The Application Of Biological Strengthening Technology In Polluted Surface Water

The biological strengthening technology refers to throw microorganism which have the specific function to the biological treatment system to improve the original processing system's processing affection. The microorganism which added to the biological treatment system is possible to originate from the original processing system, after the domestication, concentrates, screening, the raise reach the certain amount, may also be the extraneous source microorganism which originally does not exist, after screening, has the specific degeneration function microorganism, target-oriented elimination some material. The merit is using original water treatment facility, enhancing the water treatment scope and water treatment ability obviously, simple operation, easy to manage.Daqing has many soaks moors and wetland. It is also the petroleum, the Petrochemical industry Base. Many organic matter difficult to degraded enter to the environment, depending upon the unique artificial biological strengthening technology to process it, the construction cost to be low, the operating cost is low, the water leakage water quality is good, and the operation management convenience, simultaneously has the beautified environment function.This project chose the surface water body which has the representation, carrying on the convention and the special target analysis, through the water analysis, the surface water in Daqing according to the national surface water's standard, the target is higher than the VI kind, has not achieved the present situation use function the standard. And the pH value is very high; the alkalinity is high, serious influence water body automatic depuration ability.This research after analyzing the water quality carries on the water quality biochemistry research, definite biodegradation degree. Through using several methods separately to several water qualities to the biochemistry to conduct the experimental study, finally indicated that when water quality pH value for neutrality, the biochemistry was good, the water quality pH value above 8.5, affected the microorganism and enzyme activeness, the biochemistry next best. Showing under such pH value condition, the ordinary microorganism's function is very difficult to display.According to the above situation, we separate screening the mold mushroom spawn which can cause the polluted water body above pH8.5 to CODcr standards, and has conducted the research to its performance and the raise condition, finally screens being suitable to process pH the leaning alkalinity surface water mold mushroom spawn DBS-1#. After appraising this fungus is for the bacillus bevies, this fungus yield condition temperature 15-40,optimum temperature is 20-25℃,pH5-11,most suitable pH7. The vaccination quantity is 2%, need the oxygen, and may use many kinds of C or N source. This fungus processes the polluted surface water under the alkalinity condition, CODcr is smaller than 40mg/L. Meets the surface water quality requirements, most importantly, and through this law processing canobviously strengthen the polluted water body automatic depuration ability.