Compound contamination and secondary ecological effects of Cd and As in soil-alfalfa ecosystems

ＣｏｍｐｏｕｎｄｃｏｎｔａｍｉｎａｔｉｏｎａｎｄｓｅｃｏｎｄａｒｙｅｃｏｌｏｇｉｃａｌｅｆｆｅｃｔｓｏｆＣｄａｎｄＡｓｉｎｓｏｉｌ－ａｌｆａｌｆａｅｃｏｓｙｓｔｅｍｓ（ＺｈｏｕＱｉｘｉｎｇ；ＧａｏＺｈｅｎｇｍｉｎ）（ＩｎｓｔｉｔｕｔｅｏｆＡｐｐｌｉｅ...     

浙江墩头盆地横山组孢粉化石的发现及其地层意义

浙江墩头盆地红色岩层中上部首获丰富的以Cassopllis为主(58.39—62.54％)伴有Exesipollenites(15.21—15.84％),Hsuisporites(0.56—0.62％),Cicatricosisporites(0—0.31％)等孢粉化石。该孢粉组合特征既与国内外晚侏罗世孢粉组合面貌差别较大,又与早白垩世中晚期孢粉组合面貌存在明显差异,显示了早白垩世早期孢粉组合的色彩。笔者认为这套红色岩层应归早白垩世早期横山组为宜。     

示波极谱法测定地面水中的钒

应用钒（ Ｖ） ５ Ｂｒ Ｐ Ａ Ｄ Ａ Ｐ Ｈ２ Ｏ２ 体 系产生的 络合极 谱波对地 面水中 的钒 进行 了测 定，并 讨论了测试 条件。钒 浓度在 ００１ ～２２５ μｇ／２５ ｍ Ｌ 范围 内极谱 电流与钒 含量呈线 性关系 ，本法具有 较高的选择 性和灵 敏度，测定 地面水 中的钒结 果令人 满意     

前屯煤矿矿井水处理作饮用水的技术实践

本文根据前屯煤矿矿井水排放规律和原水水质特征，采用ＫＪＳ型一体化净水器，锰砂除铁滤器及消毒等处理工艺，处理后水质完全达到国家饮用水标准，工程投资和运行费用均较合理。     

Detection of polycyclic aromatic hydrocarbons using a high performance-single particle aerosol mass spectrometer

The real-time detection of the mixing states of polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs in ambient particles is of great significance for analyzing the source, aging process, and health effects of PAHs and nitro-PAHs; yet there is still few effective technology to achieve this type of detection. In this study, 11 types of PAH and nitro-PAH standard samples were analyzed using a high performance-single particle aerosol mass spectrometer (HP-SPAMS) in lab studies. The identification principles ‘parent ions’ and ‘mass-to-charge (m/z) = 77’ of each compound were obtained in this study. It was found that different laser energies did not affect the identification of the parent ions. The comparative experiments of ambient atmospheric particles, cooking and biomass burning emitted particles with and without the addition of PAHs were conducted and ruled out the interferences from primary and secondary organics on the identification of PAHs. Besides, the reliability of the characteristic ions extraction method was evaluated through the comparative study of similarity algorithm and deep learning algorithm. In addition, the real PAH-containing particles from vehicle exhaust emissions and ambient particles were also analyzed. This study improves the ability of single particle mass spectrometry technology to detect PAHs and nitro-PAHs, and HP-SPAMS was superior to SPAMS for detecting single particles containing PAHs and nitro-PAHs. This study provides support for subsequent ambient observations to identify the characteristic spectrum of single particles containing PAHs and nitro-PAHs.     

超声波降解水溶液中叔丁醇的研究

研究了超声场降解水溶液中叔丁醇的行为，并探讨了反应动力学模式。实验表明．在本实验条件下超声波降解叔丁醇能够达到较好的降解效果。叔丁醇的去除率随着超声辐射时间的延长而提高，在频率为20kHz、功率为1500W的超声场下，作用80min能够达到90％左右的去除率。反映体系的降解速率随着反应温度的提高而升高，随着初始浓度的增大而降低：反应体系的pH值对叔丁醇的降解率影响不大：溶液中溶解气体的种类对降解效果有一定影响。反应速率常数按照由快到慢的顺序为ko2〉k未作处理〉kN2。在一定的初始浓度条件下，超声波降解叔丁醇的反应符合假一级反应动力学模式。     

氟苯胺好氧生物降解性能的研究

利用驯化污泥研究了邻氟苯胺、对氟苯胺、2,4-二氟苯胺的好氧生物降解性能.结果表明,3种氟苯胺的好氧生物降解性能从高到低依次为对氟苯胺、邻氟苯胺和2,4-二氟苯胺.降解动力学分析表明,除2,4-二氟苯胺在实验质量浓度8.56 mg/L时为一级反应,其他为零级反应;且它们的降解规律都符合Monod方程;30 ℃、振荡速率140 r/min为氟苯胺的最佳降解条件.同时研究了共基质条件下葡萄糖和苯胺对2,4-二氟苯胺的好氧降解的影响,葡萄糖的引入有促进作用,而苯胺只在一定浓度范围内有促进作用.氟苯胺的生产废水与生活污水合并处理以及多种组分混合废水处理是可行的.     

生物化学协同除磷研究

采用聚合硅酸铝和聚合硅酸铁两种混凝剂,比较了将混凝剂直接投加到反应器中和对生物反应器出水再进行混凝沉淀2种工艺的除磷效果,并对2种混凝剂的除磷效果进行了比较.结果表明:对于聚合硅酸铝,没有生物协同作用;对于聚合硅酸铁,投加量在40 mg/L以下时具有生物协同作用,30 mg/L时协同作用最明显;而且聚合硅酸铁的除磷效果好于聚合硅酸铝.     

纤维球-砂直接过滤积泥形态学的研究

本文主要研究了纤维球-砂直接过滤的积泥形态,它包括宏观和微观形态以及积泥和剩余积泥的形成过程。     

Synergistic effects of liquid and gas phase discharges using pulsed high voltage for dyes degradation in the presence of oxygen

The technology of combined liquid and gas phase discharges (LGD) using pulsed high voltage for dyes degradation was developed in this study. Apparent synergistic effects for Acid orange II (AO) degradation in the presence of oxygen were observed. The enhancement of AO degradation rate was around 302%. Furthermore, higher energy efficiency was obtained comparing with individual liquid phase discharge (LD) or gas phase discharge process (GD). The AO degradation in the presence of oxygen by LGD proceeded through the direct ozone oxidation and the ozone decomposition induced by LD. Important operating parameters such as electrode distance, applied voltage, pulse repetition rate, and types of dyes were further investigated.