In the wave of urban ecological civilization construction, wastewater treatment plant as an important part of the urban ecological cycle, shouldering the great responsibility of guarding green water and green mountains. However, with the expansion of the city scale and the growth of sewage treatment demand, how to ensure that the water quality discharge standards, while effectively preventing production safety accidents and improve the operational efficiency of the enterprise, the industry has become an urgent problem to be solved.

Project Background

Hefei sewage treatment plant, located in Hefei Economic Demonstration Zone, as a semi-underground sewage treatment giant with a daily treatment scale of 100,000 tons, it is in this context, hand in hand with Woxu Wireless, writing a successful chapter of empowering safe production and promoting intelligent operation with scientific and technological innovation.

As a key project of water pollution control in Hefei city, the sewage treatment plant has a total investment of about 560 million yuan, covers an area of about 124.14 acres, with a construction area of 83,000 square meters, and its large scale and complex process undoubtedly puts forward more stringent requirements for personnel safety management. In the face of many types of work and key areas of supervision difficulties and other personnel management challenges, as well as underground space operating environment high-risk, coupled with emergency response lag and other deep-rooted problems, the sewage treatment plant urgently needs a set of advanced, intelligent and efficient solutions to cope with the increasingly prominent safety and management challenges.

Anatomy of Pain Points

● Complexity of personnel management: the dispersed nature of multiple types of work, multiple positions, coupled with the blind spots in the supervision of key positions, making it difficult to effectively identify and prevent irregular operating behavior (such as mistakenly entering the dangerous area, overtime detention), and the safety of hidden dangers abound.

● High-risk operating environment: The toxic gases such as hydrogen sulfide, hydrogen cyanide, ammonia, etc. generated in the sewage treatment process, as well as the accumulation of toxic and hazardous substances and insufficient oxygen due to poor ventilation in the underground space, constitute a major risk of poisoning, asphyxiation and explosion.

● Lack of inspection and supervision: Traditional inspections cannot be monitored and traced in real time, and the effectiveness of hidden danger investigation is poor, making it difficult to ensure operational safety.

● Emergency response lagging behind: the plant is huge, the internal structure is complex, the location of the personnel is unknown, resulting in low efficiency of emergency rescue.

Solution

Aiming at the above challenges, Woxu Wireless launched a complete set of personnel positioning solutions according to the characteristics of the site environment of the sewage treatment plant and the consideration of safety, intelligence, low cost and other comprehensive factors. Deploying UWB positioning anchor in primary sedimentation tank, biochemical tank, secondary sedimentation tank, distribution room and other production areas, operators, outsourcing personnel, inspectors wear positioning tags, through real-time accurate positioning, to achieve intelligent personnel safety management in dangerous and complex working environment, and carry out intelligent system transformation of wastewater plant.

Optimize production and operation, help sewage treatment plants to build a safety control system of prediction beforehand, detection during the incident, and traceability after the incident in one, effectively solve the difficulties in the management of sewage enterprise safety production, and promote the construction of sewage plant intelligence.

Application Functions

(1) Real-time accurate positioning of personnel: Whether on the ground or underground, the system displays the location of all personnel in real time, quickly locks the dangerous area, and improves the speed of emergency rescue. Combined with the position, shift, and area settings, it realizes intelligent warning for off-duty, crosstalk, and departure to ensure that the personnel work in a compliant manner.

(2) Intelligent protection in dangerous areas: Electronic fences are set up in key areas to provide real-time monitoring and alerts for unauthorized entry, illegal departure, overcrowding, gathering, and detention, effectively preventing accidental entry into forbidden areas and reducing the probability of risk occurrence.

(3) Rapid statistics of personnel distribution: real-time summarization of the number and details of personnel in the whole site or specific areas, so as to quickly grasp the distribution of personnel in case of accidents and gain valuable time for emergency rescue.

(4) Two-way communication and health monitoring: Integrating the functions of one-key alarm and emergency evacuation command to ensure quick response in case of emergency. At the same time, it continuously monitors the heart rate, blood oxygen and other indicators of the operating personnel, and warns them immediately when they are abnormal, so as to protect the life safety of the operating personnel.

(5) Trajectory traceability and video linkage: the whole process of recording the trajectory of key personnel and operations, combined with video monitoring, to achieve event traceability and responsibility definition. Quickly locate the historical trajectory of personnel to provide strong evidence for accident investigation.

(6) Closed-loop management of inspection process: preset inspection tasks, automatically record the inspection process and generate reports to ensure that the quality of inspection is controllable and no hidden dangers are missed.

Site picture

Value Summary

Woxu 's UWB positioning solution is deeply integrated with the actual scenarios of this wastewater treatment plant, successfully solving the core problems of personnel safety management, inspection supervision and emergency response, and significantly improving the safety prevention and control capabilities. At the same time, it optimized the production and operation efficiency, and set up a replicable successful model for intelligent safety management in the sewage treatment industry, which strongly promoted the green, safe and efficient development of the industry.

The cooperation between this wastewater treatment plant and Woxu is not only a vivid practice of science and technology empowering the environmental protection industry, but also a powerful interpretation of the construction of urban ecological civilization. In the future, we will continue to work together with our industry partners to build a new ecology of safe, intelligent and efficient wastewater treatment driven by innovative technology.