制浆造纸综合废水深度处理中型实验

利用"磁处理+催化聚合+絮凝沉淀"组合技术处理废纸造纸综合废水。处理规模为600m3/d的中型实验结果表明,在进水CODCr150mg/L、色度50倍左右时,出水可稳定在CODCr60mg/L、色度7倍以内;系统对CODCr色度的去除率分别为60%和85%;水处理药剂费用为1.25元/m3。     

染纱废水处理及膜回用工程实例

采用"初沉池+接触氧化+好氧生化+超滤+反渗透+混凝气浮"的组合工艺处理染纱废水,工程实际运行结果显示:进水CODCr≤800 mg/L,SS≤200 mg/L,色度≤400倍,电导率≤3 000μS/cm,外排出水(RO浓水)CODCr≤180 mg/L,SS≤80 mg/L,色度≤60倍,膜清水CODCr≤15 mg/L,色度≤2.0倍,电导率≤200μS/cm,达到当地环保间接排放要求,且膜处理回用率可达到70%以上。     

碱法木浆制浆造纸综合废水深度处理试验

利用"磁整理-梯级反应混凝-生物炭处理"组合技术深度处理碱法木浆制浆造纸综合废水。处理规模为1000m3/d的中型试验结果表明,在进水CODCr为300mg/L、色度200倍的条件下,出水CODCr可达60mg/L、色度为10倍;该系统对CODCr及色度的去除率分别为80%和95%。     

铁碳床联合过氧化氢氧化-混凝技术深度处理制浆废水

采用铁碳床联合过氧化氢氧化-混凝技术对制浆造纸生化处理后的出水进行深度处理,考察了pH值、反应时间、H2O2投加量和进水水质等不同操作条件下对CODCr和色度去除的影响.结果表明,在pH值为5、反应时间为120 min、H2O2投加量为100 mg/L的条件下对污染物去除效果最佳,进水CODCr浓度对CODCr和色度去除影响不大.进水CODCr为520 mg/L、色度为400倍情况下,出水CODCr低于100 mg/L,色度低于50倍,出水各项指标均达到《制浆造纸工业水污染物排放标准》 (GB3544-2008).     

印染废水的悬浮生物滤池/混凝沉淀处理中试

采用中试规模(4 m3/d)悬浮生物滤池A/O/混凝沉淀/O组合工艺处理棉印染废水,考察了不同停留时间(HRT)条件下,该工艺对CODCr和色度的去除效果.试验结果表明,进水CODCr1 000～1 600 mg/L、色度300～700倍、pH值12～14时,经该组合工艺处理后,相应的出水指标为CODCr 70～90 mg/L、色度＜20倍、pH值6～8,完全符合印染废水国家一级排放标准.     

混凝协同好氧生物膜技术深度处理造纸废水的实验研究

采用混凝沉淀协同好氧生物膜技术深度处理造纸废水,分别考察了PAM、FeCl3、Al2(SO4)3这3种不同种类的混凝剂对CODCr和色度去除率的影响,并特别研究了PAM投加量对反应过程的影响规律。结果表明:以FeCl3为混凝剂的协同好氧生物膜技术效果最为显著,色度去除率最高为69.30%,与单独使用FeCl3为混凝剂的混凝沉淀相比,CODCr去除率提高了73.72%;当PAM投加量分别为1.5mg/L、3.0mg/L、4.5mg/L、6.0mg/L时,以3.0mg/L时效果最佳,CODCr和色度去除率分别达到63.18%和47.64%。     

碱法禾草制浆造纸中段废水深度处理的实验研究

利用"化学催化氧化-生物接触氧化"组合技术对制浆造纸中段废水进行深度处理。结果表明,在进水CODCr平均为325 mg/L、色度平均为280倍的条件下,出水CODCr可达59.5 mg/L、色度47倍,低于国家排放标准。该系统具有流程简单、处理效率高、运行稳定可靠等优点。     

废纸制浆造纸废水深度处理中型试验

采用"磁化+两级反应沉淀"工艺深度处理废纸制浆造纸废水,处理规模为600m3/d的中型试验结果表明,该处理系统在进水CODCr92～131mg/L、色度55～65倍、电导率2387～2527μS/cm、总硬度314～347mg/L的情况下,出水水质稳定,出水CODCr44～57mg/L、色度在5～10倍、电导率1428～1514μS/cm、总硬度122～138mg/L,出水水质满足《制浆造纸工业水污染物排放标准》(GB3544-2008)中"水污染物特别排放限值"要求。同时,废水中有机污染物及电导率、总硬度高效去除,可有效拓展废水的回用途径。     

碱减量印染废水处理工程实例

采用厌氧水解/好氧生化/混凝沉淀法的组合工艺处理碱减量印染废水,工程运行结果表明:进水CODCr为2 263 mg/L,SS(悬浮物)为183 mg/L,色度为683倍时,处理后出水CODCr为166 mg/L,SS为7 mg/L,色度为76倍,可达到GB4287—2012《染织纺整工业水污染物排放标准》的现有企业间接排放标准要求。     

铁泥基催化剂非均相Fenton深度处理造纸废水

以Fenton氧化处理造纸废水产生的污泥为原料,复配粉煤灰、煤泥、羧甲基纤维素钠,采用高温热解的方法制备铁泥基催化剂。以废纸造纸二沉池出水为目标污染物,并以CODCr去除率和色度去除率作为评价指标,研究了非均相Fenton深度处理过程中铁泥基催化剂对废水的处理效果。结果表明,铁泥基催化剂的比表面积为230 m~2/g;当反应体系初始pH值为2.5、催化剂投加量15 g/L、m(CODCr)∶m(H₂O₂)=1∶1.5、反应时间100 min时,CODCr去除率为66.7%,色度去除率高于80%,污泥产量比均相Fenton降低了91%～94%。     

Review of techniques to manufacture micro-hydrogel particles for the food industry and their applications

Microgels are ‘soft’ microscopic cross-linked polymeric particles that are being increasingly exploited in a variety of industries for rheology control, encapsulation and targeted delivery. They are valued because of the ability to tune their functionality to address specific applications in oil recovery, coatings, drug delivery, cosmetics, personal care and foods. Food microgels are typically biopolymer hydrogels in the form of microspheres, nanospheres (also called nanogels), spheroids and fibres. The utilisation of engineered microgels in foods has so far been limited, despite their great potential to address several needs in the food industry, including: satiety control, encapsulation of phytonutrients and prebiotics, texture control for healthier food formulations (e.g. reduced fat products), and targeting delivery to specific areas in the digestive tract. We review the scientific and patent literature on the utilisation and manufacturing methods for producing microgels with an emphasis on micro-hydrogels for food applications.     

12—A CRITIQUE OF SOME HYPOTHESES RELATING TO THE HETEROGENEITY OF THE HIGH-SULPHUR PROTEINS OF WOOL

Joubert and Burns prepared a large number of fractions from the high-sulphur proteins of wool and estimated their molecular weights and amino-acid compositions. Their data have been re-examined in order to look for statistically significant interrelations between amino acids and between the proportion of various amino acids and molecular weight. Statistical analysis of the data is also used to examine the credibility of some hypotheses concerning the mechanism of keratin biosynthesis and to provide further evidence for the existence of families of proteins within the high-sulphur fractions of wool.     

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 Latest Data about Development of Chinese Printing Industry in 2013

In the 2014 China（Shanghai）International Printing Week,Director Wang Yanbin released the latest data about development of Chinese printing industry in 2013.According to statistics,in 2013,the total output value of Chinese printing industry exceeded 1trillion Yuan for the first time,reaching 1.03985 trillion Yuan.There were 105,000 printing enterprises in China,employees were 3.415 million.The total asset was 1.06247 trillion Yuan;     

The State Council Issued "Directory of Government Approved Investment Projects(2013 Edition)"

正On December 2nd,2013,the State Council issued the notification of"Directory of Government Approved Investment Projects(2013 Edition)"(hereafter referred to as"notification").It is pointed out in the"notification"that in order to further deepen reforms in investment systems and administrative examination and approval systems,simplify administrative procedures and delegate powers to lower levels,earnestly     

China textile machinery: taking off in progress

正Among the 1600 exhibitors who take apart in the ITMA ASIA+CITME2014 2/3 are Chinese manufactures.If the numerous figures failed to attract your attention,the increase of quality should draw your focus.To adopt the demand of developing textile machine market,domestic textile machinery enterprises now follow the slogan of"technology drives development"to enhance product competitiveness.Our domestic sellers will showcase product ranging from spinning,weaving,dyeing and printing,     

Top Ten News of China's Paper Industry 2013

On December 24th, 2013, the meeting on the selection of top 10 news of China＇s paper industry 2013 sponsored by 〈China Paper Newsletters〉 was held in Beijing. The yearly selection of the top l0 news, which began in 2000, has become a brand activity widely recognized in the industry thanks to the support from the authorities at all levels and public participation.     

National Development and Reform Commission Issued Announcement for Selection of Major Preliminary Research Projects for the "13~(th) Five-Year Plan"

In Apri Commi major p Plan＂ （h 2014, the National Development and Reform ssion issued an announcement for selection of reliminary research projects for the ＂13th Five-Year ereafter referred to as ＂The Announcement＂）     

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 latest scientific     

Contamination of animal feed and food from animal origin with mineral oil hydrocarbons

Oils and fats used for the production of animal feed can become contaminated with mineral oil material originating from gas oils (C₁₈-C₃₅) or synthetic oils (poly alpha olefins, C₂₅ to beyond C₄₅). An important cause is assumed to be the discharge of waste oils, such as motor oil and hydraulic oils. Mineral oil material was analysed by on-line LC-GC-FID directly in the fat or in a raw extract from animal feed or foodstuffs. In Switzerland in summer/autumn 1999 concentrations in oils and fats for feed production were often found to be between 100 and 1000mg/kg. In the feeds, the average concentration was around 100mg/kg with values ranging up to a maximum of 1000mg/kg; few samples were free of contamination. In animal body fat, the average concentration determined in summer 1999 was 25mg/kg, with a maximum of 150mg/kg, although in samples from December 1999, contamination was substantially lower. In the fat phase of eggs, the average concentration was 30mg/kg, with a maximum of 80mg/kg. Paraffin oil is used for feed production, which may account for part of the contamination problem (e.g. eggs).