With the rapid development of industrialisation, the number of chemical plants is increasing, and the problem of sewage treatment has become a focus of attention. Filter press as one of the important equipment for sewage treatment, its selection has an important impact on the effect of sewage treatment. This article will introduce and compare the types of filter presses commonly used in chemical plant wastewater treatment, in order to provide reference for relevant people.
I. Types of filter presses
Filter press is a kind of equipment that uses pressure to dewater sludge, and it has many types, which can be divided into different types according to different classification standards. In the chemical plant wastewater treatment, the commonly used filter presses are plate and frame filter press, chamber filter press, belt filter press, centrifugal filter press, automatic filter press and other types and so on.
1, Plate and frame filter press
Plate and frame filter press is a common type of filter press, which consists of a filter frame and a filter plate, through the upper and lower pressure to achieve filtration. Plate and frame filter press has the advantages of simple structure, convenient operation, good filtration effect, etc. It is widely used in chemical, pharmaceutical, food and other industries.
2、Chamber type filter press
Chamber filter press is a relatively new type of filter press, its structure is similar to the plate and frame filter press, but it adopts the chamber design, which has higher filtration efficiency and dewatering effect. The advantage of the chamber filter press is that it has a larger filtration area, which can be adapted to the needs of large flow of wastewater treatment, and at the same time it has a higher degree of automation, which can reduce manual operation and labour intensity. However, the disadvantage of the chamber filter press is that its price is higher, and for some special types of sludge treatment effect is not good.
3、Belt filter press
Belt filter press is a kind of filter press that adopts belt filter media for filtration. It has the advantages of large handling capacity, simple operation, easy maintenance, etc. It is suitable for solid-liquid separation and sludge dewatering.
4、Centrifugal filter press
Centrifugal filter press is a kind of filter press using centrifugal force for solid-liquid separation. It is suitable for dealing with high concentration of suspension and viscous liquid, and has the advantages of strong processing capacity, high efficiency and low processing cost.
5、Automatic filter press
Automatic filter press is a kind of filter press operated by automatic control system. It can achieve fully automated operation, improve production efficiency, reduce labour costs, and is widely used in chemical, pharmaceutical, food and other industries.
6、Other types
In addition to the above four types of filter presses, there are many other types of filter presses, such as membrane filter presses, vacuum belt filter presses, barrel filter presses and so on. Each type of filter press has its unique characteristics and scope of application, and needs to be selected according to the actual needs.
In short, the filter press is an important solid-liquid separation equipment, different types of filter presses have their own unique advantages and scope of application. When choosing a filter press, you need to choose according to the actual needs in order to achieve the best filtration effect and production efficiency.
II. Selection of recommendations
When choosing a filter press, comprehensive consideration needs to be made according to the actual situation. The following are some selection suggestions:
1. Select the appropriate type of filter press according to the nature of sludge and dewatering requirements. For example, for some sludge with large viscosity, plate and frame filter press or chamber filter press can be selected; for some sludge with small particles, belt filter press can be selected.
2. Consider the treatment capacity and filtration effect of the filter press. According to the sludge flow and processing requirements, choose the appropriate model and specification of filter press to ensure that it can meet the production needs.
3. consider the reliability and stability of the equipment. Choose filter press brands and models with mature technology and reliable quality to ensure long-term stable operation and reduce maintenance costs.
4. Consider the price and running cost of the equipment. When choosing a filter press, you need to consider the price of the equipment, operating costs and maintenance costs and other factors, in order to achieve an economically reasonable return on investment.
5. Consider the expandability and upgrade space of the equipment. With the continuous development of technology and environmental protection requirements, the equipment may need to be upgraded or expanded in the future. Therefore, in the selection of filter presses need to reserve a certain amount of upgrade space and expandability.
In short, in the chemical plant wastewater treatment, it is necessary to consider various factors according to the actual situation to choose the appropriate type of filter press. At the same time, it is also necessary to strengthen the maintenance and management of the equipment to ensure its normal operation and use effect.
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