A5017824763- Water Treatment and Disinfection
- Coagulation and Flocculation Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Recycling and Waste Management Techniques
- Microplastics and Plastic Pollution
- Adsorption and biosorption for pollutant removal
- Minerals Flotation and Separation Techniques
- Marine and coastal ecosystems
- Groundwater flow and contamination studies
- Pharmaceutical and Antibiotic Environmental Impacts
- Diatoms and Algae Research
- Graphene and Nanomaterials Applications
- Advanced oxidation water treatment
- Constructed Wetlands for Wastewater Treatment
- Aquatic and Environmental Studies
- Potato Plant Research
- Food Industry and Aquatic Biology
- Effects and risks of endocrine disrupting chemicals
- Environmental Sustainability and Technology
- Nanoparticles: synthesis and applications
- biodegradable polymer synthesis and properties
- Dye analysis and toxicity
- Microbial Community Ecology and Physiology
- Mercury impact and mitigation studies
- Landfill Environmental Impact Studies
Czech Academy of Sciences, Institute of Hydrodynamics
2015-2025
Czech Academy of Sciences
2011-2012
Many studies have overlooked the role of pH in optimizing coagulation. Herein, authors emphasize importance value coagulation during production drinking water. We investigate influence on surface charges and forms coagulants impurities intended for removal. A methodology is suggested key parameters efficient – coagulant dosage value. The study points out that various optimal ranges are required specific their mixtures. For natural organic matter both humic algogenic origin, acidic values...
ABSTRACT This study investigated the adsorption using mixed adsorbents comprising different proportions of commercially available granular activated carbons (GACs) and compared their performance to single GACs for removing algal organic matter (AOM) pesticides. In addition diverse GAC ratios, effects adsorbent dosage solution pH were AOM, pesticides, an AOM‐pesticide mixture. The can achieve overall higher removal AOM pesticides in a Surprisingly, even adsorbates increased when used. from...
During the last two decades, nanomaterials based on nanoscale zero-valent iron (nZVI) have ranked among most utilized remediation technologies for soil and groundwater cleanup. The high reduction capacity of elemental (Fe0) allows rapid cost-efficient degradation or transformation many organic inorganic pollutants. Although worldwide real pilot applications show promising results, effects nZVI exposed living organisms are still not well explored. majority recent studies examined toxicity to...
This paper describes the influence of global velocity gradient G on properties aggregates formed during coagulation/flocculation process. The methods image and fractal analysis were used to determine aggregate size structure, respectively. these separation using depth filtration is also described. Experiments conducted in a pilot plant operation. suspension was flow mixing tank with gradients ranging from 28.4–307.2 s−1 ferric sulphate as coagulant. Filtration velocities 3 6 m h−1....
The Effect of Cellular Organic Matter Produced by Cyanobacteria Microcystis Aeruginosa on Water Purification aim this paper is to investigate the influence COM (Cellular Matter) produced aeruginosa process water purification destabilisation and subsequent aggregation impurity particles. research was carried out with a raw into which added. removal efficiency most significant components COM, i.e. polysaccharides proteins, investigated. It found that proteins dependent reaction conditions (pH,...
The efficiency of removal cellular organic matter (COM) cyanobacteria Microcystis aeruginosa from water with ferric sulfate is influenced primarily by coagulant dosage and reaction pH. Therefore, optimization the conditions a prerequisite for efficient purification surface waters. Because isoelectric point COM occurs at low pH, waters containing this should take place in an acidic pH range. It was also found that proteins are removed more efficiently than other substances (mainly polysaccharides).
Abstract The aim of this paper is to describe the removal efficiency individual fractions natural organic matter (NOM) and aluminum transformation during treatment two types surface water with an increased concentration NOM various origins. coagulation conditions (dose destabilization reagent reaction pH value) were optimized for best removal. results show that depends on character, using destabilizing reagents conditions. doses influence especially hydrophilic charged (CHA) very hydrophobic...
A Method for Evaluation of Suspension Quality Easy Applicable To Practice: The Effect Mixing on Floc Properties paper introduces the test aggregation as a simple, inexpensive method evaluating suspension quality during drinking water treatment, suitable use in both laboratory and operation conditions. procedure derivation is described. used demonstration influence mean velocity gradient mixing time floc properties formed Couette reactor. It was proved that with increasing gradient, size...
The aim of this contribution is to investigate aggregation efficiencies when a fluidised layer granular material (FLGM) applied for treatment surface water with high DOC (Dissolved Organic Carbon) and low alkalinity in pilot size operation. It was shown that the FLGM can be effective agitation system using destabilised particles form readily separable suspension. An efficiency reactor evaluated by degrees destabilisation impurities. maximal separation plant after filtration attained φAl =...
This study aims to evaluate the influence of agitation conditions on efficiency aggregation process when treating surface water containing humic substances. Laboratory tests were conducted by jar using a variable speed paddle gang stirrer. Optimization intensity was determined Couette flocculator. Suspension prepared aluminium chloride as destabilising reagent. Aggregation evaluated determination degree and test aggregation. For all waters treated, optimum treatability demonstrated applying...