scholarly journals Adsorption of Nitrate by a Novel Polyacrylic Anion Exchange Resin from Water with Dissolved Organic Matters: Batch and Column Study

2019 ◽  
Vol 9 (15) ◽  
pp. 3077 ◽  
Author(s):  
Yue Sun ◽  
Weisheng Zheng ◽  
Xinchun Ding ◽  
Rajendra Prasad Singh
Keyword(s):  
Anion Exchange ◽  
Municipal Wastewater ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Fixed Bed ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Municipal Wastewater Treatment ◽  
N Removal ◽  
Dissolved Organic Matters

A novel anion exchange resin AEE-3 was synthesized by N-alkylation of a weakly basic polyacrylic anion exchanger D311 with 1-bromopropane to effectively remove nitrate (NO3−-N) from aqueous solution. The related finding revealed that its adsorption isotherm obeyed the Langmuir model well, and the second-order model was more validated for the NO3−-N adsorption kinetics study. Compared to commercially-available polystyrene-based nitrate specialty resin Purolite A 520E (A520E), AEE-3 resin has a higher adsorbed amount and better regeneration performance toward NO3−-N in the existence of dissolved organic matter (DOM) using static and dynamic methods. Notably, a real secondary treated wastewater (STWW) obtained from a local municipal wastewater treatment plant was also assessed for NO3−-N removal in fixed-bed columns. Observations from this study indicated that AEE-3 could effectively remove NO3−-N from contaminated surface water.

scholarly journals Efficiency of municipal wastewater treatment with membrane bioreactor

2019 ◽  
Vol 41 (1) ◽  
pp. 47-54
Author(s):  
Magdalena Domańska ◽  
Anna Boral ◽  
Kamila Hamal ◽  
Magdalena Kuśnierz ◽  
Janusz Łomotowski ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Membrane Filtration ◽  
Municipal Wastewater ◽  
High Efficiency ◽  
Biological Membrane ◽  
Treatment Plant ◽  
Membrane Reactors ◽  
Quality Analysis ◽  
Treated Wastewater ◽  
Municipal Wastewater Treatment

AbstractThe increasingly stringent requirements for wastewater treatment enforce the adoption of technologies that reduce pollution and minimize waste production. By combining the typical activated sludge process with membrane filtration, biological membrane reactors (MBR) offer great technological potential in this respect. The paper presents the principles and effectiveness of using an MBR at the Głogów Małopolski operation. Physicochemical tests of raw and treated wastewater as well as microscopic analyses with the use of the FISH (fluorescence in situ hybridization) method were carried out. Moreover, the level of electric energy consumption during the operation of the wastewater treatment plant and problems related to fouling were also discussed. A wastewater quality analysis confirmed the high efficiency of removing organic impurities (on average 96% in case of BOD5 and 94% in case of COD) and suspension (on average 93%).

scholarly journals Upflow packed bed Anammox reactor used in two-stage deammonification of sludge digester effluent

2018 ◽  
Vol 78 (9) ◽  
pp. 1843-1851 ◽  
Author(s):  
İ. Çelen-Erdem ◽  
E. S. Kurt ◽  
B. Bozçelik ◽  
B. Çallı
Keyword(s):  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Municipal Wastewater ◽  
Removal Rate ◽  
Treatment Plant ◽  
Packed Bed ◽  
Municipal Wastewater Treatment ◽  
Two Stage ◽  
N Removal ◽  
Total Nitrogen Removal

Abstract The sludge digester effluent taken from a full scale municipal wastewater treatment plant (WWTP) in Istanbul, Turkey, was successfully deammonified using a laboratory scale two-stage partial nitritation (PN)/Anammox (A) process and a maximum nitrogen removal rate of 1.02 kg N/m3/d was achieved. In the PN reactor, 56.8 ± 4% of the influent NH4-N was oxidized to NO2-N and the effluent nitrate concentration was kept below 1 mg/L with 0.5–0.7 mg/L of dissolved oxygen and pH of 7.12 ± 12 at 24 ± 4°C. The effluent of the PN reactor was fed to an upflow packed bed Anammox reactor where high removal efficiency was achieved with NO2-N:NH4-N and NO3-N:NH4-N ratios of 1.32 ± 0.19:1 and 0.22 ± 0.10:1, respectively. The results show that NH4-N removal efficiency up to 98.7 ± 2.4% and total nitrogen removal of 87.7 ± 6.5% were achieved.

scholarly journals Risk Assessment Analysis in a Municipal Wastewater Treatment Plant

Proceedings ◽  
2019 ◽  
Vol 16 (1) ◽  
pp. 18
Author(s):  
Magdalena Łój-Pilch ◽  
Anita Zakrzewska ◽  
Ewa Zielewicz
Keyword(s):  
Risk Assessment ◽  
Municipal Wastewater ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Municipal Sewage ◽  
Proper Function ◽  
Municipal Wastewater Treatment ◽  
Sewage Treatment Plants

Risk management, an aspect of which is risk assessment, is a process supporting the proper function of municipal sewage treatment plants. Many factors affect the quality of treated wastewater. Risk assessment, its analysis, and hierarchization permit the elimination of events with the most destructive impacts on the purification process.

scholarly journals Application of SAC254 measurement for the assessment of micropollutant removal in the adsorptive treatment stage of a municipal wastewater treatment plant

2016 ◽  
Vol 11 (2) ◽  
pp. 503-515 ◽  
Author(s):  
Annette Rößler ◽  
Steffen Metzger
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Wastewater Treatment Plant ◽  
Municipal Wastewater ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Municipal Wastewater Treatment ◽  
Adsorptive Treatment ◽  
Micropollutant Removal ◽  
Treatment Stage

In 2010, the Mannheim wastewater treatment plant was expanded with an adsorptive treatment stage to remove organic micropollutants (OMPs). Differences in the removal efficiencies of the OMPs investigated were determined over four years of operation by applying different powdered activated carbon (PAC) products and a constant volume-proportional dosing of 10 mg PAC/L. Possible influences on the removal efficiency are discussed here on the basis of the data obtained, exemplified for the analgesic diclofenac. The analyses show that the removal efficiency is influenced significantly by the spectral absorption coefficient (SAC) of the biologically treated wastewater at a wavelength of 254 nm (SAC254). Therefore, in order to ensure the constant treatment performance desired, the dosage of PAC should be adjusted to the measured SAC254 values. Moreover, as the SAC254 reduction correlates with the removal efficiency of OMPs, the additional determination of its reduction allows indirect control of the actual removal performance achieved. The SAC254 reduction can also be used for targeted control of the PAC dosage.

Determination of the Competitive Ion Exchange Isotherms of Taurine and Glycine on D290 Resin by Inverse Method

2013 ◽  
Vol 800 ◽  
pp. 22-26
Author(s):  
Shu Juan Zhuang ◽  
Feng Song ◽  
Zhong Jun Fu
Keyword(s):  
Ion Exchange ◽  
Anion Exchange ◽  
Inverse Method ◽  
Exchange Resin ◽  
Anion Exchange Resin ◽  
Fixed Bed ◽  
Elution Curves ◽  
Ion Exchange Isotherm ◽  
Good Agreement

With the elution curves of glycine and taurine, the ion exchange isotherm parameters of glycine and taurine on D290 anion exchange resin are determined by the inverse method. In this work, with the multi-component competitive ion exchange isotherm and the equilibrium dispersion chromatographic model, the elution curves of glycine and taurine on D290 anionic fixed bed are fitted. The parameters of competitive isotherm are determined, Ktau is 2.55, Kgly is 1.65. The result s showed good agreement between the elute curves fitted by the model and the separation data which confirmed the validity of the model selected.Keywords-taurine; glycine;competitive isotherm;inverse method;

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