With the acceleration of urbanization, the amount of sludge produced by sewage treatment plants is increasing year by year. In order to solve the problem of sludge treatment, various sludge dryers have emerged. This article will introduce the function, principle, characteristics, application and future development of sludge dryer.

1. The function of sludge dryer

The sludge dryer is an efficient and energy-saving sludge treatment equipment. Its main function is to dry the wet sludge to reduce its moisture content and volume, which facilitates subsequent processing and resource utilization. After being processed by a sludge dryer, the volume of sludge can be reduced by 50%-80%, which facilitates transportation and disposal and reduces environmental pollution.

2. Principle of sludge dryer

The working principle of the sludge dryer is to use heat energy to evaporate the water in the wet sludge. Generally, a high-temperature hot air furnace is used to generate hot air, which is then entered into the dryer through a pipe and fully contacted with the wet sludge to evaporate the water. The main factors that affect the drying effect include temperature, humidity, residence time, etc.

3. Characteristics and application advantages of sludge dryer

Features:

(1) High efficiency and energy saving: A high-temperature hot blast stove is used to generate hot air, which has high thermal efficiency and high energy utilization.

(2) Strong processing capacity: it can handle a large amount of wet sludge and achieve sludge reduction.

(3) High degree of automation: It can automatically control parameters such as temperature and humidity, and is easy to operate.

(4) Wide scope of application: suitable for various types of sludge drying treatment.

Application advantages:

(1) Reduce sludge volume and reduce transportation and disposal costs.

(2) Realize resource utilization of sludge and improve economic benefits.

(3) Avoid secondary pollution of the environment caused by sludge.

4. Application fields of sludge dryer

(1) Activated sludge produced by municipal sewage treatment plants.

(2) Chemical sludge produced during industrial wastewater treatment.

(3) Organic sludge produced by food, pharmaceutical and other enterprises.