration of 0.1 μg / L to 5 mg / L are mixed in the inlet tank 2 and then input into the sludge treatment system 3 via the inlet pipe 6. It should be understood that in actual wastewater treatment processes, the concentration of bisphenolic pollutants is already low. Therefore, to demonstrate the treatment effect of the present invention, additional bisphenolic pollutants are mixed in. After the sludge treatment system has settled for a period of time, the supernatant is output to the outlet tank 4 via the outlet pipe 7. The sludge treatment system 3 is also equipped with a stirring device 8 and an aeration device 9. The stirring device 8 is immersed in the wastewater, and the aeration device 9 is located at the bottom. The mixing of nutrient-limiting acclimated sludge with water containing bisphenol pollutants in the sludge treatment system 3 is achieved through the stirring device 8 and the aeration device 9. A sampling port 10 is also provided on the side wall of the sludge treatment system 3, and sampling and analysis are performed through the sampling port 10 throughout the reaction process. In addition, a DO detector 11 is installed in the sludge treatment system 3, and dissolved oxygen is monitored in real time through the DO detector 11.

[0034] After the activated sludge undergoes a complete reaction in the inlet tank 2, sludge treatment system 3, and effluent tank 4, the nutrient-limiting acclimated sludge, which has been aerated in the aeration tank 1, is then fed into the sludge treatment system 3 for further reaction, thus removing bisphenol pollutants from the wastewater.

[0035] It should be noted that, first, the aeration time of the aeration tank 1 is controlled in the range of 24-1200h, and too short aeration time leads to unstable microbial community structure, and the dominant population cannot be effectively established, and the impact load resistance is poor; too long aeration time will make the sludge lose activity, the treatment efficiency decreases, the energy consumption increases sharply, and the removal efficiency of bisphenol pollutants is reduced. Second, the sludge concentration in the aeration tank 1 is controlled in the range of 6000-12000mg / L, and too high sludge concentration will increase the viscosity of the mixed liquid, hinder the diffusion of oxygen to the microorganisms, cause local anoxia, and too high sludge concentration requires to increase the aeration and stirring intensity, which makes the energy consumption increase significantly. Third, the dissolved oxygen in the aeration tank 1 is greater than 2mg / L, and too low dissolved oxygen will lead to a significant decrease in the metabolic activity of aerobic bacteria.

[0036] Example 1

[0037] In this embodiment, a method and device for enhancing degradation of bisphenol substances by nutrient-limited domesticated bacteria are provided, including the following steps: the initial concentration of sludge is 8000mg / L, the concentration of bisphenol A is 0.8μg / L, the concentration of bisphenol S is 0.5μg / L, the sludge enters the aeration tank for aeration treatment, the carbon source is interrupted during the aeration treatment, the aeration time is 24h, 72h and 168h, the mixing ratio of the nutrient-limited domesticated sludge is 1:1:1, the dissolved oxygen in the aeration tank is 2.5mg / L, the nutrient-limited domesticated sludge after aeration treatment is input into the sludge treatment system, the ratio of the added nutrient-limited domesticated sludge to activated sludge is 1:9, and the addition cycle is taken as the removal rate of bisphenol A and bisphenol S decreases to 50%; sampling and analysis are performed every 24h during the operation of the sludge treatment system. The experimental results show that, in the first 10 days, the removal efficiency of bisphenol A decreases from 95% to 88%, and the concentration of treated bisphenol A is only 0.04μg / L, the removal efficiency of bisphenol S decreases from 89% to 82%, and the concentration of treated bisphenol S is only 0.055μg / L, and the system is still in a stable state; while in the traditional biological enhancement method, the removal efficiency of bisphenol A decreases from 68% to 42% in the first 10 days, and the concentration of treated bisphenol A reaches 0.256μg / L, the removal efficiency of bisphenol S decreases from 52% to 30%, and the concentration of treated bisphenol S reaches 0.24μg / L.

[0038] Example 2

[0039] The embodiment provides a method and device for enhancing degradation of bisphenol substances by using nutrient-limited domesticated bacteria, and comprises the following steps: the initial concentration of sludge is 7500 mg / L, the concentration of bisphenol A is 80 μg / L, the concentration of bisphenol S is 60 μg / L, the sludge is introduced into an aeration tank for aeration treatment, the carbon source is interrupted during the aeration treatment, the aeration time is 24 h, 72 h and 168 h, the mixing ratio of the nutrient-limited domesticated sludge is 1:1:1, the dissolved oxygen in the aeration tank is 3 mg / L, the nutrient-limited domesticated sludge after the aeration treatment is introduced into a sludge treatment system, the ratio of the nutrient-limited domesticated sludge to the activated sludge is 2:8, and the adding cycle is taken as when the removal rates of bisphenol A and bisphenol S reduce to 50%; the sludge treatment system is sampled and analyzed every 24 h during the operation. The experimental results show that the half-life of the degradation of bisphenol A is 3.5 h, the half-life of the degradation of bisphenol S is 9.8 h; and the half-life of the degradation of bisphenol A by using the traditional biological enhancement method is 10.2 h, and the half-life of the degradation of bisphenol S is 28.5 h.

[0040] Embodiment 3

[0041] The embodiment provides a method and device for enhancing degradation of bisphenol substances by using nutrient-limited domesticated bacteria, and comprises the following steps: the initial concentration of sludge is 12000 mg / L, the concentration of bisphenol A is 5 mg / L, the concentration of bisphenol S is 3 mg / L, the sludge is introduced into an aeration tank for aeration treatment, the carbon source is interrupted during the aeration treatment, the aeration time is 24 h, 72 h and 1200 h, the mixing ratio of the nutrient-limited domesticated sludge is 1:1:1, the dissolved oxygen in the aeration tank is 4 mg / L, the nutrient-limited domesticated sludge after the aeration treatment is introduced into a sludge treatment system, the ratio of the nutrient-limited domesticated sludge to the activated sludge is 3:7, and the adding cycle is taken as when the removal rates of bisphenol A and bisphenol S reduce to 50%. The experimental results show that after 24 h of reaction, the peak removal efficiency of bisphenol A is 98%, and the peak removal efficiency of bisphenol S is 91%; and after 24 h of reaction by using the traditional biological enhancement method, the peak removal efficiency of bisphenol A is 41%, and the peak removal efficiency of bisphenol S is 18%.

[0042] The experiment proves that the removal efficiency of bisphenol pollutants by using the general biological enhancement technology is not high, so the sludge concentration is preferably controlled in the range of 6000-12000 mg / L, the sludge treatment time is preferably 24-72 h, 72-168 h and 168-1200 h, the nutrient-limited domesticated sludge is added into the activated sludge at different adding ratios, the degradation efficiency of bisphenol pollutants can be significantly improved, the functional bacteria (such as rhodococcus) can be enriched, the enzyme activity can be enhanced, and the imbalance of sludge concentration can be avoided, the periodic adding can dynamically maintain the microbial activity and balance the operation cost and stability, and the two can be combined to realize efficient degradation of bisphenol pollutants, and provide a flexible and sustainable biological enhancement strategy for complex pollutant treatment.

[0043] The above is a schematic description of the present application and its embodiments, which is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the present application, and the actual structure / embodiment is not limited thereto. Therefore, if a person skilled in the art is inspired thereby, without departing from the purpose of the present application, similar structure and embodiments are not created by creative design, which should belong to the protection scope of the present application.

Claims

1. A method for enhanced degradation of bisphenol-type substances by a nutrient-limited acclimated bacterial population, characterized in that, The method comprises the following steps: S1, taking part of activated sludge from a sludge treatment system, and carrying out aeration treatment for at least two different times without adding any nutrient substrate, the aeration treatment time is 24-1200h, the dissolved oxygen in the aeration process is greater than 2mg / L, and a nutrient-limited domesticated sludge is obtained, the nutrient-limited domesticated sludge comprises at least two kinds of sludge with different culture times; S2, adding the nutrient-limited domesticated sludge back to the sludge treatment system, and adjusting the adding proportion of the nutrient-limited domesticated sludge according to the concentration of bisphenol pollutants in the sludge treatment system to degrade the bisphenol pollutants.

2. The method for enhancing the degradation of bisphenol A by nutrient-limited domesticated microbial communities according to claim 1, characterized in that, In step S1, the inoculation concentration of the activated sludge is in the range of 6000-12000mg / L.

3. The method for enhancing the degradation of bisphenol A by nutrient-limited domesticated microbial communities according to claim 2, characterized in that, In step S1, in the case of carrying out aeration treatment for three different lengths of time on the activated sludge, the aeration treatment time is 24-72h, 72-168h, and 168-1200h, respectively.

4. The method for enhancing the degradation of bisphenol A by nutrient-limited domesticated microbial communities according to claim 3, characterized in that, In step S2, the nutrient-limited domesticated sludge comprises three kinds of sludge with different culture times, and the mixing volume ratio is 1:1:

1.

5. The method for enhancing the degradation of bisphenol A by nutrient-limited domesticated microbial communities according to claim 4, characterized in that, In step S2, adjusting the adding proportion of the nutrient-limited domesticated sludge according to the concentration of bisphenol pollutants specifically comprises: in the case that the highest concentration of bisphenol pollutants is less than 1μg / L, the volume ratio of the nutrient-limited domesticated sludge to the activated sludge in the sludge treatment system is 1:9; in the case that the highest concentration of bisphenol pollutants is less than 100μg / L, the volume ratio of the nutrient-limited domesticated sludge to the activated sludge in the sludge treatment system is 2:8; in the case that the highest concentration of bisphenol pollutants is greater than 1mg / L, the volume ratio of the nutrient-limited domesticated sludge to the activated sludge in the sludge treatment system is 3:

7.

6. The method for enhancing the degradation of bisphenol A by nutrient-limited domesticated microbial communities according to claim 1, characterized in that, In step S2, it further comprises: adjusting the adding cycle of the nutrient-limited domesticated sludge according to the concentration of bisphenol pollutants; the adding cycle is specifically: when the removal rate of bisphenol pollutants decreases to 50%, the nutrient-limited domesticated sludge is added again.

7. An apparatus for enhanced degradation of bisphenol-type substances by a nutrient-limited acclimated microbial population, the apparatus comprising: a bioreactor; a source of bisphenol-type substances; a source of nutrients; and a source of oxygen. The method of any one of claims 1-6 is applied in the device; the device comprises: a water inlet tank (2), a sludge treatment system (3), and a water outlet tank (4) connected in sequence, and the sludge treatment system (3) is further connected with an aeration tank (1); wherein, the aeration tank (1) and the sludge treatment system (3) are provided with an enriched sludge pipe (5), the aeration tank is used for aeration treatment of sludge mixture, and the enriched sludge pipe (5) is used for inputting the obtained nutrient-limited domesticated sludge into the sludge treatment system (3); the water inlet tank (2) and the sludge treatment system (3) are provided with a water inlet pipe (6), and the water inlet pipe (6) is used for inputting sewage containing bisphenol pollutants into the sludge treatment system (3); the sludge treatment system (3) and the water outlet tank (4) are provided with a water outlet pipe (7), and the water outlet pipe (7) is used for inputting the supernatant generated after the sludge and sewage mixture is precipitated in the sludge treatment system (3) into the water outlet tank (4).

8. The apparatus for enhanced degradation of bisphenol substances by a nutrient-limited acclimated bacterial population according to claim 7, wherein, The sludge treatment system (3) is further provided with a stirring device (8) and an aeration device (9), the stirring device (8) is immersed in sewage in the sludge treatment system (3), and the aeration device (9) is arranged at the bottom of the sludge treatment system (3).

9. The apparatus for enhanced degradation of bisphenol substances by nutrient-limited acclimated bacterial population as claimed in claim 7, wherein, The sludge treatment system (3) is further provided with a sampling port (10) on the side wall, and the sampling port (10) is used for sampling water from the sludge treatment system (3).

10. The apparatus for enhanced degradation of bisphenol substances by nutrient-limited acclimated bacterial population of claim 7, wherein, The sludge treatment system (3) is further provided with a DO detector (11), and the DO detector (11) is used for real-time monitoring of dissolved oxygen.

Images