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Activated sludge
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Two heterotrophic nitrifying bacterial strains, D2 and D7 were isolated from an activated sludge of sponges in a laboratory-scale downflow hanging sponge reactor. The aim of this work was to isolate heterotrophic nitrifying bacteria from DHS activated sludges and to determine the ammonium removal efficiency of NRPW using the isolates.
10p
viamancio
04-06-2024
1
0
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In this study, we synthesized magnetic activated carbon (MAC) derived from Litsea glutinosa seeds, which was applied to eliminate methylene blue and nickel ions in the aeration tank of the biological treatment system. Structural characteristics and adsorption properties of MAC were studied. The obtained results revealed that the removal efficiency of these pollutants significantly improved as a combination of MAC and activated sludge, especially in the case of nickel ions removal.
7p
dianmotminh02
03-05-2024
2
1
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Canna edulis. Ker starch processing wastewater from craft villages contains high organic concentration such as starch, cellulose, xylan, protein… and especially high starch concentration after the states of grinding, sedimentation and filtration. The concentration of COD and BOD5, SS and coliform of wastewater are hundreds times higher than standards.
7p
vilarry
01-04-2024
2
1
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Aerobic granular sludge has been applied in batch reactors SBR since the 1970s and it has been extensively studied with different substances in the following years. Compared with activated sludge, aerobic granular sludge has a good granular structure, high biomass retention capacity, and ability to remove more toxic compounds in wastewater.
4p
viellison
28-03-2024
6
1
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The protection of the environment through the recycling of waste brought back many economic-social benefits. Demand for the recycling of the large quantity of activated sludge derived from biological treatment stage of the wastewater treatment plant has become urgent in recent years. This study examined successfully the batch biosorption of Sulfur Brown GD on the recycled material prepared by the acid washing biomass of activated sludge.
5p
vidoctorstrange
06-05-2023
5
1
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This work demonstrated the potential of US for mitigating membrane fouling. However, the integration of the US transducers within the membrane system will be a major challenge for the application of US in membrane cleaning. It is more appropriate that US is used as pre-treatment to the membrane system, the transducers can be placed prior to the coagulant feed line. Further work on the determination of the detailed mechanisms associated with enhancing coagulation would enable optimisation of the system with regard to process, cost and energy efficiency.
108p
runthenight05
01-03-2023
5
2
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Anionic and non-ionic surfactants have been detected in the influents to and effluents from wastewater treatment plants (WWTPs). Linear alkylbenzene sulphonates (LAS) and alkylphenol ethoxylates (APEO) are the most frequently detected anionic and non-ionic surfactants in urban wastewater. The aim of this study was to assess the effect of the presence of anionic and non-ionic surfactants in the influent to WWTPs on activated sludge processes.
111p
runthenight05
01-03-2023
3
2
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The aim of this project is to provide a summary of the current knowledge on energy recovery options from wastewater treatment plants sludge and/or biosolids. This covers technologies as well as data from case studies and research experimental results. The focus of the study is the ATP. The project methodology comprised two stages. The first stage involved a review of the current literature.
166p
runthenight07
01-03-2023
4
2
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The primary objectives of this study were to: Investigate the fouling potential, and characterise the organic components of the membrane foulant layers, of clarified activated sludge and lagoon effluent obtained from the WTP; Investigate the fouling propensities of EOM and AOM derived from a blue-green algal culture as it passed through the growth cycle, ie., for which the cells had not been subject to physical disruption; Determine any difference in the fouling propensity of EOM and AOM and relate it to organic composition.
99p
runthenight07
01-03-2023
2
2
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Municipal wastewater treatment plants generally utilise biological activated sludge processes to remove organic compounds and nitrogen. The biological nitrogen removal (BNR) occurs in two steps, nitrification (ammonium removal) and denitrification (nitrates removal). This study focused on a medium-sized wastewater treatment plant (WTP) which experienced poor nitrification for years, mainly when the weather temperature drops.
125p
runthenight07
01-03-2023
5
2
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In this study, sludge-derived activated carbon or activated sludge was fabricated from the sludge generated by the WWTP of an industrial brewery through a pyrolysis technique to achieve a new adsorbent for ammonium removal.
13p
vidudley
20-02-2023
4
2
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In this study, a composite material (ACS) was successfully synthesized from activated carbon (AC) derived from soybean curd and sludge from the supply water treatment process using FeCl3. Subsequently, the ACS was employed as a heterogeneous catalyst for the degradation of Paracetamol (PRC) in solutions under conditions of the Fenton process.
9p
vicedric
08-02-2023
6
1
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The application of microalgae-based wastewater treatment systems using wastewater as a source of nutrients has been successfully developed in recent years and has brought about positive results in wastewater treatment and microalgal biomass recovery while producing valuable products. This study presents the application of a microalgae and activated sludge (AS) co-culture in a low agitation photobioreactor (aPBR), which could reduce energy usage.
5p
vimalfoy
08-02-2023
1
1
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Many pharmacologically active compounds are chiral species, and their therapeutic or toxicological effects might differ between isomers. Herein, we develop a fast and sensitive chiral analysis methodology for the determination of eight pharmaceuticals, considered as emerging environmental pollutants and belonging to two different chemical classes, in wastewater and sludge samples.
9p
vironald
15-12-2022
12
2
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This research was to evaluate the performance of moving bed biofilm reactors (MBBRs) treating wastewater containing alcohol. The experiments were conducted with the combination of an anaerobic reactor and an aerobic reactor successively.
7p
viaudi
04-08-2022
6
1
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Nghiên cứu đã xây dựng mô hình toán học để mô phỏng một số quá trình sinh học diễn ra trong hệ thống MBBR (Moving Bed Biofilme Reactor), trong đó tập trung vào các quá trình loại bỏ COD và xử lý nitơ trong nước rỉ rác. Nghiên cứu được thực hiện trên cơ sở phát triển các phương trình toán học được sử dụng để mô tả các quá trình bùn hoạt tính và các quá trình màng sinh học biofilm dựa trên nguyên lý ASM 1 và ASM 3 (Active Sludge Model) và các điều kiện thực tế nước rỉ rác của Việt Nam.
6p
vinikolatesla
25-03-2022
40
3
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In the present paper, a new process, whose acronym is UTN (University of Trento) system, is proposed and tested at full scale for reducing the amount of sludge of the wastewater treatment plant. The UTN system allows sludge reduction in conventional activated sludge (CAS) due to the cell lysis, the sludge decay and, above all, to the selection of slow growing microorganism.
8p
thebadguys
15-01-2022
11
0
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In this study, the commercial powder activated carbon (PAC) was added to a bench scale conventional activated sludge (CAS) system to enhance phenol removal. The mixed liquor suspended solid (MLSS) concentration of CAS with adding PAC was stable in all stages of operation, while MLSS concentrations in CAS without PAC addition sharply decreased as the Phenol loading reached 1.8 g phenol/L.day.
7p
paddington36
04-01-2022
16
0
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This research presented some results on the physicomechanical properties and environmental pH effects of unburned materials made from WS, FA, and WG binder. The bonding and microstructure of the materials had to be studied by Fourier infrared spectroscopy (FTIR) and scanning electron microscope (SEM).
8p
nguaconbaynhay12
13-06-2021
12
1
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This article presents aquatic wastewater treatment with the addition of probiotics. Due to the high salinity (5–10‰), the microorganisms are inactive because plasmolysis occurs in the presence of table salt, the contraction of the protoplasm away from the cell wall of the bacteria due to dehydration under the action of osmotic pressure, leading to gaps between the cells and the cell membranes.
8p
caygaocaolon10
19-02-2021
7
2
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