A method of wetland sludge treatment

Abstract

The invention belongs to the technical field of environment engineering and particularly relates to a wetland silt treatment method. At first, a hygrophyte planting region is selected and subjected to construction layout, the area of the hygrophyte planting region is determined, then a backfill pond is excavated, silt needing to be handled is extruded and backfilled into the backfill pond in a layered mode, hygrophyte materials needing to be planted are prepared, a worker standing on a dam body adopts the rice seedling-throwing technology and scatters the hygrophyte materials on the surface of silt in the backfill pond, and after scattering is finished, the hygrophyte materials scattered on the surface of the silt are made to be fully contacted with the silt. Because the silt surface will evaporate and dry up, the silt surface is kept wet through manual intervention. By using the nutritive peculiarity of the silt, adopting certain plant cultivation methods and selecting appropriate plant variety matching, phytocoenoses are rapidly constructed, biodiversity is maintained, silt treatment work is simultaneously completed, and different landscape styles are created on this basis.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering, and in particular relates to a method for treating wetland sludge. Background technique [0002] At present, with the development of society, there are more and more ecological dredging and wetland projects in our country. The first thing to do in the project is to clean up the bottom mud, which is easy to cause a large amount of mud accumulation. Inconvenient; some are buried deep on the spot, which is easy to cause pollution to groundwater sources due to the eutrophication of the silt; some are even secretly discharged into other rivers and fish ponds, causing secondary pollution; and some are treated with cement on site. The method of mixing and curing, but this method has more residues, which is easy to cause further pollution, and there will be problems of poor growth and even death in the later vegetation restoration. [0003] However, in order to improve the land utiliza...

AI Technical Summary

Problems solved by technology

[0002] At present, with the development of society, there are more and more ecological dredging and wetland projects in our country. The first thing to do in the project is to clean up the bottom mud, which is easy to cause a large amount of mud accumulation. Inconvenient; some are buried deep on the spot, which is easy to cause pollution to groundwater sources due to the eutrophication of the silt; some are even secretly discharged into other rivers and fish ponds, causing secondary pollution; and some are treated with cement on site. The method of mixing and curing, but this method has more residues, which is easy to cause further pollution, and there will be problems of poor growth and even death of vegetation restoration in the later stage

[0003] However, in order to improve the land utilization rate, the thickness of the silt accumulation is generally deep, and the safety hazard is relatively large. At the same time, due to the change of the weather, it is prone to repeated situations and turns into a swamp.

[0004] After retrieval, the existing patents include: a method for treating polluted sludge in cities and surrounding rivers (application number: 01132079.6), which is essentially a landfill treatment that may affect groundwater quality; a sludge treatment method ( Application number: 200710067267.2) requires a high temperature of 200°C and consumes a lot of energy, which is not suitable for large-scale engineering processing