碱法草浆中段废水的水解酸化预处理实验

本实验采用厌氧折流板反应器(ABR)对碱法草浆中段废水进行了水解酸化预处理的研究.结果表明:碱法草浆中段废水经过厌氧折流板反应器的水解酸化预处理后,可以提高其可生化性,其最佳工艺条件为:HRT=8h,pH=7,温度为25～35.C;污泥的VSS/SS=0.85、SVI=85.1,具有一定的活性和良好的沉降性能;出水水质优于初沉池.     

碱法草浆中段废水水解-酸化预处理的研究

本实验采用厌氧折流板反应器(ABR)对碱法草浆中段废水进行了水解-酸化预处理研究.结果表明:碱法草浆中段废水经过厌氧折流板反应器的水解-酸化预处理后可以提高其可生化性,其最佳工艺条件为:HRT=8h,pH=7,温度为25～35℃;污泥的VSS/SS=0.85,SVI=85.1,具有一定的活性和良好的沉降性能;出水水质优于初沉池.     

厌氧折流板反应器中消化过程模型的研究

本文对厌氧折流板反应器(ABR)中内部处理过程、相分离特性以及流体流动模型进行了较为详细的研究,对反应器处理酒糟废水的效能也进行了初步探讨。研究结果表明,ABR具有很高的去除水中SS的能力,其内部存在相分离现象,流体流动模型对单个液相间隔区为单级全混流,整个反应器为串联多釜。ABR对水质的改善表明,它将是第二代厌氧反应器用于处理高SS含量废水的一种有效预处理装置。     

草浆中段废水水解酸化预处理的研究

对草浆造纸中段废水进行了折流板式厌氧反应器(ABR)水解酸化预处理的研究,研究结果表明:在水力停留时间9h、容积负荷4.4gCODCr/(L·d)、pH值6、室温的工艺条件下,水解酸化预处理装置运行11天后,废水CODCr、BOD5、SS去除率一直分别稳定在42%、13%、64%左右,废水可生化性由0.34增加到0.52,为后续好氧生物处理创造了有利条件。     

物化—生化法处理制药废水的试验研究

采用中和—气浮—水解酸化—接触氧化的处理工艺处理制药废水,加入生活污水后制药废水易于处理。试验结果表明,废水的COD由原来的1580 mg/L降至95 mg/L,去除率达到94%以上,其余各项指标均达到排放标准,采用厌氧折流板反应器(ABR)能够很好控制废水水解酸化的进程,接触氧化段较高的溶氧对难降解的制药废水有较好的处理效果。     

米粉废水处理技术的研究进展

非糯性大米经研磨、蒸煮、塑性、冷却等工序制成的产品——米粉是我国南方地区的主要主食食品。作为一种常见的大米加工食品,高浓度的悬浮物和有机污染物是米粉废水显著的水质特点。本文在米粉废水处理工艺相关文献的基础上,总结米粉废水处理技术的进展,对米粉废水处理技术中的上流式厌氧污泥床(UASB)、水解酸化—SBR法、厌氧折流板反应器(ABR)和混凝预处理等处理技术的研究进展进行阐述。     

采用厌氧折流板反应器处理爆破法草浆废液

本试验采用厌氧折流板反应器(ABR)处理爆破法草浆废液,并研究了其工艺条件及工艺特征。实验结果表明,在HRT为24h,VLR为5.5kg·m-3·d-1条件下,ABR能有效处理COD浓度为5500mg·L-1的爆破法草浆废液,去除率为70.9%,ABR对负荷冲击有良好的适应性。     

厌氧折流式反应器处理印染废水

对厌氧折流式反应器(ABR)处理难降解印染废水进行中试研究.结果表明,在最佳HRT为24 h条件下,厌氧折流式反应器稳定运行2个月,即使进水COD波动较大,COD的去除效果也良好.进水平均COD 755.4 mg/L,出水平均COD 420.9 mg/L,平均去除率为43.9%.厌氧折流式反应器对色度去除效果较佳,进水平均色度342倍,出水平均色度80倍,平均去除率为76.6%.印染废水B/C值由0.29提高到0.43,废水可生化性明显改善.气质联用(GC-MS)检测可知,印染废水中的有机物得到有效降解.     

混凝-ABR-氧化沟工艺处理印染废水

介绍了混凝.厌氧折流板反应器(ABR)-氧化沟工艺处理印染废水时的工艺流程和运行参数等.结果表明,该工艺对印染废水的冲击负荷具有较强的适应能力,COD和色度去除率分别达96%和94%,出水水质达到广东省<水污染排放限值>(DB 44/26-2001)第Ⅱ时段一级排放标准.     

低浓度废水处理的研究进展

低浓度废水由于碳源不足的特点,对处理中的脱氮除磷效果有着制约作用。综述了低浓度废水处理技术的研究进展,重点介绍了生物膜工艺、序批式活性污泥工艺(SBR)、改良A2/O工艺、人工湿地处理工艺、升流式厌氧污泥床(UASB工艺)、膨胀颗粒污泥床反应器(EGSB工艺)、厌氧折流板反应器(ABR工艺)和组合式折流板厌氧反应器(HABR工艺)。     

Reliable identification of grapevine rootstock varieties using RAPD PCR on woody samples

Since grapevine ( Vitis spp .) rootstock material is being traded increasingly as disbudded woody material a lack of distinctive morphological features on such material necessitates an alternative and reliable means of identification. Methods described here were developed for rapid and efficient extraction of DNA from woody samples rich in phenolic compounds and polysaccharides, and for subsequent identification of varieties by RAPD PCR. Using these methods, and with the application of only one selected RAPD primer, we were able to differentiate sixteen rootstock varieties, including the seven varieties most commonly used in Germany. Problems commonly encountered with reproducibility of RAPD patterns were avoided by choosing primers with a dinucleotide sequence and a high G/C content that allowed a rather high annealing temperature of 45°C. Methods described here should also be useful for other horticultural crops, especially those with woody tissues rich in phenolic compounds and polysaccharides.     

Aroma characterization of various apricot varieties using headspace–solid phase microextraction combined with gas chromatography–mass spectrometry and gas chromatography–olfactometry

The characterization of the aromatic profile of several apricot cultivars with molecular tracers in order to obtain objective data concerning the aromatic quality of this fruit was undertaken using headspace–solid phase microextraction (HS–SPME). Six apricot cultivars were selected according to their organoleptic characteristics: Iranien, Orangered, Goldrich, Hargrand, Rouge du Roussillon and A4025. The aromatic intensity of these varieties measured by HS–SPME–Olfactometry were defined and classified according to the presence and the intensity of grassy, fruity and apricot like notes. In the six varieties, 23 common volatile compounds were identified by HS–SPME–GC–MS. Finally, 10 compounds, ethyl acetate, hexyl acetate, limonene, β-cyclocitral, γ-decalactone, 6-methyl-5-hepten-2-one, linalool, β-ionone, menthone and (E)-hexen-2-al were recognized by HS–SPME–GC–O as responsible of the aromatic notes involved in apricot aroma and considered as molecular tracers of apricot aromatic quality which could be utilized to discriminate apricot varieties.     

Tests of potential functional barriers for laminated multilayer food packages. Part I: Low molecular weight permeants

The advent of the functional barrier concept in food packaging has brought with it a requirement for fast tests of permeation through potential barrier materials. In such tests it would be convenient for both foodstuffs and materials below the functional barrier (sub-barrier materials) to be represented by standard simulants. By means of inverse gas chromatography, liquid paraffin spiked with appropriate permeants was considered as a potential simulant of sub-barrier materials based on polypropylene (PP) or similar polyolefins. Experiments were performed to characterize the kinetics of the permeation of low molecular weight model permeants (octene, toluene and isopropanol) from liquid paraffin, through a surrogate potential functional barrier (25 μm-thick oriented PP) into the food simulants olive oil and 3% (w/v) acetic acid. These permeation results were interpreted in terms of three permeation kinetic models regarding the solubility of a particular model permeant in the post-barrier medium (i.e. the food simulant). The results obtained justify the development and evaluation of liquid sub-barrier simulants that would allow flexible yet rigorous testing of new laminated multilayer packaging materials.     

Analysis of benzo[a]pyrene in spiked fatty foods by second derivative synchronous spectrofluorimetry after microwave-assisted treatment of samples

A simple, rapid and inexpensive method has been developed for the determination of benzo[a     

The development of reference materials for paralytic shellfish poisoning toxins in lyophilized mussel. II: Certification study

This paper describes the second part of a project undertaken to develop certified mussel reference materials for paralytic shellfish poisoning toxins. In the first part two interlaboratory studies were undertaken to investigate the performance of the analytical methodology for several PSP toxins, in particular saxitoxin and decarbamoyl-saxitoxin in lyophilized mussels, and to set criteria for the acceptance of results to be applied during the certification exercise. Fifteen laboratories participated in this certification study and were asked to measure saxitoxin and decarbamoyl-saxitoxin in rehydrated lyophilized mussel material and in a saxitoxin-enriched mussel material. The participants were allowed to use a method of their choice but with an extraction procedure to be strictly followed. The study included extra experiments to verify the detection limits for both saxitoxin and decarbamoyl-saxitoxin. Most participants (13 of 15) were able to meet all the criteria set for the certification study. Results for saxitoxin.2HCl yielded a certified mass fraction of <0.07 mg/kg in the rehydrated lyophilized mussels. Results obtained for decarbamoyl-saxitoxin.2HCl yielded a certified mass fraction of 1.59+/-0.20 mg/kg. The results for saxitoxin.2HCl in enriched blank mussel yielded a certified mass fraction of 0.48 +/- 0.06 mg/kg. These certified reference materials for paralytic shellfish poisoning toxins in lyophilized mussel material are the first available for laboratories to test their method for accuracy and performance.     

Announcing a new international peer-reviewed journal:Food Science and Human Wellness now accepting manuscript submission in English

<正>We are pleased to announce the launch of a new international peer-reviewed journal-Food Science and Human Wellness,ISSN 2213-4530,which is an open access journal,produced and hosted by Elsevier B.V.on behalf of Beijing Academy of Food Sciences.Food Science and Human Wellness is an international peer-reviewed English journal that provides a forum for the dissemination of the     

Chinese CTP Market

According to Printing and Printing Equipment Industries Association of China（PEIAC）＇s statistics to the plate manufucturer in China, in 2013, the actual offset plate production has reached 346 million square meters in China. Among them, the CTP production volume was 245 million square meters, up by 11% than that of last year; the total sales of the CTP plate was 239 million square meters, up by 13%.     

Preparatory Work of Print China 2015 is Going Smoothly

正Held at Guangdong Modern International Exhibition Center,Print China 2015 will cover 7exhibition halls,besides the original Hall No.3,4,5,6,7,the newly built F zone of Hall 3 will be used too.The total area will be140,000 square meters.Hall 3:Offset and large printing equipment,package printing equipment,post press     

INFOPRINT 2014 was Successfully Held in Dongguan

Sponsored by Printing and Printing Equipment Industries Association of China （PEIAC） and organized by Print China magazine, the Seventeenth Beijing International Printing Information Conference （INFOPRINT 2014） was successfully held on 11th Dec. 2014 at Dongguan Exhibition International Hotel.