Textile tsvina inonyanya kuve mvura yetsvina ine hutsvina hwechisikigo, mafuta, starch uye zvimwe zvinhu zvinogadzirwa panguva yekubikira, kusukurudza, kuchena, saizi, nezvimwe. saizi, nezvimwewo, uye ine huwandu hukuru hwezvinhu zvakaumbwa sedhayi, starch, cellulose, lignin, detergents, pamwe neinorganic zvinhu zvakaita sealkali, sulfide, uye munyu wakasiyana siyana, izvo zvinosvibisa zvakanyanya.
Hunhu hwekudhinda uye kudhaya tsvina yemvura
Indasitiri yekudhinda uye yekudhaya ndiyo inonyanya kuburitsa mvura yetsvina yemaindasitiri. Mvura yetsvina inonyanya kuve netsvina, girizi, munyu pamachira emucheka, uye akasiyana slurries, madhayi, ma surfactants, anowedzera, asidhi uye alkalis akawedzerwa panguva yekugadzirisa.
Hunhu hwemvura yakasviba hwakanyanya organic concentration, yakaoma kuumbwa, yakadzika uye inoshanduka chromaticity, hombe pH shanduko, shanduko huru muhuwandu hwemvura uye mhando yemvura, uye zvakaoma kubata tsvina yeindasitiri. Nekuvandudzwa kwemakemikari fiber machira, kusimuka kwekutevedzera sirika uye kuvandudzwa kwemashure ekudhinda uye kudhaya kupedzisa zvinodiwa, huwandu hukuru hwezvinhu zvinoramba organic zvinhu zvakaita sePVA slurry, rayon alkaline hydrolyzate, madhayi matsva, uye anobatsira akapinda mumucheka. kudhinda nekudhaya mvura yetsvina, zvichiunza dambudziko rakakura kumaitiro echinyakare ekuchenesa mvura yetsvina. Iko COD kusungirirwa kwakawedzerawo kubva kumazana emamirigiramu parita kusvika ku3000-5000 mg/l.
Iyo inotsvedza uye yekudhaya tsvina ine chroma yakakwira uye yakakwira COD, kunyanya kudhinda uye kudhaya maitiro senge mercerized bhuruu, mercerized dema, yakawedzera rima bhuruu, uye yakawedzera rima dema rakagadzirwa zvinoenderana nemusika wekunze. Rudzi urwu rwekudhinda uye kudhaya rinoshandisa huwandu hukuru hwedhayi resarufa uye kudhinda uye kudhaya anobatsira akadai sodium sulfide. Nokudaro, mvura yakasviba ine sulfide yakawanda. Iyi mhando yemvura yetsvina inofanirwa kunge isati yagadziriswa nemishonga uye yobva yaiswa pasiriyo kurapwa kuti isangane nemadiro ekubuda. Iyo bleaching uye kudhaya tsvina yemvura ine dhayi, slurries, surfactants uye zvimwe zvinobatsira. Huwandu hwemhando iyi yemvura yakasviba yakakura, uye iyo yekuisa uye chromaticity zvese zvakaderera. Kana kurapwa kwepanyama uye kwemakemikari kuchishandiswa chete, tsvina iri zvakare pakati pe100 ne200 mg / l, uye chromaticity inogona kusangana nezvinodiwa zvekubuda, asi huwandu hwekusvibiswa hunowedzera zvakanyanya, mari yekurapa sludge yakakwira, uye ndeye. nyore kukonzera kusvibiswa kwechipiri. Pasi pemamiriro ekusimba kwekuchengetedza kwezvakatipoteredza zvinodiwa, iyo biochemical kurapwa system inofanirwa kutariswa zvizere. Zvakajairwa zvakagadziridzwa biological kurapwa maitiro anogona kusangana nezvinodiwa kurapwa.
Kemikari kurapwa nzira
Coagulation nzira
Iko kune kunyanya yakasanganiswa sedimentation nzira uye yakasanganiswa flotation nzira. Macoagulants anoshandiswa anowanzo aluminium salt kana iron salt. Pakati pazvo, basic aluminium chloride (PAC) ine zvirinani bridging adsorption performance, uye mutengo weferrous sulfate ndiwo wakadzikira. Huwandu hwevanhu vanoshandisa polymer coagulants kunze kwenyika huri kuwedzera, uye kune maitiro ekutsiva inorganic coagulants, asi muChina, nekuda kwezvikonzero zvemitengo, kushandiswa kwepolymer coagulants kuchiri kushoma. Zvinonzi anionic polymer coagulants asina simba ane huwandu hwakakura hwekushandisa. Kana yakashandiswa pamwe chete nealuminium sulfate, vanogona kutamba zvirinani. Mabhenefiti makuru eiyo yakasanganiswa nzira iri nyore kuyerera, kushanda kwakaringana uye manejimendi, yakaderera michina yekudyara, diki tsoka, uye yakakwira decolorization kushanda kwedhayi dzehydrophobic; izvo zvisingabatsiri ndeyekudhura kwekushandisa, huwandu hukuru hwematope uye kuomerwa mukupererwa kwemvura, uye kushata kwekurapa kunokonzerwa nedhayi yehydrophilic.
Oxidation nzira
Ozone oxidation nzira inoshandiswa zvakanyanya kunze kwenyika. Zima SV et al. akapfupisa iyo yemasvomhu modhi yeozone decolorization yekudhinda uye kudhayira tsvina yemvura. Zvidzidzo zvakaratidza kuti kana iyo ozone dosage iri 0.886gO3 / g dhayi, iyo decolorization mwero wechiedza dhayi dhayi tsvina inosvika 80%; chidzidzo chacho chakawanawo kuti huwandu hwe ozone hunodiwa kuti urambe uchishanda hwakakwirira kudarika hunodiwa pakushanda kwepakati, uye kuiswa kwezvikamu mu reactor kunogona kuderedza huwandu hwe ozone ne 16.7%. Naizvozvo, kana uchishandisa ozone oxidation decolorization, zvinokurudzirwa kugadzira inopindirana reactor uye funga kuisa partitions mairi. Ozone oxidation nzira inogona kuwana yakanaka decolorization maitiro kune akawanda madhayi, asi decolorization mhedzisiro yakashata kune isinganyungudika mvura dhayi senge sulfide, kuderedza, uye machira. Tichitarisa kubva kune ruzivo rwekushanda uye migumisiro kumba uye kune dzimwe nyika, nzira iyi ine yakanaka decolorization effect, asi inoshandisa magetsi akawanda, uye zvakaoma kukurudzira uye kuishandisa pamwero mukuru. Iyo photooxidation nzira ine yakakwira decolorization inoshanda pakurapa kudhinda uye kudhaya tsvina yemvura, asi mari yemidziyo uye mashandisiro emagetsi zvinoda kudzikiswa.
Electrolysis nzira
Electrolysis ine maitiro akanaka ekurapa pakurapa kwekudhinda uye kudhayira mvura yetsvina ine asidhi dhayi, ine decolorization mwero we50% kusvika 70%, asi mhedzisiro yekurapa pamvura yetsvina ine rima ruvara uye yakakwira CODcr haina kunaka. Zvidzidzo zvemagetsi emagetsi edhayi zvinoratidza kuti kurongeka kweCODcr kubviswa kwedhayi dzakasiyana panguva yekurapa kwe electrolytic ndeiyi: dhayi dzesarufa, dhayi dzinoderedza> acid dhayi, dhayi dzinoshanda> dhayi dzakarerekera, dhayi dzakananga> cationic dhayi, uye nzira iyi iri kusimudzirwa. uye kushandiswa.
Ndezvipi zviratidzo zvinofanirwa kuongororwa kudhinda uye kudhaya tsvina yemvura
1. Kuonekwa kweCOD
COD ndiyo chidimbu chemakemikari anodikanwa okisijeni mukudhinda uye kudhaya tsvina yemvura, iyo inoratidza huwandu hwekemikari okisijeni inodiwa pakuita oxidation uye kuora kweiyo organic uye inorganic zvinhu mumvura ine tsvina. Kuonekwa kweCOD kunogona kuratidza zviri mukati memvura yakasviba, izvo zvakakosha pakuona zviri muorganic mukudhinda uye kudhaya tsvina.
2. BOD kuonekwa
BOD ndiyo chidimbu chekudiwa kweokisijeni yebiochemical, iyo inoratidza huwandu hweokisijeni inodiwa kana organic chinhu chiri mumvura yetsvina chaodzwa nema microorganisms. Kuonekwa kweBOD kunogona kuratidza zviri mukati meiyo organic matter mukudhinda uye kudhaya tsvina yemvura inogona kuderedzwa nema microorganisms, uye kunyatso ratidza zviri mukati meiyo organic zvinhu mumvura yakasviba.
3. Kuonekwa kweChroma
Rudzi rwekudhinda uye kudhayira mvura ine tsvina ine kumwe kurudziro kuziso remunhu. Kuonekwa kweChroma kunogona kuratidza mwero wechroma mumvura yetsvina uye kuve neimwe rondedzero yechinangwa chechiyero chekusvibiswa mukudhinda uye kudhaya tsvina yemvura.
4. pH kukosha kuona
pH kukosha chiratidzo chakakosha kuratidza acidity uye alkalinity yemvura yakasviba. Kurapwa kwebiological, pH kukosha kune yakakura kukanganisa. Kazhinji kutaura, kukosha kwepH kunofanirwa kudzorwa pakati pe6.5-8.5. Kunyanya kukwira kana kuderera kunokanganisa kukura uye metabolic zviitiko zvezvipenyu.
5. Ammonia nitrogen yekuona
Ammonia nitrogen chiratidzo chakajairika mukudhinda uye kudhaya tsvina yemvura, uye zvakare iri imwe yeakakosha organic nitrogen zviratidzo. Icho chigadzirwa chekuora kwe organic nitrogen uye inorganic nitrogen kuita ammonia mukudhinda uye kudhaya tsvina yemvura. Yakawandisa ammonia nitrogen inotungamira mukuunganidzwa kwe nitrogen mumvura, izvo zviri nyore kukonzera eutrophication yemitumbi yemvura.
6. Kuonekwa kwe phosphorus yose
Yese phosphorus chinhu chakakosha chekudya munyu mukudhinda nekudhaya mvura yetsvina. Yakawandisa yakazara phosphorus inotungamira kune eutrophication yemitumbi yemvura uye kukanganisa hutano hwemitumbi yemvura. Iyo yakazara phosphorous mukudhinda nekudhaya mvura yetsvina inonyanya kunobva kudhayi, anobatsira uye mamwe makemikari anoshandiswa mukudhinda nekudhaya maitiro.
Muchidimbu, zviratidzo zvekutarisa zvekudhinda uye kudhayira mvura yetsvina inonyanya kuvhara COD, BOD, chromaticity, pH kukosha, ammonia nitrogen, yakazara phosphorus uye zvimwe zvinhu. Kuburikidza chete nekunyatsoedza zviratidzo izvi uye nekuzvibata nemazvo ndiko kunokwanisa kudzora kusvibiswa kwekudhinda nekudhaya mvura yetsvina.
Lianhua mugadziri ane makore makumi mana eruzivo mukugadzira zviridzwa zvemhando yemvura. Inonyanya kugovera marabhoritariCOD, ammonia nitrogen, yakazara phosphorus, yakazara nitrogen,BOD, simbi inorema, inorganic zvinhu uye zvimwe zviridzwa zvekuyedza. Zviridzwa zvinogona kukurumidza kuburitsa mhedzisiro, zviri nyore kushandisa, uye zvine mhedzisiro chaiyo. Iwo anoshandiswa zvakanyanya mumakambani akasiyana-siyana ane tsvina yekuyerera.
Nguva yekutumira: Oct-24-2024
