Contents of this article
What is the usage and dosage of flocculant?
Flocculant chemical reaction?
What is the difference between flocculant and accelerator?
What is the difference between clarifier and flocculant?
What is the difference between polymer coagulant and flocculant?
What happens if too much flocculant and coagulant aid is added?
What is the difference between anionic flocculants and cationic flocculants?
What should I do if there is too much flocculant?
How to use and dosage of flocculant?
1. When used in sewage sedimentation, the recommended concentration is 0.1%.
2. Sprinkle the solution evenly into tap water first, and stir at medium speed for 40-60 minutes to fully dissolve the polymer in the water before adding it.
3. During the experiment, take 100ml of wastewater, add 10% polyaluminum chloride solution, and slowly stir, use a container to slowly add PAM solution dropwise, 0.5ml each time, according to the size and flocculation of the generated alum flowers. It is determined by the tightness of the body, the clarity of the supernatant liquid, the settling speed, the dosage, etc.
Flocculant chemical reaction?
Most will react in the presence of water.
1. The main component of quicklime is calcium oxide. When it meets water, it forms calcium hydroxide, which is alkaline.
2. Flocculants are divided into inorganic flocculants and organic flocculants, and the actual formula is used.
3. Inorganic flocculants mainly include: aluminum sulfate, aluminum chloride, ferric sulfate, ferric chloride, etc. These substances can easily precipitate when encountering alkaline solutions, making the flocculants ineffective.
4. Organic flocculants Polyamine type, quaternary ammonium type, acrylamide copolymer and other types of organic flocculants are high in cost, less corrosive and come in many types.
5. There is also microbial flocculation newly developed in recent years.
What is the difference between flocculant and accelerator?
The differences are as follows:
Flocculant refers to a water-soluble polymer that can accelerate the separation of solids and liquids. The most commonly used one is polyacrylamide. Coagulants and coagulants are other names for flocculants.
Accelerating setting agent: An admixture added to concrete that can quickly set and harden the concrete. The main types are inorganic salts and organic substances [1]. The dosage of powdery solid only accounts for 2% to 3% of the cement content in concrete, but it can make the concrete initially set within 5 minutes, and the accelerating setting agent can set within 12 minutes. In order to achieve the purpose of rapid solidification of concrete in emergency repairs or tunnels.
What is the difference between clarifier and flocculant?
Clarifying agents are used to maintain or improve the transparency of clear shampoos. Commonly used ones include ethanol and propylene glycol, and new ones such as fatty alcohol citric acid, etc. Thickeners are used to increase the viscosity of shampoo. Commonly used thickeners include: inorganic salts, polyethylene glycol fatty acid esters (also known as fatty acid polyoxyethylene esters), amine oxides, and water-soluble colloids. raw material.
The flocculant is mainly a group with positive (negative) electricity and some particles or particles with negative (positive) electricity in the water that are difficult to separate and are close to each other, reducing their potential and making them in a unstable state, and uses its polymerization properties to concentrate these particles and separate them by physical or chemical methods.
The agents generally used to achieve this purpose are called flocculants. Flocculants are mainly used in water supply and sewage treatment fields.
What is the difference between polymer coagulant and flocculant?
Polymer coagulants and flocculants have different molecules and different principles.
1. Polymer coagulants are small molecules, while flocculants are large molecules.
2. The polymer flocculant destroys the hydration film and charge of suspended particles, while the flocculant plays a bridging role.
3. Polymer coagulant agglomerates small molecules into particles of 3 mm in size, while flocculation forms molecular clusters of 10 mm in size.
What will happen if too much flocculant and coagulant are added?
If too much flocculant is added, it will agglomerate.
If the flocculant is added too fast or the flocculant is added unevenly during dissolution, the amount of dry powder added is too large, and the dissolution is not timely, the flocculant will not dissolve and form a lump. If you put it in too fast, it will turn into snot. If you pour it directly into a bucket and add water to melt it, it will become like a plastic block and cannot be used.
The proportioning concentration should not exceed three thousandths, preferably about one thousandth. When preparing, the flocculant should flow down in a linear shape and stir while adding.
What is the difference between anionic flocculants and cationic flocculants?
The difference lies in the charge.
Cationic pam and anionic pam are both polyacrylamide flocculants. Cationic and anionic are two types of polyacrylamide. They are both polymer water treatment flocculants;
Cationic pam is mainly used in industrial solid-liquid separation processes, including sedimentation, clarification, concentration and sludge dehydration. The main industries used are: urban sewage treatment, paper industry, food processing industry, petrochemical industry, metallurgical industry, mineral processing industry , dyeing industry, sugar industry and wastewater treatment in various industries.
Anionic pam is mainly used for flocculation, sedimentation, sedimentation and clarification treatment of various industrial wastewaters, such as steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal washing wastewater and other sewage treatment, sludge dehydration, etc. It can also be used for drinking water clarification and purification treatment. Because its molecular chain contains a certain number of polar groups, it can accelerate particles in suspension by adsorbing solid particles suspended in water, forming bridges between particles, or agglomerating particles to form large flocs through charge neutralization. The sedimentation has a very obvious effect of accelerating solution clarification and promoting filtration.
Xu�What should I do if there are too many chemicals?
Excessive input of flocculant will lead to excessive flocculated alum flowers and troublesome post-processing. Therefore, it is necessary to determine the appropriate input amount before water treatment, so that the operation can be efficient and low-cost.
Adding too much polymer flocculant will cause too many large flocs to be generated in the suspension. This bridge polymer hinders the particles from approaching each other and the discharge of liquid inside the flocs, resulting in redness. The liquid content of the mud is high, which reduces the solid content of the bottom flow of the settling tank.
If you add too much and it doesn’t dissolve well, it won’t have any effect and it won’t flocculate well. It is recommended to do a small test before putting it in to determine the appropriate dosage. </p
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