Influence of operating parameters on ammonia nitrogen
it is one of the major causes for the eutrophication. Therefore, effective removal of ammonia nitrogen with low concentrationhas become a hot topic in the field of micro polluted water source - treatment. With regards to the drinking water treatment technologies, conventional coagulation is still the main treatment process.
The removal of ammoniacal nitrogen is an important aspect of treatment of leachate at landfill sites. The rate of removal (in percent per day) is recorded for several days for each of several treatment methods. The results are presented in the following table.
Ammoniacal nitrogen removal from water by treatment with
Ammoniacal nitrogen removal from water by treatment with clays and zeolites The ammoniacal nitrogen removal efficiency is higher for clays in a liquid colloidal state compared to the clays in a dry state. paper was the investigation of the possibility of using natural Croatian clay and zeolite as a filter medium for water treatment
The objective of the present study was to investigate the removal of nitrogen in the form of ammonium ions (N-NH4+) from aqueous solutions using natural clay and zeolite. The Croatian zeolite clinoptilolite from the area of Donje Jesenje and Croatian bentonite clay from the Kutina area were used as natural filtration materials. Alkaline and acid modification of natural clay was performed.
How to reduce or remove ammoniacal nitrogen
Biological nitrogen removal is regarded as the most efficient and economically feasible method available for removal of ammonia from wastewater.Deammonification treatment using single-tank approach.
Laboratory experiment revealed that anaerobic organism was in progressive state when the leachate in neutral condition. At this phase, the removal efficiency of chemical oxygen demand (COD), ammoniacal nitrogen (NH3–N) and colour of 76.84, 59.44 and 46.2 %, were experimentally attained.
Physico-chemical technologies for nitrogen removal
Key words: nitrogen removal; physico-chemical technologies; wastewater treatment RESUMO O trabalho examina os processos físico-químicos para a remoção de nitrogênio das águas residuais, considerando, tanto os muitos conhecidos e amplamente aplicados em escala industrial, como aqueles que ainda estão em fase de pesquisa.
Wetlands for Wastewater Treatment. Constructed wetlands (CWs) mimic the simultaneous physical, chemical, and biological processes occurring in natural wetlands for wastewater treatment purposes (Wu et al., 2025). This section summarizes studies performed on the use of CWs for water and wastewater treatment to remove a variety of pollutants.
Optimization and separation mechanism of Ni(II) removal
In this study, the optimization of Ni(II) removal and water recovery in the ion flotation were evaluated using the response surface method. The Ni(II) removal and water recovery were modeled and described as a function of the main variables including pH, collector concentration, and frother concentration. Seventeen experiments were performed as a central composite design by 23 full factorial
Polyacrylonitrile ultrafiltration membrane was used to remove nitrate from aqueous solution, assisted by variations in cationic surfactant type and structure [cetylpyridinium chloride (CPC) and hexadecyl trimethylammonium bromide (HTAB)]. This paper also studied the effects of membrane thickness (150, 200, 250 µm), nitrate concentration (40, 120, 200 ppm), and surfactant concentration (0.4, 5
Ammonium Ion Removal from Wastewater by a Natural Resin
A natural resin, Clinoptilolite, in the powder form was used in this study to remove ammonium ions from synthetic wastewaters. The concentrations of the ammonium ion (NH 4 +) in the synthetic wastewaters were 5, 10, 20, 30 and 40 mg L-1.Based on the batch kinetic experiments, the equilibrium time was determined to be one hour for synthetic wastewaters of 5, 10, 20 and 30 mg L-1 and 2 h for 40
ammoniacal nitrogen removal of semi-aerobic landfill leachate using ion exchange resin. They used RSM to evaluate the effects of process variables and interactions towards the attainment of optimum conditions. Hossini et al. [30] optimized ammonia volatilization using air stripping from aquatic solutions using response surface methodology.
- Which cationic water soluble polymer is best flocculant for kaolin suspension?
- Five cationic water-soluble polymers with different molecular weights and charge densities were obtained and then applied as flocculant for kaolin suspension. It was found that the best flocculation properties showed polymer with highest charge density and molecular weight.
- Is polyacrylamide grafted hydroxypropyl methyl cellulose a biodegradable flocculant?
- Das R., Ghorai S., Pal S. Flocculation characteristics of polyacrylamide grafted hydroxypropyl methyl cellulose: An efficient biodegradable flocculant. Chem. Eng. J. 2013;229:144–152. doi: 10.1016/j.cej.2013.05.104. [ CrossRef] [ Google Scholar] 97.
- Why are polymer flocculants used in water purification?
- Therefore, in modern water purification technologies, polymer flocculants are increasingly used. Polymer flocculants cause the formation of large, coherent aggregates (so-called flocs) that settle in the solution. Synthetic polymers are highly effective flocculants at low dosages but have poor shear stability.
- Which cationic polymers are used as flocculants for silica aggregates?
- An example is work by Zhou and Framks [ 31 ], where three cationic polymers (homopolymer of diallyldimehylammonium chloride and its two copolymers with acrylamide) of different molecular weights (1.1–3.0 × 10 5 g/mol) and charge density (CD) (10%, 40%, and 100%) were used as flocculants for silica aggregates.
