絮凝剂对钻井污水ξ电势的影响

钻井污水是一种棕黑色的多组分复杂体系，含有大量粘土粒子、电解质、少量浮油和油田处理剂，基本上属于胶体体系。ξ电势是胶体的一个重要性质，试验中研究测试了几种常用无机絮凝剂处理钻井污水时ξ电势的变化，根据ξ电势的大小及等电点时絮凝剂的用量对其进行了筛选。     

最佳钻井防污土建结构的设计及应用

设计了一种高效实用的钻井防污土建结构，该结构与原结构相比能杜绝处理渣泥流入废水沉砂池参与废水循环，也可防止废弃钻井液和掏罐泥浆水直接进入沉砂池，因此能更好地控制钻井废水浓度，一定程度上提高钻井废水处理达标率，同时该结构具有对处理水进一步隔油、净化等优点，现场推广应用后得到证实。     

Mechanical Properties with the Functional Group of Additives for Starch/PVA Blend Film

This paper deals with the mechanical properties and degree of swelling (DS) of starch/PVA blend film with the functional groups i.e., hydroxyl and carboxyl group, of additives. Starch/PVA blend films were prepared by using the mixing process. Glycerol (GL) with 3 hydroxyl group, sorbitol (SO) with 6 hydroxyl group, succinic acid (SA) with 2 carboxyl group, malic acid (MA) with 1 hydroxyl and 2 carboxyl group, tartaric acid (TA) with 2 hydroxyl and 2 carboxyl group and citric acid (CA) with 1 hydroxyl and 3 carboxyl group were used as additives. The results of measured tensile strength (TS) and elongation (%E) verified that both hydroxyl and carboxyl group as a functional groups increased the flexibility and strength of the film. Values of DS for GL-added and SA-added films were low. However, DS values of the films added MA, TA or CA with both hydroxyl and carboxyl group were comparatively high. When the film was dried at low temperature, the properties of the films were evidently improved. The reason is probably because the hydrogen bonding was activated at low temperature.     

布袋式除尘器在电厂输煤系统上的应用

针对胜利电厂皮带输煤系统粉尘浓度高、污染环境、影响职工身体健康的问题，用布袋式除尘器替代原有的静电除尘器，并对布袋除尘器辅助系统进行了多处改进和完善，提高了运行的可靠性。投运后粉尘质量浓度由原来的18．3mg／m^3降低至1．68mg／m^3，除尘效率达到了98％以上。     

静电基本参数的测试原理

静电测试是整个静电防护工程中不可或缺的组成部分,也是静电防护设计和管理的依据.本文主要介绍了静电基本参数中的静电电位、静电电容和静电电量的测试原理,并结合具体测试数据对测试的方法和仪器进行了分析.     

单板层积梁弯曲破坏的试验研究与分析

在万能力学试验机上测试由高频热压方法制造的桦木和椴木单板层积梁的密度、静曲强度(MOR)、弹性模量(MOE)和水平剪切强度等力学性质;讨论LVL(单板层积材)梁受弯曲、水平剪切载荷时的主要破坏形式并得出相关结论。测试结果表明,在该试验条件下,桦木和椴木LVL梁具有较大的密度、MOR和较高的MOE。其主要物理力学性能受树种的影响较大,桦木LVL梁的主要性能均优于椴木LVL梁。当LVL梁受弯曲破坏时,其主要破坏形式为整体断裂破坏、开裂破坏以及混合破坏等3种;受水平剪切应力破坏时,以基材剪切破坏和胶层剪切破坏两种形式为主。     

炭法烟气脱硫技术研究进展

炭法烟气脱硫技术经半个多世纪的发展，在脱硫剂、脱硫工艺、脱硫原理及联合脱除氮氧化物和有毒物质等方面取得了许多进展。在概述炭法烟气脱硫技术研究进展的同时，分析了制约炭法烟气脱硫技术发展的原因并对炭法烟气脱硫技术的发展方向提出了几点建议。     

Research on ecosystem services of water conservation and soil retention: a bibliometric analysis

Environmental Science and Pollution Research - Water conservation and soil retention are two essential regulating services that are closely related, and their relationship might produce synergies...     

Research status,challenges and future prospects of renewable synthetic fuel catalysts for CO2 photocatalytic reduction conversion

Environmental Science and Pollution Research - In recent years, with global climate change, the utilization of carbon dioxide as a resource has become an important goal of human society to achieve...