钙法处理高浓度含磷废水

介绍了钙法处理高浓度合磷废水的研究结果，其关键控制技术有pH值、最适表面负荷、沉淀时间及反应、混合强度等。在进水磷酸盐为60—80mg/L时，出水磷酸盐浓度＜0．5mg/L，去除率为99．7％-99．9％。该技术适用于高浓度含磷废水和城市污水厂的深度处理。     

高浓度活性污泥法的后续试验研究

高浓度活性污泥法采用兼氧、好氧组合流程,最显著的特点是全流程活性污泥浓度高和好氧前段的溶解氧浓度低。显著的同步硝化反硝化使该工艺可以在相当短的水力停留时间和较低的总回流比条件下,达到极高的总氮去除效果,同时相当有效地去除总磷和其他污染物。在原中试结束一年后又开展了后续试验,不仅重现了当时高浓度活性污泥法的优异处理效果,而且其脱氮除磷效果进一步提高。     

多段活性污泥法处理高浓度中药废水

采用多段活性污泥法处理高浓度中药废水。运行结果表明，尽管进水有机物浓度很高，但该工艺运行稳定，对COD和BOD，的去除率均超过99％，出水水质达到《污水综合排放标准》（GB8978-1996）的一级标准。     

光合细菌法处理高浓度有机废水工艺探讨

介绍了光合细菌的能量与物质代谢过程,并在此基础上探讨了光合细菌应用于废水处理时工艺条件的选择与控制。由于光合细菌能高效利用废水中的低分子脂肪酸、醇并具有多种代谢途径,因此在高浓度有机废水的处理中具有很大的优势。     

湿式氧化法处理高浓度难降解有机废水

工业废水中高浓度难降解水的治理是一大难题,湿式氧化法是近年来发展起来的新型处理技术,本文列举了该技术合理含酚废水,农药废水及染料废水的研究近况,初步探讨其作用机理以及湿式氧化技术处理高浓度降解有机废水的研究及应用前景。     

电化学法预处理高浓度农药废水的试验研究

针对生产除草剂及其相关化工中间体产品的某农药厂生产废水COD值高、生物毒性大的特点,开展了电化学法去除废水中难生物降解污染物的预处理研究,分析了电化学法的预处理效果及其影响因素.结果表明,电解法对COD的去除率较低,而铁炭微电解法的预处理效果较好且操作简单,在pH值为8.3、铁炭比为300：200、停留时间为132 h,采用较高的固水比并进行曝气的条件下,对COD的去除率可达60.52%,为后续处理创造了有利条件,并实现了以废治废.     

二段法改良工艺处理高浓度难降解污水

椒江的城市污水中高浓度难降解化工废水约占52%,处理难度较大。通过动态试验摸索出两段法改良工艺并应用于工程设计中,经过近两年的运行,取得了良好的效果。该工艺在进水水质波动较大的情况下,出水水质基本能够达标,具有运行灵活、缓冲能力强、污染物去除率高的优点。     

高浓度活性污泥法处理印染废水为主的城镇污水

新市镇污水处理厂是以印染废水为主的城镇污水处理厂,在长三角地区具有一定的代表性,COD去除是其难点。在该污水处理厂开展了提标改造小试,历时3月有余,结果表明,通过适当延长现有MSBR的沉淀时间,系统可以稳定维持高浓度活性污泥,从而显著提高其去除COD的能力;若再辅以深度处理设施,可以保证出水水质达到一级A标准要求。     

物化生化法处理高浓度农药废水的试验研究

采用由中和沉淀过滤与吸附组成的物化处理法以及由缺氧生物酸化与生物接触氧化组成的生化处理法对高浓度农药废水进行试验研究。试验表明,物化阶段对主的ＣＯＤ、悬浮物,总氮与苯胺的去除率分别高达８０－８５％,９９．４％－９９．９％、８６．６－８７．３％与９２．５－９６．３％;后续生化阶段对ＣＯＤ、总氮与苯胺的去除率分别高达９３．４％－９３．５％,９２．４％－９３．５％和９５．６－９６．７％,最终出水中主要污     

Microbiological polyphasic approach for soil health evaluation in an Italian polluted site

The use of microorganisms as bioindicators of soil health is quite a new feature, rarely considered for the soil health evaluation in chronically-polluted industrial sites, and still suffering of the bias related to the technique applied.In this work we applied a microbiological polyphasic approach, relying on soil indigenous microorganisms as bioindicators and combining culture-dependent and -independent methods, in order to evaluate soil health of four sites (1a, 1b, 2a and 2b) inside a chemical factory with a centenary activity. Functional as well as structural aspects were comprehensively considered. Results were related to the kind of pollutants found in each site.Heavy metal pollution was recorded in sites 1b and 2b, while both organic and inorganic substances were detected in sites 1a and 2a. Based on the chemical and physical properties of the four soils, site 1b and 2b grouped together, while 1a and 2a were separated from the others.The density of the culturable bacteria was very low in site 2a, where only Gram-positive were found. According to the identification of culturable bacteria, site 2a showed the lowest similarity with the other sites. Microbial activity was detected only in sites 1b and 2b. PCR-DGGE (Denaturing Gradient Gel Electrophoresis), was performed on the culturable, total and active microbial communities. Consistently with the identification of culturable bacterial strains, the molecular profile of the culturable fraction of site 2a, was clearly separated from the molecular profiles of other sites in cluster analysis. Molecular fingerprintings of the whole and active bacterial communities differed among the sites, but clustered according to the pollutants present in each site. The presence of possible key species in each site has been discussed according to the whole and active species.Since the results obtained by microbiological analysis are consistent with the chemical data, we suggest that the use of this microbiological polyphasic approach and of microorganisms as intrinsic bioindicators, can be suitable for the evaluation of soil health.     

徐工WD500型稳定土厂拌设备

稳定土厂拌设备是路面机械的主要机种之一，是专用于拌制各种以水硬性材料为结合剂的稳定混合料的搅拌机组。具有材料级配准确、拌和均匀、节省材料等优点，因而广泛用于高等级公路和城市道路的基层、底基层施工，也适用于其它货场、停车场、机场等需要稳定材料的工程。     

双轮铣深层搅拌水泥土地下连续墙(CSM工法)应用探讨

双轮铣深层搅拌技术是国际上最新研发的一种水泥土深层搅拌工艺,现已在国外多个领域(如:基坑工程、防渗工程、地基处理等)均得到广泛应用。为提高国内相应工艺技术水平并弥补相关领域空白,需要对该工艺做深入的探讨和研究。文中通过对CSM工艺概况、工艺流程等的介绍,结合国内外工程案例和应用情况,归纳总结了CSM工法的特点和优势,为国内在该领域的进一步研究工作提供参考。     

地铁施工污染土防护处理技术

针对北京地铁7号线百子湾—化工站区间存在污染土问题进行了污染特性分析,从防护方案选择、过程通风、人员防护和污染土外运处置等几个方面提出了详细的方案,并通过污染土环境污染监测控制,取得了良好的效果,有效的保证了环保施工环境和人员的安全。     

提高连续式稳定土搅拌站使用效率的措施

介绍了对连续式稳定土搅拌设备的3项改进。即主拌缸的清洗方式改进；料斗过滤网在槽钢骨架内安装激磁元件，避免钢筋头、铁钉等划分损坏输料皮带，减轻主拌缸辅件的磨损；供水系统实现了供水自动化改进。     

浅谈二灰土掺拌法施工工艺

着重介绍了二灰土掺拌法的施工工艺以及质量控制要点，通过与路拌法的施工效果对比，指出掺拌法施工拌和均匀，节省机械费和场地费，应用前景广阔。     

WB400铣拌两用稳定土拌和机

WB400铣拌两用稳定土拌和机是陕西建设机械股份有限公司采用现代工业设计方法，将产品的使用功能与人机工程学及企业文化融汇在一起，有自主知识产权的高品质产品。该机配置铣拌两用转子，用于碎石及沥青等旧路面的再生破碎与拌和，同时可用于拌和Ⅰ，Ⅱ级土壤及石灰、水泥、煤渣灰，废钢渣等     

导热油系统在沥青搅拌设备中的组成及工艺

导热油作为一种优良的传热介质，具有良好的热稳定性、抗氧化性、高温、低压的传热特点，有较大的导热系数和较高的热容量，传热效率较高，凝固点低、粘度低，有明显的节能效果，在中温(250～320℃)范围内有比较明显的优点。     

The contribution of glomalin-related soil protein to Pb and Zn sequestration in polluted soil

The distribution of lead and zinc in glomalin-related soil protein (GRSP), a widespread glycoprotein presumably produced by arbuscular mycorrhizal fungi (AMF) in soil, and in some other soil fractions (soil organic matter - [SOM], carbonates, phosphates, etc.) was studied in soils from an area near a lead smelter that differed in SOM, carbonates and heavy metal (HM) content. Total GRSP represented 5.4-21.2% of the SOM and was positively correlated with the soil Pb and Zn concentrations (r=0.57 and 0.66, p=0.007 and p=0.001 for Pb and Zn, respectively). Pb and Zn were predominantly bound to carbonates and organic matter. The amount of lead bound to GRSP varied between 0.69 and 23.4 mg g(-1) DW GRSP which is 0.8-15.5% of the total soil Pb. The amount of GRSP-bound metal was positively correlated with the total concentration in the case of Pb (r=0.90, p=0.000) but the opposite was found for Zn (r=-0.41, p=0.048), indicating that GRSP predominantly binds Pb. The percentages of HM-GRSP in HM-SOM were variable and were not correlated with SOM content.