Sodium hypochlorite storage tank

Types of sodium hypochlorite storage tanks

Chemical storage is a crucial consideration for industries that use sodium hypochlorite storage tanks. Proper containment and the right tank material can prevent dangerous reactions and leaks that can harm people and the environment. A secondary containment system, such as a double-walled storage tank, can provide an extra layer of safety in case of a tank leak or rupture.

Some storage solutions for sodium hypochlorite are:

• Plastic sodium hypochlorite storage tanks

Sodium hypochlorite is a significant oxidizing agent and has corrosive properties. Therefore, it is essential to choose a tank material that is compatible with sodium hypochlorite and can withstand its corrosive nature. Plastic (such as PVC, CPVC, or polyethylene) storage tanks are the most common solution. They are lightweight, easy to manage, and cost-effective. PVC and CPVC plastic tanks are suitable for commercial and industrial use, while polyethylene tanks are often used for storing sodium hypochlorite in water treatment, sanitation, and food processing.

• Fiberglass-reinforced plastic (FRP) sodium hypochlorite storage tanks

FRP tanks are a popular option for storing sodium hypochlorite. The tanks' corrosion-resistant fiberglass exterior is combined with a durable resin interior coating to protect the sodium hypochlorite from interacting with the fiberglass. The resin lining can be tailored to the specific demands of storing sodium hypochlorite, making FRP tanks a safe and reliable choice for the long-term storage of the chemical.

• Double-wall sodium hypochlorite storage tanks

Double-wall tanks are a type of tank design that adds an outer containment wall to the standard inner tank. The two walls are often made of different materials. For example, the inner tank can be made of stainless steel, which is compatible with sodium hypochlorite, and the outer tank can be made of carbon steel. Double-wall tanks provide an extra layer of protection against leaks and spills. The outer wall serves as a secondary containment system to catch any leaks or spills from the inner tank, providing a safeguard against environmental contamination and safety hazards.

Specification and maintenance of sodium hypochlorite storage tanks

Below are some important specifications and maintenance requirements to consider when using sodium hypochlorite storage tanks in various industries.

• Specifications

Material of construction:

It is important to ensure the storage tanks are built from the appropriate material. This is because sodium hypochlorite is a strong oxidizing agent that can corrode and degrade certain materials. Common corrosion-resistant materials used for sodium hypochlorite storage tanks are PVC, CPVC, fiberglass-reinforced plastic (FRP), polyethylene, and polypropylene.

Capacity:

Storage tank capacity should be selected based on usage requirements, space limitations, and operational needs. Sodium hypochlorite is best stored in small volumes to prevent degradation.

Pressure and temperature rating:

It is essential to select storage tanks with the appropriate pressure and temperature ratings. This is to ensure they can withstand the specific operating conditions and maintain the chemical stability of sodium hypochlorite.

Consideration for tank venting system:

Storage tanks for sodium hypochlorite should have a well-designed venting system. This is necessary to protect the tank from overpressure and vacuum during filling and draining. It also helps control the release of toxic vapors into the environment.

• Maintenance

Regular inspection:

It is important to inspect sodium hypochlorite storage tanks regularly to check for signs of corrosion, leakage, or damage. The frequency of inspection should be based on the material of the tank and the concentration of sodium hypochlorite being stored.

Cleaning:

The storage tanks must be cleaned periodically to remove any residue or buildup that can lead to chemical degradation. When cleaning hypochlorite tanks, it is important to follow the manufacturer's guidelines and use compatible cleaning agents.

Leak detection:

Install a leak detection system to enable early detection of leaks or spills. This can include a sensor, alarm system, or automatic shut-off mechanism.

Training and handling:

Ensure that personnel who handle storage tanks of sodium hypochlorite are properly trained in safety procedures and handling protocols. This is to minimize the risk of exposure and accidents.

Record keeping:

Keep maintenance and inspection records of sodium hypochlorite storage tanks. This will help track the maintenance history and compliance with regulations.

Scenarios of sodium hypochlorite storage tanks

Here are some scenarios where sodium hypochlorite tanks can be used:

• Public water treatment facilities:

Sodium hypochlorite is widely used in drinking water disinfection. Water treatment plants often use sodium hypochlorite storage tanks to store and transport disinfectants.

• Industrial wastewater treatment:

Industries such as pharmaceuticals, food processing, and electronics use sodium hypochlorite to treat wastewater. These industries may use large bleach storage tanks to store the disinfectant before use.

• Swimming pools and water parks:

Public pools, water parks, and aquatic venues often use sodium hypochlorite as a disinfectant to maintain water quality. These facilities may use hypochlorite tanks to store bulk disinfectants.

• Healthcare facilities:

Hospitals, clinics, and other healthcare facilities often use sodium hypochlorite disinfectants to clean and disinfect surfaces. These facilities may use sodium hypochlorite storage tanks to ensure a constant supply of disinfectants.

• Food processing industry:

The food processing industry often uses sodium hypochlorite disinfectants to clean production equipment and facilities. Food processing plants may use sodium hypochlorite storage tanks to store large volumes of disinfectants.

• Agriculture and horticulture:

Agricultural and horticultural facilities may use sodium hypochlorite solutions to disinfect irrigation systems, greenhouses, and equipment. These facilities may use sodium hypochlorite storage tanks to store the disinfectant securely.

• Janitorial and sanitation services:

Janitorial and sanitation companies may use sodium hypochlorite disinfectants for cleaning services in commercial properties. These service providers may use sodium hypochlorite storage tanks to ensure a sufficient supply of disinfectant products.

How to Choose Sodium Hypochlorite Storage Tanks

Selecting the appropriate sodium hypochlorite tank for chemical storage is a vital aspect of managing the chemical properly. Here are some important factors to consider when choosing a sodium hypochlorite storage tank.

• Chemical Compatibility:

Ensure the sodium hypochlorite storage tank is constructed with materials compatible with the chemical and will not react or degrade upon contact. In particular, sodium hypochlorite is a chemical that can be corrosive, so it is important to choose a tank that can withstand its corrosive properties.

• Quality and Compliance:

A high-quality storage tank that complies with relevant industry standards and regulations will be needed. Such as those that meet required safety guidelines and standards to ensure proper storage of sodium hypochlorite.

• Strength and Durability:

Choose a sodium hypochlorite tank with high-strength construction that can withstand the demands of long-term chemical storage and resist potential leaks, spills or corrosion. High-quality tanks are more durable and offer longer service life, reducing the risks of chemical exposure and environmental impacts.

• Size and Capacity:

Select a tank size and capacity that can adequately accommodate the anticipated volume of sodium hypochlorite, considering factors such as usage rates, storage needs, and available space. It is important to ensure the tank is large enough to hold the required volume of chemical without overfilling.

• Environmental Considerations:

Choose a storage tank that is suitable for the intended storage environment, whether indoor or outdoor, and ensure proper containment and protection against potential environmental hazards, such as leaks, spills, or runoff.

• Maintenance and Inspections:

Consider the maintenance requirements and inspection protocols for the chosen tank, ensuring that routine maintenance, integrity checks, and leak detection systems are in place to support ongoing safe operation and regulatory compliance.

Q & A

Q1 How long does sodium hypochlorite last in a tank?

A1 The chemical can last for a year or more in the tank. However, it will degrade faster if the tank is exposed to sunlight.

Q2 What is the ideal temperature for storing sodium hypochlorite?

A2 The recommended storage temperature for sodium hypochlorite is below 25°C. The chemical will decompose faster at higher temperatures.

Q3 Can sodium hypochlorite tanks be mixed with other chemicals?

A3 The chemical is very reactive. So, it should not be mixed with other chemicals unless the manufacturer specifies it. Mixing the chemical with other substances can cause hazardous reactions.

Q4 Can sodium hypochlorite tanks be stored underground?

A4 No, sodium hypochlorite tanks should not be stored underground. This is because leakage from the tank can contaminate soil and groundwater.

Q5 What is the best material for a sodium hypochlorite storage tank?

A5 The best material for the tank is a double-walled tank. This is because the chemical is highly reactive and may corrode a single-walled tank. The double-walled tank will provide an extra layer of protection against leaks and spills.