Polyacrylamidechinhu chinoshandiswa zvakanyanya muindasitiri yemapepa. Polyacrylamide (PAM), sepolymer inonyungudika mumvura, ine hunhu hwakanaka hwe flocculation, thickening, dispersion nezvimwe. Ichashandiswa kune akasiyana maitiro ane mabasa akasiyana. Muindasitiri yekugadzira mapepa, PAM inoita basa risingakoshi. Yakaunza mabhenefiti makuru ehupfumi kuindasitiri yekugadzira mapepa nekuvandudza hunhu hwe pulp uye kuwedzera kushanda zvakanaka kwemichina yemapepa. Chinyorwa chino chichakurukura zvakadzama kushandiswa kwepolyacrylamide mukugadzira mapepa uye mhedzisiro yayo pakuvandudza kushanda zvakanaka kwekugadzira.
Hunhu hwepakutanga uye mabasa epolyacrylamide
Polyacrylamide ipolymer ine mamorekuru akawanda inogona kukamurwa kuita mhando dzisiri dzeionic, anionic, cationic uye amphoteric zvichienderana nehunyanzvi hwayo hwekuchaja. Kana PAM yanyungudika mumvura, uye chimiro chayo che "long-chain molecular" chinoita kuti ive nemabasa akanaka akadai sekupwanyika, kukora, rubatsiro rwekuchengetedza, uye rubatsiro rwekusefa. Muindasitiri yemapepa, polyacrylamide inonyanya kushandiswa muzvinhu zvinotevera:
1. Rubatsiro rwekuchengetedza:
Mamorekuru ePAM ane chimiro checheni refu uye anogona kunamirwa pamusoro pemafibers nemafillers kuti agadzire mabhiriji. Izvi zvinoita kuti huwandu hwemafillers nemafibers hurambe huripo pawebhu repepa huve nani. Kuderedza kurasikirwa kwefiber mumvura chena uye kuderedza kurasikirwa kwezvinhu zvakabikwa. Nekuwedzera huwandu hwemafillers nemafibers, hunhu hwepepa hwakadai sekutsetseka, kudhindwa, uye simba zvinogona kuvandudzwa.
2. Rubatsiro rwekusefa:
Kuvandudza mashandiro ekubviswa kwemvura mu pulp, kukurumidzisa kusefa kwemvura uye kuderedza kushandiswa kwesimba.
3. Flocculant:
Kurumidza kushaya mvura yakakwana kubva mumatope: PAM inogona kukwesha shinda diki, zvinozadza nezvimwe zvinhu zvakasungirirwa mu pulp kuti zvigadzire zvidimbu zvakakura, kukurumidzisa kugara kwematope uye kushaya mvura yakakwana kubva mumatope, uye kuderedza mari yekurapa tsvina.
Kuvandudza hunhu hwemvura: PAM inogona kubvisa zvinobudirira zvinhu zvakaoma zvakasungirirwa uye zvinhu zvakasikwa mumvura yakasviba, kuderedza BOD neCOD mumvura yakasviba, kuvandudza hunhu hwemvura, uye kuderedza kusvibiswa kwezvakatipoteredza.
4. Muchina wekuparadzira:
Kudzivirira kuungana kwefiber: PAM inogona kudzivirira zvinobudirira kuungana kwefiber mu pulp, kuvandudza kufanana kwe pulp, uye kuvandudza mhando yepepa.
Kushandiswa kwepolyacrylamide mukugadzira mapepa
1. Danho rekugadzirira pulp
Munguva yekugadzira pulp, fibers dzakapfava uye fillers dzinorasika nyore nyore nemvura yakasviba, zvichikonzera marara ezviwanikwa uye kusvibiswa kwezvakatipoteredza. Kushandisa cationic polyacrylamide senzira yekuchengetedza kunogona kubata nekugadzirisa fibers diki uye fillers mupulp kuburikidza nekudzikisa simba uye kubatanidza mabhandi. Izvi hazvingoderedzi kurasikirwa kwemafibers chete, asiwo zvinoderedza kuzara kwemvura inoraswa.
2. Muchina wepepa unonyorovesa system
Mumuchina wepepa unonyorovesa, kushaya mvura nekukurumidza ndiyo kiyi yekuvandudza mashandiro ekugadzira. Anionic kana nonionic polyacrylamide inogona kushandiswa senzira yekusefa kuti zvive nyore kuti mvura ibude kubva muchimiro chefiber network nekuvandudza kutenderera pakati pefibers. Maitiro aya anopfupisa nguva yekushaya mvura zvakanyanya uku achideredza kushandiswa kwesimba panguva yekuomesa.
3. Danho rekugadzira mapepa
Semuchina wekuparadzanisa, polyacrylamide inogona kudzivirira kutenderera kwefiber uye kugadzirisa kufanana uye kutsetseka kwepepa. Nekusarudza nekungwarira huremu hwemamorekuru uye huwandu hwechaji yePAM, hunhu hwepepa rakapedzwa, hwakadai sekusimba kwekudhonza uye simba rekubvaruka, hunogonawo kugadziriswa. Pamusoro pezvo, polyacrylamide inogonawo kuvandudza kupenya kwepepa rakaputirwa uye kuita kuti kudhinda kwepepa kuve nani.
Mabhenefiti makuru epolyacrylamide mukuvandudza kushanda zvakanaka kwekugadzira
1. Deredza kurasikirwa nezvinhu zvakabikwa
Kushandiswa kwekuchengetedza zvinhu kunobatsira zvikuru kuvandudza mwero wekuchengetedza zvinhu zvakanaka mu pulp, kunoderedza kushandiswa kwezvinhu zvakabikwa, uye kunochengetedza mari yekugadzira.
2. Kurumidza kugadzirisa dambudziko rekushaya mvura mumuviri
Kuunzwa kwezvinobatsira pakusefa kunoita kuti nzira yekubvisa mvura ishande zvakanaka, zvichiita kuti muchina wepepa ushande nekukurumidza uye kupfupisa nguva yekugadzira. Izvi hazvingowedzere kugona kwekugadzira wega, asiwo zvinoderedza kushandiswa kwesimba.
3. Deredza kumanikidzwa kwekurapa mvura yakasviba
Nekuvandudza simba re flocculation, polyacrylamide inogona kuderedza zviri mukati memvura yakasviba, kuderedza kuzara kwenzvimbo dzekuchenesa tsvina kubva kwadzinobva uye kuderedza mari yekudzivirira zvakatipoteredza yemabhizinesi.
4. Kuvandudza mhando yepepa
Kushandiswa kwezvinoparadzira kunoita kuti kugoverwa kwefiber kwepepa kuve kwakafanana, kunovandudza zvakanyanya hunhu hwepepa uye hwekuona, uye kunowedzera kukwikwidzana kwemusika kwechigadzirwa.
Zvinhu zvinokanganisa kushandiswa kwepolyacrylamide
Kuti polyacrylamide ishande zvakanaka, zvinhu zvinotevera zvinofanira kutariswa:
1. Sarudzo yemuenzaniso wePAM
Maitiro akasiyana ekugadzira mapepa uye mhando dzemapepa ane zvinodiwa zvakasiyana zvehuremu hwemamorekuru uye huwandu hwechaji yePAM. PAM ine huremu hwakawanda hwemamorekuru yakakodzera kushandiswa kweflocculation uye filter aid, nepo PAM ine huremu hushoma hwemamorekuru yakakodzera kupararira.
2. Kuwedzera huwandu uye nzira yekuwedzera
Huwandu hwePAM hunowedzerwa hunofanira kudzorwa nemazvo. Huwandu hwakawandisa hunogona kukonzera migumisiro yakaipa, yakadai sekuchinja mashandiro ekushaya mvura mumuviri kana kuwedzera mari yekugadzira. Panguva imwe chete, nzira yekuwedzera yakapararira inofanira kushandiswa kudzivirira kuungana kwenzvimbo iyo inokanganisa mhedzisiro yacho.
3. Mamiriro ekuita
Tembiricha, pH uye mamiriro emvura zvese zvinokanganisa mashandiro ePAM. Semuenzaniso, cationic PAM inoshanda zvakanyanya mumamiriro ekunze asina kusimba kusvika kune ane acid zvishoma, nepo anionic PAM yakakodzera munzvimbo dzine alkaline.
Sechinowedzerwa chinoshanda muindasitiri yekugadzira mapepa, polyacrylamide inoita basa rakakosha mukuvandudza mashandiro ekugadzira, kuderedza mari yekugadzira uye kuvandudza mhando yechigadzirwa nehunyanzvi hwayo hwekutsvedza, kuchengetedza, kusefa uye kupararira. Mukushandiswa kwayo, makambani anofanirwa kusarudza zvine musoro uye kugadzirisa mamiriro ekushandisa ePAM zvichienderana nehunhu hwavo hwemaitiro uye zvinodiwa kuti vawane mabhenefiti akanakisa ehupfumi nenharaunda.
Nguva yekutumira: Mbudzi-28-2024
