Sludge drying refers to the process of using the evaporation principle of water to reduce the moisture content in the sludge.Sludge drying is a process of sludge treatment, in addition, including sludge concentration, sludge dehydration, sludge drying and sludge incineration, these are sludge reduction, stabilization, harmless treatment.
In recent years, the market scale of China's sludge treatment industry has been expanding continuously. Data show that the market of sludge treatment exceeded 50 billion yuan in 2017, an increase of more than 280% compared with nearly 13 billion yuan in 2010. Professional institutions expect that this figure will increase to about 58 billion yuan in 2018, among which the development of sludge to resource recovery is a major trend.
This is because the sludge contains nitrogen, phosphorus, potassium, trace elements and organic compounds, and the dried sludge can be used as fertilizer. In addition, some dried sludge has a calorific value approximately equivalent to lignite, which can be used as an auxiliary fuel for coal-fired power plants, waste incinerators and other processes.
How to ensure better sludge drying efficiency?The insider expresses, make the sufficient contact between dry air and wet sludge, form bigger humidity difference between two big interface, conduce to sludge drying to proceed smoothly, so when choosing sludge drying equipment, also want to consider this factor, in order to ensure better sludge processing efficiency.
Professional institutions have, according to data in the third quarter of 2018 sewage treatment projects, a total of more than 800, with a total investment of about 300 billion yuan, the size of the market to expand common development will drive associated with it industry chain, the sludge treatment in sewage treatment system is relatively complex, high cost of one department, so more attention should be paid when the choice equipment price.Similarly, sludge drying equipment in the purchase, the choice of the right, strong manufacturers is to ensure the sludge treatment effect of the prerequisite.
