What heat sources can be selected for sludge drying equipment in sewage treatment plant

The normal operation of sludge drying equipment in sewage treatment plant is inseparable from the supply of heat source, which can be divided into many kinds. The common heat sources are natural gas, steam, coal, fuel oil, biomass fuel, boiler waste heat, etc. How to choose different heat sources?

Analysis of heat source for sludge drying equipment in sewage treatment plant

1. Natural gas

Natural gas is a kind of clean energy. Its main component is alkanes. In the process of use, natural gas will not produce waste gas and waste residue. It has the advantages of high calorific value, clean and good environmental protection performance. The air temperature of natural gas hot blast stove is stable, easy to control and low one-time investment. But at present, the price of natural gas will vary according to different regions, but on the whole, the cost of natural gas is higher than that of other fuels.

2. Coal burning

Using coal as fuel is a commonly used heating method in the past. As a widely used heat source material, coal has higher cost performance. Compared with natural gas, the same price of coal can produce more heat, which shows that coal as a heat source will save more money. However, it should be noted that a large number of SO2, CO2 and other toxic and harmful gases will be produced during coal combustion, which will cause serious environmental pollution and increase the treatment load of waste gas treatment equipment. At present, the environmental protection policy is more and more strict, and the use of coal is gradually restricted.

3. Steam

Using steam as heat source is a cost-effective choice. As a clean energy, steam is cheaper than natural gas in price. At present, many enterprises are using steam to heat sludge drying equipment in sewage treatment plants. Therefore, ZJN environmental protection equipment follows the market demand and introduces the sludge drying equipment of "automatic rake reciprocating" steam series, which not only has good energy-saving effect, but also has no pollution to the materials, so it is very suitable for enterprises with high requirements on the quality of finished products.

4. Boiler waste heat

The sludge drying equipment of sewage treatment plant can use the boiler tail gas of the enterprise as the heat source, effectively realizing the waste gas reuse. The "waste heat utilization" technology can greatly reduce the heating cost of sludge drying equipment in sewage treatment plant, and the effect of energy saving and consumption reduction is remarkable. For enterprises with conditions, this method can be used to heat the sludge drying equipment.

In addition, the sludge drying equipment of sewage treatment plant can also use electric energy and solar energy for heating, which can be applied to different drying environment and conditions. What kind of heat source to use is not a single problem. In addition to considering the economy, we should also consider the convenience, calorific value, reliability and so on. Users need to choose according to their own specific situation and local conditions.