How to choose suitable polyacrylamide in sludge treatment?
Posted on Aug 29.2024
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Selecting the right polyacrylamide (PAM) is one of the key steps in sludge treatment. Different types of PAM have very different effects on sludge dewatering and flocculation.
1. Sludge properties
Sludge type: Different types of sludge may require PAM of different properties. Understanding the solid content, particle size distribution and chemical composition of the sludge is an important basis for selecting PAM.
Sludge concentration: High-concentration sludge may require PAM with a higher molecular weight to improve the flocculation effect.
2. Properties of PAM
Molecular weight: The molecular weight of PAM affects its flocculation performance. Generally speaking, higher molecular weights (such as millions) are suitable for treating concentrated sludge, while lower molecular weights (such as tens of thousands to millions) are suitable for treating thin sludge.
Ionicity: PAM has three types: cationic, anionic and non-ionic. The selection of the appropriate ionicity depends on the charge characteristics of the sludge and the treatment requirements.
For example:
Cationic PAM: Suitable for sludge with strong negative charge (such as some types of industrial sludge).
Anionic PAM: Suitable for sludge with positive charge (such as some municipal sludge).
Non-ionic PAM: Suitable for neutral sludge.
3. Conditions of use
pH: The effect of PAM is affected by the pH of the sludge. Consider the pH range of the sludge when selecting and ensure that the PAM performs well within this pH range.
Temperature: Different PAMs may have different stability and effects at different temperatures. Ensure that the selected PAM is stable at the actual operating temperature.
Selecting the right polyacrylamide involves multiple factors, including sludge properties, molecular weight and ionicity of PAM, conditions of use, and economics. By comprehensively considering these factors and actual testing, you can find the type of PAM that best suits your sludge treatment needs.
Tag:PAM,Polyacrylamide,sludge treatment
Application of Heptane in Cleaning Agents
Posted on Aug 23.2024
Heptane is an important organic solvent, which is widely used in various industrial and laboratory fields due to its unique chemical properties and excellent dissolving power.
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Industrial equipment cleaning:
n-heptane, as one of the main ingredients of cleaning agents, can effectively dissolve these substances and evaporate quickly without leaving any residue. It is widely used in equipment cleaning in the automotive, electronic equipment and machinery manufacturing industries.
Electronic component cleaning:
Electronic components are prone to accumulate grease and other contaminants during the production process, affecting their performance and reliability. n-heptane can thoroughly clean these contaminants without damaging the components.
Laboratory cleaning:
In chemical laboratories, n-heptane is often used to clean experimental equipment such as test tubes, beakers and burettes, which improves experimental efficiency.
Pharmaceutical industry cleaning:
In the pharmaceutical industry, cleaning of equipment and containers is crucial to ensure the purity and quality of the product. n-heptane, as a cleaning agent, can clean grease and other contaminants in pharmaceutical equipment and containers, providing a guarantee for the production of high-quality drugs.
Tag:n-Heptane,Heptane,Cleaning Agent.
Crude oil fell by 2%, Chinese chemical product prices rose!
Posted on Aug 22.2024
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With the global economic outlook uncertain, international crude oil prices fell again.
On August 21, the closing price of WTI crude oil futures fell by 1.69%, the closing price of Brent crude oil futures fell by 1.49%, and the main contract of Shanghai crude oil night trading fell by 2.06%. The main reason for the decline in oil prices was that the US government lowered employment data and the market was pessimistic about the demand outlook.
Although international oil prices continue to fall, China's chemical market has shown amazing resilience.
According to the 132 kinds of chemical products monitored by Jinlianchuang, the prices of 22 kinds increased, the prices of 80 kinds remained stable, and the prices of only 30 kinds fell. Among them, DMC, alkaline methyl acetate, acetic anhydride, methanol and coal tar experienced the most significant increases, ranging from 1.42% to 3.66%.
In general, despite the continued decline in international crude oil prices, the domestic chemical products market has demonstrated strong independence and resilience, with prices of most varieties remaining stable or rising.
Tag:Crude oil,Chinese Chemical Market
International oil prices are rising, and the chemical industry may rebound
Posted on Aug 21.2024
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As the Gaza ceasefire negotiations proceed, there has been some easing in the geopolitical situation. The market's outlook on demand prospects is bearish and negative sentiment continues. Demand-side pressure and geopolitical instability remain the main concerns of the market. It is expected that international oil prices may consolidate and rise.
Phosphorus chemical industry: With the continuous improvement of the integrated supporting rate of domestic wet phosphoric acid-iron phosphate industry, the impact of phosphoric acid on iron phosphate in the value chain transmission has increased. At present, the supply of wet phosphoric acid is tight, and the price is gradually rising; secondly, some wet phosphoric acid units are under maintenance, and the supply side is tight, resulting in a short-term mismatch between supply and demand.
However, in mid-to-late August, with the gradual restart of downstream maintenance units, the tight supply of phosphoric acid may be slightly alleviated, but the supply side still has positive factors.
Tag:Phosphoric,Phosphorus chemical industry,Crude oil prices fluctuate sharply
Is there a difference between naphthalene balls and mothballs?
Posted on Aug 14.2024
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There is a difference between naphthalene balls and mothballs, although both are used to repel insects. Here are their main differences:
Main ingredients:
Naphthalene balls: The main ingredient is naphthalene, an aromatic compound with a strong odor.
Mothballs: The main ingredient is camphor, a chemical that comes from the camphor tree and has a characteristic odor.
Odor and effects:
Naphthalene balls: Naphthalene has a strong odor and is effective in repelling moths in clothing, such as clothes moths. Its odor may be pungent to humans and pets.
Mothballs: Camphor has a fresh odor and is widely used to repel moths in clothing. It is also used in some traditional Chinese medicine prescriptions. Its odor is relatively mild to humans and pets, but it can also cause discomfort to some people.
Volatility and use environment:
Naphthalene balls: Naphthalene is more volatile, so it works better in closed environments, such as closets or storage rooms. It may also cause greater odor pollution to the environment.
Mothballs: Camphor is also more volatile, but generally causes less air pollution. Suitable for use in more open spaces.
In general, although naphthalene balls and mothballs are both insect repellents, they differ in their ingredients, odor, volatility, and safety.
Tag:Naphthalene,Insect repellent,Naphthalene ball wholesale.
Breaking news! Container exploded on cargo ship!
Posted on Aug 09.2024
On August 9, "Ningbo Explosion" became a hot topic. An explosion occurred at Ningbo Phase III Container Terminal. The reporter called Ningbo Port, and relevant personnel said that the explosion was true and the terminal belonged to a subsidiary company. However, due to the suddenness of the incident, the company did not know the specific situation, and the accident is still under investigation. It was initially determined that the container on the ship exploded, and no casualties were reported.
FKH would like to remind everyone that shipments must be compliant and legal! Please declare the cargo information correctly, and do not conceal, lie, misreport, or miss report!!
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