cationic polyacrylamide efficient sludge dewatering
cationic polyacrylamide efficient sludge dewatering
Yili WANG | Beijing Forestry University | College of Environmental … Cationic polyacrylamides have been employed widely to improve sludge dewatering perfo
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Yili WANG | Beijing Forestry University | College of Environmental …
Cationic polyacrylamides have been employed widely to improve sludge dewatering performance, but the cationic units are randomly distributed in the molecular chain, which restricts the further …
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Flocculation and dewatering of the Kaolin slurry … – ScienceDirect
Cationic polyacrylamide (CPAM) has a molecular weight of 1.2 × 10 7 and anionicity of 30%. Anionic polyacrylamide (APAM) and non-ionic polyacrylamide (NPAM) have a molecular weight of 2 × 10 7. The PAM and analytical-grade PAC used in this study were purchased from Macklin (Shanghai, China). 2.2. Experimental methods2.2.1. Dosing conditions
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Preparation of amphiphilic cationic polyacrylamide (CPAM) with cationic …
Flocculation is an important pretreatment technology for sludge dewatering, and the flocculant’s performance is the key factor to determine the flocculation effect. Cationic polyacrylamide (CPAM) is commonly used in dewatering and conditioning of printing and dyeing sludge (PD sludge), and the research of high-efficiency flocculant is a hot spot in the field of PD sludge dewatering …
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Optimizing the Conditions of Cationic Polyacrylamide Inverse … – MDPI
Polyacrylamide, a water–soluble polymer formed by the polymerization of acrylamide monomers, is among the most used chemicals for wastewater treatment and sludge dewatering [4,5,6]. Cationic polyacrylamide (CPAM) is one of the most widely applied polymers due to its high performance in flocculation, sludge dewatering, and harvesting …
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Synthesis, Characterization, and Flocculation Properties of Branched …
Its flocculation properties were evaluated using jar test with sewage. Its turbidity removal efficiency for sewage was 80% or higher. The COD removal efficiency for sewage was 50% or higher. The branched cationic polyacrylamide can be used as a novel flocculant in water and wastewater treatment.
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Understanding the synergistic mechanism of PAM-FeCl
Pressurized vertical electro-osmotic dewatering (PVEOD) has been regarded as a feasible method to achieve sludge deep-dewatering, but the dewatering efficiency is still challenged by high electric resistance. This study employed cationic polyacrylamide (CPAM) as a skeleton builder to enhance electro-osmotic flow in PVEOD.
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Advances in Chemical Conditioning of Residual Activated Sludge … – MDPI
Municipal sludge is characterized by high organic matter content, high viscosity, and fine particles, resulting in poor dewatering performance. This article analyzes the composition and properties of municipal sludge, examines the factors affecting the dewatering performance of sludge and the mechanisms corresponding to each influencing factor, and introduces chemical conditioning in detail.
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Materials | Free Full-Text | Production of Cationic Starch-Based … – MDPI
Synthetic polymeric flocculants including cationic polyacrylamide or combined materials are excellent in terms of dose and dewatering efficiency , but their cost is relatively high. However, such types of flocculants may cause secondary pollution and health hazards due to remaining unreacted monomers . Consequently, synthetic polymeric …
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UV-initiated polymerization of hydrophobically associating cationic …
To study the dewatering performance of P(AM–DAC–BA), the textile sewage sludge dewatering was evaluated by measuring both the residual turbidity and moisture content of the filter cake. At 50 mg L −1 P(AM–DAC–BA) and pH 11.6, the residual turbidity of the supernatant and moisture content of the dewatered filter cake reached 5.5 NTU and 73.2%, respectively.
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How to Optimize Polymer Efficiency for Better Sludge Dewatering – PNWS-AWWA
Fairfield-Suisun Sewer District, CA. Solano County, CA, 40 miles North San Francisco. Design capacity: 24 MGD tertiary treatment/ UV. Population served: 135,000. Polymer use for dewatering (screw press) and thickening (GBT) Problems with existing polymer system. Struggled to make proper polymer solution.
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Research on a new cationic polyacrylamide (CPAM) with a cationic microblock structure and its enhanced effect on sludge condition and dewatering …
Flocculation is one of the commonly used sludge conditioning methods in water supply plants, which can improve the sludge dewatering performance by reducing the specific resistance of sludge (SRF), decreasing the amount of sludge, and finally lowering the transportation cost and subsequent disposal cost of sludge.
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Revitalizing urban lake cleanup: optimizing flocculation and dewatering of dredged sludge using cation polyacrylamide | SpringerLink
This study investigated the effect of cation polyacrylamide (CPAM) on the dewatering performance of dredged sludge by batch experiments and compared it with a novel organic agent (DRC-300) and a traditional inorganic agent (PAC).
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Study on the regulation of sludge dewatering by hydrophobically associating cationic polyacrylamide coupled with framework materials – ScienceDirect
To further improve the performance of sludge dewatering, this study used the UV-light-initiated aqueous micellar polymerization method to obtain hydrophobic associating cationic polyacrylamide (HACPAM) as a flocculant and coupled it with quartz sand and fly ash to investigate sludge flocculation and dewatering.
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A review of flocculants as an efficient method for increasing the efficiency of municipal sludge dewatering: Mechanisms, performances, influencing …
Abstract Mechanical sludge dewatering is one of the stages of the municipal wastewater treatment process, which allows the amount of generated sludge and the cost of its transport and management to be reduced. Achieving a high degree of dewatering is possible thanks to the use of flocculation technology.
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Preparation of amphiphilic cationic polyacrylamide (CPAM) with cationic microblock structure to enhance printing and dyeing sludge dewatering and …
Cationic polyacrylamide (CPAM) is commonly used in dewatering and conditioning of printing and dyeing sludge (PD sludge), and the research of high-efficiency flocculant is a hot spot in the field of PD sludge dewatering.
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The enhanced dewaterability of sludge by a starch-based flocculant combined with attapulgite | Scientific Reports – Nature
1 Citations 1 Altmetric Metrics Abstract Coagulation/flocculation is one of the most widely used and cost-effective pretreatment methods for improving the dewaterability of sludge.
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Preparation of a hydrophobically associated cationic polyacrylamide and its regulation of the sludge dewatering performance – IWA Publishing
Xin Feng, Jinchuan Deng, Junjie Wan, Jinqiang He, Zhenjun Huang, Aoqi Yan; Preparation of a hydrophobically associated cationic polyacrylamide and its regulation of the sludge dewatering performance. Water Sci Technol 1 October 2020; 82 (7): 1350–1369
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Evaluation of hydrophobically associating cationic starch-based flocculants in sludge dewatering | Scientific Reports – Nature
Wei, L. et al. Dewatering efficiency of sewage sludge during Fe 2+ activated persulfate oxidation: Effect of hydrophobic hydrophilic properties of sludge EPS. Water Res. 181 , 121176 (2020 …
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Optimization Conditions to Obtain Cationic Polyacrylamide Emulsion Copolymers with Desired Cationic Degree for Different Wastewater Treatments – MDPI
Cationic polyacrylamides (CPAMs) are widely utilized due to their excellent performance in flocculation and sludge dewatering []. Numerous studies have been conducted on CPAM synthesis technologies, including grafting, free radical polymerization, and polymer modification [ 3 ].
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UV-Initiated Polymerization of Hydrophobically Associating Cationic Polyacrylamide Modified by a Surface-Active Monomer: A Comparative Study of …
Two cationic polyacrylamides, PAA and PAD, were synthesized for sludge dewatering. The advanced instruments such as 1H NMR, FTIR, and SEM were used to characterize the two copolymers. Their hydrophobic association properties in water were investigated by viscosimetry as well as the dewatering performance studied by the sludge dewatering experiment. The results showed that the optimum …
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