Reading guidance：Because sludge properties and different, treatment and disposal methods is endless also and same. According to the source, and the sludge can be divided into municipal sewage sludge, industrial sludge,

Because sludge properties and different, treatment and disposal methods is endless also and same. According to the source, and the sludge can be divided into municipal sewage sludge, industrial sludge, river and lake sediment. Wet sludge yield complex nature, contain pathogens and heavy metals and other harmful substances, easy to spoilage, if not the disposal, seriously affected and the pollution of the environment. 


Municipal sludge:
   It is mainly urban sewage treatment plant in the sewage generated in the process of semi-solid or solid material, excluding grid slag, scum and grit. General sewage treatment plant sludge dry based mass of about one thousandth of the amount of water treatment, such as depth of processing, sludge drying medium can also increase 0.5-1 times. Industrial sludge is generated by industrial production and waste water treatment solids and water, oil, chemical pollution precipitation and organic matter mixture.
The river and lake sediment
    Microorganisms in natural water, organic matter and inorganic deposition of sediment. Understanding of different sludge to the sludge is pollutants: contains a lot of water, COD of organic pollutants, foul smelling chemicals, pathogens, part of the heavy metal and. Sludge is nutrition matter: contains organic matter, trace elements, nitrogen, phosphorus, potassium and other useful substances. Sludge is energy production, some dry basis calorific value can be used as a heat source.
 
 
 

：Low-temperature heat drying disposal process for sludge ：Solutions for sludge disposal