Abstract
This project is about to design a water supply plant.But the water resource is polluted,the content of nitrogen and phosphorus in the resource water is higher than the standard level.So,the process of the water treating is different from the traditional one.We chose biological contact oxidation process as the pretreatment,this treatment can dislodge the nitrogen and phosphorus in the water.
So the main process of the water treatment is biological contact oxidation;coagulation;sediment; filter and disinfect.The treatment of the sludge water is to reuse the water and the mud cake is used to embed.So the process of the treatment of the sludge water is regulate,concentrate and dehydration.
Key word:polluted;biological contact oxidation;sludge water;reuse