Influence of the wastewater composition on denitrification and biological P-removal in the S-DN-P process： （c） Dissolved and undissolved substrates

The denitrification and P-removal in the sorption-denitrification-P-removal (S-DN-P) process were carried out under various wastewater compositions. It is noted that P-removal largely depends on the wastewater composition as well to the quantity of the substrates present in wastewater fraction. Three different wastewater fractions are obtained as: raw wastewater, dissolved wastewater (obtained with filtration using 0.45 μm filter), and undissolved wastewater (i.e., infiltrate obtained by above filtration). ...     

高效无囊过滤器在热电厂水处理中的应用

结合吉林油田热电厂YN-高效过滤器存在的问题,将YN-高效过滤器改造成Gxw-高效无囊过滤器,解决了原系统存在的生水处理能力小、出水浊度大、过滤设备反洗自用水量大的问题,保证了生水系统及后续水处理设备的正常运行,且节水、节能,效益显著。     

Evaluation of a cost e ective technique for treating aquaculture water discharge using Lolium perenne Lam as a biofilter

Wastewater stabilization ponds generate low cost by-products that are useful for agriculture. The utilization of these by-products for soil amendment and as a source of nutrients for plants requires a high level of sanitation and stabilization of the organic matter, to maintain acceptable levels of soil, water and air quality. In this study, two aquaculture wastewater treatment systems; recirculating system and a floating plant bed system were designed to improve the quality of irrigation water in local communities with low income. In both systems the grass species Lolium perenne Lam was used as a plant biofilter while vegetable specie Amaranthus viridis was used to evaluate the performance of the system and the suitability of the phyto-treated water for irrigation. It was found that the harmful material removal rate for recirculating system was 88.9% for TAN （total ammonia nitrogen）, 90% for NO2--N, 64.8% for NO3--N while for floating plant bed system 82.7% for TAN, 82% for NO2--N and 60.5% for NO3--N. Comparative analysis of the efficiency of waste element removal between the two systems revealed that both systems performed well, however, plant growth was not robust for floating plant bed system while recirculating system is energy consuming. Although both systems did not attain sufficient levels of TN （total nitrogen） and TP （total phosphorus） load reduction, the treatment with L. perenne remarkably improved the irrigation water quality. A. viridis plants irrigated with the phyto-treated discharge water had lesser concentrations of heavy metals in their tissues compared to those irrigated with untreated discharge. The control plants irrigated with untreated discharge were also found to be highly lignified with few stems and small leaves.     

科技潮流

新工艺研发过滤器可用于海水淡化 英国科学家开发出一种名为“集合渗透震动”的新方法来制造多孔纳米材料,可大大提高制造效率,在水资源过滤、发光设备制造和化学传感器等方面具有广阔应用前景。在实验中,辅料被陷落在主材料的成分中,产生了一系列微小爆裂,由此和外界连通而释放出被包在其中的辅料成分,给主材料打开许多小孔。     

Investigation of factors on a fungal biofilter to treat waste gas with ethyl mercaptan

IntroductionOff gasescontainingVOCandodorsmaydogreatharmtoenvironmentandpeople’shealth .Therearemanymethodsfortreatingthem ,suchasphysicalmethods ,chemicalmethodsandbiologicalmethods.Biologicalmethodsarewidelyappliedintheprocessofoff gasespurificationfor…     

热电厂循环冷却排污水旁流过滤脱盐处理工艺

将热电厂循环冷却排污水进行旁流过滤脱盐处理,既可以提高循环冷却水的浓缩倍数,改善循环冷却水的运行工况,又可以减少排污水量和新鲜补水用量,提高电厂水利用率。该处理工艺由两级过滤、反渗透脱盐、加药等部分组成,处理后再生水达到循环冷却水补水的水质标准。     

鸡粪卫生无害化处理技术研究

利用2级厌氧处理实验,为中小型养鸡场的鸡粪处理提供了一种处理工艺和新的一体化装置,特别研究了鸡粪卫生无害化处理方法.实验在HRT为3.01 d,有机负荷7.85kg COD/m3·d的条件下,COD去除率达到了75.77%,COD产气率0.381 m3/kg COD·d,出水卫生指标符合国标要求.     

城市污水处理厂二级出水深度处理回用的设计与运行

将城市污水作为工业循环冷却补充水的水源已成为世界各国解决缺水问题的主要方案之一,但二级出水水质不符合循环冷却水对CODCr、硬度、氮、磷等指标要求,必须对其进行深度处理才能回用。本设计采用生物接触氧化+絮凝沉淀+机械搅拌澄清+连续动态过滤+消毒工艺,其出水补充至电厂循环冷却水系统。运行实践表明,该工艺处理效率高,动力消耗少,出水水质达到循环冷却水水质标准,且经过对工艺的改进完善,使操作更加简便,设备运行更加稳定。     

一种氨纶印染废水零排放回用处理方法

该发明公开了一种氨纶印染废水零排放回用处理方法。具体为一种利用膜过滤技术实现氨纶印染废水零排放回用的处理方法。氨纶印染废水经热交换器后进人原水调节池,稳定水质和水量,调节pH至3～11,将余热进行回收;将已稳定水质和水量及调节pH的原水调节池的出水通过盘式过滤器,将盘式过滤器的反冲洗出水回流至原水调节池,盘式过滤器排出的废水进入连续膜过滤超滤系统进行过滤,将超滤系统的浓缩液和反冲洗水回流至盘式过滤器;连续膜过滤超滤系统的出水进入反渗透系统,     

远程视频监控系统中网络通信模块的设计

针对远程视频监控系统需要将多个现场视频数据方便、高效地通过计算机网络传送到多台监控主机上的要求,文章介绍了一种基于过滤器技术的远程视频监控系统网络通信模块的设计,并详细阐述了网络通信模块中网络过滤器以及组播传输方式的实现方法.该通信模块在实际应用中效果良好.