陶瓷碎片基质人工湿地处理污染河水的应用

选取陶瓷碎片废弃物作为基质,芦苇和菖蒲作为湿地植物,构建潜流人工湿地系统,对城市纳污河道内的污染河水进行处理。水力负荷为15cm/d,考察了在较高浓度进水(CODCr和氨氮浓度分别为40~70mg/L和10~35mg/L)和较低浓度进水(CODCr和氨氮浓度分别为15~30mg/L和0.3~3mg/L)2种工况下系统的运行效果。结果表明,在较高浓度进水情况下,系统对CODCr、氨氮的平均去除率分别为10.0%和42.4%;在较低浓度进水情况下,系统对CODCr、氨氮的平均去除率分别为38.5%和63.0%。陶瓷碎片是一种经济有效的湿地基质。     

上海市屋面雨水回用处理技术研究

在分析上海市屋面雨水水质的基础上,研究了沉淀和过滤技术对屋面雨水的回用处理效果。结果表明,经过沉淀、过滤处理后,屋面雨水满足城市生活杂用水和景观用水的水质标准。     

精对苯二甲酸残渣的处理现状及综合利用

综述了国内外精对苯二甲酸（PTA）生产企业的残渣处理概况和残渣中有价物质的回收方法：提出了PTA残渣的控制和综合利用思路，分析了PTA残渣综合利用的经济效益。     

抚顺市环境噪声现状及控制对策

本文以抚顺市1996年2005年的噪声监测资料为依据，分析了抚顺市的环境噪声污染现状、特征，指出存在的主要问题是：社会生活噪声突出、交通噪声污染显著。并据此探索合理的防治措施——噪声控制规划纳入城市发展规划及强化城市环境噪声管理。     

Distribution and source analysis of aluminum in rivers near Xi’an City, China

To study the status and source of aluminum (Al) contamination, a total of 21 sampling sites along six rivers near Xi’an City (Shaanxi province, China) were investigated during 2008–2010. The results indicated that the average concentration of total Al (Al_t) in the six rivers increased by 1.6 times from 2008 to 2010. The spatial distribution of Al_t concentrations in the rivers near Xi’an City was significantly different, ranged from 367 μg/L (Bahe River) to 1,978 μg/L (Taiping River). The Al_t concentration was highest near an industrial area for pulp and paper-making (2,773 μg/L), where the Al level greatly exceeded the water quality criteria of both the USA (Criterion Continuous Concentration, 87 μg/L) and Canada (100 μg/L). The average concentration of inorganic monometric aluminum (Al_im) was 72 μg/L which would pose threats to fishes and other aquatic lives in the rivers. The concentrations of exchangeable Al (Al_ex) in the sediment of the Taiping River sampled were relatively high, making it to be an alternative explanation of increasing Al concentrations in the rivers near Xi’an City. Furthermore, an increasing Al level has been detected in the upstream watershed near Xi’an City in recent years, which might indicate another notable pollution source of Al.     

南京市冬季大气颗粒态汞的分布特征

采集了南京市2012年冬季4个功能区的PM2．5、PM10、TSP样品,对不同粒径大气颗粒物中的颗粒态汞测试。结果表明,南京冬季大气颗粒物TSP中汞的质量浓度为49．26 pg/m3～257．14 pg/m3,平均质量浓度为161．27 pg/m3;PM10中汞的质量浓度为44．82 pg/m3～228．29 pg/m3,平均质量浓度为147．38 pg/m3;PM2．5中汞的质量浓度为35．98 pg/m3～178．58 pg/m3,平均质量浓度为104．10 pg/m3。不同功能区大气颗粒态汞质量浓度的分布趋势为：交通综合区＞旅游区＞住宿综合区＞商业区。大气颗粒态汞60％以上存在于可吸入肺的PM2．5中,细颗粒物富集汞的能力比粗颗粒物强。     

牛仔布浆染污水处理工程实践

通过实例阐述了采用混凝气浮 厌氧 接触氧化工艺处理牛仔布浆染污水的工艺流程、工艺论述、技术参数及在运行中遇到的问题 ,并得出了采用该工艺处理牛仔布浆染污水可取得良好的效果     

工程建设过程中人为失误的原因分析及预防探讨

分析了工程建设过程中常见的人为失误,以及人为失误产生的根源,从技术和管理两方面探讨了人为失误的预防和控制措施,以期达到有效管控事件发生,确保工程建设过程安全的目的.     

Analysis on sensitivit and landscape ecological spatial structure of site resources

This article establishes a set of indicators and standards for landscape ecological sensitivity analysis of site resources by using the theories and approaches of landscape ecology.It uses landscape diversity index(H),evenness(E),natural degree(N),contrast degree(C) to study spatial structure and landscape heterogeneity of site resources and thus provides a qualitative-quantitative evaluation method for land planning and management of small ,medium scale areas.The analysis of Yantian District,Shenzhen of China showed that Wutong Mountain belonged to high lanscape ecological sensitivity area,Sanzhoutian Reservoir and Shangping Reservoir were medium landscape sensitivity area and high ecological sensitivity area;Dameisha and Xiaomeisha belonged to medium sensitivity area caused by the decline of natural ecological areas.Shatoujiao,Yantian Pier belonged to low sensitivity area but urban landscape ecological development had reshaped and influenced their landscape ecological roles in a great extent.Suggestions on planning,protection goals an development intensity of each site or district were raised.     

Estimation of bioaccessibility and potential human health risk of mercury in Chinese patent medicines

Mercury(Hg), mainly in cinnabar species, has been used in medicine for thousands of years in China, and worldwide concern has been raised on its toxicity. In this work, the amount of bioaccessible mercury in 16 Chinese patent medicines(CPMs) was measured by using an in vitro simulated digestion system, consisting of simulated gastric and intestinal fluid, to investigate the bioavailability of mercury in CPMs and evaluate its potential risk to human health. Total mercury and mercury in the gastrointestinal extracts were measured by inductively coupled plasma mass spectrometry(ICP-MS). The levels of total Hg in 16 CPMs ranged from not detected to 11.89 mg/g, with a mean value of 1.13 mg/g, while the extractable Hg ranged from not detected to 4.37 μg/g, with a mean value of 0.42 μg/g.Mercury bioaccessibility varied significantly in the investigated CPMs, depending on the ingredient. Compared to the CPMs without cinnabar(2.5%–30.9%), the percentage of mercury in the gastrointestinal supernatants for CPMs with cinnabar was quite a bit lower(0.037%). By comparing with the Food and Agricultural Organization/World Health Organization Joint Expert Committee on Food Additives(FAO/WHO) safety guideline, the average daily intake dose(ADD) of Hg in the medicines was then calculated to access the risk of mercury to human health from taking CPMs.