重油催化裂化外甩油浆离心沉降净化研究

重油催化裂化油浆中含有催化剂粉末，需加以分离。采用自己研制的ＧＣ５型高温试管式沉降离心机，对影响重油催化裂化外甩油浆净化效果的主要因素进行了考察，得出油浆的净化效果与催化剂的颗粒分布、油浆的物化性质、离心时间、离心转速和离心温度有关。适宜的操作参数为：离心温度１５０～２００℃，离心转速２０００～４０００ｒ／ｍｉｎ，离心时间６０～９０ｓ。合适的参数选取可使油浆中的催化剂脱除率达９９％以上。

沉降净化雨水与自来水对两种草本园林植物生长的影响

[目的]在不添加任何肥料的前提下,用无土栽培的方式,测试并对比沉降净化雨水与自来水对玉簪(%Hosta plantaginea(Lam.)Aschers)及黄毛草莓(F.nilgrrensis Schlecht.)%生长的影响。[方法]以珍珠岩为栽培基质,以园林草本植物玉簪及黄毛草莓为试材,对比研究在只灌溉2种水而不添加任何肥料的情况下,2种待测植物的病害发生率、株平均叶片数量、平均叶面积大小、叶片叶绿素含量、地上部分鲜重、地下部分鲜重及黄毛草莓的株平均分枝数、平均枝长、平均根长等指标。[结果]较之于自来水,沉降净化雨水对这2种园林植物的形态结构、生物量及叶绿素含量等指标均有正向影响。[结论]沉降净化雨水可代替自来水用以灌溉园林植物,从而在一定程度上起到节约用水的目的。

明一污水站特殊污水处理技术研究与应用

常规工艺预处理钻井废液、酸化废液、压裂废液等特殊污水效果差,本文介绍的采用中和-氧化破胶絮凝除铁脱色一沉降净化的预处理方案处理后的特殊污水,水质达标符合率达99.27%,预处理特殊水污水1.5×104 m3,与明一联来水按一定比例混合掺入污水处理系统,水质实现稳定达标。

A preliminary study on air microorganism in a wood mill

The air microbial species and quantities in a wood mill in Harbin, China weremeasured using sedimentation plate method. Results showed that the microbial quantity in the air atthe workshop without depurator (54939 cfu·m^(-3)) was 2.1 times that of the workshop withdepu-rator (25768 cfu·m^(-3)). The depurator could purify air microorganisms at the workshop, witha purifying rate of 53.1%, but it did not reach the standards of clean air. Comparatively thedepurator is effective in reducing the quantity of air actinomyces, and some kinds of airactinomyces, such as Scabies, Cinereas and Hygroscopicas, can be clean out, but it is not veryeffective to bacteria and fungi. It is suggested that more effective and feasible methods should bedeveloped for purifying air microorganisms at the workshop in the future.