干旱区生态环境知识资源中心(Arid): Onsite Graywater Treatment in a Two-Stage Electro-Peroxone Reactor with a Partial Recycle of Treated Effluent

Arid

DOI	10.1021/acsestengg.1c00240
	Onsite Graywater Treatment in a Two-Stage Electro-Peroxone Reactor with a Partial Recycle of Treated Effluent
	Dobelle, Leopold; Kim, Seungkyeum; LeVan, Axl X.; Leandri, Hugo; Hoffmann, Michael R.; Cid, Clement A.
通讯作者	Cid, CA (corresponding author), CALTECH, Dept Environm Sci & Engn, Pasadena, CA 91125 USA.
来源期刊	ACS ES&T ENGINEERING
EISSN	2690-0645
出版年	2021
卷号	1 期号:12 页码:1659-1667
英文摘要	The efficacy of an uncoupled electro-peroxone (E-peroxone) prototype reactor system for the treatment of synthetic graywater is determined. The two-stage E-peroxone process integrates ozonation with the in situ production of hydrogen peroxide (H2O2) in a first stage reactor before ozone (O-3) is converted via the peroxone reaction to a hydroxyl radical (center dot OH). The two-stage prototype reactor system allows for the generation of H2O2 via cathodic oxygen reduction in the first-stage reactor before mixing with O-3 in the second-stage reactor. This approach prevents the degradation of polytetrafluoroethylene (PTFE) coated carbon cathodes by center dot OH that takes place in a single well-mixed reactor that combines electrochemical peroxide generation with O-3. The dosage of H2O2 into the second-stage reactor is optimized to enhance graywater treatment. Under these conditions, the uncoupled E-peroxone system is capable of treating synthetic graywater with an initial chemical oxygen demand (COD0) of 358 mg O-2/L, a total organic carbon (TOC0) of 96.9 mg/L, a biochemical oxygen demand (BOD0) of 162 mg O-2/L, and a turbidity of 11.2 NTU. The two-stage electro-peroxone system can reduce the initial COD0 by 89%, the TOC0 by 91%, BOD0 by 86%, and the turbidity by 95% after 90 min of treatment. At this performance level, the reactor effluent is acceptable for discharge and for use in nonpotable applications such as toilet-water flushing. A portion of the effluent is recycled back into the first-stage reactor to minimize water consumption. Recycling can be repeated consecutively for four or more cycles, although the time required to achieve the desired H2O2 concentration increased slightly from one cycle to another. The two-stage E-peroxone system is shown to be potentially useful for onsite or decentralized graywater treatment suitable for arid water -sensitive areas.
英文关键词	electro-peroxone graywater recycling ozone hydrogen peroxide
类型	Article
语种	英语
开放获取类型	gold, Green Accepted, Green Published
收录类别	ESCI
WOS记录号	WOS:000731023500005
WOS关键词	HYDROGEN-PEROXIDE ; HYDROXYL RADICALS ; WATER ; OXIDATION ; DEGRADATION ; KINETICS ; REUSE
WOS类目	Engineering, Environmental
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374365
作者单位	[Dobelle, Leopold; Leandri, Hugo; Hoffmann, Michael R.; Cid, Clement A.] CALTECH, Dept Environm Sci & Engn, Pasadena, CA 91125 USA; [Kim, Seungkyeum] CALTECH, Dept Chem Engn, Pasadena, CA 91125 USA; [LeVan, Axl X.] CALTECH, Dept Chem, Pasadena, CA 91125 USA
推荐引用方式 GB/T 7714	Dobelle, Leopold,Kim, Seungkyeum,LeVan, Axl X.,et al. Onsite Graywater Treatment in a Two-Stage Electro-Peroxone Reactor with a Partial Recycle of Treated Effluent[J],2021,1(12):1659-1667.
APA	Dobelle, Leopold,Kim, Seungkyeum,LeVan, Axl X.,Leandri, Hugo,Hoffmann, Michael R.,&Cid, Clement A..(2021).Onsite Graywater Treatment in a Two-Stage Electro-Peroxone Reactor with a Partial Recycle of Treated Effluent.ACS ES&T ENGINEERING,1(12),1659-1667.
MLA	Dobelle, Leopold,et al."Onsite Graywater Treatment in a Two-Stage Electro-Peroxone Reactor with a Partial Recycle of Treated Effluent".ACS ES&T ENGINEERING 1.12(2021):1659-1667.