Sewage treatment method for zero-emission ecological toilet

Abstract

The invention provides a sewage treatment method for a zero-emission ecological toilet, which comprises the following steps: after a system is powered on, a vacuum switch detects the vacuum degree in a vacuum tank, if the vacuum degree does not reach a set requirement, a vacuum sewage pump starts to establish vacuum, and when the vacuum degree in the vacuum tank reaches a set value, the vacuum sewage pump stops working, and the system is in a standby state; urine in the urinal directly flows into the sewage lifting device by means of gravity, when the liquid level in the sewage lifting box triggers the floating ball control switch and the urine sewage pump to start to work, sewage is discharged into the sewage box, and the one-way valve is arranged at the sewage discharging end of the urine sewage pump to prevent the sewage from flowing back; according to the zero-discharge ecological toilet, compared with common sanitary indirect water, 90% or above is achieved, a municipal pipe network is not needed, zero discharge of sewage is achieved, and meanwhile black water is collected for resource utilization.

Description

Technical Field

[0001] The present invention belongs to the field of toilets, and particularly relates to a sewage treatment method for a zero-emission ecological toilet. Background Art

[0002] With the development of society and the improvement of urban sanitation conditions, toilets are inseparable from residents' lives. At present, most toilets use flushing toilets, which discharge sewage into sewage treatment plants through sewer pipes. This not only consumes a huge amount of water, but also has sewage pipes everywhere, resulting in high construction and maintenance costs. Moreover, feces and urine are directly discharged with water, which not only requires higher sewage discharge standards, leading to increased energy consumption and costs for sewage treatment, but also causes waste of high-quality fertilizer resources, which goes against the development concept of building a resource-saving and recycling society. In addition, the wash water in the toilet and the gray water in the mop sink are also directly discharged into the sewage pipe, causing a great waste. Summary of the Invention

[0003] In view of the above technical problems, the present invention provides a sewage treatment method for a zero-emission ecological toilet. The toilet is equipped with a vacuum collection system and a waterless urinal, which can minimize the flushing water volume to the greatest extent, thereby generating high-concentration feces and urine, and collecting the high-concentration feces and urine into a waste bin for resource utilization. The toilet is also equipped with a gray water treatment system, which treats the gray water in the mop sink and washbasin into reclaimed water for flushing the toilet, further reducing the waste of water resources.

[0004] To achieve the above object, the technical solution adopted by the present invention is as follows: A sewage treatment method for a zero-emission ecological toilet. After the system is powered on, the vacuum switch detects the vacuum degree in the vacuum tank. If the set requirement is not met, the vacuum sewage pump starts to establish vacuum. When the vacuum degree in the vacuum tank reaches the set value, the vacuum sewage pump stops working, and the system is in a standby state. When the system triggers the flush button, the flush valve performs high-pressure flushing on the toilet, then the negative pressure sewage valve opens, and the sewage is discharged into the vacuum tank under the action of negative pressure. The negative pressure sewage valve closes, and the flush valve performs secondary water replenishment on the toilet. If the vacuum degree in the vacuum tank is lower than the set value of the vacuum switch, the vacuum sewage pump starts again to establish vacuum to make the vacuum degree reach the set value, and at the same time discharges the sewage into the waste bin, and the system is in a standby state. The sewage pipeline of the vacuum sewage pump is connected to a three-way pipe. During the sewage discharge and vacuum establishment process, the waste gas enters the exhaust pipe, and the sewage enters the waste bin under the action of gravity. The waste gas does not enter the waste bin and is discharged high into the air through the exhaust pipe, reducing the overflow of malodorous gas in the waste bin, thereby reducing the odor.

[0005] Preferably, for the sewage treatment method of the zero-emission ecological toilet, the urine in the urinal directly flows into the sewage lifting device by gravity. When the liquid level height in the sewage lifting tank triggers the float control switch, the urine sewage pump starts to work and discharges the sewage into the dirt box. A check valve is set at the sewage discharge end of the urine sewage pump to prevent sewage backflow; When the sewage lifting device fails, the sewage can overflow through the overflow pipeline A.

[0006] Preferably, for the sewage treatment method of the zero-emission ecological toilet, to prevent the dirt in the dirt box from depositing, an interval time is set, and the sewage pump automatically starts to circulate the dirt in the dirt box; When the system detects that the dirt in the dirt box reaches 80% of the liquid level through the liquid level sensor A, the system will remotely remind and notify for sewage discharge; when the dirt reaches 100% of the liquid level, the system will remotely alarm and the toilet will stop being used. When the dirt treatment system discharges sewage, connect the manure truck pipeline to the switch valve C, open the switch valve C, and press the sewage discharge button. The system first closes the electric valve. After the electric valve is closed, the sewage pump starts to work and discharges the dirt into the manure truck. During the sewage discharge process, press the sewage discharge button again or the liquid level in the dirt box reaches 0% or the pressure sensor A detects that the pressure is lower than the set pressure during the sewage discharge process, and the sewage discharge stops.

[0007] Preferably, for the sewage treatment method of the zero-emission ecological toilet, the grey water generated by the washbasin and mop pool is roughly filtered by the filter basket under the action of gravity and enters the grey water tank. When the liquid level of the grey water tank reaches the high liquid level of the liquid level sensor, the system detects whether the air flotation machine is full of water. If it is not full of water, the grey water pump starts to work, and the grey water is finely filtered through the filter and then discharged into the air flotation machine. During the drainage process, when the liquid level in the grey water tank reaches 0% or the pressure sensor D detects that the pressure is lower than the set pressure during the sewage discharge process, or the high liquid level switch in the air flotation machine detects water, the grey water pump stops working; When the system fails or there is too much grey water, the liquid level in the grey water tank triggers the alarm liquid level switch B, the system will remotely alarm, and at the same time, the excessive grey water is discharged through the overflow pipeline to ensure the normal use of the toilet.

[0008] Preferably, for the sewage treatment method of the zero-emission ecological toilet, when the high liquid level switch in the air flotation machine detects water, the dissolved air pump starts to work, pumps the grey water in the air flotation machine into the dissolved air tank, and then discharges the grey water dissolved with a large amount of air through the dissolved air release device. During this process, the pollutants in the grey water are adsorbed on the bubbles, and as the bubbles float up, the pollutants also float to the water surface to form floating scum. At the same time, the scraper starts to work, scrapes the floating scum to the floating scum area, enters the sewage lifting device through the slag discharge port and the floating scum inlet, and is finally discharged into the dirt box; When the air flotation time of the air flotation machine reaches the set value, the air flotation machine stops working. The system determines whether there is water in the ozone catalytic tank by detecting the liquid level switch A. If there is no water, the ventilation overflow switch valve opens, and the water inlet electric valve of the ozone catalytic tank opens. Under the action of gravity, the treated grey water enters the ozone catalytic tank until the air flotation machine detects that there is no water at the low liquid level switch, the ventilation overflow switch valve closes, and the water inlet electric valve of the ozone catalytic tank closes, and the drainage of the air flotation machine ends.

[0009] Preferably, in the sewage treatment method of the zero-emission ecological toilet, after the air flotation machine completes the drainage action, the ozone generator starts to work. Ozone enters the bottom of the ozone catalytic tank through the aeration head. During the rising process, ozone treats and disinfects the grey water. The catalyst accelerates the treatment of grey water. The waste gas in the ozone catalytic tank enters the exhaust pipe of the dirt box through the exhaust port, and is discharged into the air at high altitude after disinfecting and deodorizing the exhaust pipe; When the working time of the ozone catalytic tank reaches the set value, the system determines whether the middle water tank is full through the liquid level sensor C of the middle water treatment device. If the middle water tank is not full, the ventilation overflow switch valve opens, and the drainage electric valve of the ozone catalytic tank opens. Under the action of gravity, the treated middle water enters the middle water tank.

[0010] Preferably, in the sewage treatment method of the zero-emission ecological toilet, the middle water tank water supply system provides high-pressure water for the toilet. When the pressure sensor C detects that the pressure is lower than the set value, the middle water pump starts until the pressure reaches the set value. A middle water pressure tank is arranged on the water supply pipeline of the middle water supply system to reduce the water pressure fluctuation during toilet flushing, ensure the flushing pressure, and at the same time reduce the frequent start and stop of the middle water pump; When the liquid level sensor C detects that the liquid level in the tank is lower than the set value, the water replenishing valve connected to the water supply pipeline of the clean water tank water supply system opens to replenish water to the middle water treatment device until the set liquid level or water replenishing time is reached.

[0011] Preferably, in the sewage treatment method of the zero-emission ecological toilet, the clean water tank water supply system mainly provides high-pressure water for the mop sink and the washbasin. When the pressure sensor B detects that the pressure is lower than the set value, the clean water pump starts until the pressure reaches the set value. A clean water pressure tank A is arranged on the water supply pipeline of the clean water supply system to reduce the water pressure fluctuation when using the mop sink and the washbasin, and at the same time reduce the frequent start and stop of the clean water pump; When the liquid level sensor B detects that the liquid level is lower than the set value, the system will remotely alarm to notify water replenishment. During water replenishment, the water supply pipeline of the water replenishment vehicle is connected to the water injection port to start water replenishment. The air in the clean water tank is discharged through the overflow ventilation port. Observe the liquid level indicator B during the water replenishment process. When the 100% clean water tank liquid level indicator is on, stop water replenishment.

[0012] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The zero-emission ecological toilet of the present invention adopts a vacuum toilet and a waterless urinal, saving more than 90% of water.

[0013] The zero-emission ecological toilet of the present invention collects and treats the wash water and the grey water in the mop sink into reclaimed water for flushing the toilet, further saving water and realizing the recycling of grey water.

[0014] The zero-emission ecological toilet of the present invention collects the high-concentration feces and urine into a waste bin for resource utilization.

[0015] The zero-emission ecological toilet of the present invention does not require a municipal water supply pipe and a sewage pipe. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of the vacuum toilet system, the waterless urinal system and the waste bin of the present invention; Figure 2 It is a schematic structural diagram of the grey water treatment system of the present invention; Figure 3 It is a schematic structural diagram of the ozone catalytic box of the present invention; Figure 4 It is a schematic structural diagram of the water supply system of the clean water tank of the present invention; In the figure: 1. Vacuum toilet system; 11. Toilet; 12. Negative pressure sewage valve; 13. Switch valve A; 14. Flushing valve; 15. Water supply pipe; 16. Sewage pipe; 17. Vacuum tank; 18. Vacuum sewage pump; 19. Bypass pipe; 110. Vacuum switch; 111. Pressure gauge; 112. Switch valve B; 113. Flushing button; 2. Waste treatment system; 21. Exhaust pipe; 22. Pressure sensor A; 23. Sewage pump; 24. Waste bin; 25. Electric valve; 26. Switch valve C; 27. Liquid level indicator A; 28. Sewage discharge button; 29. Circulation port; 210. Circulation pipe; 211. Liquid level sensor A; 212. Three-way pipe.

[0017] 3. Waterless urinal system; 31. Urinal; 32. Sewage lifting device; 321. Alarm liquid level switch A; 322. Overflow pipeline A; 323. Float control switch; 324. Sewage lifting; 325. Urine sewage pump; 326. Check valve; 327. Scum inlet. 4. Water supply system of clean water tank; 41. Overflow vent; 42. Liquid level sensor B; 43. Water injection port; 44. Liquid level indicator B; 45. Emptying valve; 46. Clean water tank; 47. Switch valve D; 48. Clean water pump; 49. Pressure tank A; 410. Pressure sensor B; 5. Grey water treatment system; 51. Air flotation machine; 511. Scraper; 512. Dissolved air release device; 513. High liquid level switch; 514. Dissolved air tank; 515. Dissolved air pump; 516. Baffle; 517. Slag discharge port; 518. Low liquid level switch; 52. Ozone catalytic device; 521. Exhaust port; 522. Ventilation overflow switch valve; 523. Catalyst; 524. Liquid level switch A; 525. Aeration head; 526; Ozone catalytic tank drain electric valve; 527. Ozone generator; 528. Ozone catalytic tank inlet electric valve; 529. Ozone catalytic tank; 53. Intermediate water tank treatment device; 531. Overflow pipeline B; 532. Liquid level sensor C; 533. Make-up water valve; 534. Switch valve E; 535. Intermediate water pump; 536. Pressure tank B; 537. Pressure sensor C; 538. Intermediate water tank; 54. Grey water treatment device; 541. Alarm liquid level switch B; 542. Filter basket; 543. Overflow pipeline C; 544. Liquid level sensor D; 545. Pressure gauge; 546. Grey water tank; 547. Switch valve F; 548. Grey water pump; 549. Filter; 5410. Pressure sensor D; 55. Mop sink; 56. Washbasin. Specific embodiments

[0018] Next, the present invention will be specifically described through exemplary embodiments. However, it should be understood that, without further description, the elements, structures, and features in one embodiment can also be beneficially combined into other embodiments. A sewage treatment method for a zero-emission ecological toilet. For the sewage treatment method, refer to Figures 1 to 4 , and adopt: After the system is powered on, the vacuum switch 110 detects the vacuum degree in the vacuum tank 17. If it does not reach the set requirement, the vacuum sewage pump 18 starts to establish a vacuum. When the vacuum degree in the vacuum tank 17 reaches the set value, the vacuum sewage pump 18 stops working, and the system is in a standby state. When the system triggers the flush button 113, after the flush valve 14 performs a high-pressure flush on the toilet 11, the negative pressure sewage discharge valve 12 opens, and the dirt is discharged into the vacuum tank 17 under the action of negative pressure. The negative pressure sewage discharge valve 12 closes, and the flush valve 14 replenishes water to the toilet 11 for the second time. If the vacuum degree in the vacuum tank 17 is lower than the set value of the vacuum switch 110, the vacuum sewage pump 18 starts to establish a vacuum again to make the vacuum degree reach the set value, and at the same time discharges the dirt into the dirt box 2. The system is in a standby state. The sewage discharge pipeline of the vacuum sewage pump 18 is connected to the three-way pipe 212. During the sewage discharge and vacuum establishment process, the waste gas enters the exhaust pipe 21, and the dirt enters the dirt box 24 under the action of gravity. The waste gas does not enter the dirt box 24 and is discharged at a high altitude through the exhaust pipe 21, reducing the overflow of the malodorous gas in the dirt box 24, thereby reducing the odor. The urine in the urinal 31 directly flows into the sewage lifting device 32 by gravity. When the liquid level in the sewage lifting tank 324 triggers the float control switch 323, the urine sewage pump 325 starts to work and discharges the sewage into the dirt box 24. A check valve 326 is set at the sewage discharge end of the urine sewage pump 325 to prevent sewage backflow. When the sewage lifting device 32 fails, the sewage can overflow through the overflow pipeline A322 to ensure the usability of the urinal 31. To prevent the dirt from depositing in the dirt box 24, the sewage pump 23 is automatically started at set intervals to make the dirt in the dirt box flow in a cycle. When the system detects that the dirt in the dirt box 24 reaches 80% of the liquid level through the liquid level sensor A211, the system will remotely remind and notify for sewage discharge; when the dirt reaches 100% of the liquid level, the system will remotely alarm and the toilet will stop being used. When the dirt treatment system 2 discharges sewage, connect the manure truck pipeline to the switch valve C26 and open the switch valve C26. Press the sewage discharge button 28. The system first closes the electric valve 25. After the electric valve 25 is closed, the sewage pump 23 starts to work and discharges the dirt into the manure truck. During the sewage discharge process, if the sewage discharge button 28 is pressed again or the liquid level in the dirt box 24 reaches 0% or the pressure sensor A22 detects that the pressure is lower than the set pressure during the sewage discharge process, the sewage discharge stops. The grey water generated by the washbasin 56 and the mop sink 55 is roughly filtered by the filter basket 542 under the action of gravity and enters the grey water tank 546. When the liquid level of the grey water tank 546 reaches the high liquid level of the liquid level sensor 544, the system checks whether the dissolved air flotation machine 51 is full of water. If it is not full of water, the grey water pump 548 starts and discharges the grey water into the dissolved air flotation machine 51 after fine filtration through the filter 549. During the drainage process, if the liquid level in the grey water tank 546 reaches 0% or the pressure sensor D5410 detects that the pressure is lower than the set pressure during the sewage discharge process, or the high liquid level switch 513 in the dissolved air flotation machine 51 detects that there is water, the grey water pump 548 stops working. When the system fails or there is too much grey water, the liquid level in the grey water tank 546 triggers the alarm liquid level switch B541, and the system will remotely alarm. At the same time, the excessive grey water is discharged through the overflow pipeline 543 to ensure the normal use of the toilet. When the high liquid level switch 513 in the dissolved air flotation machine 51 detects that there is water, the dissolved air pump 515 starts to work, pumps the grey water in the dissolved air flotation machine 51 into the dissolved air tank 514, and then discharges the grey water dissolved with a large amount of air through the dissolved air release device 512. During this process, the pollutants in the grey water are adsorbed on the bubbles. As the bubbles float up, the pollutants also float to the water surface to form scum. At the same time, the scraper 511 starts to work, scrapes the scum to the scum area, and enters the sewage lifting device 32 through the slag discharge port 517 and the scum inlet 327, and is finally discharged into the dirt box 24. When the flotation time of the flotation machine 51 reaches the set value, the flotation machine stops working. The system determines whether there is water in the ozone catalytic tank 52 by detecting the liquid level switch A524. If there is no water, the ventilation overflow switch valve 522 is opened, and the water inlet electric valve 528 of the ozone catalytic tank is opened. Under the action of gravity, the treated grey water enters the ozone catalytic tank 529 until the flotation machine 51 detects that there is no water in the low liquid level switch 518, the ventilation overflow switch valve 522 is closed, and the water inlet electric valve 528 of the ozone catalytic tank is closed, and the drainage of the flotation machine 51 ends. After the flotation machine 51 completes the drainage action, the ozone generator 527 starts to work. Ozone enters the bottom of the ozone catalytic tank through the aeration head 525. The ozone treats and disinfects the grey water during the rising process. The catalyst 523 accelerates the treatment of the grey water. The waste gas in the ozone catalytic tank 52 enters the dirt box exhaust pipe 21 through the exhaust port 521, and is discharged into the air at high altitude after disinfecting and deodorizing the exhaust pipe 21. When the working time of the ozone catalytic tank reaches the set value, the system determines whether the middle water tank 538 is full through the liquid level sensor C532 of the middle water treatment device 53. If the middle water tank 538 is not full, the ventilation overflow switch valve 522 is opened, and the drainage electric valve 526 of the ozone catalytic tank is opened. Under the action of gravity, the treated middle water enters the middle water tank 538. The middle water tank water supply system 53 mainly provides high-pressure water for the toilet 11. When the pressure sensor C537 detects that the pressure is lower than the set value, the middle water pump 535 starts until the pressure reaches the set value. A middle water pressure tank 536 is set on the water supply pipeline of the middle water supply system 53 to reduce the water pressure fluctuation during the flushing of the toilet 11, ensure the flushing pressure, and at the same time reduce the frequent start and stop of the middle water pump 535. When the liquid level sensor C532 detects that the liquid level in the tank is lower than the set value, the water replenishing valve 533 connected to the water supply pipeline of the clear water tank water supply system 4 is opened to replenish water to the middle water treatment device 53 until the set liquid level or the water replenishing time is reached. The clear water tank water supply system 4 mainly provides high-pressure water for the mop sink 55 and the washbasin 56. When the pressure sensor B410 detects that the pressure is lower than the set value, the clear water pump 48 starts until the pressure reaches the set value. A clear water pressure tank 49A is set on the water supply pipeline of the clear water supply system 4 to reduce the water pressure fluctuation when using the mop sink 55 and the washbasin 56, and at the same time reduce the frequent start and stop of the clear water pump 48. When the liquid level sensor B42 detects that the liquid level is lower than the set value, the system will remotely alarm to notify water replenishment. During water replenishment, the water supply pipeline of the water replenishment vehicle is connected to the water injection port 43 to start water replenishment. The air in the clear water tank is discharged through the overflow ventilation port 41. Observe the liquid level indicator B44 during the water replenishment process. When the 100% clear water tank liquid level indicator is on, stop water replenishment.

[0019] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claimed rights.

Claims

1. A sewage treatment method for a zero-discharge ecological toilet, characterized in that: use: After the system is powered on, the vacuum switch detects the vacuum degree in the vacuum tank. If it does not meet the set requirements, the vacuum sewage pump starts to build vacuum. When the vacuum degree in the vacuum tank reaches the set value, the vacuum sewage pump stops working and the system is in standby mode. The system triggers the flush button, and after the flush valve flushes the toilet with high pressure, the negative pressure drain valve opens, and the waste is discharged into the vacuum tank under the action of negative pressure. The negative pressure drain valve closes, and the flush valve replenishes water to the toilet for the second time. If the vacuum degree of the vacuum tank is lower than the set value of the vacuum switch, the vacuum drain pump starts again to establish vacuum, so that the vacuum degree reaches the set value, and at the same time, the waste is discharged into the waste tank, and the system is in standby mode; The sewage pipeline of the vacuum sewage pump is connected to the three-way pipe. During the sewage discharge and vacuum establishment process, the exhaust gas enters the exhaust pipe, and the sewage enters the sewage box under the action of gravity. The exhaust gas does not enter the sewage box, but is discharged into the air through the exhaust pipe, reducing the overflow of the malodorous gas in the sewage box, thereby reducing the odor.

2. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized in that: The urine in the urinal flows directly into the sewage lifting device by gravity. When the liquid level in the sewage lifting tank triggers the float control switch, the urine sewage pump starts to work and discharges the sewage into the sewage tank. A one-way valve is set at the sewage discharge end of the urine sewage pump to prevent sewage backflow; When the sewage lifting device fails, sewage can overflow through overflow pipe A.

3. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized in that: To prevent the dirt from settling in the dirt tank, set an interval time and the sewage pump automatically starts to circulate the dirt in the dirt tank; When the system detects that the sewage in the sewage tank reaches 80% of the liquid level through the liquid level sensor A, the system will remotely remind and notify sewage discharge; when the sewage reaches 100% of the liquid level, the system will remotely alarm and the toilet will stop using. When the sewage treatment system discharges sewage, connect the manure truck pipeline to the switch valve C, and open the switch valve C, press the sewage discharge button, the system first closes the electric valve, and after the electric valve is closed, the sewage pump starts to start and discharge the sewage into the manure truck. During the sewage discharge process, the sewage discharge button is pressed again or the liquid level in the sewage tank reaches 0% or the pressure sensor A detects that the pressure is lower than the set pressure, and the sewage discharge stops.

4. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized in that: The grey water generated by the wash basin and mop pool is roughly filtered by the filter basket under the action of gravity and enters the grey water tank. When the liquid level in the grey water tank reaches the high liquid level of the liquid level sensor, the system detects whether the air flotation machine is full of water. If it is not full of water, the grey water pump starts to filter the grey water through the filter and then discharge it into the air flotation machine. When the liquid level in the grey water tank reaches 0% during the drainage process or the pressure sensor D detects that the pressure is lower than the set pressure during the sewage discharge process, or the high liquid level switch in the air flotation machine detects that there is water, the grey water pump stops working; In the event of a system failure or excessive grey water, the liquid level in the grey water tank triggers the alarm level switch B, and the system issues a remote alarm. At the same time, excess grey water is discharged through the overflow pipe to ensure normal use of the bathroom.

5. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized in that: When the high liquid level switch of the air flotation machine detects water, the dissolved air pump starts to work, pumping the gray water in the air flotation machine into the dissolved air tank, and then discharges the gray water dissolved in a large amount of air through the dissolved air releaser. In this process, the pollutants in the gray water are adsorbed on the bubbles. As the bubbles float, the pollutants also float to the water surface to form scum. At the same time, the scraper starts to work, hanging the scum to the scum area, and enters the sewage lifting device through the scum discharge port and the scum water inlet, and is finally discharged into the sewage tank; When the flotation time of the flotation machine reaches the set value, the flotation machine stops working. The system determines whether there is water in the ozone catalyst box by detecting the liquid level switch A. If there is no water, the ventilation overflow switch valve opens, and the ozone catalyst box water inlet electric valve opens. Under the action of gravity, the treated gray water enters the ozone catalyst box until the flotation machine detects that there is no water in the low liquid level switch, the ventilation overflow switch valve closes, the ozone catalyst box water inlet electric valve closes, and the flotation machine ends drainage.

6. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized by: When the air flotation machine completes the drainage action, the ozone generator starts to work, and the ozone enters the bottom of the ozone catalyst box through the aeration head. The ozone treats and disinfects the gray water during the rising process. The catalyst accelerates the gray water treatment. The waste gas in the ozone catalyst box enters the exhaust pipe of the dirt box through the exhaust port, and the exhaust pipe is disinfected and deodorized before being discharged into the air. When the working time of the ozone catalyst box reaches the set value, the system determines whether the grey water tank is full through the liquid level sensor C of the grey water treatment device. If the grey water tank is not full, the ventilation overflow switch valve opens, the ozone catalyst box drainage electric valve opens, and the treated grey water enters the grey water tank under the action of gravity.

7. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized by: The grey water tank water supply system provides high-pressure water for the toilet. When the pressure sensor C detects that the pressure is lower than the set value, the grey water pump starts to start until the pressure reaches the set value. A grey water pressure tank is installed on the water supply pipeline of the grey water supply system to reduce water pressure fluctuations when the toilet is flushed, ensure flushing pressure, and reduce the frequent start and stop of the grey water pump. When the liquid level sensor C detects that the liquid level in the tank is lower than the set value, the water replenishment valve connected to the water supply pipeline of the clean water tank water supply system opens to replenish water to the reclaimed water treatment device until the set liquid level or water replenishment time is reached.

8. The sewage treatment method of the zero-discharge ecological toilet according to claim 1 is characterized by: The clean water tank water supply system mainly provides high-pressure water for the mop pool and wash basin. When the pressure sensor B detects that the pressure is lower than the set value, the clean water pump starts to start until the pressure reaches the set value. A clean water pressure tank A is set on the water supply pipeline of the clean water supply system to reduce water pressure fluctuations when using the mop pool and wash basin, and reduce the frequent start and stop of the clean water pump; When the liquid level sensor B detects that the liquid level is lower than the set value, the system will remotely alarm and notify water replenishment. During water replenishment, the water supply pipeline of the water replenishment vehicle is connected to the water inlet, and water replenishment begins. The overflow ventilation port discharges the air in the clean water tank. During the water replenishment process, observe the liquid level indicator B. When 100% of the clean water tank liquid level indicator is on, stop replenishing water.

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