不同混凝剂去除水库水藻类浊度试验研究

针对珠海唐家水厂原水水质情况,对几种不同混凝剂的污染物去除效果进行了试验对比,研究不同混凝剂用于水厂原水处理的混凝效果,为水厂合理选择混凝剂提供依据。试验结果表明,FeCl3去除浊度、藻类的效率较好分别为87%,94.1%,硫酸铝去除浊度、藻类的效果较差分别为74.55%,69.29%。     

焦化废水混凝剂效能的试验研究

通过物化动态模拟试验研究,评估不同混凝剂对废水无机污染因子降解性能的影响,研究表明,M-180A/B对T-CN、F-的综合去除能力较强,可达80%,在进水量恒定条件下,反应停留时间延长1倍,各混凝剂对T-CN、F-的去除效率均有不同程度的提高。     

用粉煤灰制备混凝剂的试验研究

用粉煤灰制备混凝剂的试验研究梁天民陈慧如关美玲于福彦（哈尔滨市环保局）（哈尔滨市道里区环保局）本实验是在粉煤灰中加入硫铁矿烧渣和适量氯化钠，在一定温度下用稀盐酸浸提制取混凝剂。进而将制得的混凝剂，用于处理制药、造纸和制革等行业废水，ＣＯＤ去除率达５５...     

聚合硫酸铁混凝剂在低浊度水净化处理中的应用试验

采用聚铁混凝剂处理原水的工业性应用试验，认为该药剂性能优于传统的铁盐混凝剂，对于低浊度的原水具有良好的处理效果，可产生良好的技术经济效益和社会效益。     

PFS和PAM复合混凝剂对印染废水混凝试验研究

针对从印染废水的工业生产混合型城市污水，以CODcr、浊度为出水质指标，对PFS和PAN复合混凝剂对印染废水混凝效果的影响因素作了研究，得出在pH=7，室温，聚合硫酸铁的投加量为1500mg／L，聚丙烯胺投加量为8mg／L，混凝时间大于20min时，混凝效果较好。     

复配混凝剂强化处理生活污水试验分析

针对生活污水中存在的问题,以HCA(聚二甲基二烯丙基氯化铵)作为主要混凝剂,展开复配混凝剂对生活污水的强化混凝预处理试验,以此降低后续处理单位负荷,改善基建费用,并实现对生活污水有效防治的目标.     

聚合氯化铝混凝剂在含沙水净化处理中的应用试验

采用聚合氯化铝处理含沙河水的工业性试验,结果表明该药剂性能优于硫酸铝混凝剂,对含沙原水具有良好的处理效果.     

草浆木质素做混凝剂处理工业废水的试验研究

用草浆造纸黑液提取木质素做混凝剂对毛纺厂、印染厂、染料厂废水进行脱色、去除CODCr试验研究，表明草浆木质素是一种有前途的混凝剂，对纺织、印染、染料厂废水中CODCr及色度具有较好的去除效果。该方法以废治废，具有较好的社会效益和经济效益。     

粉煤灰混凝剂预处理印染废水的试验研究

通过正交实验法研究用粉煤灰、稀硫酸、氯化钠制备混凝剂的工艺条件 ,考察粉煤灰粒度、硫酸用量、加热时间、反应温度等对印染废水预处理效果的影响 ,得出制备混凝剂最佳工艺方案。通过正交实验 ,用最佳混凝剂预处理印染废水 ,找出混凝剂投量、废水pH值、搅拌时间及静置时间等最佳参数 ,探索一条以废治废的可行方法     

复合混凝剂GS处理洗涤剂废水试验研究

实验室试验和工业应用试验结果表明,采用复合混凝剂预处理洗涤剂生产废水,其净化效果明显优于传统的单一型混凝剂PAC和PFS,且用量小,费用低,与生物接触氧化法联合处理洗涤剂生产废水。处理后水质清亮,COD、SS、pH值等污染物指标均达到国家一级排放标准要求,是处理洗涤剂生产废水的一条有效途径。     

High surface area-activated carbon from Glycyrrhiza glabra residue by ZnCl2 activation for removal of Pb(II) and Ni(II) from water samples

A high-surface-area activated carbon was prepared by chemical activation of Glycyrrhiza glabra residue with ZnCl₂ as active agent. Then, the adsorption behavior of Pb(II) and Ni(II) ion onto produced activated carbon has been studied. The experimental data were fitted to various isotherm models. According to Langmuir model, the maximum adsorption capacity of Pb(II) and Ni(II) ions were found to be 200 and 166.7 mg g⁻¹, respectively, at room temperature. Kinetic studies showed the adsorption process followed pseudo second-order rate model. High values of intra-particle rate constants calculated shows the high tendency of activated carbon for removal of Pb(II) and Ni(II) ions.     

Cobalt(III) EDTA complex removal from aqueous alkaline borate solutions by nanofiltration

At the PWR Paks diluted low-level radioactive waste water (LLW) contains the long-lived ⁶⁰Co isotope in EDTA complex form, which has no simple separation procedure. In this research nanofiltration(NF) was studied for selective removal of the cobalt(III) EDTA complex from a drain waste water model solution, which contains mainly sodium borate at an alkaline pH. A suitable NF membrane was chosen to separate the cobalt complex from the borate solution. The NF experiments were performed at constant temperature (25°C) and pressure range 1-10 bar. The cobalt complex and the borate ion rejection (R) as well as the permeate flux of the membrane was investigated as a function of pH. The rejection of the cobalt(III) EDTA complex ion and especially the borate were strongly pH dependent. The rejection of the complex ion and the borate was increased at alkaline pH (at pH 8, R = 73%; at pH 11.5, R = 96% for the cobalt complex; at pH 8, R = 7%; at pH 11.5, R = 59% for borate). NF seems to be a suitable separation method for the removal of the Co(III) EDTA complex from nuclear power plant waste streams. The removal of the cobalt complex ion from an alkaline borate solution by NF is possible in two ways: at slightly alkaline pH by a two-step separation, or at a more alkaline pH (pH > 9.5) by a one-step separation.     

同位素在水文地质研究中的应用与发展

本文通过总结前辈们的研究,并以具体的工程实例,从理论、试验方法和分析测试手段等方面,综合概括我国同位素水文地质学近二十余年取得的发展和成就。同时放眼于国际,指出所面临的压力和挑战及所肩负的责任。     

The effect of water on the reduction of nickel/alumina catalysts

The crucial role of water in the reduction of calcined nickel/alumina catalysts is demonstrated. A fraction of nickel oxide in the catalysts is reduced as NiO powder in the absence of water vapour, and as a nickel aluminate in the presence of water. A much higher dispersion of nickel is attained when the reduction is carried out at low concentration of water vapour.     

纯水制备工艺与设备选型

比较了2种纯水制备工艺（反渗透加混床工艺及离子交换工艺）及设备投资，建议企业根据各自实际情况选择工艺。     

The Temperature Dependence of Interfacial Shear Strength for Various Polymeric Matrices Reinforced with Carbon Fibers

The influence of temperature on the interfacial shear strength between epoxy thermoset matrices and surface treated, carbon AS4 as well as with surface treated and sized AS4-C carbon fibers was investigated. The thermoset matrices all consisted of DGEBA epoxy resin cured with different amine curing agents resulting in matrices with a range of behavior from brittle, elastic to ductile, plastic. For all systems, the results indicate that the interfacial shear strength (ISS) decreases with increasing temperature and as the T_g of the matrix is approached, a large corresponding decrease in the interfacial shear strength is seen. Moreover, the AS4-C (epoxy sized) system revealed a distinct decrease in interfacial shear strength at temperatures lower than the bulk matrix T_g indicating the formation of an interphase layer of composition different from the bulk matrix. Linear superposition methods were used to generate a master curve for the different matrix materials reinforced with the AS4 fibers. These results allow the prediction of ISS at any temperature.     

Study of the surface of the water treated cellulose acetate membrane by atomic force microscopy

Water treated cellulose acetate (CA) membrane's surface was studied by atomic force microscopy (AFM). It was observed that when CA membrane (water untouched) was treated with water, the morphology of the surface change was detected by AFM. The roughness parameter of the surface was increased. No significant change was observed on the surface on drying the water treated membrane at room temperature for four days. The results were discussed on the basis that CA membrane contains continuous channels (network pores), which were formed in water-swollen polymer matrix. These water channels are responsible for the rejection of salt in reverse osmosis (RO) phenomenon.     

循环水余热回收供暖分析与研究

从技术、经济和发展3个方面对利用河北盛华化工循环水余热供暖方案进行了分析。通过对循环水的特点及供暖的需求进行分析,为＂利用热泵技术提取循环水中的热量替代蒸汽加热供暖方案＂提供了设计依据,并进一步对循环水余热供暖进行了经济性分析。     

循环冷却水污水回用技术试验研究

采用降硬、中和、脱盐等联合工艺技术对循环冷却水系统的排污水进行处理,处理后的净水水质(总硬以及Ca2 含量)大大优于新鲜水,完全可作为补充水回用于循环水系统.试验结果表明,采用该工艺可使循环冷却水系统的污水回用率达到86%以上,降低了生产成本,节约了大量的工业用水.     

石化污水回用于工业循环冷却水动态模拟试验的研究

对牛口峪水库石化污水回用于循环冷却水进行了动态模拟试验研究，确定了试验方案和工艺条件。试验证明，筛选的水处理药剂YA或YB水处理效果明显，浓缩倍数可控制在2．0－2．5倍，碳钢试管的各项指标分别达到中石化标准的“可以允许”级和“好”级，优于国家标准GB5005－1995的规定，同时未发现不锈钢有孔蚀。另外，加大杀生剂的投加量和使用广谱灭菌器可以抑制微生物的危害，但由于循环水中的浊度、悬浮物较大，仍有部分粘泥。