Water Treatment Industry

Committed to purifying diverse water sources to meet stringent quality standards for both domestic and industrial applications. This sector depends on high-performance chemicals to efficiently remove impurities and contaminants, ensuring water safety and supporting sustainable treatment processes. Sodium bicarbonate and soda ash serve as essential chemicals, contributing to pH regulation, precipitation of heavy metals, and overall water treatment efficiency.

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Sodium Bicarbonate

Weakly alkaline, mild and non corrosive, easily decomposed into carbon dioxide when heated.

Industrial wastewater pH adjustment scenario

Specific Scenario

Neutralizes acidic wastewater from electroplating and dyeing. Its mild alkalinity enables safe and controlled pH adjustment, minimizes corrosion, and ensures stable, compliant discharge.

Product Function

Its weak alkalinity enables gradual and uniform pH adjustment to neutral, effectively preventing localized alkaline hotspots associated with stronger bases. The mild reaction minimizes corrosion to treatment equipment, ensures operational safety, and reduces long-term maintenance costs.

Industrial wastewater pH neutralization (acidic wastewater treatment)

Applicable Scenarios

Soda ash is used to neutralize acidic industrial wastewater (pH ≤ 5) from sectors like electroplating, printing/dyeing, and chemical engineering.

Application Advantages

Soda ash has a mild alkalinity and minimal pH fluctuations during the adjustment process, which can reduce the problem of heavy metal hydroxide precipitation and encapsulation caused by local alkalinity; And the cost is relatively low, suitable for large-scale wastewater treatment.

Soda Ash Light

Adjusting pH value, softening water quality, and removing heavy metal ions are the basic chemicals for industrial wastewater and municipal sewage treatment.

Soda Ash Dense

Adjusting pH value, softening water quality, and removing heavy metal ions are the basic chemicals for industrial wastewater and municipal sewage treatment.

Applicable Scenarios

Soda ash is ideal for industrial circulating water pre-treatment and municipal tap water softening in hard water areas. By precipitating calcium and magnesium ions, it prevents scaling, improves heating efficiency, reduces maintenance costs, and provides a reliable, economical solution for industrial and public water treatment.

Application Differences

Soda Ash Dense is suitable for continuous softening systems due to its coarse particles and slow dissolution (by slowly stirring the reaction in a reaction tank); Soda Ash Light dissolves quickly and is suitable for intermittent softening equipment (such as small circulating water filtration systems).

FAQ

When should one choose Soda Ash(Soda Ash Dense or Soda Ash Light), and when should one choose Sodium Bicarbonate?

Selecting Soda Ash
It is necessary to quickly and significantly increase the pH value (for example, neutralize strongly acidic wastewater, meet the pH requirements for discharge, and promote the precipitation of metal hydroxides (excluding heavy metals)).
We need to use carbonate ions for chemical precipitation softening.
It is necessary to simultaneously increase the pH and total alkalinity, and allow the pH to rise higher.
Choose Sodium Bicarbonate
Need to gently and accurately increase or stabilize pH to avoid excessively high pH.
The main goal is to supplement and maintain alkalinity/buffering capacity, without causing drastic changes in pH.
Dealing with weakly acidic conditions or situations that require buffering.
As a neutralizing agent after dechlorination.

Can Soda Ash and Sodium Bicarbonate be used together?

Yes, they are often used in conjunction for precise water chemistry control. A common strategy is to use Soda Ash for the initial significant pH adjustment and then use Sodium Bicarbonate to “lock in” the new pH level by building up alkalinity, making the system more resistant to pH fluctuations.

How do I calculate the correct dosage for my water treatment application?

Dosage depends on the specific water chemistry, including the initial and target pH/alkalinity, and the concentration of contaminants like calcium. It is highly recommended to conduct jar tests on a water sample to determine the optimal dosage. Our technical team can provide guidance and standard calculation formulas based on your water analysis report.

Are these products suitable for use in potable (drinking) water treatment?

Absolutely. Both Soda Ash and Sodium Bicarbonate are approved for use in drinking water treatment by major regulatory bodies like NSF/ANSI Standard 60 when the products are manufactured to the required specifications. Be sure to specify to your supplier that you need the NSF-certified grade for potable water applications.

Have a specific technical question? Contact our experts today for a consultation.

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