CAJ | 학술논문

以城市污水处理厂脱水污泥为对象,探讨其在165℃下经50 min水热预处理的碳、氮、磷、硫转化规律.结果表明,水热预处理可有效水解污泥中有机组分,VSS水解率达43.35％.碳、氮、磷、硫在水热预处理过程中表现出不同的转化规律,蛋白质和碳水化合物的水解率分别为54.36％和65.12％,溶解态有机物的主要组分为溶解态蛋白质(52.18％)；不溶态有机氮的水解率54.23％,氨氮占溶解态凯氏氮的22.13％,水解液中的氮主要以有机氮形式存在；总磷水解率为30.52％,磷酸盐占溶解态总磷的79.84％,说明在水热预处理过程中聚磷酸盐在聚磷菌细胞破碎后极易被水解为磷酸盐；总硫水解率为50.03％,硫化物占溶解态总硫的0.50％,而有机硫很难水解为硫化物.通过水热预处理后物质转化及组分分析,旨在为高含固污泥有效处理提供一定的理论参考.
이성시오수처리엄탈수오니위대상,탐토기재165℃하경50 min수열예처리적탄、담、린、류전화규률.결과표명,수열예처리가유효수해오니중유궤조분,VSS수해솔체43.35％.탄、담、린、류재수열예처리과정중표현출불동적전화규률,단백질화탄수화합물적수해솔분별위54.36％화65.12％,용해태유궤물적주요조분위용해태단백질(52.18％)；불용태유궤담적수해솔54.23％,안담점용해태개씨담적22.13％,수해액중적담주요이유궤담형식존재；총린수해솔위30.52％,린산염점용해태총린적79.84％,설명재수열예처리과정중취린산염재취린균세포파쇄후겁역피수해위린산염；총류수해솔위50.03％,류화물점용해태총류적0.50％,이유궤류흔난수해위류화물.통과수열예처리후물질전화급조분분석,지재위고함고오니유효처리제공일정적이론삼고.
The transformation characteristics of carbon, nitrogen, phosphorus and sulfur in dewatering sludge from municipal wastewater treatment plant ( WWTP) were investigated after thermal hydrolysis pretreatment at 165℃ for 50 min. The results showed that the hydrolysis efficiency of VSS could reach as high as 43. 35%. 54. 36% of protein and 65. 12% of carbohydrate were transferred to dissolved organics, respectively, and the main component of dissolved organic matter in hydrolysate was dissolved protein ( 52. 18%) . 54. 23% of insoluble organic nitrogen was turned into dissolved nitrogen and 22. 13% of dissolved nitrogen in hydrolysate was converted to ammonia. The transformation rate of insoluble phosphorus was 30. 52%. Dissolved phosphorus was mostly transformed to phosphate (79. 84%) as phosphorus-accumulating bacteria cells were crushed. 50. 03% of insoluble organic sulfur was hydrolyzed, and little change was detected in sulfide ( 0. 50%) . The analysis results of the organic compounds transformation are valuable for treatment of the thermal hydrolysis pretreated sludge with high solid content.