Advantages and disadvantages of sludge drying equipment at low temperature

The sludge production in China is increasing every year, and the problem of sludge disposal is becoming more and more serious. At present, the state attaches great importance to sludge treatment. In order to achieve the goal of "harmless, resource and reduction" of sludge, it is necessary to rely on professional technology and exquisite technology. However, traditional sludge dewatering equipment can not meet the requirements of all aspects. The low temperature sludge drying equipment has gradually entered people's sight.

Advantages of sludge drying equipment at low temperature:

1. Low operating cost. Generally speaking, fuel cost accounts for a large part of the operating cost of equipment. If the fuel cost can be reduced, it can save a lot of costs. At this point, the sludge low temperature drying equipment has more advantages. The low temperature sludge drying equipment can use waste steam and waste boiler flue gas as heat source to provide stable heat to the dryer cylinder. Compared with the use of natural gas, fuel oil, biomass particles, etc., the heating cost is greatly reduced.

2. The waste gas treatment is simple. The traditional drying method not only has high energy consumption, high drying temperature, but also has many problems such as dust, bad smell of discharge material, complex waste gas treatment, etc. the waste gas treatment of low temperature drying system is simple and waste gas equipment investment is low.

3. It can be unattended. The whole system can realize automatic control, can be unattended, reduce labor cost.

4. Good insulation performance. The outer tube of sludge drying equipment has the function of heat preservation and heat insulation to the inner tube, and the heat loss is smaller.

5. The equipment parameters are flexibly controlled. According to the drying requirements, sludge low temperature drying equipment can be equipped with different temperature, wind speed, air volume and other parameters, and the equipment is more flexible.

6. The equipment is stable in operation, convenient in operation, less in failure, low in maintenance cost and low in power consumption.

7. The low temperature sludge drying equipment can dry the high humidity and high viscosity solid waste hazardous waste sludge, and effectively solve the problems of sticking wall and agglomerating of high humidity sludge.

There are also some shortcomings in the low-temperature sludge drying equipment. The whole treatment equipment for low-temperature sludge drying may be put into a relatively large amount in the early stage, and the economic benefits in the later stage are still available. At present, it is also the mainstream sludge drying treatment method.