A novel combined process for efficient removal of Se(VI) from sulfate-rich water: Sulfite/UV/Fe(III) coagulation

One effective bromoamine acid (BAA) degrading strain FL was isolated previously with the ability to use BAA as the sole source of carbon and energy. The strain FL was applied in a combined process of microelectrolysis (ME) and biological aerated filter (BAF) to treat the bromoamine acid wastewater, and the treatment efficiency was investigated. It was shown that when the influent CODcr was lower than 1000 mg L-1, and the total hydrolytic retention time (HRT) was 37.7 h, the removal rate of chrominance and CODcr could reach 95.3% and 77.3% respectively. Most of the chrominance was removed by the ME treatment, while the removal of CODcr is mostly owned to the BAF treatment. After long-term contact with the BAA wastewater, the strain FL became one of the predominent species in BAF. When the system was subjected to hydraulic loading shock, the strain FL ensured the efficient removal of chrominance and BAA.

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EFFICIENT REMOVAL OF ANIONIC DYE POLLUTANT BY NIMGAL LAYERED DOUBLE HYDROXIDES OF VARIABLE COMPOSITION

Catalysis in Green Chemistry and Engineering ◽

10.1615/catalgreenchemeng.2018028634 ◽

2018 ◽

Vol 1 (4) ◽

pp. 307-323

Author(s):

Dipshikha Bharali ◽

Pankaj Bharali ◽

Ramesh Ch. Deka

Keyword(s):

Layered Double Hydroxides ◽

Variable Composition ◽

Efficient Removal ◽

Anionic Dye ◽

Double Hydroxides

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AN NOVEL UCSB-ANR INTEGRATED SYSTEM FOR EFFICIENT REMOVAL OF ORGANIC MATTER AND AMMONIA NITROGEN FROM SWINE WASTEWATER

Environmental Engineering and Management Journal ◽

10.30638/eemj.2016.246 ◽

2016 ◽

Vol 15 (10) ◽

pp. 2261-2266

Author(s):

Xiaowei Li ◽

Jie Zhang ◽

Weiwei Zhao ◽

Xuewen Yi ◽

Wei Lin ◽

...

Keyword(s):

Organic Matter ◽

Ammonia Nitrogen ◽

Integrated System ◽

Swine Wastewater ◽

Efficient Removal

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Studying dispersed and rheological properties of hydrocarbon-containing acid emulsions and their efficiency in removing asphalt-resin-paraffin deposits

Oil and Gas Studies ◽

10.31660/0445-0108-2020-2-128-139 ◽

2020 ◽

pp. 128-139

Author(s):

M. Yu. Shumakher ◽

V. V. Konovalov ◽

A. P. Melnikov

Keyword(s):

Aqueous Solution ◽

Hydrochloric Acid ◽

Rheological Properties ◽

Reaction Rate ◽

Experimental Studies ◽

Efficient Removal ◽

Reservoir Properties ◽

Hydrocarbon Solvents ◽

Formation Zone ◽

Effect Of The Composition

Currently, the treatment of the bottomhole formation zone with acidic compositions is one of the most common methods to intensify the oil inflow. The use of various modified acid compositions increases the efficiency of acid treatments on the bottomhole formation zone. Acid compositions, including those containing hydrocarbon solvents, which contribute to more efficient removal of organic colmatants, affect the reaction rate of the reagent with the rock and processing equipment, change the reservoir properties, etc.The article presents the results of experimental studies, which are aimed at establishing the effect of the composition of hydrocarbon-containing acidic emulsions consisting of an aqueous solution of hydrochloric acid, toluene and Neonol AF 9-10 on their dispersed and rheological properties, as well as their efficiency in removing paraffin deposits.

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