Method for producing ecological environment-friendly nutrition soil by using lake sludge

Abstract

The invention discloses a method for producing ecological environment-friendly nutrition soil by using lake sludge. The key point of the technical scheme is that the method comprises the following steps of: adding materials into a double-shaft mixer and stirring, after uniformly stirring, conveying to a roller machine, extruding into irregular particles, killing bacteria and insects, and drying to obtain an ecological environment-friendly nutrition soil finished product. The method has the characteristics of simplicity, high production efficiency and low cost; the lake sludge with high water content is not needed to be dehydrated; and the ecological environment-friendly nutrition soil of various formulas can be processed in the dredging fields of ports, channels, lakes and rivers, and a large amount of soil resources are saved. The ecological environment-friendly nutrition soil is complete in nutrition component, high in fertilizer efficiency, durable in water retention capacity, and is non-toxic, innocent and odourless, and can provide nutrient elements which are required by growth of plant, and reduce the damage of pathogenic bacteria and pests to plant. The method is suitable for producing the ecological environment-friendly nutrition soil of various formulas by using lake sludge as a main raw material.

Description

technical field [0001] The invention relates to the soil field, in particular to a method for producing eco-environmental protection nutrient soil by using lake silt. Background technique [0002] In order to improve the water quality of rivers and lakes, ensure the normal flood discharge capacity of rivers and the smooth flow of waterways and ports, my country has carried out large-scale dredging and dredging projects. The amount of dredged silt in the delta is about 80 million cubic meters. In the next ten years, dredging and dredging projects in water conservancy, rivers, lakes and ports will still produce a large amount of dredged silt, which has become an unavoidable reality. [0003] The dredged silt produced in the dredging project is usually disposed of by stacking or discarding. On the one hand, it not only causes a lot of waste of land resources, but also causes irreparable damage to the ecological environment. On the other hand, most of the dredged silt contains he...

AI Technical Summary

Problems solved by technology

[0007] The disadvantages of the above patents are: the mixed fermentation of straw, cow dung, edible fungus residue, sludge and organic fiber used in the "rocky slope ecological protection greening matrix" cannot achieve the effect of complete fermentation and sterilization , the production cost is high; although attapulgite powder can play the role of binder, not all attapulgite powder can play the role of binder, only attapulgite clay powder with higher viscosity is fully stirred Only under certain conditions can it play the role of adhesive