热浓缩法处理环己酮皂化废液

利用传统的蒸发、结晶预处理装置,除去皂化液中的有机酸钠盐,使皂化液废水的CODcr指标达到进二级污水处理厂的要求,其CODcr的去除率达95%左右。     

H酸综合废水治理工艺试验研究及工程应用

针对H酸母液及T酸一次洗水高含盐量有机废水进行了系统的实验研究。结果表明：废水经冷却、结晶、过滤后，用铁屑过滤，石灰乳、PAM处理。使废水CODcr去除率为50％，脱色率为70％，BOD5／CODcr 提高到0．2以上，预期CODcr 去除率达60％以上，BOD5去除率达85％以上，NH3-N去除率达80％以上。     

内电解法处理染料生产废水试验研究

利用铁炭在水中发生的内电解过程可以有效地去除染料生产废水的色度,并提高污水的可生化知识性,同时对CODcr也有一定的去除效果。试验结果表明,进水CODcr为1200mg/L的染料废水,经内电解法处理后,脱色率可达75%以上,CODcr去除率也可达到45%左右,该法对CODcr的处理效果比单纯的石灰乳中和混凝沉淀法要高10%以上。     

TiO2光催化氧化降解印染废水的研究

对TiO₂光催化剂处理实际印染废水的可行性进行了试验研究，探讨了印染废水的CODcr去除率和脱色率随光照时间、光催化剂用量、光照强度、试液初始pH值和H2O2加入浓度等因素影响的变化规律。试验结果表明, TiO2光催化CODcr能有效降解印染废水，使其CODcr和色度显著降低。     

盐湖尾渣十水碳酸钠中杂质脱除方法的试验研究

采用重结晶法、氧化还原法对尾渣十水碳酸钠中水合肼、NaCl等进行除杂试验研究,结果表明:重结晶法在适宜的固液比为2.5∶1时,水合肼的除去率达34.1%,NaCl的除去率达52.97%。氧化还原法除杂中次氯酸钠的适宜添加量为0.108g,即为理论量的120%,水合肼的除去率达80%,NaCl的除去率为40.68%;双氧水适宜的添加量为0.024g,水合肼的除去率达66.67%,NaCl的除去率为38.98%。试验为十水碳酸钠综合利用提供了基础数据。     

催化电解-混凝法处理有机废水的研究

文章利用自制的电解装置进行电催化氧化处理有机废水的研究。经催化电解研究表明,确定了最佳处理条件为：电极间距1.0cm,pH3.7,电解电压12.0V,电解时间50min,NaCl投入量100mg/L,在该条件下处理有机废水,其CODcr去除率达到60%以上;经过铝铁复合混凝剂混凝和催化电解两步处理工艺后,各类废水的CODcr去除率均达到80%以上。     

硫铁矿烧渣制备聚合硫酸铁及其改性研究

本文进行了用硫铁矿烧渣制备聚合硫酸铁(PFS)的实验研究。并在此基础上对聚合硫酸铁作了改性探索。研究表明,所得产品的总铁含量和盐基度均符合行业标准和国家标准,且对造纸工业废水的处理效果很好,其CODcr的脱除率达90%以上。该方法工艺简单,反应时间短,对环境友好,为废渣综合利用指出了一条有效途径。     

LaCoO_3对TNT废水光催化降解的实验研究

用柠檬酸络合法制备出钙钛矿型钴酸镧（LaCoO3）,研究了钙钛矿型LaCoO3对TNT炸药废水的光催化处理效果。根据废水吸光度和CODcr去除率确定了最佳反应条件,此时溶液中TNT降解率和CODcr去除率最大。pH值对反应也有较大影响。最适反应条件为LaCoO3的摩尔浓度为0．002mol／L,反应pH值为8,光照时间为60min;在该反应条件下,TNT降解率达57．8％。     

氧化混凝-生物铁法-二段生物接触氧化法处理环氧树脂废水的研究

采用氧化混凝-生物铁法-二段生物接触氧化法处理CODcr3800～10000 mg/L、Cl-浓度2 %～2.5 %的高浓度高盐分环氧树脂混合废水.研究表明采用氧化混凝预处理,分步投加硫酸亚铁,当第一次投加250 mg/L,第二投加1200 mg/L时,CODcr去除率达35 %～60 %,废水CODcr降为2500～4000 mg/L;在生物铁反应器污泥负荷达1.7 kgCODcr/(kgMLSS*d)时,CODcr去除率81.0 %;当二段生物接触氧化法水力停留时间10 h时,CODcr去除率达87.6 %,最终出水CODcr降至100 mg/L以下,达到GB8978一级排放标准.     

土地渗滤系统对造纸废水深度处理的研究

采用土地快速渗滤深度处理造纸废水,模拟土柱经10个掩埋期的生化培养,经过土地渗滤系统处理,CODcr去除率达90%左右,BOD5可达95%以上,出水达到造纸废水排放标准。     

乳化油废水处理研究

本文主要研究了对乳化油废水的处理,首先在实验室条件下研究了乳化油废水的处理,进而进行了小试,在实验和小试的基础上得出利用混凝沉淀、气浮除油和生化降解三级处理方法是完全能够处理好乳化油废水的。文中所列数据可为实际设计提供参考。     

我国有机磷农药废水处理方法的新进展

介绍了近 10年来国内有机磷农药废水治理方法的新进展 ,预处理新技术 ,传统生化法的改进以及高效菌种的开发和利用 ,并为有机磷农药废水处理方法的进一步改进提出了建议。     

Desulfurization of oil sands coke

Research done on the development of a process to desulfurize oil sands coke is described. Solvent extraction, steam treatment alone, steam treatment in the presence of sodium compounds, treatment with steam and air mixtures, hydrodesulfurization and preoxidation followed by hydrodesulfurization have been investigated. It has been found that oxidative pretreatment of oil sands coke with air at low temperatures enhances the rate of sulfur removal during the subsequent hydrodesulfurization. Up to 75% of the sulfur present in the oil sands coke can be removed by preoxidizing the coke at 530°F for eight hours followed by hydrodesulfurization with hydrogen at 1200°F for eight hours using shallow fluidized beds of –20 mesh coke particles. Yields of purified coke of approximately 56% were obtained from this process.     

焦炭及其改性吸附预处理焦化废水的试验研究

采用经化学改性前后的焦炭对焦化废水进行吸附预处理,并对其吸附性能进行了检测.结果表明,焦炭对焦化废水中的COD、挥发酚、氨氮和氰化物均有一定的去除效果,分别为相同条件下活性炭对上述污染物去除率的15.48%、16.41%、39.47%和172.84%.化学改性可使焦炭对焦化废水中氨氮和氰化物的吸附性能明显的提高,其中HNO,改性对焦炭吸附废水中氨氮和氰化物能力的增加效果显著,对氨氮的吸附常数从未改性前的0.009 7 L·mg-1增加为0.077 L·mg-1;对氰化物的吸附常数从未改性前的0.002 4 L·mg-1增加为0.073 9 L·mg-1.KOH改性对焦炭吸附废水中氰化物能力的增加效果明显,对氰化物的吸附常数从未改性前的0.002 4 L·mg-1增加为0.095 5 L·mg-1.     

油田采出水的特性及处理技术

总结了油田采出水的特性及现场采用的水处理工艺流程,比较不同处理方法的适用范围及优缺点。指出目前油田现场采出水处理存在的问题,特别是对大庆油田聚合物驱和三元复合驱采出水进行了深入分析,阐明了污水处理难度大的原因是聚合物增加污水粘度,表面活性剂使污水严重乳化,并指出处理该污水的有效途径。     

焦炭反应性及反应后热性质及其检测方法

通过焦炭反应性(CRI)和反应后强度(CSR)在模拟高炉内焦炭热性质中存在问题的分析,提出了CRI和反应后热性质(PRTP)及其检测方法,指标包括溶损反应开始温度、溶损速率、等溶损率后强度、反应后热处理性和热处理后强度. 7种高炉用焦炭的CRI和CSR及CRI-PRTP的实验研究和分析显示,几种焦炭的反应初始温度有较大差别,最大相差44℃. 焦炭D的CSR为74.1,但较高的CSR主要是其低CRI造成的,用等溶损率后强度能够更好地评定焦炭抵抗溶损劣化的能力. 焦炭A的溶损-热处理后与等溶损率后强度相比,降低幅度达到了7.1%. 研究证明,用CRI-PRTP评定焦炭热性质可行.     

Desulphurization of Athabasca petroleum coke by (a) chemical oxidation and (b) solvent extraction

This study concerns the desulphurization of petroleum coke produced by delayed coking of Athabasca bitumen. The coke contains 7.5 wt % sulphur, 99.6% of the sulphur in coke being organic and the remainder pyritic. The coke was treated both with nitric acid and by solvent extraction. During nitric acid treatment, sulphur removal was found to increase with reaction time and the concentration of nitric acid, and to decrease slightly with increase in particle size. About 30% of organic sulphur was removed from ?250 Tyler mesh coke particles by 6 N nitric acid for 4 h at 102 °C. The basic mechanism for this treatment is oxidation and solution of organic sulphur compounds by nitric acid. About 50% ash was also removed from the coke. For solvent extraction, o-chlorophenol was used. Sulphur removal was found to increase with extracting temperature and time, and to decrease with increase in particle size of coke. About 19% of the sulphur was removed from ?250 mesh coke particles by o-chlorophenol at 160 °C in 2 h. When treated consecutively with nitric acid and o-chlorophenol, about 40% of sulphur was removed from the ?250 mesh coke particles.     

壳聚糖处理含铬(Ⅵ)废液的研究

使用壳聚糖和改性壳聚糖吸附法分别处理含铬(Ⅵ)模拟废水。研究了吸附剂用量、吸附时间、废水酸度及铬(Ⅵ)离子初始浓度等对铬(Ⅵ)离子去除率的影响。并探讨不同壳聚糖的吸附效果。实验表明,Na2S改性后的壳聚糖对Cr(Ⅵ)吸附效果最为理想。该法简便,去除率高。     

Optimization of the utilization of a sub-bituminous coal in conventional and form-coking

An attempt has been made to determine the extent to which a sub-bituminous coal can be utilized in the production of coke of metallurgical quality. It was established that coke of acceptable quality can be made from blends of up to 15% low-temperature sub-bituminous char and a high-volatile, high-fluidity coal. With partial agglomeration of the blend, the char constituent can be increased to about 30%. Formcoke of metallurgical quality can be made entirely from the coal by binderless briquetting of fluidized-bed char. It was shown that the strength and abrasion resistance of the formcoke is greatly influenced by the char preparation conditions and the post-briquetting heat treatment.     

Treatment of metallurgical coke with an aqueous solution of sodium tetraborate

The effect of the out-of-furnace treatment of metallurgical coke with aqueous solutions of inorganic substances on changes in the coke reactivity index (CRI) and coke strength after reaction (CSR) was studied. It was found that the treatment of coke with an aqueous solution of sodium tetraborate (Na₂B₄O₇ · 5H₂O) exerted the greatest effect on an improvement in the qualitative characteristics (CRI and CSR). Changes in the values of CRI and CSR of metallurgical coke as functions of the concentration and amount of the solution of sodium tetraborate were studied. It was found that the greatest improvement in the values of CRI and CSR of coke was reached upon treatment with a 7.5% solution of Na₂B₄O₇ using 45 l per ton of coke. In this case, the coke hot strength increased by 18.8 rel %, whereas the reactivity index decreased by 13.2 rel %.