2022年8月14日星期日

Application as well as technical method of PAM in wastewater therapy procedure

 Industrial wastewater therapy: for put on hold fragments, reasonably high concentration, particles with positive cost, PH worth of water neutral or alkaline sewage, iron and also steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal cleaning wastewater and other sewage treatment, the best effect. Consuming alcohol water treatment: The water resource of many water supply in China comes from rivers, with high sediment and mineral web content as well as turbidity. Although filteringed system by rainfall, it still can not fulfill the needs. Flocculant requires to be added, as well as the dose is 1/50 of not natural flocculant, but the impact is numerous times that of not natural flocculant. For major natural pollution of river water can be utilized not natural flocculant and my business's cationic polyacrylamide with much better result. Starch factory and a loss of alcohol plant starch grains recycling: currently a great deal of a lot of drainage containing starch factory, now adding the anionic polyacrylamide, the starch fragments flocculation rainfall, and after that to travel through the filter press filter sediment into the pie, as feed, alcohol plant additionally can be used anionic polyacrylamide dehydration of alcohol, filter for recycling. Used for mud settlement in river water. Used as dry stamina agent in paper making.


Application and technical approach of PAM in wastewater treatment procedure


Chemical precipitation

Zinc is a type of amphoteric element, its hydroxide is insoluble in water, and has weak alkalinity as well as weak level of acidity, so its chemical formula can be composed as: fundamental: Zn( OH) 2, acid: H2ZnO2.

Coagulation rainfall method


The principle of coagulation precipitation method is to add coagulant (lime, ferric salt, light weight aluminum salt) right into the wastewater including zinc, as well as kind hydroxide flocculant under the weakly alkaline condition of pH= 8 ~ 10, which has flocculation result on zinc ion and also co-precipitation precipitation.

Sulfide rainfall procedure


Sulfide precipitation approach capitalizes on the solid fondness in between Na2S and also S2+ in MgS and also heavy metal ions under weak alkaline problems to produce sulfide rainfall with tiny positive solubility and also remove it from the remedy.

Ferrite method

Ferrite is an oxide solid solution composed of iron ions as well as various other metal ions, a procedure initially established by NEC.

Electrolytic procedure

Electrolysis approach is to utilize the electrochemical buildings of steel, under the activity of straight current, zinc (II) substances are dissociated right into steel ions at the anode, lowered into steel at the cathode, and also remove the zinc ions in the waste water. This technique is an efficient approach to treat wastewater consisting of high concentration of zinc, with high therapy performance and also simple to recycle. However the drawback of this approach is that the focus of zinc ions in the water can not be lowered really low. Therefore, electrolysis approach is not ideal for dealing with zinc having wastewater with low concentration, and this approach has high power usage as well as high investment expense.

Ion exchange approach


The ion exchange method is executed in an ion exchanger with the help of an ion exchanger. 7 adsorption approach adsorption approach is the application of permeable adsorption material adsorption treatment of zinc including wastewater an approach, the traditional adsorbent is activated carbon. Recommended option of Baike brand coal sewer therapy triggered carbon.

Use of polyacrylamide PAM and issues needing focus


1. Figure out the very best model as well as the very best dose of the item via small examination.

2, the item is prepared right into 0.1% (strong material) concentration of liquid option, neutral water without salt is appropriate.

3. When dissolving water, uniformly sprinkle the product into stirred water and also rise temperature suitably (< 60 ℃) to speed up right into option.

4, solid products are crammed in polypropylene woven bags, lined with plastic bags, each bag 25kg, plastic body packed in plastic barrels, lined with plastic bags, each 50kg or 200kg.

5, this item has hygroscopic, need to be secured in a great as well as completely dry location, the temperature level ought to be below 35 ℃.

6, solid items to prevent sprinkle on the ground, in order to prevent the item moisture after slippery.

7, prep work of PAM aqueous service, ought to be performed in enamel, galvanized, aluminum or plastic pail, not in iron container preparation and also storage space.

8. When liquifying, focus ought to be paid to adding the item evenly as well as slowly right into the dissolver with mixing and also heating up actions. Loan consolidation needs to be prevented. Advised agitator 60-200 RPM/ min, otherwise it will certainly bring about polymer deterioration, impact the use effect.

9, PAM aqueous remedy must be used now, when the remedy is put for a long period of time, its efficiency will progressively minimize depending on the water high quality.

10, after adding flocculant liquid service to the suspension, if mixed for a very long time as well as intensely, it will certainly damage the anionic polyacrylamide (APAM) that has been developed. Anionic polyacrylamide (APAM) is white powder in appearance, with molecular weight from 6 million to 25 million water solubility, can be liquified in any proportion in water as well as insoluble in natural solvents. The effective PH array is 7 to 14. It is very polymer electrolyte in neutral alkaline media and is sensitive to salty electrolytes as well as can cross-link with costly metal ions to develop insoluble colloids.

Anionic polyacrylamide (APAM) item attributes


1) flocculation: PAM can make suspended compounds via electric neutralization, connecting adsorption, flocculation.

2) bonding: with mechanical, physical as well as chemical results, the bonding effect.

3) resistance decrease: PAM can successfully minimize the frictional resistance of liquid, adding trace PAM in water can reduce the resistance by 50-80%.

4) enlarging: PAM has thickening effect under neutral and acidic problems. When PH worth is above 10, PAM is simple to hydrolysis as well as offers a semi-reticular framework, the thickening will certainly be much more noticeable.

Anionic polyacrylamide (APAM) is generally utilized


Industrial wastewater treatment: for suspended particles, fairly high concentration, particles with positive cost, PH worth of water neutral or alkaline sewage, iron as well as steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal cleaning wastewater and various other sewer therapy, the most effective result. Consuming alcohol water therapy: The water resource of many water supply in China comes from rivers, with high debris as well as mineral material and also turbidity. Although filtered by rainfall, it still can not satisfy the requirements. Flocculant requires to be added, as well as the dosage is 1/50 of inorganic flocculant, however the impact is numerous times that of not natural flocculant. For major organic contamination of river water can be used not natural flocculant and also my company's cationic polyacrylamide with better result. Starch manufacturing facility and also a loss of alcohol plant starch grains reusing: currently a great deal of a great deal of waste water having starch manufacturing facility, currently including the anionic polyacrylamide, the starch particles flocculation rainfall, and afterwards to travel through the filter press filter debris right into the pie, as feed, alcohol plant also can be utilized anionic polyacrylamide dehydration of alcohol, filter for recycling. Used for mud settlement in river water. Made use of as completely dry toughness agent in paper making.

Made use of for papermaking accessories and price help. Including trace AMOUNT of PAM-ASG-3 anionic polyacrylamide into the pump tank prior to paper production can raise the retention of water filler and also fine fiber on the internet by 20-30%. Each heap can save pulp 20-30kg.

2022年4月19日星期二

What is SPCC Steel? What is the production process?

 SPCC steel is a commercial high quality cold rolled steel in Japanese standard JIS G 3141.

"S" means steel, "P" means plate, "C" means cold rolled, the second "C" means commercial use.
​As a basic carbon steel, SPCC can be classified as a mild steel, equivlent to Chinese steel grade Q195 and US steel grade SAE1006.


What is SPCC Steel? What is the production process?

Cold Rolled Steel Coils

SPCC steel is a commercial high quality cold rolled steel in Japanese standard JIS G 3141. 

"S" means steel, "P" means plate, "C" means cold rolled, the second "C" means commercial use. 

As a basic carbon steel, SPCC can be classified as a mild steel, equivlent to Chinese steel grade Q195 and US steel grade SAE1006.


What is SPCC-SD / SB?

S=Standard Temper Grade

D=Dull Finish 

B=Bright Finish


JIS G3141ASTMBS1449DIN 1623Remark
SPCCA366CR4ST12Commercial quality
SPCDA619CR3ST13Drawing quanlity
SPCEA620CR2ST14Deep drawing quality
SPCF


Deep drawing non aging
SPCG
CR5
Extra deep drawing

Chemical Composition of SPCC

Maximum percentage of Carbon (C): 0.15%.

Maximum percentage of Manganese (Mn): 0.60%.

Maximum percentage of Phosphorous (P): 0.10%.

Maximum percentage of Sulphur (S): 0.05%.


Chemical Composition of JIS G3141 Steel and SPCC

GradeChemical Composition %
C
Max
Mn
Max
P
Max
S
Max
SPCC0.15 0.60 0.10 0.05 
SPCD0.12 0.50 0.04 0.04 
SPCE0.10 0.45 0.03 0.03 
SPCF0.08 0.45 0.03 0.03 
SPCG0.02 0.25 0.02 0.02 



2022年2月17日星期四

How to heat treat stainless steel pipe fittings?

 Heat treatment of stainless steel pipe fittings. The heat treatment of stainless steel pipe fittings is to change its physical properties, mechanical properties, residual stress and restore the corrosion resistance affected by previous processing, so as to obtain the good performance of stainless steel or enable stainless steel to withstand further high and low temperature processing. The so-called heat treatment is the corresponding annealing, quenching, tempering, normalizing and other related treatments for different structures and types of stainless steel.

According to the structure, stainless steel can be divided into austenitic stainless steel, martensitic stainless steel and ferritic stainless steel. In order to avoid surface deformation of stainless steel during heat treatment, the heat treatment of these three types of stainless steel is different based on their respective structures and characteristics.

Meiya stainless steel pipe fittings - heat treatment

1. Heat treatment of austenitic stainless steel pipe fittings

Austenitic stainless steel is widely used and widely used. It is characterized by austenite structure without phase transformation at room temperature, which can not be hardened by heat treatment, but can be hardened by cold work. The common heat treatment method is solid solution treatment.

2. Heat treatment of ferritic stainless steel pipe fittings

Ferritic stainless steel fittings usually do not have ν-α Phase transformation is a ferrite structure without phase transformation at high temperature and normal temperature. However, when the steel contains a certain amount of austenite forming elements such as carbon and nitrogen, austenite structure will also be formed at high temperature. This steel cannot be strengthened by heat treatment, but can only be annealed to eliminate internal stress and promote further surface treatment.

3. Heat treatment of martensitic stainless steel pipe fittings

Martensitic stainless steel pipe fittings have obvious transformation point, which is austenitic structure at high temperature, and martensitic transformation occurs when cooling, so as to transform into martensitic structure and harden. Since this type of stainless steel contains high chromium and has good hardenability, a variety of heat treatment methods, such as quenching and tempering, can be used.

More Details: https://www.hdtsteel.com 

2021年12月13日星期一

2022 hair trends

 2021 is coming to an end, and 2022 will also come quietly. We make predictions based on the prevalence in 2021. The hair trend will become obvious in 2022.

1)2022 hairstyles for long hair trends

Styling your locks may turn into a struggle sometimes, but that’s where our easy hairstyles for long hair come in handy. It’s highly recommended to master this style.

 

Now, scroll further to see the gallery with amazing easy hairstyles for long hair to do at home and start practicing right away.

 

1. Trendy Bow Hairdo. It takes a bit of practice, but in the end, it will totally wow everyone. 


2. Fast and Simple Low Bun. It’s as easy as just creating a pulled halfway through low pony and then knotting the rest of the hair around the tie.





3. Easy Formal Updo. Some of today’s updos don’t look like simple hairstyles for long hair, but they are. To feel glam, but casual, go for a loose upbraid updo.

 

 

 

 

2) fall hair trends 2022 color

it's time to start your search for the best fall hair colors. Like the rest of the world, hair color is in a bit of a weird place this fall. As the weather gets chillier, hair is about to get a lot warmer, and be prepared for red to be the shade of the season). At-home experimentation is going strong, as are throwback trends like chunky highlights and e-girl stripes. And, of course, there's the usual crop of drink-inspired shades to quench your thirst. We asked top hairstylists for the coolest fall hair trends to try—covering the span of everything from pink and gray to stunning variations on blond, brunette, black, and red.


 

3) 2022 hairstyles male trends

There’s no better time than the new year to embrace a new look. Continuing from last year’s exploration of bolder cuts and styles, this year is offering up some of the best men’s looks we’ve seen in a while. From short fades and undercuts to mid-length comb-overs and quiffs and even long man buns and braids, this year has a stylish option to suit every hair length and type. Here are the most popular men’s haircuts that every man should try.


 

2021年11月21日星期日

What is the difference for Cationic, anionic, non - ionic polyacrylamide in applications?

 Polyacrylamide (PAM) is a linear water-soluble polymer, which is the most widely used water-soluble polymer compound.

One of the varieties, PAM and its derivatives can be used as a highly effective flocculant, thickener, paper intensifier and liquid resistance reductionAgent, widely used in water treatment, paper making, petroleum, coal, mining and metallurgy, geology, textile, construction and other industrial sectors.

Different uses:

Non-ionic polyacrylamide uses:

Sewage treatment agent: non-ionic polyacrylamide is more suitable as flocculant when the suspended sewage is acidic. This is PAM adsorption bridge role, so that the suspended particles flocculation precipitation, to achieve the purpose of sewage purification. Can also be used for the purification of tap water, especially with the use of inorganic flocculant, the best effect in water treatment.

Textile industry auxiliaries: add some chemicals can be made into chemical data, used for textile sizing.

Sand control and sand fixation: non-ionic polyacrylamide dissolved into 0.3% concentration to add crosslinking agent, spray on the desert can play a role in sand control and sand fixation.

Soil humectant: used as soil humectant and various modified polyacrylamide basic raw materials.

Cationic polyacrylamide uses:

Sludge dewatering: according to the nature of pollution can choose the corresponding brand of this product, can effectively gravity sludge before entering the pressure filtration

Water. Dehydration, the production of flocculation, non-stick filter cloth, in the pressure of the filter does not disperse, less dosage, high dehydration efficiency, mud cake moisture content in 80%.

Sewage and organic wastewater treatment: this product in acidic or alkaline media are positive, so suspended in sewage.

Particle with negative charge of sewage flocculation precipitation, clarification is extremely effective, such as liquor factory wastewater, brewery wastewater, gourmet gourmet factory wastewater, sugar factory wastewater, Meat and food factory wastewater, beverage factory wastewater, textile printing and dyeing factory wastewater, with cationic polyacrylamide than anionic polyacrylamide, non-ionic polyacrylamide or inorganic salt effect is several times or dozens of times higher, because this kind of wastewater is generally with negative charge.

Flocculant for water treatment of waterworks: this product has the characteristics of less dosage, good effect and low cost, and it has better effect when combined with inorganic flocculant.

Oilfield chemicals: such as clay antiswelling agent, thickening agent for oilfield acidification, etc.

Paper additives: cationic PAM paper strengthening agent is a water-soluble cationic polymer containing amino formyl, with strengthening, retention, filtration and other functions, can effectively improve the strength of paper. The product is also a highly effective dispersant.

Anionic polyacrylamide uses:

Industrial wastewater treatment: for suspended particles, higher concentration, particles with positive charge, the PH value of water is neutral or alkaline

Sewage, iron and steel plant wastewater, electroplating plant wastewater, metallurgical wastewater, coal washing wastewater and other sewage treatment, the best effect. Drinking water treatment:

The water source of many waterworks in Our country comes from rivers, silt and mineral content is high, relatively turbid. although filtered by precipitation, it is still

Can not meet the requirements, need to add flocculant, dosage is 1/50 of inorganic flocculant, but the effect is several times of inorganic flocculant,

For serious organic pollution of river water can be used inorganic flocculant and my company's cationic polyacrylamide with the use of effect

Fruit is better. Amylase factory and distillery loss of starch distillery recycling: now many amylase factory wastewater contains a lot of starch, now

Anionic polyacrylamide is added to make starch particles flocculate and precipitate, and then the precipitate is pressed into cake shape by the press filter, which can be made

Feed, alcohol factory can also use anionic polyacrylamide dehydration, pressure filtration recovery.

Product introduction: Polyscrylamide is short for PAM. It is cationic, anionic and non-ionic. The molecular weight of PAM ranges from 4 million to 20 million.

Product performance:

Polyacrylamide molecules with positive groups (-CONH2), and dispersed in the solution of suspended particles adsorption and bridging, has a strong flocculation, so it is widely used in water treatment and metallurgy, paper making, petroleum, chemical, textile, mineral processing and other fields. PAM used for sewage treatment, the removal efficiency of organic matter in water is high, the amount of less, the sedimentation speed is fast, the cost of water is low, is other flocculant can not replace the product.

There are anionic, cationic and nonionic polyacrylamide types.

Anionic type is mainly used for domestic production water, industrial and municipal sewage treatment. It is also suitable for flocculation and sedimentation of red mud and mud separation in the process of alumina preparation. Cationic type with high molecular weight is mainly used for flocculation and precipitation of water suspension and turbidity. It is very difficult to flocculate when acidic and partial acidic solutions contain organic turbidity. In this case, cationic polyacrylamide can effectively flocculate precipitation, showing its outstanding performance. Use the form of 0.1-0.2% aqueous solution, must be prepared with water Ph≤7, with dilute solution after easy hydrolysis. It should be used together or used up on the same day, not for a long time.

Usage: PAM can be used alone or in combination with PAC for water treatment, but the mixing of PAM and PAC must be carried out separately. Determine the amount of water and dosage for dilution according to their own conditions.

Packaging and storage: The product is double-sealed with non-toxic POLYETHYLENE bag inside and plastic woven bag outside. The net weight of each bag is 25kg. Take precautions against moisture and avoid package damage. Store in a clean and dry environment.

 

Anionic polyacrylamide

features:

It is mainly used to deal with neutral suspensions mainly composed of inorganic solids.

use:

Anionic polyacrylamide is used to improve the removal of suspended solids, BOD and phosphate in municipal and industrial wastewater treatment. Adding 0.25mg/L hydrolyzed polyacrylamide in the primary wastewater sedimentation tank can increase the removal rates of suspended solids and BOD to 66%-23%, respectively. When 0.3mg/L anionic flocculant was added into the secondary wastewater treatment sedimentation tank, the removal rates of suspended solids and BOD could be increased to 87% and 91%, respectively. In the treatment of drinking water and domestic wastewater, it is used for surface water clarification, cleaning wastewater clarification and filtrate adjustment, etc. , used in mining for the clarification and flotation tailings, coal washing water plant filter, tailings (residue) dehydration, flotation tailings thickening and filtering to clarify, concentrate and hot potash solution and flotation processing liquid clarification, fluorite and barite flotation tailings clarification, are also used in the original brine salt processing, clarification of sludge dewatering, and phosphate recycling water treatment, etc. In casting and manufacturing industries, it is used for the purification of open furnace gas washing water, the clarification of waste water from powder metallurgy and pickling plants, the purification of electrolyte and the clarification of electroplating waste liquid.

 

Cationic polyacrylamide

Product Overview:

Cationic polyacrylamide is made of cationic monomer (DM, DMC, CPF, KMKAAC, DMAEMA, etc.) copolymerization of acrylamide, to granulation, drying, crushing, product appearance is white fine particles or powder.

Main uses:

1, sludge dewatering: according to the nature of sludge can choose the corresponding products of the corresponding molecular weight of the product, can effectively in the sludge into the pressure filter before gravity sludge dewatering. Dehydration, the production of large flocs, non-stick filter cloth, in the pressure of the filter does not disperse, less dosage, high dehydration efficiency, mud cake moisture content in 80% below.

2, sewage and organic waste water treatment: this product in acidic and alkaline medium is electropositive, so that the suspended particles in wastewater with negatively charged sewage flocculation precipitation, such as alcohol plant waste water, wastewater, RouShiChang brewery wastewater and gourmet powder factory wastewater, sugar refinery wastewater, beverage factory waste water, textile dyeing wastewater, etc., With cationic polyacrylamide than anionic polyacrylamide, non-ionic polyacrylamide or inorganic salt effect is several times or tens of times higher, because this kind of water with negative charge.

3, water plant flocculant treatment: the product has the characteristics of less dosage, good effect, low cost, especially with inorganic flocculant compound use effect is better. It will be a highly effective flocculant for water plants in the Yangtze, Yellow and other basins.

4, paper additives: cationic PAM paper strengthening agent is a water-soluble cationic polymer containing amino formyl, with enhanced, retention, filtration and other functions, can effectively improve the strength of paper. The product is also a highly effective dispersant

5, oil field chemicals: polyacrylamide in oil field drilling and oil field exploitation also has a certain chemical effect, such as it can be used as clay antiswelling agent, oil field acidification with thickening agent.

 

Nonionic polyacrylamide

Product Overview

Non-ionic polyacrylamide is a homopolymer of acrylamide monomer, which is granulated, dried and crushed. The appearance of the product is white fine particles or powder solid.

Main Purpose

1, all kinds of modified polyacrylamide basic raw materials

Such as anionic polyacrylamide, according to the use of different grades of non-ionic polyacrylamide as a base raw material for hydrolysis, Manich positive ion polyacrylamide, one of the most important basic raw materials.

2, textile industry auxiliaries

Add some other chemicals can be prepared into chemical slurry, used for textile sizing, can improve the adhesion, permeability and desizing performance, is the textile has anti-static, reduce the skein pulp spot, cloth machine break rate and falling, therefore, it has become the textile industry to chemical additives.

3, can be used for sewage treatment

When sewage show acid slurry, using nonionic polyacrylamide, as flocculating agent is most appropriate, then is adsorption of PAM, suspending particles produce flocculation precipitation, achieve the purpose of purifying water, also can be used as water treatment, this product is non-toxic, especially and inorganic flocculant, the best water treatment results.

4. Chemical grouting agent

Using 9.5 parts of non-ionic polyacrylamide plus 0.5 parts of N, N -- methylene bisacrylamide miscible can be used as a chemical grouting agent for water plugging of dam, ground grave and tunnel.

5, sand control and sand fixation

Non-ionic polyacrylamide into 0.3% concentration of solution, in the addition of crosslinking agent, spray on the desert, can play a role in sand control and sand fixation. The compromise method is one of the most effective ways to control desert and prevent desertification.

6. Soil moisturizer

Non-ionic polyacrylamide is highly hygroscopic, it can retain moisture in the soil, in arid areas, the use of the product can improve the soil.

7. Profile control and water plugging agent in oil field

Non-ionic polyacrylamide can be widely used as profile control and water plugging agent in oil field by combining with essential cellulose and adding certain chemical additives.

 

Website: https://www.asiafloc.com