Novel comprehensive treatment and ecological restoration technology for river sludge

Abstract

The invention provides a novel comprehensive treatment and ecological restoration technology for river sludge, and relates to the technical field of river ecological treatment. The technology comprises the steps of stopping a river; settling the sludge; pumping out river water and whitening sludge; performing high-temperature fire spraying burning on sludge, wherein the sludge does not need to be pumped out or dug out from the bottom of a river channel, the water environment cannot be damaged, organic fertilizer is mixed and stirred after being washed with cold water, the organic fertilizer comprises fertile soil, ceramsite sand, coal cinder, biological sand and organic sand, and the sludge containing a small amount of organic matter is converted into the organic fertilizer rich in nutrients; promoting growth of aquatic plants, and improvement of the treatment effect and increasing the ecological restoration speed; removing the dam and discharging water, and adding microbial flora for the second time for sludge activation treatment; submerged plants are planted at the bottom of the river channel, and aquatic animals and microorganisms are stocked in water. The treatment method has the advantages of high efficiency, environmental protection, resource saving and the like, and is beneficial to continuous restoration of river ecology.

Description

technical field [0001] The invention relates to the technical field of river channel ecological control, in particular to a novel ecological restoration technology for comprehensive control of river silt. Background technique [0002] With the continuous development of urban industrialization, the discharge of sewage has increased significantly year by year, and a large amount of sewage has been directly discharged into the river. Coupled with rainfall, the runoff, sediment and sewage produced on the surface of the river bank have re-entered the river circulation system, resulting in a decrease in the flow rate of the river. Slowly, the silt surface of many rivers is raised, and because the rich nitrogen, phosphorus and organic pollutants contained in the silt will directly or indirectly enter the water body and surrounding soil, the increase of nitrogen and phosphorus elements will cause serious eutrophication of the water quality , There are many kinds of organic pollutant...

AI Technical Summary

Problems solved by technology

[0002]With the continuous development of urban industrialization, the discharge of sewage has increased significantly year by year, and a large amount of sewage has been directly discharged into rivers. Sand and sewage re-enter the river circulation system, causing the flow rate of the river to slow down, and the sedimentation surface of many rivers is raised, and because the rich nitrogen, phosphorus and organic pollutants contained in the silt will directly or indirectly enter the water body and surrounding soil , the increase of nitrogen and phosphorus elements will cause serious eutrophication of water quality, and there are many kinds of organic pollutants in sludge, most of which are stable in nature, highly toxic, carcinogenic and mutagenic, and will seriously affect aquatic ecosystems

[0003] Most of the existing river ecological governance methods only focus on one aspect of river water governance, without forming a long-term and stable comprehensive governance plan. The governance effect is one-sided and the duration is short, which cannot fundamentally solve the problem of river water pollution. There are also some river ecological governance The method is aimed at the treatment of the silt at the bottom of the river, and can achieve a certain treatment effect, but the silt needs to be pumped out or dug out during the treatment of the silt, which is easy to cause damage to the water environment, and the content of organic matter in the treated silt decreases, which affects the growth of aquatic plants , resulting in a slow river ecological recovery