Water solubility enhancements of PAHs by sodium castor oil sulfonate microemulsions

Water solubility enhancements of naphthalene( Naph), phenantherene(Phen) and pyrene(Py) in sodium castor oil sulfonate(SCOS) microemulsions were evaluated. The apparent solubilities of PAHs are linearly propertional to the concentrations of SCOS microemulsion, and the enhancement extent by SCOS solutions is greater than that by ordinary surfactants on the basis of weight solubilization ratio(WSR). ThelogKcm values of Naph, Phen, and Py are 3.13, 4.44 and 5.01 respectively, which are about the same as the logKow values. At 5000 mg/L of SCOS conccentration, the apparent solubilities are 8.80, 121, and 674 times as the intrinsic solubilities for Naph, Phen, and Py. The effects of inorganic ions and temperature on the solubilization of solutes are also investigated. The solubilization is improved with a moderate addition of Ca^2 , Na^ , NH4^ and the mixture of Na^ , K^ , Ca^2 , Mg^2 and NH4^ . WSR values are enhanced by 22.0% for Naph,23.4% for Phen, and 24.6% for Py with temperature increasing by 5~C. The results indicated that SCOS microemulsions improve the performance of the surfactant-enhanced remediation(SER) of soil, by increasing solubilities of organic pollutants and reducing the level of surfactant pollution and remediation expenses.     

废渣──Al(OH)_3凝胶再利用研究

研究了对处理铝材加工含Al3＋的酸性废液过程中产生的二次污染物Al（OH）3凝胶废渣的应用。含水分约90％、80％左右的Al（OH）3凝胶200g分别与14～16mL、22～24mL95％的工业浓硫酸酸反应，可制得浓度为20％～23％的Al（SO4）3溶液，经稀释可用作造纸原料。     

三种固体废弃物综合利用的初步研究

从环境建设的可持续发展出发 ,结合天津开发区在基础设施及园林绿化建设中面临土源紧缺以及周边地区存在大量的海湾泥、粉煤灰、碱渣土等固体废弃物的现实 ,在详细研究了3种废物的物理、化学性质的基础上探讨了用这些废物代替农田客土的可行性。实验及推广应用结果表明 ,这些废物按适当比例混合后能够形成一种可替代种植客土的新型土壤 ,这种新型土壤的最佳配比(即海湾泥与粉煤灰或碱渣土 )比例为3:1 ,同时该配比基质对植物生长的适宜性优于滨海盐土。     

氨电极测定炼油废水中的氨氮

介绍了电极法测定废水中氨氮的原理以及电极法测定炼油废水中氨氮的实际应用情况，并对在实际应用中遇到的干扰问题进行了探讨。     

两种生物膜法去除微污染原水中氨态氮的效果分析

采用两种生物膜法，即塑料细条半软性填料生物接触氧化和蜂窝管填料生物滴滤法，进行了微污染河水中ＮＨ３－Ｎ去除的试验研究，结果表明：两种方法对原水中ＮＨ３－Ｎ都有显著的去除效果，但前者有效率高，温度影响小，不易堵塞，压降小，出水不必提升，能自动进入后续处理工序，且有操作简便，投资与运行费用省等优点，因此，生物接触氧化法应用作为选择的生物预处理方法。     

废触媒回收钼制取氧化钼试验研究

以含钼钴的废催化剂为原料， 采用氧化焙烧、碱浸、酸化沉淀的方法制取氧化钼。经多次试验表明， 该工艺可行， 所得氧化钼达沪Ｑ／ＨＧ１１－ ２３７－ ８２ （工业） 标准要求， 含钼达６６． ６％ ， 钼回收率约为８５％ 。