Month: September 2021
Why is FRP membrane Housing preferred more than PVC membrane housing and Stainless steel?
In this article, we will discuss why FRP membrane Housing is more preferred than PVC membrane housing and Stainless steel membrane housing.
Why is FRP membrane housing preferred more than PVC membrane housing and Stainless steel?
Membrane housing is nothing but a pressure vessel, and it is used for loading membrane elements for water purification / liquid process in the reverse osmosis process. There are three different types of membrane housings available with different materials for water treatment available in the market. They are FRP (fiberglass reinforced plastic), stainless steel, and PVC. Presently for more reverse osmosis water treatment systems, FRP membrane housing is the best preferable option. Everyone shows interest in choosing this FRP membrane housing because of the best design size, pressure bearing capacity, material properties, rust-free, and operating temperature compared to PVC membrane shells and stainless steel.
The following are some of the reasons why FRP membrane Housing is good or preferred more than PVC membrane shells and stainless steel:
Very High-Pressure Capacity:
As everyone knows, the reverse osmosis system depends on pressure to purify water or concentrate water. This membrane housing is nothing but a vessel that usually bears lots of pressure. In the process of reverse osmosis, the very high the concentration of raw water, the greater the pressure is required to apply.
The following table shows the pressure range comparisons for FRP membrane housing over stainless steel membrane housing and PVC membrane housing. The FRP membrane housing contains a very high pressure capacity than stainless steel membrane housing and PVC membrane housing. It seems to be one of the factors “why FRP membrane housing is preferred mainly or good for water treatment systems than PVC membrane housing and stainless steel membrane housing?”.
| Type of Membrane housing | FRP Membrane Housing | Stainless Steel Membrane Housing | PVC Membrane Housing |
| Pressure | 150–1500 psi | ≤ 600 psi | ≤ 200 psi |
Huge Design Size:
Large in terms of the size and quantity for membrane elements, then the huge the water yield and the very high working efficiency of the reverse osmosis system. The very common reverse osmosis membrane elements contain 2.5″, 4″,8” and 16″ diameters. The following table shows the design sizes comparisons for FRP membrane housing than stainless steel membrane housing and PVC membrane housing. Both stainless steel membrane housing and FRP membrane housing are used to load membrane elements, and the FRP membrane housing is designed for very long and loads more membrane elements. So many big-scale water purification projects mostly prefer FRP membrane housings compared to stainless steel membrane housing and PVC membrane housing.
| Diameter | Length | FRP Membrane Housing | Stainless Steel Membrane Housing | PVC Membrane Housing |
| 2.5” | 14”/21”/40” | 1/1/1 | 1/1/1 | 1/1/1 |
| 4” | 40” | 1–6 | 1–3 | 1–3 |
| 8” | 40” | 1–8 | 1–3 | 1–3 |
| 16” | 40” | 1-6 | 1-2 | 1-2 |
Robust material property:
FRP membrane housing is prepared with very strong materials for corrosion-free chemical resistance and greater mechanism strength. Substances produced by any membrane housing corrosion are important sources of RO membrane contaminants, and water purifying projects tend to be very long-term. Therefore, the corrosion-resistant performance and service life of the membrane housing are very important. FRP is very high in resistance to all chemical solvents, and it has a very long service life. It is hardly ageing. So FRP membrane housing is preferred for almost all water purifying projects. The stainless steel membrane housing and PVC membrane housing are very difficult to resist corrosion, especially the chlorine-containing medium. Also, FRP membrane housing contains greater strength and very high impact resistance, making it difficult to damage during installation and transportation.
Broad operating temperature range:
FRP membrane housing, PVC membrane housing and stainless steel membrane housing all these membranes work at room temperature. But in some cold regions, only FRP membrane housing is preferred because the material properties used in the FRP membrane shell is affectless by low temperature. The stainless steel membrane housing and PVC membrane housing become so hard and brittle because of very low temperature, leads the membrane housing susceptible to damage and badly affects the service life of the membrane housing.
| Type of membrane | FRP Membrane Housing | Stainless Steel Membrane Housing | PVC Membrane Housing |
| Operating Temperature | -10 °C–49 °C | 0 °C–100 °C | 0 °C–40 °C |
Explore more details about here FRP Membrane Housing.
All the above properties make FRP membrane housing more preferable than PVC membrane housing and stainless steel membrane housing.
WATER SOFTENER – Few important details of water softener
WATER SOFTENER:
A water softener is a process of removing hardness from water, i.e., removing the calcium, iron, and magnesium ions. In other words, water may contain excess calcium, iron and magnesium form scaling on the water due to industrial pollution, the environment of some areas. That scaling water is nothing but hard water. By using this water softener process, hard water is converted into soft water, i.e., nothing but non-scaling form water.
Components details of a Water softener:
The following are the components used in a water softener:
- Pressure Tank or Resin Tank
- Top Diffuser & Bottom Diffuser
- Outlet manifold
- Resin
- Control head
- Pre-filters
- Timer
- Valves
- Brine tank
Brine tank:
The following are the components of the brine tank:
- Salt grid plate
- Brine float filter screen
- Brine wall
- Injector
- Brine wall float control
Applications of a water softener:
The following are the applications of water softeners:
- Water softeners are used in the food and beverages industry, pharmaceutical industry, industrial water plants, mineral water plants, hotels, restaurants, laundries shop, air conditioning plants, boiler feed, cooling towers etc.
Water softener advantages:
The following are the advantages of a water softener:
Prevents scale formation:
A water softener eliminates hardness from water and protects your daily use appliances and industrial machinery from scale formation.
Prevents hard water effect on the human body:
The water softener stops the effects of hard water on the human body like hair fall, dry and itchy skin, rough and dry hairs etc.
Protects residential appliances from clogging due to scale formation:
Soft water protects your daily use appliances and bathroom fittings like pipes, shower heads, geysers, toilet seats, washing machines, dishwashers etc from clogging or choking due to hard water.
Simple to install:
Water softeners are very easy to install. You just need guidance during installation but not training.
Easy to operate:
Water softeners are easy to operate. It does not require any special training.
Affordable price:
Water softeners are available according to your needs or requirements at affordable prices.
Types of material availability for a water softener:
The following are the wide range of materials available for a water softener:
- FRP
- LDPE
- MS
- MS Rubber Lined
- Stainless steel
Explore more details about here Water Softeners.
How Is Ozonator Used In Water Filtration?
SAHARA INDUSTRY has a wide range of Ozonators starts from 0.5 gram ozonator to 200 grams ozonators. We supplied number of ozonators to swimming pools, textile industries, pharmaceuticals and mineral water plants.
Ozone has a greater disinfection effectiveness against bacteria and viruses compared to chlorination. In addition, the oxidizing properties can also reduce the concentration of iron, manganese, sulfur and reduce or eliminate taste and odor problems.
Ozone oxides the iron, manganese, and sulfur in the water to form insoluble metal oxides or elemental sulfur. These insoluble particles are then removed by post-filtration. Organic particles and chemicals will be eliminated through either coagulation or chemical oxidation. Ozone is unstable, and it will degrade over a time frame ranging from a few seconds to 30 minutes. The rate of degradation is a function of water chemistry, pH and water temperature.
Ozonation Process:
The formation of oxygen into ozone occurs with the use of energy. This process is carried out by an electric discharge field as in the CD-type ozone generators (corona discharge simulation of the lightning), or by ultraviolet radiation as in UV-type ozone generators (simulation of the ultraviolet rays from the sun). In addition to these commercial methods, ozone may also be made through electrolytic and chemical reactions. In general, an ozonation system includes passing dry, clean air through a high voltage electric discharge, i.e., corona discharge, which creates and ozone concentration of approximately 1% or 10,000 mg/L. In treating small quantities of waste, the UV ozonators are the most common, while large-scale systems use either corona discharge or other bulk ozone-producing methods.
The raw water is then passed through a venturi throat which creates a vacuum and pulls the ozone gas into the water or the air is then bubbled up through the water being treated. Since the ozone will react with metals to create insoluble metal oxides, post filtration is required
Ozone Applications:
- Ozone generator for RO plants
- Ozone generator for Aquarium
- Ozone generator for Swimming pool use
- Ozone generator for pharmaceutical use
- Ozone generator for Mineral water plants
- Ozone generator for Textiles use
Explore more details about here Ozonater.
A few important things to know about FRP Pressure vessels
FRP (Fibreglass Reinforced Plastic) is an updated composite material used for chemical plants appliances and equipment namely vessels and tanks. FRP tanks and vessels have a number of useful applications including both industrial and commercial water treatment system. FRP tanks or vessels are durable, lightweight, flexible, high strength, corrosion resistant and less expensive. And thus such vessels are often considered as the true alternative to SS vessels.
What are the Features and benefits of FRP vessels and tanks:
- Since they don’t rust, there is no need for reclading or painting.
- FRP vessels have only a very few issues related to stress, heat, conductivity as well as weather conditions.
- They have higher and better corrosion resistance capacity in comparison to their metal counterparts.
- FRP tanks and vessels are super light in weight. They are just 2/3rd the weight of aluminum while only 1/4th of steel. And thus FRP equipment’s can be better handled.
- FRP items are less expensive than metal alternatives; like they are almost half the price of steel. FRP lasts at least 5 to 10 times longer than stainless steel even in extreme corrosive environments.
- FRP equipment is more skid resistant than the metal ones.
- FRP vessels are now equipped with better resin treatment related to impact, heat and crack. And this obviously encourages its extensive use versus metal substitutes by the topnotch FRP Vessels / Tank Manufacturer.
- They are highly customizable in terms of design.
- FRP is non-conductive of electricity and thus there is no risk of shorting out electrical equipment.
- Addition of brominated materials makes FRP vessels ignition resistant.
- FRP is an efficient insulating material featuring good thermal expansion property.
- FRP vessels can be well heat traced from the bottom of the same.
- It hasn’t any flammability hassle while welding.
- It doesn’t leave any trace metal contamination in shampoos or antiperspirants.
- Its adhesive feature and elongation of resin help absorbing equipment vibrations.
Why is FRP a preferred choice for manufacturing tanks and vessels?
FRP is a widely accepted and widely used material typically used for making vessels and tanks to be used in chemical plants as well as water treatment systems. The key construction is done by means of filament winding. FRP is essentially corrosion resistant. It doesn’t develop corrosion even while exposed to liquid. Moreover, it can effectively withstand hydrostatic forces and strong tensile as well. It is often better and stronger than stainless steel. And thus FRP is often chosen for manufacturing water vessels and storage tanks.
How do FRP tanks and vessels help in water treatment ?
As already mentioned, FRP is immuned to liquids including water as well as harsh chemicals. Thus the any leading FRP Pressure Vessel Manufacturer prefers FRP for using in water treatment plants. FRP is leak-proof and thus it keeps the flow of water easy and lucid. Moreover, it is flexible and thus can be given any shape (vertical or horizontal.) and size (big or small).
Explore more details about here FRP Membrane Housing.
Best manufactures of FRP membrane housing in India – The life span of FRP membrane housing
FRP membrane housing is manufactured in the brand name of ALFA ≈ AEROSOL. In this article, We will discuss the Best manufactures of FRP membrane housing in India, also about the life span of FRP membrane housing, the materials used in FRP membrane housing, and the Precautions you need to take while replacing FRP membrane housing.
Best manufactures of FRP membrane housing in India:
Alfa Aerosol is one of the best manufactures of FPR membrane housing and exporters of quality water purifying equipment in India. Alfa Aerosol has advanced technological machines like CNC Filament Winding Machine, Engineering Plastic Molding Machines, and Precision resineincertion machine and qualified team. Along with the FRP membrane housing product, there are many more technically advanced products with the best quality and service for your low maintenance of liquid processing industry like Reverse Osmosis, ETP, STPEtc
Precaution you need to take while replacing FRP membrane housing:
As FRP membranes are manufactured with robust materials, there is no need to change the FRP membrane housing because of minimum life span is 25 years. The following is the only precaution you need to take while replacing FRP membrane housing:
Before opening the endcap, you need to completely down the pressure, and all the pump needs to be off.
Materials used in the manufacture of FRP membrane housing:
The following two materials are used to manufacture FRP membrane housing:
- Epoxy resin
- Fiberglass
The life span of FRP membrane housing:
The minimum life span of FRP membrane housing is 25 years because of filament winding with robust materials called epoxy resin, fiber glasses. The epoxy resin helps for chemical resistance, and fiberglass provides strength and bears the pressures.
Explore more details about here FRP Membrane Housing.
Maintenance Guide for FRP Membrane Housing
FRP membrane housing performance makes as the perfect product for water purifying than PVC membrane housing and stainless steel membrane housing. Today, in this article, we will discuss maintenance guidance and uses of FRP membrane housing.
Maintenance Guide for very Long and best Performance of FRP Membrane Housing:
After successfully installing your water processing system, you need to carefully check all the equipment used in the system is installed according to technique and necessary operating requirements to avoid any improper operation. After the perfect check, the shell needs to be used based on the installation and maintenance guide.
Safety and requirements:
FRP Membrane vessels are mainly designed for the long term with chemical resistance usage as housing for only osmosis membrane elements. The allowable maintain temperature is -7°C to 49°C. The filament wound FRP shell is composed of continuous fiberglass impregnated with a heated epoxy resin system. The PH range of water allowable is 3–10 pH with very normal operating conditions, and it should be 2–12 pH if the vessel needs to be cleaned. Cleaning agents need to be wiped off and cleaned from that vessel after the cleaning process.
In the case of the water processing system, sometimes there may be potential for explosive head failure, resulting in very serious injury or loss of life. But, again, this is because so many factors need to be taken to guarantee safety.
For example:
- Abnormal backpressure always need not be above 125PSI
- Use of unallowable solutions.
- Forbid to remove shell under working conditions.
- Vibratory of environmental factors.
- Process fluid, shell, and assemblies compatibility.
- The shell need not use beyond that designed specific pressure.
- Professionals must train the users, and they need to use the shell-based to the requirements.
- The shell needs not to use as support. Do not apply excessive force to any fittings which are connected directly to a pressure vessel.
Uses of FRP Membrane housing:
The following are the use of FRP Membrane housing:
- The primary use of FRP membrane housing gives pressure to the membrane to help in treat dirt water to clean water.
- It is having chemical resistance.
- It contains excellent mechanical strength.
- FRP membrane Housing is a corrosion-free product.
Explore more details about here FRP Membrane Housing.
Conclusion:
Follow the above maintenance guide tips for the best performance of FRP membrane housing.