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With the increase in urban population, a large number of domestic pollution discharged into water bodies, the water eutrophication, and even black-odor. Seriously affected water body paddlewheel the life and health of residents, destroyed the city's landscape, and its governance is an urgent need to solve environmental problems. Is to provide the basis paddlewheel water treatment, in particular for the development of complex microbial agent to provide a basis, this paper different from heavily polluted bodies of water and sediment in the concentration of photosynthetic bacteria, the water obtained through screening has improved paddlewheel effect 10 photosynthetic bacteria group P1, P2, P3, P4, P5, P6, P7, P8, P9, P10 and mixed flora Pm, and under aerobic and anaerobic conditions to study their effect of water purification Human paddlewheel. Anaerobic purification experiment results show that the illumination, investment amount of bacteria 1% ,28-30 ℃, 3 days after the photosynthetic bacteria P1, P2, P3, P4, P8, Pm, P9 artificial paddlewheel water CODcr, NH 3 -N, S -2 , color and smell threshold removal rates were 75.00% -82.00% 24.20% -27.97% 72.03% -87.89% 58.90% -69.08% and 75.29% -87.89%, of which the best P9 purifying effect. Light aerobic purification experiment results show that the amount of bacteria vote 1% ,28-30 ℃, 3 days after the photosynthetic bacteria P2, P3, P4, P8, P9, Pm artificial black smelly water CODcr, NH 3 < / sub>-N, S -2 , color and smell threshold removal rates were 60.67% -79.92% 35.92% -40.16% 72.03% -82.93% 58.25% -66.55% 75.29-85.09%, dissolved by a 0.54 mg / L up to 2.63mg / L. Where P2 on water color, odor and dissolved oxygen improvement is most obvious. Photosynthetic bacteria are a wide variety of classes, metabolic diversity, extensive living microorganisms in the water purification plays an important role. Its water purification and bacteria into the amount of light, temperature and other factors, if used improperly, it is difficult to achieve the desired cleaning effect. Thus, this paper artificial black smelly water, by measuring the black smelly water CODcr, smelly threshold, the threshold color changes of temperature, light, and other factors on the amount of bacteria into their laboratory screening efficient photosynthetic bacteria P9 Water effect and examine its condition at the indoor and outdoor natural black smelly water purification effect, while P9 morphological and molecular identification of black-odor water purification agents in the development and effective governance paddlewheel water bodies provide a viable means . The research shows that the advantages of photosynthetic bacteria flora P9 is palustris, the best 1% of investment amount of bacteria, temperature 30 ℃, anaerobic illumination. It was found through the indoor and outdoor water purifier, photosynthetic bacteria P9 adaptable, able to grow rapidly in the natural black smelly water and water play the role. Indoor conditions, water samples CODcr, NH 3 -N, S -2 , smelly threshold, the color threshold decreased rates were 70.58%, 30.00%, 84.12%, 75.00%, 62.12%. Outdoor conditions, water samples CODcr, NH 3 -N, color threshold decreased rates were 61.58%, 40.12%, 60.50%, dissolved oxygen increased by about 6 times.
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