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Soil remediation system and method of solar hot air reinforced bioelectrochemical coupling biochar

A bioelectrochemical and solar hot air technology, applied in the field of soil remediation, can solve the problems of not having the function of ventilation and degradation of macromolecular organic matter, and achieve the effects of preventing water shortage in the living environment of microorganisms, increasing the effective degradation radius, and improving the elution rate

Pending Publication Date: 2020-11-10
GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent is an ectopic restoration device, which also needs to be equipped with auxiliary systems such as soil excavation, transportation, loading and unloading. It is not suitable for use in situations where there are structures on polluted soil that are not suitable for excavation, and this patent does not have microbial resistance. Ventilation Degradation Function of Macromolecular Organic Compounds

Method used

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  • Soil remediation system and method of solar hot air reinforced bioelectrochemical coupling biochar

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Effect test

Embodiment 1

[0093] The invention provides a soil remediation method for solar hot air enhanced bioelectrochemically coupled biochar, the remediation method comprising:

[0094] (1) The nutrient solution spray layer 5 continuously sprays the nutrient solution into the soil, and the nutrient solution includes 1 g / L sodium dihydrogen phosphate, 10 g / L glucose, 2 g / L ammonium chloride, vitamins and amino acids;

[0095] (2) After the air is heated to 30°C by the solar heat collection system 1, it is sprayed into the soil through the ventilation pipe 15, and the microorganisms in the soil degrade the organic pollutants in the soil under the activation of the nutrient solution;

[0096] (3) The eluent spray layer 6 intermittently sprays the eluent in the soil, the eluent includes stearic acid of 10mg / L, the time of one spray is 20min, and the eluent is sprayed twice adjacently The interval between them is 3 minutes;

[0097] (4) The eluent forms an eluting waste liquid after eluting the organi...

Embodiment 2

[0103] The invention provides a soil remediation method for solar hot air enhanced bioelectrochemically coupled biochar, the remediation method comprising:

[0104] (1) The nutrient solution spray layer 5 continuously sprays the nutrient solution into the soil, and the nutrient solution includes disodium hydrogen phosphate of 2g / L, sodium acetate of 30g / L, ammonium sulfate of 4g / L, vitamins and amino acids;

[0105] (2) After the air is heated to 32°C by the solar heat collection system 1, it is sprayed into the soil through the ventilation pipe 15, and the microorganisms in the soil degrade the organic pollutants in the soil under the activation of the nutrient solution;

[0106] (3) The eluent spray layer 6 intermittently sprays the eluent in the soil, the eluent includes 30mg / L of quaternary ammonium salt, the time of one spray is 17min, and the eluent is sprayed twice adjacent The interval between them is 2.7min;

[0107] (4) The eluent forms an eluting waste liquid after...

Embodiment 3

[0113] The invention provides a soil remediation method for solar hot air enhanced bioelectrochemically coupled biochar, the remediation method comprising:

[0114] (1) The nutrient solution spray layer 5 continuously sprays the nutrient solution into the soil, and the nutrient solution includes 3g / L sodium dihydrogen phosphate, 50g / L sodium formate, 6g / L ammonium chloride, vitamins and amino acids;

[0115] (2) After the air is heated to 35°C by the solar heat collection system 1, it is sprayed into the soil through the ventilation pipe 15, and the microorganisms in the soil degrade the organic pollutants in the soil under the activation of the nutrient solution;

[0116] (3) The eluent spray layer 6 intermittently sprays the eluent in the soil, the eluent includes 50mg / L lecithin, the time of one spray is 15min, and the eluent is adjacent to two times of spraying. The interval between them is 2.5min;

[0117] (5) The eluent forms an eluting waste liquid after eluting the or...

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Abstract

The invention provides a soil remediation system and method of solar hot air reinforced bioelectrochemical coupling biochar. The soil remediation system comprises a soil filling chamber and an electrochemical reaction chamber which are arranged up and down and communicate with each other; wherein the soil filling chamber is filled with soil, at least one ventilation pipe is buried in the soil, theventilation pipe is externally connected with a solar heat collection system, and at least one spraying layer is arranged above the soil filling chamber; and an anode electrode and a cathode electrode are arranged in the electrochemical reaction chamber and are respectively connected with a solar photovoltaic energy storage system. The biochar is doped in the electrochemical reaction chamber andhas good electrochemical activity; when the biochar is dispersed in the elution waste liquid, the conductivity of the elution waste liquid is certainly enhanced, so that the formation of a conductivenetwork of the elution waste liquid is promoted, and the effective degradation radius of organic pollutants in the elution waste liquid is increased.

Description

technical field [0001] The invention belongs to the technical field of soil remediation, and relates to a soil remediation system and method, in particular to a soil remediation system and method for solar hot air enhanced bioelectrochemical coupling biochar. Background technique [0002] With the rapid development of economy, the problem of soil pollution has become more and more prominent. The "running, leaking, dripping, and leaking" of many chemical plants, oil extraction fields, gas stations, raw material tank farms and other facilities have caused the land to be seriously polluted by petroleum hydrocarbons and other organic compounds, which remain in the soil or migrate to the atmosphere or groundwater Among them, polluting the ecological environment will cause direct or indirect harm to human life and health. The land after the relocation of the enterprise cannot be developed. In recent years, accidents caused by improper disposal of polluted land abound. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09C1/02B09C1/10C02F9/06C02F101/30
CPCB09C1/02B09C1/10C02F1/001C02F1/46C02F2101/30
Inventor 刘勇胡小吐杨森林胡静龄钟璐杨颖欣
Owner GUANGDONG J TECH ENVIRONMENT SCI CO LTD
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