2 edition of Removal of a non-ionic surfactant during sewage treatment found in the catalog.
Removal of a non-ionic surfactant during sewage treatment
R. C. Rootham
|Statement||by R.C. Rootham and M.J. Stiff.|
|Series||Technical report / Water Research Centre -- 18|
|Contributions||Stiff, M. J.|
surfactants effect on wastewater treatment efficiency. RESULTS AND DISCUSSION Development of analytical procedure for surfactant determination in the supernatant and in the sludge The experimental procedure (Fig. 1) consisted of mixing of activated sludge with surfactant solution and leaving them in contact for 15 min. Surfactants are widely used and discharged into wastewater treatment plants, which might influence the anaerobic digestion (AD) treatment of municipal waste. In this study, the effects of typical anionic surfactants sodium dodecyl benzene6 sulfonate (SDBS) and non-ionic surfactants APG, on mesophilic anaerobic co-digestion of sludge, food waste.
The two models of wastewater containing either non-ionic surfactant Triton X or commercially available wash-up liquid were tested in a self-constructed band reactor during the laboratory studies. The photocatalyst, being typed TiO 2, was supported by porous Al 2 O 3 and modified by the addition of Cu, Fe, Zn, Ni, Mo or Co. TABLE I. Nonionic surfactant treatment periods and test concentrations during summer and winter phase studies at the Reynoldsburg Sewage Treatment Plant.a Experimental Period Summer Phase Winter Phase Pretreatment July 9 to Aug. 25 Jan. 13 to Feb. 2 background 5 mg/l treatment Aug. 26 to Sept. 8 Feb. 3 to Feb.
Quaternary ammonium compounds (QACs) are widely applied as surfactants and biocides in cleaning and personal-care products. Because of incomplete removal during wastewater treatment, QACs are present in wastewater effluents, with which they are discharged into natural waters, where they accumulate in sedimen Recent Open Access Articles. During the last 20 years in EU, the sewage sludge produced by urban wastewater treatment plants (WWTPs) has increased from million tDM (dry matter) up to million tDM ; in EU, more.
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The removal of non-ionic and anionic siit;tbctaiits,from sewage treatment plant effluents. Flocculation with jerric chloride achieved 79 N removal whilst a batch adsorption of’three /!pes of’activated carbon achieved 90 OO removal oj’anionic.
mid over 95 a6 removal of non-ionic surfactants. For a. Non-ionic surfactants (Ns) are a major source of syn-thetic organic carbon directed into the aquatic environ-ment. Ns are commonly used in detergent formulations and are finally directed in their entirety into the sewer.
Ef-ficiency of Ns removal in sewage treatment plants (sTp) is the major factor in the elimination of these substances. There is therefore a need for an up to date review of the topic.
This review will consider the breadth of current treatment methods used to remove commonly used anionic, cationic and non-ionic surfactants, work in the literature to improve these techniques and novel removal attempts and strategies to utilise surfactants in wastewater by: the wastewater is maintained at an optimum pH as determined above; and varying doses of iron are then added.
After 60 min settling, the supernatant is withdrawn for analyses. To assess the efficiency of iron on wastewater treatment, the following are determined: turbidity, chemical oxygen demand (COD) and surfactants.
Surfactants impact on wastewater treatment processes and environment presented. • Critical analysis of existing treatment methods includes recommended improvements.
• Novel surfactant removal technique analysis including development recommendations. • Analysis of the use of surfactants to enhance existing wastewater by: Wastewater Treatment Technologies Used for the Removal of Different Surfactants ammoniums (QAC) [5 - 6].
Some of the commonly used cationic surfactants are alkyl ammonium chlorides, alkyl trimethylammonium, alkyl benzyl dimethylammonium compounds, etc.
Non-ionic surfactants do not ionize in aqueous solutions because their hydrophilic. Surfactants containing wastewaters treatment by biological processes such as activated sludge is problematic due to the low kinetics of degradation and to foam production (Dhouib, et al., ).
Among the currently employed chemical unit processes in wastewater treatment, coagulation-flocculation has received considerable attention for yielding. 3. Results and discussion Elimination of APEO and their biodegradation products. Non-ionic surfactants APEO are one of the most environmentally relevant surfactants because of their persistent metabolic products APs and APECs that are proved to mimic the natural hormones by interacting with the estrogen receptor (Sonnenschein and Soto, ).The primary degradation of the.
Feasibility of the removal of surfactants from model solution and the polluted water sample by electrochemical coagulation utilizing Fe 2+ ions from a soluble anode as an alternative method was investigated in this study. As a result of the studies the removal of surfactant having a concentration of 10 mg L −1 has been achieved with an efficiency of %.
Anionic surfactants are often amenable to treatment with alum and regulation of pH followed by polymer flocculent. I like the bentonite clay powder blends that can treat a wide variety of cleaning wastewaters. They are quick, simple, and some can break emulsions stabilized by nonionic surfactants as well as remove the low parts per million.
Abstract Non-ionic surfactants (NS) are a major source of synthetic organic carbon discharged into surface water. The aim of this work was the investigation of the influence of different factors on NS removal in an activated sludge sewage treatment plant (STP).
Tensammetric analytical tools were used for fast and inexpensive NS determination. The biodegradation of these and a range of other surfactants both in wastewater treatment plants and after discharge into natural waters and application to land resulting in sewage sludge amended.
The decreases in the concentration of both anionic and non-ionic surfactants exceeded 90%. removal efficiency during wastewater treatment by using the micellar-enhanced ultrafiltration (MEUF.
Treatment of wastewater by electrocoagulation is known to effectively remove heavy metals, minerals and dyes from wastewater streams, hence making it a good treatment method for laundry wastewater.
A high removal efficiency of organic compounds is obtained due to the various mechanisms that occur in the electrocoagulation cell. surfactants removal by adsorption on activated carbon columns, was studied in this work. The adsorption isotherms of a nonionic surfactant (Triton X), utilized by an Italian metallurgic plant, on different activated carbon types were determined using two different water matrices: distilled water and the wastewater collected.
The removal of the non-ionic surfactant Triton X, dosed at 30 and mg/L in a pilot-scale subsurface horizontal flow reed bed, and the aerobic heterotrophic cultivable community associated. Surfactants are some of the most difficult things to breakdown in wastewater, especially true in the winter months, and are possibly one of the most recurring issues for wastewater plants.
Surfactants, or surface activating agents (a fancy name for soap), are generally long, stable molecules that lower the surface tension of water and can. The results showed that anionic and nonionic surfactants were removed from the wastewater by the treatment respective average removal efficiency of % and %.
However, our experiments showed that the increase in reaction time of activated carbon adsorption to 15 min sufficiently improved the removal efficiency of both anionic. Combined use of ozonation and biodegradation of anionic and non-ionic surfactants, Journal of Surfactants and Detergents, 17, pp.
– Ledakowicz, S., Miller, J.S. & Olejnik, D. Oxidation of PAHs in water solutions by ultraviolet radiation combined with hydrogen peroxide, International Journal of Photoenergy, 1, pp. 55– Surfactants have been widely used for extracting hydrophobic organic compounds from soils into aqueous phase.
Non-ionic surfactants such as Triton X and anionic surfactants such as SDS (sodium dodecyl sulphate) have been of particular interest because of their high solubilizing ability and low toxicity.
However, the resulting wastewater that contains both surfactant and organic. After the surfactant removal, the surfactant modified silica gel (SMSG) was efficiently used for the removal of dyes and herbicide from water environment through the process called adsolubilization.
Therefore, this would be a simple and efficient process for treatment of organic bearing wastewater especially textile wastewater.In recent years, study on effective removal of LAS-R 11–14 and other important non-ionic surfactants is becoming more and more active topic.
Some studies, such as this published by Sanz et al. (), demonstrated the inﬂ uence of reaction temperature on the .Mahvi et al. () studied the removal of anionic surfactants in detergent wastewater by chemical coagualation and found that when ferric chloride, alum and lime were utilized as a coagulant, COD.