Tag:clinoptilolit containing zeolite

№11|2013

DRINKING WATER SUPPLY

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UDC 628.16.065.2

Belyak А. А., GERASIMOV M. M., GUSEVA O. A., SMIRNOV A. D.

Removal of ammonia nitrogen from surface water source
with the use of powdered zeolite

Summary

During flood periods increased concentrations of ammonia nitrogen in river water to 2–2.5 maximum permissible concentration are recorded at the Kirov water treatment plant. The assessment of possible use of powdered clinoptilolit containing zeolites in the existing water treatment process flow scheme to eliminate ammonium ions from natural water is given. The tests were carried out with the Viatka river water. After zeolite powder dosage of 0.1–1.3 mg/l addition into the water and 30 minutes mixing (200 rpm) slick was formed. During sedimentation a part of zeolite powder settled for 2–3 hours; however high turbidity remained for 24 hours. After adding 10 mg/l dosage of coagulant (aluminium sulfate) (as Al2O3) and Praestol 650TR flocculant complete precipitation of big flocks was achieved within 5–15 minutes. The ion-exchange capacity of powdered zeolite specimen – from 1.35 to 2.25 (as ammonia nitrogen) was determined. The highest ion-exchange capacity was recorded for Sokirnit natural zeolite (0.06–0.1 mm particle size). It was proved that ammonium ions exchange capacity depends on the concentration of clinoptilolit in the material (its concentration can change in the process of natural zeolite disintegrating and fractionating). The first pilot line of the plant with a capacity of 58 thousand m3 of water per day that provided for reducing ammonia nitrogen concentration to the level lower than MPC (2 mg/l) was assembled and tested at the Kirov water treatment plant.

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№4|2025

WASTEWATER TREATMENT

UDC 628.316.12:544.726
DOI 10.35776/VST.2025.04.05

GERASIMOV M. M., Belyak А. А., Sverdlikov Aleksandr, SMIRNOV A. D., Popov Konstantin

Estimation of the effectiveness of Sokirnit zeolite in removing ammonium ions at the quarry wastewater treatment facilities of Vostochno-Beiskii razrez, LLC

Summary

The article presents the results of tests on tertial treatment of real quarry wastewater with different ammonium ion concentration by filtration using Sokirnit type 1 natural zeolite. The tests were carried out with three samples of real wastewater in a laboratory setup that provided for the precise reproducibility of all conditions during the experiments. It was found that the dynamic exchange capacity related to ammonium ions was affected by their concentration in the crude wastewater with a design contact time with zeolite of 10 minutes. Preliminary proposals for adjusting the design process flow scheme and modes for quarry wastewater treatment at the treatment facilities of Vostochno-Beiskii Razrez LLC were developed.

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Журнал ВСТ включен в новый перечень ВАК

Шлафман В. В. Проектирование под заданную ценность, или достижимая эффективность технических решений – что это?

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