155results about "Water treatment temperature conditions" patented technology

The invention relates to a high-concentration organic wastewater direct deep purification method. The method specifically comprises the following steps: (1) reinforced precipitation treatment; (2) rapid filtration of suspended matter precipitates; (3) pH value regulation; (4) hydrolysis and acidification: wastewater with the regulated pH value enters a water distribution unit, and a biofilm colonization packing material is arranged in the water distribution unit to reinforce the anaerobic hydrolysis and acidification effect of the wastewater; and (5) biological filter bed treatment. By providing a combined process composed of constructing a water distribution bed, an air distribution bed and an air-water backwashing bed of a biological filter bed, arranging a biological filter bed temperature regulation and control system, and combining the biological filter bed with a reinforced precipitation unit, a suspended matter precipitate rapid filtration unit and other units, the invention proposes a rapid low-cost treatment method for high-concentration high ammonia-nitrogen organic wastewater.

The invention discloses a segmented water inlet multistage anoxic / aerobic biological denitrification treatment method for sewage at a low temperature. The method adopts a continuous flow operation mode, sewage enters a first-stage A / O reaction unit and a second-stage A / O reaction unit from two position points after being subjected to first-stage treatment, the effluent of a water outlet end of thefirst-stage A / O reaction unit is lifted and refluxed to a water inlet end of the first-stage A / O reaction unit, the effluent of a water outlet end of the second-stage A / O reaction unit is lifted andrefluxed to a water inlet end of the second-stage A / O reaction unit, and the effluent from a water outlet end of the third-stage A / O reaction unit is clarified and separated and finally discharged. According to the method, a sewage treatment mode of two-stage water feeding and three-stage anoxic / aerobic combined reaction zoning biofilm functionalization is adopted, according to the method, the reflux ratio of each section can be optimally controlled according to the amount of denitrification available organic matters in the raw water, so that the possible section hydraulic load influence problem in the functional reactor is reduced while denitrification nitrogen removal is ensured, and efficient removal of the organic matters and nitrogen-containing pollutants at a low temperature is realized.