Dị ka mbipụta 2018 nke Shanghai Municipal Local Standard for Integrated Wastewater Discharge (DB31 / 199-2018), mwepu mmiri na-ekpofu mmiri nke ụlọ ọrụ ike nke Baosteel Co., Ltd. na-arụ ọrụ dị na mpaghara mmiri dị nro. N'ihi nke a, a na-ebelata oke mwepu nitrogen amonia site na 10 mg/L ruo 1.5 mg/L, ewetula oke mkpofu ihe organic site na 100 mg/L ruo 50 mg/L.

Na mpaghara ọdọ mmiri mberede: Enwere ọdọ mmiri mmiri mberede abụọ na mpaghara a. E tinyela sistemụ nleba anya akpaka ọhụrụ n'ịntanetị maka nitrogen amonia iji mee ka nlele na-aga n'ihu na ọkwa amonia nitrogen na ọdọ mmiri mmiri mberede. Na mgbakwunye, etinyela mgbapụta mmiri ọgwụ sodium hypochlorite ọhụrụ, nke jikọtara ya na tankị nchekwa sodium hypochlorite dị ugbu a yana jikọtara ya na sistemụ nleba anya nitrogen amonia. Nhazi a na-enyere aka na akpaaka na njikwa dosing ziri ezi maka ọdọ mmiri mmiri mberede abụọ.

N'ime usoro ọgwụgwọ drainage nke Phase I nke ọdụ mmiri mmiri mmiri: E tinyela usoro nlekota akpaka n'ịntanetị maka amonia nitrogen na tankị nkọwa, tankị mmiri mkpofu B1, tank mmiri mkpofu B3, tankị mmiri mkpofu B4, na tank B5. A na-ejikọta sistemu nlekota ndị a na pọmpụ dosing sodium hypochlorite iji mee ka nchịkwa dose ahụ na-akpaghị aka n'oge usoro ọgwụgwọ drainage niile.

Ngwa eji eme ihe:

NHNG-3010 Online Akpaaka Amonia Nitrogen Monitor

YCL-3100 Sistemụ pretreatment nwere ọgụgụ isi maka nlele ogo mmiri

Iji rube isi n'ụkpụrụ mwepu emelitere, ụlọ ọrụ na-emepụta ike nke Baosteel Co., Ltd arụnyela ihe mgbapụta amonia nitrogen na ihe eji eme ihe n'ebe a na-ekpofu mmiri. Usoro ọgwụgwọ mmiri mkpofu dị ugbu a enwetala njikarịcha na nrụzigharị iji hụ na a na-emeso ma amonia nitrogen na organic okwu nke ọma iji zute ihe ọhụrụ a chọrọ. Nkwalite ndị a na-ekwe nkwa ọgwụgwọ mmiri mkpofu n'oge na nke ọma ma na-ebelata nke ọma ihe egwu gburugburu ebe obibi jikọtara ya na mwepu oke mmiri.

Kedu ihe kpatara na ọ dị mkpa iji nyochaa ọkwa amonia nitrogen na ebe a na-agbapụta mmiri nke igwe igwe ígwè?

Ịtụ amonia nitrogen (NH₃-N) na igwe igwe igwe dị oke mkpa maka ma nchekwa gburugburu ebe obibi yana nrube isi n'usoro iwu, dịka usoro mmepụta ígwè na-ebute mmiri mkpofu nwere amonia nke na-ebute nnukwu ihe egwu ma ọ bụrụ na ewepụrụ ya n'ụzọ na-ekwesịghị ekwesị.

Nke mbụ, nitrogen amonia na-egbu egbu maka ihe ndị dị n'ime mmiri. Ọbụlagodi na obere mkpokọta, ọ nwere ike imebi azụ azụ na ndụ mmiri ndị ọzọ, mebie ọrụ metabolic ha, ma bute ọnwụ oke. Ọzọkwa, oke amonia n'ime ahụ mmiri na-ebute eutrophication-usoro ebe nje bacteria na-eme ka amonia ghọọ nitrates, na-eme ka algae na-eto eto. Osisi algal a na-eme ka ikuku oxygen gbazee n'ime mmiri, na-emepụta "mpaghara ndị nwụrụ anwụ" ebe ọtụtụ ihe ndị dị ndụ na-enweghị ike ịdị ndụ, na-eme ka ihe ndị dị ndụ na mmiri dị egwu.

Nke abuo, a na-ejikọta igwe igwe igwe nchara n'ụzọ iwu site na ụkpụrụ gburugburu ebe obibi nke obodo na nke mpaghara (dịka ọmụmaatụ, ọkọlọtọ mkpofu mmiri nke China, ntuziaka EU Industrial Emissions). Ụkpụrụ ndị a na-esetịpụ oke ike na ntinye nitrogen amonia n'ime mmiri mkpofu awụsara. Nleba anya mgbe niile na-eme ka igwe igwe mejuo oke ndị a, na-ezere nra, nkwusioru arụ ọrụ, ma ọ bụ ụgwọ iwu sitere na enweghị nnabata.

Na mgbakwunye, nha nitrogen amonia na-arụ ọrụ dị ka isi ihe na-egosi arụmọrụ nke sistemu mmiri mkpofu nke igwe igwe. Ọ bụrụ na ọkwa amonia gafere ọkọlọtọ, ọ na-egosi nsogbu ndị nwere ike na usoro ọgwụgwọ (dịka ọmụmaatụ, arụghị ọrụ nke ngalaba ọgwụgwọ ndu), na-enye ndị injinia aka ịchọpụta na dozie nsogbu ozugbo-na-egbochi mmiri mkpofu na-adịghị edozi ma ọ bụ nke na-adịghị mma ịbanye na gburugburu ebe obibi.

Na nchịkọta, ileba anya na amonia nitrogen na igwe igwe igwe na-apụ apụ bụ omume dị mkpa iji belata mmebi gburugburu ebe obibi, na-agbaso iwu iwu, na ịnọgide na-enwe ntụkwasị obi nke usoro ọgwụgwọ mmiri.