Tekanyetso ea naha ea China bakeng sa polyaluminium chloride ke GBT22627-2022

I. Semelo le Boemo bo Tloaelehileng

1.Ho lokolloa le ho kenya ts'ebetsong

E fanoe ke Tsamaiso ea Naha bakeng sa Taolo ea Mmaraka ka la 9 Hlakubele 2022 mme ea kengoa tšebetsong ka molao ka la 1 Mphalane 2022, e nkela sebaka sa khale sa GB/T 22627-2014.

E loketse bakeng sa Metsi a Liindasteri phepelo, metsi a litšila, likhoerekhoere le sludge treatment polyaluminium chloride (PAC) lihlahisoa.

2.Lipheo tse tloaelehileng

Re tla kopanya litlhoko tsa boleng ba sehlahisoa, re matlafatse matšoao a polokeho joalo ka litšepe tse boima le likokoana-hloko, 'me re khothaletse maemo a maemo a ts'ireletso. Phekolo ea Metsi indasteri.

Ⅱ.Litlhoko tsa mantlha tsa tekheniki

Sehlopha sa lihlahisoa le ponahalo

Mokelikeli: mokelikeli o pepeneneng o se nang 'mala ho isa ho o mosehla o sootho; solid: bosoeu ho isa ho bosehla bo sootho likaroloana/phofo, ha bo na likotola, ha bo na monko.

Matšoao a bohlokoa a ts'ebetso

Eketsa le ho lokisa matšoao

Eketsa: boima ba 'mele (metsi), lintho tsa tlhahlobo ea ammonia nitrogen; matlafatsa: moeli oa tšepe e boima (arsenic, lead, cadmium, joalo-joalo). Tlhaloso ea thepa e tala: tlhahiso ea hydrochloric acid e lokela ho lumellana le maemo a indasteri a GB/T 320, haeba ho sebelisoa litšila tse kotsi, ho hlokahala tumello ea tikoloho. Eketsa: boima ba 'mele (metsi), lintho tsa tlhahlobo ea ammonia nitrogen; matlafatsa: moeli oa tšepe e boima (arsenic, lead, cadmium, joalo-joalo). Tlhaloso ea thepa e tala: tlhahiso ea hydrochloric acid e lokela ho lumellana le maemo a indasteri a GB/T 320, haeba ho sebelisoa litšila tse kotsi, tumello ea tikoloho e lokela ho fumanoa.

Ⅲ.Mokhoa oa liteko le netefatso ea boleng

1.Ho lemoha tšebelisano-'moho ea mekhoa e mengata

Likahare tsa aluminium: titration; letsoai: spectrophotometry; heavy metals: spectrometry ea ho monya athomo.

Lenane la sehlahisoa sa mokelikeli le tla baloa ho latela boleng ba moeli oa Al₂O₃ content ≥ 10%.

2.Ts'ebetso ea ho laola boleng

Likhoebo li hloka ho etsa tlhahlobo ea feme (alumina, degree ea letsoai, pH, joalo-joalo) le tlhahlobo e felletseng ea khafetsa.

Ⅳ.Lipehelo, polokelo le lipalangoang le polokeho

1. tlhokahalo ea ho paka

Mokelikeli: ho tiisa moqomo oa polyethylene; tiileng: liphutheloana tse peli (filimi ea ka hare ea polyethylene + mokotla oa ka ntle), e bontšang lebitso la sehlahisoa, mohlala le letsatsi la tlhahiso.

2. Maemo a polokelo le lipalangoang

Boloka hole le leseli, moea o kenang, tikoloho e omileng, hole le mohloli oa mollo; Bophelo ba sethala sa metsi ke likhoeli tse 3, likhoeli tse 12 tse tiileng.

Ⅴ.Phapang ho latela maemo a metsi a nooang

• Sebaka sa kopo: GB/T 22627-2022 ke bakeng sa phekolo ea metsi ea indasteri, ha metsi a nooang a malapeng a tlas'a GB 15892-2020 (mohlala, moeli oa arsenic ≤0001%).
• Phapang ea matšoao: Likahare tsa sehlopha sa indasteri Al₂O₃ (≥28%) li tlase ho feta tsa metsi a nooang (≥29%), 'me moeli oa litšepe tse boima o phutholohile haholoanyane.

Vi. Bohlokoa ba ts'ebetsong ea litekanyetso

1. Ntlafatso ea indasteri

Felisa matla a tlhahiso ea morao-rao, ho khothaletsa nts'etsopele ea theknoloji e sebetsang hantle le e se nang tikoloho ea PAC.

2. Netefatso ea boleng ba metsi

Laola ka thata lintho tse kotsi ho fokotsa kotsi ea tšilafalo ea bobeli.

3. Boemo ba 'maraka

Fokotsa lihlahisoa tsa maemo a tlase 'me u sireletse litokelo le lithahasello tsa basebelisi ba tlase.

GB/T 22627-2022 e theha tekanyetso bakeng sa tlhahiso le ts'ebeliso ea polyaluminium chloride ka matšoao a mahlale a tekheniki le lits'ebetso tse matla tsa tlhahlobo, e tšoaeang tsoelo-pele e kholo ea ho hokahanya litekanyetso tsa lik'hemik'hale tsa China tsa kalafo ea metsi le litloaelo tsa machabeng. Likhoebo li lokela ho tsamaisana le lintlafatso tse tloaelehileng, ho ntlafatsa lits'ebetso tsa tlhahiso, le ho khothaletsa ka kopanelo nts'etsopele ea tikoloho ea ho hloekisa metsi a matala.