A method for ecological interception of water pollutants in urban river slope green space

Abstract

The invention discloses an ecological water pollutant interception method for urban river bank greenbelts. The method applicable to urban river bank greenbelts includes: planting a proper quantity of trees with high ecological values on river banks, and digging ditches along the river banks, wherein the ditches are proper in width and pass through tree roots; digging annular pits in proper sizes at the tree roots, forming a 'biological purifier' in each pit, filling soil with a proper quantity of rice hull charcoals into the trenches and the pits and leveling; uniformly paving rice hull charcoals 3cm in depth on the overall surfaces of the river banks to improve the soil, and planting lawns with purification functions to realize a multi-level purification function. In application of the method to the urban river banks, when waste water flows through the banks to enter river channels, pollutants are absorbed step by step, the waste water is finally well purified, and accordingly the amount of the pollutants entering rivers is decreased. Normal functions of the river banks can be kept while beautiful urban landscapes are maintained, technical simplicity and low operation cost are realized, and the river channels are protected from being polluted by pollutants.

Description

technical field [0001] The invention relates to a method for ecologically intercepting water pollutants in urban river bank greenbelts. [0002] It belongs to the field of ecological technology. Background technique [0003] As a channel for shipping traffic, rivers not only provide daily water sources for urban residents, but also create economic value as landscape water. However, in recent years, due to the indiscriminate discharge of domestic sewage and industrial wastewater, and the excessive use of pesticides and fertilizers, the water quality of rivers has been declining. Contaminants inside are minimized as much as possible. [0004] At present, the commonly used methods for intercepting water body pollutants mainly include wetland engineering technology, ecological ditch technology, coastal buffer zone technology, etc. These technologies have the advantages of good ecological benefits and low operating costs. Most of them use plants or soil to intercept pollutants...

AI Technical Summary

Problems solved by technology

Among these technologies, wetland projects generally occupy a large area and have weak resistance to harsh weather; the ditch system is relatively complex, and the design investment is relatively large; the coastal buffer zone is easily affected by the water and land system, and has obvious edge effects

Some of the current research applications have large limitations and high technical input costs

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