Gas separation method for water treatment gas separation system based on ORP monitoring

Abstract

The application discloses a water treatment gas distribution system based on ORP monitoring, which comprises an ORP detector for detecting the oxidation-reduction potential value of sewage, a gas distribution box with an air inlet and an air outlet, a plurality of gas distribution devices arranged in the gas distribution box, each of the gas distribution devices comprising a plurality of electromagnetic valves arranged side by side, a vortex flowmeter connected to the air outlet of the gas distribution box for counting the output gas flow, a pressure transmitter connected to the air inlet of the gas distribution box for monitoring the air inlet pressure value, and a controller for controlling the opening and closing of the electromagnetic valves in one or more of the gas distribution devices according to the monitoring signal of the ORP detector, wherein the ORP detector, the gas distribution box, the vortex flowmeter and the pressure transmitter are electrically connected to the controller. The application also discloses a gas distribution method of the water treatment gas distribution system. The application greatly improves the precision control level of the oxidation-reduction water treatment technology, thereby improving the treatment effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sewage treatment, in particular to a gas distribution method of a water treatment gas distribution system based on ORP monitoring. BACKGROUND

[0002] The ORP value is the difference between the oxidation-reduction potential of the indicating electrode and the oxidation-reduction potential of the comparison electrode in the liquid, which can give a comprehensive index to the oxidation-reduction state of the whole system. If the ORP value is low, it indicates that the content of reducing substances or organic pollutants in the wastewater treatment system is high, and the concentration of dissolved oxygen is low, and the reducing environment is dominant. If the ORP value is high, it indicates that the concentration of organic pollutants in the wastewater is low, and the concentration of dissolved oxygen or oxidizing substances is high, and the oxidation environment is dominant. Therefore, how to adjust the air distribution according to the ORP value of the aerobic tank is a problem to be solved at present. SUMMARY

[0003] In order to solve the problems of the prior art, the present application provides a gas distribution method of a water treatment gas distribution system based on ORP monitoring, characterized in that it comprises:

[0004] Step 1) Set three groups of ORP value intervals, the three groups of ORP value intervals are first interval, second interval, third interval and fourth interval from low to high, and use an ORP detector to detect the oxidation-reduction potential value in the wastewater. When the value of the ORP detector is in the fourth interval, the gas distribution box stops working;

[0005] Step 2) When the value of the ORP detector is in the first interval, control the gas distribution device to open one group of electromagnetic valves through the controller;

[0006] Step 3) When the value of the ORP detector is in the second interval, control the gas distribution device to open two groups of electromagnetic valves at the same time through the controller;

[0007] Step 4) When the value of the ORP detector is in the third interval, control the gas distribution device to open three groups of electromagnetic valves at the same time through the controller;

[0008] Step 5) When the value of the ORP detector is higher than the maximum value of the third interval or lower than the minimum value of the first interval, the system alarms;

[0009] The value of the first interval is -200 to 200, the value of the second interval is 200 to 600, the value of the third interval is 600 to 1200, and the value of the fourth interval is -200 to -100;

[0010] The water treatment gas distribution system comprises:

[0011] The gas distribution box has an air inlet and an air outlet, and a plurality of gas distribution devices are arranged in the gas distribution box. Each gas distribution device comprises a plurality of electromagnetic valves arranged side by side;

[0012] a vortex flowmeter connected to the outlet of the gas distribution tank for counting the output gas flow;

[0013] a pressure transmitter connected to the inlet of the gas distribution tank for monitoring the inlet pressure value;

[0014] a controller for controlling the opening and closing of one or more solenoid valves in the gas distribution device according to the monitoring signal of the ORP detector, the ORP detector, the gas distribution tank, the vortex flowmeter and the pressure transmitter are all electrically connected to the controller.

[0015] Further, each of the gas distribution devices has an inlet end and an outlet end, the inlet ends of each of the gas distribution devices are collectively connected to the inlet of the gas distribution tank, and the inlet ends of each of the gas distribution devices are respectively connected to the outlet ends through three groups of solenoid valves.

[0016] Further, a temperature sensor is arranged at the inlet of the gas distribution tank, and the temperature sensor is electrically connected to the controller for detecting the inlet temperature, and if the temperature is too high, an alarm is displayed.

[0017] In addition, the application also provides another gas distribution method of a water treatment gas distribution system, which comprises the following steps:

[0018] Step 1) setting a preset running time and a preset stopping time for each of the gas distribution devices;

[0019] Step 2) setting the number of open solenoid valves in each of the gas distribution devices.

[0020] Further, the preset running time and the preset stopping time are both 30-60 minutes.

[0021] The application has the advantages that the gas distribution method of the water treatment gas distribution system based on ORP monitoring greatly improves the precision control level of the oxidation-reduction water treatment technology, thereby improving the treatment effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a structural schematic diagram of a gas distribution tank in the water treatment gas distribution system based on ORP monitoring of the application.

[0023] In the figure, 10 is a gas distribution tank, 101 is an inlet, 11 is a solenoid valve, and 12 is a backup gas distribution device. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. EMBODIMENT

[0025] Reference Figure 1The embodiment provides a water treatment gas distribution system based on ORP monitoring, which comprises: an ORP detector for detecting the oxidation-reduction potential value in sewage; a gas distribution box with a gas inlet and a gas outlet, wherein a plurality of gas distribution devices are arranged in the gas distribution box, each gas distribution device comprises a plurality of electromagnetic valves arranged side by side; a vortex flowmeter connected to the gas outlet of the gas distribution box for counting the output gas flow; a pressure transmitter connected to the gas inlet of the gas distribution box for monitoring the inlet pressure value; and a controller for controlling the opening and closing of the electromagnetic valves in one or more gas distribution devices according to the monitoring signal of the ORP detector; wherein the ORP detector, the gas distribution box, the vortex flowmeter and the pressure transmitter are electrically connected to the controller.

[0026] Specifically, according to actual conditions, the gas distribution devices are divided into nine paths, among which eight paths are commonly used, and the other path is used as a standby gas distribution device 12. Each gas distribution device has a gas inlet end and a gas outlet end, and the gas inlet end and the gas outlet end can also be provided with multiple gas inlet ends and gas outlet ends. According to actual conditions, different numbers of gas inlet ends and gas outlet ends are selected, and the sealing is not used. The gas inlet ends of each gas distribution device are connected to the gas inlet 101 of the gas distribution box 10, and the gas inlet ends of each gas distribution device are connected to the gas outlet ends through three groups of electromagnetic valves 11 respectively. The gas outlet ends of each gas distribution device are connected to the wastewater pool.

[0027] In order to detect the temperature at the gas inlet 101, a temperature sensor is arranged at the gas inlet, and the temperature sensor is electrically connected to the controller. The controller of the present application adopts PLC control. Embodiment

[0028] The embodiment provides a gas distribution method of the water treatment gas distribution system based on ORP monitoring in embodiment 1. The gas distribution system of the present application further comprises a display screen. First, three groups of ORP value intervals are set on the display screen. The three groups of ORP value intervals are sequentially the first interval, the second interval and the third interval from low to high. The value of the first interval is -200 to 200, the value of the second interval is 200 to 600, and the value of the third interval is 600 to 1200. When the value of the ORP detector is in the first interval, the controller controls the gas distribution device to open one group of electromagnetic valves. When the value of the ORP detector is in the second interval, the controller controls the gas distribution device to open two groups of electromagnetic valves at the same time. When the value of the ORP detector is in the third interval, the controller controls the gas distribution device to open three groups of electromagnetic valves at the same time. When the value of the ORP detector is higher than the maximum value of the third interval or lower than the minimum value of the first interval, the system alarms.

[0029] In addition, when setting the ORP value interval, a fourth interval is further set. The value of the fourth interval is -100 to -200. When the value of the ORP detector is in -200 to -1000, the gas distribution box stops working. When the ORP value is lower than -200, an alarm is displayed, prompting to increase the aeration amount. Embodiment

[0030] The embodiment also provides a gas distribution method of the water treatment gas distribution system based on ORP monitoring in Embodiment 1. First, the multi-path gas distribution device is respectively provided with a preset running time and a preset stopping time. According to the actual situation, the preset running time and the preset stopping time are both 30 minutes. The opening number of the electromagnetic valve in each path of the gas distribution device is set. One group can be opened, or two groups can be opened at the same time, or three groups can be opened at the same time. Of course, full closing can also be set.

[0031] The two modes in Embodiment 2-3 can be switched to each other. The nine-path gas distribution device can be switched manually and automatically. Any one path of the gas distribution device can be directly opened manually on the display screen. In addition, the temperature of the temperature sensor, the gas flow output by the vortex flowmeter, and the total pipe gas pressure value output by the pressure transmitter are displayed on the display screen.

[0032] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or equivalently replace part of the technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made shall be included in the protection scope of the present application.

Claims

1. A gas separation method for a water treatment gas separation system based on ORP monitoring, characterized in that, include: Step 1) Set three sets of ORP value ranges. The three sets of ORP value ranges are the first range, the second range, the third range and the fourth range in order from low to high. Use an ORP detector to detect the oxidation-reduction potential value in the wastewater. When the value of the ORP detector is within the fourth range, the gas separator stops working. Step 2) When the value of the ORP detector is within the first range, the controller controls the gas distribution device to open a set of solenoid valves. Step 3) When the value of the ORP detector is within the second range, the controller controls the gas distribution device to open two sets of solenoid valves simultaneously. Step 4) When the ORP detector value is within the third range, the controller controls the gas distribution device to open the three sets of solenoid valves simultaneously. Step 5) When the value of the ORP detector is higher than the maximum value of the third interval or lower than the minimum value of the first interval, the system alarms. The first interval has a value of -200 to 200, the second interval has a value of 200 to 600, the third interval has a value of 600 to 1200, and the fourth interval has a value of -200 to -100. The water treatment gas distribution system includes: The air distribution box has an air inlet and an air outlet. The air distribution box is equipped with a multi-way air distribution device. Each air distribution device includes multiple solenoid valves arranged in parallel. A vortex flow meter is connected to the outlet of the gas distribution box to count the output gas flow rate. A pressure transmitter is connected to the air inlet of the gas distribution box to monitor the air inlet pressure value; The controller is used to control the opening and closing of the solenoid valves in one or more of the gas distribution devices according to the monitoring signal of the ORP detector. The ORP detector, the gas distribution box, the vortex flow meter and the pressure transmitter are all electrically connected to the controller.

2. The gas separation method for a water treatment gas separation system based on ORP monitoring according to claim 1, characterized in that: Each of the gas distribution devices has an inlet end and an outlet end. The inlet end of each gas distribution device is connected to the inlet of the gas distribution box, and the inlet end of each gas distribution device is connected to the outlet end through three sets of solenoid valves.

3. The gas separation method for a water treatment gas separation system based on ORP monitoring according to claim 1, characterized in that: A temperature sensor is installed at the air inlet of the air distribution box, and the temperature sensor is electrically connected to the controller.

4. A gas separation method for a water treatment gas separation system based on ORP monitoring, characterized in that, Includes the following steps: Step 1) Set the preset running time and preset stopping time for each of the multi-channel gas distribution devices; Step 2) Set the number of solenoid valves to be opened in each gas distribution device.

5. The gas separation method for a water treatment gas separation system based on ORP monitoring according to claim 4, characterized in that: The preset running time and preset stopping time are both 30-60 minutes.

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