Daaweynta gaaska qashinka ah, gaar ahaan daaweynta gaaska qashinka warshadaha ee ka kooban VOCs (sida daabacaadda, rinjiyeynta, iyo warshadaha kiimikada), budada dhulka diatomaceous waxay si wax ku ool ah u nuugi kartaa walxaha waxyeelada leh. Qaab-dhismeedka daloolada leh ee budada diatomaceous waxay leedahay tiro badan oo goobo nuugid ah, kuwaas oo qaban kara molecules VOC iyada oo loo marayo xoogga van der Waals iyo soo jiidashada electrostatic. Ka dib marka la beddelo dusha sare ee budada dhulka diatomaceous (sida rarista kaarboon firfircoon, titanium dioxide, iwm.), awoodda nuugista ee VOCs waa la sii wanaajin karaa. Marka la qaato aqoon-is-weydaarsiga rinjiyeynta ee warshadda wax soo saarka baabuurta, gaaska qashinka ah wuxuu ka kooban yahay xaddi badan oo benzene, toluene, iyo xylene ah. Ka dib marka gaaska qashinka lagu mariyo sariir shaandhayn ah oo ay ka buuxaan budada dhulka diatomaceous ee wax laga beddelay, heerka ka saarista benzene, toluene, iyo xylene wuxuu gaari karaa in ka badan 90%, fiirsashada VOCs ee gaaska qashinka la daweeyayna waxay ka hooseysaa heerka qiiqa qaranka (≤80 mg/m³). Marka la barbardhigo nuugista kaarboonka ee dhaqameed ee firfircoon, budada dhulka ee diatomaceous waxay leedahay faa'iidooyinka kharash yar, cimri dheer oo adeeg ah (waqtiga dheregsan ee nuugista waa 2-3 jeer ka badan kaarboonka firfircoon), iyo dib u soo noolayn fudud (waxaa dib loo soo noolayn karaa iyadoo lagu kululeynayo 300-400°C, awoodda nuugistana waxaa dib loogu soo celin karaa in ka badan 85% ka dib dib u soo noolaynta).

Daaweynta gaaska qashinka ur leh (sida warshadaha lagu nadiifiyo qashinka, warshadaha lagu nadiifiyo wasakhda, iyo beeraha xoolaha), budada dhulka ee diatomaceous sidoo kale waxay door wanaagsan ka ciyaari kartaa furfurka urta. Walxaha ur leh waxaa ugu badan ammonia, hydrogen sulfide, iyo mercaptans. Qaab-dhismeedka daloolada leh ee budada diatomace ayaa nuugi kara molecules-kan ur leh, kooxaha alkaline ama aashitada ee dushiisa (ka dib wax ka beddelka) waxay la falgeli karaan walxaha ur leh si ay u burburiyaan walxo aan waxyeello lahayn. Warshad lagu daaweeyo qashinka oo ku taal magaalo xeeb ah ayaa isticmaashay nidaam furfurka urta oo ku salaysan budada dhulka ee diatomaceous. Ka dib rakibidda, urta ku wareegsan geedka ayaa laga dhimay 5000 OU/m³ ilaa wax ka yar 200 OU/m³, taas oo aad uga hooseysay heerka qaranka (≤400 OU/m³), cabashooyinka ka imanaya dadka deegaanka ee u dhowna waxaa hoos u dhacay 90%. Isla mar ahaantaana, budada dhulka ee diatomaceous ee loo isticmaalo nidaamka furfurka urta ayaa dib loo isticmaali karaa ka dib dib u soo noolaynta, taasoo yaraynaysa tirada qashinka adag ee la soo saaro.

Daaweynta biyaha wasakhda ah, budada dhulka ee diatomaceous oo nuugid badan leh ayaa loo isticmaali karaa in lagu daaweeyo biyaha wasakhda ah ee warshadaha oo ay ku jiraan wasakhda dabiiciga ah (sida daabacaadda iyo rinjiyeynta biyaha wasakhda ah, biyaha wasakhda kiimikada ah). Daabacaadda iyo rinjiyeynta biyaha wasakhda ah waxay ka kooban tahay tiro badan oo midabyo iyo kaaliyeyaal ah, kuwaas oo leh chroma iyo COD sare, waana ay adag tahay in la burburiyo. Ku darista 2-5% budada dhulka diatomaceous ah biyaha wasakhda ah waxay nuugi kartaa midabada iyo walxaha dabiiciga ah ee biyaha ku jira. Tijaabooyinku waxay muujinayaan in heerka ka saarista chroma ee daabacaadda iyo rinjiyeynta biyaha wasakhda ah uu gaari karo in ka badan 95%, heerka ka saarista COD-na uu gaari karo 60-80%. Marka la barbardhigo coagulants-ka dhaqameed (sida aluminium sulfate), budada dhulka diatomaceous ma laha wasakh labaad (ma jiraan haraaga ion aluminium), dhoobada la soo saaro ka dib daaweynta way fududahay in la fuuq-baxo waxaana loo isticmaali karaa sidii walxo dhisme ka dib daaweyn aan waxyeello lahayn. Warshad daabacan iyo rinjiyeyn ah oo ku taal Zhejiang waxay isticmaashay budada dhulka diatomaceous si ay u daaweyso biyaha wasakhda ah. Daawaynta ka dib, biyaha wasakhda ah waxaa dib loogu warshadeyn karaa wax soo saar (ka dib daaweyn horumarsan), taasoo yareyneysa isticmaalka biyaha warshadda 30% waxayna badbaadineysaa kharash badan oo biyo ah.

Budada dhulka ee diatomaceous-ka ah ee nuugista sare leh ee ilaalinta deegaanka waxay leedahay noocyo kala duwan oo alaab ah, oo ay ku jiraan budada, granular, iyo extruded. Qaabka budada (100-800 mesh) wuxuu ku habboon yahay daaweynta biyaha wasakhda ah iyo munaaradaha nuugista gaaska qashinka; qaabka granular-ka ah (1-5 mm) wuxuu ku habboon yahay nidaamyada nuugista sariiraha go'an ee daaweynta gaaska qashinka ah; qaabka la sii daayay (5-10 mm) wuxuu ku habboon yahay mashaariicda daaweynta gaaska qashinka ah ee baaxadda weyn leh ee leh mugga hawada sare. Tilmaamaha farsamada ee ugu muhiimsan ee alaabtayadu waa: bedka dusha sare ee gaarka ah ≥200 m²/g, mugga daloolka ≥0.8 cm³/g, awoodda nuugista ee buluugga methylene ≥15 mL/0.1g, iyo qoyaanka ≤3%. Waxaan sidoo kale bixin karnaa badeecooyin budada dhulka diatomaceous ah oo wax laga beddelay iyadoo loo eegayo walxaha daaweynta gaarka ah ee macaamiisha, sida budada diatomite ee kaarboonka ku raran (si loogu talagalay nuugista VOCs), budada diatomite ee titanium dioxide ku raran (si loogu talagalay nabaad-guurka photocatalytic ee wasakhowga dabiiciga ah), iyo budada diatomite alkaline (si loogu talagalay nuugista hydrogen sulfide).

Habka wax soo saarka, waxaan qaadannaa tignoolajiyada firfircoonida ee horumarsan si loo xoojiyo awoodda nuugista ee budada dhulka ee diatomaceous. Habka kicinta waxaa ka mid ah kicinta aashitada (iyadoo la isticmaalayo aashitada sulfuric ee khafiifka ah si loo xoqo dusha sare ee walxaha diatomace, kordhinta tirada daloolada) iyo kicinta kulaylka (karinta heerkulka sare si looga saaro wasakhda dabiiciga ah ee daloolada iyo ballaarinta cabbirka daloolka). Budada dhulka ee diatomaceous ee firfircoon waxay leedahay meel dusha sare ah oo gaar ah oo kordhay 30-50% marka la barbar dhigo macdanta asalka ah, awoodda nuugistana si weyn ayaa loo hagaajiyay. Dufcad kasta oo alaab ah ayaa mari doonta tijaabinta awoodda nuugista (iyadoo la isticmaalayo xalka buluugga ah ee methylene sida adsorbate) iyo tijaabinta qaab-dhismeedka daloolka (iyadoo la adeegsanayo falanqeeye gaar ah oo dusha sare ah), hubinta in waxqabadka badeecaddu uu buuxiyo shuruudaha.