Configuration method for purifying polycyclic aromatic hydrocarbon pollution in coastal wetland by suaeda salsa

Abstract

The invention belongs to the field of environmental protection and in particular relates to a configuration method for purifying polycyclic aromatic hydrocarbon pollution in a coastal wetland by suaeda salsa. The configuration method is characterized by comprising the following steps of (1) configuring different densities: collecting suaeda salsa seeds, setting at least three density gradients, carrying out differential sowing separately in corresponding flowerpots according to the density gradients, carrying out thinning within a certain time to achieve a certain number of seedlings in each flowerpot, and carrying out watering, pest control and fertilizer spraying in a growing period; (2) simulating different pollution scenes: filling each flowerpot with 12 kg of potting soil which is clean soil in wet weight, configuring the flowerpot soil by petroleum mass fraction which is obtained by dividing petroleum mass by soil mass, and accurately weighing quantified petroleum in proportion and dissolving the petroleum in petroleum ether; (3) monitoring growing characteristics: recording the branching number of suaeda salsa under different treatments; and (4) analyzing an experimental result to determine a density configuration scheme. The invention provides the configuration method which is excellent in configuration and obvious in repair effect.

Description

technical field [0001] The invention belongs to the field of environmental protection, and in particular relates to a configuration method for purifying polycyclic aromatic hydrocarbon pollution in coastal wetlands by planting Suaeda salsa. Background technique [0002] Due to their widespread, refractory, bioaccumulation and carcinogenic activity, polycyclic aromatic hydrocarbons have brought many adverse effects to nature and human society, and have become a major problem threatening the environment. Traditional restoration methods include foreign soil replacement, foreign soil covering, high-temperature in-situ vitrification, soil leaching, etc. Although the repair speed is fast, the input cost is high and it is easy to cause secondary pollution; bioremediation mainly uses biological absorption and degradation It is one of the main environmental pollution control technologies widely accepted at present to degrade pollutants in the environment through the functions of , tr...

AI Technical Summary

Problems solved by technology

Traditional restoration methods include foreign soil replacement, foreign soil covering, high-temperature in-situ vitrification, soil leaching, etc. Although the repair speed is fast, the input cost is high and it is easy to cause secondary pollution; bioremediation mainly uses biological absorption and degradation , transformation and other functions to degrade pollutants in the environment is one of the main environmental pollution control technologies widely accepted at present

[0003] Although some studies have shown that Suaeda salsa can be used as a repairing plant, how to plant it and what kind of density configuration it can play a better repairing effect, there is still a lack of an effective screening method for the effective density configuration of Suaeda salsa, so for this problem, this method provides a configuration technology for the optimal planting density of Suaeda salsa

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