Compare and analyze the advantages and disadvantages of the existing coagulation dosing control technology, the details are as follows:
Advantages of the coagulation dosing control technology:
Coagulation dosing control technology is able to efficiently remove the suspended solids in the water, organic matter, heavy metals and other pollutants to improve the water quality. Coagulation dosing control technology can be based on different water quality and treatment requirements, flexible adjustment of the dosage and coagulant type to meet different treatment needs. Coagulation dosing control technology is suitable for a variety of water treatment processes, such as sewage treatment, drinking water treatment, industrial wastewater treatment, etc., has a wide range of application prospects.
Disadvantages of coagulation dosing control technology:
Coagulation dosing control technology requires the use of a large number of coagulants and chemicals, so the treatment cost is high, not suitable for large-scale application. Coagulation dosing control technology using a large number of chemicals may produce secondary pollution of the environment, such as pharmaceutical residues on the soil and groundwater pollution. Coagulation dosing control technology is less adaptable to changes in water quality, and is easily affected by fluctuations in water quality, requiring constant adjustment of the dosage and coagulant type.
Improve the efficiency of coagulation dosing control technology:
To realize precise control and automatic adjustment of dosage by improving the control system, and to improve the treatment efficiency. Research and development of new efficient and low-cost coagulants to reduce treatment costs. Improve the coagulation effect by optimizing the coagulation process parameters such as pH value, mixing intensity, mixing time and so on. Coagulation dosage control technology combined with other treatment technologies such as activated carbon adsorption, membrane filtration, etc. to improve the treatment effect.
Automatic control of the model:
Automatic control based on the model is to establish a mathematical model to describe the water treatment process, and according to the model prediction results automatically adjust the amount of coagulant dosage. The advantage of this method is that it can realize the optimized control of dosage and improve the treatment effect and efficiency.
The model prediction can reduce the dependence on online instrumentation, reduce equipment costs and operating costs. Model-based automatic control also has some disadvantages, the establishment of mathematical models need to have an in-depth understanding of the water treatment process, so the operator's professional requirements are higher.