以高质量快节奏促进企业环保发展——记江苏天楹环保能源股份有限公司

江苏天楹环保能源股份有限公司(以下简称公司)是一家集投资、建设、运营、维护垃圾焚烧发电项目和相关环保设备研发及制造为一体的环保新能源企业,是江苏省十二五环保产业发展重点培育的龙头企业之一。自2007年12月启东生活垃圾焚烧发电项目开工建设以来,公司通过自主创新获得了多项国家专利,并通过引进国外先进成套技术,致力于打造环保治理精品工程和以垃圾焚烧设备、烟气净化、污水处理、垃圾压缩为主导产品的国内领先的环保装备制造基地。     

我国最大生活垃圾焚烧厂在上海闵行奠基

2004年12月28日，作为闰行区第二轮环保三年行动计划的主要项目之一的上海闽行生活垃圾焚烧厂在华漕镇奠基。闽行生活垃圾焚烧厂是我国目前在建的最大的生活垃圾焚烧厂，总投资14．78亿元，占地13．33hm^2，总建筑面积38000m^2，规划处理能力3000t／d，建成后不但能够从根本上解决闲行区、徐汇区、卢湾区生活垃圾无害化处理问题，而且将为上海市固体废物的资源化、减量化和建立循环型社会创造条件。该项目将于2006年9月建成试运行。     

2018中国西部垃圾焚烧发电发展论坛

<正>2018中国西部垃圾焚烧发电发展论坛暨城市固体废物处理技术与设备展览会,将于2018年4月19-21日在成都世纪城新会展中心。届时,大会将汇聚超过12个国家和地区近400家环保相关企业展出,展览面积近18000平米,观众16000人次。由四川省市政市容协会参与主办的2018中国西部垃圾焚烧发电发展论坛暨城市固体废物处理技术与设备展览会将于2018年4月19-21日在成都世纪城新会展中心与西部最大环保展——CDEPE中国成都环保产业博览会同期举行。届时,四川省市政市容协会将组织相关会员单位参观采购,并协同地方政府及权威行业机构,打造西南地区首个完整呈现固体废弃物处     

利用我国技术优势发展垃圾焚烧产业的思考

本文论述了垃圾焚烧在我国环保领域的重要地位及市场前景;阐述了国内垃圾处理及其工艺和装备的现状及掌握焚烧核心技术的必要性;对利用我国在有色冶金工程中的技术优势,开发具有自主知识产权的垃圾焚烧技术的可行性进行了探讨和分析。     

产业

四川灾区急需垃圾焚烧装置；酒泉开建设世界最大风电基地；一批新能源车型获得“准生证”；开发区要进行生态化改造；国家鼓励发展七大环保设备。     

我国垃圾焚烧技术发展方向探讨

日本现已有2000余家垃圾焚烧厂，与其他发达国家一二百家相比，其垃圾焚烧技术在国际上具有典型性和代表性。笔者今年10月考察了日本一些有代表性的垃圾焚烧厂后，发现如果没有符合国情的焚烧技术，要想在我国普及垃圾焚烧的难度太大。     

天津滨海新区将建设国家级节能环保示范基地

本刊通讯员:天津滨海新区从能源、建筑、交通、生活等多方面应用国内外先进节能环保技术产品,将按照国家级节能环保示范基地标准开展建设,构建引进、研发、交流节能环保措施的重要平台。在能源和建筑方面:中心商务区和中新生态城将广泛应用集中供热和制冷技术,建立多个小型的垃圾焚烧发电场,将工作、生活所产生的废物进行统     

浅谈垃圾焚烧发电设备的选型及其节能减排

垃圾焚烧发电的过程中,如何从绿色环保、节能减排及发电设备的合理选择成了垃圾焚烧发电迫切解决的问题之一。本文就垃圾焚烧发电设备的选型及其节能减排进行了分析研究。     

我国垃圾焚烧处理现状及其发展方向初探

划分了国内外垃圾焚烧炉的类型，在详细分析我国垃圾焚烧技术的应用现状基础上，结合国情探讨了我国垃圾焚烧技术的发展方向，展望了我国垃圾焚烧技术的发展前景。     

试论垃圾焚烧厂飞灰处理技术及其展望

随着我国垃圾焚烧厂建设的逐渐推广,垃圾焚烧之后产生的飞灰属于危险废物,含有不少重金属.因此,飞灰处理成为目前面临的最大的问题.本文就以垃圾焚烧厂飞灰处理问题为中心,从当前飞灰处理的现状出发,对处理的技术进行分析,论述该技术今后的展望.     

Toxic effects of acetochlor, methamidophos and their combination on nifH gene in soil

Toxic effects of two agrochemicals on nifH gene in agricultural black soil were investigated using denaturing gradient gel electrophoresis （DGGE） and sequencing approaches in a microcosm experiment. Changes of soil nifH gene diversity and composition were examined following the application of acetochlor, methamidophos and their combination. Acetochlor reduced the nifH gene diversity （both in gene richness and diversity index values） and caused changes in the nifH gene composition. The effects of acetochlor on nifH gene were strengthened as the concentration of acetochlor increased. Cluster analysis of DGGE banding patterns showed that nifH gene composition which had been affected by low concentration of acetochlor （50 mg/kg） recovered firstly. Methamidophos reduced nifH gene richness that except at 4 weeks. The medium concentration of methamidophos （150 mg/kg） caused the most apparent changes in nifH gene diversity at the first week while the high concentration of methamidophos （250 mg/kg） produced prominent effects on nifH gene diversity in the following weeks. Cluster analysis showed that minimal changes of nifH gene composition were found at 1 week and maximal changes at 4 weeks. Toxic effects of acetochlor and methamidophos combination on nifH gene were also apparent. Different nifH genes （bands） responded differently to the impact of agrochemicals： four individual bands were eliminated by the application of the agrochemicals, five bands became predominant by the stimulation of the agrochemicals, and four bands showed strong resistance to the influence of the agrochemicals. Fifteen prominent bands were partially sequenced, yielding 15 different nifH sequences, which were used for phylogenetic reconstructions. All sequences were affiliated with the alpha- and beta-proteobacteria, showing higher similarity to eight different diazotrophic genera.     

Arsenic uptake by arbuscular mycorrhizal maize （Zea mays L.） grown in an arsenic-contaminated soil with added phosphorus

The effects of arbuscular mycorrhizal (AM) fungus (Glomus mosseae) and phosphorus (P) addition (100 mg/kg soil) on arsenic (As) uptake by maize plants (Zea mays L.) from an As-contaminated soil were examined in a glasshouse experiment.Non-mycorrhizal and zero-P addition controls were included.Plant biomass and concentrations and uptake of As,P,and other nutrients,AM colonization,root lengths,and hyphal length densities were determined.The results indicated that addition of P significantly inhibited root colonization and development of extraradical mycelium.Root length and dry weight both increased markedly with mycorrhizal colonization under the zero-P treatments,but shoot and root biomass of AM plants was depressed by P application.AM fungal inoculation decreased shoot As concentrations when no P was added,and shoot and root As concentrations of AM plants increased 2.6 and 1.4 times with P addition,respectively.Shoot and root uptake of P,Mn,Cu,and Zn increased,but shoot Fe uptake decreased by 44.6%,with inoculation, when P was added.P addition reduced shoot P,Fe,Mn,Cu,and Zn uptake of AM plants,but increased root Fe and Mn uptake of the nonmycorrhizal ones.AM colonization therefore appeared to enhance plant tolerance to As in low P soil,and have some potential for the phytostabilization of As-contaminated soil,however,P application may introduce additional environmental risk by increasing soil As mobility.     

Degradation of metabolites accumulated of benzo[a]pyrene by coupling Penicillium Chrysogenum with KMnO4

Several main metabolites of benzo[a]pyrene （BaP） formed by Penicillium chrysogenum, Benzo[a]pyrene-1,6-quinone （BP 1,6- quinone）, trans-7,8-dihydroxy-7,8-dihydrobenzo[a]pyrene （BP 7,8-diol）, 3-hydroxybenzo[a]pyrene （3-OHBP）, were identified by high-performance liquid chromatography （HPLC）. The three metabolites were liable to be accumulated and were hardly further metabolized because of their toxicity to microorganisms. However, their further degradation was essential for the complete degradation of BaP. To enhance their degradation, two methods, degradation by coupling Penicillium chrysogenum with KMnO4 and degradation only by Penicillium chrysogenum, were compared; Meanwhile, the parameters of degradation in the superior method were optimized. The results showed that （1） the method of coupling Penicillium chrysogenum with KMnO4 was better and was the first method to be used in the degradation of BaP and its metabolites; （2） the metabolite, BP 1,6-quinone was the most liable to be accumulated in pure cultures; （3） the effect of degradation was the best when the concentration of KMnO4 in the cultures was 0.01% （w/v）, concentration of the three compounds was 5 mg/L and pH was 6.2. Based on the experimental results, a novel concept with regard to the bioremediation of BaP-contaminated environment was discussed, considering the influence on environmental toxicity of the accumulated metabolites.     

Impact of atrazine and nitrogen fertilizers on the sorption of chlorotoluron in soil and model sorbents

Sorption of chlorotoluron in ammonium sulfate, urea and atrazine multi-solutes system was investigated by batch experiments. The results showed application of nitrogen fertilizers to the soil could affect the behavior of chlorotoluron. At the same concentration of N, sorption of chlorotoluron decreased as the concentration of atrazine increased on the day 0 and 6 in soil, respectively. The sorption of chlorotoluron increased from 0 to 6 d when soils were preincubated with deionized water, ammonium sulfate and urea solution for 6 d. That indicated incubation time was one of the most important factors for the sorption of chlorotoluron in nitrogen fertilizers treatments. The individual sorption isotherms of chlorotoluron in rubbery polymer and silica were strictly linear in single solute system, but there were competition sorption between pesticides or between pesticides and nitrogen fertilizers. That indicated the sorption taken place by concurrent solid-phase dissolution mechanism and sorption on the interface of water-organic matter or water-mineral matter.     

Distribution and ecological effect of mercury in Laogang landfill, Shanghai, China

Laogang landfill near Shanghai is the largest landfill in China, and receives about 10000 t of daily garbage per day, Samples of topsoil and plants were analyzed to evaluate mercury pollution from the landfill. For topsoil samples, there were significant correlations among total mercury （HgT）, combinative mercury （Hgc） and gaseous mercury （HgG）, and content of total organic carbon （TOC）, but, no significantly relationship was found between Hg content and filling time. Hg content changes in vertical profiles with time showed that the average Hgv of profiles 1992, 1996, and 2000 was similar, but their average HgG was quite different. HgT was significantly correlated with Hgc in profile 1992 and 2000, and Hgv was significantly correlated with Hg6 in profile 1996. HgG/Hgv ratio in profile samples decreased in the order of （HgG,/HgT）1992〉（HgG/HgT）1996〉〉（HgG/HgT）2000. A simple outline of Hg release in landfill could be drawn： with increasing of filling time, degradation undergoes different biodegradation, accordingly, gaseous mercury goes through small, more, and small proportion to total mercury. Distribution of Hg in plants was inhomogeneous, following the order of leaf〉root〉stem. The highest value of leaf may be associated with higher atmospheric Hg from landfill. Ligneous plants （e.g. Phyllostachys glanca, Prunus salicina and Ligustrum lucidum） are capable of enriching more Hg than herbaceous plants.     

EDTA-enhanced phytoremediation of lead contaminated soil by Bidens maximowicziana

Phytoremediation is a potential cleanup technology for the removal of heavy metals from contaminated soils.Bidens maximowicziana is a new Pb hyperaccumulator,which not only has remarkable tolerance to Pb but also extraordinary accumulation capacity for Pb.The maximum Pb concentration was 1509.3 mg/kg in roots and 2164.7 mg/kg in overground tissues.The Pb distribution order in the B. maximowicziana was:leaf>stem>root.The effect of amendments on phytoremediation was also studied.The mobility of soil Pb and the Pb concentrations in plants were both increased by EDTA application.Compared with CK(control check),EDTA application promoted translocation of Pb to overground parts of the plant.The Pb concentrations in overground parts of plants was increased from 24.23-680.56 mg/kg to 29.07-1905.57 mg/kg.This research demonstrated that B.maximowicziana appeared to be suitable for phytoremediation of Pb contaminated soil,especially,combination with EDTA.     

Decomposition of alachlor by ozonation and its mechanism

Decomposition and corresponding mechanism of alachlor, an endocrine disruptor in water by ozonation were investigated. Results showed that alachlor could not be completely mineralized by ozone alone. Many intermediates and final products were formed during the process, including aromatic compounds, aliphatic carboxylic acids, and inorganic ions. In evoluting these products, some of them with weak polarity were qualitatively identified by GC-MS. The information of inorganic ions suggested that the dechlorination was the first and the fastest step in the ozonation of alachlor.     

Enzymatic oxidation of aqueous pentachlorophenol

The influence of the nonionic surfactant Tween 80 on pentachlorophenol （PCP） oxidation catalyzed by horseradish peroxidase was studied. The surfactant was tested at concentrations below and above its critical micelle concentration （CMC）. Enhancement of PCP removal was observed at sub-CMCs. The presence of Tween 80 in the reaction mixture reduced enzyme inactivation which occurred through a combination of free radical attack and sorption by precipitated products. A simple first-order model was able to simulate time profiles for enzyme inactivation in the presence or absence of Tween 80. At supra-CMCs, the surfactant caused noticeable reductions in PCP removal, presumably through micelle partitioning of PCP which precluded the hydrophobic PCP molecule from interacting with the enzyme.     

Potential of plant polyphenol oxidases in the decolorization and removal of textile and non-textile dyes

In this study an effort has been made to use plant polyphenol oxidases; potato （Solanum tuberosum） and brinjal （Solanum melongena）, for the treatment of various important dyes used in textile and other industries. The ammonium sulphate fractionated enzyme preparations were used to treat a number of dyes under various experimental conditions. Majority of the treated dyes were maximally decolorized at pH 3.0. Some of the dyes were quickly decolorized whereas others were marginally decolorized. The initial first hour was sufficient for the maximum decolorization of dyes. The rate of decolorization was quite slow on long treatment of dyes. Enhancement in the dye decolorization was noticed on increasing the concentration of enzymes. The complex mixtures of dyes were treated with both preparations of polyphenol oxidases in the buffers of varying pH values. Potato polyphenol oxidase was significantly more effective in decolorizing the dyes to higher extent as compared to the enzyme obtained from brinjal polyphenol oxidase. Decolorization of dyes and their mixtures, followed by the formation of an insoluble precipitate, which could be easily removed simply by centrifugation.     

Removal of heavy metals from sewage sludge by low costing chemical method and recycling in agriculture

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