Composite ecological intercepting padding material and preparation method

Abstract

The invention relates to a composite ecological intercepting padding material and a preparation method. The composite ecological intercepting padding material has an interception effect on nitrogen and phosphorus pollutants greatly increased due to urban storm flows and also has wave resistance and soil reinforcement effects on revetments for rivers and lakes. The padding material is prepared into a modularized revetment material with nitrogen and phosphorus absorption property and a large number of micro air spaces through the sintering method by using the nitrogen and phosphorus absorption function and the thermal stability of a special padding material. The padding material can restore a water body with a great change in load due to nitrogen and phosphorus pollution through the bio-contact degradation function and the absorption function, optimize and improve the water quality restoration function of the ecological revetment technology and solve the problem on placing and fixing the padding material in river and lake water bodies.

Description

technical field [0001] The invention relates to an ecological intercepting filler and a preparation method thereof, in particular to a composite material which has the effect of intercepting the greatly increased nitrogen and phosphorus pollutants caused by urban rainstorm runoff, and can also be used as river and lake revetment to prevent waves and stabilize soil. Type ecological interception filler and preparation method thereof. Background technique [0002] With the expansion of cities and economic development, the eutrophication process of urban rivers and lakes has been greatly accelerated in the past ten years. At present, the water bodies of rivers and lakes in most cities in China are already in a state of severe eutrophication. The sewage system in many cities in my country is a combined rain and sewage system. When it rains, the pollutants stranded on the road will flow into the rivers and lakes with the rain, causing the concentration of nitrogen and phosphorus i...

AI Technical Summary

Problems solved by technology

[0004] However, no matter whether it is natural slope protection, hard slope protection or ecological slope protection, there is a lack of specific and effective repair technology for the phenomenon that the nitrogen and phosphorus pollutant load in rivers and lakes caused by typical urban rainstorm runoff varies greatly in a short period of time

Even for natural slope protection and ecological slope protection that are better at maintaining water quality, the former mainly relies on the absorption and assimilation of plants to remove nitrogen and phosphorus substances, and it is difficult to achieve the removal effect on high-concentration pollutants in a short period of time. The latter uses gravel base, geotextile, etc. Microbial carriers reduce the concentration of pollutants in the water body through biological contact, lack tolerance to excessively high or low pollution loads, and the treatment effect will drop sharply in winter when the microbial activity is low