coagulation Articles
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The effectiveness of humic acids coagulation with the use of cationic polyacrylamides
The chemical coagulation process is a popular method for eliminating the precursors of disinfection by-products. This study presents the results of a laboratory experiment which investigates the use of cationic polyacrylamide copolymers (CPAMs) as primary coagulants in the purification of solutions containing humic acids (HA). A number of polymers with various molecular weight and charge density ...
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The effectiveness of humic acid coagulation with the use of cationic polyacrylamides
The chemical coagulation process is a popular method for eliminating the precursors of disinfection by-products. This study presents the results of a laboratory experiment which investigates the use of cationic polyacrylamide copolymers (CPAMs) as primary coagulants in the purification of solutions containing humic acids (HA). A number of polymers with various molecular weight and charge density ...
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Zirconium and chitosan coagulants for drinking water treatment – a pilot study
Scientists continuously search for alternative coagulants that would be able to outperform traditionally used aluminium (Al) and iron (Fe). Use of a novel metal coagulant zirconium (Zr) has been associated with enhanced organic matter reduction. On the other hand, eco-friendly non-metal solutions, such as chitosan, can provide non-toxic sludge and water with no metal residue. In fact, Zr and ...
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Natural Coagulants/Flocculants: What is The Best for Water Treatment?
The question of what natural coagulant is best for water treatment has been stirring up quite a storm in the world of environmental science these days. With different coagulant options available, it can be difficult to decide which natural coagulant is most suitable to sustainably optimize water treatment in an environmental friendly way. Indeed, figuring out what natural coagulant is best for ...
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Advanced phosphorus removal via coagulation, flocculation and microsieve filtration in tertiary treatment
The applicability of microsieve technology together with coagulation and flocculation for advanced phosphorus removal was investigated. A pilot unit including a microsieve with 10 μm mesh size was operated continuously with secondary effluent from Ruhleben wastewater treatment plant in Berlin. By applying a pretreatment of 0.07–0.09 mmol/L (as metal) coagulant and 1.5–2 mg/L cationic polymer, ...
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Evaluation of chitosan as a natural coagulant for drinking water treatment
Chitosan, a natural biopolymer, was evaluated for its ability to be used as a coagulant to treat water for potable use both in isolation and in combination with other water treatment technologies, specifically ion-exchange and activated carbon. Chitosan was found to be very effective for particle removal at doses far below those required for equivalent turbidity removal by inorganic coagulants. ...
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Physical and chemical impacts of conventional unit processes and coagulants on the dinoflagellate, Ceratium hirundinella
The freshwater dinoflagellate, Ceratium hirundinella (C. hirundinella) with its complex morphology and robust thecal plate cell covering, is responsible for extensive problems during drinking water production. To have a better understanding of these problems, knowledge of what happens to the integrity of the cells after each step of the conventional water treatment process is essential. ...
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High Rate Treatment of CSO/SSO Flows Using a High Density Solids Contact Clarifier/Thickener - Results from a Pilot Study
ABSTRACT A two-month pilot study was conducted at the Village Creek Wastewater Treatment Plant in Birmingham, Alabama to test the technical feasibility of utilizing a high-rate, highdensity solids contact clarification process for the treatment of sanitary sewer overflow (SSO). Five phases of testing were performed over the two-month period. During Phase I testing, optimum steady state operating ...
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City of Stromsburg, Nebraska - Case Study
In May 2011, AdEdge Water Technologies was selected among other vendors by Miller & Associates to supply a turnkey arsenic and manganese treatment system for the Village of Stromsburg, Nebraska. Arsenic levels in the water ranged from 0.0178 mg/L to 0.0276 mg/L and the manganese levels fluctuated between 0.05 mg/L and 0.12 mg/L, well above the EPA maximum contaminant levels of 0.010 mg/L ...
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Natural Flocculants versus Synthetic Polymers for Wastewater Treatment: An In Depth Study
Understanding Natural Flocculants versus Synthetic Polymers in Wastewater Treatment In the intriguing world of coagulation and flocculation, suspended solids and color removal revolve around destabilizing impurities in wastewater. These processes neutralize charges to facilitate efficient solid-liquid separation resulting in cleaner effluents. I will discuss below the differences between natural ...
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How to Make Wastewater Treatment Flocculation Sustainable, Non Toxic, and Efficient
If you manage a water treatment plant or consult those who do, you know wastewater treatment flocculation is essential to delivering clean, safe, and reliable water. Following coagulation water treatment, flocculation encourages small, suspended particles in water to clump together into flocs, making them easy to be removed by post filtration. However, although flocculation helps remove ...
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One of the largest ipp power plants in the middle east uses membrane desalination for boiler feed water
The Facility Sidi Krir Unit 3 & 4 Power Plant, developed by InterGen and Edison SpA, is located about 30 kilometers west of Alexandria, Egypt. It is a natural gas fired power plant and at 685 MW generating capacity, is the largest IPP thermal power plant in the Middle East. The plant consists of two power blocks, which share a common membrane based Seawater Desalination system for their ...
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`Dry` and `liquid` chitosan in stormwater treatment.
Disclaimers: – This post offers my view on the topic based on my review of scientific literature and manufacturer’s documentation available online as well as my own hands-on experience with chitosan and other chemicals in water treatment. – Links to third party websites in this post are not to be considered as my endorsement of their products. What is chitosan? Chitosan, a ...
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Uptown shopping center - Case Study
ChitoVan Chitosan Lactate Cartridge Pretreatment and Sand Filtration Urban development and redevelopment present a host of challenges - not the least of which is managing site stormwater runoff. In a northern suburb of Vancouver Island’s beautiful city of Victoria, BC the stormwater challenge was met and bested through the application of both passive and active chitosan stormwater ...
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Principle of Screw Press Dewatering Machine
In the realm of waste management, the screw press dewatering machine stands as a marvel of engineering, employing a sophisticated principle to efficiently separate solids from liquid. This innovative technology plays a crucial role in various industries, from municipal wastewater treatment plants to industrial processes generating sludge. In this post, we'll delve into the principle behind the ...
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Processing Wastewater Sludge Using Dewatering Containers
The relative cost of dewatering equipment varies widely and is directly related to the processing rate. For smaller utilities that need to dewater sludge in batches, dewatering containers are an alternative that can be relatively inexpensive and simple when compared to other technologies on the market. The most common type of dewatering container is based on a roll-off box design, although any ...
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