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Upgrade of three municipal wastewater treatment lagoons using a high surface area media

John WANG, Peng JIN, Paul L. BISHOP, Fuzhi LI

《环境科学与工程前沿（英文）》 2012年 第6卷 第2期   页码 288-293 doi: 10.1007/s11783-011-0280-z

摘要： Lagoon-based municipal wastewater treatment plants (WWTPs) are facing difficulties meeting the needs of rapid population growth as well as the more stringent requirements of discharge permits. Three municipal WWTPs were modified using a high surface area media with upgraded fine-bubble aeration systems. Performance data collected showed very promising results in terms of five-day biochemical oxygen demand (BOD ), ammonia (NH ) and total suspended solids (TSS) removal. Two-year average ammonia effluents were 4.1 mg·L for Columbia WWTP, 4 mg·L for Larchmont WWTP and 2.1 mg·L for Laurelville WWTP, respectively. Two- year average BOD effluents were 6.8, 4.9 and 2.7 mg·L , and TSS effluents were 15.0, 9.6 and 7.5 mg·L . The systems also showed low fecal coliform (FC) levels in their effluents.

关键词： wastewater lagoons     wastewater biological treatment     ammonia removal     high surface area media     fine bubble aeration    

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Genotoxicity evaluation of surface waters located in urban area of Xi’an City using

Yongjun LIU, Aining ZHANG, Xiaoyan MA, Xiaochang WANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第6期   页码 860-866 doi: 10.1007/s11783-012-0462-3

摘要： In this study, micronucleus (MCN) and chromosome aberration (CA) tests in root tip cells were carried out in order to assess the water quality and the comprehensive genotoxic potential of surface waters located in the urban area of Xi’an City, China. For these evaluations, water samples from different surface waters (four rivers, two lakes, two biological treatment plant effluents) were collected, the ultra-pure water and methyl methanesulfonate solution was used as the negative and positive control, respectively. In our results, highly significant differences in MCN permillage (average number of micronuclei per 1000 cells), CA frequencies and PI (pollution index) values were found among three rivers and two WWTP effluents, the tested samples from two rivers caused the decrease of mitotic index over 22% compared with the negative control. No significant changes were observed in micronuclei and chromosome aberrations frequencies at one river and two lakes during the period of test (wet season). These results point out a poor state of the water quality and genotoxic activity of the main surface waters in Xi’an City. It is recommended to establish a monitoring program for the presence of genotoxic agents in these surface waters.

关键词： genotoxicity     surface water     evaluation     Vicia faba    

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Cell surface protein engineering for high-performance whole-cell catalysts

Hajime Nakatani,Katsutoshi Hori

《化学科学与工程前沿（英文）》 2017年 第11卷 第1期   页码 46-57 doi: 10.1007/s11705-017-1609-3

摘要： Cell surface protein engineering facilitated by accumulation of information on genome and protein structure involves heterologous production and modification of cell surface proteins using genetic engineering, and is important for the development of high-performance whole-cell catalysts. In this field, cell surface display is a major technology by exposing target proteins, such as enzymes, on the cell surface using a carrier protein. The target proteins are fused to the carrier proteins that transport and tether them to the cell surface, as well as to a secretion signal. This paper reviews cell surface display systems for prokaryotic and eukaryotic cells from the perspective of carrier proteins, which determine the number of displayed molecules, and the localization, size, and direction ( or terminal anchoring) of the passengers. We also discuss advanced methods for displaying multiple enzymes and a new method for the immobilization of whole-cell catalysts using adhesive surface proteins.

关键词： cell surface engineering     surface display     whole-cell catalysts     bioprocess    

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Perfluorocarboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFASs) in surface and tap water around

Yong QIU, He JING, Hanchang SHI,

《环境科学与工程前沿（英文）》 2010年 第4卷 第3期   页码 301-310 doi: 10.1007/s11783-010-0236-8

摘要： Perfluorinated compounds (PFCs) are ubiquitously distributed in the environment mainly as perfluoro-carboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFASs). In this paper, six PFCAs and two PFASs were quantified in surface and tap water samples from 12 sites around Lake Taihu near Shanghai City in East China. Predominant PFCs were perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS), of which the concentration ranges were 6.8–206 and 1.2–45 ng·L, the geometric means were 35.3 and 9.4 ng·L, and the median (quartile range) values were 31.4 (34.4) and 10.4 (10.7) ng·L, respectively. Other PFCs were also detected but in much lower concentrations than PFOA. The sources of the PFCs were expected to be direct industrial discharges in the Lake Taihu area, and this area was also a possible source of PFCs contaminations in Shanghai district in the downstream. PFCs distributions were found different in the upstream, downstream and north part of Lake Taihu. Occurrences of PFCs in the tap water in Lake Taihu area indicated their exposure to the local people. A brief estimation of the environmental risks by PFCs implied no acute or immediate risks from PFCs to local human health, but chronic risks from PFOA in the tap water should be considered in the downstream regions.

关键词： surface and tap water     perfluorocarboxylic acids (PFCAs)     perfluoroalkyl sulfonates (PFASs)     Lake Taihu area     ultra performance liquid chromatography with tandem mass spectrometry (UPLC-MS)    

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Modeling agricultural non-point source pollution in a high-precipitation coastal area of China

Zhiyi LI,Pengfei DU,Haiwei HUANG,Yong Ge,Xu LI

《环境科学与工程前沿（英文）》 2014年 第8卷 第6期   页码 922-928 doi: 10.1007/s11783-014-0720-7

摘要： Non-point source (NPS) pollution simulation in the high-precipitation coastal areas of China is difficult because varying annual typhoon incidence leads to highly contrasting rainfall patterns in dry years and wet years. An IMPULSE (Integrated Model of Non-point Sources Pollution Processes) based NPS model of the Changtan Reservoir watershed, which is a typical high-precipitation coastal area in China, was established based on the analysis of point and NPS pollution data, a digital elevation model, and data on land-use, soil, meteorology, economy, and agricultural management practice. Pre-processed pre-rainfall soil moisture levels were introduced during the simulation to model the effects of typhoons on hydrology. Rainfall events were simulated sequentially through the year and the model was calibrated and verified using hydrological and water quality data. Accuracy of the simulated rainfall runoff and water quality in the Changtan watershed was found to be acceptable. The study showed that the NPS modeling system could be applied to the simulation and prediction of NPS loadings in the Changtan Reservoir watershed.

关键词： Changtan Reservoir watershed     non-point source pollution modeling     pre-rainfall soil moisture     model calibration    

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Preparation of a novel anion exchange group modified hyper-crosslinked resin for the effective adsorption of both tetracycline and humic acid

Qing ZHOU, Mengqiao WANG, Aimin LI, Chendong SHUANG, Mancheng ZHANG, Xiaohan LIU, Liuyan WU

《环境科学与工程前沿（英文）》 2013年 第7卷 第3期   页码 412-419 doi: 10.1007/s11783-013-0483-6

摘要： A novel hyper-crosslinked resin (MENQ) modified with an anion exchange group was prepared using divinylbenzene (DVB) and methyl acrylate (MA) as comonomers via four steps: suspension polymerization, post-crosslinking, ammonolysis and alkylation reactions. The obtained resin had both a high specific surface area (793.34 m ·g ) and a large exchange capacity (strong base anion exchange capacity, SEC: 0.74 mmol·g , weak base anion exchange capacity, WEC: 0.45 mmol·g ). XAD-4 was selected as an adsorbent for comparison to investigate the adsorption behavior of tetracycline (TC) and humic acid (HA) onto the adsorbents. The results revealed that MENQ could effectively remove both TC and HA. The adsorption capacity of XAD-4 for TC was similar to that of MENQ, but XAD-4 exhibited poor performance for the adsorption of HA. The adsorption isotherms of TC and HA were well-fitted with the Freundlich model, which indicated the existence of heterogeneous adsorption through cation-π bonding and π–π interactions. The optimal solution condition for the adsorption of TC was at a pH of 5–6, whereas the adsorption of HA was enhanced with increasing pH of the solution.

关键词： high surface area     adsorption     anion exchange     micropollutant     dissolved organic matters    

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Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor

《环境科学与工程前沿（英文）》 2021年 第15卷 第4期 doi: 10.1007/s11783-020-1371-5

摘要：

• Real ML-GFW with high salinity and high organics was degraded by O3/H2O2 process.

关键词： High salinity     High organic matters     Gas field wastewater     O3/H2O2     Response surface methodology    

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Prediction on CO

Kaiwen HUANG, Ao LI, Bing XIA, Tao DING

《结构与土木工程前沿（英文）》 2020年 第14卷 第3期   页码 746-759 doi: 10.1007/s11709-020-0635-2

摘要： Carbonation of concrete is a process which absorbs carbon dioxide (CO ). Recycled aggregate concrete (RAC) may own greater potential in CO uptake due to the faster carbonation rate than natural aggregate concrete (NAC). A quantitative model was employed to predict the CO uptake of RAC in this study. The carbonation of RAC and the specific surface area of recycled coarse aggregates (RCAs) were tested to verify accuracy of the quantitative model. Based on the verified model, results show that the CO uptake capacity increases with the increase of RCA replacement percentage. The CO uptake amount of 1 m C30 RAC within 50 years is 10.6, 13.8, 17.2, and 22.4 kg when the RCA replacement percentage is 30%, 50%, 70%, and 100%, respectively. The CO uptake by RCAs is remarkable and reaches 35.8%–64.3% of the total CO uptake by RAC when the RCA storage time being 30 days. Considering the fact that the amount of old hardened cement paste in RCAs is limited, there is an upper limit for the CO uptake of RCAs.

关键词： RAC     CO2 uptake     carbonation     specific surface area     RCA    

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主动源在高频被动源面波测量中的应用 Article

程逢,夏江海,沈超,胡悦,徐宗博,宓彬彬

《工程（英文）》 2018年 第4卷 第5期   页码 685-693 doi: 10.1016/j.eng.2018.08.003

摘要： 我们称其为“混合源面波”（mixed-source surface-wave，MSW）测量。在记录的时间序列中分别应用了空间自相关（spatial autocorrelation，SPAC）法与基于互相关的被动源面波多道分析方法（multichannel analysis of passive surface

关键词： 被动源面波     主动源面波     高频     混合源面波     空间自相关     被动源面波多道分析    

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以“区域协同”推动秦巴山区更高质量发展的对策建议

孙志燕,施戍杰

《中国工程科学》 2020年 第22卷 第1期   页码 25-31 doi: 10.15302/J-SSCAE-2020.01.004

摘要：

秦巴山区是我国11 个连片贫困区之一且生态价值极为突出，区域实现更高质量发展具有重要意义。本文在系统调研区域内地级市经济社会发展情况的基础上，重点对环秦巴山区域不同发展水平的城市空间相关性、产业结构的相似度进行定量分析。结果表明，区域内中心城市的辐射带动作用较弱，与贫困落后地区尚未形成联动发展；区域内产业高度同质化成为制约内生经济增长动力的瓶颈因素；基于行政区的发展模式使得区域的生态屏障功能被过度“碎片化”，导致区域生态环境压力加大。建议着眼于秦巴山脉生态系统的整体性，转变发展理念，突破一地一域的行政限制和条块分割，加强国家层面的顶层设计和战略引导，以“协同”为核心来推动区域更高质量发展。

关键词： 秦巴山区     区域协同     高质量发展     生态资产    

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Significant enhancement in catalytic ozonationefficacy: From granular to super-fine powdered activated carbon

Tianyi Chen, Wancong Gu, Gen Li, Qiuying Wang, Peng Liang, Xiaoyuan Zhang, Xia Huang

《环境科学与工程前沿（英文）》 2018年 第12卷 第1期 doi: 10.1007/s11783-018-1022-2

摘要： In this study, super-fine powdered activated carbon (SPAC) hasbeen proposed and investigated as a novel catalyst for the catalyticozonation of oxalate for the first time. SPAC was prepared from commercialgranular activated carbon (GAC) by ball milling. SPAC exhibited highexternal surface area with a far greater member of meso- and macropores(563% increase in volume). The catalytic performances of activatedcarbons (ACs) of 8 sizes were compared and the rate constant for pseudofirst-order total organic carbon removal increased from 0.012 min to 0.568 min (47-fold increase) withthe decrease in size of AC from 20 to 40 mesh (863 mm) to SPAC (~1.0 mm). Furthermore, the diffusion resistance of SPAC decreased17-fold compared with GAC. The ratio of oxalate degradation by surfacereaction increased by 57%. The rate of transformationof ozone to radicals by SPAC was 330 times that of GAC. The resultssuggest that a series of changes stimulated by ball milling, includinga larger ratio of external surface area, less diffusion resistance,significant surface reaction and potential oxidized surface all contributedto enhancing catalytic ozonation performance. This study demonstratedthat SPAC is a simple and effective catalyst for enhancing catalyticozonation efficacy.

关键词： Super-fine activated carbon     Catalytic ozonation     External surface area     Surface reaction     Hydroxyl radical    

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中国近海油气勘探进展

朱伟林

《中国工程科学》 2010年 第12卷 第5期   页码 18-24

摘要：

近年来，中国近海的油气勘探坚持以寻找大中型油气田为指导思想，以区域研究为基础，以科学合理部署为保证，针对中国近海独特的油气地质特征，通过创新认识和技术进步，坚持走高效勘探之路，取得了丰硕成果，新发现储量屡创历史新高，步入了历史上最好时期。然而，随着勘探程度的提高和勘探领域的拓展，中国近海油气勘探也面临越来越多的挑战。

关键词： 中国近海     大中型油气田     高效勘探     挑战    

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基于高速交通网络的秦巴山脉地区空间格局研究

武廷海,张能

《中国工程科学》 2016年 第18卷 第5期   页码 52-59 doi: 10.15302/J-SSCAE-2016.05.008

摘要：

改善通达性是秦巴山脉地区扶贫开发和实现可持续发展的重要手段。本文根据《国家公路网规划(2013年—2030年)》与《中长期铁路网规划》中确定的高速交通网络，研究秦巴山脉地区及周边城市群地区中心城市的可达性，进而模拟秦巴山脉地区的空间格局。研究发现，随着国家规划高速交通网络的建设，秦巴山脉地区将形成以西安为中心的西安—万州、西安—襄阳、西安—洛阳三条放射型主要城市走廊，以及西安—天水、西安—广元、达州—襄阳—南阳—洛阳三条次要城市走廊。受其城市走廊的影响，秦巴山脉地区将形成以陇南、巴中、十堰、栾川为核心的四个巨型绿野。本文建议，未来的秦巴山脉地区空间规划，在努力发挥秦巴山脉地区对周边城市群地区生态平衡作用的同时，要自觉建立秦巴山脉地区内部的空间秩序，合理安排城市走廊与巨型绿野，实现保护与发展的平衡。

关键词： 秦巴山脉地区     空间格局     高速交通网络     空间规划     城市走廊     巨型绿野    

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高强度合金抗疲劳应用技术研究与发展

越振业

《中国工程科学》 2005年 第7卷 第3期   页码 90-94

摘要：

评述了超高强度钢、高强度A1合金和Ti合金表面完整性抗疲劳应用技术的研究和发展。高强度合金疲劳性能对应力集中敏感，不适当的加工工艺和切削热等造成的表面损伤和髙拉应力使其疲劳和应力腐蚀性能损失殆尽。先进的表面完整性加工尤其是表面改性可显著提高疲劳性能，如激光冲击使7475-T761拉-拉疲劳寿命提高约89%，7075-T6裂纹扩展速率降低到原来的1/1500;超声喷丸使超高强度钢低周疲劳强度提高约50%，Ti7A14Mo合金髙周疲劳强度提高约15%;表面超硬化可使Vasco X-2M齿轮钢接触疲劳寿命提高30～35倍等。

关键词： 高强度合金     表面完整性     激光冲击     表面超硬化    

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A review on high performance photovoltaic cells and strategies for improving their efficiency

Muni Raj MAURYA, John-John CABIBIHAN, Kishor Kumar SADASIVUNI, Kalim DESHMUKH

《能源前沿（英文）》 2022年 第16卷 第4期   页码 548-580 doi: 10.1007/s11708-022-0826-8

摘要： The introduction of a practical solar cell by Bell Laboratory, which had an efficiency of approximately 6%, signified photovoltaic technology as a potentially viable energy source. Continuous efforts have been made to increase power conversion efficiency (PCE). In the present review, the advances made in solar cells (SCs) are summarized. Material and device engineering are described for achieving enhanced light absorption, electrical properties, stability and higher PCE in SCs. The strategies in materials and coating techniques for large area deposition are further elaborated, which is expected to be helpful for realizing high-efficiency SCs. The methods of light-harvesting in SCs via anti-reflecting coatings, surface texturing, patterned growth of nanostructure, and plasmonics are discussed. Moreover, progress in mechanical methods that are used for sun tracking are elaborated. The assistance of the above two protocols in maximizing the power output of SCs are discussed in detail. Finally, further research efforts needed to overcome roadblocks in commercialization were highlighted and perspectives on the future development of this rapidly advancing field are offered.

关键词： photovoltaic     efficiency     large area deposition     light harvesting     sun tracker    

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标题 作者 时间 类型 操作

Upgrade of three municipal wastewater treatment lagoons using a high surface area media

John WANG, Peng JIN, Paul L. BISHOP, Fuzhi LI

期刊论文

Genotoxicity evaluation of surface waters located in urban area of Xi’an City using

Yongjun LIU, Aining ZHANG, Xiaoyan MA, Xiaochang WANG

期刊论文

Cell surface protein engineering for high-performance whole-cell catalysts

Hajime Nakatani,Katsutoshi Hori

期刊论文

Perfluorocarboxylic acids (PFCAs) and perfluoroalkyl sulfonates (PFASs) in surface and tap water around

Yong QIU, He JING, Hanchang SHI,

期刊论文

Modeling agricultural non-point source pollution in a high-precipitation coastal area of China

Zhiyi LI,Pengfei DU,Haiwei HUANG,Yong Ge,Xu LI

期刊论文

Preparation of a novel anion exchange group modified hyper-crosslinked resin for the effective adsorption of both tetracycline and humic acid

Qing ZHOU, Mengqiao WANG, Aimin LI, Chendong SHUANG, Mancheng ZHANG, Xiaohan LIU, Liuyan WU

期刊论文

Optimization of the O/HO process with response surface methodology for pretreatment of mother liquor

期刊论文

Prediction on CO

Kaiwen HUANG, Ao LI, Bing XIA, Tao DING

期刊论文

主动源在高频被动源面波测量中的应用

程逢,夏江海,沈超,胡悦,徐宗博,宓彬彬

期刊论文

以“区域协同”推动秦巴山区更高质量发展的对策建议

孙志燕,施戍杰

期刊论文

Significant enhancement in catalytic ozonationefficacy: From granular to super-fine powdered activated carbon

Tianyi Chen, Wancong Gu, Gen Li, Qiuying Wang, Peng Liang, Xiaoyuan Zhang, Xia Huang

期刊论文

中国近海油气勘探进展

朱伟林

期刊论文

基于高速交通网络的秦巴山脉地区空间格局研究

武廷海,张能

期刊论文

高强度合金抗疲劳应用技术研究与发展

越振业

期刊论文

A review on high performance photovoltaic cells and strategies for improving their efficiency

Muni Raj MAURYA, John-John CABIBIHAN, Kishor Kumar SADASIVUNI, Kalim DESHMUKH

期刊论文