改性大豆皮吸附剂对Pb2+的生物吸附性能研究

Using soybean hull residue after the soluble dietary fiber being removed during the soybean processing industry as crude material, a novel absorbent modified soybean hulls is prepared. Its adsorption behavior for Pb2+ is studied. The adsorbent has a large and efficient adsorpuon capacity for Pb-, uv to 20% of the mass of dry adsorbent. Its maximum adsorption capacity for Pb2+ reaches 217 mg.g-1 at initial Pb2+ concentration of 2000 mg.L-1,which is twice that of yeast absorbent and threefold greater than that of chitosan absorbent. The adsorption ability is sensitive to pH value in the solution and the optimal pH for adsorption of Pb2+is 7.0. In the presence of other metal ions (Ca2+, Mg2+and Na+) in the solution, their effect on the adsorption capacity for Pb2+is not obvious. After 5 cycles of adsorption, 80% adsorption capacity of Pb2+ is maintained. Compared with various available commercial resins, the modified soybean hulls are a plentiful, inexpensive and effective medium for the capture of dissolved Pb2+ from waste streams.     

高浓度超稠油乳化废水预处理工艺与实践

超稠油在加工过程中产生大量高浓度乳化废水,常规炼油污水处理场难以处理并导致外排水严重超标.以某稠油加工企业高浓度超稠油乳化废水为研究对象,对其物理化学性质,沉降、破乳、絮凝条件进行了系统研究,并在大量试验的基础上开发出预处理工艺.相应装置建成后运行平稳高效,废水得到高效的处理与污油资源回收.     

水产品加工废水深度处理的试验

进行了用"生物接触氧化-微滤膜"组合工艺对水产品加工废水深度处理的试验研究.试验结果表明:在进水COD约900~1 200 ms/L,水力停留时间>16 h的情况下,平均出水COD<50 ms/t,达到再生水杂用水质标准.同时,研究探讨了处理过程中膜组件的污染及清洗问题,为实际工程中膜的运行提供了必要的参考.     

化学沉淀法处理含氨氮废水的研究

本文通过试验研究了化学沉淀法处理含氨氮废水的工艺条件,介绍了废水处理过程中遇到的问题以及解决办法,为化学沉淀法处理氨氮废水提供了基础研究资料。     

处理污水时膜污染问题的试验研究

根据膜生物反应器中膜污染的几种类型,分析了膜污染形成机理及影响因素,并总结了几种防止和处理膜污染的方法。     

Multi-electrode microbial fuel cell (MEMFC): A close analysis towards large scale system architecture

Microbial fuel cells are capable of producing electricity through the treatment of wastewater, however, the low power density poses main hurdles towards their wide application. In present work, microbial fuel cell based on multiple anodes, acting as baffle is constructed for achieving higher performance which can be scaled up for real life application. It is investigated for continuous sixty two days using distillery wastewater (WW) in three batches under ambient condition. During first batch, the WW is maintained under stagnant condition inside the anode chamber where as in the rest of the two batches WW is recirculated in the chamber. A maximum power density 427 mW m⁻², is achieved under stagnant condition which is further enhanced to 597 mW m⁻² under recirculation mode. Recirculation of WW reduces the internal resistance arising from the mass transfer by 50%. Maximum COD removal and Coulombic efficiency obtained is 43% and 23%. Biofouling on the surface of the membrane facing anode chamber is observed.     

Fenton法＋活性炭吸附处理苯海因生产废水的研究

苯海因生产废水中CODcr、挥发酚等污染物浓度都比较高,采用三级Fenton＋活性炭吸附处理后,CODcr、挥发酚均能达到国家一级排放标准。     

磷胺废水处理工艺的设计初探

某磷胺废水呈酸性(pH2~3),含氟化物60mg/L,总磷40mg/L,氨氮约40mg/L,SS约130mg/L,综合处理后的出水要求为氟化物<10mg/L,总磷<0.5mg/L。设计针对该废水特性,先采用石灰水解酸化,去除NH3-N和P,接着采用絮凝与气浮去除悬浮物和部分的COD,最后采用活性Al2O3吸附水中残留物,出水可望达标。技术经济分析,投资总费用为483.1万元,按流量150m3/h,处理成本为0.67元/m3,设计工艺可靠且经济合理。     

MBR工艺技术在工业废水处理的应用

文章重点阐述了MBR工艺类型、工艺优势、影响因素、运行管理、在工业废水处理中的应用,并对今后的研究方向进行了展望。