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반응성 담체를 이용한 A2/O 공정의 하수처릴 특성평가
이수원,이재성,Janjit Iamchaturapatr 한국환경분석학회 2004 환경분석과 독성보건 Vol.7 No.4
The wastewater treatment system with electrified media was operated during 3 months to examine the performance of wastewater treatment using electrified media. The results of COD and TP analysis showed the superiority of the A2/O system with electrified media over other control systems regardless of influent fluctuation. Electricity gives an activity to microorganism and makes biofilm have an active thickness during the reaction. The study has shown the high organic and phosphorous removal efficiency of the biofilm process by electrified media.
Phytoremediation of Organophosphorus and Organochlorine Pesticides by Acorus gramineus
Buyan Chuluun,Janjit Iamchaturapatr,Jae Seong Rhee 대한환경공학회 2009 Environmental Engineering Research Vol.14 No.4
The performance of phytoremediation has proven effective in the removal of nutrients and metals from aqueous systems. However, little information is available regarding the behavior of pesticides and their removal pathways in aquatic environments involving plant-uptake. A detailed understanding of the kinetics of pesticide removal by plants and information on compound/plant partition coefficients can lead to an effective design of the phytoremediation process for anthropogenic pesticide reduction. It was determined that the reduction rates of four organophosphorus (OP) and two organochlorine (OC) pesticides (diazinon, fenitrothion, malathion, parathion, dieldrin, hexachlorobenzene [HCB]) could be simulated by first-order reaction kinetics. The magnitude of k was dependent on the pesticide species and found within the range of 0.409 - 0.580 d-1. Analytical results obtained by mass balances suggested that differential chemical stability, including diversity of molecular structure, half-lives, and water solubility, would greatly influence the removal mechanisms and pathways of OPs and OCs in a phytoreactor (PR). In the case of OP pesticides, plant accumulation was an important pathway for the removal of fenitrothion and parathion from water, while pesticide sorption in suspended matter (SM) was an important pathway for removal of dieldrin and HCB. The magnitude of the pesticide migration factor (M(pesticide)(P)) is a good indication of determining the tendency of pesticide movement from below- to above-ground biomass. The uncertainties related to the different phenomena involved in the laboratory phyto-experiment are also discussed.
자정단계 기준 및 공간적 분석을 통한 연간 안양천 수질 실태 평가
이재성 ( Jae Seong Rhee ),잔짓 ( Janjit Iamchaturapatr ),윤성일 ( Seong Il Yoon ),이광현 ( Kwang Hyun Rhee ),최승일 ( Seung Il Choi ),김태영 ( Tae Young Kim ) 한국환경분석학회 2011 환경분석과 독성보건 Vol.14 No.1
The water quality of Anyang stream, the first tributary of Han River, was investigated from 2006 to 2010. The concentrations of nutrients and organic contents such as ammonia, nitrite, nitrate, phosphate, and chemical oxygen demand in water were measured by grab sampling analysis. Water samples were collected at the marked point for five years. According to pollutant levels, Anyang stream was divided into six zones. Spatial changes of annual water pollution were demonstrated using zone identification and strip analysis technology.