The Research Of Character In Biologic Ceramic Reactor And Used For Filtrated Water Deepness Disposal

As the economic development of China, the emission of industrial sewage and sanitary waste is increasing year by year, which leads to water-supply source polluted universally. At the same time, the requirement of people to a high-grade drinking water is becoming more urgent. To the water supply companies which still follow the traditional process of water treatment, the conflict between process and quality of drinking water is becoming obvious. It will be a very important work to study new technology of water treatment, which can produce safe and high-quality drinking water.Introducing biological pretreatment to water supply treatment is becoming the tendency of technical development and effective means for the treatment of slightly-polluted raw water. One of the main technologies for the treatment of slightly-polluted raw water is biologic ceramic filtrationNearly one hundred strains of bacteria are separated and purified from biologic ceramic reactor being stable operationally. At last, thirteen strains of bacteria which have the character of existing in poor nutrition and anti-chlorine are separated and identified by physiological-biochemical analysis.By comparing thirteen strains of bacteria's effect on COD removing in low temperature, it is confirm that T5,T6,T10 and T13 is dominant. Growth curve is gained by the photoelectric turbidity analysis. Then, the generation time are computed through simple equation of higher order fitted according to these growth curves. It is 2.55h,2.6h,2.12h and 2.4h separately. Four strains bacteria's genes were identified through the sequence of DNA and construction of clone tree. Some of the important abiotic factors (temperature and pH) are studied to ascertain the impact on the growth station and COD removing efficiency. The results indicate that when the temperature is low to 15℃, there is little influence on the growth station and COD removing efficiency. The optimal temperature of reaction is about 25℃. So, temperature will be not the handicap on using these bacteria at real water treatment. PH has some effect on removal efficiency. The optimal pH of growth and COD removal is neutral or a bit alkaline.