Huangpu River is about 114.5 km from upriver Dianfeng to downriver Wusong, near the estuary of the Yangtze River. It plays a key role in supplying water for production, life, shipment and irrigation. With the industri...Huangpu River is about 114.5 km from upriver Dianfeng to downriver Wusong, near the estuary of the Yangtze River. It plays a key role in supplying water for production, life, shipment and irrigation. With the industrial development, the pollution of the Huangpu River has become serious recently. The biological oxygen demand （BOD）, total nitrogen （TN）, total phosphorus （TP）, oil, phenol and suspended solids （SS） were lower in the upstream sites than in the downstream sites, indicating pollutants being input along its course. Water quality was the worst in the Yangpu site, near the center of Shanghai City. Dissolved oxygen （DO） content was less than 2 mg/L in the site of Yangpu in July. Among relations between thirteen characteristics, relations between BOD, DO, TN, TP, NH4^＋ -N, NO3^- -N and the count of total bacteria or Escherichia coli were significant and interdependent. Inner relationships between these main characteristics in the Huangpu River were studied. High nutrient concentration led to growth of microorganisms, including E. coli. Degradation of organic matters and respiration of bacteria made oxygen concentration decreased in the water body, and DO was a key factor for nitrification-denitrification process of nitrogen. In the Yangpu site, DO was decreased to less than 3.0 mg/L with BOD higher than 7.5 mg/L in May and July. Low DO concentration will decrease nitrification rate. Nitrification need at higher DO value than other organic substrate oxidation. Consequently, river water contains low NO3^- -N values with high amounts of TN and NH4^＋ -N there. This will block the self-purification of surface water, by decreasing the rate of nitrification-denitrification transformation process in the water body.展开更多
Oil contaminated soil was collected from Huangpu River-Yangtze River estuary wetland, with the aim of isolating oil-degrading microorganisms and evaluating their ability to degrade diesel. Three bacterial strains were...Oil contaminated soil was collected from Huangpu River-Yangtze River estuary wetland, with the aim of isolating oil-degrading microorganisms and evaluating their ability to degrade diesel. Three bacterial strains were discovered and identified by sequencing their 16S rDNA genes, two were Pseudomonas and one was Alcaligcnes. The proper growth conditions of each bacterium were measured and presented for diesel biodegradation. Biodegradation assays revealed that the degradation rates of three bacterial strains were 42.5%, 14.6% and 15.9% in 7 d respectively. They all play an important role on the nalkanes within the range of C16-C25 components of diesel. The results indicated that the oil-degraders can adapt to degrade diesel. The bacterial strains can be used in wetland diesel pollution control.展开更多
Shanghai Electrical Machinery Manufacturing Works (abbr, SEMMW), a comprehensive electrical machinery manufacturing works with a modern production scale, is the first rank large stateowned works, which is one of the 5...Shanghai Electrical Machinery Manufacturing Works (abbr, SEMMW), a comprehensive electrical machinery manufacturing works with a modern production scale, is the first rank large stateowned works, which is one of the 500 largest industrial enterprises in China and in the first place of China’s power station equipment manufacturing industry. It is a hightechnology enterprise of Shanghai,展开更多
On the day of December 1st,world-famous lingerie enterprise Embryform Group made big celebrations for its 35-year anniversary starting with a grand lingerie show under the theme of"Miracle of the Body",film ...On the day of December 1st,world-famous lingerie enterprise Embryform Group made big celebrations for its 35-year anniversary starting with a grand lingerie show under the theme of"Miracle of the Body",film star Li Bingbing,famous anchor Shenxing,together with展开更多
Based on numerical computation model RMA2 and RMA4 with open source code,finite element meshes representing the study domain are created, then the finite elementhydrodynamic and water quality model for Huangpu River i...Based on numerical computation model RMA2 and RMA4 with open source code,finite element meshes representing the study domain are created, then the finite elementhydrodynamic and water quality model for Huangpu River is developed and calibrated, and thesimulation results are analyzed. This developed hydrodynamic and water quality model is used toanalyze the influence of discharged wastewater from planning Wastwater Treatment Plant (WWTP) onHuangpu River's water quality.展开更多
基金Propject supported by the Special Environmental Protection Development Foundation of Shanghai,China (No.00980014).
文摘Huangpu River is about 114.5 km from upriver Dianfeng to downriver Wusong, near the estuary of the Yangtze River. It plays a key role in supplying water for production, life, shipment and irrigation. With the industrial development, the pollution of the Huangpu River has become serious recently. The biological oxygen demand （BOD）, total nitrogen （TN）, total phosphorus （TP）, oil, phenol and suspended solids （SS） were lower in the upstream sites than in the downstream sites, indicating pollutants being input along its course. Water quality was the worst in the Yangpu site, near the center of Shanghai City. Dissolved oxygen （DO） content was less than 2 mg/L in the site of Yangpu in July. Among relations between thirteen characteristics, relations between BOD, DO, TN, TP, NH4^＋ -N, NO3^- -N and the count of total bacteria or Escherichia coli were significant and interdependent. Inner relationships between these main characteristics in the Huangpu River were studied. High nutrient concentration led to growth of microorganisms, including E. coli. Degradation of organic matters and respiration of bacteria made oxygen concentration decreased in the water body, and DO was a key factor for nitrification-denitrification process of nitrogen. In the Yangpu site, DO was decreased to less than 3.0 mg/L with BOD higher than 7.5 mg/L in May and July. Low DO concentration will decrease nitrification rate. Nitrification need at higher DO value than other organic substrate oxidation. Consequently, river water contains low NO3^- -N values with high amounts of TN and NH4^＋ -N there. This will block the self-purification of surface water, by decreasing the rate of nitrification-denitrification transformation process in the water body.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.40973073,40830744)the Shanghai Leading Academic Discipline Project(Grant No.S30109)the Innovation Foundation of Shanghai University
文摘Oil contaminated soil was collected from Huangpu River-Yangtze River estuary wetland, with the aim of isolating oil-degrading microorganisms and evaluating their ability to degrade diesel. Three bacterial strains were discovered and identified by sequencing their 16S rDNA genes, two were Pseudomonas and one was Alcaligcnes. The proper growth conditions of each bacterium were measured and presented for diesel biodegradation. Biodegradation assays revealed that the degradation rates of three bacterial strains were 42.5%, 14.6% and 15.9% in 7 d respectively. They all play an important role on the nalkanes within the range of C16-C25 components of diesel. The results indicated that the oil-degraders can adapt to degrade diesel. The bacterial strains can be used in wetland diesel pollution control.
文摘Shanghai Electrical Machinery Manufacturing Works (abbr, SEMMW), a comprehensive electrical machinery manufacturing works with a modern production scale, is the first rank large stateowned works, which is one of the 500 largest industrial enterprises in China and in the first place of China’s power station equipment manufacturing industry. It is a hightechnology enterprise of Shanghai,
文摘On the day of December 1st,world-famous lingerie enterprise Embryform Group made big celebrations for its 35-year anniversary starting with a grand lingerie show under the theme of"Miracle of the Body",film star Li Bingbing,famous anchor Shenxing,together with
文摘Based on numerical computation model RMA2 and RMA4 with open source code,finite element meshes representing the study domain are created, then the finite elementhydrodynamic and water quality model for Huangpu River is developed and calibrated, and thesimulation results are analyzed. This developed hydrodynamic and water quality model is used toanalyze the influence of discharged wastewater from planning Wastwater Treatment Plant (WWTP) onHuangpu River's water quality.
