Niki ukwiye kwitondera mugihe ukoresheje metero BOD5?

Niki ukwiye kwitondera mugihe ukoreshejeIsesengura rya BOD:
1. Kwitegura mbere yo kugerageza
1. Fungura amashanyarazi ya biohimiki incubator amasaha 8 mbere yubushakashatsi, hanyuma ugenzure ubushyuhe bwo gukora bisanzwe kuri 20 ° C.
2. Shira amazi yubushakashatsi bwamazi, amazi yo gukingira hamwe namazi yo gutera inshinge muri incubator hanyuma ubigumane mubushyuhe burigihe kugirango ukoreshwe nyuma.
2. Amazi yicyitegererezo
1. Iyo pH agaciro k'icyitegererezo cy'amazi kitari hagati ya 6.5 na 7.5; banza ukore ikizamini gitandukanye kugirango umenye ingano isabwa ya acide hydrochloric (5.10) cyangwa sodium hydroxide yumuti (5.9), hanyuma uhindure urugero, utitaye ko hari imvura igwa. Iyo acide cyangwa alkalineya yintangarugero yamazi ari ndende cyane, alkali cyangwa aside irike cyane irashobora gukoreshwa mukutabogama, byemeza ko amafaranga atari munsi ya 0.5% yubunini bwikitegererezo cyamazi.
2. Kuburugero rwamazi arimo chlorine yubusa, chlorine yubusa muri rusange izashira nyuma yo gusigara amasaha 1-2. Kuburugero rwamazi aho chlorine yubusa idashobora kubura mugihe gito, hashobora kongerwaho urugero rwumuti wa sodium sulfite kugirango ukureho chlorine yubusa.
3. Icyitegererezo cy’amazi yakusanyirijwe mu mazi afite ubushyuhe buke bw’amazi cyangwa ibiyaga bya eutropique bigomba gushyuha byihuse kugeza kuri 20 ° C kugirango wirukane ogisijeni yashonze cyane mu byitegererezo by’amazi. Bitabaye ibyo, ibisubizo by'isesengura bizaba bike.
Iyo ufashe ingero ziva mumazi afite ubushyuhe bwinshi bwamazi cyangwa ahantu hasohokera amazi y’amazi, bigomba gukonjeshwa vuba kugeza kuri 20 ° C, bitabaye ibyo ibisubizo byisesengura bikaba byinshi.
4. Niba icyitegererezo cyamazi agomba gupimwa kidafite mikorobe cyangwa ibikorwa bya mikorobe bidahagije, icyitegererezo kigomba guterwa. Nkubwoko bukurikira bwamazi mabi yinganda:
a. Amazi mabi yinganda atigeze akoreshwa mubinyabuzima;
b. Ubushyuhe bwinshi n'umuvuduko mwinshi cyangwa amazi mabi yanduye, hakwiye kwitabwaho cyane amazi y’amazi ava mu nganda zitunganya ibiribwa n’imyanda yo mu ngo ivuye mu bitaro;
c. Amazi mabi yo mu nganda acide na alkaline;
d. Amazi mabi yinganda afite agaciro ka BOD5;
e. Amazi mabi yinganda arimo ibintu byuburozi nkumuringa, zinc, gurş, arsenic, kadmium, chromium, cyanide, nibindi.
Amazi mabi yinganda yavuzwe haruguru agomba gutunganywa na mikorobe ihagije. Inkomoko ya mikorobe nizi zikurikira:
(1) Indengakamere yimyanda mishya itunganijwe ishyizwe kuri 20 ° C mumasaha 24 kugeza 36;
(2) Amazi yabonetse mugushungura icyitegererezo akoresheje impapuro zungurura nyuma yikizamini kibanziriza. Aya mazi arashobora kubikwa kuri 20 ℃ ukwezi kumwe;
(3) Imyanda iva mu bimera bitunganya imyanda;
(4) Amazi yinzuzi cyangwa ikiyaga kirimo imyanda yo mumijyi;
(5) Ubwoko bwa bagiteri butangwa nigikoresho. Gupima 0.2g ya bacteri, uyisuke muri 100ml y'amazi meza, koga ubudahwema kugeza ibibyimba bitatanye, ubishyire muri incubator kuri 20 ° C hanyuma ubireke bihagarare amasaha 24-48, hanyuma ufate ndengakamere.