煤矸石在炼油废水中的应用现状

概述了石油化工行业中炼油废水的危害与常用处理方法,介绍了煤矸石在炼油废水处理中的应用情况,利用煤矸石基吸附剂处理炼油废水不仅降低了煤矸石对环境的污染,而且降低了炼油废水的处理成本,实现以废治废。最后提出了煤矸石在炼油废水处理应用中所存在的一些问题以及未来研究方向。     

农林生物质在含铬废水处理中的应用

农林生物质作为低成本吸附剂在环境污染治理中日益受到重视。综述了农林生物质在含铬废水处理中的应用研究进展,分析了生物质处理含铬废水的机理、影响因素,指出了生物质法处理含铬废水的发展方向。     

农林生物质在含铬废水处理中的应用

农林生物质作为低成本吸附剂在环境污染治理中日益受到重视。综述了农林生物质在含铬废水处理中的应用研究进展，分析了生物质处理含铬废水的机理、影响因素，指出了生物质法处理含铬废水的发展方向。     

海泡石复合吸附剂在含磷废水处理中的应用

首先研究了海泡石复合吸附剂的制备,然后利用所研制的复合吸附剂至含磷废水进行了吸附处理。结果表明,此复合吸附剂能较好地吸附废水中的磷,磷的去除率在９８％以上。此吸附剂还可再生利用,具有在定的工业实用价值。     

铁酸锰纳米材料吸附含Ni~(2+)电镀废水的性能研究

采用非表面活性剂水热法制备了铁酸锰(MnFe2O4)纳米材料吸附剂,研究了吸附时间、溶液pH和温度对MnFe2O4纳米材料吸附模拟含Ni 2+电镀废水和实际含Ni 2+电镀废水中重金属Ni 2+的吸附性能,并探讨了该材料的再生利用性能。结果表明,MnFe2O4纳米材料可有效吸附电镀废水中的Ni 2+,吸附平衡时间为600min。对20mg/L的模拟含Ni 2+电镀废水,投加4.5mg的的MnFe2O4纳米材料进行吸附处理,Ni 2+的吸附去除率高达98%左右;实际工程应用中,应保持电镀废水偏碱性、温度25℃;MnFe2O4纳米材料具有理想的再生利用性能,重复吸附5次后,吸附去除率仍可达82.24%,在实际废水处理中具有广阔的应用前景。     

廉价吸附剂处理重金属离子废水的研究进展

随着现代工业的迅速发展,生产过程中排出的有害重金属离子废水日益增加.寻找较为廉价的废水净化材料,对其中有害重金属离子的有效处理已成为环境保护中亟待解决的问题.廉价吸附剂的使用取代了目前成本较高的从溶液中回收重金属离子的方法,同时吸附剂改性会大大提高其吸附量.阐述了壳聚糖、海泡石、膨润土、海藻和泥炭等结构组成、吸附和离子交换性能等,报道廉价吸附剂对一些重金属离子的最大吸附量是:796 mg Pb/g壳聚糖,1123 mg Hg/g壳聚糖,92 mg Cr(Ⅲ)/g壳聚糖,76 mg Cr(Ⅲ)/g泥炭,41 mg Pb/g膨润土,558 mg Cd/g壳聚糖,215 mg Cd/g海藻.由此展现了廉价吸附剂在重金属离子废水处理过程中的巨大优势和良好的发展前景.     

廉价吸附剂处理重金属离子废水的研究进展

随着现代工业的迅速发展，生产过程中排出的有害重金属离子废水日益增加。寻找较为廉价的废水净化材料，对其中有害重金属离子的有效处理已成为环境保护中亟待解决的问题。廉价吸附剂的使用取代了目前成本较高的从溶液中回收重金属离子的方法，同时吸附剂改性会大大提高其吸附量。阐述了壳聚糖、海泡石、膨润土、海藻和泥炭等结构组成、吸附和离子交换性能等，报道廉价吸附剂对一些重金属离子的最大吸附量是：796mgPb／g壳聚糖，1123mgHg／g壳聚糖。92mgcr（Ⅲ）／g壳聚糖，76mgCr（Ⅲ）／g泥炭，41mgPb／g膨润土，558mgCd／g壳聚糖，215mgCd／g海藻。由此展现了廉价吸附剂在重金属离子废水处理过程中的巨大优势和良好的发展前景。     

尾矿吸附模拟废水中磷的初步研究

利用尾矿为吸附剂,模拟了其对废水中磷的去除效果.结果表明,焙烧可以明显提高尾矿对模拟废水中磷的吸附,而尾矿投加量、接触时间、pH,反应温度均是影响吸附的重要因素.热活化尾矿对磷的吸附与Langmuir、 Freundlich等温方程式的拟合程度均较高,在碱性条件下,对初始质量浓度为50mg/L的模拟含磷废水,磷的去除率可达96%以上.此外,由于尾矿具有特殊的层状结构和化学活性成分,特别是热活化尾矿,对模拟废水中的磷是较好的吸附剂,可用于去除废水中磷,是尾矿作为吸附剂去除实际废水中磷的重要基础.     

焦化废水处理技术的应用与研究进展

焦化废水是一种典型的难降解有机废水。介绍了生物法、化学法、物化法和循环利用等 4类焦化废水处理技术的优缺点及应用和研究进展 ,可供焦化废水处理工艺技术选择和开发研究参考     

泡沫混凝土对模拟氨氮废水的吸附

氨氮废水的大量排放导致水体污染严重,如何寻求一种简单、高效的氨氮废水处理方法显得尤为重要。以泡沫混凝土作为氨氮吸附剂,通过静态吸附模拟氨氮废水实验,探索了不同建筑材料、吸附剂用量、pH值、温度和时间等因素对氨氮吸附效果的影响。实验结果表明,泡沫混凝土对氨氮有较好的吸附性能,在泡沫混凝土投加量为40.0 g·L~(-1)、pH值为8.38、温度为25℃、时间为90 min时,对于质量-体积浓度为100 mg·L~(-1)氨氮废水,氨氮的去除率达59.19%,吸附量为1.479 9 mg·g~(-1)。等温吸附表明,泡沫混凝土对氨氮的吸附符合Freundlich等温方程,对氨氮的吸附属于良性吸附;动力学吸附实验结果与准二级动力学方程拟合更好,表明泡沫混凝土对氨氮的吸附符合准二级动力学。     

水杨酸生产废水的治理与资源化

采用新型超高交联吸附树脂NDA 80 0吸附法处理水杨酸生产废水 ,试验结果表明 ,NDA 80 0超高交联吸附树脂对水杨酸生产废水有良好的处理效果。当进水CODCr值约 2 0 0 0 0mg/L ,苯酚和水杨酸含量分别为 6 0 0 0mg/L和 130 0mg/L左右时 ,经过NDA 80 0树脂一级吸附处理 ,出水的CODCr、苯酚等污染指标均可达到排放标准 ,同时实现了水杨酸生产废水中苯酚和水杨酸等化工资源的生产回用     

The reuse of biosludge as an adsorbent from a petrochemical wastewater treatment plant

Biosludge was obtained from a petrochemical industry's biological wastewater treatment plant. Zinc chloride (ZnCl2) was used as a sludge activation agent during the pyrolytic process. Scanning electron microscope (SEM) image photographs, element composition, surface functional group, and pore structure were analyzed for the sludge adsorbent characteristics. Results indicated the proper ZnCl2-immersed concentration, pyrolytic temperature, and time could produce adsorbent from the biosludge. The optimal conditions for a larger surface area adsorbent were 3 M ZnCl2-immersed sludge pyrolyzed at 600 degrees C for 30 min and washed with 3 N hydrochloric acid (HCl) solution and distilled water. The predominant pore size of the sludge adsorbent was the mesopore.     

Reduction of greenhouse gases from anaerobic piggery wastewater treatment by bromochloromethane in Taiwan

This work establishes methods of reducing the amount of methane produced from the anaerobic treatment of piggery wastewater by either reducing the storage time before solid/liquid separation or inhibiting the activity of methanogens in anaerobic wastewater treatment system. Experimental results showed these two methods can be adopted effectively to reduce methane production resulting from anaerobic piggery wastewater treatment. First, the wastewater must be processed using solid/liquid separation immediately after washing pig houses. This process can reduce by 62% the biogas production and indirectly decrease the methane production from the anaerobic wastewater treatment reactor. Second, adding 10 mg L(-1) bromochloromethane (BCM) daily into the anaerobic wastewater treatment reactor can significantly reduce the amount of biogas and methane produced during the anaerobic fermentation process. Furthermore, biogas production can be completely inhibited after 4 days. Adding BCM (< or =10 mg L(-1)) to wastewater only slightly affected the efficiency of the anaerobic wastewater treatment process. Results in this study can provide the basis for further research on reduction of the amount of methane produced from anaerobic wastewater treatments.     

离子液体负载型分子筛的制备及对染料的吸附

为了有效地处理活性黑染料废水,对离子液体负载型分子筛去除水中的活性黑染料进行了研究。首先制备了离子液体负载型吸附材料,分别考察了分散剂种类、离子液体加入量、浸渍时间3种因素对离子液体负载率的影响,确定负载工艺条件为:二氯甲烷作为分散剂、[OMim]BF4离子液体与分子筛质量比1∶2,浸渍时间12 h。其次研究了负载型吸附材料对染料废水的处理效果,考察了吸附材料添加量、溶液pH值、吸附时间对模拟废水活性黑染料去除率的影响,确定吸附工艺条件为:[OMim]BF4离子液体为最佳离子液体、吸附材料添加量0.40 g、pH=6、吸附时间12 h。在此最佳工艺条件下,染料去除率达98.23%。     

Reduction of Greenhouse Gases from Anaerobic Piggery Wastewater Treatment by Bromochloromethane in Taiwan

Abstract

This work establishes methods of reducing the amount of methane produced from the anaerobic treatment of piggery wastewater by either reducing the storage time before solid/liquid separation or inhibiting the activity of methanogens in anaerobic wastewater treatment system. Experimental results showed these two methods can be adopted effectively to reduce methane production resulting from anaerobic piggery wastewater treatment. First, the wastewater must be processed using solid/liquid separation immediately after washing pig houses. This process can reduce by 62% the biogas production and indirectly decrease the methane production from the anaerobic wastewater treatment reactor. Second, adding 10 mg L^?1 bromochloromethane (BCM) daily into the anaerobic wastewater treatment reactor can significantly reduce the amount of biogas and methane produced during the anaerobic fermentation process. Furthermore, biogas production can be completely inhibited after 4 days. Adding BCM (≤10 mg L^?1) to wastewater only slightly affected the efficiency of the anaerobic wastewater treatment process. Results in this study can provide the basis for further research on reduction of the amount of methane produced from anaerobic wastewater treatments.     

The Reuse of Biosludge as an Adsorbent from a Petrochemical Wastewater Treatment Plant

Abstract

Biosludge was obtained from a petrochemical industry’s biological wastewater treatment plant. Zinc chloride (ZnCl₂) was used as a sludge activation agent during the pyrolytic process. Scanning electron microscope (SEM) image photographs, element composition, surface functional group, and pore structure were analyzed for the sludge adsorbent characteristics. Results indicated the proper ZnCl₂-immersed concentration, pyrolytic temperature, and time could produce adsorbent from the bio-sludge. The optimal conditions for a larger surface area adsorbent were 3 M ZnCl₂-immersed sludge pyrolyzed at 600 °C for 30 min and washed with 3 N hydrochloric acid (HCl) solution and distilled water. The predominant pore size of the sludge adsorbent was the mesopore.     

循环经济理念下的城市污水处理浅析

随着城市化和现代化进程的推进,污水回用处理技术问题困扰着城市的可持续发展,并影响着水资源的再生回用和可持续发展。文中以循环经济思想理念为基础,叙述了中国水环境的现状、国内外污水资源的研究进展、循环经济的含义以及在循环经济观念下的污水处理新思路,探求了城市污水处理的重要性,以变废水负价值的被动处理,转变为盈价值的资源化与经济化利用,形成新的经济增长点,实现环境效益、经济效益和社会效益的高度统一,真正实现可持续发展。     

氮肥厂废水综合治理工程实践

通过工程实例，阐述了提高水资源的综合利用率和推行清洁生产的具体措施。     

Recovery of astaxanthin from seafood wastewater utilizing fish scales waste

The paper presents basic data on astaxanthin adsorption from fisheries wastewater to fish scales. This process has been proposed to be applicable in fisheries and shrimp waste management [Helgason, Recovery of compounds using a natural adsorbent, Patent WO 01/77230, 2001]. The innovative feature of the method is the application of a solid waste (fish scales) as a natural adsorbent for a carotenoid pigment (astaxanthin) from the seafood industry wastewater. The model investigations were performed with pure synthetic carotenoids to exclude the role of matrix in which astaxanthin is present in the wastewater. Under the experimental conditions used, the maximum loading capacity of astaxanthin onto the scales is 360 mg kg(-1) dry wt. Studies of the thus formed value added product indicated that drying causes significant loss of astaxanthin activity. Due to the effective filtration characteristics of the studied sorption material, we suggest the scale/astaxanthin sorption process to be suitable for treatment of wastewater from different industries.     

响应面分析法优化造纸污泥吸附剂除磷工艺

以造纸厂废水污泥为原料,采用微波加热法制备造纸污泥吸附剂。利用制备的造纸污泥吸附剂对模拟含磷废水进行了吸附研究,探讨了吸附时间、投加量、pH值、转速和温度等因素对除磷效果的影响,并采用响应面设计法优化吸附工艺条件。结果表明,获得了最佳除磷工艺条件为吸附时间97 min,投加量6.9 g/L,pH=6,转速200 r/min,温度30℃,在此条件下磷的去除率可达99%以上。因此,造纸污泥吸附剂对磷的吸附效果良好,具有重要的实际应用价值。