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101.
通过在一个百万吨级化学浆厂进行废水的中试试验,研究了回用预处理工艺和反渗透运行效果,探讨了反渗透浓水的处理方法,表明制浆废水膜法回用技术上可行。 相似文献
102.
Li Li Guokai Yan Haiyan Wang Zhaosheng Chu Zewen Li Yu Ling Tong Wu 《环境科学学报(英文版)》2019,31(10):133-143
In this study,raw Arundo donax(A.donax)pieces were applied as carbon source and biofilm carriers for denitrification in a lab-scale moving bed biofilm reactor(MBBR)for the treatment of reverse osmosis concentrate gathered from local wastewater reuse plant.At stable phase(about 60 days),efficient denitrification performance was obtained with73.2%±19.5%NO_(3-)~-N average removal and 8.10±3.45 g N/(m~3·day)NO_(3-)~-N average volumetric removal rate.Mass balance analysis showed that 4.84 g A.donax was required to remove 1 g TN.Quantitative real-time PCR analysis results showed that the copy numbers of 16S r-RNA,narG,nirS,nosZ and anammox gene of carrier biofilm and suspended activated sludge in the declination phase(BF2 and AS2)were lower than those of samples in the stable phase(BF1 and AS1),and relatively higher copy numbers of nirS and nirK genes with lower abundance of narG and nosZ genes were observed.High-throughput sequencing analysis was conducted for BF2 and AS2,and similar dominant phyla and classes with different abundance were obtained.The class Gammaproteobacteria affiliated with the phylum Proteobacteria was the most dominant microbial community in both BF2(52.6%)and AS2(41.7%).The PICRUSt prediction results indicated that 33 predictive specific genes were related to denitrification process,and the relative abundance of 18 predictive specific genes in BF2 were higher than those in AS2. 相似文献
103.
以垃圾渗滤液为阳极液,系统研究了汲取液种类和浓度对正渗透微生物燃料电池(OsMFC)工艺处理垃圾渗滤液性能的影响.结果表明,在汲取液为氯化钠的情况下,OsMFC工艺的最大功率密度可达0.44 W·m~(-2),表观内阻为236.75Ω,水通量为0.98 L·m~(-2)·h~(-1),TOC、NH_4~+-N、TN和TP的去除率分别达到89.51%、93.27%、94.01%和96.95%,均好于碳酸氢钠和碳酸氢铵作为汲取液时的处理效果.此外,氯化钠汲取液浓度越大,产电性能越好,表观内阻越小,水通量越大.产电性能随汲取液浓度的增大变化不大,在汲取液浓度为1 mol·L~(-1)的情况下,水通量和盐返混量的比值最大,处理效果最好. 相似文献
104.
生活垃圾焚烧飞灰水洗液中氯离子的去除研究 总被引:1,自引:0,他引:1
开展了生活垃圾焚烧飞灰水洗液处理的实验研究,先通过加入氢氧化钙(Ca(OH)_2)、偏铝酸钠(NaAlO_2)初步去除水洗液中的Cl~-,再利用反渗透膜分离技术,探究了浓淡比、操作压力、pH、Cl~-浓度对Cl~-去除效果的影响.结果表明,化学沉淀法初步处理能去除水洗液中约50%的Cl~-,膜分离对经初步处理水洗液中Cl~-的去除率高达93.5%.经过两级处理后,飞灰水洗液中Cl~-的去除率高达96.74%,Cl~-的含量满足排放标准的要求. 相似文献
105.
基于三维扫描的服装面积因子测评 总被引:1,自引:0,他引:1
李青 《中国个体防护装备》2011,(5):37-41
为计算服装面积因子,引入先进的三维扫描技术,分别扫描裸体和着装下的人体,获取点云数据。本文创建应用逆向工程软件Rapidform2006修复重建人体模型的合理流程,分别用现有的像素替代方法和新引进的逆向工程软件方法计算服装面积因子。实践证明,使用逆向工程软件重建人体模型,直接获得面积数值与现有的像素替代法间没有显著性差异,但是能大幅度减少测评周期。 相似文献
106.
初步建立 了滤袋 室内声压 分布 的数 学 模型 ,并 利用 实 测结 果对 此 数学 模型 进 行了 检验 ,证明所建 立的模 型是合理 的。可以 利用此模 型计算 滤袋室内 的声 压分 布,并 确定 喇叭 的安 装个 数和安装位 置 相似文献
107.
108.
ZHANG Yejian YAN Li QIAO Xiangli CHI Lin NIU Xiangjun MEI Zhijian ZHANG Zhenjia 《环境科学学报(英文版)》2008,20(5):558-564
Palm oil industry is the most important agro-industry in Malaysia, but its by-product–palm oil mill e uent (POME), posed a great
threat to water environment. In the past decades, several treatment and disposal methods have been proposed and investigated to
solve this problem. A two-stage pilot-scale plant was designed and constructed for POME treatment. Anaerobic digestion and aerobic
biodegradation constituted the first biological stage, while ultrafiltration (UF) and reverse osmosis (RO) membrane units were combined
as the second membrane separation stage. In the anaerobic expanded granular sludge bed (EGSB) reactor, about 43% organic matter
in POME was converted into biogas, and COD reduction e ciency reached 93% and 22% in EGSB and the following aerobic reactor,
respectively.With the treatment in the first biological stage, suspended solids and oil also decreased to a low degree. All these alleviated
the membrane fouling and prolonged the membrane life. In the membrane process unit, almost all the suspended solids were captured
by UF membranes, while RO membrane excluded most of the dissolved solids or inorganic salts from RO permeate. After the whole
treatment processes, organic matter in POME expressed by BOD and COD was removed almost thoroughly. Suspended solids and
color were not detectable in RO permeate any more, and mineral elements only existed in trace amount (except for K and Na). The
high-quality e uent was crystal clear and could be used as the boiler feed water. 相似文献
109.
ZHANG Yejian YAN Li QIAO Xiangli CHI Lina NIU Xiangjun MEI Zhijian ZHANG Zhenjia 《环境科学学报(英文版)》2008,20(5)
Palm oil industry is the most important agro-industry in Malaysia, but its by-product-palm oil mill effluent (POME), posed a great threat to water environment. In the past decades, several treatment and disposal methods have been proposed and investigated to solve this problem. A two-stage pilot-scale plant was designed and constructed for POME treatment. Anaerobic digestion and aerobic biodegradation constituted the first biological stage, while ultrafiltration (UF) and reverse osmosis (RO) membrane units were combined as the second membrane separation stage. In the anaerobic expanded granular sludge bed (EGSB) reactor, about 43% organic matter in POME was converted into biogas, and COD reduction efficiency reached 93% and 22% in EGSB and the following aerobic reactor, respectively. With the treatment in the first biological stage, suspended solids and oil also decreased to a low degree. All these alleviated the membrane fouling and prolonged the membrane life. In the membrane process unit, almost all the suspended solids were captured by UF membranes, while RO membrane excluded most of the dissolved solids or inorganic salts from RO permeate. After the whole treatment processes, organic matter in POME expressed by BOD and COD was removed almost thoroughly. Suspended solids and color were not detectable in RO permeate any more, and mineral elements only existed in trace amount (except for K and Na). The high-quality effluent was crystal clear and could be used as the boiler feed water. 相似文献
110.