I-Cationic polyacrylamide yonyango lwamanzi amdaka anetyuwa ephezulu

Amanzi amdaka anetyuwa ephezulu abhekisa kumanzi amdaka aqulathe izinto eziphilayo kunye nobuncinci be-3.5% (uxinzelelo lobuninzi) iyonke into enyityilisiweyo eqinileyo (TDS). Olu hlobo lwamanzi amdaka luvela kuluhlu olubanzi lwemithombo. Okokuqala, kwimichiza, i-pharmaceutical, i-petroleum, i-papermaking, imveliso yemveliso yobisi, i-canning yokutya kunye nezinye iinkqubo zokuvelisa imveliso, umthamo omkhulu wamanzi amdaka uya kukhutshwa. Amanzi akaqulathanga kuphela iindawo ezininzi eziphezulu zezinto ezingcolisa izinto eziphilayo, kodwa zihamba kunye nesixa esikhulu se-calcium, i-sodium, i-chlorine, i-sulfate kunye nezinye i-ion; okwesibini, ukuze kusetyenziswe ngokupheleleyo ubutyebi bamanzi, izixeko ezininzi eziselunxwemeni zisebenzisa ngokuthe ngqo amanzi olwandle njengamanzi emveliso yemizi-mveliso okanye amanzi okupholisa, kwaye ezinye iindawo zisebenzisa amanzi olwandle ukulwa nomlilo, izindlu zangasese ezigungxulwayo kunye neendlela, Nangona le nxalenye yelindle ayiqulathanga isixa esikhulu sezinto eziyityhefu, kunzima ukunyanga ngenxa yomthamo wamanzi amaninzi kunye nomxholo wetyuwa. Izinto eziphilayo zamanzi amdaka anetyuwa ephezulu zihluka kakhulu kuhlobo kunye neekhemikhali zezinto eziphilayo ngokwenkqubo yokuvelisa, kodwa iityuwa eziqulethwe zininzi Cl-, SO42-, Na +, Ca2 + kunye nezinye iityuwa. Nangona ezi ion zizondlo eziyimfuneko ekukhuleni kwe-microorganisms, zidlala indima ebalulekileyo ekukhuthazeni ukuphendulwa kwe-enzyme, ukugcina ibhalansi ye-membrane kunye nokulawula uxinzelelo lwe-osmotic ngexesha lokukhula kwe-microorganisms, kodwa ukuba ukuxinwa kwezi ion kuphezulu kakhulu, kuya kuthintela kwaye inqanda ii-microorganisms. Isiphumo esinetyhefu. Uxinzelelo oluphezulu lwetyuwa, uxinzelelo oluphezulu lwe-osmotic, kunye nokuchithwa kwamanzi kwiiseli ze-microbial kumanzi amdaka anetyuwa eninzi kubangela ukuhlukana kweeseli zeprotoplasm; imvula yetyuwa inciphisa umsebenzi we-dehydrogenase; i-ion ye-chloride ephezulu inetyhefu kwiibhaktheriya; Udaka kulula ukudada phezulu kwaye lubaleke, ngaloo ndlela luchaphazela kakhulu isiphumo sokusulungekiswa kwenkqubo yonyango yebhayoloji.

Amanzi amdaka anetyuwa ephezulu anokusebenza kombane okuphezulu, ngoko anokuvelisa umsinga onamandla phakathi kwenqanaba le-yin kunye ne-yang nge-electrolysis ukuze kubangele ukusabela kwe-redox yezinto eziyityhefu neziyingozi ukususa ungcoliseko emanzini. I-Electrolysis inokunciphisa ngokufanelekileyo i-COD kumanzi amdaka. , Inokulungelelaniswa okunamandla kugutyulo kunye nesiphumo esihle sokususa, kodwa ukungonakali kukuba iindleko zokusebenza ziphezulu. Indlela ye-electrolytic flocculation method isetyenziselwa ukuphatha amanzi amdaka aphezulu anetyuwa ephuma kwi-shellac synthetic resin production process, engakwaziyo ukunciphisa kuphela i-COD kumanzi amdaka, ikhulise ukucaca, kodwa ibe nesantya esiphezulu sokususa i-BOD, i-TP kunye TN.

Isitshixo kwindlela yokutshintshiselana ye- cationic polyacrylamide inesabelo ilele kwi-ion exchange resin, eyi-polymer ephezulu ye-molecular kunye namaqela asebenzayo, isakhiwo senethiwekhi kunye nokunganyibiliki. I-ion zetsimbi kuyo zichelated kwaye zitshintshwe. Indlela yokutshintshiselana nge-ion ingasetyenziswa njengenkqubo yonyango lwangaphambili lokususa ii-ion ezahlukeneyo zetsimbi kunye nokufezekisa injongo yokukhupha ityuwa esebenzayo. Ukungalungi kwayo kukuba umba oqinileyo omisiweyo kumanzi amdaka uya kuthintela i-resin kwaye wenze iresin ye-cationic polyacrylamide ingasebenzi. Tang Shuhe et al. isetyenzisiwe i-ion exchange resin ukuphatha amanzi amdaka aqukethe i-Cr, kwaye ukuxinwa kwe-Cr kumanzi amdaka kwehla ukusuka kwi-1540 mg / L ekuqaleni ukuya kwi-0.5 mg / L emva kokunyanga, ukuhlangabezana nomgangatho wokukhutshwa kazwelonke.


Ixesha lokuposa: Mar-08-2022
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