flocculator Articles
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Flocculation of a lactic acid fermentation broth by gelatin
In the current study, flocculation of a lactic acid (LA) fermentation broth with three kinds of flocculants was performed in order to reduce membrane pollution during its subsequent electrodialysis. Gelatin was selected as the most suitable flocculant in comparison with others in terms of flocculation rate (FR), suspended solid (SS) removal rate, and filtration flux of the supernatant. Optimal ...
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Flocculating and dewatering performance of hydrophobic and hydrophilic solids using a thermal-sensitive copolymer
Thermal-sensitive polymers have been tested on settling, compacting or dewatering of clays or oil sand tailings. However, not much attention has been paid to explore the effect of temperature on flocculating performance using thermal-sensitive polymers. In this study, poly(NIPAM-co-DMAPMA) was synthesized and employed to investigate the flocculating and re-flocculating performance of ...
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Effect of pH on the flocculation behaviors of kaolin using a pH-sensitive copolymer
pH-sensitive copolymers have been widely introduced to achieve rapid dewatering and consolidation of solids in mining and oil sands processing wastes. But no more attention has been given to the flocculation efficiency of solid suspensions as a function of pH using pH-sensitive copolymer. In this study, a pH-sensitive copolymer was synthesized and employed to investigate the flocculation ...
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The safe use of cationic flocculants with reverse osmosis membranes
Abstract Flocculants are used in combination with coagulants to agglomerate suspended particles for removal by filtration. This technique is used extensively in all types of surface waters to reduce the silt density index (SDI) and minimise membrane fouling. Although organic cationic flocculants are particularly effective, their widespread use in membrane applications is limited because of ...
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Use of flocculants for increasing permeate flux in anaerobic membrane bioreactors
Biomass retention, required for high rate anaerobic wastewater treatment, can be accomplished coupling an anaerobic bioreactor with membrane filtration. However, low flux seems to be a common factor when operating anaerobic membrane bioreactors (AnMBRs). Modification of biomass properties may represent a strategy for improving membrane flux. The addition of flocculants was tested as a tool for ...
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Combination of microalgae cultivation with membrane processes for the treatment of municipal wastewater
The treatment of wastewater by microalgae cultivation has attracted more and more attention. However, the way to harvest microalgae cells from the wastewater and the treatment of the large quantity of residual solution have become critical issues. In this work, a new approach for the treatment of municipal wastewater is presented. The combination of flocculation for removing mainly microalgae ...
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Comparison of optional process configurations and operating conditions for ceramic membrane MF coupled with coagulation/flocculation pre-treatment for the removal of NOM in drinking water production
The increase of Natural Organic Matter (NOM) in natural water sources, partly caused by progressing climate change issues, is a growing concern for drinking water production. In recent years, membrane technology like Reverse Osmosis (RO) or Nanofiltration (NF) has been successfully applied as a robust solution for NOM removal to produce potable water. However, coagulation/flocculation ...
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Brine Filtration
Edible Liquid Salt PurificationWithout adding flocculant, resistant to pollution, high filtration accuracy, stable &high quality refined brine. Nanofiltration Systems Sulfate RemovalThe membrane has charged groups that selectively reject multivalent anions such as sulfate ion. Primary Brine PurificationCeramic Brine Membrane Purification Solution (hereinafter called CBS Process). JIANGSU ...
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Flocculation-Flotation vs. MBR for High MLSS Secondary Clarification
Abstract Rendering plants produce high strength wastewater with high TSS, FOG, BOD and TKN. At one such plant it was decided to install a primary DAF followed by an anaerobicanoxic-aerobic treatment system for TSS, FOG, TKN and BOD removal. Since wastewater is a high strength (TSS up to 10,000, FOG up to 3,000, TKN up to 350 and BOD up to 6,000 mg/l, respectively, bioreactors will produce high ...
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Assessment of water treatment processes: detailed organic matter characterisation and membrane fouling indices at the Loddon Water Treatment Plant, Victoria, Australia
Recent advances in membrane technology have led to its broad application, and reverse osmosis (RO) systems now represent the fastest growing segment of the desalination market. Its performance is hindered by membrane fouling. In this study pre-treatment methods to reduce RO fouling were investigated including flocculation, adsorption and ion exchange. Detailed organic characterisations were made ...
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CETCO scores a perfect 10 with RM-10 - eliminating hazardous waste disposal
CETCO Oilfield Services’ Industrial Wastewater Treatment Division has over 30 years experience in treating industrial wastewater, helping clients meet compliance requirements and reduce costs. Additionally, CETCO Oilfield Services’ RM-10® flocculant has been successfully applied in the aerospace sector, turning a previously hazardous waste product into a delisted sludge. The aerospace facility ...
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Removal and fate of emerging contaminants combining biological, flocculation and membrane treatments
An experimental study combining biological treatment with flocculation (F) and ultrafiltration (UF) membrane technology was conducted, separately and in combination, seeking to increase insight into the capability of such treatment processes to remove emerging contaminants (ECs). The occurrence and removal efficiencies of 17 ECs are reported for wastewater from Mexico City. Results showed that ...
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Comparison of enterovirus and adenovirus concentration and enumeration methods in seawater from Southern California, USA and Baja Malibu, Mexico
Despite being important etiological agents of waterborne illness, the sources, transport and decay of human viruses in recreational waters are not well understood. This study examines enterovirus and adenovirus concentrations in coastal water samples collected from four beaches impacted by microbial pollution: (1) Malibu Lagoon, Malibu; (2) Tijuana River, Imperial Beach; (3) Baja Malibu, Baja ...
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Performance of a novel recycling magnetic flocculation membrane filtration process for tetracycline-polluted surface water treatment
A recycling magnetic flocculation membrane filtration (RMFMF) process integrating circulating coagulation, magnetic enhanced flocculation and membrane filtration was investigated for the treatment of surface water micro-polluted by tetracycline, a typical pharmaceutical and personal care product. A bench-scale experiment was conducted and several water quality parameters including turbidity, ...
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Effects of recycling flocculation membrane filtration on drinking water treatment
Recycling flocculation membrane filtration (RF-MF) and coagulation membrane filtration (C-MF) were investigated for removal of natural organic matter (NOM) from Luan river in this study. The effectiveness of recycling flocculation pretreatment on both NOM removal and membrane filtration were assessed under different concentrations of coagulant and reflux flocs. Under the conditions of coagulant ...
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Corrugator Sheet Plant 1
A facility that made corrugated sheet board was using a specialty flocculant to treat their wastewater. Unfortunately, it treated the water only one half of the time to acceptable levels for reuse as starch makeup. The facility had paid $45,000 in the first 6 months of the year in chemical costs and $40,000 in haul-off costs to haul the majority of the treated water offsite. Integrated ...
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The dye or humic acid water treatment and membrane fouling by polyaluminum chloride composited with sodium alginate in coagulation–ultrafiltration process
Composite flocculants have been extensively studied and applied in recent years in order to improve the water treatment efficiency. In this study, a new composite flocculant prepared by polyaluminum chloride (PAC) and sodium alginate (SA) was used to treat dye and humic acid water in the coagulation–ultrafiltration process. The subsequent effects of PAC/SA on ultrafiltration membrane ...
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Low dissolved oxygen membrane bioreactor processes (LDO–MBRs): a review
Aeration energy demands for bioprocesses and membrane scouring in membrane bioreactors (MBRs) account for 50% to over 70% of the total operational energy consumption. Energy saving achieved by operating MBRs under low dissolved oxygen (DO) would be an interesting approach to bring MBRs to higher levels of efficiency. This review paper is first carried out to provide a systematic investigation on ...
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Self-Cleaning Filters for Pretreatment of Membrane and UV Water Treatment Systems
The removal of suspended solids is necessary to protect membrane systems and prevent the “shadow effect” in ultraviolet (UV) treatment systems. Recent field data has shown the effectiveness of automatic self-cleaning filters in removing suspended solids down to less than 3 microns in size without flocculants, pre-coats or granulated media. Tests have demonstrated the complete removal of ...
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Pollutants, Aquaco Water Recycling Ltd can offer a solution
With ever increasing demands from the Environment Agency to minimise pollutants in water effluent arising from industrial processes, Aquaco water recycling ltd can offer a solution which works well in many industries. This is the Red Box Electro Coagulation system whereby contaminants are flocculated by an electrical process into a size which can then be filtered, pressed and disposed of. The ...
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