PREPARATION OF SOLID WASTE-BASED SOIL CONDITIONERS AND THEIR ECOLOGICAL REMEDIATION EFFECTS ON THE MINING AREA

SONG Huiping; AN Quan; SHEN Wuyan; FENG Zhengjun; FU Yuanhong; JIN Dapeng

doi:10.13205/j.hjgc.202212025

Volume 40 Issue 12

Nov. 2022

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SONG Huiping, AN Quan, SHEN Wuyan, FENG Zhengjun, FU Yuanhong, JIN Dapeng. PREPARATION OF SOLID WASTE-BASED SOIL CONDITIONERS AND THEIR ECOLOGICAL REMEDIATION EFFECTS ON THE MINING AREA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 187-195,230. doi: 10.13205/j.hjgc.202212025

Citation:

SONG Huiping, AN Quan, SHEN Wuyan, FENG Zhengjun, FU Yuanhong, JIN Dapeng. PREPARATION OF SOLID WASTE-BASED SOIL CONDITIONERS AND THEIR ECOLOGICAL REMEDIATION EFFECTS ON THE MINING AREA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 187-195,230. doi: 10.13205/j.hjgc.202212025

Citation:

SONG Huiping, AN Quan, SHEN Wuyan, FENG Zhengjun, FU Yuanhong, JIN Dapeng. PREPARATION OF SOLID WASTE-BASED SOIL CONDITIONERS AND THEIR ECOLOGICAL REMEDIATION EFFECTS ON THE MINING AREA[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(12): 187-195,230. doi: 10.13205/j.hjgc.202212025

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PREPARATION OF SOLID WASTE-BASED SOIL CONDITIONERS AND THEIR ECOLOGICAL REMEDIATION EFFECTS ON THE MINING AREA

doi: 10.13205/j.hjgc.202212025

1. Shanxi Yellow River Laboratory, Institute of Resources and Environmental Engineering, Shanxi University, Taiyuan 030006, China;
2. Shanxi Dadi Minji Ecological Environment Co., Ltd, Taiyuan 030012, China;
3. Shanxi Qinghuan Nengchuang Environmental Technology Co., Ltd, Taiyuan 030012, China

Received Date: 2022-02-24
Available Online: 2023-03-23

Abstract

Abstract

In China, the output of coal gangue is large, and the utilization rate is low. A large amount of accumulation has not been reasonably utilized, resulting in the wasting of land resources and environmental pollution. In this paper, coal gangue was used as the main raw material, and porous materials were obtained by adding aluminum powder for foaming and curing, and then fermented with waste organic matter and carbon-containing auxiliary materials to make solid waste-based soil conditioners. The soil physicochemical properties of spraying solid waste-based soil conditioner (SWSC), arbuscular mycorrhizal fungi (AMF) and solid waste-based soil conditioner coupled with mycorrhizal fungi (SWSC+AMF), and their effects on the growth of typical plants in the mining area were compared. The accumulation of heavy metals in plants under different treatments was compared. A proportion of gangue and cement at 85%∶15% was best for making the porous material. Chicken manure and weathered coal were selected as organic matter and carbon excipients. When the ratio of porous particles, chicken manure and weathered coal was 4∶2∶4, the prepared solid waste-based soil conditioner was the best. When the mass ratio of porous particles, chicken manure and weathered coal was 4∶2∶4, the prepared solid waste-based soil agent conditioner was the best. The whole process of preparation and application of soil conditioners was evaluated for heavy metal safety, and the heavy metal content met the limit values in the corresponding national standards. The content of organic matter in the soil sprayed with SWSC+AMF was 35.2 mg/kg, the content of available potassium and available phosphorus was 261 mg/kg and 278 mg/kg, and the content of alkaline phosphatase could reach 293.07 mg/kg. Moreover, spraying SWSC+AMF could promote the growth of plant height and root length, which can effectively reduce the accumulation of Cd, Pb and Ni element in Elymus grass, and improve soil structure and fertility.
- gangue,
- soil conditioner,
- mycorrhizal fungi,
- heavy metal,
- ecological restoration

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References(38)

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