Pot experiment of geochemical engineering for improving barren loess with solid waste
-
摘要: 黄土高原以马兰组为主体的风积黄土矿物组分单一，以石英和长石为主，缺乏蓄水性矿物和释放养分的暗色矿物，使土壤失去了肥力基础。这种先天性的缺陷是造成黄土地贫瘠的地质根源，也是自然状态的黄土地貌区不能支撑高密集植被和高大乔木类植物生长，最终造成黄土高原水土流失严重的根本原因。本文利用建筑垃圾、煤矸石、铝矿渣、铜尾矿等固废富含Cu、Zn、Fe、Mn、Mo、B、Mg、S 等元素的地球化学特征及含有丰富云母、角闪石、辉石、蛭石等矿物的特点，制作成固废粉与风积黄土配比成人工土壤进行了盆栽试验，分析了固废粉在提高黄土养分和保水抗旱功能方面的能力。按照[原黄土]/[固废粉]=0/10；1/9；3/7；5/5；8/2；10/0的六组不同比例分别对小麦和白菜进行盆栽试验，结果表明黄土中加入固废粉后对提高植物生长能力、抗旱能力有明显作用，[原黄土]/[固废粉]=8/2 为最优比例。Abstract: Aeolian loess on the Loess Plateau in China are dominated by the Malan formation, with single components as quartz and felddrite mainly, and lack of water storage minerals and dark minerals that release and supply nutrients, which makes the soil lose the foundation of fertility.This is the congenital defect of the geological root cause of the barren loess, and also the fundamental reason that the natural loess landform area can't support the growth of high-dense vegetation and tall trees, and make the resulting of serious soil erosion .The pot experiment based on the geochemical characteristics of Cu, Zn, Fe, Mn, Mo, B, Mg, S which are riched in construction wastes, coal gangue, aluminum slag, copper tailings and other solid wastes and the characteristics of riching in mica, amphibole, pyroxene, vermiculite and other minerals.The pot experiment made these solid wastes into powder and mixed with aeolian loess to make artificial soil, and analyzed the ability of solid wastes powder to improve the loess nutrient and water retention and drought resistance of loess.Six groups were set up in the pot experiment with the ratio of [original loess]/[solid wastes powder]=0/10, 1/9, 3/7, 5/5, 8/2, 10/0 .And cabbage and wheat were selected as the test subjects.It showed that the solid wastes powder added to barren loess could obviously improve the growth ability and drought resistance of plants, and the best ratio was [original loess]/[solid wastes powder]=8/2.
-
Key words:
- solid wastes /
- barren loess /
- geochemical engineering /
- pot experiment
-
-
[1] 俞静.城市固体废弃物利用与处置[J].中国资源综合利用,2020, 38(9):123-125.
[2] 杨子江.建筑垃圾对城市环境的影响及解决途径[J].2003(04):60-63.
[3] 郝栋.利用污泥、粉煤灰和铁尾矿配制人工土壤的实验研究[D].沈阳市:东北大学资源与土木工程学院,2018.
[4] ARNOLD W SCHUMANN, MALCOLME SUMNER.Formulation of environmentally soundwaste mixtures for land application[J].Water, Air, and Soil Pollution 2004, 152: 195-217.
[5] 康惊涛.粉煤灰与酒糟、污泥对土地复垦的可行性研究[D].泰安市:山东农业大学资源与环境学院,2004.
[6] 周学武,孙岱生,房建国,等.利用矿山固体废弃物(粉煤灰、淤泥及污泥)改良矿山退化土地及种植实验[J].资源矿产,2005,7(3):61-64.
[7] 樊霞.电厂CFB 脱硫灰在矸石山绿化中的应用[J].矿业天地,2008(23):975.
[8] 田积莹,黄义端,雍绍萍.黄土地区土壤物理性质及与黄土成因的关系[J].水土保持研究,1987,(01):1-12.
[9] 张小曳.有关中国黄土高原黄土物质的源区及其输送方式的再评述[J].第四纪研究,2007,27(2):181-186.
[10] 胡亚伟,孙若修,申明爽,等.晋西黄土区土地利用方式对土壤C:N:P 化学计量特征及土壤理化性质的影响[J].干旱区研究,2021,38(4):990-999.
[11] 周杨,杨永刚.不同重构方式下古交典型矿区土壤持水性差异研究[J/OL].山西大学学报(自然科学版), 2021(2021.07.01).https://kns.cnki.net/kcms/details/14.1105.N.20210701.0918.003.html.
[12] SCHUILING R D.Geochemical engineering: some thoughts on a new research field[J].Applied Geochemistry, 1990, 5:251-262.
[13] 吴传壁.地球化学工程学-21世纪的环保产业[J].物探与化探,2002,26(6):411-414.
[14] 王烨,王玉关.地球化学工程与环境保护[J].地质地球化学,2002,30(3):82-87.
[15] 杨忠芳,余涛,李敏,等.DZ T 0295-2016 土地质量地球化学评价规范[S].北京:地质出版社,2016.
-
计量
- 文章访问数: 21
- PDF下载数: 3
- 施引文献: 0
下载: