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Diversity and vertical distributions of sediment bacteria in an urban river contaminated by nutrients

Xunan YANG, Shan HUANG, Qunhe WU, Renduo ZHANG, Guangli LIU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 6,   Pages 851-859 doi: 10.1007/s11783-013-0569-1

Abstract: communities in different depths of an urban river sediment accumulated with high concentrations of nutrientsVertical distributions of bacterial operational taxonomic units (OTUs) and chemical parameters (nutrientsResults showed that concentrations of the nutrients and metals in this river sediment were higher thanubiquitously existed in the deeper sediment layers (5–27 cm) corresponding to the distributions of the nutrients

Keywords： heavy metals     nutrients     sediment profile     terminal restriction fragment length polymorphism    

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CONCENTRATIONS AND FLUXES OF DISSOLVED NUTRIENTS IN THE YANGTZE RIVER: LONG-TERM TRENDS AND ECOLOGICAL

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 4,   Pages 559-567 doi: 10.15302/J-FASE -2020344

Abstract: The data provide a comprehensive assessment of nutrients in the Yangtze River basin and their ecological

Keywords： atmospheric deposition / ecological impacts / nitrogen sources / nutrients / Yangtze delta    

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Enhanced nutrients removal from municipal wastewater through biological phosphorus removal followed by

Yandong Yang,Liang Zhang,Hedong Shao,Shujun Zhang,Pengchao Gu,Yongzhen Peng

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0911-0

Abstract: EBPR and PN/A were combined to enhance nutrients removal from municipal wastewater.biological phosphorus removal (EBPR) followed by partial nitritation-anammox (PN/A), is proposed to enhance nutrientsThis study suggests EBPR-PN/A process is feasible to enhance nutrients removal from municipal wastewater

Keywords： Phosphorus removal     Partial nitrification     Anammox     Municipal wastewater    

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Circulating fluidized bed biological reactor for nutrients removal

CUI Yubo, LIU Hongbo, BAI Chunxue

Frontiers of Environmental Science & Engineering 2008, Volume 2, Issue 3,   Pages 349-353 doi: 10.1007/s11783-008-0051-7

Abstract: A new biological nitrogen removal process, which is named herein “The circulating fluidized bed bioreactor (CFBBR)”, was developed for simultaneous removal of nitrogen and organic matter. This process was composed of an anaerobic bed (Riser), aerobic bed (Downer) and connecting device. Influent and nitrified liquid from the aerobic bed enters the anaerobic bed from the bottom of the anaerobic bed, completing the removal of nitrogen and organic matter. The system performance under the conditions of different inflow loadings and nitrified liquid recirculation rates ranging from 200% to 600% was examined. From a technical and economic point of view, the optimum nitrified liquid recirculation rate was 400%. With a shortest total retention time of 2.5 h (0.8 h in the anaerobic bed and 1.5 h in the aerobic bed) and a nitrified liquid recirculation rate of 400% based on the influent flow rate, the average removal efficiencies of total nitrogen (TN) and soluble chemical oxygen demand (SCOD) were found to be 88% and 95%, respectively. The average effluent concentrations of TN and SCOD were 3.5 mg/L and 16 mg/L, respectively. The volatile suspended solid (VSS) concentration, nitrification rate and denitrification rate in the system were less than 1.0 g/L, 0.026–0.1 g NH-N/g VSSd, and 0.016–0.074 g NO-N/g VSSd, respectively.

Keywords： soluble chemical     bioreactor     biological nitrogen     optimum nitrified     nitrogen removal    

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Effects of riparian vegetation patterns on the distribution and potential loss of soil nutrients: a case

Erhui GUO,Liding CHEN,Ranhao SUN,Zhaoming WANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 2,   Pages 279-287 doi: 10.1007/s11783-014-0667-8

Abstract: The different distributions of soil nutrients along vegetation patterns and the potential risk of nutrientof grassland-cropland and grassland-manmade lawn show that the grassland in the lower slope has more nutrients

Keywords： riparian     vegetation patterns     soil nutrient distribution     nutrient loss     management    

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Arbuscular mycorrhizal associations and the major regulators

Li XUE, Ertao WANG

Frontiers of Agricultural Science and Engineering 2020, Volume 7, Issue 3,   Pages 296-306 doi: 10.15302/J-FASE-2020347

Abstract:

Plants growing in natural soils encounter diverse biotic and abiotic stresses and have adapted with sophisticated strategies to deal with complex environments such as changing root system structure, evoking biochemical responses and recruiting microbial partners. Under selection pressure, plants and their associated microorganisms assemble into a functional entity known as a holobiont. The commonest cooperative interaction is between plant roots and arbuscular mycorrhizal (AM) fungi. About 80% of terrestrial plants can form AM symbiosis with the ancient phylum Glomeromycota. A very large network of extraradical and intraradical mycelium of AM fungi connects the underground biota and the nearby carbon and nutrient fluxes. Here, we discuss recent progress on the regulators of AM associations with plants, AM fungi and their surrounding environments, and explore further mechanistic insights.

Keywords： AM symbiosis     signal     regulators     nutrients     phosphate     microbiota    

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Different response of bacterial community to the changes of nutrients and pollutants in sediments from

Fang Zhang, Hao Zhang, Ying Yuan, Dun Liu, Chenyu Zhu, Di Zheng, Guanghe Li, Yuquan Wei, Dan Sun

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 2, doi: 10.1007/s11783-019-1207-3

Abstract: • Bacterial community varied spatially in sediments from the urban river network. • Key environmental factors shaping bacterial community were detected by RDA. • Bacterial co-occurrence networks changed at different levels of nutrient and metal. • Potential indicator species were selected to predict pollution risk in sediment. Microbial communities in sediment are an important indicator linking to environmental pollution in urban river systems. However, how the diversity and structure of bacterial communities in sediments from an urban river network respond to different environmental factors has not been well studied. The goal of this study was to understand the patterns of bacterial communities in sediments from a highly dense urbanized river network in the lower Yangtze River Delta by Illumina MiSeq sequencing. The correlations between bacterial communities, the environmental gradient and geographical distance were analyzed by redundancy analysis (RDA) and network methods. The diversity and richness of bacterial community in sediments increased from upstream to downstream consistently with the accumulation of nutrient in the urban river network. Bacterial community composition and structure showed obvious spatial changes, leading to two distinct groups, which were significantly related to the characteristics of nutrient and heavy metal in sediments. Humic substance, available nitrogen, available phosphorus, Zn, Cu, Hg and As were selected as the key environmental factors shaping the bacterial community in sediments based on RDA. The co-occurrence patterns of bacterial networks showed that positive interaction between bacterial communities increased but the connectivity among bacterial genera and stability of sediment ecosystem reduced under a higher content of nutrient and heavy metal in average. The sensitive and ubiquitous taxa with an overproportional response to key environmental factors were detected as indicator species, which provided a novel method for the prediction of the pollution risk of sediment in an urban river network.

Keywords： Sediment     Urban river network     Bacterial community     Network analysis     Indicator species    

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“NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions

Akshay Jain, Zhen He

Frontiers of Environmental Science & Engineering 2018, Volume 12, Issue 4, doi: 10.1007/s11783-018-1052-9

Abstract:

Resource recovery from wastewater is a key function of bioelectrochemical systems.

NEW resources to recover include Nutrient, Energy, and Water.

Identifying proper application niches can guide BES research and development.

More efforts should be invested to the application of recovered resources.

A mindset for energy performance and system scaling is critically important.

Keywords： Bioelectrochemical systems     Resource recovery     Wastewater treatment     Energy     Nutrients    

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Effects of previous drying of sediment on root functional traits and rhizoperformance of emerged macrophytes

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 6, doi: 10.1007/s11783-021-1427-1

Abstract:

• Sediment desiccation alters morphological characteristics of aquatic sediment.

Keywords： Fibrous-root macrophytes     Thick-root macrophytes     Nutrients removal     Wet sediment     Dried-rewetted sediment    

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Challenges of a feasible route towards sustainability in environmental protection

G. LETTINGA

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 123-134 doi: 10.1007/s11783-010-0028-1

Abstract: Anaerobic processes for treatment of low and high strength wastewaters and solid wastes constitute the core method in the natural biological mineralization (NBM) treatment concept. When adequately combined with the complementary NBM-systems and modern clean water saving practices in wastewater collection and transport, they represent a feasible route to sustainable environmental protection (EP), in essence even towards a more sustainable society. Despite the development and implementation of modern high rate Anaerobic Wastewater Treatment (AnWT-) systems and complementary innovative NBM-processes, the considerable progress made since the seventies in fundamental insights in microbiology, biochemistry and process technology, still numerous challenging improvements in the NBM-field can be realized. This contribution is mainly based on the insights attained from wide ranging literature evaluations and the results of experimental research conducted by numerous PhD students who participated in our group over the last four decades. An attempt is made here to identify major facets on which an improved insight can, and consequently should, be obtained in order to accomplish more optimal operation and design of various types of Anaerobic Degradation (AnDeg-) processes.

Keywords： anaerobic treatment     micro-aerobic treatment     natural biological mineralization concept     traces elements     macro-nutrients    

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THE 4C APPROACH AS A WAY TO UNDERSTAND SPECIES INTERACTIONS DETERMINING INTERCROPPING PRODUCTIVITY

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 3,   Pages 387-399 doi: 10.15302/J-FASE-2021414

Abstract: ., nutrients, water, space, light) than others.

Keywords： competition     complementarity     cooperation     interspecific interactions     land equivalent ratio     light     nutrients    

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Development Strategies for Utilization Models for Returning Livestock and Poultry Manure to the Land

Jia Wei,Zang Jianjun,Zhang Qiang and Li Defa

Strategic Study of CAE 2017, Volume 19, Issue 4,   Pages 130-137 doi: 10.15302/J-SSCAE-2017.04.021

Abstract: However, problems remain such as unbalanced nutrients after combining planting and livestock systems,for its return to farmland; for reasonable manure applications; for balancing nitrogen and phosphorus nutrients

Keywords： large-scale     livestock farm     manure     wastewater     combining planting and livestock systems     nutrients    

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Assessment on contaminations in sediments of an intake and the inflow canals in Taihu Lake, China

Xiaolong WANG,Shiming DING,Qi ZHANG,Weiping HU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 4,   Pages 665-674 doi: 10.1007/s11783-014-0701-x

Abstract: In the present study, we investigated the contaminations of nutrients and heavy metals in the sediments

Keywords： drinking water resource     nutrients     heavy metals     sediments     Taihu Lake    

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Nutrient status and pollution levels in five areas around a manganese mine in southern China

Kehui Liu, Xiaolu Liang, Chunming Li, Fangming Yu, Yi Li

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1279-0

Abstract: Abstract • The soil TP level was high or extremely high in all areas. • TN, OM and available Cu were insufficient in EA, TA and RA. • All areas reached the heavily polluted level and had high ecological risk levels. • Mn and Cd were the dominant pollutants. Nutrient status and pollution levels are the main factors affecting soil restoration. The nutrient status and pollution levels in five areas, an unexplored mine area (UA), an explored mine area (EA), a tailings area (TA), a reclamation area (RA) and an agricultural area (AA), around the Pingle manganese mine in Guangxi, China, were assessed in this study. The results showed that the average total phosphorus in these five areas ranged from 1.05 to 1.57 mg/kg, corresponding to grades of extremely high and high. The average total nitrogen values were 0.19, 0.69, 0.93, 1.24 and 1.67 mg/kg in EA, TA, RA, UA and AA, corresponding to grades of very low, low, medium-low, medium-high and medium-high, respectively. The average organic matter values were 12.78, 8.92, 22.77, 21.29 and 29.11 mg/kg in EA, TA, RA, UA and AA, which corresponded to grades of medium-low, low, medium-high, medium-high and medium-high, respectively. All these results indicated that the total phosphorus was sufficient in these areas, while the total nitrogen and organic matter were insufficient in EA, TA and RA. The available concentrations of Mn and Zn corresponded to the intermediate grade, while the values for Cu corresponded to the very low grade; these might be another factor restricting ecological reclamation. Contamination and ecological risk assessments based on the single contamination index, Nemerow multi-factor index and potential ecological risk index showed that the five tested areas around the Mn mine were considered heavily polluted and presented high ecological risk. Mn and Cd were the dominant pollutants.

Keywords： Ecological reclamation     Ecological risk assessment     Heavy metal     Mn mine     Soil nutrients    

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Effect of chemical dose on phosphorus removal and membrane fouling control in a UCT-MBR

Guangrong Sun, Chuanyi Zhang, Wei Li, Limei Yuan, Shilong He, Liping Wang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 1, doi: 10.1007/s11783-019-1085-8

Abstract: dosing in a University of Cape Town Membrane Bioreactor (UCT-MBR) was investigated, in terms of the nutrients

Keywords： University of Cape Town Bioreactor (UCT-MBR)     enhanced nutrients removal     aluminum sulfate    

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Title Author Date Type Operation

Diversity and vertical distributions of sediment bacteria in an urban river contaminated by nutrients

Xunan YANG, Shan HUANG, Qunhe WU, Renduo ZHANG, Guangli LIU

Journal Article

CONCENTRATIONS AND FLUXES OF DISSOLVED NUTRIENTS IN THE YANGTZE RIVER: LONG-TERM TRENDS AND ECOLOGICAL

Journal Article

Enhanced nutrients removal from municipal wastewater through biological phosphorus removal followed by

Yandong Yang,Liang Zhang,Hedong Shao,Shujun Zhang,Pengchao Gu,Yongzhen Peng

Journal Article

Circulating fluidized bed biological reactor for nutrients removal

CUI Yubo, LIU Hongbo, BAI Chunxue

Journal Article

Effects of riparian vegetation patterns on the distribution and potential loss of soil nutrients: a case

Erhui GUO,Liding CHEN,Ranhao SUN,Zhaoming WANG

Journal Article

Arbuscular mycorrhizal associations and the major regulators

Li XUE, Ertao WANG

Journal Article

Different response of bacterial community to the changes of nutrients and pollutants in sediments from

Fang Zhang, Hao Zhang, Ying Yuan, Dun Liu, Chenyu Zhu, Di Zheng, Guanghe Li, Yuquan Wei, Dan Sun

Journal Article

“NEW” resource recovery from wastewater using bioelectrochemical systems: Moving forward with functions

Akshay Jain, Zhen He

Journal Article

Effects of previous drying of sediment on root functional traits and rhizoperformance of emerged macrophytes

Journal Article

Challenges of a feasible route towards sustainability in environmental protection

G. LETTINGA

Journal Article

THE 4C APPROACH AS A WAY TO UNDERSTAND SPECIES INTERACTIONS DETERMINING INTERCROPPING PRODUCTIVITY

Journal Article

Development Strategies for Utilization Models for Returning Livestock and Poultry Manure to the Land

Jia Wei,Zang Jianjun,Zhang Qiang and Li Defa

Journal Article

Assessment on contaminations in sediments of an intake and the inflow canals in Taihu Lake, China

Xiaolong WANG,Shiming DING,Qi ZHANG,Weiping HU

Journal Article

Nutrient status and pollution levels in five areas around a manganese mine in southern China

Kehui Liu, Xiaolu Liang, Chunming Li, Fangming Yu, Yi Li

Journal Article

Effect of chemical dose on phosphorus removal and membrane fouling control in a UCT-MBR

Guangrong Sun, Chuanyi Zhang, Wei Li, Limei Yuan, Shilong He, Liping Wang

Journal Article