Zvinoenderana neiyo 2018 edition yeShanghai Municipal Local Standard yeIntegrated Wastewater Discharge (DB31/199-2018), nzvimbo yekuburitsa mvura yetsvina yemuchina wekugadzira magetsi unoshanda neBaosteel Co., Ltd. Nekuda kweizvozvo, iyo ammonia nitrogen discharge limit yakaderedzwa kubva pa10 mg/L kusvika 1.5 mg/L, uye organic matter discharge limit yakadzikiswa kubva pa100 mg/L kusvika 50 mg/L.

Munzvimbo yedhamu remvura yetsaona: Kune madziva maviri emvura etsaona munzvimbo ino. New online otomatiki yekutarisa masisitimu eammonia nitrogen akaiswa kuti agone kuramba achitarisisa mazinga eammonia nitrogen mumadziva emvura yetsaona. Pamusoro pezvo, itsva sodium hypochlorite dosing pombi yakaiswa, iyo yakabatana kune iripo sodium hypochlorite matangi ekuchengetera uye yakavharirwa neammonia nitrogen yekutarisa system. Iyi gadziriso inogonesa otomatiki uye chaiyo dosing kudzora kune ese ari maviri emvura madziva emvura.

Mudrainage treatment system yePhase I yechemikari yekuchenesa mvura chiteshi: Online otomatiki yekutarisisa masisitimu eammonia nitrogen yakaiswa patangi rekujekesa, B1 tangi yemvura yetsvina, B3 marara emvura tangi, B4 tsvina yemvura tangi, uye B5 tangi. Aya masisitimu ekutarisa akavharirwa ne sodium hypochlorite dosing pombi kugonesa otomatiki dosing kutonga mukati mekuita kwemvura yekurapa.

Midziyo Yakashandiswa:

NHNG-3010 Online Automatic Ammonia Nitrogen Monitor

YCL-3100 Intelligent pretreatment system yemhando yemvura sampling

Kuti vatevedzere zvakagadziridzwa zviyero zvekurasa, Baosteel Co., Ltd.'s gwenya rekugadzira magetsi rakaisa ammonia nitrogen yekubvisa uye michina yepretreatment panzvimbo inorasa mvura yetsvina. Iyo iripo yekuchenesa mvura yetsvina system yakaitwa optimization uye kuvandudzwa kuti ive nechokwadi chekuti zvese ammonia nitrogen uye organic zvinhu zvinogadziriswa zvinogoneka kusangana nezvinodiwa zvekuburitsa. Kuvandudzwa uku kunovimbisa kurapwa kwemvura yetsvina panguva uye kunoshanda uye kunoderedza zvakanyanya njodzi dzezvakatipoteredza dzine chekuita nekubuda kwetsvina yakawandisa.

Nei zvichidikanwa kutarisa mazinga eammonia nitrogen pamigero yemvura yezvigayo zvesimbi?

Kuyera ammonia nitrogen (NH₃-N) pakubuda kwesimbi pachigayo kwakakosha pakuchengetedza kwezvakatipoteredza uye kutevedzera mirau, sezvo maitiro ekugadzira simbi anoburitsa mvura yetsvina ine ammonia inoisa njodzi huru kana ikadzingwa zvisina kunaka.

Chekutanga, ammonia nitrogen ine chepfu zvakanyanya kune zvipenyu zvemumvura. Kunyangwe pakudzika kwakadzika, zvinogona kukuvadza magill ehove uye humwe hupenyu hwemvura, kukanganisa mashandiro avo emagetsi, uye kutungamirira kukufa kwevanhu vakawanda. Uyezve, kuwandisa kweammonia mumitumbi yemvura kunokonzeresa eutrophication-maitiro apo ammonia inoshandurwa kuita nitrate nemabhakitiriya, zvichikonzera kuwanda kwealgae. Iyi algal bloom inopedza okisijeni yakanyungudika mumvura, ichigadzira "nzvimbo dzakafa" umo zvipenyu zvakawanda zvemumvura hazvigone kurarama, zvakanyanya 破坏ing ecosystems yemumvura.

Chechipiri, zvigayo zvesimbi zvakasungwa zviri pamutemo nemitemo yenyika nedzenharaunda (semuenzaniso, China's Integrated Wastewater Discharge Standard, EU's Industrial Emissions Directive). Iyi mipimo inoisa miganho yakasimba pahuwandu hweammonia nitrogen mumvura yakaraswa. Kugaro tarisa kunoita kuti zvigayo zvizadzise miganhu iyi, kudzivirira faindi, kumiswa basa, kana zvikwereti zvepamutemo zvinokonzerwa nekusatevedzera.

Pamusoro pezvo, kuyerwa kweammonia nitrogen kunoshanda sechiratidzo chikuru chekugona kwechigayo chekuchenesa mvura yetsvina. Kana mazinga eammonia akadarika mwero, inotaridza zvingangoitika mukurapwa (semuenzaniso, kusashanda zvakanaka kwezvikamu zvekurapa zvipenyu), zvichibvumira mainjiniya kuona nekugadzirisa matambudziko nekukasika- kudzivirira mvura isina kucheneswa kana kusabatwa zvisina kunaka kupinda nharaunda.

Muchidimbu, kutarisisa ammonia nitrogen pakubuda kwesimbi chigayo chiitiko chakakosha kuderedza kukuvadzwa kwezvakatipoteredza, kutevedzera zvinodiwa nemutemo, uye kuchengetedza kuvimbika kwemaitiro ekuchenesa mvura.