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Municipal wastewater treatment in China: Development history and future perspectives

Jiuhui Qu, Hongchen Wang, Kaijun Wang, Gang Yu, Bing Ke, Han-Qing Yu, Hongqiang Ren, Xingcan Zheng, Ji Li, Wen-Wei Li, Song Gao, Hui Gong

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 6, doi: 10.1007/s11783-019-1172-x

Abstract: . • New concept municipal wastewater treatment plants are highlighted.facilities, low sustainability of the treatment processes, questionable wastewater treatment plant (WWTPseveral aspects including targets of wastewater management, policies and technologies, especially the newconcept WWTP.Furthermore, we envisage the establishment of new-generation WWTPs with the vision of turning WWTP from

Keywords： China     Wastewater treatment plant (WWTP)     Process     Management     Policy     New Concept WWTP    

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Development Concept of New Energy Vehicle Based on Innovative Thinking

Chen Qingquan, Zheng Bin

Strategic Study of CAE 2019, Volume 21, Issue 3,   Pages 70-75 doi: 10.15302/J-SSCAE-2019.03.017

Abstract:

New energy vehicles provide an important opportunity for the transformationBased on the innovative thinking that should be maintained in the development of new energy vehicles,On this basis, it is proposed that the development of new energy vehicles should be promoted by innovationIt is hoped that this study can provide strategic references for the development of new energy vehicles

Keywords： new energy vehicles     innovative thinking     development concept    

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A road-map for energy-neutral wastewater treatment plants of the future based on compact technologies (including MBBR)

Hallvard Ødegaard

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0835-0

Abstract: In the paper concepts for wastewater treatment of the future are discussed by the use of a) one flow diagram based on established, compact, proven technologies (i.e. nitrification/denitrification for N-removal in the mainstream) and b) one flow diagram based on emerging, compact technologies (i.e. de-ammonification in the main stream).The latter (b) will give an energy-neutral wastewater treatment plant, while this cannot be guaranteed for the first one (a). The example flow diagrams show plant concepts that a) minimize energy consumption by using compact biological and physical/chemical processes combined in an optimal way, for instance by using moving bed biofilm reactor (MBBR) processes for biodegradation and high-rate particle separation processes, and de-ammonification processes for N-removal and b)maximize energy (biogas) production through digestion by using wastewater treatment processes that minimize biodegradation of the sludge (prior to digestion) and pretreatment of the sludge prior to digestion by thermal hydrolysis. The treatment plant of the future should produce a water quality (for instance bathing water quality) that is sufficient for reuse of some kind (toilet flushing, urban use, irrigation etc.). The paper outlines compact water reclamation processes based on ozonation in combination with coagulation as pretreatment before ceramic membrane filtration. In the paper concepts for domestic wastewater treatment plants of the future are discussed by the use of a) one flow diagram based on established, compact, proven technologies (i.e. nitrification/denitrification for N-removal in the mainstream) and b) one flow diagram based on emerging, compact technologies (i.e. de-ammonification in the main stream).The latter (b) will give an energy-neutral wastewater treatment plant, while this cannot be guaranteed for the first one (a). The example flow diagrams show plant concepts that a) minimize energy consumption by using compact biological and physical/chemical processes combined in an optimal way, for instance by using moving bed biofilm reactor (MBBR) processes for biodegradation and high-rate particle separation processes, and de-ammonification processes for N-removal and b)maximize energy (biogas) production through digestion by using wastewater treatment processes that minimize biodegradation of the sludge (prior to digestion) and pretreatment of the sludge prior to digestion by thermal hydrolysis. The treatment plant of the future should produce a water quality (for instance bathing water quality) that is sufficient for reuse of some kind (toilet flushing, urban use, irrigation etc.). The paper outlines compact water reclamation processes based on ozonation in combination with coagulation as pretreatment before ceramic membrane filtration.

Keywords： China concept WWTP     Energy-neutrality     De-ammonification     moving bed biofilm reactor (MBBR)    

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U-shaped microRNA expression pattern could be a new concept biomarker for environmental estrogen

Rui Duan, Yun Lu, Lingyan Hou, Lina Du, Lequn Sun, Xingfan Tang

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 6, doi: 10.1007/s11783-016-0880-8

Abstract: Estrogen regulates miRNA expression in a typical U-shaped dose-response pattern. E2 can regulate in the ventral prostate. Mouse ventral prostate is most sensitive to estrogen. Nonmonotonic dose-response in prostate could be a component of estrogen signature. Many studies have focused on environmental estrogen-related diseases. However, no consistent gene markers or signatures for estrogenicity have been discovered in mammals. This study investigated the estrogenic effects of 17β-estradiol on the prostate in immature male mice. Consistent U-shaped responses were seen in bodyweight, ventral prostate epithelial morphology, and miRNA expression levels. Specifically, most estradiol regulated miRNAs were downregulated at low doses of estradiol (0.2 and 2 mg·kg ), and whose expression returned to the control level at a larger dose (200 mg·kg ). The function of these regulated miRNAs is related to the prostate cancer and PI3K-Akt signaling pathways, which is consistent with the function of estradiol. Furthermore, the miRNA-processing machinery, Drosha, in the prostate was also regulated in a similar pattern, which could be a part of the U-shaped miRNA expression mechanism. All of these data indicate that the prostate is a reliable organ for evaluating estrogenic activity and that the typical nonmonotonic dose-response relationship could be used as a novel biomarker for estrogenicity.

Keywords： miRNA     Prostate     Estradiol     Nonmonotonic dose-response     Estrogenicity     Drosha    

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New concept of design for high concrete face rockfill dams

Li Nenghui

Strategic Study of CAE 2011, Volume 13, Issue 3,   Pages 12-18

Abstract: ">Based on analysis of experimential design for concrete face rockfill dams and its imperfection, a newdesign concept of high concrete face rockfill dams which includes stability safety design, seepage safety

Keywords： concrete face rockfill dam     design concept     stability safety     seepage safety     deformation safety    

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New concept and procedure for reliability assessment of an IEC 61850 based substation and distribution

Hosein HAYATI,Amir AHADI,Seyed Mohsen MIRYOUSEFI AVAL

Frontiers in Energy 2015, Volume 9, Issue 4,   Pages 387-398 doi: 10.1007/s11708-015-0382-6

Abstract: Smart grid is a power grid consists of extensive monitoring systems which deal with the monitoring of attributes such as current, voltage, power, and energy at distribution transformers, substations transformers, distribution switching devices and smart meters. Smart grid with advanced communication technologies can be used for several purposes such as efficiency and reliability improvement. IEC 61850 is the core standard in the smart grid domain for distribution and substation automation. This paper introduces a vision of modern substation and distribution systems using the IEC 61850. Network operators mainly assume that the modern substation and distribution systems based on the IEC 61850 are reliable for a long-time of operation. However, similar to any other systems, the implemented IEC 61850 might fail because of the operational failures or aging failures. This paper proposes a novel method for reliability evaluation of modern substation and distribution systems. A typical IEC 61850 based distribution and substation system is developed and analyzed using the proposed method. The fault tree analysis (FTA) is used to quantify the reliability of the system. The technique is implemented and demonstrated on the Roy Billinton test system (RBTS). The analysis is further extended on a 400/63 kV substation with a breaker- and-a-half configuration. In addition, the technique proves to be robust under different operations. The results verify the feasibility and applicability of the proposed method.

Keywords： IEC 61850     reliability assessment     fault tree analysis    

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Metabolic hypertension: concept and practice

Zhiming Zhu, Peijian Wang, Shuangtao Ma

Frontiers of Medicine 2013, Volume 7, Issue 2,   Pages 201-206 doi: 10.1007/s11684-013-0264-4

Abstract: Due to the importance of metabolic abnormalities in the pathogenesis of hypertension, we propose a concept

Keywords： hypertension     cardiometabolic risk factors     metabolic abnormalities    

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Anensemble method for data stream classification in the presence of concept drift

Omid ABBASZADEH,Ali AMIRI,Ali Reza KHANTEYMOORI

Frontiers of Information Technology & Electronic Engineering 2015, Volume 16, Issue 12,   Pages 1059-1068 doi: 10.1631/FITEE.1400398

Abstract: features of data streams are immense volume, high production rate, limited data processing time, and data conceptIn addition, a new method is used to determine drift, which emphasizes the precision of the algorithm

Keywords： Data stream     Classificaion     Ensemble classifiers     Concept drift    

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Water-level based discrete integrated dynamic control to regulate the flow for sewer-WWTP operation

Zhengsheng Lu, Moran Wang, Mingkai Zhang, Ji Li, Ying Xu, Hanchang Shi, Yanchen Liu, Xia Huang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 3, doi: 10.1007/s11783-020-1222-4

Abstract: A model-free sewer-WWTP integrated control was proposed.upstream pumping stations and the downstream influent pumping systems of wastewater treatment plant (WWTPThis control method has been successfully applied in practical integrated operations of sewer-WWTP followingduring heavy rainfall events by increasing transport capacity of pumping station and influent flow in WWTP

Keywords： Sewer system     Integrated control     Discrete control     Water level    

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Soil health—useful terminology for communication or meaningless concept? Or both?

David S. POWLSON

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 3,   Pages 246-250 doi: 10.15302/J-FASE-2020326

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China’s Agriculture Green Development: from Concept to Actions

Frontiers of Agricultural Science and Engineering doi: 10.15302/J-FASE-2023512

Abstract:

● A target-threshold indicator evaluation system is proposed to measure China’s agriculture transformation.

Keywords： agricultural transformation     Agriculture Green Development     historical trend     indicator system     theoretical conception    

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Strategic Thinking and Suggestions on Promoting Regional Energy Revolution Based on Local Conditions

Xie Kechang

Strategic Study of CAE 2021, Volume 23, Issue 1,   Pages 1-6 doi: 10.15302/J-SSCAE-2021.01.001

Abstract:

The coordinated development of energy, economic society, and ecological environment has always been one of the major issues facing China. Although achievements have been made in some regions in China regarding the coordinated development, varied contradictions and problems still exist. Therefore, China should consider these significant differences in regional development while promoting energy revolution. This study elaborates the significance of regional energy revolution and analyzes the current status of economic society, energy, and ecological environment in the Beijing–Tianjin–Hebei region, Yangtze River Delta, Pearl River Delta, old industrial bases, the central region, energy-rich areas, and the Southwest in China. To promote the regional energy revolution, China should strengthen the top-level design for energy revolution and clarify the strategic objectives and key tasks for medium- and long-term development. A mode of well-planned and coordinated development should be established by clarifying the functions of regional energy revolution. The pilots of regional energy revolution should be promoted, thus to explore an efficient mechanism for the energy revolution. Moreover, the responsibilities of the regional governments should be clarified and an assessment and supervision mechanism should be established, so as to ensure that the regional energy revolution achieves expected effects.

Keywords： regional energy revolution     regional development differences     coordinated development     new developmentconcept    

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A New People-oriented Designing Concept on Mine Machine

Peng Youduo,Liu Deshun,Liu Fanmao,Zhang Yongzhong,He Fenghua

Strategic Study of CAE 2005, Volume 7, Issue 2,   Pages 86-90

Abstract:

In view of the traditional design concept, the main aim of which is to satisfy the mine machine's function, this article brings forward a new design idea which is based on ergonomics and satisfies

Keywords： mine machine     ergonomics     hydraulic winder    

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The main anammox-based processes, the involved microbes and the novel process concept from the application

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 7, doi: 10.1007/s11783-021-1487-1

Abstract:

• The PNA, denitratation/anammox, and DAMO/anammox process are reviewed together.

Keywords： Anammox     Nitritation     Denitratation     Denitrifying anaerobic methane oxidation     Mainstream wastewater    

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Control concept and countermeasures for shallow lakes' eutrophication in China

JIN Xiangcan, LU Shaoyong, HU Xiaozhen, JIANG Xia, WU Fengchang

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 257-266 doi: 10.1007/s11783-008-0063-3

Abstract: Research on lake eutrophication in China began in the early 1970s, and many lakes in China are now known to be in meso-eutrophic status. Lake eutrophication has been showing a rapidly increasing trend since 2000. Investigations show that the main reasons for lake eutrophication include a fragile lake background environment, excessive nutrient loading into lakes, excessive human activities, ecological degeneration, weak environmental protection awareness, and lax lake management. Major mechanisms resulting from lake eutrophication include nutrient recycling imbalance, major changes in water chemistry (pH, oxygen, and carbon), lake ecosystem imbalance, and algal prevalence in lakes. Some concepts for controlling eutrophication should be persistently proposed, including lake catchment control, combination of pollutant source control with ecological restoration, protection of three important aspects (terrestrial ecology, lake coast zone, and submerged plant), and combination of lake management with regulation. Measures to control lake eutrophication should include pollution source control (i.e., optimize industrial structural adjustments in the lake catchment, reduce nitrogen and phosphorus emission amounts, and control endogenous pollution) and lake ecological restoration (i.e. establish a zone-lake buffer region and lakeside zone, protect regional vegetation, utilize hydrophytes in renovation technology); countermeasures for lake management should include implementing water quality management, identifying environmental and lake water goals, legislating and formulating laws and regulations to protect lakes, strengthening publicity and the education of people, increasing public awareness through participation in systems and mechanic innovations, establishing lake region management institutions, and ensuring implementation of governance and management measures.

Keywords： excessive     participation     prevalence     lakeside     Research    

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Title Author Date Type Operation

Municipal wastewater treatment in China: Development history and future perspectives

Jiuhui Qu, Hongchen Wang, Kaijun Wang, Gang Yu, Bing Ke, Han-Qing Yu, Hongqiang Ren, Xingcan Zheng, Ji Li, Wen-Wei Li, Song Gao, Hui Gong

Journal Article

Development Concept of New Energy Vehicle Based on Innovative Thinking

Chen Qingquan, Zheng Bin

Journal Article

A road-map for energy-neutral wastewater treatment plants of the future based on compact technologies (including MBBR)

Hallvard Ødegaard

Journal Article

U-shaped microRNA expression pattern could be a new concept biomarker for environmental estrogen

Rui Duan, Yun Lu, Lingyan Hou, Lina Du, Lequn Sun, Xingfan Tang

Journal Article

New concept of design for high concrete face rockfill dams

Li Nenghui

Journal Article

New concept and procedure for reliability assessment of an IEC 61850 based substation and distribution

Hosein HAYATI,Amir AHADI,Seyed Mohsen MIRYOUSEFI AVAL

Journal Article

Metabolic hypertension: concept and practice

Zhiming Zhu, Peijian Wang, Shuangtao Ma

Journal Article

Anensemble method for data stream classification in the presence of concept drift

Omid ABBASZADEH,Ali AMIRI,Ali Reza KHANTEYMOORI

Journal Article

Water-level based discrete integrated dynamic control to regulate the flow for sewer-WWTP operation

Zhengsheng Lu, Moran Wang, Mingkai Zhang, Ji Li, Ying Xu, Hanchang Shi, Yanchen Liu, Xia Huang

Journal Article

Soil health—useful terminology for communication or meaningless concept? Or both?

David S. POWLSON

Journal Article

China’s Agriculture Green Development: from Concept to Actions

Journal Article

Strategic Thinking and Suggestions on Promoting Regional Energy Revolution Based on Local Conditions

Xie Kechang

Journal Article

A New People-oriented Designing Concept on Mine Machine

Peng Youduo,Liu Deshun,Liu Fanmao,Zhang Yongzhong,He Fenghua

Journal Article

The main anammox-based processes, the involved microbes and the novel process concept from the application

Journal Article

Control concept and countermeasures for shallow lakes' eutrophication in China

JIN Xiangcan, LU Shaoyong, HU Xiaozhen, JIANG Xia, WU Fengchang

Journal Article