XSC-700树脂对盐湖卤水中硼的吸附

以新疆某盐湖卤水为原料,采用有限浴法研究XSC-700螯合树脂对硼的吸附性能,测定树脂在不同条件下的吸附量。考察搅拌速率、稀释量、温度、pH、酸度、树脂量等因素对吸附、洗脱的影响。研究结果表明：该树脂在盐湖卤水中对硼有较强的吸附能力,且洗脱性能良好;在稀释量为15％时,吸附曲线随温度升高而变陡,但平衡吸附量基本不变,吸附量受搅拌速率、pH影响较小。硼的洗脱性能良好,选用浓度为0.5 mol/L的盐酸为洗脱剂,控制洗脱剂与树脂量比为8：1(mL：g)时洗脱,洗脱率达到92.6％。     

高原富锂水盐体系相平衡及热力学性质研究进展

 中国西部高海拔青藏高原腹地拥有众多盐湖,这些盐湖以富含锂而闻名世界。其卤水组成可用Li⁺,Na⁺,K⁺,Mg²⁺//Cl^-,SO₄^2-,CO₂^3-,borate-H₂O表示。开展多组分复杂盐湖卤水体系相平衡及热力学性质研究,不仅对该种类型盐湖卤水的成因和成矿规律及化学行为的揭示具有重要意义,而且对于盐湖卤水盐类资源综合利用具有指导意义。本文重点归纳总结了国内外高原富锂水盐体系的稳定相平衡、介稳相平衡及热力学性质的研究进展,指出了含锂水盐体系相平衡及热力学性质研究存在的问题及未来研究发展方向。     

南翼山油田卤水低温结晶过程研究

自行设计搭建了一套油田水低温冷冻实验设备, 使用该设备研究了南翼山油田原始卤水在-18.90 °C到-30.90 °C范围内的结冰析盐过程, 精确测量了油田水随温度降低第一种和第二种固相的析出温度. 化学分析得到了该温度范围内Ca²⁺、Mg²⁺、K⁺、Cl^-、B₂O₃、Na⁺六种常量组分在液相中的含量变化趋势. 使用低温X射线衍射法对原始卤水在低温下得到的固相进行了初步的鉴定, 并对南翼山油田水的低温相变过程进行了实时监测. 实验结果表明: 南翼山油田水降温至-19.10 °C析出第一种盐NaCl·2H₂O, 降至-23.55 °C同时析出冰和NaCl·2H₂O.     

贵州虾类初步调查

本文报道贵州虾类２１种，隶属３科６属，其中有６种为新纪录：对贵州重要经济虾类进行了生物学研究，并为虾类资源的开发保护和增殖提出建议。     

硫化钠浓卤蒸发过程中消除结疤的研究

本研究是以BaS为净化剂,清除浓卤中的杂盐,以解决硫化钠蒸发过程中的结疤问题。本法所采用的工艺简单、效果明显。同时,用BaS作净化剂,不仅原料价格便宜,来源广泛,而且对硫化钠产品的质量和产率均有所提高。     

Seepage-Diffusion Model of Brine Migration in Inhomogeneous Aquifers

A new phenomenological mathematical model of the propagation of high- and low-salinity solutions through inhomogeneous aquifers is proposed. The model consists of interrelated equations of two-phase flow and diffusive mass transfer through a porous medium in a region with a traveling boundary. Features of different contamination scenarios of are analyzed with reference to particular examples.     

电解槽系统的工艺改进及技术经济指标影响因素分析

分析盐水系统、电解槽系统,确定影响电解槽技术经济指标的主要因素,通过优化设计,改进设备,控制工艺,确保电解槽高效长周期运行.     

Saltwater Upconing and Decay Beneath a Well Pumping Above an Interface Zone

Saltwater, or brine, underlies freshwater in many aquifers, with a transition zone separating them. Pumping freshwater by a well located above the transition zone produces upconing of the latter, eventually salinizing the pumped water, forcing shut-off. Following the well’s shut-off, the upconed saltwater mound undergoes decay, tending to return to the pre-pumping regime. The FEAS code is used for the simulation of coupled density-dependent flow and salt transport involved in the upconing–decay process. In this code, the flow equation is solved by the Galerkin finite element method (FEM), while the advective–dispersive salt transport equation is solved in the Eulerian–Lagrangian framework. The code does not suffer from the instability constraint on the Peclet number. The code is used to investigate the transient upconing–decay process in an axially symmetric system and to discover how the process is affected by two major factors: the density difference factor (DDF) and the dispersivities. Simulation results show that under certain conditions, pumping essentially freshwater can be maintained for a certain time period, the length of which depends on the dispersivity values used. A recirculating flow cell may occur in the saltwater layer beneath the pumping well, widening the saltwater mound. The decay process is lengthy; it takes a long time for the upconed saltwater to migrate back to its original shape of a horizontal transition zone prior to pumping. However, the wider transition zone caused by hydrodynamic dispersion can never return to the initial one. This indicates that once a pumping well is abandoned because of high salinity, it can be reused for groundwater utilization only after a long time. It is also shown that the upconing–decay process is very sensitive to DDF, which, in our work, ranges from 0 (for an ideal tracer) to 0.2 (for brine). For a DDF of 0.025 (for seawater), local upconing occurs only for low iso-salinity surfaces, while those of high salt concentration remain stable after a short time. For an ideal tracer, all iso-salinity surfaces rise toward the pumping well, whereas for brine only iso-salinity surfaces of very low salinity upcone towards the pumping well. This may imply that the traditional finding that the sharp interface approximation is practically close to the 0.5 iso-salinity surface may not be true for a high DDF solution.     

虾蟹类维生素营养的研究进展

综述了维生素对虾蟹类亲体性腺成熟、胚胎发育、存活、蜕皮和生长、抗病力和免疫力、营养需要量、缺乏症和过量症的影响,并对今后虾蟹类维生素营养方面的研究提出了建议。     

同工酶在水产动物研究中的应用

综述了近年来同工酶在水产动物研究中的应用,包括个体胚胎发育过程中同工酶的变化、机体中同工酶的组织特异性,同工酶应用于种质鉴定、遗传育种、病理研究与诊断,以及同工酶的影响因素等方面,为今后的有关研究和渔业生产提供参考.