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      A Study on laboratory evaluation of phosphorus inactivation as a lake restoration measure in Lake Daechung

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      https://www.riss.kr/link?id=A75024207

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      Jar tests have been accomplished for the application of phosphorus inactivation technique as a lake restoration measure in Lake Daechungon which suffered prolonged algal bloom. The time of treatment, the efficiency of treatment to remove phosphorus fr...

      Jar tests have been accomplished for the application of phosphorus inactivation technique as a lake restoration measure in Lake Daechungon which suffered prolonged algal bloom. The time of treatment, the efficiency of treatment to remove phosphorus from the water column and to control the phosphorus-release from the sediment are discussed. The optimum time for the treatment with alum in Lake Daechung would be somewhere between the end of draining and the beginning of the increase of dissolved phosphorus in the lake. Recommended A!/P molar ratio for the treatment of Lake Daechung water at time of the experiment would be 18. Treatment of Lake Daechung water with alum by A1/P molar ratio of 18 brought about 10% reduction of total phosphorus in water column and led about 0.010mg/1 of total phosphorus which the criteria for the oligotrophic level of the lake water.
      Treatment of the lake water with 5mg A1/1 to control the release of phosphorus from the sediment showed significant to control the release of phosphorus from the sediment could be significant in aerobic as well as anaerobic condition, Phosphorus inactivation technique as a lake restoration measure in Lake Daechung would be effective in case it was employed as a part of overall restoration program.

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