High-concentration modified asphalt waterproof coiled material wastewater treatment system and method

Abstract

The invention discloses a high-concentration modified asphalt waterproof coiled material wastewater treatment system and method. The system comprises an oil removal device, an advanced oxidation device, an evaporation device, an efficient denitrification device and a control box which are connected in sequence, wherein the control box is used for realizing automatic control of the wastewater treatment system; the oil removal device is used for separating oil from water and preliminarily removing suspended matters; the advanced oxidation device is used for carrying out primary mud-water separation after strong oxidation, neutralization, coagulation and precipitation to realize primary removal of COD (Chemical Oxygen Demand); the evaporation device realizes gas-liquid separation through heating according to different boiling points, so that secondary removal of COD is realized; and the efficient denitrification device introduces efficient denitrification strains to perform denitrification treatment on condensate water generated by the evaporation device and perform secondary mud-water separation. The wastewater treatment system has the advantages of high integration degree and full-automatic operation, and can reduce the COD concentration to the greatest extent by adopting an advanced oxidation and evaporation combined treatment process, so that the treated wastewater can reach the wastewater comprehensive discharge third-level standard after being mixed with domestic wastewater.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of asphalt waterproofing membrane wastewater treatment, in particular to a high-concentration modified asphalt waterproofing membrane wastewater treatment system and method. BACKGROUND

[0002] Modified asphalt waterproofing membrane solves the temperature sensitivity problem of traditional asphalt through polymer modification (SBS / APP), and occupies an irreplaceable position in the fields of building, municipal administration, industry, etc. due to its reliable overall waterproofing, wide temperature adaptability and mature construction process. However, a part of cleaning wastewater and flushing wastewater is generated during the production process of modified asphalt waterproofing membrane, and the wastewater has the characteristics of complex water quality composition, high organic matter concentration, high oil content, high ammonia nitrogen concentration, large water fluctuation, high content of refractory substances and high treatment difficulty. At present, there are few reports on the system treatment method thereof, which causes great trouble to enterprises. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application provides a high-concentration modified asphalt waterproofing membrane wastewater treatment system and method. The wastewater treatment system has high integration degree and operates fully automatically. By adopting the combined treatment process of "advanced oxidation + evaporation", the COD concentration can be reduced to the maximum extent, high-efficiency denitrifying bacteria are introduced to improve the total nitrogen removal load, reduce the additional carbon source dosage, and reduce the operation cost. A high-concentration modified asphalt waterproofing membrane wastewater treatment method is established, so that the treated wastewater can meet the third-level standard of comprehensive wastewater discharge after being mixed with domestic sewage.

[0004] A high-concentration modified asphalt waterproofing membrane wastewater treatment system, comprising sequentially connected oil removal device, advanced oxidation device, evaporation device, high-efficiency denitrification device and control box for realizing automatic control of the wastewater treatment system. The oil removal device is used to realize oil-water separation and primary impurity removal. The advanced oxidation device realizes COD removal by primary sludge-water separation after strong oxidation, neutralization, coagulation and sedimentation. The evaporation device realizes gas-liquid separation by heating using different boiling points to realize secondary COD removal. The high-efficiency denitrification device introduces high-efficiency denitrifying bacteria to perform denitrification treatment on the condensed water generated by the evaporation device and performs secondary sludge-water separation.

[0005] As the preferred technical scheme of the above, the oil removal device comprises an oil removal reactor body, a water inlet, an oil-water separator, a pollution observation sight glass, an automatic regulating valve and a pollution pump; the modified asphalt waterproofing membrane wastewater enters the oil removal reactor body through the water inlet, and oil and water are separated by staying in the oil removal reactor body; the oil with lighter density floats on the surface and is removed by an oil scraper; the impurities with density greater than water are precipitated in a sludge hopper of the oil removal reactor body, and the impurities are removed through the automatic regulating valve and the pollution pump; the pollution observation sight glass is used to observe whether the impurities in the sludge hopper are completely removed; the oil-water separator is arranged at a water outlet of the oil removal reactor body, and the wastewater after oil removal enters the advanced oxidation device for further treatment.

[0006] As the preferred technical scheme of the above, the advanced oxidation device comprises a reaction tank, a neutralization tank, a flocculation tank, a sedimentation tank one, an overflow port, an aerator one, a stirrer one and a matched acid dosing system, an oxidizing agent dosing system, a catalyst dosing system, an alkali dosing system and a flocculant dosing system; the wastewater treated by the oil removal device enters the reaction tank; the reaction tank is provided with a pH detection sensor one; the acid dosing system is used to dose the reaction tank and create an acidic environment; the oxidizing agent dosing system and the catalyst dosing system are used to add oxidizing agents and catalysts; the water treated by the reaction tank enters the neutralization tank; the pH detection sensor two and the alkali dosing system are used to adjust the pH of the wastewater in the neutralization tank to neutral; then the wastewater enters the flocculation tank; the addition of flocculants forms solid flocs; finally, the wastewater enters the sedimentation tank one to realize mud-water separation; the clear liquid after reaction enters the evaporation device for further treatment through the overflow port.

[0007] As the preferred technical scheme of the above, the advanced oxidation device comprises a water inlet pump, a heater, a gas-liquid separator, a circulating pump, a water production pump and an evaporation device fixing support; the clear liquid separated by the sedimentation tank one of the advanced oxidation device enters the gas-liquid separator through the water inlet pump; the circulating pump is used to circulate the material and the heater is used to heat, so as to realize gas-liquid separation; gaseous water is condensed into condensed water through the gas-liquid separator, and then is delivered to the high-efficiency denitrification device through the water production pump.

[0008] As the preferred technical scheme, the high-efficiency denitrification device comprises an intermediate pool, a high-efficiency denitrification reaction pool, a sedimentation pool II, a clean water pool, a sludge return pump, a clear liquid return pump, an aerator II, an intermediate pool water collecting pipe and a water distribution pipe; the water produced by the evaporation device enters the intermediate pool through a water production pump; the intermediate pool is provided with a second stirrer; the second stirrer can mix the water of the clear liquid return pump and the evaporation production water uniformly, and then the water is collected through the intermediate pool water collecting pipe and enters the high-efficiency denitrification reaction pool through a check valve; the high-efficiency denitrification reaction pool is provided with a filler containing high-efficiency denitrification bacteria, and the bottom of the pool is provided with the aerator II for aeration of the high-efficiency denitrification bacteria; the aerator II is provided with the water distribution pipe; the water distribution pipe uniformly distributes the wastewater on the bottom of the high-efficiency denitrification reaction pool; meanwhile, the high-efficiency denitrification reaction pool is provided with a dissolved oxygen detection sensor, a pH detection sensor III, an ammonia nitrogen detection sensor and a nitrate nitrogen detection sensor for monitoring the reaction state of the high-efficiency denitrification reaction pool; the effluent of the high-efficiency denitrification reaction pool enters the sedimentation pool II through a flow pipe to realize secondary separation of sludge and water; the separated clear liquid enters the clean water pool; the separated sludge enters the high-efficiency denitrification reaction pool through the sludge return pump and the intermediate pool water collecting pipe, so that the bacteria are not lost, and the check valve can effectively prevent the sludge from entering the intermediate pool; the clean water of the clean water pool is returned to the intermediate pool through the clear liquid return pump, so that the water inflow load of the high-efficiency denitrification reaction pool is consistent, and the remaining clean water enters the next treatment unit.

[0009] As the preferred technical scheme, the control box is used for online monitoring of the pH value of the reaction pool, online monitoring of the pH value of the neutralization pool, online monitoring of the dissolved oxygen amount, the pH value, the ammonia nitrogen amount and the nitrate nitrogen amount of the high-efficiency denitrification reaction pool, and automatic control of the water pumps, valves, dosing systems and stirrers related to the oil removal device, the advanced oxidation device, the evaporation device and the high-efficiency denitrification device.

[0010] Compared with the prior art, the beneficial effects of the present application are: (1) Through the continuous operation of the device, the COD concentration of the wastewater can be reduced from about 21000 mg / L to about 1000 mg / L, and the ammonia nitrogen concentration can be reduced from about 4400 mg / L to about 50 mg / L, so that the mixed domestic sewage entering the comprehensive wastewater treatment system can meet the third level of the wastewater comprehensive discharge standard; (2) The device uses "advanced oxidation + evaporation" instead of "two-stage advanced oxidation", and the combination of this process combines the characteristics of advanced oxidation and evaporation in removing different types of COD, so that the COD concentration is reduced more thoroughly; (3) Compared with the traditional biochemical treatment system, by introducing high-efficiency denitrification bacteria, the device can not only improve the ammonia nitrogen removal load, but also effectively reduce the dosing amount of additional carbon source and reduce the operation cost. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the wastewater treatment system of the present application.

[0012] The reference signs are as follows: 1 - oil removal device, 1.1 - oil removal reactor body, 1.2 - water inlet, 1.3 - oil-water separator, 1.4 - blowdown observation sight glass, 1.5 - automatic regulating valve, 1.6 - blowdown pump, 2 - advanced oxidation device, 2.1 - reaction tank, 2.2 - neutralization tank, 2.3 - flocculation tank, 2.4 - sedimentation tank I, 2.5 - overflow port, 2.6 - aerator I, 2.7 - stirrer I, 2.8 - acid dosing system, 2.9 - oxidant dosing system, 2.10 - catalyst dosing system, 2.11 - alkali dosing system, 2.12 - flocculant dosing system, 2.13 - pH detection sensor I, 2.14 - pH detection sensor II, 2.15 - aeration fan, 3 - evaporation device, 3.1 - water inlet pump, 3.2 - heater, 3.3 - gas-liquid separator, 3.4 - circulating pump, 3.5 - water production pump, 3.6 - evaporation device fixing support, 4 - high-efficiency denitrification device, 4.1 - intermediate water tank, 4.2 - high-efficiency denitrification reaction tank, 4.3 - sedimentation tank II, 4.4 - clear water tank, 4.5 - sludge backflow pump, 4.6 - clear liquid backflow pump, 4.7 - aerator II, 4.8 - intermediate water tank collecting pipe, 4.9 - water distribution pipe, 4.10 - stirrer II, 4.11 - check valve, 4.12 - filler, 4.13 - dissolved oxygen detection sensor, 4.14 - pH detection sensor III, 4.15 - ammonia nitrogen detection sensor, 4.16 - nitrate nitrogen detection sensor, 5 - control box. DETAILED DESCRIPTION

[0013] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the present application.

[0014] The present application will be described in further detail below with reference to the drawings: A high-concentration modified asphalt waterproofing membrane wastewater treatment system, comprising an oil removal device 1, an advanced oxidation device 2, an evaporation device 3, a high-efficiency denitrification device 4 connected in sequence, and a control box 5 for realizing automatic control of the wastewater treatment system; The oil removal device 1 is used to realize oil and water separation and preliminary removal of suspended matter; the advanced oxidation device 2 realizes primary removal of COD through strong oxidation, neutralization, coagulation and sedimentation; the evaporation device 3 realizes gas and liquid separation through heating by using different boiling points, thereby realizing secondary removal of COD; the high-efficiency denitrification device 4 introduces high-efficiency denitrification bacteria to denitrify the condensed water generated by the evaporation device 3 and realize secondary mud and water separation.

[0015] In the embodiment, the oil removal device 1 comprises an oil removal reactor body 1.1, a water inlet 1.2, an oil-water separator 1.3, a sewage observation sight glass 1.4, an automatic regulating valve 1.5 and a sewage pump 1.6; the modified asphalt waterproofing membrane wastewater enters the oil removal reactor body 1.1 through the water inlet 1.2, realizes oil and water separation by staying in the oil removal reactor body 1.1, the oil with a lighter density floats on the surface and is removed by an oil scraper, the impurities with a density greater than water are precipitated in a sludge hopper of the oil removal reactor body 1.1, the impurities are removed through the automatic regulating valve 1.5 and the sewage pump 1.6, the sewage observation sight glass 1.4 is used to observe whether the impurities in the sludge hopper are completely removed, and the oil-water separator 1.3 is arranged at a water outlet of the oil removal reactor body 1.1, so that the wastewater after oil removal enters the advanced oxidation device 2 for further treatment.

[0016] In the embodiment, the advanced oxidation device 2 comprises a reaction tank 2.1, a neutralization tank 2.2, a flocculation tank 2.3, a sedimentation tank 2.4, an overflow port 2.5, an aerator 2.6, a stirrer 2.7 and its matching acid dosing system 2.8, oxidant dosing system 2.9, catalyst dosing system 2.10, alkali dosing system 2.11 and flocculant dosing system 2.12; the wastewater treated by the oil removal device 1 enters the reaction tank 2.1, a pH detection sensor 2.13 is arranged in the reaction tank 2.1, the acid dosing system 2.8 is used to add an acid to the reaction tank 2.1 to create an acidic environment, and then the oxidant dosing system 2.9 and the catalyst dosing system 2.10 are used to add an oxidant and a catalyst, the water treated by the reaction tank 2.1 enters the neutralization tank 2.2, the pH of the wastewater in the neutralization tank 2.2 is adjusted to neutral by the pH detection sensor 2.14, the alkali dosing system 2.11 and then enters the flocculation tank 2.3, the flocculant is added to form solid flocs, and finally enters the sedimentation tank 2.4 to realize mud and water separation, and the clear liquid after reaction enters the evaporation device 3 for further treatment.

[0017] In the embodiment, the evaporation device 3 comprises a water inlet pump 3.1, a heater 3.2, a gas-liquid separator 3.3, a circulating pump 3.4, a water production pump 3.5, and an evaporation device fixing support 3.6; the clear liquid separated from the sedimentation tank 2.4 of the advanced oxidation device 2 enters the gas-liquid separator 3.3 through the water inlet pump 3.1, circulates the material through the circulating pump 3.4 and heats through the heater 3.2, realizes gas-liquid separation, and the gaseous water is condensed into condensed water through the gas-liquid separator 3.3, and then is delivered to the high-efficiency denitrification device 4 through the water production pump 3.5.

[0018] In the embodiment, the high-efficiency denitrification device 4 comprises an intermediate water tank 4.1, a high-efficiency denitrification reaction tank 4.2, a sedimentation tank 2 4.3, a clear water tank 4.4, a sludge backflow pump 4.5, a clear liquid backflow pump 4.6, an aerator 2 4.7, an intermediate water tank water collecting pipe 4.8, and a water distribution pipe 4.9; the water produced by the evaporation device 3 enters the intermediate water tank 4.1 through the water production pump 3.5, the intermediate water tank 4.1 is provided with a second stirrer 4.10, the second stirrer 4.10 can mix the water of the clear liquid backflow pump 4.6 and the evaporation production water uniformly, then collects through the intermediate water tank water collecting pipe 4.8 and enters the high-efficiency denitrification reaction tank 4.2 through the check valve 4.11, the high-efficiency denitrification reaction tank 4.2 is provided with a filler 4.12 containing high-efficiency denitrification bacteria, the bottom of the tank is provided with the aerator 2 4.7 and aerates the high-efficiency denitrification bacteria, the water distribution pipe 4.9 is arranged on the aerator 2 4.7, and the water distribution pipe 4.9 uniformly distributes the wastewater on the bottom of the high-efficiency denitrification reaction tank 4.2, at the same time, the high-efficiency denitrification reaction tank 4.2 is provided with a dissolved oxygen detection sensor 4.13, a pH detection sensor 3 4.14, an ammonia nitrogen detection sensor 4.15, and a nitrate nitrogen detection sensor 4.16 and is used for monitoring the reaction state of the high-efficiency denitrification reaction tank 4.2, the reaction water of the high-efficiency denitrification reaction tank 4.2 enters the sedimentation tank 2 4.3 through the overflow pipe and realizes secondary sludge-water separation, the clear liquid after separation enters the clear water tank 4.4, and the sludge after separation enters the high-efficiency denitrification reaction tank 4.2 through the sludge backflow pump 4.5 and the intermediate water tank water collecting pipe 4.8, so that the bacteria are not lost, and the setting of the check valve 4.11 can effectively prevent the sludge from entering the intermediate water tank 4.1; the clear water of the clear water tank 4.4 is backflowed to the intermediate water tank 4.1 through the clear liquid backflow pump 4.6, so that the water inlet load of the high-efficiency denitrification reaction tank 4.2 is consistent, and the remaining clear water enters the next processing unit.

[0019] In the embodiment, the control box 5 is used for online monitoring of pH values of the reaction tank 2.1 and the neutralization tank 2.2, online monitoring of the dissolved oxygen amount, the pH value, the ammonia nitrogen amount and the nitrate nitrogen amount of the high-efficiency denitrification reaction tank 4.2, and automatic control of the water pumps, valves, dosing systems and mixers related to the oil removal device 1, the advanced oxidation device 2, the evaporation device 3 and the high-efficiency denitrification device 4.

[0020] The working principle of the embodiment is as follows.

[0021] The modified asphalt waterproofing membrane wastewater enters the oil removal reactor body 1.1 through the water inlet 1.2, and oil and water are separated by staying in the oil removal reactor body 1.1 for a long time. The oil with a relatively light density floats on the surface. An oil scraper is arranged at the upper end of the oil removal reactor body 1.1 to remove the floating oil. A mud bucket is arranged at the bottom end of the oil removal reactor body 1.1. The impurities with a density greater than that of water are precipitated in the mud bucket. The outside of the mud bucket is connected with a blowdown observation sight glass 1.4, an automatic regulating valve 1.5 and a blowdown pump 1.6. The impurities in the mud bucket are removed through the automatic regulating valve 1.5 and the blowdown pump 1.6. The blowdown observation sight glass 1.4 is used to observe whether the impurities in the mud bucket are removed completely. An oil-water separator 1.3 is arranged at the water outlet of the oil removal reactor body 1.1. The wastewater after oil removal enters the advanced oxidation device 2 for further treatment through the oil-water separator 1.3. The advanced oxidation tank in the advanced oxidation device 2 is provided with a water inlet. The wastewater treated by the oil removal device 1 enters the reaction tank 2.1 through the water inlet of the advanced oxidation tank. The reaction tank 2.1 is connected with an acid dosing system 2.8, an oxidant dosing system 2.9 and a catalyst dosing system 2.10. A pH detection sensor one 2.13 is arranged in the tank body. An aerator one 2.6 is arranged at the bottom of the tank body and is connected with an aeration fan 2.15. The acid dosing system 2.8 is used to add an acid to the reaction tank 2.1 to create an acidic environment. Then, the oxidant dosing system 2.9 and the catalyst dosing system 2.10 are used to add an oxidant and a catalyst. The wastewater in the reaction tank 2.1 is fully mixed through the aeration and mixing of the aerator one 2.6 and the aeration fan 2.15. The wastewater treated by the reaction tank 2.1 enters the neutralization tank 2.2. The neutralization tank 2.2 is provided with a pH detection sensor three and is connected with an alkali dosing system. The pH of the wastewater in the neutralization tank 2.2 is adjusted to be neutral through the cooperation of the pH detection sensor one 2.13 and the alkali dosing system. Then, the wastewater enters the flocculation tank 2.3. The flocculation tank 2.3 is provided with a mixer one 2.7 and is connected with a flocculant dosing system 2.12. The flocculation tank 2.3 forms compact flocs through the addition of the flocculant and the mixing and stirring of the mixer one 2.7. Finally, the flocs enter the sedimentation tank one 2.4 to realize the separation of mud and water. The sedimentation tank one 2.4 is provided with a water outlet at the water outlet end. The clear liquid after the reaction enters the evaporation device 3 for further treatment through the water outlet. The evaporation device 3 is provided with an evaporation water inlet pump 3.1, the water outlet end of the evaporation water inlet pump 3.1 is connected with the water inlet end of a gas-liquid separator 3.3, the other end of the gas-liquid separator 3.3 is provided with a material circulating outlet, the outlet is connected with the inlet end of a circulating pump 3.4 through a heater 3.2, the outlet end of the circulating pump 3.4 is connected with the bottom return outlet of the gas-liquid separator 3.3, the heater 3.2 is provided with a condensed water outlet, the condensed water outlet is connected with an evaporation water production pump 3.5, the clear liquid separated from the sedimentation tank 2.4 of the advanced oxidation device 2 enters the gas-liquid separator 3.3 through the evaporation water inlet pump 3.1 of the evaporation device 3, the circulating material is heated by the heater 3.2 through the circulating pump 3.4, the gas-liquid separation is realized, the gaseous water is condensed to form condensed water through separation, and the condensed water is delivered to the high-efficiency denitrification device 4 through the evaporation water production pump 3.5.

[0022] The high-efficiency denitrification device 4 is provided with an intermediate water tank 4.1, a high-efficiency denitrification reaction tank 4.2, a sedimentation tank 2 4.3 and a clear water tank 4.4, the intermediate water tank 4.1 is provided with a second stirrer 4.10, the bottom of the tank is provided with an intermediate water tank water collecting pipe 4.8, the intermediate water tank water collecting pipe 4.8 is connected with a check valve 4.11, the check valve 4.11 is divided into two branches, one branch is connected with the sludge return pump 4.5 return end sludge outlet, the other branch is connected with the water distribution pipe 4.9 of the high-efficiency denitrification reaction tank 4.2, the water produced by the evaporation device 3 enters the intermediate water tank 4.1 through the water production pump 3.5, the intermediate water tank 4.1 is provided with the second stirrer 4.10, the water of the clear liquid return pump 4.6 and the evaporation water can be mixed uniformly, then collected through the intermediate water tank water collecting pipe 4.8 and enter the high-efficiency denitrification reaction tank 4.2 through the check valve 4.11, the setting of the check valve 4.11 can effectively prevent the sludge of the sludge return pump 4.5 from entering the intermediate water tank 4.1, the high-efficiency denitrification reaction tank 4.2 is provided with a filler 4.12 containing high-efficiency denitrification bacteria, the bottom of the tank is provided with an aerator 2 4.7 and carries out aeration for the high-efficiency denitrification bacteria, the aerator 2 4.7 is provided with the water distribution pipe 4.9, the water of the intermediate water tank 4.1 is uniformly distributed to the bottom through the water distribution pipe 4.9, and the tank is provided with a dissolved oxygen detection sensor 4.13, a pH detection sensor 3 4.14, an ammonia nitrogen detection sensor 4.15 and a nitrate nitrogen detection sensor 4.16, which are used for monitoring the reaction state of the high-efficiency denitrification reaction tank 4.2, the reaction water of the high-efficiency denitrification reaction tank 4.2 enters the sedimentation tank 2 4.3 through the overflow pipe to realize the separation of sludge and water, the clear liquid enters the clear water tank 4.4, the sludge of the sludge hopper enters the high-efficiency denitrification reaction tank 4.2 through the sludge return pump 4.5 and the intermediate water tank water collecting pipe 4.8, so that the bacteria are not lost; the clear water of the clear water tank 4.4 is returned to the intermediate water tank 4.1 through the clear liquid return pump 4.6, so that the water inlet load of the high-efficiency denitrification reaction tank 4.2 is consistent; The control box 5 is adjusted by the setting of the program, the pH control range of the reaction tank 2.1 is set, the reaction tank 2.1 is always in an acidic environment, the pH control range of the neutralization tank 2.2 is set, the neutralization tank 2.2 is always in a neutral environment, the data display of the online instruments such as dissolved oxygen, pH, ammonia nitrogen and nitrate nitrogen of the high-efficiency denitrification reaction tank 4.2 is displayed by the control box 5, whether the high-efficiency denitrification system is in a stable running state is judged, through the program setting of the control box 5, the one-key start-stop of the equipment such as the blowdown pump 1.6 and the blowdown valve of the oil removal device 1, the stirrer 2.7 of the advanced oxidation flocculation tank 2.3, the advanced oxidation aeration fan 2.15, the water inlet pump 3.1, the water production pump 3.5 and the circulating pump 3.4 of the evaporation device 3, and the stirrer 2 of the intermediate tank 4.1, the sludge backflow pump 4.5 and the clear liquid backflow pump 4.6 of the high-efficiency denitrification device 4 can be realized.

[0023] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high-concentration modified asphalt waterproofing membrane wastewater treatment system, characterized by: It includes a degreasing device, an advanced oxidation device, an evaporation device, a high-efficiency denitrification device and a control box for realizing automatic control of the wastewater treatment system connected in sequence; The oil removal device is used to achieve oil-water separation and perform preliminary removal of suspended matter; the advanced oxidation device performs a primary mud-water separation after strong oxidation, neutralization, coagulation, and precipitation to achieve primary COD removal; the evaporation device uses different boiling points to achieve gas-liquid separation through heating to achieve secondary COD removal; the high-efficiency denitrification device introduces high-efficiency denitrification bacteria to denitrify the condensed water generated by the evaporation device and perform secondary mud-water separation.

2. A high-concentration modified asphalt waterproofing membrane wastewater treatment system according to claim 1, characterized in that: The oil removal device includes an oil removal reactor body, a water inlet, an oil-water separator, a sewage observation mirror, an automatic regulating valve and a sewage pump; the wastewater from the modified asphalt waterproof membrane enters the oil removal reactor body through the water inlet, and is separated from the oil by staying in the oil removal reactor body. The oil with a lighter density floats on the surface and is removed by an oil scraper, while the impurities with a density greater than that of water are deposited in the sludge hopper of the oil removal reactor body, and the impurities are removed by the automatic regulating valve and the sewage pump. The sewage observation mirror is used to observe whether the impurities in the sludge hopper are completely removed. The oil-water separator is arranged at the water outlet of the oil removal reactor body, and the wastewater after oil removal enters the advanced oxidation device for further treatment after passing through the oil-water separator.

3. A high-concentration modified asphalt waterproofing membrane wastewater treatment system according to claim 2, characterized in that: The advanced oxidation device includes a reaction tank, a neutralization tank, a flocculation tank, a sedimentation tank, an overflow port, an aerator, a mixer, and its supporting acid dosing system, oxidant dosing system, catalyst dosing system, alkali dosing system, and flocculant dosing system; the wastewater treated by the oil removal device enters the reaction tank, which is provided with a pH detection sensor. The acid dosing system is used to add drugs to the reaction tank to create an acidic environment, and then the oxidant dosing system and the catalyst dosing system are used to add oxidants and catalysts. The water treated by the reaction tank enters the neutralization tank, and the pH of the wastewater in the neutralization tank is adjusted to neutral through the cooperation of the pH detection sensor and the alkali dosing system. The wastewater then enters the flocculation tank, and forms coagulated flocs by the addition of flocculants. Finally, the wastewater enters the sedimentation tank to achieve mud and water separation. The clear liquid after the reaction enters the evaporation device through the overflow port for further treatment.

4. A high-concentration modified asphalt waterproofing membrane wastewater treatment system according to claim 3, characterized in that: The evaporation device includes a water inlet pump, a heater, a gas-liquid separator, a circulation pump, a water production pump and a fixed bracket for the evaporation device; the clear liquid separated from the sedimentation tank of the advanced oxidation device enters the gas-liquid separator through the water inlet pump, circulates the material through the circulation pump and is heated by the heater to achieve gas-liquid separation, and the gaseous water is condensed through the gas-liquid separator to form condensed water, which is then transported to the high-efficiency denitrification device through the water production pump.

5. A high-concentration modified asphalt waterproofing membrane wastewater treatment system according to claim 4, characterized in that: The high-efficiency denitrification device includes an intermediate water tank, an high-efficiency denitrification reaction tank, a second sedimentation tank, a clear water tank, a sludge return pump, a clear liquid return pump, a second aerator, an intermediate water tank water collecting pipe and a water distribution pipe; the water produced by the evaporation device enters the intermediate water tank through the water production pump, and the intermediate water tank is provided with a second mixer. The second mixer can mix the water of the clear liquid return pump with the evaporated water evenly, and then collect it through the intermediate water tank water collecting pipe and enter the high-efficiency denitrification reaction tank after passing through a check valve. The high-efficiency denitrification reaction tank is provided with a filler containing high-efficiency denitrification bacteria, and the bottom of the tank is provided with the second aerator for aerating the high-efficiency denitrification bacteria. The water distribution pipe is arranged on the second aerator, and the water distribution pipe evenly distributes the wastewater on the bottom of the high-efficiency denitrification reaction tank. At the same time, the high-efficiency denitrification reaction tank body is provided with a dissolved oxygen detection sensor, a pH detection sensor 3, an ammonia nitrogen detection sensor and a nitrate nitrogen detection sensor and is used to monitor the reaction state of the high-efficiency denitrification reaction tank. The reaction effluent of the high-efficiency denitrification reaction tank enters the sedimentation tank 2 through the overflow pipe and realizes secondary mud and water separation. The clear liquid after separation enters the clear water tank. The separated sludge in the hopper passes through the sludge return pump and the intermediate water tank collecting pipe and then enters the high-efficiency denitrification reaction tank to prevent the loss of bacterial strains. At the same time, the setting of the check valve can effectively prevent the sludge from entering the intermediate water tank; the clean water in the clear water tank is returned to the intermediate water tank through the clear liquid return pump, so that the water inlet load of the high-efficiency denitrification reaction tank remains consistent, and the remaining clean water enters the next treatment unit.

6. A high-concentration modified asphalt waterproofing membrane wastewater treatment system according to claim 5, characterized in that: The control box is used for online monitoring of the pH value of the reaction tank, online monitoring of the pH value of the neutralization tank, online monitoring of the dissolved oxygen content, pH value, ammonia nitrogen content, and nitrate nitrogen content of the high-efficiency denitrification reaction tank, as well as automatic control of the water pumps, valves, dosing systems and mixers related to the deoiling device, advanced oxidation device, evaporation device and high-efficiency denitrification device.

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