The polyelectrolyte injection package is a set of equipment that is used to complete the coagulation and coagulation process by injecting polyelectrolyte powder. These packages are a subset of chemical injection packages that are used to inject a wide range of chemicals, including anti-fouling agents, coagulants and coagulants, anti-corrosion agents, acid and alkali, and finally disinfectants such as chlorine.
The polyelectrolyte injection package is a set of equipment that is used to complete the coagulation and coagulation process by injecting polyelectrolyte powder. These packages are a subset of the chemical injection package , which are used to inject a wide range of chemicals, including anti-fouling agents, coagulants and coagulants, anti-corrosion agents, acid and alkali, and finally disinfectants such as chlorine.
Suspended impurities and colloids in water change the color, smell and taste of water. These impurities cannot be removed by the smoothing process alone and thus require a separate coagulant. Polyelectrolyte is one of the flocculation methods, which is used to create larger and heavier clots with polymer and electrolyte properties. One of the advantages of using polyelectrolyte in these methods is that this material can be transported in powder form.
How the polyelectrolyte injection package works
After adding the polyelectrolyte powder in the special chamber of the device, the powder enters the solution preparation tank. In this tank, polyelectrolyte powder is mixed with water to prepare the required percentage for injection. This solution will be stirred in the mixer with the appropriate speed so that the ingredients are completely mixed and uniform and a homogeneous solution is obtained. The homogeneous solution is injected into the target fluid by the injection pump (dosing pump).
Advantages of the polyelectrolyte injection package
The polyelectrolyte in the fluid clumps the suspended particles and sticks them together. This action increases the density of particles and leads to their settling. Flocculant (polyelectrolyte or polyacrylamide), like a catalyst, speeds up the process of separating solid particles from liquid and facilitates the wastewater treatment process. The polyelectrolyte injection package has a much higher efficiency than other methods of flocculation of solids and suspended in water, and for this reason, it is used in various industries. Ease of use and operator, precise design and high efficiency are considered advantages of the polyelectrolyte injection package . The use of polyelectrolyte produces thicker sludge with a smaller volume. In addition, this polymer does not increase the TDS of water and does not require pH adjusting substances.
Polyelectrolyte also kills some microorganisms. In addition, the use of this material reduces the use of other coagulants such as aluminum chloride and reduces the costs of consumables in refineries. Another advantage of the polyelectrolyte injection device is its ability to be adjusted based on different operating conditions and high flexibility to achieve the desired output quality. The raw materials and equipment needed for this package are easily accessible. The use of this package does not require the presence of specialists and its maintenance can be done at a reasonable cost. It is very easy to install the device and the size of this package allows consumers to move the device easily.
Uses of polyelectrolyte injection package
The polyelectrolyte injection package is used in the raw water purification process to produce drinking water. In addition, this package is used to remove solid particles and organic compounds in cooling towers and ventilation systems. In the steel industry, this package is used to remove oil and colloidal oxides in the return water from rolling. Similarly, in the petrochemical industry, this package is used to remove paint and colloids and simultaneously separates light particles of fat and oil and heavy particles.
Another application of the polyelectrolyte package is to increase the water absorption coefficient in agricultural industries. Coagulation of suspended solids and colloids in sugar and liquid concentration processes is done with this package. This package is used in the production process of edible crystal salts as well as in the production process of paper and unolite sheets. In general, the main use of this device is in the treatment of sewage and sanitary and industrial effluents. The injection site of polyelectrolyte solution can be open ponds, pipelines, tanks, chemical reactors or other tankers.
Design and manufacture of polyelectrolyte injection device
These packages are designed and made based on their usage. Polyelectrolyte package in general, including a powder feeding chamber (feeder tank), powder injection system, liquid polyelectrolyte injection system, mixing tank, dilution tank, final tank, dosing pump, piping, safety valve, back pressure valve, suction one-way valve , injection valve, chassis and computer or PLC. These equipments provide the possibility of working with powder and liquid polyelectrolyte.
The maximum capacity of this polyelectrolyte injection package is available in a ready-made capacity of 8000 I/h, but it can be provided in higher capacities as well. Tanks are the most important equipment of these packages as storage of chemicals. The structure and size of these tanks are different, but they are usually horizontal and cylindrical. Tanks have flat or conical bottoms.
The material of the powder tank, preparation and storage tanks, due to the corrosive properties of polyelectrolyte, are usually made of stainless steel. Other essential aspects of this package are pumps. Pumps provide the required pressure generation source. These devices are available in two types of diaphragm or plunger and have electric motor, air motor, solar electric motor or drive motor. By using these pumps, the injection operation is done without worrying about clogging the suction line. The taps and valves in this package control the liquid level inside the tank; provide flow rate calibration; They control the pressure inside the system; and set alarms for greater safety and proper operation.
The sizes of the valves are different according to the different functions of the package. The electrical system with a navigation control panel in this package facilitates the use and control of functions. Each package also has a chassis that protects the entire structure while maintaining different parts of the system. The chassis is a steel structure and has a drip pan for collecting chemicals.
Usually, the package body is made of stainless steel 304 or stainless steel 316. Carbon steel or epoxy coating may also be used for the body based on the consumer’s request in order to reduce costs in preparing this package. In general, this package is structurally light and occupies a small space. Polyelectrolyte packages are designed in manual, semi-automatic and fully automatic types.
Polyelectrolyte packages are divided into three types: anionic, cationic and uncharged. In the anionic type, after dissolving in water, the polyelectrolyte produces a negatively charged solution that sticks to the cationic particles dissolved in water and causes them to coagulate. After dissolving in water, the cationic pack produces a positively charged solution that is attracted to anionic particles and coagulates them. No-load type This package produces no-load property after solving.
The cation or anion attached to the chemical body of the polyelectrolyte determines the type of active charge of the polymer. Based on this, polymers are divided into positive charges, negative charges and no charges. Molecular weight and charge intensity of polyelectrolyte also affect the activity of this material. In order to separate water and sludge, cationic flocculant coagulants are used to settle colloidal particles suspended in water that do not settle automatically.
Sedimentation process using polyelectrolyte package
Due to having electric charge, the fine particles of sewage and sewage constantly repel each other and remain in motion. In order to condense and settle these particles, their electric charge must be neutralized. This process is done with flocculant chemicals. Flocculant neutralizes the charge of ionic and charged particles and produces uncharged particles that are attracted to each other, condensed and bulky due to the creation of van der Waals force. A mass of dense and bulky particles is called floc.
After the particles settle, a clear liquid and a thickened pulp are produced. The sedimentation speed of particles can be calculated using Newton’s or Stokes laws according to the dimensions of the particles. Particles as small as microns settle at a very low speed. Therefore, it is necessary to accelerate the fall of particles by using centrifugal force. In addition, if we adjust the environmental conditions in a certain way, the particles will stick together faster under the influence of van der waals force. Meanwhile, the use of polymers to speed up this process is very effective. The use of flocculant polymers in this process is called flocculation.
Prominent Polymer preparationپمپ های آب و فاضلاب حجابTo determine the type and amount of coagulant in the polyelectrolyte injection package, test jar test and other similar tests are required. After the settling process, it may be necessary to use thickening, one of the most common methods of leaching material in ore dressing. The capacity of this method is very high and it is affordable. The sedimentation process takes place in ponds called Thickner. As a result of this process, a layer of clear water is formed in the upper part of the thickener. In most cases, the concentration of pulp inside the thickener is high and the sedimentation of the particles is carried out in the condition of falling with a barrier. The bottom thickened liquid in the thickener is directed out through a bottom outlet.
The price of the polyelectrolyte injection package
The price of the polyelectrolyte injection package is varied according to various cases. Requested automation levels, type of tanks, chassis and mixer package, flow rate and pressure of injected polyelectrolyte, volume of tanks for preparation and preparation of solution, and finally the brand of equipment affects the pricing of polyelectrolyte injection device.
Polyelectrolyte Preperation Package automatic
The polyelectrolyte injection package is used for coagulation and flocculation of sludge produced in treatment plants. For example, the polyelectrolyte injection package of Sazeh water production group can be used as a widely used product next to the filter press to coagulate and condense the sewage sludge. Ab Sazeh Company is the largest manufacturer of cationic and anionic polyelectrolyte. The polyelectrolyte injection device is one of the side products in the industrial and sanitary treatment plant. The polyelectrolyte injection package is an independent specialized product that can be designed and produced in the water structure workshop.
Design and manufacture of polyelectrolyte package
The produced samples of the water polyelectrolyte injection package are in operation and can be visited in different cities of the country, especially in Kerman and in the copper industry. All stages of polyelectrolyte injection package design can be implemented and produced in separate process and physical sections. At each stage, various brands available in the market such as Western European or similar brands can be used to produce the polyelectrolyte injection package.
Ab Sazeh, as one of the largest specialized producers in the water and wastewater industry, has the ability to design polyelectrolyte packages in accordance with the technical conditions and technical conditions of the project, and subsequently, the ability to manufacture various types of polyelectrolyte injection packages in accordance with the approved design. Since this product is a completely specialized product, its production and design should be done professionally under the supervision of mechanical and process engineers in the field of sludge treatment and wastewater treatment. Due to the high experience of Ab Sazeh’s specialized group in this field, it can be placed as a consultant and producer at every stage next to respected employers and business and industry owners. To get a free consultation, contact the experts of the Sazeh water specialist team
Applications of polyelectrolyte injection device
Undoubtedly, the polyelectrolyte injection package is one of the widely used equipments in water and wastewater treatment. In short, coagulation and flocculation processes are used to remove suspended impurities and colloidal particles in water and wastewater. The flocculation process requires the addition of coagulant polymers and coagulant aids to neutralize the load of suspended and colloidal particles and form larger and heavier clots.
The package of polyelectrolyte injection of Ab Saze company in the process of coagulation and flocculation of suspended solid particles and colloidal particles due to the preparation of polyelectrolyte solution in the shortest possible time and also the injection of polyelectrolyte solution in the required amount according to the type and amount of pollutants in Water and sewage are used. Ab Sazeh Technical and Engineering Company has included the design and production of polyelectrolyte injection packages by professional and experienced engineers in accordance with international standards. In the following, we will explain the properties of polyelectrolyte and the components of the polyelectrolyte injection package.
flocculant in the polyelectrolyte injection package (coagulation and coagulation)
Flocculant or coagulant is considered as one of the important operational and process units in water treatment and sanitary and industrial wastewater. In the process of coagulation and flocculation, by using materials called polyelectrolyte coagulants (polymer complexants), the separation efficiency of colloidal particles in suspension solutions can be increased by increasing the size, density and load of the absorbent particles.
In order to use polyelectrolyte coagulant in the process of coagulation and flocculation in water and wastewater treatment systems of various industries, the injection package of polyelectrolyte solution is used. The polyelectrolyte injection package is used to prepare and inject polyelectrolyte solution into water and wastewater pretreatment and treatment systems and in various industries such as oil, gas, petrochemical, refinery, power plant, and water and wastewater.
After injecting the polyelectrolyte solution and combining polyacrylamide with water or wastewater, the active amide groups of the polymer chain are placed on the surface of suspended materials or the surface of colloidal particles and by neutralizing the charge of suspended and colloidal particles and reducing the zeta potential (the main factor of repulsion) between the particles) and creating conditions for the Vandalism force to act, causing the particles to stick to each other, which first form small clots and then larger flocs.
The main parts of the polyelectrolyte injection package
Ab Sazeh’s polyelectrolyte injection package usually consists of four main parts as follows:
- Polyelectrolyte addition tank (Feeder)
- Tanks required for mixing polyelectrolyte with mixers
- The tank needed to store and inject the prepared polyelectrolyte solution
- Polyelectrolyte injection pumps (diaphragm pump or pneumatic pump, dosing pumps are common pumps for injecting polyelectrolyte solution in this system)
- Electrical panel and PLC (for automation and control of polyelectrolyte injection package)
Applications of polyelectrolyte injection package of Ab Sazeh Company
- Addition of coagulant in raw water clarification process for drinking and industrial water production
- Coagulation of suspended solids and colloidal particles in water purification processes and sugar processes and liquid concentration
- Removal of suspended substances in industrial and sanitary wastewater treatment systems
- Inlet water purification in ventilation, cooling and heating systems
- Separation of solids, colloidal particles, oil and grease and insoluble oxides in steel industry effluents
- Removal of color, suspended solids and colloids in the wastewater treatment process of refineries and petrochemical industries
What is polyelectrolyte?
Polyelectrolyte are high molecular weight polymer compounds based on polyacrylamide, soluble in water. These materials are used as coagulants to increase the settling speed of suspended solids and colloidal particles and color removal in the processes of purification and production of liquids. Polyelectrolytes are used as coagulants and coagulants in water and wastewater treatment.
Types of polyelectrolytes and their properties
- Cationic polyelectrolyte
- Anionic polyelectrolyte
Among the properties of polyelectrolytes, the following can be mentioned:
- Converting small clots into large and heavy clots
- Increasing the speed of sedimentation and reducing the volume of sludge formed
- Reducing the amount of coagulant consumption by optimally expanding the pH range
Difference between cationic and anionic polyelectrolyte
The cation or anion attached to the chemical structure of polyacrylamide determines the type of active charge of the polymer. These materials are divided into three types, positive charge (cationic), negative charge (anionic) and based on their ionized type in water. They are divided without charge (non-ionic).
Why should we use polyelectrolyte coagulants for water purification?
As you know, common water purification processes include dirt collection, coagulation, flocculation, sedimentation, clarification and disinfection. One of the first steps in a water treatment process is the addition of chemicals to help remove suspended and colloidal particles from the water.
Polyelectrolyte coagulants are linear or branched organic polymers that form complex ions in solution. Polyelectrolytes have medium molecular weight and are completely soluble in water. These materials are classified into four groups: cationic, anionic, non-ionic and natural polymers.
Polyelectrolyte coagulants are produced in different forms such as dry powder, granules, aqueous solutions, aqueous gels, hydrocarbon emulsions, and they are used in various industries such as water and sewage, sugar, mineral processing, petroleum, papermaking, textile, pharmaceutical, It is used for hygiene and… Among the most important countries producing polyelectrolyte coagulants in the world are America, Japan, France, England, Finland, Germany, China and Korea.