Yintoni i-Biochemical Oxygen Demand (BOD)?
Imfuno ye-Oxygen ye-Biochemical (BOD) Ikwabizwa ngokuba yimfuno ye-oksijini ye-biochemical. Isalathiso esibanzi esibonisa umxholo wezinto ezifuna i-oxygen ezifana ne-organic compounds emanzini. Xa i-organic matter equlethwe emanzini idibana nomoya, iboliswa yi-aerobic microorganisms, kwaye ubungakanani beoksijini efunekayo ukuyenza i-inorganic okanye i-gasified ibizwa ngokuba yimfuno ye-oksijini ye-biochemical, echazwe kwi-ppm okanye i-mg/L. Okukhona ixabiso liphezulu, kokukhona ungcoliseko lwendalo emanzini kunye nongcoliseko oluqatha. Enyanisweni, ixesha lokubola ngokupheleleyo kwezinto eziphilayo ziyahluka ngohlobo lwayo kunye nobuninzi, uhlobo kunye nobuninzi be-microorganisms, kunye nohlobo lwamanzi. Kudla ngokuthatha amashumi okanye amakhulu eentsuku ukuba i-oxidize ngokupheleleyo kwaye ibole. Ngaphezu koko, Ngamanye amaxesha ngenxa yempembelelo yesinyithi esinzima kunye nezinto eziyityhefu emanzini, imisebenzi ye-microorganisms iyathintelwa kwaye ide ibulawe. Ke ngoko, kunzima ukulinganisa iBOD ngokuchanekileyo. Ukuze ucuthe ixesha, imfuno ye-oksijini yeentsuku ezintlanu (BOD5) isetyenziswa ngokubanzi njengomgangatho woqikelelo olusisiseko lwezinto ezingcolisa indalo emanzini. I-BOD5 iphantse ilingane ne-70% yokusetyenziswa kwe-oksijini ukwenzela ukubola okupheleleyo kwe-oxidative. Ngokuqhelekileyo, imilambo ene-BOD5 engaphantsi kwe-4ppm inokuthiwa ayinangcoliseko.
Uyivavanya njani imfuno ye-oxygen ye-Biochemical?
Isixhobo sokufumanisa i-BOD ekulula ukusisebenza sibaluleke kakhulu ekubhaqweni komgangatho wamanzi. Isixhobo se-BOD5 sikaLianhua samkela i-mercury-free differential pressure (manometric) indlela, enokuvavanya amanzi aqulethe ibhaktheriya ngaphandle kokongeza i-reagents yeekhemikhali, kwaye iziphumo zingaprintwa ngokuzenzekelayo. Itekhnoloji ephambili yamalungelo awodwa omenzi wechiza.
Yintoni i-Chemical Demand ye-Oxygen (COD)?
Imfuno yeoksijini yekhemikhali (COD) sisixa seoksijini efunekayo ukukhupha izingcolisi eziphilayo kunye nezinye izinto ezinciphisa emanzini phantsi kweemeko ezithile ezine-oxidizing agent (efana ne-potassium dichromate okanye i-potassium permanganate), ebonakaliswa ngeemiligram zeoksijini esetyenzisiweyo kwilitha yesampuli yamanzi. inombolo uthe. I-COD luphawu olubalulekileyo oludla ngokusetyenziswa ukuvavanya umgangatho wamanzi. Imfuno ye-oksijini ye-Chemical ineempawu zendlela elula kunye nokuzimisela ngokukhawuleza. I-Potassium chromate, i-agent e-oxidizing, inokukhupha ngokupheleleyo izinto eziphilayo emanzini, kwaye inokwenza i-oxidize nezinye izinto ezinciphisa. I-oxidant potassium permanganate inokukhupha kuphela malunga ne-60% yezinto eziphilayo. Akukho nanye kwezi ndlela zimbini enokubonisa imeko yokwenyani yokuthotywa kwezinto ezingcolisa izinto eziphilayo emanzini, kuba akukho namnye kubo obonisa ubungakanani bezinto eziphilayo ezinokuthi ii-microorganisms zikwazi ukwenza i-oxidize. Ke ngoko, imfuno yeoksijini yebhayoloji isoloko isetyenziswa kuphononongo lomgangatho wamanzi ongcoliswe zizinto eziphilayo.
Okwangoku, ukufumanisa i-COD kuxhaphake kakhulu kunyango lwamanzi, kwaye ifunwa ziifektri, izityalo zogutyulo, oomasipala, imilambo kunye namanye amashishini. Itekhnoloji yokufumanisa iCOD yeLianhua inokukhawuleza ifumane iziphumo ezichanekileyo kwimizuzu engama-20 kwaye isetyenziswa kakhulu.
Ixesha lokuposa: Apr-27-2023
