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Black and Smelly Water Online Monitoring Solution

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Urban black and odorous water bodies are outstanding environmental problems related to people's livelihood and are one of the important components of the comprehensive management of the national water environment. In recent years, some river basins have made some progress in the treatment of black and odorous water bodies, but there are still some river basins that return to black and odorous problems after treatment, mainly due to the difficulty of eradicating various point sources and non-point source pollution in the river, and it is difficult for relevant departments to understand and control the changes in the water quality of the river.

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Product Description

Preamble/Project Background

Policy-Driven

Publishing agency	Standard policy name	Deploy content
Ministry of Housing and Urban-Rural Development Ministry of Ecology and Environment--- 2018.09	Notice on Printing and Distributing the Implementation Plan for the Treatment of Urban Black and Odorous Water Bodies	By the end of 2018, the proportion of black and odorous water bodies eliminated in built-up areas of municipalities, provincial capitals, and cities with separate plans was higher than 90%, basically achieving long-term cleaning. By the end of 2019, the proportion of black and odorous water bodies eliminated in built-up areas of other prefecture-level cities increased significantly, reaching more than 90% by the end of 2020. Encourage urban built-up areas in the Beijing-Tianjin-Hebei, Yangtze River Delta and Pearl River Delta regions to completely eliminate black and odorous water bodies as soon as possible.
Ministry of Housing and Urban-Rural Development Ministry of Ecology and Environment of the People's Republic of China--- March 30, 2022	In-depth implementation plan for the treatment of urban black and odorous water bodies	Adhere to systematic governance, precise policy implementation, and pluralistic co-governance, implement the urban black and odorous water body treatment mechanism coordinated by the central government, the province is responsible for the overall responsibility, local implementation, and multi-party participation, and comprehensively rectify urban black and odorous water bodies. Cities at the county level and above that have completed the treatment and realized that the water body is neither black nor odorous should consolidate the effectiveness of urban black and odorous water body treatment and establish a long-term mechanism to prevent the return of black and odorous water bodies. By the end of June 2022, the county-level city government will complete the investigation of black and odorous water bodies in built-up areas and formulate urban black and odorous water treatment plans. By 2025, the proportion of black and odorous water bodies eliminated in built-up areas of county-level cities will reach 90%, and regions such as Beijing-Tianjin-Hebei, Yangtze River Delta, and Pearl River Delta will strive to complete it one year earlier.

In April 2015, the Ministry of Ecology and Environment issued the "Water Pollution Prevention and Control Action Plan" ("Water Ten Articles"), which requires that by 2020, the number of black and odorous water bodies in cities at the prefecture level and above must be controlled within 10%; by 2030, the overall black and odorous water bodies in urban built-up areas will be eliminated, and municipalities, provincial capitals, and cities with separate plans will be completed by the end of 2017 ahead of schedule. According to this requirement, the treatment of black and odorous water bodies is far from achieving the expected results. On the one hand, it is mainly difficult to manage onshore; on the other hand, the treatment of black and odorous water bodies is a systematic and complex process, which is difficult and difficult to maintain long-term stability of water quality after the completion of many projects.

Program Overview

In response to the above problems, our company uses advanced water quality sensors with black and odorous water quality monitoring and early warning system to solve, with micro stations, shore stations, buoys as carriers, equipped with multi-parameter water quality online analyzers, the solution can be powered by mains power or solar energy, integrating automatic control, data analysis, wireless communication for online monitoring and trend warning of water quality.

Real-time monitoring
Dynamic early warning
Intelligent supervision

Core Application Products

The monitoring environment of black and odorous water bodies is harsh, the water quality is poor, and there are higher requirements for the anti-interference ability of the monitoring equipment, the stability of measurement and the convenience of maintenance.

Microstation
The whole machine has IP55 protection level, covers an area of < 1 square meter, no need for land acquisition, conventional water quality parameter monitoring factors can be arbitrarily matched, such as COD, ammonia nitrogen, ORP, transparency, dissolved oxygen, etc., which can expand pH, conductivity, total phosphorus, total nitrogen, turbidity, chlorophyll, blue-green algae and other indicators to meet various on-site monitoring needs
Shore Station
The monitoring system is equipped with a digital probe with self-cleaning function to measure water quality parameters, which can measure up to 10 parameters at the same time, providing reliable data support for the treatment of black and odorous water bodies
Buoy
The buoy system is highly integrated and small, avoiding high infrastructure costs, and with a high degree of protection (IP68) digital electrodes, it can measure up to 7 parameters, and the system is powered by solar cells, which can achieve 30 days of continuous measurement even under continuous rainy conditions

Technical parameters of the micro station

cabinet	Protection level: The overall protection level of the cabinet reaches IP55 Environmental monitoring function: real-time monitoring of temperature and humidity, smoke and water leakage of the station building Temperature regulation: Rock wool is used for heat insulation, and the temperature in the cabinet is adjusted with integrated air conditioning Input power: AC220V±10%, 50Hz Full load power: ≤2600W (without pump). Communication mode: Supports wired and wireless transmission, which can adapt to the needs of multiple scenarios at outdoor sites Installation method: Floor-mounted installation, fixed on the cement base with expansion screws by L-shaped angle iron
Other auxiliary units	Water collection and distribution unit: multi-stage pretreatment to meet the pretreatment requirements of different analysis modules for water samples Control unit: It is composed of industrial computer, PLC programmable controller, electrical complete set, wireless or wired transmission module
Water quality sensor (optional on demand).	pH: range: 0-14pH, accuracy: ±0.1PH Conductivity: Range: 10-5000us/cm, Accuracy: ±3% or ± 3us/cm, whichever is greater Dissolved oxygen: range: 0-20mg/L, 0-200% saturation, accuracy: measured value±3% or ±0.3mg/L, whichever is greater Turbidity: Range: 0-4000NTU, Accuracy: less than ± 2% of the measured value, or ± 0.1NTU, whichever is greater Temperature: Range: 0-45°C, Accuracy: ±0.5°C Suspended solids: Range: 100-50000mg/L, less than 10% of the measured value ± (depending on the homogeneity of sludge) or 10mg/L, whichever is greater
Ammonia nitrogen	Range: 0-500mg/L (customizable). 24h low concentration drift: ≤0.02 mg/L 24h high concentration drift: ≤1.0% Repeatability ≤ 2.0%
CODmn	Range: 0-50mg/L (can be customized). Zero drift: ±5% Range drift: ±5% Repeatability: ≤2%
CODcr	Range: 0-50000mg/L (customizable). 24h low concentration drift: ±5mg/L 24h high concentration drift: ≤2% Repeatability: ≤2%
Total nitrogen	Range: 0-250mg/L (customizable). Zero drift: ≤±2% Range drift: ≤±10% Repeatability: ≤2%
Total phosphorus	Range: 0-100mg/L (customizable). Range drift: ≤±2% Zero drift: ≤±2% Repeatability: ≤2%

Technical parameters of the shore station

Cabinet material	FRP
Installation method :	Floor installation
Human-computer interaction	7-inch touch screen
Ambient temperature	5-45℃
Ambient humidity	10-90%
Power supply	220VAC±10%，50Hz
Power	Approx. 450W (including self-priming pump 420W).
Communication interfaces and protocols	GPRS<MQTT>、RS485<MODBUS-RTU>(Optional)
Working mode	Hourly mode, periodic mode
Dimensions	7505951550mm (LWH).
Weight	≤160kg

River buoy water quality monitoring parameters

Buoy size	Buoy size: 0.6m0.6m0.7m (widthdepthheight); Buoy net weight: 35KG
Loading capacity	6 probes can be installed with a diameter of ≤75mm; probe length ≤ 400mm
Buoy power supply system	Battery capacity: 42AH; Configure 72w solar power; Power supply mode: DC12V (optional).
Low power design	The instrument, data collection and indicator light are all selected with low power consumption, and the power supply pressure is small
Power supply capacity	Customized selection, the endurance on rainy days can reach more than 30 days
Position indication	It comes with a warning light, which can also be clearly located at night to avoid being hit
Anti-overturning design	According to the tumbler principle, the center of gravity is shifted downwards to prevent overturning
Easy to deploy	Good environmental adaptability, very suitable for urban inland rivers, small lakes, wetland parks, etc
Easy maintenance	The sensor adopts a quick plug for easy maintenance
Anti-interference	The probes are installed separately to avoid interference between the monitors
Water quality is multi-parameter	pH range: 0-14pH, temperature: 0-60°C Conductivity range: 10-5000us/cm, temperature: 0-60°C Dissolved oxygen range: 0-20mg/L, 0-200% saturation, temperature: 0-45°C Turbidity range: 0.01-4000NTU Chlorophyll range: 0-500ug/L Blue-green algae range: 0-300,000cells/mL UVCOD range: 0-2000mg/L COD (2mm optical range). Ammonia nitrogen range: 0.1-3000mg/L

Digital Platform for Black and Odorous Water Bodies

The digital platform for black and odorous water bodies uses the Internet of Things and big data analysis to build a digital management platform that can reflect the current situation of black and odorous water treatment in real time. The platform provides rich data analysis and visualization functions, realizes the management support of the whole process of water quality treatment, and deeply integrates data analysis and business scenario applications, providing strong support for decision-making.

Solution Advantages

Flexibility
Integrated and powerful, it can adopt more economical and efficient monitoring methods (micro stations, shore stations, buoys) according to the characteristics of different sites;
Security
The fully enclosed system is adopted, which is not interfered with by the outside world, and the operation is safe and reliable
Durability
High protection, aging resistance, and long-term use in outdoor environments;

Convenience
The equipment has self-cleaning function and low operation and maintenance;
Professionalism
Based on the water quality model of black and odorous water bodies and the evaluation algorithm of black and odorous water bodies, the trend prediction is realized, and the data is accurate and reliable

Project Cases

“Through the whole process management of "seepage, stagnation, storage, purification, use, and discharge", and the use of new technologies such as information remote data collection and intelligent control, the online monitoring of the PPP project in the Zaoyang Shahe River Basin has been used to strengthen water replenishment, strengthen water supervision, improve ecological restoration, and achieve the construction goals of "no water accumulation in light rain, no waterlogging in heavy rain, and no black and odorous water body", effectively improving the quality of ecological civilization construction in Zaoyang City.

“Ningbo Rihu Park Smart Park Construction and Improvement Project "In order to maintain the good ecological environment of Rihu Park and prevent the deterioration of water quality, the reconstruction project aims to "intelligentize", build an automatic water quality monitoring system for shore stations, monitor the water environment for a long time, and prevent the water body from becoming black and odorous.

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Black and Smelly Water Online Monitoring Solution

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