1. System overview
Many industrial cities in our country discharge large amounts of wastewater, which has caused serious pollution of urban surface water. The environmental monitoring center stations in each city are responsible for monitoring the urban surface environmental water quality and pollution source wastewater discharge. Many cities have successively formed a wastewater monitoring network with city stations as the network head, and district stations and industry stations.
In order to improve water quality monitoring capabilities, an online wastewater monitoring system has been established. The system has established an urban wastewater monitoring network system composed of wastewater discharge monitoring sub-stations, monitoring central stations and management centers (urban environmental protection bureaus). The system can realize automatic sampling of enterprise wastewater and urban sewage, online monitoring of flow, and online monitoring of major pollution factors; real-time grasp of enterprise and urban sewage discharge and total pollutant discharge, and automatic transmission of monitoring data; by the monitoring center The computer control center of the station conducts data collection, sorting and comprehensive analysis; the monitoring information is transmitted to the urban environmental protection bureau, which supervises and manages the enterprise.
2. System description
The wastewater monitoring system is composed of monitoring substations, monitoring center stations, and management centers. The data of each monitoring point is summarized to the monitoring center station through the network, and the monitoring data is effectively fed back to the management center through the monitoring center station. All pollution sources in the city are monitored in real time.
Monitoring sub-station: Build a monitoring sub-station at each sewage outlet. The monitoring sub-station is equipped with an experimental platform. The station is equipped with an online flow meter, an automatic water quality sampler, an online pollutant monitor and a computer control system. The computer system of the monitoring sub-station can complete the functions of collection, data processing, storage, display, recording, statistics, printing, etc. of the output signal of the detection instrument; it can meet the requirements for monitoring data of each sewage outlet, and perform real-time through the wireless communication system and the computer control center data transmission.
Monitoring central station: establish a central laboratory, a wireless receiving system and a computer control center at the urban environmental monitoring central station. The computer control center is responsible for receiving the information transmitted by the monitoring sub-stations and the monitoring information of other pollution sources; is responsible for the classification, screening and comprehensive analysis of the monitoring information; completing the statistics, calculation and processing of the data, and can automatically generate various reports; with storage and display , Recording, printing, statistics and other functions, and realize networking with the Municipal Environmental Protection Bureau Information Center. Set up a large-screen projection system to display the distribution of the city’s key pollution sources and monitoring results, and use a computer multimedia voice system to demonstrate environmental quality.
Management Center: The management center is composed of relevant departments of the Urban Environmental Protection Bureau and is the decision-making center of the system. It mainly analyzes and investigates the monitoring information obtained from the monitoring center station, makes management decisions in time, and increases management efforts.
3. system requirements
Adapt to the harsh environment on site, fully industrial grade products
Collect and analyze the harmful chemical components contained in industrial wastewater, and obtain various accurate values
Analyze the collected data, implement alarms and monitor the wastewater treatment device to make the wastewater meet the discharge requirements
Transmit the data collected on site to the central control room via Ethernet
4. system principle and block diagram
The basic parameters of monitoring include COD, NH3-N, PH, petroleum, cyanide, phenol, Cr+ flow and other concentration and total discharge. The monitoring system consists of water pretreatment device, monitoring instrument, data acquisition and processing control system, system platform software And other parts.
5. Product list:
Monitoring site, monitoring center: industrial tablet
6. Anrecson industrial computer features:
1. The modular board-to-board design is adopted internally to reduce the stability and reliability of the product caused by industrial site vibration
2. Configure 15-inch TFT high-brightness LCD display
3. Multiple serial ports, supporting RS232, 485, multi-channel detection of water quality
4. The screen uses 5-wire resistive touch to reduce product stability caused by dust
Fifth, the panel adopts a lock design to meet the on-site operation authority setting
7. Conclusion:
It is an inevitable development trend for the urban industrial wastewater monitoring system to adopt a large number of mature industrial control equipment and advanced control software. Kola's special computer products undoubtedly provide mature and stable industrial control equipment products in the urban industrial wastewater monitoring system.
