In 2009, China conducted a study on sludge treatment. The bioremediation method with biological additives was compared with the traditional composting method. Oily sludge and oil-contaminated soil are taken from oil fields. The total hydrocarbon content of dry sludge is 327.7-37 1.2 g kg- 1, and the total hydrocarbon content of oil-contaminated soil is151.0 g kg-1. Before using additives, add different proportions of straw, sawdust, sand and pure oil into silt and soil and mix them evenly. These silt and soil components are used for uncontrolled treatment and treatment by activating primitive microorganisms. In the compost, manure and sawdust were added to the sludge, and the total hydrocarbon content was101.4g kg-1. Chemical curing agent for sludge, especially for river sludge or municipal sewage sludge. With the construction of a large number of urban sewage treatment plants, the sewage treatment capacity and sludge output are increasing. Sludge contains a large number of microorganisms, pathogens, heavy metals and organic pollutants, and its water content is generally above 80%. Improper handling will cause secondary pollution. At present, the main methods of sludge treatment are agriculture, incineration and landfill, and a large amount of sludge is discarded without any treatment. Due to the high water content of sludge, poor soil mechanical properties and high pollutant content, all the current treatment methods have problems such as environmental pollution, high treatment cost and easy to cause landfill engineering geological disasters.

Whether sludge can be buried depends on the geotechnical properties of sludge or the mixture of sludge and other additives. When silt is buried, it is required that the shear strength of vane is ≥25kpa and the unconfined compressive strength is ≥50kpa. After conventional dehydration, the water content of sludge is above 80%, and the shear strength of serrated plate is

Therefore, it is necessary to improve the mechanical properties of silt and reduce the water content. The traditional way is to add curing agents such as cement and lime, and also use mineralized garbage as mixed additives. These methods need to add a lot of materials, the amount of which is