Abstract

Blackandsmellywaterhasbecomeachronicdiseaseaffectingthehealthy

developmentofcities.SincethepromulgationoftheNationalTenWaterMeasures,all

regionshavetakenactivemeasurestocontrolblackandsmellywater.2020isayearfor

thetreatmentofblackandsmellywater.Howisthetreatmenteffectandthe

implementationeffectoftheprojectshouldbeanalyzedandevaluated,andexperience

andlessonsshouldbesummarized,soastofurthercarryoutbetterurbanwater

environmenttreatment.Inthispaper,atypicalurbanriversouthguanlanriverbasin

(longhuasection)asanexample,basedonNovember,2017toMay2020riverbasinwater

qualitytoevaluateurbaninterannualblacksmellywatercontrolling,andtopushtheriver

toahigherstandardofwaterqualityprotection,morereliabledisasterpreventionand

controlability,cleanerwaterenvironmentquality,morebeautifulhydrophilicecological

landscapeandmoreactivegreeneconomy:

(1)Combinedwiththelocaldatabase,detailedanalysisthesituationandcausesof

GuanlanRiverBasin(Longhuasection)blacksmellywater.Theresultsindicated22

tributaryareblacksmellywater,themeanvalueofDO(dissolvedoxygen)is4.95mg/L,

meanvalueofammonianitrogenis15.44mg/L,meanvalueofORP(oxidationreduction

potential)is247.18mv,meanvalueofSD(transparent)is25.49cm.Themainsourceof

pollutioncomesfromthepollutantreleasefromdomesticsewagedirectlydischargedinto

riversandriversediment.Thetotalammonianitrogenpollutionloadis14.20t/d,andthe

waterenvironmentcapacityofthebasinislow,only0.072t/d.

(2)Measureshavebeentakentoreduceexogenouspollution,suchasdrainage

impr