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Pilot scale experiments were carried out to find the principle of potassium permanganate composite (PPC) pre oxidation enhanced coagulation for pollutants removal in low turbidity surface water during low temperature season. The results showed that significant enhanced coagulation effect can be achieved with PPC pre-oxidation. Furthermore, the small molecule organics were analyzed in this research...
Laboratory continuous flow-through riverbank filtration (RBF) models were developed to study the organic substances and ammonia nitrogen removal efficiency in the riverbank filtration process. The results indicated that the priority pollutants, organic substances and ammonia nitrogen, could be removed to a great extent. The results also indicate that the quality of the Huai River water is acceptable...
Base on the previous study of organic substances and ammonia nitrogen removal efficiency through laboratory continuous flow-through riverbank filtration (RBF) models, field study were carried out to evaluate the results drawn from small model experiments. Five wells were selected to in this riverbank filtration process field study. The results indicated that the priority pollutants, organic substances...
Experiments were conducted for enhancing organic pollutants and turbidity removal of polluted raw water by potassium permanganate composite (PPC). The effect of oxidants' dosing point on pollutants removal efficiency were discussed. The results indicated that PPC adding after rapid mixing period in coagulation process would cause positive effect.
Saving water resource is one important part of environmental regulation. While water availability has been decreasing all over the world, rainwater utilization has been suggested to promote water resource saving. Tianjin, China, faces the same problem of lack of freshwater resource. Rainwater utilization is one effective measure to solve this problem. In this paper, the characteristics of rainwater...
An in-situ image acquisition and analysis system was developed to characterize the dynamics of particle size distribution (PSD) during flocculation. The system consisted of a flocculator coupled with an external flow-through cell for observation and photography, a microscopic charge-coupled device video recorder with backlighting, and an image analyzer. This non-intrusive side-stream setup was used...
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