The Study of Resource Utilization of Biochemical Sludge

• Main Author: 林福南
• Other Authors: Ming-Muh Kao
• Format: Others
• Language: zh-TW
• Published: 2000
• Online Access: http://ndltd.ncl.edu.tw/handle/20758860511973533452

碩士 === 國立成功大學 === 環境工程學系 === 88 === The Study of Resource Utilization of Biochemical Sludge Ming-Muh Kao and Fu-Nan Lin ABSTRACT The purpose of this reserch is the resource using of biochemical mineral sludge and its applies to use in the farm act as organism fertilizer to improve the soil physics and chemistry characterictic. Because of the biochemical mineral sludge contents cyanides , grease and Zn (the content is 926 ppm , 2.18 % and 543 ppm ( full extraction ) ) . Therefore we find out the optimal way of cyanides and grease biodegradation and Zn stabilization by pulsing slag and manure or soil and changing pH , aquiferous rate and reaction temperature . After the experiment of the first stage that adjusting pH and immobiling aquiferous rate and reaction temperature and the second stage that immobiling pH and adjusting aquiferous rate and reaction temperature , we choosing the combination which has obvious result of cyanides and grease biodegradation and Zn stabilization to proceed leaching experiment of soil column which is in order to confirm the security of environment application . In the part of cyanides and grease biodegradation and Zn stabilization , the optimal environment condition is pH 9.5 , aquiferous rate = 30 % and reaction temperature = 25 ~ 45 ℃ . In this environment condition we can get the optimal cyanides biodegradation , the less Zn extraction but the grease biodegradation is worse . Therefore we choose pH 8.5 , aquiferous rate = 30 % and reaction tempterature = 25 ~ 45 ℃ to be the environment conditions . After operating under this condition for a month , we get cyanides biodegradation efficiency for 70 % , grease biodegradatoion efficiency for 80 % and Zn extraction reduced 66 % . In the part of leaching experiment of soil column , the cyanide concentration and Zn concentration of leaching solution which is collected from the soil column of clay slate alluvium and biochemical mineral sludge which is mixed with manure is low ( about 1.9 ~ 5.5 ppm and 0.2 ~ 0.5 ppm ) . We still have to do the further estimation about the question of whether the biochemical mineral sludge will pollute the groundwater . Keyword : biochemical sludge , cyanide , grease , heavy metal , resource utilization, biodegradation.