Chempure Technologies Private Limited

Chempure offers DM plants for producing high quality water for high pressure boilers and process applications.

BASIC PROCESS

A standard dual bed ion exchange unit consists of a strong acid cation resin that exchanges hydrogen for positively charged cations present. The second step is a strong basic anion resin that exchanges hydroxide for negatively charged anions present in the water stream. The hydrogen (H+) from the cation exchanger and hydroxide (OH-) from the anion exchanger create the HOH or deionized water to be reused in the process.

There are certain processes that generate an abundance of either a cation or an anion. If this occurs, a more selective weak acid cation can be used to exchange the multi-divalent heavy metals that are in abundance. This “pre-treating” of the heavy metals will assist in the exchanging of the mono-divalent cations. A weak basic anion before the strong basic anion can be implemented to assist in better deionizing the water fed back to the process.

The cation ion exchange resin is regenerated with an acid to exchange the hydrogen back onto the cation resin beads. The anion is regenerated with sodium hydroxide to exchange the hydroxide back onto the anion resin beads. The cost and wastewater associated with the regeneration of the ion exchange media is minimal.

ION-EXCHANGE RESIN TECHNOLOGY
Demineralisation –  Polishing

APPLICATIONS

• Production of  demineralised and high purity feedwater for steam generators
• Polishing Units for condensate recovery in high performances thermal cycles;
• Production of high purity, demineralised water for pharmaceutical applications
• Demineralisation processes for food industry.
• Systems for removal of heavy metals from washing water in the metals finishing industries

MIXED-BED DEMINERALIZER

Chempure designs MB units to remove cations and anions (minerals) from water. The term mixed bed demineralizer describes a unit with a thoroughly mixed blend of both cation and anion resins contained in one tank, thus providing the effect of thousands of small two bed units. The MBS-Series can produce water with an effluent quality of 1.0 to 18.3 megohms-cm, and a silica level of 0.10 ppm to 0.01 ppm as CaCO3.

The Basis of Mixed-Bed Exchange :

In many of today's treatment processes, mixed bed ion exchange plays an integral role. The ions in water can reduce to very low concentrations by exchange with two different ion exchange resins - one charged with hydrogen ions and the others charged with hydroxyl ions. The exchange results in the formation of water. Efficiency of such a system is enhanced when mixing is used. As a hydroxyl ion is released, it helps drive the exchange of a nearby site to produce the ion for the reaction to water.

Many treatment processes incorporate mixed bed ion exchange with the use of synthetic ion exchange resins, usually cast as porous beads with considerable external and pore surface where ions can attach. An ion exchange resin is a polymer with electrically charged sites at which one ion may replace another.

 

The Hydro-Pure® series deionizers offered two stages both co-flow and counter-flow deionizers for the applications in different industrial process. These systems are available in a versatile range of outputs from 1.0 m3/hr to 90 m3/hr.  

The co-flow (HTS) range is developed to produce a cost-effective supply of good quality deionized water to meet a wide spectrum of customer needs. Particular emphasis has been placed on ease of operation, maintenance and service, plus features which enable users to easily check how the unit is performing.


The counter-flow (HCI) system is adopting an improved technique, which better water quality can be produced by these units. By using HCI system, a higher working capacity can be obtained from the ion exchange resin for a given regeneration level. Waste water is minimized, and the reduced volume of volume of water required during the regeneration cycle, together with the use of smaller effluent neutralization facilities, result in cost savings.

The range of Hydro-pure deionizers are skid mounted packaged units which are pressure tested and semi-commissioned before delivery. This considerably reduces installation time and the overall capital cost of plant.

The counter-flow (HCI) system is adopting an improved technique, which better water quality can be produced by these units. By using HCI system, a higher working capacity can be obtained from the ion exchange resin for a given regeneration level. Waste water is minimized, and the reduced volume of volume of water required during the regeneration cycle, together with the use of smaller effluent neutralization facilities, result in cost savings.
The range of Hydro-pure deionizers are skid mounted packaged units which are pressure tested and semi-commissioned before delivery. This considerably reduces installation time and the overall capital cost of plant.
 

Features	Benefits	Option
Designed for cost-effectiveness and efficiency in ion exchange. Skid mounted Packaged Plant. Co-flow or counter-flow regeneration Simultaneous regeneration Fully or semi-automatic.	Competitive capital & running cost. Low installation cost and time. Higher quality water or lower costs on different requirement.  Cut down the outage time and less storage space is required. Reduced operator involvement.	Pre and post treatment. Duplex configuration. Effluent pH correction.  Sequential regeneration. Manual and mixed bed unit.

An iron problem is characterized by the red-brown staining of bathroom fixtures and laundry. In well water, iron usually occurs in its ferrous state. The water is clear when drawn but once exposed to air the iron changes into a ferric (oxidized) state. The water turns red and forms insoluble "rust" particles. Staining can be caused by as little as 0.3 milligrams per litre (mg/L). Depending on the iron concentration there are several solutions to this aggravating water problem.

Iron bacteria

Often an iron problem is the direct result of an infestation of iron bacteria. Although these bacteria do not present a health hazard, they stain fixtures, can clog pipes and valves, and make the water unpalatable. The best control can often be accomplished by shock chlorination. Shock chlorination is the direct treatment of a well and water system with 15 to 20 L of chlorine bleach. This strong chlorine solution is held in the well and water system for at least eight hours before being flushed out. Shock chlorination won't solve the problem permanently, but it will usually keep the bacteria in check. This procedure should be carried out before selecting iron removal equipment. Shock chlorination in spring and fall is recommended for the continued successful operation of any water treatment equipment.

Continuous chlorination of the well, using dry pellets or liquid chlorine, is another option. Occasionally this treatment may be needed when iron bacteria cannot be effectively controlled by shock chlorination.

Air injection

These iron filters use the oxygen in the air to oxidize the iron in the water. A small venturi type air injector is installed between the pump and pressure tank to draw the air into the water. The iron oxidizes to form rust particles which are then strained out by a filter. These filters have worked very well, and are presently replacing the manganese greensand filter in the market place. Some companies selling these units claim iron removal capability up to 30 ppm of iron. High iron situations often require extra equipment, such as retention tanks, air release valves, and air mixing devices.

 

Conditions for use include: adequate pump and well capacity for backwash and air injector operation, adequate time for iron to oxidize before passing through the filter, proper adjustment of the air injector.

Manganese greens and iron filter

The manganese greensand iron filter used to be the most common iron removal device. It can be used successfully for iron concentrations up to approximately 6 mg/L. Iron is oxidized by a coating on the manganese greensand. The greensand must be periodically regenerated with potassium permanganate to replenish the oxygen on the greensand.

Continued successful operation requires an availability at least 20 L per minute flow for proper backwash, pH above seven, and regular regeneration. Failure to regenerate often enough can ruin the filter media.

Water softener

A water softener will generally remove up to 3 mg/L of iron. The iron must be in the ferrous (clear water) state or the iron will damage the softener resin. Care must be taken if a softener is used to remove iron because iron tends to clog and foul the softener resin. A resin cleaning compound must be used regularly to protect the resin. The most common resin cleaning compounds contain sodium hydrosulfite or phosphoric acid. Some water softener salt contains a resin cleaner.

ACTIVATED CARBON FILTER

Activated carbon is a crude form of graphite, the substance used for pencil leads. It differs from graphite by having a random imperfect structure which is highly porous over a broad range of pore sizes from visible cracks and crevices to molecular dimensions. The graphite structure gives the carbon it's very large surface area which allows the carbon to adsorb a wide range of compounds.

What is adsorption?

Adsorption is the process by which liquid or gaseous molecules are concentrated on a solid surface, in this case activated carbon. This is different from absorption, where molecules are taken up by a liquid or gas

Activated carbon is used for the removal of dissolved components from, freshwater waste water and marine systems. Activated carbon is effective against the following;

• organics
• colour
• chlorine & bromine
• malachite green & many dyes
• ozone

Basic Principle
 
Activated carbon filter works on the principle of adsorption.

Adsorption is the process where molecules are concentrated on the surface of the activated carbon.

Adsorption is caused by London Dispersion Forces, a type of Van der Waals Force which exists between molecules. The force acts in a similar way to gravitational forces between planets.

London Dispersion Forces are extremely short ranged and therefore sensitive to the distance between the carbon surface and the adsorbate molecule They are also additive, meaning the adsorption force is the sum of all interactions between all the atoms. The short range and and additive nature of these forces results in activated carbon having the strongest physical adsorption forces of any material known to mankind.
Forms of activated carbon

There are three main forms of activated carbon.

Granular Activated Carbon (GAC) - irregular shaped particles with sizes ranging from 0.2 to 5 mm. This type is used in both liquid and gas phase applications.

Powder Activated Carbon (PAC) - pulverized carbon with a size predominantly less than 0.18mm (US Mesh 80). These are mainly used in liquid phase applications and for flue gas treatment.

Pelleted Activated Carbon - extruded and cylindrical shaped with diameters from 0.8 to 5 mm. These are mainly used for gas phase applications because of their low pressure drop, high mechanical strength and low dust content.

 

Chempure manufactures most modern, however economical Ozonators Generators for Disinfection of water treatments. The capacity of Ozonators disinfection water treatments manufactured by us ranges from 0.5 to 100 gr/hr. We provide complete assistance in application of engineering for achieving disinfection, deodorization, bleaching or reduction of BOD & COD.

We also supply Ozonators disinfection water treatments systems on turnkey basis & necessary components eg. ozonation tank pumps, recirculation pumps, ejectors and air filters.

What is ozone?

Ozone (O3) is found commonly in nature. Ozone is formed whenever lightning occurs, or when an electrical discharge creates a spark. The ozone layer in the upper atmosphere provides a protective screen against dangerous solar radiation. 

The generation of disinfection water treatments Ozonators is a relatively simple process. Air, dry air or oxygen is drawn into our patented ozone generators, at which point the air is charged with high voltage. The air is made up of diatomic oxygen (O2) and nitrogen (N2) . Diatomic oxygen is a molecule composed of two oxygen atoms (O) held together by four equally shared electrons. As the air is drawn through the ozone generator, the high voltage splits some oxygen molecules into oxygen atoms. Some of these atoms then quickly react with oxygen molecules to form ozone: (O1) + (O2) = (O3)

Ozonators disinfection water treatments is second only to fluorine as the most powerful oxidant. Ozone inactivates and oxidizes organic metals and most organisms faster than chlorine. Ozone also functions as a micro flocculating agent to "polish" the water and improve clarity (clarifying iron, sulphur and manganese).

Ozonators Applications

1. Water Disinfection treatments eg. Mineral water, Drinking water, Process water cooling & Swimming pool water. 2. Disinfection of Food items for enhanced shelf life. 3. Treatment of Dairy products, Preservation of fruits. 4. Meat & Fishes 5. Aqua Farming 6. Deodorization & Disinfection of Air 7. Sterilization of Packing areas, Food processing-plants & Clean Rooms 8. Effluent Treatment & Bleaching

In Waste Water Treatment

Ozonators is an effective disinfectant for treating municipal and industrial wastewaters. At dosage levels of 5 to 12 mg/l, secondary and tertiary treated effluents can be disinfected to total bacterial concentrations of less than 3/1000 ml.

Ozonators also removes organic-based color, phenols, and cyanides that may be found in both municipal and industrial waste streams

Ozonators provides a major side benefit, when compared to other disinfectants, in limiting the nature, type and quality or quantity of by-products produced.  This is particularly true of AOX.

PACKAGE DRINKING WATER SYSTEMS

Chempure offers a one stop solution for package drinking water projects. Chempure provides a turnkey solution for the water treatment and the bottling sections. Chempure supplies automatic bottling plants for cans, bubble tops and pet bottles.

OUR TURNKEY PACKAGE INCLUDES :

• Design,  engineering and supply of pre-treatment section.
• Design, engineering and supply of Reverse Osmosis plant.
• Design, engineering and supply of Post treatment section such as ozonation.
• Design, engineering and supply of bottling plants.
• Design, engineering and supply of conveyor systems.
• Design, engineering and supply of packing and labeling systems. 
• Installation and training of your personal.
• Setting up of lab as per standards.
• Hygiene and safety procedures training.

Chempure Technologies Pvt. Ltd. offers commercial Desalination reverse osmosis (RO) plants with the smallest reverse osmosis (RO) plants plant ranging from 10 LPH to 50000 LPH with highly reliable components and prompt after sales service

REVERSE OSMOSIS PLANT - APPLICATIONS

• Houses
• Hotels
• Restaurants
• Apartments
• Hospitals
• Hemodialysis
• Package water manufacture
• Laboratories
• Pharma
• Ice manufacturing
• Soft Drinks

INSTRUMENTS

• Pressure switch
• Flow meters
• TDS meter
• Pressure gauges

LIMITING  CONDITIONS

• Feed TDS  2000 ppm
• Iron <0.1 ppm
• SDI < 5

STANDARD SCOPE & FEATURES

• 5M pre-filter
• PP cartridge Housing
• TFC membranes
• PVC membrane housing
• SS High Pressure pump
• High/Low pressure piping

The Smart U.V. Sterilizer is the ONLY guaranteed method for complete elimination of Green Water (Water-Borne Algae) with proper use.  The U.V. sterilizer produces ultraviolet radiation energy. 

When microorganisms such as algae are exposed to this U.V. radiation, they are quickly and efficiently destroyed.  Proper selection and installation are critical to the performance of any U.V. Sterilizer.  Emperor Aquatics Smart UV Sterilizers are available in seven sizes from 12 watts through 130 watts.   

Compare with other UV sterilizers :

• Durable stainless steel construction
• Limited lifetime warranty on ultraviolet housing
• Single lamp makes replacement affordable
• UV lamps last up to 7000 burning hours
• Easy accessibility to internals for periodic maintenance
• Designed for maximum flow rates
• Easy installation and ideal for space limited situations
• Works with low flow systems as well as pressurized systems

Our water softeners ion exchange technology removes calcium, magnesium and limited iron from water for residential, commercial, and industrial uses. These systems have a proven excellence in performance. Water softeners are sized to fit your needs for soft water within your budget. All softeners are shipped directly from the factory to your home or business.  

The Benefits

Water Softeners will allow you to use less soap and detergent, saving the environment and saving you money.  In addition,  Softeners prevents the build-up of harmful mineral scale, adding years of service life to pipes, appliances and hot water heaters, thus paying for itself in the short and long term.

The Process

The heart of a water softeners is a mineral tank. It's filled with small polystyrene beads, also known as resin or zeolite. The beads carry a negative charge.

Calcium and magnesium in water both carry positive charges. This means that these minerals will cling to the beads as the hard water passes through the mineral tank. Sodium ions also have positive charges, albeit not as strong as the charge on the calcium and magnesium. When a very strong brine solution is flushed through a tank that has beads already saturated with calcium and magnesium, the sheer volume of the sodium ions is enough to drive the calcium and magnesium ions off the beads. Water softeners have a separate brine tank that uses common salt to create this brine solution. 

In normal operation, hard water moves into the mineral tank and the calcium and magnesium ions move to the beads, replacing sodium ions. The sodium ions go into the water. Once the beads are saturated with calcium and magnesium, the unit enters a 3-phase regenerating cycle. First, the backwash phase reverses water flow to flush dirt out of the tank. In the recharge phase, the concentrated sodium-rich salt solution is carried from the brine tank through the mineral tank. The sodium collects on the beads, replacing the calcium and magnesium, which go down the drain. Once this phase is over, the mineral tank is flushed of excess brine and the brine tank is refilled.

 

APPLICATIONS:

• Production of softened feed water for steam generators
• Production of high purity, softened  water for pharmaceutical applications
• Softening, processes for food industry
• Laundry systems
• Ice making