Water purifying agent

Put chemicals in the water that can react with other impurities in the water

Collection

zero Useful+1

zero

This entry is missing Overview , add relevant content to make the entry more complete, and it can also be upgraded quickly. Hurry up edit Come on!

Water purifying agent is of wide significance polymer Generally, it cannot be directly used as the name of the material. It should be specific to Polyaluminium chloride 、 Polyaluminium ferric chloride 、 Basic aluminum chloride 、 polyacrylamide 、 ferrous sulfate 、 aluminum sulfate 、 Polymeric ferric sulfate They are all chemicals that can react with other impurities in water. Mainly for the purpose of water purification. Common water purifying agents include Polyaluminium chloride 、 Polyaluminium ferric chloride 、 Basic aluminum chloride 、 polyacrylamide 、 ferrous sulfate 、 aluminum sulfate 、 Polymeric ferric sulfate Etc.

Chinese name: Water purifying agent
Foreign name: water purifying agent

Features: Good water purification effect, fast water purification speed, etc
Raw materials: Adsorbable Natural materials
With: Extremely strong purification effect

catalog

Product features

Announce

edit

It has good water purification effect, fast water purification speed, pH weak acidity, inorganic, high safety, and does not produce Secondary pollution , green Environmental protection products 。 Use absorbent Natural materials As raw material, it has strong purification effect and can remove heavy metals from water. handle raw water Not affected by water temperature, PH value The impact of Water transparency Extremely high, recyclable.

classification

Announce

edit

The most commonly used water purifying agent flocculant Flocculants include two categories: inorganic flocculants ， Organic flocculant 。 High price of inorganic flocculant Metal salt , such as aluminum sulfate 、 ferric sulfate 、 Ferric chloride , 4 Titanium chloride and Inorganic acid And alkali. Typical examples are some Concentrator Add lime into the thickener to accelerate the settlement of concentrate, improve the efficiency of thickening and filtering and reduce the loss of metal.

Organic flocculants can be divided into ionic and non-ionic flocculants.

PAC

Announce

edit

Polyaluminium chloride (Polyaluminium Chloride) PAC 。 Also known as Basic aluminum chloride or coagulant Etc. It is between ALCL3 and AL(OH)3 A kind of water-soluble inorganic Polymer ， Chemical Formula Is [AL2 (OH) NCL6-NLm], where m represents the degree of polymerization, and n represents the degree of neutrality of PAC products. The color is yellow or light yellow, dark brown, dark gray resin solid. The product has strong bridging and absorption performance. During the hydrolysis process, coagulation, adsorption and precipitation occur physical chemistry Process.

polymerization Aluminium chloride Materialized property: alias Polyaluminum 、 Polyaluminum , the general formula [Al2 (OH) nCl6-n.XH2O] m or [Al2 (OH) nCl6-n] m, (m ≤ 10; n ≤ 5), is a new type of efficient inorganic polymer flocculant Its aqueous solution is between aluminum trichloride and Aluminium hydroxide Between Hydrolysate , with colloid charge, so it is important to Suspended solids Extremely strong Adsorbability To achieve cohesion Suspended solids in water The purpose of.

Dosage

Add the product (solid) and normal temperature water in a weight ratio of 1:3 while stirring until it is completely dissolved, and then add water to dilute it to the desired concentration. When the turbidity of raw water is 100-500NTUI, the dosage is 3-6mg/L. For specific dosing, small test shall be carried out according to the water quality to select the best dosage and then put into use.

use

1. During use, small test shall be conducted according to the water quality to select the best point with good water purification effect and small dosage. The solution should be prepared and used at any time, and the dosage of non drinking water should be selected according to the actual situation.

2. When using solids, first add water to dissolve and prepare 10-25% solution, and then dilute it with water to the required concentration. When dissolving, first add water to slowly feed and continuously stir.

3. Different manufacturers or brands Water treatment chemicals Cannot be mixed and cannot be mixed with other chemical Mixed storage.

4. Stock solution and Diluent Slightly corrosive, but lower than other kinds inorganic flocculants 。

5. Product Valid storage period : half a year for liquid and two years for solid. Solid products can still be used after moisture.

6. After reasonable dosing, the purified water quality meets Hygienic standard for drinking water 。

Efficacy characteristics

Polyaluminium chloride With removal Suspended solids , COD and BOD 、 Degreasing Decolorization, removal of heavy metals and water Residual chlorine It is mainly used for the purification treatment of tap water and industrial wastewater. Polyaluminium chloride is Purification of water The most widely used inorganic coagulant in the process. There is no need to adjust the PH value of source water. It has a wide range of adaptability to the PH value of source water, which is incomparable to traditional inorganic low molecular coagulants.

matters needing attention

Announce

edit

1. It is better to prepare an aqueous solution of 0.2% concentration with practical neutral salt free water.

2. Because this product is applicable to a wide range of water pH values, the general dosage is 0.1-10ppm (0.1-10mg/L).

3. Fully dissolve. It is required to fully stir the water body before slowly and evenly adding the powder to prevent large flocs and fisheye Blockage of pipes and pumps caused by the phenomenon.

4. The mixing speed is generally 200 rpm, the time is not less than 60 minutes, and the water temperature should be appropriately increased by 20-30 centigrade , which can accelerate the dissolution. Liquid medicine maximum temperature It should be less than 60 degrees.

5. Determine the optimal dosage. Determine the optimal dosage through experiments before use. If the dosage is too low, it will not work. If the dosage is too high, it will react. If it exceeds a certain concentration, PAM Not only does it not flocculate, but it is dispersed and used stably.

6. This product should be stored in a cool, dry place to prevent moisture.

7. The work site should be washed with water frequently to keep it clean. Due to its high viscosity, PAM scattered underground has a smooth surface when encountering water to prevent operators from sliding and causing safety accidents.

8. The product is lined with plastic bags and the outer layer is made of plastic Compound membrane Woven bag 25Kg per bag. main Environmental water purifying agent

Add the agent that can react with other impurities in the water.

Cationic polyacrylamide Precautions:

1. Size of floc: too small floc will affect the drainage speed, too large floc will restrict more water and reduce the floc Mud biscuit Degrees. Selected polyacrylamide Its molecular weight can adjust the size of floc.

2. Sludge characteristics. The first point is to understand the source, characteristics, composition and proportion of sludge. According to different properties, sludge can be divided into organic and Inorganic sludge Two. Cationic polyacrylamide for disposal Organic sludge , relative Anionic polyacrylamide flocculant For inorganic sludge, cationic polyacrylamide shall be used when the alkalinity is very strong, while anionic polyacrylamide shall not be used when the acidity is very strong, Solid content When the sludge is high, the amount of polyacrylamide is usually high.

3. Flocculation strength: Flocculation shall be stable without breaking under shear. Improving the molecular weight of polyacrylamide or selecting suitable molecular structure will help to improve the stability of flocs.

4. Polyacrylamide Ionicity : For dewatered sludge, flocculants with different ionic degrees can be selected after a small test to select the best suitable polyacrylamide, so that the best flocculant effect can be obtained, and the dosage can be minimized to save costs.

5. Polyacrylamide dissolution: good dissolution can give full play to talents Flocculation 。 Sometimes it is necessary to accelerate the dissolution rate. At this time, we can think about improving the concentration of polyacrylamide solution.

Purpose

Announce

edit

It is used in metallurgy, electric power, tanning, medicine, printing and dyeing, paper making, chemical industry and other sewage treatment industries. Its coagulation effect forms flocs (also known as Alum flower ）Fast, large and heavy particles, fast sedimentation. The applicable PH value ranges from 5 to 9, which is characterized by low consumption, low cost, high activity, convenient operation, wide adaptability and low corrosivity.

performance

Announce

edit

1. High hydrolysis speed, Hydration Weak. Formed Alum flower Dense, fast settling speed. It is less affected by water temperature change and can meet the requirements of Shear force Requirements.

2. The solid product is brownish and reddish brown powder, which is very soluble in water.

3、 Polyaluminium ferric chloride It can effectively remove Aluminium ion as well as Aluminium salt Residual in water after coagulation Free state Aluminium ion.

4. Wide range of application, domestic drinking water, Industrial water , domestic water, domestic sewage and Industrial sewage treatment Etc.

5. The dosage is small, the treatment effect is good, and the cost is 10-20% less than other coagulants.

6. The use method, packaging purpose and precautions of polyaluminium ferric chloride are the same as Polyaluminium chloride Basically the same.

Technical indicators

Index name Liquid solid

relative density （20℃） 1.25

PH value (1% water solubility) 4 0-5 .0 4.0-5.0

alumina (Al2O3) content% ≥ 8-10 ≥ 29

ferric oxide Content% 1-2 3-5

Basicity% 65-90 65-92

Water repellent content mg/L ≤ 0.3 1.0

arsenic (As) content mg/L ≤ 0.0001 0.0003

Manganese (Mn) content mg/L ≤ 0.0025 0.0075

lead (Pb) content mg/L ≤ 0.001 0.003

mercury (Hg) content mg/L ≤ 0.00001 0.00002

Sulfate radical (SO4) content mg/L ≤ 2.5 9.0

PAM

Announce

edit

polyacrylamide Classification Polyacrylamide product introduction: Polyacrylamide (PAM) is water-soluble Polymer , insoluble in most Organic solvent It has good flocculation and can reduce the friction resistance between liquids. It can be divided into non-ionic anion 、 cation And hermaphrodite.

Use Properties

Announce

edit

1、 flocculation Sex: PAM Enable Suspended matter Bridging by electric neutralization Adsorption , starting Flocculation 。

2. Adhesion: It can play the role of adhesion through mechanical, physical and chemical actions.

3. Resistance reduction: PAM can effectively reduce the Frictional resistance The resistance can be reduced by 50-80% by adding a small amount of PAM to the water.

4. Thickening property : PAM has thickening effect under neutral and acid conditions, when PH value PAM above 10 is easy to hydrolyze. In half Reticular structure Thickening will be more obvious.

Principle of action

Announce

edit

（1） Flocculation Principle: When PAM is used for flocculation Floc Type surface properties, especially Electrokinetic potential , viscosity, turbidity and Suspension Is related to the pH value of the particle, and the dynamic potential of the particle surface is the reason for the particle polymerization inhibition surface charge On the contrary, PAM can reduce the dynamic potential and condense.

（2） Adsorption bridging PAM molecular chain is fixed on the surface of different particles, and polymer bridge is formed between particles to form particles Aggregate And settlement.

（3） Surface adsorption : PAM molecular Polar group Various adsorption of particles.

（4） Enhancement : PAM molecular chain and dispersed phase Through a variety of mechanical, physical, chemical and other effects, the dispersed phase is connected together to form a network

Principles of use

Announce

edit

The use of polyacrylamide shall follow the following principles:

1、 Granular Polyacrylamide flocculant It cannot be directly added into the sewage. It must be dissolved in water before use to treat sewage with its aqueous solution.

2. The water for dissolving granular polymers should be clean (such as tap water), not sewage. Normal temperature water is enough, and heating is generally not required. The solution is slow when the water temperature is lower than 5 ℃. The increase of water temperature will accelerate the dissolution rate, but the polymer degradation will be accelerated when the temperature is above 40 ℃, which will affect the use effect. General tap water is suitable for preparation Polymer solution 。 strong acid , strong alkali and high salt water are not suitable for preparation.

3. Polymer solution concentration 0.1% - 0.3% is recommended, that is, 0.1 g - 0.3 g polymer powder is added to 1 liter of water.

aluminum sulfate

Announce

edit

Product Introduction

White lustrous crystals, granules or powders. It tastes sweet. Stable in air. Loss at 86.5 ℃ Crystal water At 250 ℃, all crystal water is lost. When heated, it expands violently and becomes spongy. It decomposes into Sulfur trioxide And alumina. When relative humidity It is weathered when it is about 25% lower. Easily soluble in water, almost insoluble in ethanol The solution is acidic. Insoluble after long boiling Basic salt Sedimentation. The relative density is 1.62. aluminum sulfate It is a widely used industrial reagent, usually associated with alum (i.e. aluminum potassium sulfate dodecahydrate). Aluminum sulfate usually Be treated as flocculant , used to purify drinking water and Sewage treatment equipment It is also used for paper industry 。

advantage

I Product characteristics

And others inorganic flocculants Compared with, it has the following characteristics:

1. New, high-quality and efficient iron salt Inorganic polymer flocculant;

2. Excellent coagulation performance, Alum flower Dense, fast settling speed;

3. Good water purification effect, good water quality, no aluminum, chlorine, heavy metal ions, etc Hazardous substances , nor Iron ion Water phase transfer , non-toxic, harmless, safe and reliable.

4. It can remove turbidity, color, oil, dehydration, bacteria, odor, algae, COD, BOD and heavy metal ions in water.

5. The pH value range of the water body is 4-11, and the optimal pH value range is 6-9. The pH value of the purified raw water is Total alkalinity Change range Small, less corrosive to treatment equipment;

6. Yes Micro pollution , including algae The purification treatment effect of low temperature and low turbidity raw water is remarkable, especially for high turbidity raw water.

7. The dosage is small, the cost is low, and the treatment cost can be saved by 20% - 50%.

chemical property

Extremely soluble in water, aluminum sulfate cannot be dissolved in pure sulfuric acid (only coexist), but is dissolved in water together with sulfuric acid in sulfuric acid solution, so aluminum sulfate In sulfuric acid solubility Is the solubility of aluminum sulfate in water. 18 molecules precipitated at room temperature Crystal water It is aluminum sulfate 18 water, and aluminum sulfate 18 water is mostly produced in industry. It contains 51.3% anhydrous aluminum sulfate, and will not dissolve itself even at 100 ℃ (dissolved in its own crystal water).

It is not easy to lose crystal water due to weathering. It is relatively stable and will water loss , high temperature will decompose into alumina Sulfurous oxide 。 Heat to 770 ℃ and start to decompose into alumina Sulfur trioxide 、 sulfur dioxide and steam 。 Soluble in water, acid and alkali, insoluble in ethanol. The aqueous solution is acidic. Generated after hydrolysis Aluminium hydroxide 。 Aqueous solution can be generated by boiling for a long time Basic aluminum sulfate 。 Industrial products are gray white flake, granular or massive, with light green color due to low iron salt content, and low price ferric salt It is oxidized to make the surface yellow. The crude product is grayish white Fine-grained structure Porous. Non toxic, dust can irritate eyes.

Application

paper industry As Rosin gum 、 Wax emulsion Isocratic Precipitant , working in water treatment flocculant , can also be used as Foam extinguisher Internal retention agent of, manufacturing industry aluminum sulfate Raw materials of alum and aluminum white, petroleum decolorization Deodorant , raw materials of some drugs, etc. Can also be manufactured Artificial gem And advanced Ammonium alum 。 Products with arsenic content no more than 5mg/kg can be used for Water-treatmemt Flocculants 。

1. Used as paper in the paper industry Sizing agent

2. To enhance the water resistance and anti-seepage performance of the paper; Soluble in water can make fine particles and natural colloidal particles in water condense into large flocs, which can be removed from water, so it is used for water supply and waste water coagulant ；

3. Used as turbid water Purifying agent , also used as precipitant Fixing agent 、 Filler Etc. Used as antiperspirant in cosmetics Cosmetic raw materials （ Astringent ）；

4. In the fire protection industry baking soda 、 foaming agent form Foam extinguishing agent ；

5、 Analytical reagent ， Mordant , tanning agent, oil decolorizing agent, Wood preservative ；

6、 albumin Pasteurization Of stabilizer (including liquid or frozen whole egg, egg white or yolk);

7. Can be used as raw material for manufacturing Artificial gem And Advanced Ammonium alum , Other aluminate ；

8、 Fuel industry In production Chrome yellow and Lake dye Temporally Precipitant At the same time Solid color And filler.

Promotion of water purification agent

Water purifying agent can improve water quality and bring great benefits to people's life and health. However, the water purifying agent should also be equipped Water purification filter material 。

Water purification filter material, including Fibrosphere 、 Fruit shell filter material , selected anthracite filter material, refined quartz sand filter material, magnetite filter material Manganese sand filter material 、 limestone Filter material Ceramsite filter material , pebble zeolite 、 Garnet 、 Maifan stone 、 Emery 、 Rare earth porcelain sand 、 Activated alumina ， Coconut shell activated carbon 、 Activated Carbon 、 Wood powder activated carbon 、 Coal quality Columnar activated carbon Coal based granular carbon.

Novice on the road

Growth task Getting Started with Editing Edit Rule Edit by myself

I have questions

Content query Online Service Official post bar Feedback

Complaints and suggestions

Report bad information Failed to appeal through entries Complaint of infringement information Blocking query and unblocking

Jinggong Network Anbei No. 1100000200001