Results 21 to 30 of about 141 (111)
Mining technology and practice of full-solid waste cemented backfilling in narrow strip of extra-thick coal seam under buildings [PDF]
There is a great amount of coal pressed under buildings in our country, while the discharge of coal-based industrial solid wastes such as coal gangue and fly ash are increasing, which has severely restricted the local economic and social development ...
Chen SU +6 more
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Shuitu Baochi Xuebao, 2017 为了解连续施用脱硫石膏改良苏打盐化土的持续效应及环境效应，以经过3 a大田连续施用不同量脱硫石膏（0，15，22.5，30 t/hm2）改良的重度苏打盐化土为供试土壤，采用盆栽试验方法，研究2 a盆栽试验后，脱硫石膏的持续效应对饲草玉米生长、土壤环境以及农作物中重金属累积的影响。结果表明：15 t/hm2用量的脱硫石膏可以显著提高饲草玉米的出苗率、株高、茎粗和生物量，较对照分别提高20.6%，16.8%，8.1%和10.1%，试验范围内改良效果最佳。脱硫石膏使土壤的pH、EC降低，Na+减少，Ca2 ...
唐, 黄高鉴
doaj
A key technology for synergistic backfilling of coal-based solid waste and high-salinity wastewater [PDF]
Background and Objective Limited by locations, as well as economic and technical levels, most of the coal-based solid waste is still accumulated in the form of open-air landfills without treatment, thus occupying large quantities of land resources and ...
Boqiang WU +9 more
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Mechanical properties and permeability characteristics of mudstone-slag-based water barrier material [PDF]
To investigate the influence of mudstone content and curing age on the mechanical properties and permeability characteristics of mudstone-slag-based water barrier materials, using waste sandstone from open pit coal mine stripping was used as aggregate ...
Jiangsen ZHU +6 more
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Shuitu Baochi Xuebao, 2017 以玉米为研究对象，在盆栽条件下，探究脱硫石膏、蚯蚓粪、硫磺、糠醛渣、沸石对土壤改良的效果，并据此设计改良剂配施组合，研究不同改良剂配施组合对玉米生长发育及土壤性状的改良作用。结果表明：在0—20 cm土层中，脱硫石膏、硫磺、糠醛渣、蚯蚓粪、沸石处理的土壤pH值均有不同程度的降低，轻度盐碱条件下降低了0.05～0.19个单位；中度盐碱条件下降低了0.20～0.33个单位。脱硫石膏可显著降低0—20 cm土层水溶性Na+含量。根据不同改良剂的改良特点，设计了T1（脱硫石膏+硫磺+蚯蚓粪）和T2（蚯蚓粪+沸石+
卢星辰 +7 more
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中国における資源再生利用の環境影響の定量評価に関する研究 : 古紙と廃プラスチックを事例として [PDF]
, 2016 名古屋大学Nagoya University博士(国際開発学)doctoral ...
65307, 65308, LU, Xi, 魯, 希
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Shuitu Baochi Xuebao, 2017 为定量描述脱硫石膏施用下盐化碱土土壤剖面盐分与淋洗水量的关系，通过室内土柱淋洗试验开展了脱硫石膏施用下不同淋洗水量对宁夏盐化碱土水盐运移影响的研究。结果表明：施用脱硫石膏对增加水分入渗和降低0—20 cm土层土壤pH、盐分含量产生了积极影响，土壤脱盐率在84.39%~95.41%之间，但较大水量的淋洗有可能会加剧土壤碱化。连续淋洗条件下，最大脱盐深度位于60—80 cm土层。脱硫石膏施用下，0—20 cm土层Cl-、Na+溶脱率随淋洗水量的增加变化不大，低淋洗水量下，SO42-溶脱率低于Na+和Cl ...
樊丽琴 +3 more
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Review of comprehensive utilization of typical ferroalloy slags [PDF]
, 2020 Three typical ferroalloy slags, namely, silicon–manganese, nickel–iron, and chrome–iron slags, are produced in large quantities as by-products. This is because they are not efficiently utilized, which creates lots of pressure on environmental capacity ...
Fang-qin CHENG +6 more
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Shuitu Baochi Xuebao, 2019 为了评价不同改良剂对盐渍化土壤的改良效果，以葵花为研究对象，采用大田裂区试验方法，设置生物炭（DC，22.5 t/hm2）、脱硫石膏（DS，37.5 t/hm2）、脱硫石膏加有机肥（DSF，各37.5 t/hm2）、对照（DCK）4种处理。结果表明：施加改良剂均降低了土壤容重，增加了土壤孔隙度，生物炭效果最明显，在耕层（0-20 cm）收获后较播种前土壤容重降低6.11%，是DCK的4倍，孔隙度增加12.89%，是DCK的5倍；脱硫石膏降低土壤pH和电导率效果最优，最大降幅分别为10.09%和28.51%
胡敏 +6 more
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安定処理土における凍結融解に対する抵抗性と微視的構造について [PDF]
, 1984 金沢大学理工研究域環境デザイン学系In the regions of the cold weather, the deterioration of the subbase in roads by freezing-thawing action is often observed. Although the durability of stabilized soils is considered to be important, the evaluation of the resistibility of
Hasaba Shigemasa +7 more
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