气浮+SBR+液氯消毒处理工业园废水技改探讨

采用气浮+SBR+液氯消毒工艺处理小蓝工业园废水,一期工程技改后设计规模为25000m3/d,进水水质为COD 600mg/L,BOD5220mg/L,SS 200mg/L,色度80倍,pH值6.5-8.5;经该工艺处理后,出水水质为COD≤100 mg/L,BOD5≤30mg/L,SS≤30mg/L,色度40倍,pH值6-9,达到了国家《城镇污水处理厂污染物排放标准》(GB18918-2002)二级排放标准的要求。     

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)。     

气浮+水解酸化+CASS+气浮过滤处理工业园废水探讨

采用气浮+水解酸化+气浮+气浮过滤工艺处理小蓝工业园二期工程废水,二期工程设计规模为50000m3/d,进水水质为COD 600mg/L,BOD5400 mg/L,SS 400mg/L,色度80倍,p H值6-9;经该工艺处理后,出水水质为COD≤100 mg/L,BOD5≤30mg/L,SS≤30 mg/L,色度40倍,p H值6-9,达到了国家《城镇污水处理厂污染物排放标准》(GB18918-2002)二级排放标准的要求,并且预先对今后提标进行先期部分考虑。     

水解-接触氧化-砂滤工艺处理高浓果汁加工废水

伊天果汁(陕西)有限公司综合废水水质参数:CODCr≤4 300 mg/L,BOD5≤2 200 mg/L,SS≤1 500mg/L,pH4.5～10,水温30～40℃.采用水解酸化-生物接触氧化-砂滤法处理,运行结果表明,处理后出水CODCr 115 mg/L、BOD5 22 mg/L、SS 58 mg/L、pH 6～8,达到《污水综合排放标准》(GB 8978-1996)中的二级标准.     

物化与一体式氧化沟处理印染废水改造工程

采用混凝沉淀 ABR 一体式氧化沟处理印染废水。运行结果表明,在进水CODcr 1800～2000 mg/L,BOD5 400～500 mg/L,硫化物0.5～3.0 mg/L时,处理后的出水水质可达到广东省《水污染物排放限值》(DB44/26-2001)第Ⅱ时段一级排放标准:CODcr≤90 mg/L、BOD5≤20 mg/L、硫化物≤0.5 mg/L。该工艺简单,占地面积小,运行方便,运行费用低。     

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。     

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。     

ABR＆BAF组合工艺处理造纸废水

采用ABR（折流板反应器）＆BAF（曝气生物滤池）组合工艺处理造纸废水。运行结果表明。在进水CODcr,4004-500mg／L,BOD5 200-300mg／L时,处理后出水水质可达到《制浆造纸工业水污染物排放标准》（GB3544—2008）第二时段一级标准之现有企业水污染排放限值：CODcr≤100mg／L,BOD5≤30mg／L。该工艺简单,占地面积小,运行方便,运行费用低。     

啤酒生产废水处理工程实例

采用预处理/厌氧UASB/好氧SBR处理工艺处理啤酒生产废水,处理规模为3000 m~3/d,原水COD为3000 mg/L、BOD5为1500 mg/L、NH_3-N为20 mg/L、SS为800 mg/L,处理后出水水质满足《河南省啤酒工业水污染物排放标准》(DB41)中表2排放标准,即COD≤60 mg/L、BOD5≤15mg/L、NH_3-N≤8 mg/L、SS≤50 mg/L。该工艺运行费用低、管理简单方便、易于操作、无二次污染。     

Sapindaceae,cyanolipids, and bugs

Scentless plant bugs (Heteroptera: Rhopalidae) are so named because adults of the Serinethinae have vestigial metathoracic scent glands. Serinethines are seed predators of Sapindales, especially Sapindaceae that produce toxic cyanolipids. In two serinethine species whose ranges extend into the southern United States,Jadera haematoloma andJ. sanguinolenta, sequestration of host cyanolipids as glucosides renders these gregarious, aposematic insects unpalatable to a variety of predators. The blood glucoside profile and cyanogenesis ofJadera varies depending on the cyanolipid chemistry of hosts, and adults and larvae fed golden rain tree seeds (Koelreuteria paniculata) excrete the volatile lactone, 4-methyl-2(5H)-furanone, to which they are attracted.Jadera fed balloon vine seeds (Cardiospermum spp.) do not excrete the attractive lactone. Loss of the usual heteropteran defensive glands in serinethines may have coevolved with host specificity on toxic plants, and the orientation ofJadera to a volatile excretory product could be an adaptive response to save time.Mention of a commercial product does not consititute an endorsement by the USDA.     

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.     

Many Drugs of Abuse May Be Acutely Transformed to Dopamine,Norepinephrine and Epinephrine In Vivo

It is well established that a wide range of drugs of abuse acutely boost the signaling of the sympathetic nervous system and the hypothalamic–pituitary–adrenal (HPA) axis, where norepinephrine and epinephrine are major output molecules. This stimulatory effect is accompanied by such symptoms as elevated heart rate and blood pressure, more rapid breathing, increased body temperature and sweating, and pupillary dilation, as well as the intoxicating or euphoric subjective properties of the drug. While many drugs of abuse are thought to achieve their intoxicating effects by modulating the monoaminergic neurotransmitter systems (i.e., serotonin, norepinephrine, dopamine) by binding to these receptors or otherwise affecting their synaptic signaling, this paper puts forth the hypothesis that many of these drugs are actually acutely converted to catecholamines (dopamine, norepinephrine, epinephrine) in vivo, in addition to transformation to their known metabolites. In this manner, a range of stimulants, opioids, and psychedelics (as well as alcohol) may partially achieve their intoxicating properties, as well as side effects, due to this putative transformation to catecholamines. If this hypothesis is correct, it would alter our understanding of the basic biosynthetic pathways for generating these important signaling molecules, while also modifying our view of the neural substrates underlying substance abuse and dependence, including psychological stress-induced relapse. Importantly, there is a direct way to test the overarching hypothesis: administer (either centrally or peripherally) stable isotope versions of these drugs to model organisms such as rodents (or even to humans) and then use liquid chromatography-mass spectrometry to determine if the labeled drug is converted to labeled catecholamines in brain, blood plasma, or urine samples.     

2008～2009年世界塑料工业进展

收集了2008年7月～2009年6月世界塑料工业的相关资料,介绍了2008～2009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、环氧树脂、不饱和聚酯树脂)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。     

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.