Cooperative high-temperature aerobic fermentation control system and method for sludge pretreatment

Abstract

The invention discloses a synergistic high-temperature aerobic fermentation control system for sludge pretreatment. The synergistic high-temperature aerobic fermentation control system comprises a sludge pretreatment module, a dynamic feeding module, a fermentation reaction bin and a central control unit, the sludge pretreatment module, the dynamic feeding module, the fermentation reaction bin and the central control unit are in communication connection; the central control unit is also electrically connected with a multi-dimensional data acquisition unit for acquiring real-time parameters in the fermentation reaction bin; the multi-dimensional data acquisition unit is used for acquiring layered temperature data, real-time oxygen concentration data, pressure distribution data in the bin and humidity and volatile organic compound concentration data of discharged gas of different heights and regions in the fermentation reaction bin. Compared with the prior art, the collaborative high-temperature aerobic fermentation control system and the collaborative high-temperature aerobic fermentation control method have the advantages that the collaborative high-temperature aerobic fermentation control system and the collaborative high-temperature aerobic fermentation control method are controlled and used according to real-time working conditions, and multi-process dynamic collaboration is realized.

Description

Technical Field

[0001] This invention relates to the field of sludge waste resource utilization technology, specifically to a synergistic high-temperature aerobic fermentation control system and method for pre-treated sludge. Background Technology

[0002] Sludge produced by urban wastewater treatment plants contains a large amount of organic matter and nutrients, but it is also rich in pathogens and parasite eggs. High-temperature aerobic fermentation is a key technology for achieving the harmlessness, stabilization, and resource utilization of sludge.

[0003] Currently, most sludge fermentation methods suffer from limited monitoring dimensions, blind spots, rigid feed control, lack of coordination, difficulty in global coordination and monitoring of global reaction parameters, and uncontrollable fermentation process.

[0004] Therefore, there is an urgent need to develop a synergistic high-temperature aerobic fermentation control system and method for pre-treated sludge that achieves high efficiency, safety and environmental protection in the fermentation process. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the above-mentioned technical defects and provide a synergistic high-temperature aerobic fermentation control system and method for pre-treated sludge that achieves dynamic coordination of multiple processes by executing control according to real-time operating conditions.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a synergistic high-temperature aerobic fermentation control system for pretreated sludge, including a sludge pretreatment module, a dynamic feeding module, a fermentation reaction chamber and a central control unit;

[0007] The sludge pretreatment module, dynamic feeding module, fermentation reaction chamber and central control unit are connected in communication.

[0008] The central control unit is also electrically connected to a multi-dimensional data acquisition unit for acquiring real-time parameters within the fermentation reaction chamber;

[0009] The multi-dimensional data acquisition unit acquires stratified temperature data at different heights and in different areas within the fermentation reaction chamber, real-time oxygen concentration data, pressure distribution data within the chamber, and humidity and volatile organic compound concentration data of the exhaust gas.

[0010] Preferably, the multi-dimensional data acquisition unit includes a wireless temperature sensor array distributed along the axial and radial directions of the fermentation reaction chamber, and a multi-component gas analyzer installed at the exhaust port at the top of the chamber.

[0011] The central control unit constructs a three-dimensional temperature field model inside the warehouse based on the acquired layered temperature data. The three-dimensional temperature field model identifies low-temperature dead zones and high-temperature overheating zones, and generates differentiated ventilation strategy instructions.

[0012] Preferably, the sludge pretreatment module includes a crushing unit, a dewatering unit, and a sludge data monitoring unit;

[0013] The sludge data monitoring unit acquires the humidity data of the gas discharged from the sludge material, and the central control unit issues control commands to the dynamic feeding module based on the acquired humidity data.

[0014] When the gas humidity remains below the preset drying threshold, the dynamic feeding module increases the proportion of sludge with high water content, and the dewatering unit reduces its operating power.

[0015] Preferably, the dynamic feeding module includes a material conveying unit, a proportioning adjustment unit, and a feeding monitoring unit;

[0016] The feed monitoring unit acquires feed flow rate and material composition data in real time, and the central control unit issues adjustment commands to the proportional control unit based on the material parameters fed back by the sludge pretreatment module.

[0017] The ratio adjustment unit dynamically adjusts the feed ratio of sludge and conditioning agent according to instructions.

[0018] Preferably, the inner wall of the fermentation reaction chamber is also provided with an adjustable-opening layered air distribution plate, which divides the space inside the fermentation reaction chamber into several independent ventilation layers.

[0019] When the oxygen concentration in a certain stratified area is detected to be lower than the preset aerobic threshold and the pressure distribution shows that the airflow is obstructed, the central control unit controls the opening of the corresponding stratified air distribution plate to increase and increases the air pressure output of that area.

[0020] Preferably, the central control unit also integrates a data storage unit and an early warning unit, wherein the data storage unit records all real-time parameters and control commands collected by the multi-dimensional data acquisition unit;

[0021] When any parameter exceeds the preset safety range, the warning unit issues an audible and visual warning signal.

[0022] Another aspect of this invention discloses a fermentation control method for a synergistic high-temperature aerobic fermentation control system for pretreated sludge, comprising the following steps:

[0023] S1: Load the preset drying threshold, aerobic threshold and safe temperature range, and start the multi-dimensional data acquisition unit;

[0024] S2: Real-time acquisition of stratified temperature, oxygen concentration, pressure distribution and exhaust parameters within the fermentation reaction chamber;

[0025] S3: Construct a three-dimensional temperature field model based on the collected layered temperature data to identify low-temperature dead zones and high-temperature overheating zones within the warehouse;

[0026] S4: Based on the humidity data of the gas discharged from the sludge material, dynamically adjust the feeding ratio of the dynamic feeding module and the power of the dewatering unit;

[0027] S5: Based on the identification results of the three-dimensional temperature field model and oxygen concentration data, generate the opening adjustment command and ventilation strategy of the layered air distribution plate;

[0028] S6: Monitors the ratio of volatile organic compound concentration to humidity in the exhaust gas. When the parameter is abnormal, it triggers an early warning and executes emergency control.

[0029] Preferably, the preset drying threshold, aerobic threshold, and safe temperature range in S1 can be manually modified through the central control unit.

[0030] Preferably, the sampling frequency of the fermentation reaction chamber parameters in S2 is 1-5 min / time.

[0031] Preferably, the ventilation strategy in S5 includes:

[0032] In low-temperature dead zones, increase the opening of the corresponding layered air distribution panels and the regional air pressure to improve oxygen supply;

[0033] In areas of high temperature and overheating, increase ventilation and reduce wind pressure in the corresponding areas to achieve temperature balance.

[0034] The advantages of this invention compared with the prior art are as follows: This invention constructs a three-dimensional temperature field model inside the fermentation chamber through an axially and radially distributed wireless sensor array, accurately locating low-temperature dead zones and high-temperature overheating zones, providing data support for precise control.

[0035] Based on the pretreatment section exhaust humidity feedback control of the feed ratio and dehydration power, closed-loop automatic control of raw material moisture content is realized, avoiding fermentation failure caused by raw material fluctuations.

[0036] This invention monitors VOCs concentration in real time and combines it with humidity ratio analysis, enabling early detection of odor trends and timely warning and response, effectively controlling secondary pollution; at the same time, comprehensive safety threshold monitoring ensures safe equipment operation. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of a synergistic high-temperature aerobic fermentation control system for pre-treated sludge. Detailed Implementation

[0038] The present invention will now be described in further detail with reference to the accompanying drawings.

[0039] Combined with appendix Figure 1As shown, a synergistic high-temperature aerobic fermentation control system for pretreated sludge includes a sludge pretreatment module, a dynamic feeding module, a fermentation reaction chamber, and a central control unit. The sludge pretreatment module, dynamic feeding module, fermentation reaction chamber, and central control unit are communicatively connected. The central control unit is also electrically connected to a multi-dimensional data acquisition unit for acquiring real-time parameters within the fermentation reaction chamber. The multi-dimensional data acquisition unit acquires stratified temperature data at different heights and regions within the fermentation reaction chamber, real-time oxygen concentration data, pressure distribution data within the chamber, and humidity and volatile organic compound concentration data of the exhaust gas.

[0040] The multi-dimensional data acquisition unit includes a wireless temperature sensor array distributed along the axial and radial directions of the fermentation reaction chamber, and a multi-component gas analyzer installed at the exhaust port at the top of the chamber.

[0041] The central control unit constructs a three-dimensional temperature field model inside the warehouse based on the acquired layered temperature data. The three-dimensional temperature field model identifies low-temperature dead zones and high-temperature overheating zones, and generates differentiated ventilation strategy instructions.

[0042] The sludge pretreatment module includes a crushing unit, a dewatering unit, and a sludge data monitoring unit.

[0043] The sludge data monitoring unit acquires the humidity data of the gas discharged from the sludge material, and the central control unit issues control commands to the dynamic feeding module based on the acquired humidity data.

[0044] When the gas humidity remains below the preset drying threshold, the dynamic feeding module increases the proportion of sludge with high water content, and the dewatering unit reduces its operating power.

[0045] In one embodiment, the dynamic feeding module includes a material conveying unit, a proportioning adjustment unit, and a feeding monitoring unit;

[0046] The feed monitoring unit acquires feed flow rate and material composition data in real time, and the central control unit issues adjustment commands to the proportional control unit based on the material parameters fed back by the sludge pretreatment module.

[0047] The ratio adjustment unit dynamically adjusts the feed ratio of sludge and conditioning agent according to instructions.

[0048] The inner wall of the fermentation reaction chamber is also equipped with an adjustable layered air distribution plate, which divides the space inside the fermentation reaction chamber into several independent ventilation layers.

[0049] When the oxygen concentration in a certain layer area is detected to be lower than the preset aerobic threshold and the pressure distribution shows that the airflow is obstructed, the central control unit controls the opening of the corresponding layer air distribution plate to increase and increases the wind pressure output of the area. The central control unit also integrates a data storage unit and an early warning unit. The data storage unit records all real-time parameters and control commands collected by the multi-dimensional data acquisition unit.

[0050] When any parameter exceeds the preset safety range, the warning unit issues an audible and visual warning signal.

[0051] In specific implementation, this invention includes the following steps:

[0052] S1: Load the preset drying threshold, aerobic threshold and safe temperature range, and start the multi-dimensional data acquisition unit;

[0053] S2: Real-time acquisition of stratified temperature, oxygen concentration, pressure distribution and exhaust parameters within the fermentation reaction chamber;

[0054] S3: Construct a three-dimensional temperature field model based on the collected layered temperature data to identify low-temperature dead zones and high-temperature overheating zones within the warehouse;

[0055] S4: Based on the humidity data of the gas discharged from the sludge material, dynamically adjust the feeding ratio of the dynamic feeding module and the power of the dewatering unit;

[0056] S5: Based on the identification results of the three-dimensional temperature field model and oxygen concentration data, generate the opening adjustment command and ventilation strategy of the layered air distribution plate;

[0057] S6: Monitors the ratio of volatile organic compound concentration to humidity in the exhaust gas. When the parameter is abnormal, it triggers an early warning and executes emergency control.

[0058] In one embodiment, the preset drying threshold, aerobic threshold, and safe temperature range in S1 are manually modified via the central control unit; the sampling frequency of the fermentation reaction chamber parameters in S2 is 1-5 minutes / time; and the ventilation strategy in S5 includes:

[0059] In low-temperature dead zones, increase the opening of the corresponding layered air distribution panels and the regional air pressure to improve oxygen supply;

[0060] In areas of high temperature and overheating, increase ventilation and reduce wind pressure in the corresponding areas to achieve temperature balance.

[0061] In this invention, a refined and intelligent management of the entire sludge fermentation process is realized. In actual operation, the wireless temperature sensor array can penetrate the material pile and capture the temperature change gradient of the internal microenvironment in real time. The central control unit uses these data to reconstruct a three-dimensional temperature distribution map in real time, thereby accurately locating the local low-temperature incomplete fermentation area or high-temperature inactivation risk area that cannot be detected by traditional single-point monitoring.

[0062] Meanwhile, the system uses the gas humidity in the pretreatment stage as a feedforward signal to dynamically balance the moisture content of the feed material, ensuring the optimal porosity and biological activity environment of the fermentation material from the source. With the independent adjustment mechanism of the layered air distribution plate in the chamber, the system can implement directional air supply for different levels of oxygen demand and heat dissipation needs, which not only avoids energy waste and excessive heat loss caused by large global air volume, but also effectively solves the problem of odorous gas generation caused by local anaerobic conditions.

[0063] By tracking the ratio of volatile organic compounds to humidity in exhaust gas in real time, an early pollution warning mechanism was established. Once an abnormal trend is detected, emergency intervention measures are immediately initiated, ensuring the environmental compliance and operational safety of the entire fermentation process. This significantly improves the efficiency and stability of sludge harmless treatment and provides reliable technical support for the resource utilization of urban sludge.

[0064] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0065] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0066] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A synergistic high-temperature aerobic fermentation control system for pretreated sludge, characterized in that: It includes a sludge pretreatment module, a dynamic feeding module, a fermentation reaction chamber, and a central control unit; The sludge pretreatment module, dynamic feeding module, fermentation reaction chamber and central control unit are connected in communication. The central control unit is also electrically connected to a multi-dimensional data acquisition unit for acquiring real-time parameters within the fermentation reaction chamber; The multi-dimensional data acquisition unit acquires stratified temperature data at different heights and in different areas within the fermentation reaction chamber, real-time oxygen concentration data, pressure distribution data within the chamber, and humidity and volatile organic compound concentration data of the exhaust gas.

2. The synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 1, characterized in that: The multi-dimensional data acquisition unit includes a wireless temperature sensor array distributed along the axial and radial directions of the fermentation reaction chamber, and a multi-component gas analyzer installed at the exhaust port at the top of the chamber. The central control unit constructs a three-dimensional temperature field model inside the warehouse based on the acquired layered temperature data. The three-dimensional temperature field model identifies low-temperature dead zones and high-temperature overheating zones, and generates differentiated ventilation strategy instructions.

3. The synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 1, characterized in that: The sludge pretreatment module includes a crushing unit, a dewatering unit, and a sludge data monitoring unit; The sludge data monitoring unit acquires the humidity data of the gas discharged from the sludge material, and the central control unit issues control commands to the dynamic feeding module based on the acquired humidity data. When the gas humidity remains below the preset drying threshold, the dynamic feeding module increases the proportion of sludge with high water content, and the dewatering unit reduces its operating power.

4. The synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 3, characterized in that: The dynamic feeding module includes a material conveying unit, a proportioning adjustment unit, and a feeding monitoring unit; The feed monitoring unit acquires feed flow rate and material composition data in real time, and the central control unit issues adjustment commands to the proportional control unit based on the material parameters fed back by the sludge pretreatment module. The ratio adjustment unit dynamically adjusts the feed ratio of sludge and conditioning agent according to instructions.

5. The synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 1, characterized in that: The inner wall of the fermentation reaction chamber is also equipped with an adjustable-opening layered air distribution plate, which divides the space inside the fermentation reaction chamber into several independent ventilation layers. When the oxygen concentration in a certain stratified area is detected to be lower than the preset aerobic threshold and the pressure distribution shows that the airflow is obstructed, the central control unit controls the opening of the corresponding stratified air distribution plate to increase and increases the air pressure output of that area.

6. The synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 1, characterized in that: The central control unit also integrates a data storage unit and an early warning unit. The data storage unit records all real-time parameters and control commands collected by the multi-dimensional data acquisition unit. When any parameter exceeds the preset safety range, the warning unit issues an audible and visual warning signal.

7. The fermentation control method of a synergistic high-temperature aerobic fermentation control system for pretreated sludge according to any one of claims 1 to 6, characterized in that: Includes the following steps: S1: Load the preset drying threshold, aerobic threshold and safe temperature range, and start the multi-dimensional data acquisition unit; S2: Real-time acquisition of stratified temperature, oxygen concentration, pressure distribution and exhaust parameters within the fermentation reaction chamber; S3: Construct a three-dimensional temperature field model based on the collected layered temperature data to identify low-temperature dead zones and high-temperature overheating zones within the warehouse; S4: Based on the humidity data of the gas discharged from the sludge material, dynamically adjust the feeding ratio of the dynamic feeding module and the power of the dewatering unit; S5: Based on the identification results of the three-dimensional temperature field model and oxygen concentration data, generate the opening adjustment command and ventilation strategy of the layered air distribution plate; S6: Monitors the ratio of volatile organic compound concentration to humidity in the exhaust gas. When the parameter is abnormal, it triggers an early warning and executes emergency control.

8. The fermentation control method of the synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 7, characterized in that: The preset drying threshold, aerobic threshold, and safe temperature range in S1 can be manually modified through the central control unit.

9. The fermentation control method of a synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 7, characterized in that: The parameters of the fermentation reaction chamber in S2 are collected at a frequency of 1-5 min / time.

10. The fermentation control method of the synergistic high-temperature aerobic fermentation control system for pretreated sludge according to claim 7, characterized in that: The ventilation strategy in S5 includes: In low-temperature dead zones, increase the opening of the corresponding layered air distribution panels and the regional air pressure to improve oxygen supply; In areas of high temperature and overheating, increase ventilation and reduce wind pressure in the corresponding areas to achieve temperature balance.

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