Muzvigadzirwa zvekurima uye zveparutivi, waini, vhiniga uye soy muto zvakaviriswa kubva kune starch, yezviyo.Iko kusefa kwezvigadzirwa izvi inzira yakakosha yekugadzira, uye kunaka kwekusefa kunobata zvakananga kunaka kwezvigadzirwa.Nzira dzechinyakare dzekusefa dzinosanganisira sedimentation yechisikigo, kushingaira adsorption, diatomite filtration, ndiro uye furemu filtration, etc. Iyi filtration nzira dzine mamwe matambudziko akasiyana dhigirii yenguva, kushanda, kuchengetedzwa kwezvakatipoteredza uye zvimwe zvinhu, saka zvakakosha kuti usarudze yakanyanya kusefa. nzira.
Hollow faibha inogona kubata hombe mamorekuru zvinhu uye tsvina iri pakati pe 0.002 ~ 0.1μm, uye inobvumira diki mamorekuru zvinhu uye zvakanyungudutswa solids (inorganic salt) kuti zvipfuure, kuitira kuti mvura yakasefa ichengetedze ruvara rwayo rwekutanga, kunhuhwirira uye kuravira, uye kuzadzisa chinangwa. yekupisa-isina sterilization.Naizvozvo, kushandisa hollow fiber sefa kusefa waini, vhiniga, soy muto ndiyo yakanyanya kusefa nzira.
Polyethersulfone (PES) yakasarudzwa semembrane material, uye hollow fiber ultrafiltration membrane yakagadzirwa nechinhu ichi ine high chemical property, inopikisa chlorinated hydrocarbons, ketones, acids nezvimwe zvinonyungudutsa organic, uye yakagadzikana kune acids, mabhesi, aliphatic hydrocarbons, mafuta. , doro nezvimwewo.Kugadzikana kwakanaka kwekupisa, kuramba kwakanaka kune chiutsi uye mvura inopisa kwazvo (150 ~ 160 ℃), kukurumidza kuyerera mwero, yakakwira mechanical simba.Iyo sefa membrane iri nyore kuchenesa nemukati yekumanikidza hollow fiber membrane, uye membrane shell, pombi uye vharafu zvinogadzirwa ne304 simbi isina tsvina, inova nehutsanana uye nyore kuchenesa.
Yewaini, vhiniga, soy muto akasiyana amino acids, organic acids, shuga, mavhitaminzi, organic zvinhu zvakaita sedoro uye ester uye musanganiswa wemvura, uye inotora nzira yekuyambuka-kuyerera kusefa, kuburikidza nepombi inozodikanwa kusefa iyo. mapaipi emvura mukati memembrane yekusefa, iyo membrane yakasefa mvura yechigadzirwa chakapedzwa, kwete kuburikidza nemumvura kuenda kune yakadzika pombi kuti idzokere kunzvimbo imwe chete.
Nekuda kwekubuda kwemvura yakanyungudutswa, simba rakakura rekugera rinogona kuumbwa pamusoro pe membrane, nokudaro nekudzikisa kusvibiswa kwe membrane.Chiyero cheyero yekuyerera kweiyo yakanyungudutswa yemvura kune yekuyerera kwechigadzirwa chakapedzwa inogona kugadziridzwa zvichienderana nemamiriro chaiwo emvura yakasefa kuderedza kusvibiswa kwe membrane, uye iyo yakadzika mvura inogona kudzokera kunzvimbo yayo yekutanga uye zvakare. -pinda iyo ultrafiltration system yekusefa kurapwa.
3 Kuchenesa System
Iyo yekuchenesa sisitimu yehollow fiber chikamu chakakosha chesefa, nekuti pamusoro pe membrane ichafukidzwa nekusvibiswa kwakasiyana kwakabatwa, uye kunyange maburi e membrane achavharwa nekusachena kwakanaka, izvo zvinoshatisa kupatsanurwa kwekuita, saka ndizvo. zvakakosha kugeza membrane nenguva.
Musimboti wekuchenesa ndewekuti mvura yekuchenesa (inowanzo kusefa mvura yakachena) inopindirwa zvakadzoreka nepombi yekuchenesa kuburikidza nepombi ichipinda mune hollow fiber filtration membrane kuti igeze tsvina pamadziro e membrane, uye tsvina inoraswa kuburikidza nekurasa tsvina. pipeline.Iyo yekuchenesa sisitimu yesefa inogona kucheneswa nenzira dzakanaka uye dzisina kunaka.
Positive wash (yakadai senge pressure flushing) kunyanya nzira iri kuvhara filtrate outlet valve, vhura vhara remvura, pombi inotanga kugadzirwa membrane body fluid input, ichi chiitiko chinoita hollow fiber mukati nekunze kudzvinyirirwa kumativi ese ari maviri akaenzana. kunamatira muvhu rakasununguka pamusoro pe membrane, kuwedzera traffic zvakare kushambidza kumusoro, firimu rakapfava pamusoro pehuwandu hwehutsvina hunogona kubviswa.
Backwash (reverse flushing), iyo chaiyo nzira ndeyekuvhara filtrate outlet valve, kuzarura zvakakwana tsvina yemvura yekubuda kwevhavha, kuzarura valve yekuchenesa, kutanga pombi yekuchenesa, mvura yekuchenesa mukati me membrane body, kubvisa tsvina mu membrane rusvingo gomba. .Paunenge uchigeza kumashure, kutarisisa kunofanirwa kubhadharwa kune kutonga kwekuwachisa kudzvanywa, backwashing pressure inofanirwa kunge isingasviki 0.2mpa, zvikasadaro zviri nyore kutsemura firimu kana kuparadza bonding pamusoro pehollow fiber uye binder uye kuumba kuvuza.
Kunyange zvazvo nguva dzose yakanaka uye kuchenesa kuchenesa kunogona kuchengetedza membrane filtration speed zvakanaka, nekuwedzera kwenguva yekumhanya ye membrane module, kusvibiswa kwe membrane kunowedzera kuwedzera, uye membrane filtration speed ichadererawo.Kuti udzore iyo membrane filtration flux, iyo membrane module inoda kucheneswa kemikari.Kemikari kuchenesa kunowanzoitwa neasidhi kutanga uye ipapo alkali.Kazhinji, 2% citric acid inoshandiswa mukunhonga, uye 1% ~ 2% NaOH inoshandiswa mukugeza alkali.
Nguva yekutumira: Aug-06-2021