Kusanthula kwa kuthekera kwakugwiritsa ntchito pochiza madzi otayira m'mafakitale
1. Mawu oyamba
Kuwonongeka kwa zitsulo zolemera kumatanthawuza kuipitsa kwa chilengedwe chifukwa cha zitsulo zolemera kapena mankhwala ake. Makamaka chifukwa cha zinthu zaumunthu monga migodi, kutulutsa mpweya wotayirira, kuthirira kwachimbudzi komanso kugwiritsa ntchito zitsulo zolemera. Mwachitsanzo, matenda a nyengo ya m'madzi ndi matenda opweteka ku Japan amayamba chifukwa cha kuwonongeka kwa mercury ndi kuwonongeka kwa cadmium motsatira. Mlingo wa kuwonongeka zimadalira ndende ndi mankhwala mawonekedwe a zitsulo zolemera mu chilengedwe, chakudya ndi zamoyo. Kuipitsa kwachitsulo cholemera kumawonekera makamaka m’kuipitsa kwa madzi, ndipo mbali ina yake ili mumlengalenga ndi zinyalala zolimba.
Zitsulo zolemera zimatanthawuza zitsulo zokhala ndi mphamvu yokoka (kachulukidwe) wamkulu kuposa 4 kapena 5, ndipo pali mitundu pafupifupi 45 yazitsulo, monga mkuwa, kutsogolera, nthaka, chitsulo, diamondi, faifi tambala, vanadium, silicon, batani, titaniyamu, manganese, cadmium, mercury, tungsten, molybdenum, manganese olemera, golide, etc. Zitsulo ndizomwe zimafunikira pazochitika za moyo, zitsulo zambiri zolemera monga mercury, lead, cadmium, ndi zina zotero sizofunikira pazochitika zamoyo, ndipo zitsulo zolemera zonse zomwe zili pamwamba pa ndende zina zimakhala zoopsa m'thupi la munthu.
Zitsulo zolemera nthawi zambiri zimakhalapo m'chilengedwe. Komabe, chifukwa chakuchulukirachulukira, kusungunula, kukonza ndi kupanga malonda azitsulo zolemera ndi anthu, zitsulo zolemera zambiri monga lead, mercury, cadmium, cobalt, ndi zina zambiri zimalowa mumlengalenga, madzi, ndi dothi. Kuwononga kwambiri chilengedwe. Zitsulo zolemera mumitundu yosiyanasiyana yamankhwala zimapitilira, kuwunjikana ndikusamuka pambuyo polowa m'chilengedwe kapena chilengedwe, ndikuwononga. Mwachitsanzo, zitsulo zolemera zotayidwa ndi madzi oipa zimatha kudziunjikira mu ndere ndi matope pansi ngakhale ndende yaing'ono, ndi adsorbed padziko nsomba ndi nkhono, chifukwa chakudya unyolo ndende, potero kuchititsa kuipitsa. Mwachitsanzo, matenda a madzi ku Japan amayamba chifukwa cha mercury m'madzi otayira omwe amachotsedwa ku makampani opanga soda, omwe amasandulika kukhala organic mercury kudzera muzochita zamoyo; Chitsanzo china ndi ululu, womwe umayamba chifukwa cha cadmium yotulutsidwa ku mafakitale osungunula zinki ndi makampani a cadmium electroplating. Ku. Mtsogoleri wotulutsidwa kuchokera ku utsi wagalimoto umalowa m'chilengedwe kudzera mumlengalenga ndi njira zina, zomwe zimapangitsa kuti pakhale kuwonjezeka kwakukulu kwazomwe zikuchitika, zomwe zimapangitsa kuti mayamwidwe amtovu amasiku ano azitha kuwirikiza ka 100 kuposa anthu akale, ndikuwononga thanzi la munthu.
Macromolecular heavy metal water treatment agent, bulauni-red liquid polima, amatha kuyanjana ndi ayoni osiyanasiyana olemera kwambiri m'madzi otentha kutentha, monga Hg +, Cd2+, Cu2+, Pb2+, Mn2+, Ni2+, Zn2+, Cr3+, etc. Imachita kupanga madzi-insoluble Integrated mchere pa 9 mlingo wa kuchotsa. Njira yothandizira ndi yabwino komanso yosavuta, mtengo wake ndi wochepa, zotsatira zake ndi zodabwitsa, kuchuluka kwa matope kumakhala kochepa, kokhazikika, kopanda poizoni, ndipo palibe kuipitsa kwachiwiri. Ikhoza kugwiritsidwa ntchito kwambiri pochiza madzi onyansa m'makampani amagetsi, migodi ndi kusungunula, makampani opanga zitsulo, desulfurization yamagetsi ndi mafakitale ena. Kugwiritsa ntchito pH: 2-7.
2. Munda wogwiritsa ntchito mankhwala
Monga chochotsa chitsulo cholemera kwambiri, chimakhala ndi ntchito zambiri. Itha kugwiritsidwa ntchito pafupifupi madzi onse otayika okhala ndi ayoni azitsulo zolemera.
3. Gwiritsani ntchito njira ndi njira yoyendera
1. Momwe mungagwiritsire ntchito
1. Onjezani ndikuyambitsa
① Onjezani polima polima heavy metal mankhwala ochizira madzi molunjika ku heavy metal ion-container water waste, pompopompo, njira yabwino ndikuyambitsa 10min-nthawi;
②Pakuchulukirachulukira kwazitsulo zolemera kwambiri m'madzi onyansa, kuyesa kwa labotale kuyenera kugwiritsidwa ntchito kudziwa kuchuluka kwa zitsulo zolemera zomwe zawonjezeredwa.
③Pakuchiza madzi otayira okhala ndi ma ion achitsulo olemera omwe ali ndi magawo osiyanasiyana, kuchuluka kwa zida zomwe zimawonjezedwa zitha kuwongoleredwa ndi ORP.
2. Zida zamakono ndi njira zamakono
1. Pretreat madzi 2. Kuti mupeze PH = 2-7, onjezerani asidi kapena alkali kupyolera mu PH regulator 3. Sungani kuchuluka kwa zipangizo zomwe zimawonjezeredwa kudzera mu redox regulator 4. Flocculant (potaziyamu aluminium sulfate) 5. Nthawi yokhalamo tangi yolimbikitsa 10min 76, kusungirako mbale 7 nthawi yosungiramo mbale, 10min 76 nthawi yosungiramo mbale yosungiramo nthawi Sedimentation tank 8, sludge 9, reservoir 10, fyuluta 121, pH yomaliza ya dziwe 12, madzi otuluka.
4. Kusanthula phindu lachuma
Kutenga electroplating madzi oipa monga mmene heavy metal zinyalala mwachitsanzo, mu makampani okha, ntchito makampani adzapindula yaikulu chikhalidwe ndi zachuma. Electroplating madzi oipa makamaka amachokera ku rinsing madzi a plating mbali ndi pang'ono ndondomeko zinyalala zamadzimadzi. Mtundu, zomwe zili ndi mawonekedwe a zitsulo zolemera m'madzi otayira zimasiyana kwambiri ndi mitundu yosiyanasiyana yopanga, makamaka yomwe imakhala ndi ayoni azitsulo zolemera monga mkuwa, chromium, zinki, cadmium, ndi faifi tambala. . Malinga ndi ziwerengero zosakwanira, kutulutsa kwamadzi otayira pachaka kuchokera kumakampani opanga ma electroplating okha kumaposa matani 400 miliyoni.
Chithandizo chamankhwala chamadzi otayira a electroplating chimadziwika ngati njira yabwino kwambiri komanso yokwanira. Komabe, potengera zotsatira za zaka zambiri, njira yamankhwala imakhala ndi zovuta monga kusakhazikika, kugwira ntchito bwino kwachuma komanso kuchepa kwa chilengedwe. Wothandizira madzi a polymer heavy metal Amathetsedwa bwino. Vuto pamwamba.
4. Kuunika kwathunthu kwa polojekitiyi
1. Ili ndi mphamvu yochepetsera CrV, mtundu wa pH wa kuchepetsa Cr "ndi waukulu (2 ~ 6), ndipo ambiri mwa iwo ndi acidic pang'ono.
Madzi osakanizidwa amatha kuthetsa kufunika kowonjezera asidi.
2. Ndi zamchere kwambiri, ndipo pH mtengo ukhoza kuwonjezeka panthawi yomweyi. Pamene pH ifika ku 7.0, Cr (VI), Cr3 +, Cu2 +, Ni2+, Zn2 +, Fe2 +, ndi zina zotero zimatha kufika pamtunda, ndiko kuti, zitsulo zolemera zimatha kuchepetsedwa pamene kuchepetsa mtengo wa VI. Madzi oyeretsedwa amakwaniritsa bwino muyeso wamtundu woyamba wadziko lonse
3. Mtengo wotsika. Poyerekeza ndi chikhalidwe cha sodium sulfide, mtengo wokonza umachepetsedwa ndi RMB 0.1 pa tani.
4. Kuthamanga kwachangu kumathamanga, ndipo ntchito yoteteza chilengedwe ndi yabwino kwambiri. Mvula ndiyosavuta kukhazikika, yomwe imathamanga kawiri kuposa njira ya laimu. Mvula munthawi yomweyo ya F-, P043 m'madzi onyansa
5. Kuchuluka kwa matope ndikochepa, theka lokha la njira yachilengedwe ya mpweya wamankhwala
6. Palibe kuipitsidwa kwachiwiri kwazitsulo zolemera pambuyo pa chithandizo, ndipo chikhalidwe chamkuwa cha carbonate ndichosavuta hydrolyze;
7. Popanda kutseka nsalu ya fyuluta, ikhoza kukonzedwa mosalekeza
Gwero la nkhaniyi: Sina Aiwen adagawana zambiri
Nthawi yotumiza: Nov-29-2021