The difference between low-temperature sludge drying machine, plate and frame filter press and snail stacking dehydrator

1. Requirements for the initial moisture content of sludge before feeding. The low-temperature sludge dryer is the back-end equipment of the plate and frame filter press and the snail stacking dehydrator. The sludge must first pass through the plate and frame filter press and the snail stacking dehydrator. After dehydration, the feed material is required to be solid (non-drip) sludge. The moisture content of the sludge is generally 85%-80% before it can be fed into the low-temperature sludge drying machine for continued drying. The feed material of the plate and frame filter press and snail stacking dehydrator equipment is a solid-liquid mixture, and the sludge moisture content is generally above 80%-95%.

 2. The ultimate moisture content of the sludge after dehydration. Plate and frame filter presses and stacked screw dehydrators use mechanical methods to filter the sludge and squeeze out the moisture in the sludge. The moisture content after extrusion is generally 60%. -85%. The low-temperature sludge dryer uses low-temperature heat pump condensation dehumidification technology. The unit evaporates the sludge moisture through circulating hot air, and the sludge moisture content can be reduced to less than 30%.

 3. From technical and economic considerations, from technical considerations, the sludge produced in all sewage treatment processes and industrial production processes, the sludge after dehydration by equipment such as plate and frame filter presses and snail stacking dehydrators, sludge Low-temperature drying machines can be used for drying;

 From an economic perspective, it has a better return on investment for industrial, printing and dyeing, municipal, chemical, electroplating, food, pharmaceutical, and other sludges. It can be used as RDF raw material to make new fuels, or it can be made into organic fertilizer according to the scientific proportion of the ingredients. It can also be used as a building material. There are relatively many ways to use it in the future.