Results 1 to 10 of about 10,640 (101)
Gongye shui chuli, 2011 通过单因子试验考察了进水pH、预氧化时间及原水本底成分对高锰酸钾、高锰酸盐复合药剂(PPC)预氧化去除受污染地下水中铁、锰效果的影响。试验结果表明,在使用KMnO4及PPC预氧化时,进水无需调节pH便能取得较好的铁、锰去除效果;综合技术经济因素考虑,PPC及KMnO4的预氧化时间应定为10 min;原水本底成分极大地影响着PPC的预氧化效果,而KMnO4预氧化受此影响略小;在原水含有某些还原性有机物的情况下投加PPC预氧化更为合理,反之,则应投加KMnO4药剂。
胡文华, 吴慧芳, 孙士权
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Gongye shui chuli, 2016 采用FeCl3预氧化-Fenton试剂氧化-Ca（OH）2中和技术处理草甘膦废水，研究了FeCl3投加量、H2O2投加量、预氧化-氧化时间及温度、中和pH等因素对草甘膦废水中甲醛、COD去除率的影响。结果表明，预氧化-氧化反应条件对甲醛去除率的影响较大，氧化-中和反应条件对COD去除率的影响较大。在最佳反应条件下，废水中甲醛的去除率可接近100%，COD去除率达到87%，处理出水达到《石油化工水污染物排放标准》（GB 4281-1984）的要求。
李祥 +4 more
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Gongye shui chuli, 2014 饮用水的预臭氧化技术近年来倍受关注，臭氧预氧化技术的功效有很多，但是目前人们比较关注的是其对饮用水消毒副产物的控制，笔者综述了近几年国内外的研究结果，总结了预臭氧化工艺控制饮用水消毒副产物的机理，也指出了目前预臭氧化技术存在的不足并为以后的研究工作提出了建议和展望。
李多 +5 more
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World Water Policy, Volume 12, Issue 4, November 2026.ABSTRACT Biochemical oxygen demand (BOD) remains a core indicator of organic pollution in freshwater monitoring, but its role in water policy and practice is changing as water‐quality assessment moves toward predictive, integrative, and decision‐support approaches.
Isadora Favero Roque Cenci +5 more
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Gongye shui chuli, 2003 采用高铁酸盐对湖泊、水库水进行预氧化、絮凝除藻, 对其除藻的影响因素及其与预氯化除藻效果进行了对比。结果表明, 采用高铁酸盐预氧化, 投加0.14mg/L就能明显提高聚合铝对含藻类水混凝的除藻率。1.4mg/L高铁酸盐预氧化与20mg/L聚合铝联用的除藻率是单纯投加40mg/L聚合铝的3倍;水样pH对含藻类水处理的影响, 除藻率pH5.0＞ pH7.5＞pH10;延长高铁酸盐预氧化时间, 除藻率稍有增加, 但超过10min, 对除藻率影响不大;腐殖酸的存在会明显阻碍聚合铝的除藻效果 ...
梁好 +4 more
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Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Improving the efficiency and stability of oxygen evolution electrocatalysts remains essential for advancing water splitting technologies. Although in situ surface reconstruction into active phases is desirable, it often leads to uncontrolled structural degradation.
Beirong Ye +11 more
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Magnesium hydride (MgH2) is a promising solid‐state hydrogen storage material due to its high gravimetric capacity and excellent reversibility. However, its practical application is hindered by high thermodynamic stability and sluggish reaction kinetics.
Xingyang Chen +6 more
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Multi‐gradient warming reshapes functional traits and adaptive responses of alpine meadow plants
Functional Ecology, Volume 40, Issue 9, Page 2889-2905, September 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Plant functional traits in alpine meadows are critical indicators of ecosystem responses to climate warming, yet dynamic changes in trait networks across warming gradients and their consequences for community functions remain poorly understood.
Zhiwei Yan +6 more
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Gongye shui chuli, 2014 以匀浆破解为预处理，考察了其结合臭氧氧化对污泥破解效果的影响。结果表明：在污泥浓度20.912 g/L、转速6 000 r/min下匀浆破解2 h，污泥MLSS减少率达到36.9%；先调pH后匀浆破解+臭氧氧化的污泥破解效果优于匀浆破解后调相同pH下+臭氧氧化，同时污泥MLSS减少率随pH的升高递增；在臭氧投加量0.15 g/g下，pH=13匀浆预处理结合臭氧氧化破解污泥MLSS减少率达到58.3%，较无匀浆破解预处理直接臭氧氧化破解提高36.7%。
张栋良 +3 more
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Rare Metals, Volume 45, Issue 8, August 2026.ABSTRACT The regeneration of osteoporotic bone defects is severely hampered by compromised endogenous healing capacity, demanding advanced strategies that actively orchestrate pro‐osteogenic microenvironments. Here, we report an integrated, self‐powered osteo‐regenerative system that uniquely leverages a dual ultrasound‐responsive piezoelectric ...
Bing Tan +6 more
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