某织带厂废水处理的应用研究

采用厌氧-好氧-混凝工艺处理某织带厂在染色工序产生的水洗废水,运行结果表明:当进水COD、BOD5、SS、色度分别为15130 mg/L、7520 mg/L、310 mg/L、1020倍时,出水COD、BOD5、SS、色度分别为220 mg/L、85 mg/L、80 mg/L、100倍,出水优于《污水综合排放标准》(GB8978-1996)表4中三级标准,达到当地污水处理厂进水水质要求(COD≤250mg/L,BOD5≤125mg/L,SS≤150mg/L)。     

医院废水处理工程设计

采用生物接触氧化法处理某医院废水,在进水COD、BOD5、SS和粪大肠菌群数分别350 mg/L、200 mg/L、200 mg/L和250×106个/L情况下,出水COD、BOD5、SS和粪大肠菌群数分别为50 mg/L、25 mg/L、40 mg/L、350个/L,处理后出水的各项指标完全达到了国家《医疗机构水污染排放标准》GB18466-2005一级标准。     

某人造板公司中密度纤维板废水处理的应用研究

采用"固液分离预处理+气浮+沉淀+水解酸化+ABR+接触氧化+混凝沉淀"工艺处理某人造板公司生产产生的中密度纤维板废水,运行结果表明:当进水COD、BOD5、SS、色度分别为18280 mg/L、5160 mg/L、4050 mg/L、9820倍时,出水COD、BOD5、SS、色度分别为170 mg/L、55 mg/L、100 mg/L、90倍,出水优于《污水综合排放标准》(GB8978-1996)表4中三级标准,达到当地污水处理厂进水水质要求(COD≤250mg/L,BOD5≤125mg/L,SS≤150mg/L)。     

水解-二级接触氧化法处理水产品加工废水

水解-二级接触氧化法处理水产品加工废水的工程运行结果表明,在进水水质COD≤1400mg／L,BOD5≤700mg／L,SS≤350mg／L,NH3-N≤60mg／L情况下,出水水质为COD≤100mg／L,BOD5≤20mg／L,SS≤70mg／L,NH3-N≤15mg／L,满足《污水综合排放标准》中的一级排放标准,该工艺运行稳定,自动化程度高,管理简单,污泥产量少。     

膜生物反应器处理包装印刷废水

采用混凝沉淀+膜生物反应器组合工艺处理瓦楞纸板包装印刷废水,在进水COD、BOD5、SS的质量浓度分别为7000～25000、3000～15000、500～5000mg/L,色度为60～80倍的条件下,出水COD、BOD5、SS的质量浓度分别小于500、300、10mg/L,色度为10倍左右,出水水质指标可以达到《污水综合排放标准》(GB8978-1996)中规定的三级排放标准。     

UASB—CASS—混凝工艺处理木薯淀粉废水

采用UASB—CASS—混凝工艺处理木薯淀粉废水。工程运行结果表明,在进水COD、BOD5、SS分别为13 078、7 297、3 386 mg/L的条件下,出水COD、BOD5、SS分别为96、18、42 mg/L,三者去除率均在99%以上,出水水质达到《污水综合排放标准》(GB 8978—1996)中的一级标准。同时处理过程中产生的沼气可作辅助燃料,具有良好的环境效益和社会经济效益。     

荧光废水处理的应用研究

采用氧化破乳—混凝气浮—UASB—接触氧化—沉淀工艺处理某飞机制造厂荧光废水,运行结果表明:当进水COD、BOD5、SS、色度分别为7 000、2 000、200 mg/L、400度时,出水COD、BOD5、SS、色度分别为105、24、20mg/L、57度,出水可稳定达到《污水综合排放标准》(GB 8978—1996)的二级排放标准要求,处理效果稳定。     

厌氧-接触氧化工艺处理电厂生活污水的研究

采用厌氧-接触氧化串联工艺处理电厂生活污水。结果表明,在DO质量浓度控制为2～4 mg/L,水力停留时间为0.8 h,水力负荷为3.33 m3/(m2.h)条件下,进水COD为350～600 mg/L,BOD5为320～350 mg/L,SS、NH4+-N质量浓度分别为330～400 mg/L、60 mg/L时,出水COD相对平稳,基本上都在55 mg/L左右;出水BOD5一直处于20 mg/L以下,出水SS质量浓度稳定在10 mg/L。出水氨氮质量浓度均保持在10 mg/L以下。出水水质应满足GB18918-2002城镇污水处理厂污染物排放标准。     

纺织工业印染废水处理实例

江西某纺织企业采用初沉+水解酸化+CASS+混凝沉淀吸附+过滤组合工艺处理纺织工业印染废水,处理水量为8 000 m3/d。调试运行结果表明,当进水COD、BOD5、SS分别为2 000、450、300 mg/L,色度为800倍时,出水COD、BOD5、SS分别为54、10、30 mg/L,色度为30倍,平均COD、BOD5、SS和色度去除率分别为97.3%、97.8%、90.0%和96.3%,出水水质稳定,达到《纺织染整工业水污染物排放标准》(GB 4287—2012)中新建企业水污染物排放限值的要求。     

UASB+接触氧化+SBR工艺在酒精废水处理中的应用

采用UASB＋接触氧化＋SBR新工艺处理某酒厂高浓度酒精废水,酒精糟液废水水质为COD42000mg／L,BOD521000mg／L,SS9000mg／L,水温60-70℃;出水水质为COD≤300mg／LIBOD5≤100mg／L,SS≤150mg／L,出水达到国家污水综合排放二级标准（GB8978-96）。运行结果表明,该工艺运行稳定,处理效果好。对废水处理过程中产生的沼气进行回收利用,经济效益显著。     

Insect antifeedant properties of anthranoids from the genusVismia

Vismiones and ferruginins, representatives of a new class of lypophilic anthranoids from the genusVismia were found to inhibit feeding in larvae of species ofSpodoptera, Heliothis, and inLocusta migratoria.     

Direct observation of freeze-thaw instability of latex coatings via high pressure freezing and cryogenic SEM

Despite its industrial importance, the subject of freeze-thaw (F/T) stability of latex coatings has not been studied extensively. There is also a lack of fundamental understanding about the process and the mechanisms through which a coating becomes destabilized. High pressure (2100 bar) freezing fixes the state of water-suspended particles of polymer binder and inorganic pigments without the growth of ice crystals during freezing that produce artifacts in direct imaging scanning electron microscopy (SEM) of fracture surfaces of frozen coatings. We show that by incorporating copolymerizable functional monomers, it is possible to achieve F/T stability in polymer latexes and in low-VOC paints, as judged by the microstructures revealed by the cryogenic SEM technique. Particle coalescence as well as pigment segregation in F/T unstable systems are visualized. In order to achieve F/T stability in paints, latex particles must not flocculate and should provide protection to inorganic pigment and extender particles. Because of the unique capabilities of the cryogenic SEM, we are able to separate the effects of freezing and thawing, and study the influence of the rate of freezing and thawing on F/T stability. Destabilization can be caused by either freezing or thawing. A slow freezing process is more detrimental to F/T stability than a fast freezing process; the latter actually preserves suspension stability during freezing. Presented at the 82nd Annual Meeting of the Federation of Societies for Coatings Technology, October 27–29, 2004 in Chicago, IL. Tied for first place in The John A. Gordon Best Paper Competition.     

Ethanol and (−)-α-Pinene: Attractant Kairomones for Bark and Ambrosia Beetles in the Southeastern US

In 2002–2004, we examined the flight responses of 49 species of native and exotic bark and ambrosia beetles (Coleoptera: Scolytidae and Platypodidae) to traps baited with ethanol and/or (−)-α-pinene in the southeastern US. Eight field trials were conducted in mature pine stands in Alabama, Florida, Georgia, North Carolina, and South Carolina. Funnel traps baited with ethanol lures (release rate, about 0.6 g/day at 25–28°C) were attractive to ten species of ambrosia beetles (Ambrosiodmus tachygraphus, Anisandrus sayi, Dryoxylon onoharaensum, Monarthrum mali, Xyleborinus saxesenii, Xyleborus affinis, Xyleborus ferrugineus, Xylosandrus compactus, Xylosandrus crassiusculus, and Xylosandrus germanus) and two species of bark beetles (Cryptocarenus heveae and Hypothenemus sp.). Traps baited with (−)-α-pinene lures (release rate, 2–6 g/day at 25–28°C) were attractive to five bark beetle species (Dendroctonus terebrans, Hylastes porculus, Hylastes salebrosus, Hylastes tenuis, and Ips grandicollis) and one platypodid ambrosia beetle species (Myoplatypus flavicornis). Ethanol enhanced responses of some species (Xyleborus pubescens, H. porculus, H. salebrosus, H. tenuis, and Pityophthorus cariniceps) to traps baited with (−)-α-pinene in some locations. (−)-α-Pinene interrupted the response of some ambrosia beetle species to traps baited with ethanol, but only the response of D. onoharaensum was interrupted consistently at most locations. Of 23 species of ambrosia beetles captured in our field trials, nine were exotic and accounted for 70–97% of total catches of ambrosia beetles. Our results provide support for the continued use of separate traps baited with ethanol alone and ethanol with (−)-α-pinene to detect and monitor common bark and ambrosia beetles from the southeastern region of the US.     

Methyl 2,4,6-decatrienoates Attract Stink Bugs and Tachinid Parasitoids

Halyomorpha halys (Stål) (Pentatomidae), called the brown marmorated stink bug (BMSB), is a newly invasive species in the eastern USA that is rapidly spreading from the original point of establishment in Allentown, PA. In its native range, the BMSB is reportedly attracted to methyl (E,E,Z)-2,4,6-decatrienoate, the male-produced pheromone of another pentatomid common in eastern Asia, Plautia stali Scott. In North America, Thyanta spp. are the only pentatomids known to produce methyl 2,4,6-decatrienoate [the (E,Z,Z)-isomer] as part of their pheromones. Methyl 2,4,6-decatrienoates were field-tested in Maryland to monitor the spread of the BMSB and to explore the possibility that Thyanta spp. are an alternate host for parasitic tachinid flies that use stink bug pheromones as host-finding kairomones. Here we report the first captures of adult and nymph BMSBs in traps baited with methyl (E,E,Z)-2,4,6-decatrienoate in central Maryland and present data verifying that the tachinid, Euclytia flava (Townsend), exploits methyl (E,Z,Z)-2,4,6-decatrienoate as a kairomone. We also report the unexpected finding that various isomers of methyl 2,4,6-decatrienoate attract Acrosternum hilare (Say), although this bug apparently does not produce methyl decatrienoates. Other stink bugs and tachinids native to North America were also attracted to methyl 2,4,6-decatrienoates. These data indicate there are Heteroptera in North America in addition to Thyanta spp. that probably use methyl 2,4,6-decatrienoates as pheromones. The evidence that some pentatomids exploit the pheromones of other true bugs as kairomones to find food or to congregate as a passive defense against tachinid parasitism is discussed.     

2007～2008年世界塑料工业进展

收集了2007年7月～2008年6月世界塑料工业的相关资料,介绍了2007～2008年国外塑料工业的发展情况,提供了世界塑料产量、消费量及全球各类树脂的需求量及产能情况.按通用热塑性树脂(聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂)、工程塑料(尼龙、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚)、特种工程塑料(聚苯·硫醚、液晶聚合物、聚醚醚酮)、通用热固性树脂(酚醛、聚氨酯、不饱和聚酯树脂、环氧树脂)不同品种的顺序,对树脂的产量、消费量、供需状况及合成工艺、产品应用开发、树脂品种的延伸及应用的进一步扩展等技术作了详细介绍.     

2005～2006年国外塑料工业进展

收集了2005年7月～2006年6月国外塑料工业的相关资料,介绍了2005—2006年国外塑料工业的发展情况。提供了世界塑料产量、消费量及全球各类树脂生产量以及各国塑料制品的进出口情况。作为对比,介绍了中国塑料的生产情况。按通用热塑性树脂（聚乙烯、聚丙烯、聚苯乙烯、聚氯乙烯、ABS树脂）、工程塑料（聚酰胺、聚碳酸酯、聚甲醛、热塑性聚酯、聚苯醚）、通用热固性树脂（酚醛、聚氨酯、不饱和树脂、环氧树脂）、特种工程塑料（聚苯硫醚、液晶聚合物、聚醚醚酮）的品种顺序,对树脂的产量、消费量、供需状况及合成工艺、产品开发、树脂品种的延伸及应用的扩展作了详细的介绍。