酸性矿山废水的处理研究

简要分析了酸性矿山废水的主要污染物及危害,叙述了几种主要的处理技术:中和法、硫化沉淀浮选法、微生物法和人工湿地,并介绍了它们的机理、特点及实验研究和工业应用情况,由此对我国的酸性矿山废水的治理技术进行了前景展望。     

车门框条滚压成形工艺及滚压线设计

以X110型车门为例,分析零件工艺性,介绍滚压成形工艺过程,强调在模具设计和制作中应注意的问题。设计由滚压、校正、滚焊和自动断料等工艺流程组成的滚压线,可作为类似滚压工艺参考。     

SBR工艺处理维生素C废水试验研究

采用颗粒污泥和普通絮体污泥SBR反应器对维生素C生产废水进行可生化性对比试验研究，结果表明，在进水CODcr为400—1800mg／L，运行周期为8h，其中曝气时间为5．5h，换水比为80％的条件下，颗粒污泥反应器CODer去除率为75-90％，污泥浓度介于6．11～8．32g／L，污泥指数为20～40mL／g.     

Efficient degradation of organic pollutants by S-NaTaO3/biochar under visible light and the photocatalytic performance of a permonosulfate-based dual-effect catalytic system

Removing large concentrations of organic pollutants from water efficiently and quickly under visible light is essential to developing photocatalytic technology and improving solar energy efficiency. This study used a simple hydrothermal method to prepare a non-metallic, S-doped NaTaO₃ (S-NTO) photocatalyst, which was then loaded onto biochar (BC) to form a S-NTO/BC composite photocatalyst. After uniform loading onto BC, the S-NTO particles transformed from cubic to spherical. The photogenerated electron-hole pair recombination probability of the composite photocatalyst was significantly lower than those of the NTO particles. The light absorption range of the catalyst was effectively widened from 310 nm UV region to visible region. In addition, a dual-effect catalytic system was constructed by introducing peroxymonosulfate (PMS) into the environment of the pollution to be degraded. The Rhodamine B, Methyl Orange, Acid Orange 7, tetracycline, and ciprofloxacin degradation efficiency at 40 mg/L reached 99.6%, 99.2%, 84.5%, 67.1%, and 70.7%, respectively, after irradiation by a 40 W lamps for 90 min. The high-efficiency visible-light catalytic activity of the dual-effect catalytic system was attributed to doping with non-metallic sulfur and loading of catalysts onto BC. The development of this dual-effect catalytic system provides new ideas for quickly and efficiently solving the problem of high-concentration organic pollution in aqueous environments, rationally and fully utilizing solar energy, and expanding the application of photocatalytic technology to practice.     

用废催化剂作原料制CIM油脂氢化催化剂

介绍用废油脂氢化催化剂作原料,回收Cu2+-Ni2+液,再用此液作原料制CIM油脂氢化催化剂的工艺流程和制作方法。结果表明:其所制成的CIM催化剂的性能与用工业硫酸铜和硫酸镍为原料制的CIM催化剂的性能相同。     

利用废渣废碱液年产3000t粒状五水偏硅酸钠工艺初步设计

介绍以铝矾土提取硫酸铝废渣和氧氯化锆副产废碱液为原料生产泡花碱 ,然后利用一次造粒法生产五水偏硅酸钠新工艺确定影响产品质量指标工艺因素。小试试验产品质量指标达到HG/T2 5 6 8- 94要求 ,工艺成本低 ,避免废碱液及废渣排放对环境的污染。     

城市污水处理厂工艺和自控系统

归纳了城市生化污水处理厂工艺、自控系统的构成和作用，具体分析了沈阳市北部污水处理厂自控系统     

预防水体黑臭的水质指标研究

水体黑臭的指标，是研究其成因，判断其黑芨科学合理地管理水体的重要内容，该文选择了与一黑臭生化过程有关的的一些参数，进行了理场和模拟试验测定研究，结果证明ＤＯ、ＢＯＤ５、硫酸还原菌数等，与水体黑臭具有较好的相关性。水体黑臭与不黑臭的临界指标为：ＣＨ－２１．５，ＤＯ＝１．８ｍｇ／Ｌ，Ｎ＝２０００个／ｍｌ，ＢＯＤ５＝１４ｍｇ／Ｌ。     

膜生物反应器与传统活性污泥工艺除污特性比较

比较了膜生物反应器（MBR）和传统活性污泥工艺（CAS）在相同运行条件下对生活污水的除污特性.结果表明,MBR系统对COD、NH3-N和TN的平均去除率比CAS分别高14.4%、51.2%和37.3%.但MBR中膜的截留使系统相对比较封闭,制约了通过排放高磷污泥的生物法除磷,除磷效率仅为32.9%,低于CAS工艺（43.0%）;将MBR与化学除磷工艺相结合,MBR系统除磷效率可达93.3%.     

运用过程分析法有效推进清洁生产

运用过程分析式清洁生产审计开展清洁生产，通过对工艺过程、作业活动的过程分析，充分查找物料流失环节及废弃物的排放点．不需过多的经济投入解决物料计量问题，不需用物料衡算方法，而且查找细致、全面、有效且易于操作，不易遗漏，更有利于企业的清洁生产。