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Phytoremediation method for pentachlorophenol contaminated soil

A pentachlorophenol and polluted soil technology, applied in the field of phytoremediation of soil organic pollution, can solve the problems of slow growth rate, small biomass, dwarf plants, etc., and achieve the effects of accelerating restoration and increasing restoration speed.

Active Publication Date: 2019-12-03
HUNAN HENGKAI ENVIRONMENT TECH INVESTMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the restoration plants are short in size, slow in growth, and small in biomass, which has caused great limitations in practical engineering.

Method used

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  • Phytoremediation method for pentachlorophenol contaminated soil
  • Phytoremediation method for pentachlorophenol contaminated soil

Examples

Experimental program
Comparison scheme
Effect test

experiment example 1

[0034] Experimental Example 1: The implementation location is a certain district of Changsha City. Before the experiment, 250 kg of pentachlorophenol-contaminated soil was excavated from the abandoned pentachlorophenol production workshop of a chemical plant, and the pentachlorophenol content was measured to be 10.05 mg / kg after mixing evenly. Be 50cm with diameter, the deep gallon pot of 45cm carries out pot experiment, and each pot is filled with 25kg pentachlorophenol contaminated soil, 2 treatment groups (numbering is processing 1, processing 2), a control group (numbering is CK), A total of 9 pots. Plant a weeping willow in each pot of treatment 1, weigh 3 g of the seeds of the canopy, mix and sow the seeds of alfalfa 5 g evenly; process 2 plant a weeping willow in each pot, weigh 1.5 g of the seeds of the canopy and 2.5 g of the seeds of the alfalfa, mix and sow them evenly; the control group Do not sow any plants and otherwise manage the same. After 5 months of planti...

experiment example 2

[0038] Experimental Example 2: The implementation site is an abandoned chemical plant in a certain district of Zhuzhou City. Before the experiment, the hardened ground of an abandoned pentachlorophenol production workshop in a chemical plant was removed, and bricks and cement blocks that were not suitable for plant growth were removed. Choose 300m 2 Contaminated soil was divided into three plots, which were successively set as treatment 1, treatment 2, and CK. Treatment 1 planted 100 weeping willows, mixed sowed canopy and alfalfa between the rows (300g canopy and 300g alfalfa seeds were mixed evenly and sowed); treatment 2 planted 100 weeping willows, and sowed canopy and alfalfa mixed between the rows (200g canopy and alfalfa Mix with 400g alfalfa seeds evenly before sowing); CK is not treated. Treatment 1, treatment 2, CK and other field management methods are the same. After 5 months of planting, the changes in soil pentachlorophenol content were measured every 15 days....

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Abstract

The invention provides a phytoremediation method for soil pentachlorophenol pollution. The phytoremediation method comprises the following steps: selecting salix babylonica, conyza canadensis and alfalfa as plants; detecting the content of pentachlorophenol in the to-be-remediated soil; planting the salix babylonica in the pentachlorophenol contaminated soil; carrying out mixing sowing on conyza canadensis and alfalfa seeds among plant rows of the salix babylonica. Through the provided phytoremediation method for the soil pentachlorophenol pollution, pentachlorophenol contaminated soil can besimply and quickly remediated.

Description

technical field [0001] The invention relates to the technical field of soil organic pollutant treatment, in particular to a phytoremediation method for soil organic pollution Background technique [0002] Pentachlorophenol is widely used in wood preservation, sterilization, weed control and schistosomiasis control in industrial and agricultural production, and its sodium salt is the main drug for killing snails in the control of schistosomiasis. Due to its stable chemical properties, it is not easy to degrade and remains in the environment. It enters the human body through the food chain and can accumulate in the liver, kidney and fat for a long time. It not only has direct harm to the human body, but also may be potentially dangerous genetically. Soil pentachlorophenol pollution enters the food chain along with water, air and food, causing serious health problems to people. Therefore, it is imperative to remediate soil pentachlorophenol pollution. At present, physical and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/10
CPCB09C1/105
Inventor 王贤芳邢汉君蒋俊聂芳
Owner HUNAN HENGKAI ENVIRONMENT TECH INVESTMENT CO LTD
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