Simple Cleaning Warnings Issued by Commercial RO Plant Manufacturers

RO plants used at commercial sites should be maintained and clean on decided schedule time. Commercial RO plant manufacturers bring special warnings that you should consider while cleaning the RO plant at the facility. Follow these guidelines and know the best way to sustain performance of the RO system.

Periodic cleaning of membranes can enhance system performance. In normal conditions, biological matter, mineral scale, organic substances and colloidal particles can create foul membranes.

Some warnings are listed below:

• Cleaning chemicals are dangerous and can hurt the walls of the RO plant. You need to read and comply with all disposal and safety precautions. If you are the user of RO plant, you must comply with all federal, state and local regulations that may apply.

• You can use an acid cleaning solution for removal of inorganic salts like CaCO3, CaSO4, BaSO4, and metal oxides. It is not advisable to use sulfuric acid because it may cause calcium sulfate to damage the plant membranes.  A normal cleaning solution has a solution o 0.2% hydrochloric acid, solution of 0.2% sulfamic acid, solution of 0.5% phosphoric acid, solution of 1.0% sodium hydrosulfite.

• You must use alkaline cleaning solutions for removal of silica, organic matter, and bio films from the RO plant membranes. A good solution for organic cleaning has a solution of 0.1% sodium hydroxide, solution of 0.1% sodium hydroxide and 0.1% of Na-EDTA, solution of 0.1% sodium hydroxide and 0.05% sodium salt of dedecyl-sulfate, solution of 1.0% sodium triphosphate, 1.0% na-EDTA, and 1.0% trisodium phosphate.

How to clean the RO plant membranes?

To set-up a cleaning station for RO plant membranes, you need to follow these directions-

1. Note down the amount and TDS of the fill with the system set when operating pressure is normal.
2. Make 15 gallons of inorganic cleaning solution that should have approx 2pH in a polypropylene or FRP tank with a removable cover. You should use RO water for make-up water if possible.
3. Connect a hose from the cleaning solution tank to the pre-filter inlet over the RO plant.
4. Feed the permeate and the drain tubes back to the cleaning solution tank. This will re-circulate when you clean the membranes.
5. Turn on the RO pump. Make adjustments in the concentrate control valve to a concentrate pressure of 50 psi.
6. Switch off the system and reconnect to the feed water supply.
7. Switch on the system and flush at 50 psi for 15 minutes. Eject all the permeate and concentrate water.
8. Repeat this process for organic cleaning solution.

You can get more updates about cleaning and sanitation of RO plant from commercial RO plant manufacturers. 

Indian STP plant manufacturers highlighting Aerobic treatment in ASBs

If you are looking for key information on sewage treatment plants, you should know about the 2 major types of systems used by STP plant manufacturers India to treat sewage. These are aerobic and anaerobic systems. Each treatment is meant for different purposes and has pros and cons. In this article, manufacturers of STPs will discuss about Aerobic treatment in detail.

Aerobic treatment for sewage

Aerobic sewage treatment is a process in which bacteria use oxygen to degrade pollutants and organic matter involved in various production systems. The two common types of aerated waste water systems are activated sludge systems and aerated stabilization basins. The aerated stabilization basins (ASBs) are widely used as treatment systems in the pulp and paper industry and are also used in some industries and municipalities. 

There are eight growth pressures that put impact on the treatment system. However, in this post, we will talk about the two major pressures, i.e. oxygen and organic loading. In a general model of wastewater treatment system, the influent entering to the system has the most biochemical oxygen demand as it is untreated. Since the influent reaches the ASB, it makes entry to the aerated environment, which is a starting point of degradation. 

Distinct types of aeration are used in ASBs but the widely used are either surface aerators or diffused aeration systems. In case you are using surface aeration, multiple units are required to be properly spaced in order to treat the water. Diffused aeration is normal air supplied through blowers or compressors and piped under the surface. Air is released evenly under the surface throughout the ASB. Occasionally, manufacturers and engineers use pure oxygen in wastewater treatment; however, it is uncommon in ASBs. 

The biochemical oxygen demand degradation is achieved through aerobic bacteria in a system. The bacteria present in sewage use oxygen as an electron receptor in order to transform the organic material to carbon dioxide. This entire process helps bacteria to multiply and create more bugs to break down more biochemical oxygen demand.

Whatever the type of treatment used by the industries, each of the treatment systems has its place in the world today. Being different in the process, both the treatments are used to achieve maximum degradation, while taking care of standards and regulations set by the environmental agencies.

STP plantmanufacturer India has just highlighted the aerobic treatment. If you want to ask anything related to STPs or sewage treatment technology, comment below.