서지주요정보
PACAS 공법에 의한 6가크롬을 함유한 폐수의 처리 = Treatment of wastewater containing hexavalent chromium by powdered activated carbon activated sludge (PACAS)system
서명 / 저자 PACAS 공법에 의한 6가크롬을 함유한 폐수의 처리 = Treatment of wastewater containing hexavalent chromium by powdered activated carbon activated sludge (PACAS)system / 백병천.
저자명 백병천 ; Paik, Byong-Chon
발행사항 [서울 : 한국과학기술원, 1987].
Online Access 원문보기 원문인쇄

소장정보

등록번호

4104571

소장위치/청구기호

학술문화관(문화관) 보존서고

MCIE 8708

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

As activated carbon is able to adsorb heavy metals that have inhibitory or toxic effects on activated sludge microorganism, the addition of powdered activated carbon (PAC) to the aeration tank of conventional activated sludge system-PACAS system-shows to be able maintain and achieve a high quality effluent. There is little direct information regarding factors that control the effectiveness of PAC for the treatment of wastewaters containing hexavalent chromium and organic compounds. Accordingly, the objectives of this study are to evaluate the performance of PACAS system for the treatment of wastewater containing hexavalent chromium (Cr(VI)), and to quantify parameters that affect removal of Cr(VI) and organic compounds in PACAS system. The effects of PAC on Cr(VI), chemical oxygen demand (COD), oxygen consumption rate by activated sludge microorganism were investigated in batch and continuous process. The initial adsorption rate Cr(VI) by PAC was greater than that of Cr(VI) by activated sludge floc, and equilibrium data for Cr(VI) was found to be described well by Freundlich isotherm equation in low concentration. The addition of PAC was an effective control method to allow continued biological operation in the presence of Cr(VI), and increased oxygen consumption rate, Cr(VI) removal efficiency, and the stability and reliability of COD removal efficiency in continuous flow process: removal efficiencies obtain were 95-97% (COD) and 38-44%(Cr(VI)) with PAC addition, and were 77-92% (COD) and 5-12%(Cr(VI)) without PAC addition. The kinetic constants of biological oxidation were determined on the laboratory scale units of completely mixed activated sludge (CMAS) system and PACAS system fed with synthetic wastewater containing hexavalent chromium. Introduction of 15 mg/1 Cr(VI) to a wastewater increased overall microorganism growth rate and auto-oxidation factor. The biological substrate removal rate in the reactor with PAC addition was almost twice that in the reactor without PAC addition.

서지기타정보

서지기타정보
청구기호 {MCIE 8708
형태사항 [x], 69 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 : 1, Experimental data. - 2, Biomass determination-nitric acid digestion method
저자명의 영문표기 : Byong-Chon Paik
지도교수의 한글표기 : 구자공
공동교수의 한글표기 : 이상은
지도교수의 영문표기 : Ja-Kong Koo
공동교수의 영문표기 : Sang-Eun Lee
학위논문 학위논문(석사) - 한국과학기술원 : 토목공학과,
서지주기 참고문헌 : p. 56-60
주제 Factory and trade waste.
Anaerobic bacteria.
생물학적 수처리. --과학기술용어시소러스
폐수. --과학기술용어시소러스
혐기성 처리. --과학기술용어시소러스
Bioreactors.
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