Zvichienderana neShanghai Municipal Local Standard for Integrated Wastewater Discharge (DB31/199-2018) ye2018, nzvimbo inoburitsa mvura yakasviba yemuchina wekugadzira magetsi unoshandiswa neBaosteel Co., Ltd. iri munzvimbo ine mvura inonaya mvura yakawanda. Nekuda kweizvozvo, muganho wekuburitsa ammonia nitrogen waderedzwa kubva pa10 mg/L kusvika pa1.5 mg/L, uye muganho wekuburitsa zvinhu zvipenyu waderedzwa kubva pa100 mg/L kusvika pa50 mg/L.

Munzvimbo yedziva remvura rakaitirwa tsaona: Kune madziva maviri emvura akapararira munzvimbo iyi. Masisitimu matsva ekutarisa otomatiki e ammonia nitrogen akaiswa online kuti agone kutarisa nguva dzose huwandu hwe ammonia nitrogen mumadziva emvura akapararira. Pamusoro pezvo, pombi itsva yekuongorora sodium hypochlorite yakaiswa, iyo yakabatana nematangi ekuchengetedza sodium hypochlorite aripo uye yakabatana ne ammonia nitrogen monitoring system. Iyi gadziriro inogonesa kudzora otomatiki uye kwakarurama kwekuongorora dosing mumadziva ese emvura akapararira.

Munzira yekurapa mvura yechikamu chekutanga chenzvimbo yekurapa mvura yemakemikari: Masisitimu ekutarisa otomatiki e ammonia nitrogen akaiswa patangi rekuchenesa, tangi remvura yakasviba reB1, tangi remvura yakasviba reB3, tangi remvura yakasviba reB4, uye tangi reB5. Masisitimu aya ekutarisa akabatana nepombi ye sodium hypochlorite dosing kuti igone kudzora otomatiki dosing mukati menzira yese yekurapa mvura yakasviba.

Zvishandiso Zvakashandiswa:

NHNG-3010 Online Automatic Ammonia Nitrogen Monitor

YCL-3100 Sisitimu yekurapa yakangwara yekutora sampuro dzemhando yepamusoro yemvura

Kuti zvienderane nezvinodiwa pakuburitsa mvura, Baosteel Co., Ltd. yakaisa michina yekubvisa ammonia nitrogen uye yekuchenesa mvura isati yabuda panzvimbo inoburitsa mvura yakasviba. Sisitimu yekuchenesa mvura yakasviba iripo yakagadziriswa kuti ive nechokwadi chekuti ammonia nitrogen nezvinhu zvipenyu zvinogadziriswa zvinobudirira kuti zvienderane nezvinodiwa zvitsva zvekuburitsa mvura yakasviba. Kuvandudzwa uku kunovimbisa kurapwa kwemvura yakasviba nenguva uye zvinobudirira uye kunoderedza zvakanyanya njodzi dzezvakatipoteredza dzine chekuita nekubuda kwemvura yakasviba zvakanyanya.

Sei zvichikosha kutarisa huwandu hweammonia nitrogen panzvimbo dzinobuda mvura mumigodhi yesimbi?

Kuyera ammonia nitrogen (NH₃-N) pamagetsi esimbi kwakakosha pakuchengetedzwa kwezvakatipoteredza uye pakutevedzera mitemo, sezvo maitiro ekugadzira simbi achigadzira mvura yakasviba ine ammonia iyo inokonzera njodzi huru kana ikasaburitswa zvakanaka.

Chekutanga, ammonia nitrogen ine chepfu yakawanda kuzvisikwa zvemumvura. Kunyangwe kana yakawandisa, inogona kukuvadza magill ehove nezvimwe zvipenyu zvemumvura, kukanganisa mashandiro azvo ekugadzirisa muviri, uye kutungamira kufa kwevanhu vazhinji. Uyezve, ammonia yakawandisa mumvura inokonzera eutrophication - maitiro apo ammonia inoshandurwa kuita nitrates nemabhakitiriya, zvichikonzera kukura kwakawandisa kwealgae. Kutumbuka uku kwealgal kunopedza okisijeni yakanyungudutswa mumvura, zvichiita kuti "nzvimbo dzakafa" uko zvipenyu zvakawanda zvemumvura zvisingagone kurarama, zvichikanganisa zvakanyanya ecosystems yemumvura.

Chechipiri, zvigayo zvesimbi zvinosungirwa zviri pamutemo nemutemo wenyika nemunharaunda wezvakatipoteredza (semuenzaniso, China's Integrated Wastewater Discharge Standard, EU's Industrial Emissions Directive). Mitemo iyi inoisa miganhu yakasimba pakuwanda kweammonia nitrogen mumvura yakasviba inoburitswa. Kugara uchitarisa kunoita kuti zvigayo zvisvike pamiganhu iyi, zvichidzivirira faindi, kumiswa kwekushanda, kana zvikwereti zvepamutemo zvinokonzerwa nekusatevedzera mitemo.

Pamusoro pezvo, kuyerwa kweammonia nitrogen kunoshanda sechiratidzo chikuru chekushanda zvakanaka kwehurongwa hwekuchenesa mvura yakasviba hwemuchina wekugadzira. Kana huwandu hweammonia hukadarika mwero wezvinodiwa, zvinoratidza matambudziko anogona kuitika mukugadzirisa (semuenzaniso, kusashanda zvakanaka kwemayuniti ekurapa ebhayoloji), zvichibvumira mainjiniya kuona nekugadzirisa matambudziko nekukurumidza—kudzivirira mvura yakasviba isina kurapwa kana isina kurapwa zvakanaka kuti isapinde munharaunda.

Muchidimbu, kutarisa ammonia nitrogen pakubuda kwesimbi mumigodhi inzira huru yekuderedza kukuvara kwezvakatipoteredza, kutevedzera zvinodiwa nemutemo, uye kuchengetedza kuvimbika kwemaitiro ekurapa mvura yakasviba.