含湿Ca(OH)2颗粒脱硫反应特性的模型研究

在半干法脱硫装置中脱反应主要表现为湿Ｃａ（ＯＨ）２颗粒与ＳＯ２的反应，在液相反应溶解和传质理论基础上，通过对含湿Ｃａ（ＯＨ）２颗粒内反应机理的研究分析提出了含湿Ｃａ（ＯＨ）２颗粒相比发生明显变化。     

Production of laccase by Coriolus versicolor and its application in decolorization of dyestuffs: (Ⅱ) Decolorization of dyes by laccase containing fermentation broth with or without self-immobilized mycelia

The capability of decolorization for commercial dyes by Coriolus versicolur fermentation broth containing laccase with or without immobilized mycelium was evaluated.With cell-free fermentation broth containing laccase,high decolorization ratio was achieved for acid orange 7,but not for the other dyes concerned.The immobilized mycelium was proved to be more efficient than the cell-free system.All the four dyestuffs studied were found being decolourized with certain extent by immobilized mycelium.The repeated-batch decolorization was carried out with satisfactory results.The experimental data showed that the continuous decolorization of wastewater from a printing and dyeing industry was possible by using self-immobilized C.Versicolor.     

商用垃圾流化床焚烧炉多环芳烃排放的环境评价

对流化床垃圾焚烧炉中PAHs的排放特性进行了研究 .结果表明 ,烟囱烟气为流化床垃圾焚烧炉PAHs排放的主要途径 ,日排放量要高于其它途径 1— 2个数量级 ,且以低分子量物质为主 .脱除剂的添加对烟气中PAHs有减少的作用 ,但却增加了循环出口水中PAHs含量 .不同工况时PAHs环境排放毒性有变化 ,垃圾与煤混烧大于全煤 ,添加脱除剂大于未添加工况 ,但少于垃圾比例高的工况 .垃圾比例越高 ,毒性越大     

复合式静电除尘器脱除电厂排放PM2.5研究

控制燃煤电厂的小颗粒PM2.5排放是控制大气可吸人颗粒物污染的重要途径之一.传统静电除尘器对亚微米级颗粒脱除效率较低,为提高脱除效率,建立了一种脉冲预荷电直流收尘的复合式除尘系统,采用较低能耗的高压窄脉冲放电对颗粒物预荷电,大大提高了亚微米级颗粒的荷电量.结合传统的直流静电除尘器可以大幅提高对亚微米级颗粒的脱除效率,对小于1μm的颗粒脱除效率可以达到90%以上.并分析了脉冲荷电的电源形式和电压等因素对脱除效率的影响,为改造传统静电除尘器提供了理论支持.     

Production of laccase by Coriolus versicolor and its application in decolorization of dyestuffs : (Ⅰ) Production of laccase by batch and repeated-batch processes

The production of laccase by Coriolus versicolor was studied.The effect of cultivation on laccase production by Coriolus versicolor was examined to obtain optimal medium and cultivation conditions.Both batch and repeated-batch processes were performed for laccase production.In repeated-batch fermentation with self-immobilized mycelia, total of 14 cycles were performed with laccase activity in the range between 3.4 and 14.8U/ml.     

电石渣和铝土粉的高温燃烧脱硫特性及微观分析

研究了电石渣和铝土粉作为燃煤添加剂的高温脱硫特性及其微观反应机理，发现在1200℃下燃煤中同时添加电石渣和铝土粉时，低温硫析出峰与只添加电石渣时几乎一致，而高温硫析出峰则大大降低，从而使脱硫率由30．5％明显提高到45．19％．XRD和SEM分析表明：电石渣中富含的CaO以及铝土粉中富含的Al2O3，与燃煤固硫过程中生成的部分CaSO4在高温下反应生成了耐热物相“硫铝酸钙”，是钙铝基添加剂比单纯钙基具有更高脱硫率的最主要原因．另外铝土粉增强了电石渣燃煤固硫渣的熔融程度，从而使硅酸盐熔融物有更多机会将CaSO4等固硫产物包裹以抑制其高温分解，是它具有更高脱硫率的另一个原因．     

我国非煤矿山安全生产的差距

从我国非煤矿山安全生产立法、安全生产管理体制、监察执法、群众监督、宣传教育、科研、矿山企业等方面与国外矿业进行了对比分析，分析了我国非煤矿山存在的问题以及与国外的差距，最后分析了产生问题与差距的原因。     

分级喷水增湿对半干法烟气脱硫效率的影响

研究了增湿水量、增湿水级数以及增湿水分配方式等参数对半干法烟气脱硫效率的影响。得出了一定试验条件下这些参数的优化值，它们分别为：增湿水量30％、三级增湿、递减分配方式。在此优化工况下，可以使塔内和系统脱硫效率分别达到68％和90％以上，比无增湿时分别提高6％和5％左右。     

Study on phosphorus loadings in ten natural and agricultural watersheds in subtropical region of China

Water eutrophication in subtropical regions of southern China threatens watershed health and is of major concern. However, annual phosphorus (P) loading and its dominant causes are still unclear, especially at the watershed scale. In this study, we investigated dynamic P loadings and associated factors (e.g., land use, livestock production, and runoff depth) in ten watersheds that varied in area from 9 to 5,212 ha in a hilly area of Hunan Province, China. A flowmeter was installed at the outlet of each watershed, and total P (TP) and soluble P (SP) concentrations were monitored periodically from June 2010 to October 2012. The results showed that annual P loadings (APLs) in the ten watersheds ranged from 22.8 to 247.8 kg P/km² and that P loss primarily occurred from April to June of each year during the main rainfall season in the study area. In addition, the average eutrophication (>0.05 mg P/L) ratio for stream waters was 86.7 % during the study period, which was indicative of a potentially serious condition for the local water environments. Annual P loadings were linearly related to livestock density (LD; R?=?0.92, p?<?0.01), whereas the eutrophication ratio of stream water was significantly (p?<?0.05) correlated with LD (R?=?0.61), percentage cropland (R?=?0.71), and percentage forest cover (R?=??0.68). Thus, it is concluded that the control of livestock production has the greatest potential for reducing P loadings in watersheds in this subtropical area. This will be beneficial to the amelioration and protection of local environment.     

Waste incineration,PVC, and dioxins

Waste incineration is becoming increasingly necessary to tackle the rapidly rising amounts of municipal solid waste (MSW); in China many large cities are already surrounded by a girdle of landfills. Still, the not-in-my-backyard (nimby) syndrome holds strong. This attitude stems from fear of dioxins. These have been associated with incineration (‘dioxin factories’) and at times also with polyvinylchloride. In this paper this issue is analysed. China should build additional trust in MSW incineration, following promulgation of stricter emission standards, enforced by stringent controls.