Techno-economic analysis of sidestream ammonia removal technologies:Biological options versus thermal stripping  

作　　者：Pascal Ochs Ben Martin Eve Germain-Cripps Tom Stephenson Mark van Loosdrecht Ana Soares 

机构地区：[1]Cranfield University,College Road,Cranfield,Bedford,MK430AL,United Kingdom [2]Thames Water,Reading STW,Island Road,RG20RP,Reading,United Kingdom [3]Delft University of Technology,Building 58,Van der Maasweg 9,2629,Delft,Netherlands

出　　处：《Environmental Science and Ecotechnology》2023年第1期107-114,共8页环境科学与生态技术（英文）

基　　金：funding provided by Thames Water Utilities Ltd.and the Engineering and Physical Sciences Research Council(EPSRC)through their funding of the STREAM Industrial Doctoral Centre(IDC)EP/L015412/1.

摘　　要：Over the past twenty years,various commercial technologies have been deployed to remove ammonia(NH4eN)from anaerobic digestion(AD)liquors.In recent years many anaerobic digesters have been upgraded to include a pre-treatment,such as the thermal hydrolysis process(THP),to produce more biogas,increasing NH4eN concentrations in the liquors are costly to treat.This study provides a comparative techno-economic assessment of sidestream technologies to remove NH4eN from conventional AD and THP/AD dewatering liquors:a deammonification continuous stirred tank reactor(PNA),a nitrification/denitrification sequencing batch reactor(SBR)and thermal ammonia stripping process with an ammonia scrubber(STRIP).The SBR and PNA were based on full-scale data,whereas the STRIP was designed using a computational approach to achieve NH4eN removals of 90e95%.The PNA presented the lowest whole-life cost(WLC)over 40 years,with£7.7 M,while the STRIP had a WLC of£43.9 M.This study identified that THP dewatering liquors,and thus a higher ammonia load,can lead to a 1.5e3.0 times increase in operational expenditure with the PNA and the SBR.Furthermore,this study highlighted that deammonification is a capable and cost-effective nitrogen removal technology.Processes like the STRIP respond to current pressures faced by the water industry on ammonia recovery together with targets to reduce nitrous oxide emissions.Nevertheless,ammonia striping-based processes must further be demonstrated in WWTPs and WLC reduced to grant their wide implementation and replace existing technologies.

关 键 词：Deammonification NITRIFICATION DENITRIFICATION WASTEWATER Sludge dewatering liquors 

分 类 号：X703[环境科学与工程—环境工程]