Energy-saving control system for urban sewage discharge

Abstract

The invention relates to the technical field of sewage treatment, and discloses an energy-saving control system for urban sewage discharge, which comprises a solid-liquid separation module for separating sewage from cement, a sludge conveying module and a sewage conveying module. An incinerator in the sludge conveying module is used for incinerating dried sludge to generate heat energy, according to a provided formula, a temperature control unit can dynamically control the output rate of the sludge incinerator so as to ensure that the actual combustion value after incineration reaches or is close to the basic combustion value, and meanwhile the temperature control unit in the system controls the output rate of the sludge incinerator according to the actual situation. Heat generated by the sludge incinerator is distributed to different parts, 75% of the heat is conveyed to the drying unit, 15% of the heat is conveyed to the fermentation tank, 10% of the heat is conveyed to the reaction tank, it is ensured that heat energy of all links in the system is fully utilized, and the beneficial effects that the sewage treatment heat energy consumption part is self-sufficient and more energy is saved are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an energy-saving control system for urban sewage discharge. Background Art

[0002] Urban sewage refers to domestic sewage, industrial wastewater and runoff sewage within the scope of urban areas. It is generally collected by urban pipes and discharged into water bodies after being treated in urban sewage treatment plants. my country's sewage treatment industry has achieved rapid development in the past two decades. Many new technologies, new processes, new materials and new equipment for sewage treatment have been widely used in my country. For example, the "activated sludge method" has become the dominant process for sewage treatment in my country.

[0003] After searching, it is found that the existing urban sewage treatment system with the publication number CN109231710A includes a sewage pool, a grit pool, a primary sedimentation pool, a biological treatment pool, a secondary sedimentation pool, a coagulation sedimentation pool, a high-efficiency filter pool, a disinfection pool, and a clear water pool connected in sequence. The sewage pool is provided with a grid, and the primary sedimentation pool, the secondary sedimentation pool, and the coagulation sedimentation pool are respectively connected with the corresponding sludge washing device and the sludge sedimentation device in sequence, so that the precipitated sludge is washed and then enters the sludge concentration pool and the dehydration equipment. The present invention can reduce the content of harmful substances in sludge, reduce secondary pollution, and is more environmentally friendly.

[0004] Although the above technical solution effectively solves the problem of sewage purification in the sewage treatment process, the temperature required for the equipment used for sewage evolution, especially multiple biological treatments, is provided separately by heating equipment, which causes serious energy waste and is not energy-saving enough. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies of the prior art, the present invention provides an energy-saving control system for urban sewage discharge, which has the advantages of being partially self-sufficient in the thermal energy consumption of sewage treatment and more energy-saving, thereby solving the problems of the above-mentioned technology.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: an energy-saving control system for urban sewage discharge, comprising a solid-liquid separation module for separating sewage cement, characterized in that the control system also includes a sludge conveying module and a sewage conveying module;

[0009] The sludge conveying module includes an auger conveyor for conveying the solid sludge separated by the solid-liquid separation module. The sludge conveying module includes:

[0010] An incinerator feed control unit, the incinerator feed control unit comprising a sludge flow meter disposed inside the auger conveyor for measuring the sludge flow rate;

[0011] Drying unit, used to dry the sludge inside the auger conveyor;

[0012] Sludge incinerator, used to incinerate dried sludge to generate heat energy;

[0013] A temperature control unit, used to monitor the temperature in the sludge incinerator and distribute the temperature to the sludge conveying module and the sewage conveying module;

[0014] The sewage transport module includes a fermentation tank and a reaction tank, wherein the fermentation tank is connected to a temperature control unit and is used to remove organic matter in the sewage, and the treated sewage is introduced into a reaction tank, wherein the reaction tank is connected to a temperature control unit and is used to remove nutrients and organic matter in the sewage;

[0015] The sewage transport module also includes a disinfection and filtration unit, which is used to disinfect and filter sewage to ensure that the water meets the discharge standards.

[0016] Preferably, the sludge conveying module further comprises a slag collecting unit, and the slag collecting unit is used to collect ash after the sludge incineration furnace is incinerated.

[0017] Preferably, the temperature control unit is connected to the drying unit, the fermentation tank and the reaction tank, and the temperature control unit is connected to the drying unit, the fermentation tank and the reaction tank using an insulated transport pipeline, and the insulated transport pipeline is a combination of one or more of a copper pipe, a PEX pipe, a cold-dip galvanized steel pipe, an aluminum-plastic composite pipe and a PE-RT high-temperature resistant polyethylene pipe.

[0018] Preferably, the sludge flow meter is used to transmit the measured sludge flow rate data to the incinerator feed control unit, and the incinerator feed control unit is used to determine the sludge flow rate and speed up or slow down the delivery according to the flow rate. The determination formula of the incinerator feed control unit is:

[0019] W=J*T / t

[0020] W is the current sludge flow rate per minute;

[0021] J is the standard sludge flow rate: 3 cm / s;

[0022] T is the value obtained by actual measurement, indicating the actual speed of sludge passing through the conveying system within a certain period of time;

[0023] t is the time interval used for measurement.

[0024] Preferably, the drying unit includes a flow valve connected to the insulated transport pipeline connected to the inside of the auger conveyor, the flow valve is used to control the wind force in the insulated transport pipeline, and the opening amplitude of the flow valve is proportional to the thermal energy value of the sludge incinerator.

[0025] Preferably, the moisture content of the dry sludge incinerated by the sludge incinerator is ≤5%, and the calorific value standard of the sludge incinerator is one kilogram of sludge, an ash content of 30% (organic matter content of 1-30%), and a basic combustion value of 3000 kcal / kg.

[0026] Preferably, the temperature control unit controls the sludge incinerator to have a combustion output rate lower than the basic combustion value by using the following calculation formula:

[0027] S=ssz*(1―sfhl)*(1―hfl)*(1―yjz)

[0028] Where S is the actual combustion value;

[0029] ssz is the basic combustion value;

[0030] sfhl is the moisture content;

[0031] hfl is the ash content;

[0032] yjz is the organic matter content;

[0033] Among them, the organic matter content multiplier ranges from 0.7 to 0.99, corresponding to an organic matter content of 1%-30%. The actual combustion value is lower than 3000 kcal / kg. For every 10% lower, the outward wind force is reduced by 5%.

[0034] Preferably, the temperature control unit controls the sludge incinerator to have a combustion output rate greater than the basic combustion value by using the following calculation formula:

[0035] S=ssz*(1-a)*(1-b)*(1-c)

[0036] Where S is the actual combustion value;

[0037] ssz is the basic combustion value;

[0038] a is the moisture content;

[0039] b is the ash content;

[0040] c is the organic matter content multiplier

[0041] a≤5%;

[0042] b = 30%;

[0043] 0.7≤c≤0.99.

[0044] Preferably, the heat distribution ratio of the temperature control unit is: 70%-75% of the drying unit, 10%-15% of the fermentation tank and 5%-10% of the reaction tank. The temperature of the fermentation tank is constant, with a specific temperature value of 30°C-34°C, and the temperature of the reaction tank is 25°C-32°C.

[0045] Preferably, the control system further comprises the following implementation steps:

[0046] Step 1: Send the municipal sewage to the solid-liquid separation module to separate the solid sludge and liquid sewage, and send them to the sludge conveying module and the sewage conveying module respectively;

[0047] Step 2: The auger conveyor of the sludge conveying module transports the sludge to the sludge incinerator, and the feeding control unit of the incinerator controls the feeding speed;

[0048] Step 3: The drying unit dries the sludge in the auger conveyor to make its moisture content ≤5%, and then sends it to the sludge incinerator after reaching the standard;

[0049] Step 4: The sludge incinerator burns the dry sludge and obtains the combustion heat. At this time, the temperature control unit starts to calculate the calorific value of the batch of dry sludge and selects the corresponding heat transfer formula;

[0050] Step 5: The temperature control unit delivers 75% of the heat to the drying unit, 15% of the heat to the fermentation tank, and 10% of the heat to the reaction tank;

[0051] Step six: After fermentation and reaction, the sewage is sent to a disinfection and filtration unit to ensure that the sewage meets the standards for normal discharge.

[0052] Compared with the prior art, the present invention provides an energy-saving control system for urban sewage discharge, which has the following beneficial effects:

[0053] 1. The present invention uses an incinerator in the sludge conveying module to incinerate the dried sludge to generate heat energy. According to the provided formula, the temperature control unit dynamically controls the output rate of the sludge incinerator to ensure that the actual combustion value after incineration reaches or is close to the basic combustion value, thereby maximizing the utilization of heat energy. At the same time, the temperature control unit in the system distributes the heat generated by the sludge incinerator to different parts according to actual conditions. 75% of the heat is transported to the drying unit, 15% of the heat is transported to the fermentation tank, and 10% of the heat is transported to the reaction tank, ensuring that the heat energy of each link in the system is fully utilized, so that the entire sewage treatment system can operate more efficiently, achieving the beneficial effect of self-sufficiency in the heat energy consumption of sewage treatment and greater energy saving.

[0054] 2. The present invention monitors the temperature in the sludge incinerator through the temperature control unit in the system, and dynamically adjusts the distribution of heat according to demand, and distributes heat to different parts, such as the drying unit, the fermentation tank and the reaction tank, to ensure that the heat can be optimally utilized and that each link is properly supplied with heat energy. The system uses devices such as heat-insulating transport pipes and flow valves to effectively recycle the heat released after sludge incineration. By controlling the opening amplitude of the flow valve and adjusting the wind force in the transmission pipe, the heat is more effectively utilized to avoid excessive energy loss. The calorific value after sludge incineration is monitored and calculated by the temperature control unit in real time to ensure that the sludge incineration process can meet the set standards and avoid excessive or insufficient utilization of heat. The system sets a heat distribution ratio and fixes the temperature range of the fermentation tank and the reaction tank to ensure that the heat can be distributed and utilized according to a predetermined plan, thereby improving the overall heat recovery efficiency. The constant temperature setting of the fermentation tank and the reaction tank is also conducive to ensuring the reaction effect and processing efficiency, achieving the beneficial effect of more meticulous heat utilization after sludge incineration without causing waste.

[0055] 3. The present invention evenly distributes the heat generated after incineration to the fermentation tank and the reaction tank, with 75% of the heat being delivered to the drying unit, 15% of the heat being delivered to the fermentation tank, and 10% of the heat being delivered to the reaction tank, thereby ensuring that the heat energy of each link within the system is fully utilized, which helps the growth and metabolic activities of microorganisms, promotes the degradation and treatment process of organic matter in sewage, thereby accelerating the treatment speed and efficiency of sewage, and achieving the beneficial effect of even heat distribution that is more conducive to rapid treatment of sewage by microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Figure 1 It is a schematic diagram of the control system of the present invention;

[0057] Figure 2 It is a schematic diagram of the control system flow of the present invention. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0059] See also Figure 1-2 , an energy-saving control system for urban sewage discharge, comprising a solid-liquid separation module for separating sewage cement, characterized in that the control system also includes a sludge conveying module and a sewage conveying module;

[0060] The sludge conveying module includes an auger conveyor for conveying the solid sludge separated by the solid-liquid separation module. The sludge conveying module includes:

[0061] An incinerator feed control unit, the incinerator feed control unit comprising a sludge flow meter disposed inside the auger conveyor for measuring the sludge flow rate;

[0062] Drying unit, used to dry the sludge inside the auger conveyor;

[0063] Sludge incinerator, used to incinerate dried sludge to generate heat energy;

[0064] A temperature control unit, used to monitor the temperature in the sludge incinerator and distribute the temperature to the sludge conveying module and the sewage conveying module;

[0065] The sewage transport module includes a fermentation tank and a reaction tank, wherein the fermentation tank is connected to a temperature control unit and is used to remove organic matter in the sewage, and the treated sewage is introduced into a reaction tank, wherein the reaction tank is connected to a temperature control unit and is used to remove nutrients and organic matter in the sewage;

[0066] The sewage transport module also includes a disinfection and filtration unit, which is used to disinfect and filter sewage to ensure that the water meets the discharge standards.

[0067] Furthermore, the pathogenic microorganisms and other harmful substances in the sewage of the filtration unit can be disinfected and filtered, so that the sewage can be treated comprehensively and thoroughly before final discharge, ensuring that the water quality meets the discharge standards.

[0068] Preferably, the sludge conveying module further comprises a slag collecting unit, and the slag collecting unit is used to collect ash after the sludge incineration furnace is incinerated.

[0069] Furthermore, the slag collection unit effectively collects the ash after sludge incineration, realizing the resource utilization of waste. The ash may contain some organic matter and minerals. Through reasonable treatment and recycling, it can reduce resource waste, realize the transformation of waste into resources, promote the recycling of resources, and reduce the cost of waste treatment and disposal by effectively collecting and treating the ash after sludge incineration. The resource utilization of ash reduces the amount of waste to be treated and reduces the treatment cost, which helps to reduce the operating cost of the enterprise and improve the economic benefits.

[0070] Preferably, the temperature control unit is connected to the drying unit, the fermentation tank and the reaction tank, and the temperature control unit is connected to the drying unit, the fermentation tank and the reaction tank using an insulated transport pipeline, and the insulated transport pipeline is a combination of one or more of a copper pipe, a PEX pipe, a cold-dip galvanized steel pipe, an aluminum-plastic composite pipe and a PE-RT high-temperature resistant polyethylene pipe.

[0071] Furthermore, the temperature control unit can stably and accurately control the temperature of the system to ensure that the temperature during the treatment process meets the requirements. The use of insulated transport pipes to connect different equipment can prevent heat and temperature loss, further ensuring the stability and reliability of the treatment system. The insulated transport pipes are made of one or more combinations of copper pipes, PEX pipes, cold-dip galvanized steel pipes, aluminum-plastic composite pipes and PE-RT high-temperature resistant polyethylene pipes. Different pipe materials are selected under different temperature and pressure conditions to meet the needs of optimizing the connection between equipment.

[0072] Preferably, the sludge flow meter is used to transmit the measured sludge flow rate data to the incinerator feed control unit, and the incinerator feed control unit is used to determine the sludge flow rate and speed up or slow down the delivery according to the flow rate. The determination formula of the incinerator feed control unit is:

[0073] W=J*T / t

[0074] W is the current sludge flow rate per minute;

[0075] J is the standard sludge flow rate: 3 cm / s;

[0076] T is the value obtained by actual measurement, indicating the actual speed of sludge passing through the conveying system within a certain period of time;

[0077] t is the time interval used for measurement.

[0078] Furthermore, through the cooperation of the sludge flow meter and the incinerator feed control unit, an intelligent control system is realized. According to the real-time transmission and calculation of the sludge flow rate data, the system can timely judge the sludge flow rate, and automatically adjust the conveying speed through the control unit to realize intelligent management and control. Through the judgment formula W = J*(T) / t, the system can accurately calculate the current sludge flow rate per minute, and perform corresponding conveying speed control according to the calculation results. By using the sludge flow meter and judgment formula, the system can respond to changes in the sludge flow rate in real time. According to the actual measured value and the set standard flow rate, the system can accurately judge the current sludge flow rate, and take timely measures to speed up or slow down the delivery to ensure the stability and smoothness of the system operation.

[0079] Preferably, the drying unit includes a flow valve connected to the insulated transport pipeline connected to the inside of the auger conveyor, the flow valve is used to control the wind force in the insulated transport pipeline, and the opening amplitude of the flow valve is proportional to the thermal energy value of the sludge incinerator.

[0080] Preferably, the moisture content of the dry sludge incinerated by the sludge incinerator is ≤5%, and the calorific value standard of the sludge incinerator is one kilogram of sludge, an ash content of 30% (organic matter content of 1-30%), and a basic combustion value of 3000 kcal / kg.

[0081] Preferably, the temperature control unit controls the sludge incinerator to have a combustion output rate lower than the basic combustion value by using the following calculation formula:

[0082] S=ssz*(1―sfhl)*(1―hfl)*(1―yjz)

[0083] Where S is the actual combustion value;

[0084] ssz is the basic combustion value;

[0085] sfhl is the moisture content;

[0086] hfl is the ash content;

[0087] yjz is the organic matter content;

[0088] Among them, the organic matter content multiplier ranges from 0.7 to 0.99, corresponding to an organic matter content of 1%-30%. The actual combustion value is lower than 3000 kcal / kg. For every 10% lower, the outward wind force is reduced by 5%.

[0089] Furthermore, by automatically adjusting the conveying wind force according to the actual combustion value, the combustion efficiency can be effectively improved. When the actual combustion value is lower than the basic combustion value, the combustion conditions are adjusted by reducing the outward conveying wind force to ensure that the sludge can be fully burned, improve the combustion efficiency, and reduce fuel consumption. By controlling the output rate of the sludge incinerator, the system can adjust according to the characteristics of the sludge and the actual combustion conditions to optimize the sludge treatment effect. Ensure that the sludge can be effectively treated during the combustion process and improve the treatment efficiency and treatment effect of the incinerator.

[0090] Preferably, the temperature control unit controls the sludge incinerator to have a combustion output rate greater than the basic combustion value by using the following calculation formula:

[0091] S=ssz*(1-a)*(1-b)*(1-c)

[0092] Where S is the actual combustion value;

[0093] ssz is the basic combustion value;

[0094] a is the moisture content;

[0095] b is the ash content;

[0096] c is the organic matter content multiplier

[0097] a≤5%;

[0098] b = 30%;

[0099] 0.7≤c≤0.99.

[0100] Furthermore, the temperature control unit controls the sludge incinerator and calculates the actual combustion value according to a specific calculation formula, achieving efficient computing capabilities, improving the intelligence and automation level of the system, ensuring the stability of the incineration effect and improving work efficiency, regularly detecting the actual combustion value and comparing it with the basic combustion value, and automatically adjusting the conveying wind force according to the calculation formula when the actual combustion value is greater than the basic combustion value, realizing an adaptive adjustment mechanism. This mechanism can more intelligently control the operation of the system and ensure its safety and stability.

[0101] Preferably, the heat distribution ratio of the temperature control unit is: 70%-75% of the drying unit, 10%-15% of the fermentation tank and 5%-10% of the reaction tank. The temperature of the fermentation tank is constant, with a specific temperature value of 30°C-34°C, and the temperature of the reaction tank is 25°C-32°C.

[0102] Preferably, the control system further comprises the following implementation steps:

[0103] Step 1: Send the municipal sewage to the solid-liquid separation module to separate the solid sludge and liquid sewage, and send them to the sludge conveying module and the sewage conveying module respectively;

[0104] Step 2: The auger conveyor of the sludge conveying module transports the sludge to the sludge incinerator, and the feeding control unit of the incinerator controls the feeding speed;

[0105] Step 3: The drying unit dries the sludge in the auger conveyor to make its moisture content ≤5%, and then sends it to the sludge incinerator after reaching the standard;

[0106] Step 4: The sludge incinerator burns the dry sludge and obtains the combustion heat. At this time, the temperature control unit starts to calculate the calorific value of the batch of dry sludge and selects the corresponding heat transfer formula;

[0107] Step 5: The temperature control unit delivers 75% of the heat to the drying unit, 15% of the heat to the fermentation tank, and 10% of the heat to the reaction tank;

[0108] Step six: After fermentation and reaction, the sewage is sent to a disinfection and filtration unit to ensure that the sewage meets the standards for normal discharge.

[0109] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving control system for urban sewage discharge, comprising a solid-liquid separation module for separating sewage cement, characterized in that: The control system also includes a sludge conveying module and a sewage conveying module; The sludge conveying module includes an auger conveyor for conveying the solid sludge separated by the solid-liquid separation module. The sludge conveying module includes: An incinerator feed control unit, the incinerator feed control unit comprising a sludge flow meter disposed inside the auger conveyor for measuring the sludge flow rate; Drying unit, used to dry the sludge inside the auger conveyor; Sludge incinerator, used to incinerate dried sludge to generate heat energy; A temperature control unit, used to monitor the temperature in the sludge incinerator and distribute the temperature to the sludge conveying module and the sewage conveying module; The sewage transport module includes a fermentation tank and a reaction tank, wherein the fermentation tank is connected to a temperature control unit and is used to remove organic matter in the sewage, and the treated sewage is introduced into a reaction tank, wherein the reaction tank is connected to a temperature control unit and is used to remove nutrients and organic matter in the sewage; The sewage transport module also includes a disinfection and filtration unit, which is used to disinfect and filter sewage to ensure that the water meets the discharge standards.

2. The energy-saving control system for urban sewage discharge according to claim 1 is characterized in that: The sludge conveying module further comprises a slag collecting unit, and the slag collecting unit is used to collect ash after being burned in the sludge incinerator.

3. The energy-saving control system for urban sewage discharge according to claim 1 is characterized in that: The temperature control unit is connected to the drying unit, the fermentation tank and the reaction tank. The temperature control unit is connected to the drying unit, the fermentation tank and the reaction tank using an insulated transport pipeline. The insulated transport pipeline is a combination of one or more of a copper pipe, a PEX pipe, a cold-dip galvanized steel pipe, an aluminum-plastic composite pipe and a PE-RT high-temperature resistant polyethylene pipe.

4. The energy-saving control system for urban sewage discharge according to claim 3 is characterized in that: The sludge flow meter is used to transmit the measured sludge flow rate data to the incinerator feed control unit, and the incinerator feed control unit is used to determine the sludge flow rate and speed up or slow down the delivery according to the flow rate. The determination formula of the incinerator feed control unit is: W=J*T / t * is the current sludge flow rate per minute; J is the standard sludge flow rate: 3 cm / s; T is the value obtained by actual measurement, indicating the actual speed of sludge passing through the conveying system within a certain period of time; t is the time interval used for measurement.

5. The energy-saving control system for urban sewage discharge according to claim 4 is characterized in that: The drying unit includes a flow valve connected to the insulated transport pipeline connected to the inside of the auger conveyor. The flow valve is used to control the wind force in the insulated transport pipeline, and the opening amplitude of the flow valve is proportional to the thermal energy value of the sludge incinerator.

6. The energy-saving control system for urban sewage discharge according to claim 5 is characterized in that: The moisture content of the dry sludge incinerated by the sludge incinerator is ≤5%. The calorific value standard of the sludge incinerator is 30% ash content (organic matter content is 1-30%) per kilogram of sludge, and the basic combustion value is 3000 kcal / KG.

7. The energy-saving control system for urban sewage discharge according to claim 6 is characterized in that: When the temperature control unit controls the sludge incinerator's incineration output rate to be lower than the basic combustion value, the calculation formula is: S=sszW(1―sfhl)*(1―hfl)*(1―yjz) Where S is the actual combustion value; ssz is the basic combustion value; sfhl is the moisture content; hfl is the ash content; yjz is the organic matter content; Among them, the organic matter content multiplier ranges from 0.7 to 0.99, corresponding to an organic matter content of 1%-30%. The actual combustion value is lower than 3000 kcal / kg. For every 10% lower, the outward wind force is reduced by 5%.

8. The energy-saving control system for urban sewage discharge according to claim 6 is characterized in that: When the temperature control unit controls the sludge incinerator's combustion output rate to be greater than the basic combustion value, the calculation formula is: S=ssz*(1-a)*(1-b)*(1-c) Where S is the actual combustion value; ssz is the basic combustion value; a is the moisture content; b is the ash content; c is the organic matter content multiplier a≤5％； b＝30％； 0.7≤c≤0.99。 9. The energy-saving control system for urban sewage discharge according to claim 8 is characterized in that: The heat distribution ratio of the temperature control unit is: 70%-75% of the drying unit, 10%-15% of the fermentation tank and 5%-10% of the reaction tank. The temperature of the fermentation tank is constant, with a specific temperature value of 30°C-34°C, and the temperature of the reaction tank is 25°C-32°C.

10. The energy-saving control system for urban sewage discharge according to claim 9, characterized in that: The control system also includes the following implementation steps: Step 1: Send the municipal sewage to the solid-liquid separation module to separate the solid sludge and liquid sewage, and send them to the sludge conveying module and the sewage conveying module respectively; Step 2: The auger conveyor of the sludge conveying module transports the sludge to the sludge incinerator, and the feeding control unit of the incinerator controls the feeding speed; Step 3: The drying unit dries the sludge in the auger conveyor to make its moisture content ≤5%, and then sends it to the sludge incinerator after reaching the standard; Step 4: The sludge incinerator burns the dry sludge and obtains the combustion heat. At this time, the temperature control unit starts to calculate the calorific value of the batch of dry sludge and selects the corresponding heat transfer formula; Step 5: The temperature control unit delivers 75% of the heat to the drying unit, 15% of the heat to the fermentation tank, and 10% of the heat to the reaction tank; Step six: After fermentation and reaction, the sewage is sent to a disinfection and filtration unit to ensure that the sewage meets the standards for normal discharge.

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