Results 11 to 20 of about 141 (111)
Shuitu Baochi Xuebao, 2023 为探讨化学改良剂对苏打盐碱土稻田生态系统中氟迁移的影响,采用盆栽试验,研究硫酸铝、脱硫石膏和有机复合改良剂作用下的土壤各形态氟含量变化,以及土壤氟向水体和地上部植株的迁移情况。结果表明,化学改良剂影响苏打盐碱土—水—作物系统中氟的迁移及生物有效性。种稻后各改良剂处理的土壤水溶态氟变化范围为8.33~20.90 mg/kg,与对照相比,均呈下降趋势,其中硫酸铝处理下降得最多,降低60.15%;可交换态氟和有机束缚态氟呈增加趋势,其中有机复合改良剂处理增加得最多,分别为79.54%和86.37 ...
郑玉昕 +7 more
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, 2018 油漆废渣(WPS)属于危险固体废物,目前主要以填埋和高温焚烧为主。从WPS的主要成分及特性角度,综述了国内外WPS脱水及多元化应用的研究进展,对其收集、储存及处理措施提出建议。由于WPS具有特殊的物理状态,高效脱水必须借助于专用设备。采用生化处理具有节能、环保优势,是WPS无害化处理与资源化利用的重要方向。WPS再生后可用于防腐涂料、橡胶、混凝土、建材等,对其应用条件与性能有待进一步研究。山东新泰市科技发展计划(201705);;山东建筑大学校企合作计划 ...
冯恩祺, 冯立明, 孙吉涛
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Study and Discussion on Preparation of Hemihydrate Gypsum by Salt Solution Method [PDF]
This is an article in the field of mineral materials. The utilization of desulfurized gypsum (FGD) to prepare more widely used hemihydrate gypsum plays a very important role in the resource utilization of industrial by-product gypsum.
Gaoxiang CHEN +4 more
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Shuitu Baochi Xuebao, 2023 为对比研究改良剂对河套灌区盐碱土入渗特性及水盐分布的影响,设置对照组及2种施用水平(1%和2%)下的2种改良剂(生物炭和脱硫石膏)共5组处理,进行室内土柱试验。结果表明:(1)相比于对照组,1%施用量的生物炭能使入渗时间延缓8.9%,抑制水分入渗,降低相同时间内的土壤累积入渗量,2%施用量的生物炭对水分入渗过程起到先抑制后促进的作用,能使入渗时间缩短35.6%,2种施用量的脱硫石膏都能使入渗时间缩短91.1%,促进水分入渗,提高相同时间内的累积入渗量;只有2%施用量的生物炭使最终的累积入渗量大幅增加62.
李淑芹 +6 more
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Impact of sludge blending on the air pollutant control devices in a coal-fired power plant [PDF]
Using coal-fired power plants for co-firing can achieve efficient consumption of sludge, and the existing Air Pollutant Control Devices (APCDs) in coal-fired power plants can effectively control the pollutants generated by sludge combustion. However, the
Enxian ZHANG +4 more
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Shuitu Baochi Xuebao, 2023 为探究生物和化学方法联用对黄河三角洲地区盐碱土的改良效果,首先进行粉煤灰的改性和土著耐盐菌的筛选,选取其中2株耐盐菌(BY-4、BY-8)与化学复合改良剂(改性粉煤灰+脱硫石膏+腐殖酸(FSZ))通过联合配施的方法开展室内土柱淋溶试验,研究渗滤液和土壤中盐基阳离子、可溶性有机碳(DOC)、土壤钠吸附比(SAR)以及土壤有机质等的变化规律。结果表明:BY-4和BY-8除具有明显的耐盐和产吲哚乙酸能力,还分别具有较高的溶磷与解钾能力;与对照(CK)处理相比,添加化学复合改良剂(FSZ)能显著促进水溶性Na ...
王悦 +8 more
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Effect of ultrafine process on microstructure and mechanical properties of sulphoaluminate cement grouting materials under high water-cement ratio [PDF]
In order to solve the problems of poor permeability and low early strength of mineral cement grouting materials, and effectively control the large deformation of surrounding rock in deep roadway, an early-strength superfine cement grouting material was ...
Guangming ZHAO +5 more
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Foundation and technology of coordinated utilization of bulk solid waste ‘Three modernizations’ in coal power base [PDF]
The construction of 14 large-scale coal bases and 89 demonstration bases for the comprehensive utilization of bulk solid waste in China marks that the utilization of bulk solid waste in mining areas has been incorporated into the national strategic ...
Denghong CHEN +8 more
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Shuitu Baochi Xuebao, 2005 通过室内培养及玉米盆栽土培模拟试验,采用完全随机区组设计,研究了在山西省大同市山阴县西盐池的苏打碱土上,施用DS-1997、脱硫石膏、风化煤对土壤速效磷含量的影响。研究结果表明:(1)3种改良剂均可降低苏打碱土的pH值;(2)脱硫石膏改良苏打碱土的作用最明显地反映于土壤水溶性盐分的急剧上升,同时伴随着土壤中速效磷含量的急剧下降,因此,脱硫石膏抑制土壤中磷的有效化作用;(3)DS-1997与其他两种改良剂相比,可以更好地增强土壤解磷细菌和碱性磷酸酶活性,增强土壤中磷的释放作用。
李晓娜 张强 陈明昌 章衡
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Study on ground failures and subsidence due to existing underground cavities and countermeasures [PDF]
, 2007 制度:新 ; 文部省報告番号:乙2078号 ; 学位の種類:博士(工学) ; 授与年月日:2007/3/1 ; 早大学位記番号 ...
坂本 昭夫
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