Antiscalant Dosing with Chemtex Chemicals

Scale and Corrosion is considered a curse to all industries, be it large or small.

Due to their subjection to water systems, heavy metal installations, industries face a huge annual loss due to these complications as they have direct implications on the production rate and outcome. Formation of scales cause severe metal lining problems, decrease in fluid flow rate, pitting and perforation, pore throats, wear and tear, machinery failure and primarily first stage of corrosion (in most cases).

Antiscalant dosing is preferred over other conventional treatments in counteracting scaling and corrosion. The primary reason being its simplicity and effectiveness over particulate matter deposition and cost efficiency. Most antiscalant chemicals work on adsorption mechanism, where they get adhered to the surface, preventing any interaction between inorganic salts and surface lining, ensuring lesser accumulation, lesser precipitation in the feeding solution, and ensuring prolonged protection.

Chemtex Antiscalant Chemicals can be directly dosed into the feeding system, and reduces the usage of acid usage. The exact dosage rate varies depending upon the severity of scaling, and typical OEM recommendations.

The composition and physico-chemical nature is tailor made to suit the specific nature of the problem enquired. Depending upon a number of co-related factors that help improve the workability of the system, also inhibiting the accumulation of inorganic salts that forms scales. Common compounds that are used in formulating an antiscalant are polyacrylic acids, polymaleic acids, organophosphates, polyphosphates, phosphonates, anionic polymers, etc.

The most likely mineral contaminants that poses threat to any metallic system are Calcium carbonate, Calcium sulphate, Strontium sulphate, and Barium sulphate.

• Boiler Antiscalants are multi-purpose heavy-duty chemicals designed to remove rust, hard deposits of water scale, iron oxides, oily contaminants, lime and greasy deposits from boiler systems. Regular usage of these chemicals provide protection to system metallurgy, ensuring an optimally longer boiler life cycle.
• For Reverse Osmosis systems, various formulations were evolved depending upon the type of membrane, quality of feed water and rate of product recovery;
  • Use of high pH RO antiscalants to inhibit scales and disperse colloidal particles in cellulose acetate and thin-film membrane separation systems, stable over a wide range of supersaturated salt solution. It prevents precipitation on the membrane surface, reducing the risk of scaling and helping in effective plant operations with optimal recovery rate.
  • Neutral RO antiscalants reduces membrane fouling within separation systems, effectively controlling inorganic salts, metal hydroxides, and colloids in RO feed water
  • Application with low pH antiscalants eliminate inorganic scales in multiple applications areas. It stabilizes metal ions to prevent metal oxides precipitation and disperses silt and clay particles.
• Thermal Desalination Antiscalant, new formulation is precisely formulated in order to provide excellent control of scaling & fouling. On regular application, it ensures reduced cleaning frequency and thorough cleaning.

 General Key Features & Benefits:

• Excellent cleaning efficacy
• Wetting agent for scale penetration
• Excellent removal of oil and grease
• Inhibitor package to prevent corrosion
• Excellent de-rusting

Chemtex Speciality Limited manufactures a wide range of antiscalant chemicals used for the purpose of deterrence of scaling and elimination of inorganic deposits over a broad spectrum application.

For more information, please visit: www.water-chemicals.com

Water Sanitation and Hygiene; Improving Water, Improving Life!

In recent times, wastewater definition need not any formal introduction, we all know about the what’s’ and the why’s. The question arises for how, where we chug in. Unhealthy for human consumption! No doubt, but deemed unusable, rather not. This water treated safely can have a fair amount of applications.

Wastewater has to be treated before release because it has been adversely affected by domestic, commercial, agricultural or industrial uses, which has serious implications in the environment. The composition of wastewater varies as its’ sources, ranging from mildly polluted storm water runoff to toxic wastewater from chemical, pharmaceutical, and metal industries.

Water Sanitation is a process to purify contaminated water which otherwise cannot be utilized further, thereby making it reusable. Pathogens, organic and inorganic matter, suspended solid, dissolved gases, paint emulsions, toxic chemicals like pesticides, bio-solids, and many more unwanted substances interfere with the quality and need treatment to make it reusable, since water is a limited resource.

According to a survey report, about three-fifth of total water in India was found to be toxic and of no use.

Scarcity of freshwater supply has driven urban and rural farmers to treat waste water from all possible sources which is regularly contaminated with untreated domestic and commercial wastes. Immobile places of water, including streams, tanks, and pipelines generally get contaminated or polluted because of the convergence of urbanization and unplanned utilization. Untreated wastewater utilized for watering system poses potential risk to wellbeing of both consumers and irrigators, and wastewater sanitation concerns need to be satisfactorily attended.

Most common practices carried out to prevent water from being contaminated are:

• Safe techniques to use waste water
• Checking the outflow of industrial wastes into water sources like rivers, ponds, etc.
• Preventing contamination of crops with chemicals and or pathogens
• Preventing contamination of drinking water sources
• Managing water and crops to prevent expansion of vector borne diseases

Wastewater sanitation/ treatment are broken into three levels, or in other words, there are three stages of treating waste water.

• One treatment involves the removal of unwanted, suspended or dissolved solids from crude sewage. This treatment traps strong objects and sediments using gravitational force to evacuate suspended solids.
• Another follow up treatment expels the already dissolved organic matter that may have missed out on the first essential treatment. This is accomplished by microorganisms thriving on the organic matter as food, and changing it over to carbon dioxide, water, and energy for their growth and development.
• Final treatment cleans as well as disinfects relatively considerable number of polluting influences from sewage, producing effluent of water through routine chemical treatment.

Chemtex Speciality Limited is one of the leading manufacturers of Water Treatment Chemicals, meeting all the standard industrial and commercial needs and requirements.

Visit us at www.water-chemicals.com

RO Membrane Cleaner is flawlessly used for cleaning of RO membranes

Reverse Osmosis (RO) can be viewed as the procedure by which demineralization and deionization of water happens by making it go under pressure through a semi-permeable reverse osmosis membrane. Keeping in mind the end goal to do the filtration of intensely grimy water, reverse osmosis membrane is utilized which is for the most part brings some significant issues that may cut down the productivity of the membrane, for example, Scaling, Degradation and Fouling of RO membrane.

Fouling of RO membranes may be operationally viewed as the reduction in water transport per unit zone of layer (flux), achieved by a substance or substances in the feed water that total assemble on or in the film. Water has a tendency to diffuse through the film quickly, yet the dissolved and suspended particles in the water don’t diffuse through the layer promptly, so they stay at the feed water surface. These materials summon a decrease in limit and/or an improvement of the pressure and, subsequently, of the energy use. It is, in this way, fundamental to preventively filter the layer. By and large general gentle cleaning is superior to anything cleaning intermittently with an aggressive cleaning item which offers the layer some assistance with lasting longer.

Utilizing high quality RO Membrane Cleaner is an imperative part of any Reverse Osmosis plant maintenance program. It is profitable to clean layers at early phase of fouling, as irreversible harm can occur when cleaning too much fouled films. Cleaning of reverse osmosis membranes ought to be done when one or a greater amount of the principle (standardized) working parameters, for example, conductivity, flux, or pressure differential, changes by 10 – 15%. It may get difficult to recoup plant execution by routine cleaning methods when execution decays by 30-40% (or more).

RO Membrane Cleaner is flawlessly used for cleaning of RO membranes by the evacuation and dispersal of the deposited scale. These cleaners have been judiciously treated by utilizing propelled procedures and premium grade constituents in order to guarantee powerful cleaning of contaminations, for example, sludges, silica scales, oils and natural mixes. These cleaners are appropriate to exhibit excellent system clean up, exact pH quality, ease in evacuation of soil, evacuation of silica scale, and so forth. Contingent on the sort and level of fouling of the layer, cleaners can be chosen, for example, Low pH membrane cleaner, High pH membrane cleaner, Cleaner for Silica Fouled membrane, and so on.

RO Antiscalant aids in ensuring beyond 80% reduction in scaling tendencies

Reverse Osmosis (RO) can be referred to as the process in which demineralization and deionization of water occurs by forcing it under pressure through a semi-permeable reverse osmosis membrane. For filtration of the heavily soiled water, using of the reverse osmosis membrane is accompanied by some critical issues that may bring down the productivity of the membrane. Generally, there are three major concerns that needed to be dealt with namely – Scaling, Degradation, and Fouling of RO membranes.

These problems show the tendency to reduce the system productivity because they reduce wastewater purity. Scaling takes place on RO membranes when the scale-forming substances concentration exceeds saturation, producing added solids within the RO feed water. Chemical substances that are included under scalants are calcium carbonate, calcium sulfate, strontium sulfate, barium sulfate, and reactive silica. These substances are hard to be removed from RO membranes on account of their low soluble nature. Scaling abates the efficacy of the membranes in decreasing the solids concentration and causes more frequent cleanings.

To avoid facing these kinds of circumstances, the RO Membrane should be treated with Antiscalants prior to the initiation of the process of Reverse Osmosis. RO Antiscalant functions as a liquid antiscalant for treating the RO membrane system. The range of RO Antiscalant includes Low pH, High pH, Neutral pH, High Silica RO Antiscalant, etc.

RO Antiscalant aids in ensuring beyond 80% reduction in scaling tendencies when used continuously. RO Antiscalant helps in controlling the inorganic scales of magnesium, barium, calcium, strontium, iron, fluoride and silica. It serves as a very effective antiscalant for waters with LSI upto +2.7, Silica upto 175ppm (or mg/l), Iron upto 1.4ppm in reject, High SDI. Reverse Osmosis Antiscalant keeps capacity of RO close to design, and helps in minimizing membrane cleaning cost and shutdowns. It accounts for effective scale inhibition with high recovery rate. It is potent at low chemical dosage. RO Antiscalant efficiently controls Iron fouling by sequestration thereby reducing the frequency of membrane cleaning.