Malinga ndi kope la 2018 la Shanghai Municipal Local Standard for Integrated Wastewater Discharge (DB31/199-2018), malo otulutsira madzi oyipa a malo opangira magetsi oyendetsedwa ndi Baosteel Co., Ltd. Chifukwa chake, malire otulutsa ammonia nayitrogeni achepetsedwa kuchoka pa 10 mg/L kufika pa 1.5 mg/L, ndipo malire otulutsa organic atsitsidwa kuchoka pa 100 mg/L mpaka 50 mg/L.

Pamalo a dziwe lamadzi ngozi: Pali maiwe awiri amadzi angozi mderali. Njira zatsopano zowunikira pa intaneti za ammonia nitrogen zakhazikitsidwa kuti zithandizire kuyang'anira mosalekeza kuchuluka kwa nayitrogeni wa ammonia m'madziwe amadzi angozi. Kuphatikiza apo, pampu yatsopano ya sodium hypochlorite dosing yakhazikitsidwa, yomwe imalumikizidwa ndi matanki osungira a sodium hypochlorite omwe alipo ndipo amalumikizidwa ndi ammonia nitrogen monitoring system. Kukonzekera kumeneku kumathandizira kuwongolera kachulukidwe koyenera komanso kolondola kwa maiwe amadzi angozi.

Mu drainage treatment system ya Phase I ya malo opangira madzi opangira mankhwala: Njira zowunikira pa intaneti za ammonia nitrogen zayikidwa pa thanki yowunikira, thanki yamadzi atayira ya B1, thanki yamadzi atayira ya B3, thanki yamadzi atayira ya B4, ndi thanki ya B5. Njira zowunikirazi zimalumikizidwa ndi pampu ya sodium hypochlorite dosing kuti athe kuwongolera madontho pawokha panthawi yonse yochizira ngalande.

Zida Zogwiritsidwa Ntchito:

NHNG-3010 Online Automatic Ammonia Nitrogen Monitor

YCL-3100 Intelligent pretreatment system yamasampula amadzi

Kuti zitsatire miyezo yaposachedwa yotulutsa magetsi, fakitale ya Baosteel Co., Ltd. Njira yopangira madzi otayira yomwe ilipo yakonzedwa ndikukonzedwanso kuti zitsimikizire kuti ammonia nayitrogeni ndi zinthu za organic zimathandizidwa bwino kuti zikwaniritse zofunikira zatsopano zotulutsa. Zosinthazi zimatsimikizira kuthira madzi onyansa munthawi yake komanso moyenera komanso kumachepetsa kwambiri kuopsa kwa chilengedwe komwe kumakhudzana ndi kutayira kwamadzi onyansa kwambiri.

Chifukwa chiyani ndikofunikira kuyang'anira kuchuluka kwa nayitrogeni wa ammonia pamitsuko yazitsulo zazitsulo?

Kuyeza nayitrogeni wa ammonia (NH₃-N) pazitsulo zazitsulo ndizofunikira kwambiri pachitetezo cha chilengedwe komanso kutsata malamulo, chifukwa njira zopangira zitsulo zimapanga madzi onyansa okhala ndi ammonia omwe amaika chiopsezo chachikulu ngati atatayidwa molakwika.

Choyamba, ammonia nayitrogeni ndi poizoni kwambiri kwa zamoyo zam'madzi. Ngakhale m'malo otsika kwambiri, zimatha kuwononga matumbo a nsomba ndi zamoyo zina zam'madzi, kusokoneza kagayidwe kawo kagayidwe, ndikupangitsa kufa kwa anthu ambiri. Komanso, kuchuluka kwa ammonia m'madzi kumayambitsa eutrophication - njira yomwe ammonia imasinthidwa kukhala nitrates ndi mabakiteriya, zomwe zimapangitsa kuti algae azichulukirachulukira. Chimake cha algalchi chimachepetsa mpweya wosungunuka m'madzi, ndikupanga "zigawo zakufa" momwe zamoyo zambiri za m'madzi sizingathe kukhala ndi moyo, kuwononga kwambiri zamoyo zam'madzi.

Kachiwiri, mphero zazitsulo zimamangidwa movomerezeka ndi malamulo adziko komanso amderalo (mwachitsanzo, China's Integrated Wastewater Discharge Standard, EU's Industrial Emissions Directive). Miyezo iyi imayika malire okhwima pa kuchuluka kwa ammonia nayitrogeni m'madzi otayidwa. Kuwunika pafupipafupi kumawonetsetsa kuti mphero zikwaniritsa malire awa, kupeŵa chindapusa, kuyimitsidwa kwa ntchito, kapena mangawa obwera chifukwa chakusamvera.

Kuphatikiza apo, kuyeza kwa ammonia nayitrogeni kumagwira ntchito ngati chisonyezero champhamvu cha makina oyeretsera madzi oipa a chigayo. Ngati kuchuluka kwa ammonia kupitilira muyezo, kumawonetsa zovuta zomwe zingachitike pochiza (mwachitsanzo, kusagwira bwino ntchito kwa mayunitsi opangira mankhwala achilengedwe), kulola mainjiniya kuzindikira ndi kukonza mavuto mwachangu - kuletsa madzi otayidwa osayeretsedwa kapena osakonzedwa bwino kulowa m'chilengedwe.

Mwachidule, kuyang'anira ammonia nayitrogeni pakutuluka kwazitsulo ndi njira yofunika kwambiri yochepetsera kuwonongeka kwa chilengedwe, kutsatira malamulo, ndikusunga kudalirika kwa njira zoyeretsera madzi oyipa.