Water treatment system suitable for iCER-Diesel host

Abstract

A water treatment system suitable for an iCER-Diesel host is characterized in that host iCER waste gas cleaning, scavenging box discharging and air cooler cleaning discharging water is firstly discharged into a buffer tank through gravity, the PH value of a medium in the tank is measured through a PH sensor of the buffer tank, and a NaOH daily cabinet unit injects a NaOH solution into the buffer tank for acid-base neutralization according to a measurement result of the PH sensor of the buffer tank. The neutralized medium enters a zero discharge cabin, and the medium entering the zero discharge cabin needs to be lighted to a water treatment device for treatment through an iCER water treatment discharge pump. The treated medium residues are lighted to an iCER residue bin, and clean water is detected by an oil content analyzer and discharged or returned to a zero discharge bin. According to the method, the requirements of the iCER-Diesel main engine on discharged water treatment in the operation process and the requirements of the IMO on TierIII emission regulations are met, and it can be guaranteed that the ship can operate for more than 14 days at the full load in a zero-emission area. The sailing time and distance of the ship in a zero emission area are greatly improved, and the reliability and economical efficiency of ship operation are guaranteed.

Description

Technical Field

[0001] The invention belongs to the field of ship construction and design, and in particular relates to a water treatment system suitable for an iCER-Diesel main engine. Background Art

[0002] WinGD iCER Diesel main engine is the latest product launched by WinGD. In order to adapt to the increasingly stringent environmental protection requirements of dual-fuel ship low-pressure gas system main engine, it is equipped with iCER Diesel system.

[0003] iCER stands for intelligent Control by Exhaust Recycling, which means intelligent exhaust gas circulation control in Chinese. The design concept of WinGD X92DF-iCER Diesel system is to wash and cool part of the exhaust gas from the main engine and then return it to the main engine supercharger, so that the carbon dioxide in the exhaust gas replaces part of the oxygen in the original scavenging air, lowers the intake temperature, and reduces the oxygen content concentration in the scavenging air, thereby achieving the purpose of reducing NOX emissions and meeting Tier III requirements.

[0004] The main function of the water treatment system is to clean the exhaust gas generated by the main engine iCER-Diesel when running iCER, ensuring that the cooling water and cleaning water circulating in the exhaust cooling system meet certain cleanliness requirements. At the same time, it is also necessary to collect and treat the main engine scavenging box discharge water and air cooler discharge water during the operation of the iCER system. The design of the water treatment system should be adjusted according to the actual ship requirements, specific tanks and equipment layout.

[0005] In order to meet the requirements of the iCER-Diesel main engine for the water treatment system, and for some large container ship projects, the main engine power is large, resulting in a large amount of air cooler discharge water, and the ship's cruising time in the zero-emission area is long, which will result in a larger iCER discharge tank capacity. However, since the discharge port of the main engine air cooler is located at a low position and gravity discharge is required to the iCER discharge tank, this requires the iCER discharge tank to be arranged at a position lower than the discharge port of the air cooler, that is, in the double bottom area of ​​the engine room. However, the space in the double-bottom area is limited, and it is impossible to arrange an overly large iCER discharge tank. Therefore, it is necessary to introduce a larger zero-emission tank and solve this problem through a special logic control solution. Summary of the invention

[0006] In order to solve the above problems, the present invention provides a water treatment system suitable for the iCER-Diesel host, aiming to achieve the purpose of cleaning and treating the exhaust gas generated by the host iCER-Diesel when the iCER is running. The technical solution adopted is: A water treatment system suitable for an iCER-Diesel main engine. The main engine iCER exhaust gas cleaning, scavenging box discharge water, and main engine scavenging air cooler cleaning discharge water are gravity discharged to a buffer tank. The NaOH daily cabinet unit injects NaOH solution into the buffer tank. The treated medium in the buffer tank is gravity discharged to the iCER discharge cabinet. The NaOH daily cabinet unit injects NaOH solution into the iCER discharge cabinet for acid-base neutralization. The neutralized medium is transferred to a zero emission tank. The medium entering the zero emission tank is transferred to a water treatment device through an iCER water treatment discharge pump for treatment. The water treatment device is connected to a dosing unit. The dosing unit regularly doses medicine into the water treatment device. The clean water treated by the water treatment device is directly discharged or transferred to the zero emission tank. The residue treated by the water treatment device is discharged to the iCER slag tank. The main engine iCER exhaust gas cleaning, scavenging box discharge water, and main engine scavenging air cooler discharge water are treated. The treated residue is discharged to the iCER slag tank, and the clean water can be directly discharged to the side or stored in the zero-discharge tank. The water treatment device needs to be connected to fresh water for backup and control air for automatic control. The dosing unit is used to regularly add drugs to the water treatment device, and expired drugs need to be discharged to the iCER slag tank by gravity. The iCER slag tank is used to store the residue treated by the water treatment device. The iCER slag tank is connected to the iCER slag pump, which discharges the residue in the iCER slag tank to the shore.

[0007] The liquid level control of the iCER discharge cabinet and zero-emission tank adopts low liquid level control. An iCER discharge cabinet float switch is installed at the position of 30% of the tank capacity of the iCER discharge cabinet. In large container projects, due to the large capacity of the main engine and the high number of days the ship cruises in the zero-emission area, the tank capacity requirements are relatively high. A zero-emission tank low-level float switch is installed at the 10m3 liquid level position of the zero-emission tank. The zero-emission tank low-level float switch stops the operation of the iCER water treatment discharge pump and closes the solenoid valve and the water treatment device. A zero-emission tank high-level float switch is installed at the 50m3 liquid level position of the zero-emission tank. The zero-emission tank high-level float switch starts the iCER water treatment discharge pump and opens the solenoid valve and the water treatment device.

[0008] The above-mentioned water treatment system suitable for the iCER-Diesel main engine, further, the buffer tank outlet is connected to the iCER discharge cabinet, the NaOH daily cabinet unit is respectively connected to the buffer tank inlet and the iCER discharge cabinet inlet, the iCER discharge cabinet outlet is connected to the zero emission tank and the water treatment device in sequence, the water treatment device is connected to the oil analyzer and the electric three-way valve in sequence, one branch of the electric three-way valve is connected to the outboard, and the other branch is connected to the zero emission tank, and the water treatment device outlet is also connected to the iCER slag tank.

[0009] The NaOH storage cabinet is connected to the NaOH daily cabinet unit through the NaOH delivery pump. The NaOH storage cabinet is equipped with a NaOH storage cabinet heating pipe and a NaOH storage cabinet temperature sensor. The NaOH daily cabinet unit is provided with a liquid NaOH daily cabinet high-level float switch and a NaOH daily cabinet low-level float switch. When the liquid level of the NaOH daily cabinet unit is low, the NaOH daily cabinet low-level float switch starts the NaOH delivery pump to add NaOH solution. When the liquid level of the NaOH daily cabinet unit is high, the NaOH daily cabinet high-level float switch stops the NaOH delivery pump to add NaOH solution.

[0010] An iCER water treatment discharge pump is installed on the pipeline from the zero emission tank to the water treatment device, and a zero emission tank transfer pump is installed on the pipeline from the iCER discharge cabinet to the zero emission tank. The water treatment device is connected to the dosing unit, which is connected to the iCER slag tank. The iCER discharge cabinet float switch controls the zero emission tank transfer pump.

[0011] The above-mentioned water treatment system is suitable for the iCER-Diesel main engine. Furthermore, the clean water treated by the water treatment device is tested by an oil analyzer. If it is less than 15ppm, it can be discharged to the side, and if it is greater than 15ppm, it will return to the zero emission tank under the control of the electric three-way valve.

[0012] The above-mentioned water treatment system is suitable for the iCER-Diesel host. Furthermore, the capacity of the iCER discharge tank is greater than 100m3.

[0013] The above-mentioned water treatment system suitable for the iCER-Diesel main engine, further, a manual three-way valve and a sampling valve are sequentially arranged on the passage leading to the outside of the ship from the electric three-way valve, and the branch pipe in the manual three-way valve is connected to the zero-emission tank. The manual three-way valve is manually controlled by the crew. After the ship enters the zero-emission area, the medium treated by the water treatment device cannot be discharged overboard. The medium that meets the discharge requirements needs to be returned to the zero-emission tank for temporary storage and then discharged overboard after the ship leaves the zero-emission area. The sampling valve is used to sample the medium that meets the discharge requirements.

[0014] The above-mentioned water treatment system suitable for the iCER-Diesel host, further, an iCER discharge cabinet PH sensor is installed on the iCER discharge cabinet, and a buffer tank PH sensor is installed on the buffer tank, and the buffer tank PH sensor controls the NaOH daily cabinet unit. The buffer tank PH sensor detects the PH value of the medium in the buffer tank, and the iCER discharge cabinet PH sensor detects the PH value of the medium in the iCER discharge cabinet. The buffer tank PH sensor and the iCER discharge cabinet PH sensor control the NaOH daily cabinet unit, and acid-base neutralization is performed by adding NaOH solution.

[0015] The above-mentioned water treatment system suitable for the iCER-Diesel host machine, further, a NaOH storage cabinet is provided with a NaOH storage cabinet shore valve.

[0016] The above-mentioned water treatment system is suitable for the iCER-Diesel main engine. Furthermore, there are two zero-emission tanks, which are symmetrically arranged on the left and right sides. There is a pipeline connecting the two zero-emission tanks, and an iCER discharge pump and an iCER discharge pump normally closed valve are arranged on the pipeline. The iCER discharge pump discharges the medium in the zero-emission tank to the side of the ship in the non-discharge restricted area. Before discharge, it needs to be tested by an oil analyzer and is allowed to be discharged only if it meets the discharge standards. The iCER discharge pump normally closed valve is in a normally closed state when the system is operating normally.

[0017] The above-mentioned water treatment system is applicable to the iCER-Diesel host. Furthermore, the water treatment device is connected to fresh water and control air. The water treatment device needs to be connected to fresh water for backup and control air for automatic control.

[0018] The above-mentioned water treatment system is suitable for the iCER-Diesel host, and further, when the liquid level in the zero-emission tank increases from less than 30% to more than 30%, the zero-emission tank transfer pump is started after a delay of 1 hour.

[0019] The present invention meets the requirements of the iCER-Diesel main engine for the treatment of discharged water during operation, ensures the normal operation of the iCER-Diesel main engine, and the emission of flue gas and water can meet the emission regulations of IMO for Tier III. Especially for some large container ships, by setting a temporary transfer iCER discharge cabinet on the inner bottom and arranging a zero-emission tank that meets the capacity requirements, it can ensure that the ship can operate at full load for more than 14 days in the zero-emission area. It greatly improves the sailing time and distance of the ship in the zero-emission area, and ensures the reliability and economy of the ship's operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a system schematic diagram of the present invention; Among them, 1-water treatment device, 2-dosing unit, 3-iCER slag tank, 5-iCER slag pump, 6-oil analyzer, 7-electric three-way valve, 8-manual three-way valve, 9-sampling valve, 10-zero emission tank, 11-zero emission tank low level float switch, 12-zero emission tank high level float switch, 13-zero emission tank solenoid valve, 14-iCER water treatment discharge pump, 15-iCER discharge pump, 17-iCER discharge pump normally closed valve, 18-NaOH storage cabinet, 19-N aOH storage cabinet temperature sensor, 20-NaOH storage cabinet heating pipe, 21-NaOH delivery pump, 22-NaOH storage cabinet shore valve, 23-NaOH daily cabinet unit, 24-NaOH daily cabinet low-level float switch, 25-NaOH daily cabinet high-level float switch, 26-buffer tank, 27-buffer tank PH sensor, 28-iCER discharge cabinet, 29-iCER discharge cabinet PH sensor, 30-iCER discharge cabinet float switch, 31-zero emission tank delivery pump. DETAILED DESCRIPTION

[0021] The present invention will be further described in conjunction with the accompanying drawings.

[0022] like Figure 1 The water treatment system for the iCER-Diesel main engine shown in the figure has a buffer tank outlet connected to an iCER discharge cabinet. The discharge cabinet is located in the bottom area of ​​the engine room and is used to temporarily store the main engine iCER exhaust gas cleaning, scavenging box discharge water and main engine scavenging air cooler discharge water, and neutralize the acid and alkali. The NaOH daily cabinet unit is connected to the buffer tank inlet and the iCER discharge cabinet inlet respectively. The iCER discharge cabinet outlet is connected to the zero emission tank and the water treatment device in turn. The water treatment device is connected to the oil analyzer and the electric three-way valve in turn. One branch of the electric three-way valve is connected to the outboard, and the other branch is connected to the zero emission tank. Since the volume of the zero emission tank is too large, a single tank cannot meet the requirements. Therefore, a zero emission tank is designed on each side. In order to ensure the reliability of the system, two independent pipelines are used to transfer the water to the two zero emission tanks on the left and right sides through the zero emission tank transfer pump. There are two zero emission tanks, and there is a pipeline connecting the two zero emission tanks. The iCER discharge pump normally closed valve is set on the pipeline. The two zero emission tanks are symmetrically arranged on the left and right sides. The outlet of the water treatment device is also connected to an iCER slag chamber, and the iCER slag chamber is connected to an iCER slag discharge pump.

[0023] The NaOH daily cabinet unit is connected to the buffer tank inlet and the iCER discharge cabinet inlet respectively. The NaOH storage cabinet is connected to the NaOH daily cabinet unit through the NaOH delivery pump. The NaOH storage cabinet is equipped with a NaOH storage cabinet heating pipe and a NaOH storage cabinet temperature sensor. The NaOH storage cabinet temperature sensor monitors the temperature of the NaOH storage cabinet 18 to prevent the NaOH solution from crystallizing or deteriorating. When the NaOH solution temperature is lower than 10°C, the NaOH storage cabinet heating pipe is started for heating. When the NaOH solution temperature is higher than 30°C, the NaOH storage cabinet heating pipe is stopped for heating.

[0024] The outlet of the iCER discharge cabinet is connected to the zero-emission tank and the water treatment device in turn. The water treatment device is connected to the oil analyzer and the electric three-way valve in turn. One branch of the electric three-way valve is connected to the outboard, and the other branch is connected to the zero-emission tank. After the oil analyzer detects, oil less than 15ppm can be discharged to the side, and oil greater than 15ppm is returned to the zero-emission tank under the control of the electric three-way valve. The outlet of the water treatment device is also connected to the iCER slag tank.

[0025] The pipeline from the zero-emission tank to the water treatment device is equipped with an iCER water treatment discharge pump, and the pipeline from the iCER discharge cabinet to the zero-emission tank is equipped with a zero-emission tank delivery pump. The water treatment device is connected to a dosing unit, which is connected to the iCER slag tank. The float switch of the iCER discharge cabinet controls the zero-emission tank delivery pump. The dosing unit is within 5m of the water treatment device 1, and expired drugs are discharged to the iCER slag tank by gravity.

[0026] During the operation of the host iCER system, the host iCER exhaust gas cleaning, scavenging box discharge and air cooler cleaning discharge water will first be discharged by gravity into the buffer tank 26, and the pH value of the medium in the tank will be measured by the buffer tank pH sensor 27. Based on the measurement result of the buffer tank pH sensor, NaOH solution is injected into the buffer tank 26 by the NaOH daily cabinet unit 23 for acid-base neutralization.

[0027] The NaOH solution in the NaOH daily cabinet unit 23 is controlled by the side-mounted float switch installed on the unit body to start and stop the NaOH delivery pump 21, so as to achieve the purpose of transferring the NaOH solution in the NaOH storage cabinet 18 to the NaOH daily cabinet unit 23. The NaOH daily cabinet unit is provided with a NaOH daily cabinet low-level float switch and a NaOH daily cabinet high-level float switch. The NaOH daily cabinet low-level float switch is used to start the NaOH delivery pump 21 to add NaOH solution when the liquid level of the NaOH daily cabinet unit 23 is low. The NaOH daily cabinet high-level float switch is used to stop the NaOH delivery pump 21 to add NaOH solution when the liquid level of the NaOH daily cabinet unit 23 is high.

[0028] The treated medium in the buffer tank is gravity discharged to the iCER discharge cabinet 28. The discharge chamber is also equipped with an iCER discharge cabinet PH sensor 29, which comprehensively measures the PH value in the discharge cabinet and controls the NaOH daily cabinet unit 23 to inject NaOH solution into the iCER discharge cabinet 28 for acid-base neutralization.

[0029] The iCER discharge tank 28 is equipped with an iCER discharge tank float switch 30 , and the liquid level switch is used to control the zero emission tank transfer pump 31 to transfer the medium of the iCER discharge tank 28 to the zero emission tank 10 .

[0030] The liquid level control of the iCER discharge tank 28 is a low liquid level maintenance logic, which is to prevent the water treatment device 1 from stopping operation for a long time due to the lack of media to be treated, because the main engine also needs the water treated by the water treatment device to keep the main engine running during operation. Therefore, a float switch 30 is provided at the 30% position of the tank capacity of the iCER discharge tank 28. The float switch is used to control the start and stop of the zero-discharge tank delivery pump 31. When the liquid level changes from high to low, the low liquid level of the float switch is triggered, and the zero-discharge tank delivery pump 31 stops running. When the liquid level in the zero-discharge tank increases from less than 30% to more than 30%, the high liquid level of the float switch is triggered, and the zero-discharge tank delivery pump 31 starts running after a delay of 1 hour.

[0031] The medium entering the zero-emission tank 10 needs to be transferred to the water treatment device 1 for treatment through the iCER water treatment discharge pump 14. For the zero-emission tank 10, since the tank capacity design is very limited, in order to ensure that there is enough tank capacity when entering the zero-emission area, it is also necessary to adopt a low liquid level maintenance logic. A zero-emission tank low-level float switch 11 is installed at the 10m³ liquid level position in the tank, which has a low-level pump stop function, used to stop the iCER water treatment discharge pump 14, close the solenoid valve 13 and the water treatment device 1, and prevent the equipment from running dry. A zero-emission tank high-level float switch is installed at the 50m³ liquid level position, which has a high-level pump start function, used to start the iCER water treatment discharge pump 14, open the solenoid valve 13 and the water treatment device 1, and ensure that the zero-emission tank 10 can be in a lower liquid level state, so as to avoid the zero-emission tank capacity being unable to meet the water storage needs of the ship in the zero-emission area due to excessive water in the zero-emission tank 10.

[0032] After the medium entering the water treatment device 1 is treated, the medium residue will be transferred to the iCER slag tank 3. The water treatment device 1 needs to be regularly dosed through the dosing unit 2, and expired medicines will also be discharged to the iCER slag tank 3. The medium in the iCER slag tank 3 will be discharged to the shore through the iCER slag pump 5 at the appropriate time.

[0033] After the clean water treated by the water treatment device 1 is tested by the oil analyzer 6, the clean water with less than 15ppm can be discharged to the side, and the clean water with more than 15ppm is returned to the zero discharge tank 10 under the control of the electric three-way valve 7 and treated again by the water treatment device 1. When entering the zero discharge area, the crew needs to manually control the three-way valve 8 to return the clean water with less than 15ppm to the zero discharge tank 10 for storage. When leaving the zero discharge area, the iCER discharge pump 15 can be turned on to discharge the treated clean water to the back side after the oil analyzer 6 is tested.

[0034] Calculation of storage capacity of water treatment system: iCER vent cabinet: DTm 3 .

[0035] A (water treatment plant capacity): 15m 3 / h.

[0036] B (Water treatment device used to treat the internal circulating water of iCER exhaust cooling system) dialysis water volume: 2.5m 3 / h.

[0037] Generally, the system recommends that the solution in the discharge tank should be sufficient for the water treatment device to operate for 4 hours. Therefore, the recommended minimum volume is: DT = (15-2.5) x 4 = 50m 3 .

[0038] Considering the height of the iCER discharge tank and the tank capacity margin outside the low level alarm device, it is recommended to increase the margin by 50%. The tank capacity of the iCER discharge tank should be greater than 100m 3 .

[0039] iCER slag chamber: STm 3 .

[0040] The slag discharge ratio of the water treatment device is about 0.5%, and the number of days a ship cruises in the zero-emission area is 14 days. Therefore, the recommended minimum volume is: ST=15 x 0.5% x 14 x 24=25.2m 3 .

[0041] Zero Emission Module: ZTm 3 .

[0042] Maximum water discharge volume of main engine scavenge air cooler in NCR state: 9.765 m 3 / h.

[0043] Maximum dialysis water volume of the host in NCR state: 1.032 m 3 / h.

[0044] ZT=(9.765+1.032)x 14 x 24=3628m 3 。

Claims

1. A water treatment system suitable for iCER-Diesel host, characterized in that: The main engine iCER exhaust gas cleaning, scavenging box discharge water, and main engine scavenging air cooler cleaning discharge water are gravity discharged to the buffer tank (26), the NaOH daily cabinet unit (23) injects NaOH solution into the buffer tank, and the treated medium in the buffer tank is gravity discharged to the iCER discharge cabinet (28). The NaOH daily cabinet unit injects NaOH solution into the iCER discharge cabinet to neutralize the acid and alkali, and the neutralized medium is transferred to the zero emission tank (10). The medium entering the zero emission tank is transferred to the water treatment device (1) through the iCER water treatment discharge pump (14) for treatment. The water treatment device is connected to a dosing unit (2), and the dosing unit regularly feeds medicine into the water treatment device. The clean water treated by the water treatment device is directly discharged or transferred to the zero emission tank. The residue treated by the water treatment device is discharged to the iCER slag tank; The liquid level control of the iCER discharge tank and the zero-discharge tank adopts low liquid level control. An iCER discharge tank float switch (30) is arranged at the position of 30% of the tank capacity of the iCER discharge tank. A zero-discharge tank low-level float switch (11) is arranged at the zero-discharge tank 10m3 liquid level position. The zero-discharge tank low-level float switch stops the operation of the iCER water treatment discharge pump (14) and closes the solenoid valve (13) and the water treatment device (1). A zero-discharge tank high-level float switch (12) is arranged at the zero-discharge tank 50m3 liquid level position. The zero-discharge tank high-level float switch starts the operation of the iCER water treatment discharge pump (14) and opens the solenoid valve (13) and the water treatment device (1).

2. A water treatment system suitable for an iCER-Diesel host according to claim 1, characterized in that: The outlet of the buffer tank (26) is connected to the iCER discharge tank (28), the NaOH daily cabinet unit (21) is respectively connected to the inlet of the buffer tank and the inlet of the iCER discharge tank, the outlet of the iCER discharge tank is sequentially connected to the zero discharge tank and the water treatment device, the water treatment device is sequentially connected to the oil content analyzer (6) and the electric three-way valve (7), one branch of the electric three-way valve is connected to the outboard, and the other branch is connected to the zero discharge tank, the outlet of the water treatment device is also connected to the iCER slag tank (3), and the iCER slag tank is connected to the iCER slag pump (5); The NaOH storage cabinet is connected to the NaOH daily cabinet unit via a NaOH delivery pump (21); the NaOH storage cabinet (18) is provided with a NaOH storage cabinet heating pipe (20) and a NaOH storage cabinet temperature sensor (19); a liquid NaOH daily cabinet high-level float switch (25) and a NaOH daily cabinet low-level float switch (24) are arranged in the NaOH daily cabinet unit; An iCER water treatment discharge pump (14) is arranged on the pipeline from the zero-discharge tank to the water treatment device, a zero-discharge tank delivery pump (31) is arranged on the pipeline from the iCER discharge cabinet to the zero-discharge tank, the water treatment device is connected to a dosing unit (2), the dosing unit is connected to the iCER slag tank, and the iCER discharge cabinet float switch controls the zero-discharge tank delivery pump.

3. A water treatment system suitable for an iCER-Diesel host according to claim 2, characterized in that: The clean water treated by the water treatment device (1) is tested by an oil analyzer (6). If the oil content is less than 15 ppm, it can be discharged to the side. If the oil content is greater than 15 ppm, it is returned to the zero discharge tank (10) under the control of the electric three-way valve (7).

4. A water treatment system suitable for an iCER-Diesel host according to claim 1, characterized in that: The capacity of the iCER discharge tank is greater than 100m3.

5. A water treatment system suitable for an iCER-Diesel host according to claim 2, characterized in that: A manual three-way valve (8) and a sampling valve (9) are arranged in sequence on the passage leading to the outside of the ship from the electric three-way valve, and a branch pipeline in the manual three-way valve is connected to the zero emission tank.

6. A water treatment system suitable for an iCER-Diesel host according to claim 1, characterized in that: An iCER discharge cabinet PH sensor (29) is installed on the iCER discharge cabinet, and a buffer tank PH sensor (27) is installed on the buffer tank. The buffer tank PH sensor controls the NaOH daily cabinet unit.

7. A water treatment system suitable for an iCER-Diesel host according to claim 1, characterized in that: The NaOH storage tank is provided with a NaOH storage tank shore discharge valve (22).

8. A water treatment system suitable for an iCER-Diesel host according to claim 1, characterized in that: There are two zero-emission tanks, which are symmetrically arranged on the left and right sides. A pipeline is connected between the two zero-emission tanks, and an iCER discharge pump (15) and an iCER discharge pump normally closed valve (17) are arranged on the pipeline.

9. A water treatment system suitable for an iCER-Diesel host according to claim 1, characterized in that: The water treatment unit is connected to fresh water and controlled air.

10. A water treatment system suitable for an iCER-Diesel host according to claim 2, characterized in that: When the liquid level in the zero discharge tank increases from less than 30% to more than 30%, the zero discharge tank transfer pump (31) is started after a delay of 1 hour.

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