太阳能光催化降解法去除水中罗丹明染料的研究

在太阳光的紫外线辐射下，应用载有ＴｉＯ２薄层的平板式光催化反应器，进行了光催化降解法去除水中罗丹明染料的试验，结果表明，当紫外线辐射强度平均为３３Ｗ／ｍ＾２，反应时间为１８ｍｉｎ时，水中罗丹明染料浓度由１０ｍｇ／Ｌ降至０．０１ｍｇ／Ｌ，在室国家排放标准，探讨了太阳能光催化反应系统的改进方向及工业化应用的有关问题。     

印染废水铁碳微电解深度处理出水生物毒性

实验利用铁碳微电解对印染废水二级生化出水进行深度处理研究,结果表明,该工艺可使COD从120 mg/L降至60 mg/L以下,达到《城镇污水处理厂污染物排放标准》(GB 18918-2002)一级B排放标准。通过微生物生长曲线、乳酸脱氢酶(LDH)释放、活性氧物质(ROS)产生水平等检测手段,对比深度处理前后废水的生物毒性。结果表明:印染废水经深度处理后对大肠杆菌的生长抑制明显减弱;进水导致大肠杆菌的LDH释放量和ROS产生水平分别为空白的2.4和28.9倍,深度处理后分别下降至1.8和6.9倍;另外,毒性较大的双酚A和2,4-二氨基甲苯在深度处理过程被降解。可知,铁碳微电解具有毒性削减作用。然而,出水中含有的某些污染物使其仍表现出一定的生物毒性。     

The influence on carbon,nitrogen recycling,and greenhouse gas emissions under different C/N ratios by black soldier fly

Environmental Science and Pollution Research - Currently, sustainable utilization, including recycling and valorization, is becoming increasingly popular in waste management. Black soldier fly...     

Novel visible-light-driven SrCoO3/Ag3PO4 heterojunction with enhanced photocatalytic performance for tetracycline degradation

Environmental Science and Pollution Research - The semiconductor photocatalytic technology has been considerably studied due to its excellent catalytic performance in water pollution control....     

有机粘土矿物对水中低浓度菲的吸附性能和机理

分别选用十六烷三甲基溴化铵(HDTMA-Br)、四甲基溴化铵(TMA-Br)、聚乙二醇(PEG)表面活性剂改性天然粘土矿物,研究其对水中低浓度多环芳烃类难降解有机物菲的吸附性能和机理,并讨论了有机粘土的用量对吸附菲的性能的影响,验证了有机粘土矿物吸附菲后的稳定性.3种有机粘土矿物对菲的吸附等温线均呈中凹型,表现为分配系数(Kp)逐渐增大,表明吸附是分配作用和溶剂化效应共同作用的结果.根据Kp及土样有机碳含量(foc)所得的经有机碳归一化的分配系数(Koc)基本为常数,远远高于天然土壤/沉积物的Koc.在相同实验条件下,3种有机粘土矿物中HDTMA改性粘土矿物对菲的吸附性能最强,PEG改性粘土矿物次之,TMA改性粘土矿物最差.     

"3S"在森林病虫害预警中的应用与展望

对“3S”技术在森林病虫害预警中的应用现状、作用进行了分析．运用3S技术,结合森林病虫害发生的特点,对可能引发的各种森林病虫害可以进行预警,指出了实现森林病虫害预警应解决的问题及应用前景。     

地震序列的h值快速震型判别与强余震预测

用数值拟合的方法对１９６６年以来７６个ＭＬ≥５．５地震序列的衰减特性进行了较详细的研究，提出从ｈ值的逐日时间扫描和逐日累积时间扫描两个方面去把握地震序列的衰减过程并将其用于强余震（含双震）的预测和震型的快速判定。     

Effects of high temperature on larval development and metamorphosis of Arachnoides placenta (Echinodermata: Echinoidea)

Adults of the sea urchin Arachnoides placenta (L.) were induced to spawn, and eggs were fertilized at 28°C in September 1989. After 5 min, eggs were transferred to 28, 31, 34, or 37°C and reared to metamorphosis. Embryos were observed at 20-min intervals during the first 2 h; larvae were observed daily. The cleavage was higher at higher temperatures. Embryos reared at 28°C were still at the 4th cleavage (16-cell stage) after 100 min, while those at 34°C had reached the 5th cleavage (32-cell stage). All embryos reared at 37°C died on the second day. Incidence of abnormality was 20 to 30% at 28 and 31°C, 48% at 34°C, and 77% at 37°C. The 8-arm stage was reached after 4 d at 28°C, 3 d at 31°C and 2 d at 34°C. Larvae displayed decreasing body length and arm length with increasing temperature. Larvae at 31°C have relatively long arms, as a result of a decrease in body length, not because of increased arm length. Incidence of metamorphosis was 43.9±1.7% (mean/plusmn;SD) at 28°C, 24.5±1.9% at 31°C, and 5.3% at 34°C. The size of metamorphosed juveniles was significantly larger at 28°C than at 31 and 34°C. Temperatures of 31°C negatively affect larvae and juveniles of the sand dollar.     

提高化学需氧量质控合格率的研究

大庆油田化工总厂废水中化学需氧量（COD）的测定采用库仑法。为了提高质控合格率，从人员素质、仪器设备、电级内液等9个方面分析寻找导致误差的主要影响因素并制定对策。同时对影响电极内液及消解的因素进行正交实验确定最佳条件。结果使库仑法质控合格率由90％提高到95％，测定38次标样全部合格。     

稠油污水处理系统改造与絮凝剂筛选试验研究

河南油田井楼稠油联合站含油污水中的污油和悬浮物含量较高,超过150mg/L。为此,对该处理系统进行了改造,并对絮凝剂的筛选进行了试验。结果表明:无机絮凝剂与有机絮凝剂联合作用,可对污水中所含有的污油和有机物杂质的悬浮物产生很好的絮凝沉降效果。加药浓度、加药顺序及沉降时间均对絮凝沉降效果有一定的影响。改造后的污水处理系统实现了污水达标回注,降低了无效回注费用。同时还回收了污油,降低了药剂成本,产生了十分明显的经济效益,每年节约成本约500万元。