Pipe gallery sludge and riverway bottom mud collaborative resource treatment and utilization method

Abstract

The invention discloses a pipe gallery sludge and riverway bottom mud collaborative resource treatment and utilization method which comprises the following steps: taking pipe gallery sludge and riverway bottom mud, and respectively carrying out gravity settling concentration to obtain concentrated pipe gallery sludge and concentrated riverway bottom mud; respectively drying the concentrated pipe gallery sludge and the concentrated river sediment to obtain dried pipe gallery sludge and dried river sediment; respectively crushing and sieving the dried pipe gallery sludge and the dried river sediment to obtain pipe gallery sludge powder and river sediment powder; uniformly mixing the pipe gallery sludge powder, the river sediment powder, an inorganic additive and an adhesive to obtain a raw material for preparing the porous ceramsite building block; adding water into the raw materials and uniformly stirring to obtain a porous ceramsite building block raw material; and preparing the porous ceramsite building block from the porous ceramsite building block raw material. Porous ceramsite building blocks are prepared from pipe gallery sludge and river sediment, and pollutants are fixed through sintering, so that the harm of raw materials is reduced; the dehydration efficiency is higher, the occupied area is smaller, and the peculiar smell is small.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a collaborative resource disposal of pipe gallery sludge and river bottom sludge and a utilization method thereof. Background technique [0002] In recent years, with the rapid development of urban construction, urban waterlogging problems frequently occur, and dredging of pipe corridors and river channels is the main solution. At present, sufficient attention has not been paid to the disposal of urban municipal pipe gallery sludge in China. For a long time, simple and extensive disposal methods have been adopted for the pipe gallery sludge after dredging. Most of the pipe gallery sludge is directly buried without treatment, and only a few cities have adopted Dispose of in landfill after natural drying. However, due to the large annual output of pipe gallery silt, the annual output of pipe gallery silt in first-tier and second-tier cities reaches hundreds of...

AI Technical Summary

Problems solved by technology

The above-mentioned process has problems such as low drying efficiency, large floor space, and peculiar smell in the production process, and most of the finished ceramsite products need to be reprocessed before they can be used as prefabricated building materials.

In order to solve the above technical problems, according to the physical and chemical characteristics of urban pipe gallery silt and river bottom sludge, and aiming at the shortcomings and pain points of the current disposal technology, it is urgent to develop a new resource disposal method

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