A dispersed-ozone flotation (DOF) separator for tertiary wastewater treatment

Jin, Pengkang; Wang, X.C.; Hu, Guiping

doi:10.2166/wst.2006.263

Cited by 24 publications

(2 citation statements)

References 11 publications

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“…Гравитационная мембранная фильтрация и флотация озоном были изучены в работе [14]. Авторами [15] исследована комплексная очист ка с использованием комбинации коагуляции и флотации озоном. Несколько процессов, таких как озонирование, флотация, коагуляция и обес цвечивание, могут проводиться в одном интег рированном реакторе [16].…”

Section: Flotation Of Wastewater From Dye Work Using Ozoneunclassified

Flotation of wastewater from dye works using ozone

М.В.¹,

Дубина²,

Лихавицкий³

2023

Vodosnabzhenie I Sanitarnaia Tehnika

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Представлены результаты экспериментальных исследований эффективности очистки модельных и реальных сточных вод красильно-отделочных производств с помощью пневматической флотации с использованием озоновоздушной смеси вместо воздуха. Изучено влияние расхода газовой смеси, концентрации красителя, концентрации озона в газовой смеси на эффективность очистки. Эффективность очистки оценивали по оптической плотности и ХПК. При использовании озоновоздушной смеси вместо воздуха было достигнуто повышение эффективности до 12 раз. Результаты проведенных исследований показали, что при использовании флотации озоном для достижения эффективности очистки 90% реальных сточных вод красильно-отделочных производств предприятия, отобранных до блока очистных сооружений (электрокоагуляция с последующей флотацией), требуются следующие условия: время обработки не менее 60 мин; расход озоновоздушной смеси не менее 5 л/(л·мин); концентрация озона в озоновоздушной смеси не менее 8 г/м3. The results of experimental studies of the efficiency of purification of model and real wastewater from dye and finishing works with the aid of pneumatic flotation using ozone-air mixture instead of air are presented. The effect of the gas mixture flow rate, dye concentration, and ozone concentration in the gas mixture on the purification efficiency was studied. The purification efficiency was evaluated by optical density and COD. While using ozone-air mixture instead of air, a 12-fold efficiency increase was achieved. The results of the studies have shown that while using ozone flotation to achieve the purification efficiency of 90% of the real wastewater from dye and finishing works, abstracted upstream the treatment facilities (electrocoagulation followed by flotation), the following conditions are required: processing time not less than 60 minutes; consumption of ozone-air mixture not less than 5 l/(l·min); ozone concentration in the ozone-air mixture not less than 8 g/m3.

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Section: Flotation Of Wastewater From Dye Work Using Ozoneunclassified

Flotation of wastewater from dye works using ozone

М.В.¹,

Дубина²,

Лихавицкий³

2023

Vodosnabzhenie I Sanitarnaia Tehnika

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“…The inspiration of hybrid ozonation-coagulation (HOC) comes from integrated reactor of dissolved ozone flotation (DOF) (Jin, Wang et al 2006). DOF is an intensified technology integrating ozonation and dissolved air flotation (DAF) together.…”

Section: Introductionmentioning

confidence: 99%

A new water treatment technology—Hybrid ozonation-coagulation process: A review

Wei

2022

IOP Conf. Ser.: Earth Environ. Sci.

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Hybrid ozonation-coagulation (HOC) process is an integrated water treatment process of simultaneous ozone and coagulation processes. This paper introduces the origin, performance, reaction mechanism and influence of coagulant in HOC system. Compared with traditional air flotation and pre-ozone-coagulation, HOC system shows more advantages in removal of organic pollutants. It is attributed to abundant pathways for reactive oxygen species (ROS) generation in HOC process, which not only transfers pollutants to flocs but also synchronously degrades some organic pollutants.

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Optimizing Dye Wastewater Purification: Ultrasonic and Flotation With Ozonation Synergy

Romanovski,

Pilipenko,

Dubina

et al. 2024

Engineering Reports

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The article presents the results of experimental studies of the efficiency of purification of model and real wastewater from dyeing and finishing industries using pneumatic flotation using an ozone‐air mixture instead of air and a combination of ultrasonic treatment and ozonation. The influence of gas mixture consumption, dye concentration, and ozone concentration in the gas mixture on the cleaning efficiency was studied. The purification efficiency was assessed by optical density and COD. By using an ozone‐air mixture instead of air in the flotation process, an efficiency increase of up to 12 times was achieved. It has also been shown that wastewater treatment efficiency increases by up to 12% when combining ozone‐air flotation with ultrasonic treatment at 630 W and operating frequency 22% ± 10% kHz. This effect may be associated, first of all, with the dispersion of bubbles of the ozone‐air mixture, which leads to an increase in their total surface and, accordingly, to the rise in the kinetics of mass transfer—ozone dissolution.

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A dispersed-ozone flotation (DOF) separator for tertiary wastewater treatment

Cited by 24 publications

References 11 publications

Flotation of wastewater from dye works using ozone

Flotation of wastewater from dye works using ozone

A new water treatment technology—Hybrid ozonation-coagulation process: A review

Optimizing Dye Wastewater Purification: Ultrasonic and Flotation With Ozonation Synergy

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