Ultrasound txhim kho dej phwj cuam Sludge kho

Ultrasound kho, uas muaj cov kev qhia txog kev siv lub suab tsis meej rau hauv nruab nrab ntawm cov kab sludge, yog ib lub ntawm ntau cov technologies uas txhawb hydrolysis thaum lub caij sludge kho.

Tus thawj xibfwb tseem ceeb yog los ntawm kev puas tsuaj ntawm cov kab mob hauv cov kab mob thiab cov kabmob nyuaj -thawmmuag. Kab mob hlwb tawm lawv cov kab mob, uas yog muaj rau noj los ntawm lwm yam tsiaj, hos cov organics tau tawg cia rau hauv cov me me uas yooj yim biodegradable.

Thaum lub teb ultrasonic yog siv rau cov kua nruab nrab, feeb npuas daim ntawv thaum txheej txheem cavitation. Cov cavitation npuas implode nyob rau hauv huab rog ntawm kub thiab siab. Cov quab yuam ntawm lub npuas implosions so li sludge hais thaum thov nyob rau hauv dej phwj tuaj sludge kho. Qhov teebmeem sib txawv raws li qhov kev siv ntawm cov teb ultrasonic.

Thaum qis qis dua, cov kab mob qoob loo raug shaken tawm thiab / los yog puas tau los ntawm cov nplais ntawm cov khoom tawg, yog li pab kev sib cog lus sludge. Raws li qhov kev siv qis dua, cov khoom tis loj me me thiab qhov dej ntawm cov sludge particles alters. Extracellular polymeric cov ntaub ntawv raug tso tawm thiab, nrog rau kev hloov loj dua thiab kev them nqi, txhim kho cov dej ntws tawm ntawm cov dej phwj tuaj rau hauv tus txheej txheem hu ua "bioflocculation". Qhov txheej txheem no ua rau cov dej ntws sludge kom zoo dua whilst muaj qis polyelectrolyte noj.

Yog hais tias theem ntawm ultrasound yog nce, cov khoom - nrog rau cov enzymes exocellular - yog shaken tawm ntawm cov av ntub dej. Cov khoom siv no muaj cov kab mob lom cem tawm thiab ua rau cov tshuaj tua cov kab mob biokinetic ntau dua. Thiaj li, ultrasound tshuab ua rau cov dej khov ua kom tsis muaj zog, uas ua rau cov khoom siv roj biogas thiab txo cov kua roj zis hauv cov txheej txheem lub cev, thiab txo cov khoom siv zom zaws thaum lub caij qhib kev kho mob.

Thaum kawg, nyob rau theem siab tshaj plaws ntawm insonation, sludge hais kiag li pov tseg thiab lawv cov khoom tawm rau kev noj los ntawm lwm hom. Cov khoom siv roj hmab kuj tseem tuaj yeem tawg ua ib feem me me. Qhov txheej txheem no ua kom ob qho tib si roj biogas thaum lub hauv plab zom zaub mov thiab kev noj tshuaj lom neeg tawm thaum lub sij hawm qhib kev kho mob sludge. Qhov no tau raug pom ntawm full-scale nrog kev txhim kho dua 80% nrog rau phosphorous, thiab 90% nrog rau kev tshem tawm cov ammonia.

Ultrasound ua haujlwm zoo nrog pov tseg thiab sludge nrog ntau qhov khoom ntawm cov khoom siv hluav taws xob thiab / lossis cellular teeb meem, xws li pov tseg cov dej ntws sludge. Cov kwj no yuav tuaj yeem degraded thaum lub caij plab zom mov.

Cov cuab yeej siv tau ua tiav tag nrho hauv lub teb chaws Europe rau ntau xyoo nrog 14 lub lag luam hauv kev lag luam, tiam sis cov ntaub ntawv tsis ntev los no ntawm ob kab ua tiav cov nroj tsuag hauv teb chaws Yelemees tau sau cov kev tshwm sim zoo.

Ultrasound kho cov dej thooj ob sab sludge khov kho cov dej khov ua kom tsis muaj zog nyob rau hauv cov kev simer hauv tsev los ntawm qhov nruab nrab ntawm 50%, uas tom qab tau nce biogas ntau lawm los ntawm 45% ntawm lub kav dej phwj tuaj cog rau hauv Süd, lub teb chaws Yelemees. Kev pub dej ntawm cov anaerobic digester ntawm qhov chaw no yog tam sim no 100% theem sludge. Tsis tas li ntawd, kev ua haujlwm dewatering nce ntawm tsib feem pua ntsiab lus uas siv 11% tsawg dua polymer.

Volatile khib nyiab puas tsuaj los ntawm 50% mus rau 62% ntawm ib tsob nroj kho sludge siv ultrasound tshuab ntawm Wallerfangen, lub teb chaws Yelemees. Ntawm no, lub kwj pub yog sib xyaw thawj thiab theem nrab sludge ntawm ib qho ratio ntawm 35:65. Ntxiv rau, kev cog qoob loo biogas ntau zog los ntawm thaj tsam li ntawm 25%. Hauv dewatering cog, ncuav mog qab zib cov txheej txheem tau nce ntxiv txog li xya feem pua ntsiab lus (kev txhim kho ntawm> 40%) los ntawm kev siv xovxwm txawm siv 33% tsawg dua polymer. Dewatering kev ua haujlwm nce ntawm 17% mus rau 24% qhuav khib nyiab. Tog ua ke, kev txhim kho cov dej khov thiab cov khib nyiab tsis sib haum yuav ua rau 30% tsawg dua cov khoom qab zib sludge tawm hauv cov hauj lwm.