Intuitively understand the sewage sludge, and the manufacturer of sludge slurry treatment equipment will explain it clearly in this article!
The pipeline sediment removed during pipeline maintenance and dredging is also called trench sludge. Its source is the particles and impurities that enter the drainage pipe system from domestic sewage and industrial wastewater, as well as large particles that enter the drainage pipe network. Garbage
The pipeline sediment removed during pipeline maintenance and dredging is also called trench sludge. Its source is the particles and impurities that enter the drainage pipe system from domestic sewage and industrial wastewater, as well as large particles that enter the drainage pipe network. Garbage, construction waste, construction site mud, etc. are produced at many points, in a wide area, scattered, irregular and in small quantities.
Since the sources of sewage sludge are complex, and the composition fluctuates greatly depending on the city, land type and pipeline type, it is necessary to improve the understanding of the properties of sewage sludge in order to provide appropriate technical paths and treatment methods for its treatment and disposal. plan. Different land use types will also affect the properties of trench sludge. The sludge near urban main roads usually contains more sand and gravel, while the sludge in residential areas usually has higher organic matter content and more domestic waste. In commercial areas with intensive catering, the organic matter content of sludge is high, and the requirements for gravel cleaning and organic matter removal are higher.
When trench sludge overflows in pipelines, it will cause pollution to the receiving water body. Therefore, the type and concentration of pollutants contained should also be paid attention to. In addition to the content of carbon, nitrogen, phosphorus and other pollutants, the content of heavy metals in trench sludge cannot be ignored. In addition to the possible environmental pollution caused by heavy metals, there are often strict requirements on the heavy metal content in trench sludge disposal products or resource utilization products. The heavy metal content in trench sludge is also closely related to the type of pipe network. The heavy metal content in the channel sludge of the combined pipe network or the pipe network in residential areas and industrial areas is relatively high. To be more precise, it is closely related to human activities.
The main ditch sludge treatment technologies include natural drying, gravity dehydration and comprehensive treatment. Natural drying is suitable for ditch sludge with low organic matter content (such as rainwater pipe ditch sludge), and areas with relatively dry climate, less rainfall, limited land occupation, and environmental sanitation conditions permitting. Gravity dehydration is suitable for trench sludge with high moisture content (such as 95% moisture content). After 24 hours of sedimentation, the moisture content can be reduced to about 70%, which is beneficial to sludge transportation and can be used as a trench sludge transfer station. Sludge reduction process. At present, generally Tonggou sludge stations are designed with sludge storage tanks, and the volume is designed according to the processing capacity of not less than 2 days.
In view of the characteristics of high moisture content, complex composition and high risk of secondary pollution in the residual mud in the municipal sewage pipe network, Desen mud treatment equipment manufacturer specially equipped with forced scrubbing equipment and high-efficiency multi-stage sorting equipment to realize the treatment of sediment, The debris is effectively separated to meet the needs of reduction, harmlessness and resource disposal of the residual mud in the ditch.
