CAJ | 학술논문

采用了一种可生物降解聚合物(BDP)聚羟基丁酸戊酸酯(PHBV)作为碳源和生物膜载体去除水体中的硝酸盐.结果表明：以 PHBV 为碳源和载体的反硝化系统启动时间短,硝酸盐氮(NO3--N)去除率高于93%；水力停留时间(HRT)对反硝化效果影响显著,但反硝化系统对进水硝酸盐氮负荷具有较好的抗冲击能力；出水DOC(溶解性有机碳)浓度低于27.5mg/L,表明PHBV具有一定的控释碳源的能力；反应器不同高度脱氮效果差异显著,反应器中层(10-15cm)处获得最大NO3--N去除率.
채용료일충가생물강해취합물(BDP)취간기정산무산지(PHBV)작위탄원화생물막재체거제수체중적초산염.결과표명：이 PHBV 위탄원화재체적반초화계통계동시간단,초산염담(NO3--N)거제솔고우93%；수력정류시간(HRT)대반초화효과영향현저,단반초화계통대진수초산염담부하구유교호적항충격능력；출수DOC(용해성유궤탄)농도저우27.5mg/L,표명PHBV구유일정적공석탄원적능력；반응기불동고도탈담효과차이현저,반응기중층(10-15cm)처획득최대NO3--N거제솔.
PHBV (poly-3-hydroxybutyrate-co-3-hydroxyvalerate) as a biodegradable polymer was used as carbon source and biofilm carrier to remove nitrate in water. A short start-up period was observed and nitrate-nitrogen (NO3--N) removal rates were greater than 93%. With a decrease of HRT from 1h to 0.5h, denitrification changed remarkably. The denitrification system was however found to be resistant to the shock load of influent NO3--N. The concentrations of effluent DOC (Dissolved Organic Carbon) were lower than 27.5mg/L, indicating that controlled carbonrelease was applicable to PHBV. Nitrate removal rates varied significantly with reactor height while the highest was obtained at the middle height layer (10~15cm).