CoalminewastewatertreatmentandreusetechnologyComparativeStudy

　　Digest：Introducedthesewageandwastewaterprocessingresourcesofthelatesttechnologiesandprocesses,analysisandcomparisonofthethreekindsofprocessoptionstodealwithcoalminewastewatersysteminvestmentandoperatingcosts,andtoexplorethereverseosmosiswatertreatmenttechnologyinthecoalminewastewatertreatmentapplicationThetechnicalandeconomicfeasibility.Coalminewastewatertreatmentandreuseoftheconsolidatedoperatingcostsforthe:2.185-2.465yuan/ton.Onemembraneoftheprocessingcostsaslowas:2.185yuan/ton.SuchpricesondroughtandwatershortageintheNorthwestregionisveryattractive.Ofminewastewaterrecycling,notonlycanreducetheamountofwastewaterdischarge,butalsocanmakewaterresource,itshouldbesaid,itisamethodofwaterresourcesinthehopeofregeneration,butalsoourcountrytoachievesustainableuseofwaterresourcesinaneffectivewayto.

　　Keywords:reverseosmosiselectroplatingwastewaterrecycling。

　　China'slargepopulationandunevenspatialandtemporaldistributionoffreshwaterresources,waterresourcesandsocio-economicdevelopmentisnotbalanced;populationgrowthhasincreasedyearafteryearthedemandofwaterresources,industry'srapiddevelopmenthasbecomeincreasinglyseriouswaterpollution,thuscreatingashortfallofwaterresourcesandwaterpollutionareincreasing.Atpresent,China'sprominentcontradictionbetweenwatersupplyanddemand,therearemorethan300citiesshortofwater,ofwhichthereare114citiesinseriouswatershortages.WatersupplyanddemandinChinainthe21stcenturythesituationwasveryseriouswatercrisiswillbecomeaquestionofresourcesinthemostseverepunishmentofallissues.Toresolvethisproblem,inadditiontothescientificmanagementofwaterresourcesandoptimizingtheassignedamount,thehigh-techmeanstobringintofullplaytheroleoftheuseofwaterresourcesisalsoverycrucial.

　　Inrecentyears,China'sannualvolumeofabout400-500millionsewageM3,treatedemissionsfromonly15-25%,duetocross-flowofsewageeverywhere,sothatallourmajorsourcesofwaterproducedifferentdegreesofpollution,aseriousdeteriorationofwaterenvironment【4】.Therefore,toenhancewastewatertreatment,sothatnotonlythedischargestandardsbutalsotoalargenumberofreuse,verynecessary,whichimprovethewaterenvironmenttoeasetheshortageofwaterresources,savingpreciouswaterresourcesareveryimportant.Urbanandindustrialsewagehasbeenthedepthoftreatmentcanbeusedforagriculturalirrigation,industrialproduction,urbanlandscape,UrbanGreen,lifemiscellaneous,groundwaterrecharge,andadditionalsurfacewaterinsuchapplicationsas【8】.Traditionalwatertreatmenttechnologycaneliminatesomeairpollutants,theCOD,BODandheavyfinancialandotherindicatorsofreducedpollutantemissionstandards,ormiscellaneoussafetystandards,butcannotcompletelyeliminatethedrainagecontainedinthesolubilityoftracecontaminants.Reverseosmosismembranetechnologytothoroughlyremovethesepollutantstoachievethestrictsenseofthewastewaterreclamation.Traditionaltreatmentprocessesandmembranetechnologyintegrationcanbesewageorwastewaterintoadifferentwaterqualitystandardsforreusewater,ormakeitloopback

　　logy,theintroductionofreverseosmosistechnologytechnicalprocessingsecondaryeffluent,effluentqualityuptoTDS≤80mg/L,theexpansionoffreshwaterresources.SuchastheMiddleEast,Australia,Singaporeandothercountriesareexamplesofmajorprojectsinthisarea【9】.

　　4.Integratedmembraneprocesswastewatertreatmentmethods