有机絮凝剂的混凝机理研究

在混凝机理的基础上，提出了有机絮凝剂的混凝物理模型，并得到了很好地试验验证。     

Intensification of Coagulation Purification of Highly Colored Waters

The possibility of intensifying the purification of highly colored waters by aluminum hydroxychloride through optimization of coagulant-fluid mixing is confirmed theoretically and experimentally. It is proved that hydrodynamic conditions influence the purification efficiency in the pH range from 7 to 7.5. The advantage of hydraulic-type disperser over mechanical mixers is demonstrated. The value of energy dissipation is substantiated as a criterion of estimating the mixing intensity.     

影响球团矿FeO含量因素正交试验分析

根据包钢带式球团矿生产实际用料情况,研究了焙烧温度、焙烧时间、膨润土配比及预热温度4个因素对球团矿FeO含量的影响,采用了4因素4水平正交试验法。试验结果发现,影响球团矿FeO含量的因素由强到弱分别为焙烧时间、焙烧温度、膨润土配比、预热温度;其中,最优水平为焙烧温度1240℃、焙烧时间14 min、膨润土配比2.0%、预热温度600℃;最差水平为焙烧温度1240℃、焙烧时间8 min、膨润土配比3.0%、预热温度900℃。     

混凝-Fenton法对中晚期垃圾渗滤液预处理研究

利用混凝-Fenton法对中晚期垃圾渗滤液进行预处理研究。首先以PAC为混凝剂,PAM为助凝剂对垃圾渗滤液进行混凝处理,然后对混凝后渗滤液进行Fenton氧化。考察混凝剂用量,起始pH值,H2O2/FeSO4·7H2O投加比,Fenton试剂投药量和搅拌速度对垃圾渗滤液COD去除的影响,并进行正交试验分析。结果表明:混凝法的最佳投药量为1 L渗滤液投加1.5 g PAC和5 mg PAM;Fenton法的最佳条件为:起始pH值为3,H2O2/FeSO4·7H2O投加比为8∶1,Fenton试剂投药量为135 g/L,搅拌速度为150 r/min;各因素对Fenton试验影响大小为:起始pH值Fenton试剂投药量搅拌速度。在最佳条件下,混凝-Fenton法对垃圾渗滤液COD去除率可达91.41%。     

海外矿拜尔法赤泥制备PACF新工艺

实验室采用DTA-TG,SEM-EDS等手段对海外矿拜尔法赤泥合成聚合氯化铝铁进行了研究,重点试验了原料配比、助剂种类条件,工艺过程影响因素,确定PACF的最佳制备条件,最后对实验室合成的PACF进行了混凝对比,表明采用海外矿拜耳法赤泥合成的PACF浊度去除率高达92%,略优于市售PAC产品混凝效果,此技术的成功研发为赤泥综合利用开辟了一套新的途径。     

非常规油气藏压裂返排液资源化利用研究

对非常规油气藏压裂返排液的特点、物性及污染指标进行分析,提出采用破胶混凝技术对返排液进行预处理分离,其水相可再配制压裂液用于现场压裂施工。研究了破胶混凝剂及其优化工艺和压裂液再配制技术,评价了再配制压裂液的主要技术指标及性能,并与清水配制压裂液进行对比。结果表明,再配制压裂液具有基液黏度高,抗温性能较强,易于破胶、返排,残渣量较低及防膨性好等特点。该技术能够实现废液资源化利用,达到节能减排的效果。     

油砂尾砂脱水处理技术的研究进展

介绍了世界各地油砂组成、尾砂形成原因、尾砂脱水研究意义及尾砂脱水处理技术的研究进展。详述了传统沉降法、混凝处理法及机械/物理法等油砂尾砂脱水处理技术,并对相应的技术做出评价。     

The Efficacy of Fibrinogen Concentrates in Relation to Cryoprecipitate in Restoring Clot Integrity and Stability against Lysis

Loss of fibrinogen is a feature of trauma-induced coagulopathy (TIC), and restoring this clotting factor is protective against hemorrhages. We compared the efficacy of cryoprecipitate, and of the fibrinogen concentrates RiaSTAP^® and FibCLOT^® in restoring the clot integrity in models of TIC. Cryoprecipitate and FibCLOT^® produced clots with higher maximal absorbance and enhanced resistance to lysis relative to RiaSTAP^®. The fibrin structure of clots, comprising cryoprecipitate and FibCLOT^®, mirrored those of normal plasma, whereas those with RiaSTAP^® showed stunted fibers and reduced porosity. The hemodilution of whole blood reduced the maximum clot firmness (MCF) as assessed by thromboelastography. MCF could be restored with the inclusion of 1 mg/mL of fibrinogen, but only FibCLOT^® was effective at stabilizing against lysis. The overall clot strength, measured using the Quantra^® hemostasis analyzer, was restored with both fibrinogen concentrates but not cryoprecipitate. α₂antiplasmin and plasminogen activator inhibitor-1 (PAI-1) were constituents of cryoprecipitate but were negligible in RiaSTAP^® and FibCLOT^®. Interestingly, cryoprecipitate and FibCLOT^® contained significantly higher factor XIII (FXIII) levels, approximately three-fold higher than RiaSTAP^®. Our data show that 1 mg/mL fibrinogen, a clinically achievable concentration, can restore adequate clot integrity. However, FibCLOT^®, which contained more FXIII, was superior in normalizing the clot structure and in stabilizing hemodiluted clots against mechanical and fibrinolytic degradation.     

印染废水处理工艺设计探讨

较高浓度印染废水属于较难治理的工业废水.为提高印染废水处理效果,通过试验提出混凝-厌氧水解-好氧处理工艺,应用于如皋协和印染厂,出水可达到纺织染整工业水污染物排放标准(GB 4287-1992)中一级标准.介绍了试验过程、设计参数及经济指标.