Online real-time detection device in sewage treatment process

Abstract

The utility model relates to the technical field of sewage detection, and discloses an on-line real-time detection device in a sewage treatment process, which comprises an ORP detection system and an AI intelligent dosing system, the ORP detection system comprises an ORP monitoring electrode (1) arranged at the water outlet end of a discharge tank or disinfection tank (10) and a standard electrode (2) arranged outside the tank; the ORP monitoring electrode (1) and the standard electrode (2) are respectively connected with an instrument box (3) through electric wires, the instrument box (3) is connected into a PLC cabinet (4) through a signal line, the PLC cabinet (4) is electrically connected with an AI intelligent dosing system, and the PLC cabinet (4) compares an ORP monitoring numerical value with a standard numerical value so as to control the frequency or quantity of sodium hypochlorite added by the AI intelligent dosing system; according to the detection device, the ORP detection system is matched with the AI intelligent dosing system, an ORP monitoring numerical value and a standard numerical value are compared in real time, continuous measurement is achieved, the AI intelligent dosing system is used for control, the medicament consumption cost can be saved, and environmental protection accidents are avoided to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewage detection technical field, concretely relates to an online real -time detection device in sewage treatment process. BACKGROUND

[0002] In the sewage treatment process, many parameters are involved. It is found by inquiring the over-standard discharge index of the sewage treatment plant that the over-standard reasons of the sewage treatment plant present regular changes. There are many over-standard discharge indexes, including fecal coliform bacteria, ammonia nitrogen, total phosphorus, suspended particulate matter, heavy metals and the like. From 2012 to the present, fecal coliform bacteria, ammonia nitrogen and total phosphorus have become three typical pollutants that trouble the sewage treatment plant. Among them, fecal coliform bacteria are ranked first, not only do not meet the standards in most sewage treatment plants, but also exceed the standard even by 10 times. The effluent of a general sewage treatment plant will have a sterilization and disinfection process, and the main reason for the over-standard of fecal coliform bacteria is the low efficiency of the sterilization and disinfection process section.

[0003] The Chinese patent with the application number 202010721802.7 discloses a method for judging water quality disinfection according to the ORP value in water, and its device includes a test tube main body, a servo motor, a protective cover body, a piston valve core and a screw shaft, which is arranged on the water outlet, interval sampling and detection, and the sample is sent into the ORP online instrument for measurement by the operator; by comparing with the standard value, the dosage is adjusted. Although this technical method can achieve the purpose of killing fecal coliform bacteria, it has the time after nature in sampling, detection comparison and control of reagent addition, and cannot achieve 24-hour manual detection comparison. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the purpose of the utility model is to provide an online real-time detection device in the sewage treatment process.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An online real-time detection device in the sewage treatment process, comprising an ORP detection system and an AI intelligent dosing system, the ORP detection system comprising an ORP monitoring electrode placed at the effluent end of a discharge pool or a disinfection pool and a standard electrode arranged outside the pool; the ORP monitoring electrode and the standard electrode are respectively connected to an instrument box through wires, the instrument box is connected to a PLC cabinet through a signal line, the PLC cabinet is electrically connected to the AI intelligent dosing system, and the PLC cabinet compares the ORP monitoring value with the standard value to control the frequency or amount of sodium hypochlorite added by the AI intelligent dosing system.

[0007] As a preferred, the ORP monitoring electrode is sleeved with an instrument guide rod, and the ORP monitoring electrode and the instrument guide rod are connected through a screw thread.

[0008] As preferred, the instrument guide rod is fixed by an instrument support, the instrument support comprises an L-shaped support fixed to the ground and a fixing buckle, the instrument guide rod slides relative to the fixing buckle, and the fixing buckle is fixed on the L-shaped support by screw nut cooperation to keep the ORP monitoring electrode below the water level.

[0009] As preferred, a protective sleeve is further included, the protective sleeve is a hollow tube, the protective sleeve is fixed to the pool wall of the discharge pool or the disinfection pool by a protective sleeve support, and the instrument guide rod is suspended in the protective sleeve by the instrument support.

[0010] As preferred, the protective sleeve is drilled with a hole below the water surface, and the hole has a diameter of 1 cm.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] The detection device cooperates with the AI intelligent dosing system through the ORP detection system, compares the ORP monitoring value and the standard value in real time, controls the frequency or quantity of the AI intelligent dosing system adding sodium hypochlorite, realizes continuous monitoring of the ORP value fluctuating in a small range, judges the condition of coliform bacteria by measuring the ORP value reflecting the residual chlorine value, the monitoring of the ORP is not affected by the color, water quality and water quantity fluctuation of the water body, and the AI intelligent dosing system can be continuously measured, controlled, the reagent consumption cost can be saved, and environmental accidents can be avoided to the greatest extent. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of an online real-time detection device in the sewage treatment process.

[0014] Figure 2 It is an OPR and coliform bacteria relationship diagram.

[0015] Figure 3 It is an ORP set value and water temperature relationship diagram.

[0016] In the drawings: 1-ORP monitoring electrode, 2-standard electrode, 3-instrument box, 4-PLC cabinet, 5-instrument guide rod, 6-L-shaped support, 7-fixing buckle, 8-protective sleeve, 9-protective sleeve support, 10-discharge pool or disinfection pool. DETAILED DESCRIPTION

[0017] The utility model discloses a preferable embodiment provides a kind of online real-time detection device in sewage treatment process, including ORP detection system and AI intelligent dosing system, ORP detection system includes the ORP monitoring electrode 1 of being placed in discharge pool or disinfection pool 10 outlet and standard electrode 2 being located in pool outside;ORP monitoring electrode 1 and standard electrode 2 are respectively connected through electric wire connection instrument box 3, instrument box 3 is connected by signal line access PLC cabinet 4, PLC cabinet 4 is electrically connected with AI intelligent dosing system, and ORP monitoring value is compared with standard value by PLC cabinet 4, to control the frequency or quantity of AI intelligent dosing system adding sodium hypochlorite.

[0018] The sewage treated by sewage treatment plant flows to discharge pool 10 after disinfection, ORP monitoring electrode 1 is installed in discharge pool 10 (or disinfection pool), probe is immersed in water, ORP monitoring electrode 1 is connected with instrument box 3, instrument box 3 is connected with PLC cabinet 4, PLC cabinet 4 is electrically connected with AI intelligent dosing system arranged in central control room of sewage plant, and ORP monitoring value is compared with standard value by PLC cabinet 4, to control the frequency or quantity of AI intelligent dosing system adding sodium hypochlorite, when ORP monitoring value is greater than standard value, sodium hypochlorite dosing pump frequency is reduced, otherwise frequency is increased;Realize that ORP value is monitored continuously in smaller range fluctuation.

[0019] By measuring ORP value to reflect residual chlorine value to judge fecal coliform bacteria situation.Measuring ORP will not be affected by water color, water quality and water quantity fluctuation, and can be continuously measured, and AI intelligent dosing system control can save reagent consumption cost, and maximum degree of environmental protection accident occurs.

[0020] Embodiment 2: The utility model discloses a preferable embodiment provides a kind of online real-time detection device in sewage treatment process, and its difference with the above embodiment only in that: the ORP monitoring electrode 1 is equipped with instrument guide rod 5, and ORP monitoring electrode 1 is connected with instrument guide rod 5 by screw thread.

[0021] The instrument guide rod 5 is fixed by instrument support, and the instrument support includes L-shaped support 6 fixed to ground and fixing buckle 7, and the instrument guide rod 5 slides relative to the fixing buckle 7, and the fixing buckle 7 is fixed on the L-shaped support 6 by screw nut cooperation, so as to keep ORP monitoring electrode 1 below water level.

[0022] The protective sleeve 8 is drilled with hole below water surface, and the hole diameter is 1cm.

[0023] Embodiment 3: The utility model discloses a kind of online real-time detection devices in sewage treatment process, and its difference with the above embodiment is only in that: it further includes protective sleeve 8, the protective sleeve 8 is hollow pipe, protective sleeve 8 is fixed in the pool wall of discharge pool or disinfection pool 10 by protective sleeve support 9, and instrument guide rod 5 is suspended in protective sleeve 8 by instrument support.

[0024] The device is actually operated in the field, and it is found that after controlling the frequency or quantity of adding sodium hypochlorite by the AI intelligent dosing system, the ORP value in water and the E. coli index have a linear relationship. When the ORP is above 380mv, the residual chlorine amount is greater than 0.4mg / L, and the fecal coliform bacteria is stable within 1000 / L, which meets the first A discharge standard. Figure 2 As shown. After one year of data analysis of a certain municipal sewage treatment plant in Tongxiang City, Zhejiang Province, when the water temperature changes, the relationship between water temperature and ORP value is ORP=12.1T+75 (T is the outlet water temperature), as shown in Figure 3 According to the comparison between the corrected ORP standard value and the standard value according to the water temperature, the frequency or quantity of adding sodium hypochlorite by the AI intelligent dosing system is controlled, the ORP value is continuously monitored within a small range, the residual chlorine value is reflected by the measured ORP value to judge the fecal coliform bacteria killing situation, the ORP monitoring is not affected by the color, water quality and quantity fluctuations of water body, and the AI intelligent dosing system can be continuously measured. Control can save the cost of reagent consumption, and can avoid environmental accidents to the greatest extent.

Claims

1. An on-line real-time detection device in a sewage treatment process, characterized in that, The application relates to an ORP detection system and an AI intelligent dosing system, wherein the ORP detection system comprises an ORP monitoring electrode (1) arranged at the water outlet end of a discharge pool or a disinfection pool (10) and a standard electrode (2) arranged outside the pool; the ORP monitoring electrode (1) and the standard electrode (2) are respectively connected with an instrument box (3) through wires; the instrument box (3) is connected with a PLC cabinet (4) through a signal line; the PLC cabinet (4) is electrically connected with the AI intelligent dosing system; the PLC cabinet (4) compares the ORP monitoring value with a standard value to control the frequency or quantity of sodium hypochlorite added by the AI intelligent dosing system.

2. The on-line real-time detection device in sewage treatment process according to claim 1, characterized in that, The ORP monitoring electrode (1) is sleeved with an instrument guide rod (5), and the ORP monitoring electrode (1) and the instrument guide rod (5) are connected through a screw thread.

3. The on-line real-time detection device in a sewage treatment process according to claim 2, characterized in that, The instrument guide rod (5) is fixed through an instrument support, and the instrument support comprises an L-shaped support (6) fixed on the ground and a fixing buckle (7); the instrument guide rod (5) slides relative to the fixing buckle (7); the fixing buckle (7) is fixed on the L-shaped support (6) through screw nut cooperation to keep the ORP monitoring electrode (1) below the water level.

4. The on-line real-time detection device in a sewage treatment process according to claim 3, characterized in that, The application further relates to a protective sleeve (8), which is a hollow pipe.

5. The on-line real-time detection device in a sewage treatment process according to claim 4, characterized in that, The protective sleeve (8) is fixed on the pool wall of the discharge pool or the disinfection pool (10) through a protective sleeve support (9), and the instrument guide rod (5) is suspended in the protective sleeve (8) through the instrument support.

6. The on-line real-time detection device in a sewage treatment process according to claim 4, characterized in that, The protective sleeve (8) is drilled with a hole below the water surface, and the hole has a diameter of 1 cm.

Images