The Effect of Anionic Surfactant Concentration on Activated Sludge Condition and Phosphate Release in Biological Treatment Plant

Dereszewska, Alina; Cytawa, Stanisław; Tomczak-Wandzel, Renata; Mędrzycka, Krystyna

doi:10.15244/pjoes/28640

Cited by 45 publications

(24 citation statements)

References 22 publications

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“…This study showed that fermentation and denitritation were enhanced simultaneously at 0.02 g/g SDS. Taking into consideration that the average surfactant (e.g., SDS) concentration in municipal wastewater varies from 10 to 20 mg/L, whereas in some industrial wastewater it may reach 300 mg/L, even after the coagulation process , the technology of improving integrated WAS fermentation–denitritation by SDS stimulation will be feasible and cost‐effective.…”

Section: Resultsmentioning

confidence: 99%

Enhancement of Integrated Waste Activated Sludge Fermentation and Denitritation by Addition of Sodium Dodecyl Sulfate

Wang

et al. 2016

CLEAN Soil Air Water

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Integrated waste activated sludge fermentation and denitritation (WASFD) is an efficient energy-saving approach to treat wastewater and sludge at the same time. This study aimed at simultaneously promoting WASFD by adding sodium dodecyl sulfate (SDS). The batch-mode tests showed that total volatile fatty acids (consisting of VFAs consumed for denitritation and VFAs observed) increased significantly at SDS dosages of 0.02-0.1 g/g dry sludge at room temperature. After 12 h, the released ammonium nitrogen reached the peak value at 0.1 g/g SDS, and decreased by 75.1% at 0.02 g/g SDS. Released phosphorus decreased by 63.1% at 0.02 g/g SDS compared to the peak value at 0.15 g/g SDS. Further investigation showed that the denitritation rate was enhanced at 0.02-0.05 g/g SDS. From the above, a suitable SDS dosage of 0.02 g/g is beneficial for WASFD with a relatively minor undesirable nutrient release from sludge fermentation.

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Section: Resultsmentioning

confidence: 99%

Enhancement of Integrated Waste Activated Sludge Fermentation and Denitritation by Addition of Sodium Dodecyl Sulfate

Wang

et al. 2016

CLEAN Soil Air Water

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“…The mechanism of disruption of the activated sluge process is due to the breakup of loosely bound flocs and, as surfactant concentration is increased, tightly-bound flocs, causing poor settling of the sludge blanket and suspended solids carryover. Eventually, at high concentrations, microbial cell lysis occurs [3]. In the surfactant ingress incident at the facility, the validated simulation model was used to quickly understand the likelihood of effluent toxicity, estimate the proportion of surfactant remaining in the aeration tank and to predict the likely process behavior in the days following the incident.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Simulation of Petrochemical Wastewater Treatment Using Wastewater Plant Simulation Software

Ariff

Bakir

2018

MATEC Web Conf.

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A dynamic simulation model was developed, calibrated and validated for a petrochemical plant in Terengganu, Malaysia. Calibration and validation of the model was conducted based on plant monitoring data spanning 3 years resulting in a model accuracy (RMSD) for effluent chemical oxygen demand (COD), ammoniacal nitrogen (NH3-N) and total suspended solids (TSS) of ±11.7 mg/L, ±0.52 mg/L and ± 3.27 mg/L respectively. The simulation model has since been used for troubleshooting during plant upsets, planning of plant turnarounds and developing upgrade options. A case study is presented where the simulation model was used to assist in troubleshooting and rectification of a plant upset where ingress of a surfactant compound resulted in high effluent TSS and COD. The model was successfully used in the incident troubleshooting activities and provided critical insights that assisted the plant operators to quickly respond and bring back the system to normal, stable condition.

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“…Surface active agents occur both in municipal and industrial wastewater [2]. Large amounts of surfactants in sewage stream may result in disorder of biological treatment (activated sludge process) [9], hence surfactant concentration in industrial wastewater discharged into sewage systems in Poland cannot exceed 15 mg/dm 3 and 20 mg/dm 3 for anionic and non-ionic surfactants, respectively [10]. Insufficient wastewater treatment or direct releasing of contaminated sewage into water environment contribute to pollution of water bodies by surfactants.…”

Section: Introductionmentioning

confidence: 99%

Application of nanofiltration membranes for removal of surfactants from water solutions

Kowalska

Klimonda

2017

E3S Web Conf.

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Abstract. The objective of the study was to compare effectiveness of nanofiltration (NF) process for treatment aqueous solutions containing various types of surfactants (anionic, cationic and non-ionic). The experiments were conducted with the use of Microdyn-Nadir ® nanofiltration membranes (NP010 and NP030). The effect of surfactant type, its concentration and membrane cut-off on the process parameters (retention coefficient and permeate flux) was assessed. The experiments showed that separation of anionic and cationic surfactants depended on their concentration in the feed solutions. The retention coefficient of anionic surfactant ranged from 54 to 81% (NP010) and from 64 to 80% (NP030), while rejection of cationic surfactant varied from 48 to 85% (NP010) and from 51 to 88% (NP030). The values of retention coefficient of non-ionic surfactant were in the range of 69-77% and 79-88% for NP010 and NP030, respectively; and to a much lesser extent were depended on its concentration in the feed solutions in comparison with anionic and cationic compounds. Membrane characterized by smaller value of cut-off (NP030) allowed to obtain higher retention coefficients of surfactants. The membrane permeability deterioration was observed with the increase of surfactants concentration in the treated solutions. In all experiments, a sharp decline of the permeate flux was noticed for concentration below the CMC values.

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The Effect of Anionic Surfactant Concentration on Activated Sludge Condition and Phosphate Release in Biological Treatment Plant

Cited by 45 publications

References 22 publications

Enhancement of Integrated Waste Activated Sludge Fermentation and Denitritation by Addition of Sodium Dodecyl Sulfate

Enhancement of Integrated Waste Activated Sludge Fermentation and Denitritation by Addition of Sodium Dodecyl Sulfate

Dynamic Simulation of Petrochemical Wastewater Treatment Using Wastewater Plant Simulation Software

Application of nanofiltration membranes for removal of surfactants from water solutions

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