The basic RO technology is pretty simple and no matter how large the plant, it is this technology that we use. But problems with a RO plant India can and will occur sooner or later. Some are the natural result of wear and tear, while some can be avoided with a little planning and thought in the beginning stages.
This is often the most common cause. Some plants have no provisions for pretreatment, while the others have a clearly inadequate pre-treatment facility. The aim of pre-treatment is to remove incompatible contaminants. This simple step ensures that the plant screens are protected from large contaminants that can damage it. It also minimises scale formation and fouling.
Pretreatment usually involves monitoring instruments with different pretreatment methods used to remove larger and incompatible contaminants. Any compromises in the method will result in a slow degeneration. We also need flow meters to detect any plugging of the filters.
There are many such small elements that must be included. Too often plant manufacturers or owners underestimate the importance of these key elements, leading to slow, but inevitable deterioration.
Not examining the incoming water supply
The effectiveness of the RO plant India will ultimately depend on the nature of the incoming water. The technology is refined and adapted accordingly. The water must be analysed at the planning stages. The common problem is the inadequate testing of water.
Testing is usually done once or twice to determine the nature of contaminants. This is ill-advised. Multiple samples must be taken under different seasons and time of the day. This gives us a more comprehensive idea of the quality of water and the contaminants that can flow in.
When testing the incoming water, some of the characteristics that must be tested are:
Turbidity: Turbidity is the cloudiness in the water which is a result of contaminants. The turbidity of the water can change with season and due to other external factors. We need consistent data that is gathered over an entire year to understand how turbidity changes in the region.
If the turbidity is too high, the plant will not be able to remove it completely. It also effects the volume of sludge and how we treat it. To counter the problem we have to provide for a lightly larger load, design a recycle and sludge treatment system.
Flow variation: All too often RO plant India owners take one tests and build it up as the average flow. While we do need to determine the average flow, we also have to estimate the peak flow. Without this, the plant will be completely ill-equipped when the flow is much larger than average.
Changing chemistry: One of the most ignored aspects is the changing water chemistry in an area. A plant has to anticipate this and modify its filters accordingly. Water chemistry often changes with season. For instance, some places may have more iron in the water flow in certain seasons. If the plant is not equipped with enough clarifiers and water retention facility, it cannot cope with the seasonal overload. The result will be inefficient functioning and sludge build-up.
Undersizing the plant
For reasons of economy or simple ignorance, many owners build plants either undersized or just meeting the requirement. This is especially true for pretreatment components. This is a mistake. Different factors can change the flow, its chemistry, turbidity and composition. When this happens we need water retention facility and pre-treatment systems like filters, media and UF.
Not providing for snags
Every RO plant India faces snags like power breakdown. This can cripple a plant if it happens too often. In rural or remote areas this is a common problem. It is essential to provide a support system when this occurs. A generator has to be on stand-by. Similarly, other snags like blockages in incoming water or the plant have to be anticipated and immediate help should be planned in advance.
Not enough trained manpower
An RO plant need trained manpower. We need personnel on-site, supervisors and experts who can carry out repairs. Too many owners compromise on this because of the cost of labour involved. Even if they have personnel on-site, they often underestimate the importance of regular maintenance.
Lack of regular maintenance
No RO plant India can run smoothy for a long-term period without regular maintenance. Parts like filters, media and screens have to be changed regularly. Owners often ignore this because of the cost involved. The result is an inefficient plant that is degenerating slowly.