Method for safely utilizing lead-polluted soil

A lead-contaminated soil and safe technology, applied in the field of safe utilization of lead-contaminated soil, can solve the problems of lead-contaminated environment, unreasonable and inappropriate, and achieve the effects of preventing pollution from spreading, realizing risk control and overcoming coercion effects

Active Publication Date: 2021-01-15
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unreasonable and inappropriate disposal of industrial wastewater, waste gas and waste residues, leading to lead pollution environmental problems

Method used

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  • Method for safely utilizing lead-polluted soil
  • Method for safely utilizing lead-polluted soil
  • Method for safely utilizing lead-polluted soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] Preparation of Cyclocarya paliurus seedlings: Select Cyclocarya paliurus seeds collected that year, after drying in the shade, removing wings, and gibberellin treatment, sow the seeds on the sand bed in the greenhouse in December of that year. After the seeds germinate, select seedlings with a seedling height of 3-5cm and fully expanded cotyledons and place them in the nutrient soil (peat soil and perlite mixed according to the weight of 10:1) in the greenhouse for further cultivation to keep the substrate moist. When the seedlings grow to a seedling height of 7-10cm, they can be transplanted.

[0031] Biochar organic fertilizer: It is made by mixing 95% organic fertilizer and 5% rice straw biochar. Among them, the organic fertilizer comes from the fermented organic fertilizer of livestock and poultry manure sold in the market, its organic matter content is greater than 45%, and the total nutrient (nitrogen, phosphorus, potassium) is greater than 5%. Biomass charcoal i...

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Abstract

The invention relates to a method of safely utilizing lead-polluted soil. According to the technical scheme, the method comprises the steps that after the lead-polluted soil is subjected to impurity removal, crushing, grinding and screening with 2 mm sieve pores, biomass charcoal organic fertilizer accounting for 5% of the mass of the soil is evenly mixed and applied to serve as plant growth basefertilizer, and the biomass charcoal organic fertilizer is formed by mixing 95% of organic fertilizer and 5% of rice straw biomass charcoal; and cyclocarya paliurus seedlings which grow strongly are selected to be transplanted, weeding and watering are conducted regularly, and the soil moisture content is kept to be 30%-60% of the field water-holding capacity. According to the technology, the pollutant passivation capacity of the biomass charcoal organic fertilizer and the pollutant endurance capacity of cyclocarya paliurus are fully utilized, the cyclocarya paliurus is safely planted on the lead-polluted soil, and soil pollution risk prevention and control and economic value output are achieved.

Description

technical field [0001] The invention belongs to the technical field of safe utilization of lead-contaminated soil, and relates to a technical method for safely planting lead-contaminated soil by using a rare tree species Cyclocarya paliurus. Background technique [0002] Lead is an important industrial metal element, which is widely used in industrial production as an industrial raw material. Unreasonable and inappropriate disposal of industrial waste water, waste gas and waste residues lead to environmental problems of lead pollution. Lead is toxic. Long-term lead intake or accumulation in the body can easily cause brain and nervous system dysfunction and significantly affect physical and mental health, especially in children. The problem of children's blood lead has become one of the key issues of national environmental health. According to statistics, in the past 50 years, about 7.83×10 5 Tons of lead are discharged into the soil environment, causing soil lead pollution...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01B79/00A01G23/04A01G17/00A01G24/15A01G24/28
CPCA01B79/02A01B79/00A01G23/04A01G17/005A01G24/28A01G24/15Y02A40/22
Inventor 陈永山冯莹许敬华钱莲文
Owner QUANZHOU NORMAL UNIV
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