efficient primary coagulants

Toxicological assessment of seeds from Moringa oleifera and ... - NCBI

East Afr Med J. 1984 Sep;61(9):712-6. Toxicological assessment of seeds from Moringa oleifera and Moringa stenopetala, two highly efficient primary coagulants for domestic water treatment of tropical raw waters. Berger MR, Habs M, Jahn SA, Schmahl D. PMID: 6535725; [Indexed for MEDLINE]. MeSH terms. Animals...

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Mechanistic Insight into the Coagulation Efficiency of ... - Springer

work is expected to influence the coagulation efficiency and the underlying mechanisms of coagulation of the PBC. An overview of the active coagulating species of the group of different PBC that have been investigated as a substitute to the conventional primary coagulants in CF operations is presented below, using the.

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Toxicological assessment of seeds from Moringa oleifera and ...

Mar 17, 2015 ... Full-text (PDF) | Pounded seeds from Moringa oleifera and Moringa stenopetala, two highly efficient primary coagulants for domestic water treatment were applied perorally to rats over a period of six weeks to determine their chronic toxicity. No toxic effects were observed during the observation p...

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How to Select a Chemical Coagulant and Flocculant. - SSWM

Chemical Coagulant and Flocculant. Anthony S. Greville. Easy Treat Environmental. Abstract. In many water treatment processes the selection of the chemical regime is of critical importance. ... process is 100% efficient, chemical enhancement will often be .... alum or ferric sulphate is the primary coagulant, then the...

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Coagulation and Flocculation in Water and Wastewater Treatment ...

Coagulation and flocculation are an essential part of drinking water treatment as well as wastewater treatment. ... The addition of coagulant chemicals to primary clarifiers, or to other dedicated physical separation processes, is an effective way of reducing the load to downstream biological processes, or in some cases for...

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Use of Moringa Oleifera Seeds as a Primary Coagulant in ...

May 11, 2010 ... Parameters of quality of the wastewaters were measured before and after the treatment to evaluate the removal efficiency on the major pollutants of concern in ... Results showed that Moringa oleifera seeds were efficient as a primary coagulant in wastewater treatment for removal of suspended solids and...

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Flocculants and Coagulants | Effluent Water - ChemTreat

For certain water sources, organic coagulants are more appropriate for solids – liquid separation. Generally, organic coagulants are used when sludge generation is desired. Furthermore, blended organic and inorganic chemicals are often more effective than either organic or inorganic coagulants alone. The correct blend...

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Coagulation efficiency of Moringa oleifera for removal of turbidity ...

Nov 4, 2010 ... The use of Moringa oleifera seed extract as a primary coagulant for a local river water source was studied with respect to turbidity removal and total coliform reduction. Aqueous solutions of powdered. M. oleifera seeds and conventional aluminium sulfate (alum) were evaluated. The quality of the treated.

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Coagulation - Oregon.gov

Organic polymers, such as polyaluminum hydroxychloride (PACl), are typically used to enhance coagulation in combination with a primary coagulant. The advantage of these organic polymers is that they have a high positive charge and are much more effective at small dosages. Even though they may be more expensive, a.

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Conventional Clarification | GE Water

When used as primary coagulants, they adsorb on particle surfaces, reducing the repelling negative charges. These polymers may also bridge, to some extent, from one particle to another but are not particularly effective flocculants. The use of polyelectrolytes permits water clarification without the precipitation of additional...

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Flocculants and Coagulants: The Keys to Water and Waste ...

efficient operation. The “art” of flocculation and coagulation has a lot more. “science” than meets the eye. A variety of flocculants and coagulants is available, with .... The primary function of the amide group in copolymers is adsorp- tion by hydrogen bonding. The primary function of the carboxylate group is to extend the...

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Cationic polymers in water treatment Part 1: Treatability ... - CiteSeerX

organic matter is treatable by different cation-active polyelectrolytes and their blends with mineral coagulants in comparison to that attainable by ... The negative influence of these reagents used as primary coagulants on the treated water quality is .... evaluation of the efficiency of the treatment process considerably.

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Efficiency of Chitosan and Alginate compared with a Chemical ...

The dose of PIX-318 required to achieve the same turbidity removal efficiency as chitosan, was almost ... primary precipitating agent in treating water from piling under the conditions presented in this thesis. However ...... removal efficiency and applicability as primary coagulants in water treatment, compared to ferric chloride...

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Raw water treatment using bentonite-chitosan as a coagulant ...

A series of batch coagulation tests were conducted by jar test to obtain the optimum dosage, pH, ratio of coagulant aid and primary coagulant, and the efficiency time for the jar test, by evaluating the standard parameters, such as turbidity, pH, colour, aluminium, and chlorine. In terms of these parameters, chitosan:bentonite...

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Coagulants & Flocculants for Drinking Water

The application of polymers as primary coagulants in cleaning up low quality natural waters for drin- king water production by direct filtration and weighted ..... coagulation. When raw waters are soft and have low mineral content (Brittany, equatorial Africa), organic coagulants are efficient as they are effective at low alkalinity.

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A Comparison Of Aluminum And Iron-based Coagulants ... - ucf stars

Yonge, David, "A Comparison Of Aluminum And Iron-based Coagulants For Treatment Of Surface Water In Sarasota County, Florida" ... concentration of coagulant and was the least effective coagulant at removing color. The ...... The primary objective of research conducted by the UCF Civil, Environmental and Construction.

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water treatment manuals coagulation, flocculation & clarification - EPA

the primary coagulant being used, to add density to slow-settling flocs or toughness so the floc will not break up in the following processes. 2.1 COAGULANT CHEMICALS. Salts of aluminium or iron are the most commonly used coagulant chemicals in water treatment because they are effective, relatively low cost, available...

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The effects of the natural coagulant Moringa oleifera and alum in ...

has been shown to be one of the most effective uses as a primary coagulant for water and wastewater treatment. (7,16-21). The aim of this study was to compare the efficiency of M. oleifera seed and alum in total suspended solids (TSS),. COD, and turbidity removal in the wastewater unit at. Bandar Abbas Refinery as one...

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Ferric chloride - Kemira.com

Kemira Ferric Chlorides (KEMIRA PIX) are effective primary coagulants based on trivalent iron (Fe3+). They are excellent for both drinking and wastewater treatment applications, including phosphorus removal, sludge conditioning and struvite control. The products also prevent odor and corrosion by controlling hydrogen...

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Primary coagulants liquid type Polyamine Polymer for waste water ...

This product is liquid cationic polymers of different molecular weight which work efficiently as primary coagulants and charge neutralization agents in liquid-solid separation processes in a wide variety of industries. It's used for water treatment and paper mills. Application Field: 1. Water clarification. 2. Belt filter, centrifuge...

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DW Module 14: Conventional Filtration Answer Key

Are focused on treatment goals that are below the regulatory Primary Maximum Contaminant Levels for ... List the primary coagulants (3 metallic salts and 1 synthetic inorganic polymer) used in the coagulation process. ... F__ Using iron slats instead of alum for coagulation is less effective over a broader pH range. 9.

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Optimizing Coagulation Process for Low to High Turbidity Waters ...

Key words: Coagulation process, turbidity removal, ferric chloride, aluminum sulfate, synthetic water .... removal efficiency. All jar test experiments were conducted at room temperature because low temperature may have an adverse effect on coagulation and ..... process is a primary and cost-effective process in water.

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The effect of using Coagulants and Coagulants Aid (Porcelanite and ...

Other parameters like TDS, E.C and Salt there is no more change in their values, therefore these values do not affect on the efficiency of water treatment .The main Values which represent different types of coagulants with different percentages have more effect on the performance of removal percentage of water turbidity and...

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an agricultural waste as a novel coagulant aid to treat high turbid ...

Feb 24, 2016 ... Based on the results of jar test, COL is an efficient coagulation aid. It has the ability to reduce both the primary coagulant dose from 600 mg l-1 to 300 mg l-1 and the residual turbidity from 5.63 to 0.26 NTU. This novel coagulant aid also reduced the total organic carbon (TOC) concentration to zero level.

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Efficiency of Cassia fistula Seed as a Natural Coagulant in Raw ...

evidence was found in pH of water treated with Cassia fistula seeds as a coagulant. Application/Improvements: This work proved that use of Cassia fistula for raw water treatment from Sinú River could serve as a coagulation aid and not as a primary coagulant. 1. Introduction. Raw water purification includes physical and...

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Determining an Effective Alum Dose - AguaClara - Dashboard

Apr 24, 2008 ... In water treatment processes, the primary electrolyte introduced into solution as the primary coagulant is aluminum sulfate (Al2(SO4)3), also known as Alum. Flocculation is the subsequent process whereby particles collide and form large aggregates, or flocs. Flocculation involves producing collisions...

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Efficiency Comparison of PolyDADMAC Coagulant with Ferric ...

Background& Objective: PolyDADMAC is used in water and waste water treatment as a primary organic coagulant which can neutralize colloidal material with negative charge and reduces sludge volume compared with Mineral coagulants. The aim of this study was to evaluate and compare of PolyDADMAC with ferric...

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Polyaluminum Chloride products for water purification and potable ...

Aluminum has long been used as a primary coagulant to clarify water for drinking and industrial process uses. Historically ... Increased sludge handling costs, pH adjustments and regulations requiring higher finished water quality are responsible for driving the development of more cost-effective and efficient coagulants.

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Optimization of coagulation-flocculation parameters using a ...

Jul 23, 2014 ... PDA data revealed that aggregation rate and steady-state variance are primary parameters as both have substantial influence on coagulation-flocculation ef- ficiency. However, the average steady state ratio, although an important parameter, had a lessened impact on coagulation-flocculation efficiency.

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Review on Chemical treatment of Industrial Waste Water * OPSAHU

inorganic salts and polymeric organic coagulants are used for primary coagulation, as coagulant aids and for sludge dewatering; lime and ... carbon (PAC) can remove taste and odour compounds and micro pollutants such as atrazine, bentonite aid's coagulation, and .... examined and have proven to be more efficient in.

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chapter 13. Treatment processes, coagulation - Ministry of Health

They are produced with varying degrees of ionicity and in a range of molecular weights. Generally, the higher the MW, the more effective the polyelectrolyte. Cationic polyelectrolytes usually perform better in NZ waters. To achieve their full effectiveness, polyelectrolytes are added after the primary coagulant (eg, alum).

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The effectiveness of oil palm trunk waste derived coagulant for ...

have a wider effective flocculation dosage range [7-10] this first-of-its kind study was warranted to evaluate the potential of oil palm trunk waste-derived ... Figure 2. shows the COD and SS removals by OPTS as primary coagulant at various (a) pH with controlled dosage of 400 mg/L and (b) dosages with optimum pH, 7.

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Using Moringa Seeds as Coagulants in Developing Countries ...

Jun 1, 1988 ... A few traditional plant flocculants such as those found in Moringa seeds have been observed to act as primary coagulants and have been recommended for domestic water treatment in rural areas of Africa and Asia, where people cannot afford conventional coagulants. Once a plant has been shown to...

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Toprak Home Page

Alum coagulation works best for a pH range of 5.5 to 8.0; however, actual removal efficiency depends on competing ions and chelating agent concentrations. ( 1 ) Sodium aluminate is an ... Polyelectrolytes are water-soluble organic polymers that are used as both primary coagulants and coagulant aids. Polyelectrolytes are...

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Water Treatment Chemicals - Industrial Effluent Capabilities

Low molecular weight and viscosity ensuring complete distribution and mixing of the polymer in the water. • Inorganic primary coagulants: A wide range of PAC based products, Ferric Sulphate and Ferric Chloride. • Anti-foams: Wide range of very effective anti-foam products. Our range of products include: Wastewater audits...

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ULTRION Coagulants | Ecolab

ULTRION Coagulants were developed to handle the wide seasonal variation of surface waters to produce a consistent, high quality, and economical water ... Higher actives, therefore, lower carbon footprint by freight savings; Increasing the efficiency of water clarification; Reduce anion loading if water is being used in a...

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Application of Flocs Analysis for Coagulation Optimization at the ...

of coagulant performances at 19°C and 5°C for the Split Lake water treatment plant. The results of this research ...... Therefore, the efficiency of turbidity removal at high and low temperature was the focus of ..... Among these coagulants, alum has been widely used as a primary coagulant in water treatment for many decades.

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Effectiveness of Moringa oleifera Coagulant Protein as ... - waset

Turbidity removal efficiency was resulted between % 80 to % 99 by Moringa Oleifera Coagulant Protein as coagulant aid. Dosage of coagulant and coagulant aid decreased with increasing turbidity. In addition, Moringa Oleifera Coagulant Protein significantly has reduced the required dosage of primary coagulant. Residual...

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Pre-polymerised inorganic coagulants and phosphorus - Water ...

The superior performance of pre-polymerised coagulants is attributed to their wider working pH range, a lower sensitivity to low water temperature, lower doses required to achieve the equivalent treatment efficiency, and lower residual metal-ion concentra- tions. Eutrophication has been recognised as one of the main.

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Study of the coagulation process in wastewater treatment of dairy ...

May 23, 2014 ... Addition of 20 mg/L of both two coagulants aid (PFS and PAA) effectively reduced the use of Alum and it was effective in COD removal. Keywords: Alum .... All experiment was carried out using 1 L pre-produced wastewater with the primary pH of 7.5 and 3200 mg/L COD concentration. Different types of...

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