COAGULANTS ON THE BASIS OF WASTE FOR REMOVAL OF HEAVY AND  COLORED METALS FROM SEWAGE WATER

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28 январ 2020

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COAGULANTS ON THE BASIS OF WASTE FOR REMOVAL OF HEAVY AND COLORED METALS FROM SEWAGE WATER

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Maqolada oqova suvlardan og’ir va rangli metallarni yo'qotish uchun chiqindilar asosida koagulyanlar ishlab chiqish tahlil qilingan. Alyuminiy sul’fat bilan hosil qilingan yuqori loyqasimon suvdagi aralashmalarni ajratishda modifikaciyalangan alyuminiy gidroksidining samarali ta'siri aniqlangan. Ma’lumki, ifloslanish yuzasida mayda kristalli gidroksid sorbitlashda gidroksid molekulalardan tashkil topgan qobiq bilan qattiq fazalar zarrachalari, hamda kam eruvchi qattiq faza zarrachalari orasida o'zaro bog’liqlik ro'y beradi va astasekin pahta shaklidagi cho'kma xosil bo'lishiga olib keladi. Barqaror agrigat xolat yaratishda Civil and environmental engineering 142 neytral faza xosil qilish uchun gidroksid qatlam bilan zarrachalarni qurshovlash yordamida zarracha o'lchamining kamayishi koagulyant miqdorini oshishiga olib keladi. Suv tarkibida fosfat, sulfat, xlorid, gidrokorbonat ionlarining mavjudligi koagulyaciya jarayonini barqarorlashtirish va ayuminiy sulfat reagenti sarfining kamayishiga va kam eruvchi kompleks birikmalarining xosil bo'lishiga olib keladi. Kislotali muxitning yuqoriligidan xlor ionlari barqaror harakatlanadi va alyuminiy gidroksid xosil bo'lishi bu jarayonning tugashini kamayishiga olib keladi lekin alyuminiy gidroksidni modifikaciyalash jarayoni yuz bermaydi. Suv juda ham loyqa, rangsiz va permanganat bilan oksidlab aniqlanadigan organik aralashmalari kam bo'lganda tarkibida gidroksil guruhi ko'p bo'lgan modifikaciyalangan koagulyantdan kam ishlatish mumkin.

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# waste water# phosphogypsum# oxidation# purification# coagulant# aluminum hydroxide# mixture# capture

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Foydalanilgan adabiyotlar

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