Kodi muyenera kulabadira chiyani mukamagwiritsa ntchito BOD5 mita?

Zomwe muyenera kuziganizira mukamagwiritsa ntchitoBOD analyzer:
1. Kukonzekera musanayese
1. Yatsani mphamvu ya chofungatira cha biochemical maola 8 chisanachitike, ndikuwongolera kutentha kuti zigwire ntchito bwino pa 20°C.
2. Ikani madzi oyezera oyezera, madzi otsekemera ndi madzi otsekemera otsekemera mu chofungatira ndikusunga kutentha kosasinthasintha kuti mugwiritse ntchito mtsogolo.
2. Kukonzekera kwa madzi
1. Pamene pH mtengo wa chitsanzo cha madzi suli pakati pa 6.5 ndi 7.5; choyamba chitani mayeso apadera kuti mudziwe kuchuluka kofunikira kwa hydrochloric acid (5.10) kapena sodium hydroxide solution (5.9), ndiyeno muchepetse chitsanzocho, posatengera kuti pali mvula. Pamene acidity kapena alkalinity ya chitsanzo cha madzi ndi apamwamba kwambiri, mkulu-concentration alkali kapena asidi angagwiritsidwe ntchito neutralization, kuonetsetsa kuti kuchuluka kwake si osachepera 0.5% ya voliyumu ya madzi chitsanzo.
2. Pa zitsanzo za madzi okhala ndi klorini waulere pang'ono, klorini waulere nthawi zambiri amatha atasiyidwa kwa maola 1-2. Kwa zitsanzo za madzi kumene klorini waulere sangathe kutha pakapita nthawi yochepa, yankho loyenera la sodium sulfite likhoza kuwonjezeredwa kuchotsa klorini yaulere.
3. Zitsanzo za madzi zomwe zimatengedwa m'madzi otsika kutentha kapena nyanja za eutrophic ziyenera kutenthedwa mofulumira kufika pafupifupi 20 ° C kuti atulutse mpweya wosungunuka wosungunuka m'madzi. Apo ayi, zotsatira za kusanthula zidzakhala zochepa.
Mukatenga zitsanzo kuchokera m'madzi omwe ali ndi kutentha kwakukulu kwa madzi kapena malo otayira madzi otayira, ayenera kuzizira mofulumira mpaka pafupifupi 20 ° C, apo ayi zotsatira zake zidzakhala zapamwamba.
4. Ngati chitsanzo cha madzi kuti chiyesedwe chilibe tizilombo toyambitsa matenda kapena tizilombo toyambitsa matenda tosakwanira, chitsanzocho chiyenera kuperekedwa. Monga mitundu iyi yamadzi otayira m'mafakitale:
a. Madzi otayira m'mafakitale omwe sanagwiritsidwe ntchito ndi biochemical;
b. Kutentha kwakukulu ndi kuthamanga kwapamwamba kapena madzi otayira osawilitsidwa, chidwi chapadera chiyenera kuperekedwa kwa madzi otayira kuchokera ku mafakitale opangira chakudya ndi zimbudzi zapakhomo kuchokera kuzipatala;
c. Kwambiri acidic ndi zamchere mafakitale zinyalala mafakitale;
d. Madzi owonongeka a mafakitale okhala ndi mtengo wapamwamba wa BOD5;
e. Madzi owonongeka a mafakitale okhala ndi zinthu zapoizoni monga mkuwa, zinki, lead, arsenic, cadmium, chromium, cyanide, etc.
Madzi otayika omwe ali pamwambawa amayenera kuthandizidwa ndi tizilombo tokwanira. Magwero a ma microorganisms ndi awa:
(1) The supernatant ya zimbudzi zatsopano za m'nyumba zosagwiritsidwa ntchito zoyikidwa pa 20 ° C kwa maola 24 mpaka 36;
(2) Madzi omwe amapezedwa mwa kusefa chitsanzocho kupyolera mu pepala la fyuluta pambuyo pa mayesero apitawo. Madzi awa akhoza kusungidwa pa 20 ℃ kwa mwezi umodzi;
(3) Nyansi za m’zimbudzi;
(4) Madzi a mtsinje kapena nyanja okhala ndi zimbudzi za m’tauni;
(5) Mitundu ya bakiteriya yoperekedwa ndi chida. Kulemera kwa 0,2g ya kupsyinjika kwa bakiteriya, kutsanulira mu 100ml ya madzi oyera, kusonkhezera mosalekeza mpaka zotupa zitabalalika, ziyikani mu chofungatira pa 20 ° C ndikuzisiya kwa maola 24-48, kenaka mutenge supernatant.