Environmental protection equipment-self-excited wet dust collector is widely used in industrial dust control due to its advantages of efficient dust removal, water saving and energy saving. However, its wastewater treatment and recycling technology still faces challenges such as low efficiency, high cost and secondary pollution. In response to these problems, the following innovative directions are proposed from the dimensions of process optimization, resource utilization and intelligent management.
The traditional sedimentation method is easily affected by factors such as particle size and density of particulate matter, resulting in low solid-liquid separation efficiency. A pretreatment combination process of cyclone separation + flotation enhancement can be introduced. Environmental protection equipment-self-excited wet dust collector The cyclone separator accelerates particle sedimentation through centrifugal force, and the flotation device uses microbubbles to adhere to fine particles. The two can work together to remove more than 90% of suspended matter and significantly reduce the subsequent treatment costs. For example, after a steel company adopted this technology, the wastewater circulation rate increased from 65% to 82%.
For soluble pollutants in wastewater (such as heavy metal ions and organic matter), a combined process of anaerobic biofilter + ultrafiltration membrane can be developed. The anaerobic filter degrades organic matter through microorganisms, and the ultrafiltration membrane intercepts colloids and microorganisms, so that the effluent quality can meet the reuse standard. Studies have shown that the process has a COD removal rate of more than 95%, and the membrane pollution control effect is better than that of the traditional MBR system.
The suspended matter in the wastewater is rich in minerals such as iron and calcium, and mineral resource recovery technology can be developed. By adjusting the pH value to precipitate metal ions, combined with magnetic separation or flotation processes, high-purity mineral powders can be recovered. For example, a power plant uses this technology to recycle more than 200 tons of iron concentrate per year, creating economic benefits of more than one million yuan. In addition, the heat in the wastewater can be recovered through a heat exchanger and used to heat the dust collector inlet water to achieve energy cascade utilization.
Based on the Internet of Things and big data technology, an intelligent monitoring platform for wastewater treatment is developed. By online monitoring of parameters such as pH value, turbidity, and heavy metal concentration, combined with machine learning algorithms to predict water quality trends, the dosage of reagents and treatment process parameters can be dynamically adjusted. For example, after a cement plant applied this system, the reagent consumption was reduced by 30% and the treatment efficiency was increased by 25%.
Develop standardized and modular treatment units based on the characteristics of wastewater from different industries. For example, design evaporation and crystallization modules for high-salt wastewater, and develop softening pretreatment modules for high-hardness wastewater. Each module can be flexibly combined to quickly adapt to different treatment needs. In addition, modular design facilitates transportation and installation, which can significantly shorten the project cycle.
Research and development of high-performance membrane materials and adsorbents is a key direction. For example, graphene composite membranes have high permeability flux and anti-pollution properties, which can replace traditional polymer membranes; nano-iron-based adsorbents have an adsorption capacity for heavy metals that is more than 10 times higher than traditional materials. The application of these new materials will significantly improve the efficiency and stability of wastewater treatment.
Establish a full life cycle management system from design, operation to decommissioning. In the equipment selection stage, give priority to low-energy consumption and long-life environmentally friendly equipment; in the operation stage, optimize energy consumption and resource consumption through digital means; in the decommissioning stage, realize equipment material recycling and reuse. For example, a company reduced the environmental impact of the wastewater treatment system by 40% through full life cycle management.
Environmental protection equipment-self-excited wet dust collector wastewater treatment and recycling technology innovation should focus on the goal of "reduction, resource utilization, and harmlessness", combine industry needs and technology development trends, and build an efficient, economical, and sustainable wastewater treatment system through process optimization, material innovation, and intelligent management. In the future, with the improvement of environmental protection standards and the intensification of resource shortages, these innovation directions will become the core driving force for promoting the green transformation of the industry.
