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In this paper the design and realisation of an integrated online water quality monitoring system will be described. The system has been applied specifically to monitor the DO (Dissolved Oxygen) and pH parameters in several shrimp aquaculture centersin Indonesia. The aim was to reduce energy consumption and to create optimumwater condition for the shrimp aquaculture.Using an automatic aeration system,...
Growing population and rapid economic development lead to increasing pollution loading and lowering water quality. Protection of water environments is our glory target; The key strategy is: combining management of the land-water system in catchment and realizing the quasi-non-pollution release in an as small as possible catchment area.”; developing the high technology for realizing this target in...
Water quality maintenance is always a focus in a fishpond in order to achieve a high harvest and good scenery. A wetland fishpond in Yingdong Village on Chongming Island, Shanghai has been studied. Through a 2D modeling analysis it is found that the water diversion from the neighboring Yangtze River is feasible and effective. The diversion can be conducted once every 2 months to achieve the desirable...
Degradation of water quality is the major health concern for lakes and reservoirs in the regions of north china as a result of highly diverse non-point source emissions caused by human activities. For describing the dynamic response between emission loads and receiving water conditions factually, model systems have became the typically decision support tools during the reservoir management strategy...
This paper reports a new method of using nonmaterial to improve the quality of water. The results showed that wastewater treated by nanomaterial was improved greatly while the water transparency increased and the contents of chemical oxygen demand(COD), total phosphorus(TP), total nitrogen (TN), nitrate nitrogen and nitrite nitrogen decreased, in which the removal rate of TN was 97% , the content...
Cumulative impacts of productive enterprises are an increasingly serious problem in coastal areas. By analyzing the industrial structure during the last few decades in Dalian, China, we conclude there are five main sources of cumulative impacts: industrial enterprises, domestic sewage, agriculture, coastal engineering and marine aquaculture. According to the cumulative ecological effect causation...
In inland districts, fishponds cultured products are the main source of aquatic products in the market. Site selection is a key factor for environmental construction and aquatic products safety. This study makes use of the water quality and pollution source gained through determining, investigating, and integrating geographic information system (GIS) and multi-objective decision analysis to ensure...
Phoslock, a novel modified bentonite, was developed by CSIRO. With the innovative principle both on Soluble Phosphate (SP) removal and sediment capping, Phoslock has great efficiency in SP removal, normally 95%, and effective capacity to sediment capping of the bottom slurry for avoiding the nutrient release. From the applications in Australia, China and South Africa, Phoslock demonstrated exciting...
In this paper, we studied the spatial and temporal change of water quality in Lake Honghu based on long-term monitoring data (1973-2006). Quantitative studies of the relationship between enclosure culture and water quality in lakes were conducted, through analysis of water quality changes in the whole progress of enclosure culture, and comparisons of water quality in enclosure culture area with other...
Water quality monitoring plays an important role in modern intensive fish farming management. In order to improve the efficiency and precision of the data collection procedure, it is necessary to have an automated monitoring system that collects environmental data, especially to record long-term and up-to-the-minute environmental fluctuations. The purpose of this research was to design a remote-controlled,...
The water quality is the most vital factor in a successfully healthy aquaculture. After investigation by 415 fish disease cases and experiments, it is found that eutrophication and the pollutants of NH3, H2S as well as heavy metals and organic compounds are the main reasons of inducing fish disease in the north of China. Generally speaking, an early warning system for fish disease based on water management...
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