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The ability of Yarrowia lipolytica W29 immobilized by calcium alginate to degrade oil and chemical oxygen demand (COD) was examined. The degradation rules of oil and COD by immobilized cells with the cell density of 6.65 x 106 CFU/mL degraded 2000 mg/L oil and 2000 mg/L COD within 50 h at 30 degrees C (pH 7.0, 150 r/min), similarly to those of free cells,(More)
Poyang Lake is the largest fresh water lake in China. In this study, the objective was to examine the diversity of bacterial community in this environment. The phylogenetic composition of bacterioplankton communities from two sites and two dates (northern and southern sub-basins in October 2006 and in May 2007, respectively) in the water column of Poyang(More)
In this paper, chaotic control was studied for a discrete two population competition model based on T-S fuzzy system. We show that a solution to communicate ideas of fuzzy control and discrete population competition model. For the behaviour of chaotic of discrete two population competition model, a T-S fuzzy system is constructed. The stabilization(More)
Mesotrione is a herbicide used for killing annual grasses and broad-leaved weeds in maize. A recent investigation has shown that mesotrione has been detected as an organic contaminant in aquatic environments and may have a negative impact on aquatic organisms. To evaluate the eco-toxicity of mesotrione to algae, experiments focusing on photosynthetic(More)
Wetland ecosystems both constructed and natural are becoming important mitigating measures in water resource management around the world, as they have the ability to cycle and retain nutrients such as Phosphorus. However, wetland soils can function as source or sink for phosphorus depending on the quality and quantity of native phosphorus. So a soil/water(More)
A broad attention has been paid to the field ditches as the sewage interception channel for the agricultural nonpoint source pollution, however, rare studies have involved in the phosphorus migration and transformation between the ditch sediments and overlaying water, especially, from the ditch sediments to the water. The present paper aims to explore with(More)
A Pilot-scale stduy was conducted to evaluate the biological nitrogen removal performance of pig farm biogas slurry in Self-developed sequencing batch biofilm reactor. Influent and effluent samples were analyzed for COD, NH<sub>4</sub><sup>-</sup>-N, NO<sub>3</sub><sup>-</sup>-N, NO<sub>2</sub><sup>-</sup>-N, PH, dissolved oxygen and temperature. The(More)
Based on the characteristics of high COD, high ammonia and high suspended solids in livestock wastewater, a combined technology consisting of Internal Circulation (IC) anaerobic reactor and Sequencing Batch Biofilm Reactor (SBBR) was carried out. After start-up for 42 days, IC reactor could remove 80%-90% of COD with organic loading rate of 12 kg(More)
By setting up water monitoring points in Poyang Lake, water samples were collected from the points in several intervals in the research to studying the spatiotemporal characteristics of water quality and influencing factors. Based on fuzzy comprehensive theory, this paper has evaluated the water quality in Poyang Lake by using the characteristics of fuzzy(More)
By analyzing the hydrologic and water quality monitoring data of typical stations of Poyang Lake, the objectives were to describe the characteristics of water quality in water-level changes. The results indicated that: the average water level of Poyang Lake showed downward trend, further more, water level amplitude of Poyang Lake was increasing in recent(More)