Miniature automatic water quality monitoring station

Abstract

The utility model discloses a miniature automatic water quality monitoring station, and belongs to the technical field of water quality monitoring. Comprising a water sampling unit, a water distribution unit, a pretreatment unit, a monitoring analysis unit, an auxiliary unit and an integrated control unit, and the data acquisition and transmission unit is used for communicating and connecting the integrated control unit with a remote center. The water quality monitoring system has the advantages of real-time water quality monitoring, accurate monitoring data acquisition, rapid transmission, low construction and operation cost and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality monitoring, in particular to a miniature automatic water quality monitoring station. Background Art

[0002] With the development of science and technology and the improvement of urbanization level, social and economic development has been greatly promoted, but at the same time, it has also caused certain ecological and environmental pollution; the discharge of pollutants such as organic matter, nutrients, and heavy metals has caused great damage to the ecological environment of rivers, lakes, and reservoirs; it not only affects the quality of water bodies, but also produces a lot of odor, seriously affecting the life and health of surrounding residents; in order to ensure the safety of water quality in the water environment, water body protection has gradually been paid attention to by people. In the water quality monitoring of important points, the application of water quality monitoring systems has become more and more extensive, and many types of water quality monitoring stations have emerged. It is widely used in environmental monitoring such as grid-based environmental governance, black and odorous water body governance, river water quality monitoring, surface water environment monitoring and early warning, and water quality section monitoring. Traditional water quality monitoring stations require civil engineering and housing, occupying a large area; they need special personnel to be on duty and collect data; the measurement cycle is long, and they cannot respond quickly to changes in water quality, and the accuracy of real-time monitoring is low. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the utility model aims to provide a miniature automatic water quality monitoring station based on Internet of Things technology, which can monitor water quality in real time, accurately collect water quality monitoring data and transmit it quickly.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A miniature water quality automatic monitoring station includes a water sampling unit, a water distribution unit, a pretreatment unit, a monitoring and analysis unit, an auxiliary unit and an integrated control unit located in a station building; and also includes a data acquisition and transmission unit that connects the integrated control unit to a remote center for communication.

[0006] Preferably, the water collection unit collects water using a single-tube single-pump or double-tube double-pump method.

[0007] Preferably, the double tubes for collecting water in the double-tube double-pump mode are arranged side by side in a protective casing, and the outer sleeve of the double tubes is provided with heat-insulating cotton.

[0008] Preferably: the pretreatment unit includes but is not limited to a sand settling tank, a high-pressure backwashing device, and an algae removal device.

[0009] Preferably: the auxiliary unit includes a UPS uninterruptible power supply for powering the monitoring station, a lightning protection system, a power failure monitoring system, a video monitoring system, an intelligent access control system, a fire protection system, a flooding alarm system, a temperature and humidity monitoring system inside and outside the cabinet, and a temperature control system.

[0010] Preferably, the monitoring parameters of the monitoring and analysis unit are any one or any combination of the five conventional water quality parameters, permanganate index, chemical oxygen demand, ammonia nitrogen, total phosphorus and total nitrogen.

[0011] Preferably, the monitoring parameters of the monitoring and analysis unit further include one or any combination of volatile phenols, biological toxicity, heavy metals, oil in water, fluoride, chlorophyll, and algae density.

[0012] Based on real-time water quality monitoring, the utility model modularizes the design of each unit in the station building, so that the monitoring station occupies a small area and has a compact structure, which greatly reduces the construction cost and is suitable for working conditions with high field protection or mobile monitoring requirements. In addition, the data acquisition and transmission unit realizes the intelligent operation function of the Internet of Things, which can be remotely maintained and verified, so that the water quality data is collected accurately and transmitted quickly, reducing the operating cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the system architecture diagram;

[0014] Figure 2 This is an end view of the water collection pipeline of the double-tube double-pump water collection method;

[0015] Figure 3 This is the piping diagram for the water collection and distribution and pretreatment system.

[0016] In the figure: 1. Protective casing; 2. Thermal insulation cotton; 3. Water collection pipeline. DETAILED DESCRIPTION

[0017] The structure and principle of the present utility model are now fully described in conjunction with specific embodiments so that those skilled in the art can fully understand and implement them.

[0018] A micro automatic water quality monitoring station includes a water collection unit, a water distribution unit, a pretreatment unit, a monitoring and analysis unit, an auxiliary unit and an integrated control unit located in the station building; it also includes a data acquisition and transmission unit that connects the integrated control unit to a remote center communication; wherein the auxiliary unit includes a UPS uninterruptible power supply for powering the monitoring station, a lightning protection system, a power failure monitoring system, a video monitoring system, an intelligent access control system, a fire protection system, a flooding alarm system, a temperature and humidity monitoring system inside and outside the cabinet, and a temperature control system. Among them: the monitoring parameters of the monitoring and analysis unit are any one or any combination of the five conventional water quality parameters, permanganate index, chemical oxygen demand, ammonia nitrogen, total phosphorus, total nitrogen, volatile phenols, biological toxicity, heavy metals, oil in water, fluoride, chlorophyll, and algae density.

[0019] In this embodiment, the automatic monitoring station adopts a small house (station house) design, and the equipment and instruments of the above-mentioned units (analyzer, water sampling device, water distribution device, water sample pretreatment device, UPS uninterruptible power supply, sample retainer, flow level meter, host computer and other auxiliary units) are installed in the station house.

[0020] like Figure 1 Shown is the system architecture diagram of the automatic monitoring station.

[0021] In this embodiment, water collection and distribution (water collection unit, water distribution unit) and pretreatment unit adopt modular design, i.e. single-tube single pump / double-tube double pump, and different solutions are adopted for different working conditions such as urban rivers / high drop steep slopes / long-distance shallows / northern freezing / plateau low pressure, etc. The pretreatment unit includes a sedimentation tank, a high-pressure backwashing device, an algae removal device, etc. The above functions can be used in combination for different solutions.

[0022] like Figure 2 As shown, when a double-tube double-pump method is used to collect water, the double tubes are arranged side by side in the protective casing 1, and the double tubes (water collection pipeline 3) are covered with thermal insulation cotton 2. It is particularly suitable for high-cold areas.

[0023] The purpose and main functions of each unit are described below:

[0024] The main function of the water sampling and pretreatment unit is to transport water samples from distant river sampling points to the water quality monitoring station through a self-priming pump or a submersible pump, and then according to national standards and specifications, go through multiple pretreatment steps such as filtration, sedimentation, and standing, and finally send the water samples to the sampling cup at the front end of the instrument for sample preparation.

[0025] The main function of the water distribution unit is to adjust the water pressure and water volume in the above water supply process through the combination of various valves and pumps to ensure that the water samples can be smoothly transported to various analysis units and corresponding equipment, and to perform necessary cleaning operations such as algae removal and high-pressure backwashing on the water sampling pipeline after instrument sampling and detection to ensure the long-term reliable operation of the system and the representativeness of the water sample sampling. Figure 3 Shown is the piping diagram of the water collection and distribution and pretreatment system.

[0026] Monitoring and analysis unit: The online monitoring instrument is a positive water quality analyzer, which is small in size, highly flexible in integration, low in reagent consumption and waste liquid, and meets the current national environmental protection requirements for low waste liquid for online monitoring. At the same time, it has high detection accuracy and good instrument operation stability.

[0027] The integrated control unit has the functions of system control, data acquisition, storage and transmission, protective operation and automatic recovery when the system is powered off or water is cut off. The integrated control unit is mainly composed of industrial computers, PLC modules, main air switches, air switches of various instruments and equipment, contactors, DC power supplies, relays and wiring terminals. In order to ensure the continuous, reliable and safe operation of the system monitoring station and coordinate the relationship between various equipment and instruments, the integrated control unit adopts the "industrial computer-PLC" two-layer system architecture to control each unit of the monitoring station as required. The water station integrated control software based on the configuration architecture loaded on the host of the control unit industrial computer is compatible with various access methods such as GPRS, CDMA, 4G, ASDL, and optical fiber. The control system in the industrial computer can complete the real-time data collection and historical data storage of water temperature, pH, conductivity, dissolved oxygen, turbidity, CODMn, ammonia nitrogen, total phosphorus index parameters and automatic samplers, and has multiple expansion interfaces; it can collect environmental indicators such as temperature (including indoors), humidity (including indoors), etc.; it can collect the power supply, start, stop, operation, measurement, zero calibration, calibration, cleaning, reagent addition, sampling time, sampling frequency, automatic sample retention, inlet and outlet pressure, water pump, valve, communication and other working states of the instrument and equipment (including the state quantity for remote control). The PLC module controls the water collection and distribution, pretreatment and other units of the water quality automatic monitoring system, as well as the fire protection and anti-immersion functions. At the same time, the PLC module can also control auxiliary units such as the access control management unit and the temperature and humidity adjustment unit.

[0028] Data acquisition and transmission unit: This embodiment uses a digital standard interface to connect with all on-site devices with digital interfaces and protocols to achieve remote control of instruments and equipment, measurement data, remote timing and other functions. The communication protocol generally adopts the standard Modbus RTU protocol, and the extended communication protocol can be customized at will. The selected digital interface of the data acquisition instrument is a standard RS232, RS485 serial port or network port, RS232 / 485 COM port, not less than 8, network port, not less than 2, can be used for the acquisition and transmission of digital signals. After the selected data acquisition instrument is equipped with the corresponding communication equipment, it can have the following two communication modes at the same time:

[0029] (1) Wireless communication methods: GPRS, CDMA, 4G, etc.

[0030] (2) Wired communication methods: ASDL, optical fiber, etc.

[0031] After the above system completes the collection of field data, this unit is responsible for completing the transmission of data from the field monitoring station to the remote center. For the automatic water quality monitoring station, two communication lines are generally considered, one as the main channel and the other as the backup channel, and the two channels can back up each other. According to the specific situation on site, ADSL / VPN and other wired routing devices can generally be selected for the main channel, which can ensure the stability and reliability of the communication of the main channel, and the communication rate is also higher. For the backup channel, wireless transmission methods such as GPRS / CDMA can generally be selected. Once the main channel is not connected, it can automatically switch to the backup channel, and when the main channel returns to normal, it will automatically switch to the main channel. And a standard RS232 communication port is reserved to support other communication methods.

[0032] In summary, the automatic water quality monitoring station disclosed in this embodiment adopts a modular design, which not only corresponds to different on-site conditions, is fully functional, economical and applicable, but also occupies a small area, has a compact space, is highly specialized and standardized, and reduces the cost of station construction by 30%. It is convenient for transportation and on-site installation. It is suitable for working conditions with high field protection or mobile monitoring requirements. Through the cooperation of various units, the monitoring station has the function of "intelligent operation of the Internet of Things"; operation and maintenance personnel and managers can use the Internet of Things to perform remote "closed-door maintenance" and inspections of all instruments and equipment in the station, which greatly reduces operating costs and is suitable for promotion and use.

[0033] The above embodiments are only preferred embodiments of the present invention, and are not any formal limitations on the present invention. Any technician familiar with the art can use the above disclosed method to make many possible changes and modifications to the technical solution of the present invention without departing from the technical principle and solution scope of the present invention, or modify it into an equivalent embodiment with equivalent changes. Therefore, any combination, modification or replacement of the technical features disclosed in the present invention based on the technical essence of the present invention without departing from the principle or solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A miniature water quality automatic monitoring station, characterized in that: It includes a water collection unit, a water distribution unit, a pretreatment unit, a monitoring and analysis unit, an auxiliary unit and an integrated control unit located in the station house; it also includes a data acquisition and transmission unit that connects the integrated control unit with the remote center communication.

2. A micro water quality automatic monitoring station as claimed in claim 1, characterized in that: The water collection unit collects water by a single-tube single-pump or double-tube double-pump method.

3. A micro automatic water quality monitoring station as claimed in claim 2, characterized in that: The double tubes for collecting water in the double-tube double-pump mode are arranged side by side in the protective casing, and the outer sleeve of the double tubes is provided with heat-insulating cotton.

4. A micro water quality automatic monitoring station as claimed in claim 2, characterized in that: The pretreatment unit includes but is not limited to a sand settling tank, a high-pressure backwashing device, and an algae removal device.

5. A micro automatic water quality monitoring station as claimed in claim 4, characterized in that: The auxiliary units include a UPS uninterruptible power supply for the monitoring station, a lightning protection system, a power failure monitoring system, a video monitoring system, an intelligent access control system, a fire protection system, a flood alarm system, a temperature and humidity monitoring system inside and outside the cabinet, and a temperature control system.

6. A micro automatic water quality monitoring station according to any one of claims 1 to 5, characterized in that: The monitoring parameters of the monitoring and analysis unit are any one or any combination of the five conventional water quality parameters, permanganate index, chemical oxygen demand, ammonia nitrogen, total phosphorus, and total nitrogen.

7. A micro water quality automatic monitoring station as claimed in claim 6, characterized in that: The monitoring parameters of the monitoring and analysis unit also include one or any combination of volatile phenols, biological toxicity, heavy metals, oil in water, fluoride, chlorophyll, and algae density.

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