CN113151862A

CN113151862A - Hypochlorous acid generator control method for ensuring stability of available chlorine in effluent

Info

Publication number: CN113151862A
Application number: CN202110242695.4A
Authority: CN
Inventors: 兰兵
Original assignee: Bidolong Environmental Technology Shanghai Co ltd
Current assignee: Bidolong Environmental Technology Shanghai Co ltd
Priority date: 2021-03-04
Filing date: 2021-03-04
Publication date: 2021-07-23

Abstract

The hypochlorous acid generator control method for ensuring the stability of the available chlorine in the effluent can control the concentration of the available chlorine within the allowable tolerance range of the required set value, and ensures the sterilization and disinfection effects. The invention comprises the following steps: the tap water firstly passes through a flowmeter of a hypochlorous acid generator, then is opened to a one-way valve through an electromagnetic valve and then enters an ejector, the electrolyte is conveyed to an electrolytic tank through a peristaltic pump, the flow of the electrolyte and the flow of the tap water are simultaneously controlled, the current of the electrolytic tank is controlled by a main board, and chlorine generated by electrolyzing the electrolyte enters the ejector and is mixed with the tap water to form subacidity hypochlorous acid water.

Description

Hypochlorous acid generator control method for ensuring stability of available chlorine in effluent

Technical Field

The invention relates to the technical field of water disinfection, in particular to a control method of a hypochlorous acid generator for ensuring the stability of effective chlorine of effluent.

Background

People's awareness of disinfection is further improved. According to the state health and wellness committee, a chlorine-containing disinfectant can effectively inactivate viruses. The subacid hypochlorous acid water is one of the most safe and effective disinfectants, but most hypochlorous acid water generators in the market are not very stable at present, and are particularly unstable in effective chlorine concentration control, so that the sterilization and disinfection effects are difficult to control, and the ideal state is difficult to achieve.

Disclosure of Invention

In order to overcome the defects of the technology, the invention aims to provide a hypochlorous acid generator control method for ensuring the stability of the available chlorine of effluent.

The technical scheme adopted by the invention is as follows: a hypochlorous acid generator control method for ensuring the stability of available chlorine in effluent comprises the following steps: the tap water firstly passes through a flowmeter of a hypochlorous acid generator, then is opened to a one-way valve through an electromagnetic valve and then enters an ejector, the electrolyte is conveyed to an electrolytic tank through a peristaltic pump, the flow of the electrolyte and the flow of the tap water are simultaneously controlled, the current of the electrolytic tank is controlled by a main board, and chlorine generated by electrolyzing the electrolyte enters the ejector and is mixed with the tap water to form subacidity hypochlorous acid water.

The specific process for controlling the flow of the dielectric liquid and the flow of tap water comprises the following steps: the control mainboard displays the water flow value fed back by the flowmeter on a display panel, judges the difference value between the feedback value and a set value, and controls the peristaltic pump to reduce or stop conveying the dielectric liquid when the difference value is positive; when the difference value is negative, the main board is controlled to control the peristaltic pump to increase and convey the dielectric liquid, and further the stability of the effective chlorine concentration of the effluent is kept as much as possible under the condition of the set current; the flow of tap water is determined according to the flow of the dielectric liquid, the flow of the dielectric liquid and the flow of the tap water are in a linear relation, an upper limit value and a lower limit value of the required inflow water and the electrolysis current are set, when the inflow water flow value exceeds the set upper limit value or lower limit value, the electrolytic tank is closed, the machine is stopped for alarming, and when the electrolysis current value exceeds the set upper limit value or lower limit value, the machine is also stopped for alarming.

Compared with the prior art, the invention has the following beneficial effects: the hypochlorous acid generator control method for ensuring the stability of the available chlorine in the effluent can control the concentration of the available chlorine within the allowable tolerance range of the required set value, and ensures the sterilization and disinfection effects.

Drawings

FIG. 1 is a schematic flow chart of the control of the present invention;

FIG. 2 is a graph of water flow versus current flow for the present invention.

Detailed Description

The invention is described in detail below with reference to the figures and the specific embodiments.

The effective chlorine concentration of the slightly acidic hypochlorous acid water is related to the water flow and the electrolytic current value of the hypochlorous acid generator, so that the hypochlorous acid water with stable concentration can be obtained by controlling the stability of the water flow and the electrolytic current value.

As shown in figure 1, a control method of a hypochlorous acid generator for ensuring the stability of available chlorine in effluent comprises the following steps: the tap water firstly passes through a flowmeter of a hypochlorous acid generator, then is opened to a one-way valve through an electromagnetic valve and then enters an ejector, the electrolyte is conveyed to an electrolytic tank through a peristaltic pump, the flow of the electrolyte and the flow of the tap water are simultaneously controlled, the current of the electrolytic tank is controlled by a main board, and chlorine generated by electrolyzing the electrolyte enters the ejector and is mixed with the tap water to form subacidity hypochlorous acid water.

Further, the specific process of controlling the flow rate of the dielectric liquid and the flow rate of the tap water is as follows: the control main board displays the water flow value fed back by the flowmeter on the display board, the control main board judges the difference value between the feedback value and the set value, and when the difference value is positive, the control main board controls the peristaltic pump to reduce or stop conveying the dielectric liquid; when the difference value is negative, the control main board controls the peristaltic pump to increase and convey the dielectric liquid, and further controls the output water to keep the effective chlorine concentration stable under the condition of the set current; the flow of tap water is determined according to the flow of the dielectric liquid, the flow of the dielectric liquid and the flow of the tap water are in a linear relation, an upper limit value and a lower limit value of required inflow water and electrolysis current are set, when the inflow water flow value exceeds the set upper limit value or lower limit value, the electrolytic cell is closed, the machine is stopped and an alarm is given, and when the electrolysis current value exceeds the set upper limit value or lower limit value, the machine is also stopped and an alarm is given.

In practical application, part of using scenes cannot guarantee the stability of the inflow water flow, so that the concentration of the hypochlorous acid water is unstable, and the inflow water flow value is added into the closed-loop control.

As shown in fig. 2. In the coordinate system, Q represents inflow, C represents electrolysis current, and the control main board controls the inflow to be in a linear relation with the electrolysis current C, namely C equals KQ. Therefore, the current is controlled to change along with the inflow flow in a normal range, and the amount of the electrolytic bath entering the dielectric liquid is further controlled, so that double closed-loop control is formed, and the slightly acidic hypochlorous acid water with stable concentration is still output under the condition of inflow flow change.

The above embodiments are based on the technical solution of the present invention, and detailed implementation and specific operation procedures are given, but the scope of the present invention is not limited to the above embodiments.

Claims

1. A hypochlorous acid generator control method for ensuring the stability of available chlorine in effluent is characterized by comprising the following steps: the tap water firstly passes through a flowmeter of a hypochlorous acid generator, then is opened to a one-way valve through an electromagnetic valve and then enters an ejector, the electrolyte is conveyed to an electrolytic tank through a peristaltic pump, the flow of the electrolyte and the flow of the tap water are simultaneously controlled, the current of the electrolytic tank is controlled by a main board, and chlorine generated by electrolyzing the electrolyte enters the ejector and is mixed with the tap water to form subacidity hypochlorous acid water.

2. The control method of hypochlorous acid generator for ensuring the stability of available chlorine in effluent water of claim 1, wherein the specific process of controlling the flow of the dielectric liquid and the flow of tap water comprises the following steps: the control mainboard displays the water flow value fed back by the flowmeter on a display panel, judges the difference value between the feedback value and a set value, and controls the peristaltic pump to reduce or stop conveying the dielectric liquid when the difference value is positive; when the difference value is negative, the control main board controls the peristaltic pump to increase and convey the dielectric liquid, and further controls the output water to keep the effective chlorine concentration stable as much as possible under the condition of the set current; the flow of tap water is determined according to the flow of the dielectric liquid, the flow of the dielectric liquid and the flow of the tap water are in a linear relation, an upper limit value and a lower limit value of required inflow water and electrolysis current are set, when the inflow water flow value exceeds the set upper limit value or lower limit value, the electrolytic tank is closed, the machine is stopped for alarming, and when the electrolysis current value exceeds the set upper limit value or lower limit value, the machine is also stopped for alarming.