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Drinking-water-treatment

Filtration

Multi Grade Filter / Pressure Filters

Multi grade filter is a depth filter that makes use of coarse and fine media mixed together in a fixed proportion. This arrangement produces a filter bed with adequate pore dimensions for retaining both large and small suspended particles. This filter performs at a substantially higher specific flow rate than conventional filters. Specific flow rates of 15 – 30 m/h have been successfully obtained for treating water containing 25 – 50 ppm suspended solids to produce filtrate with less than 5 ppm.

Activated Carbon Filters

Wide range of activated carbon in granular, powder and extrudate forms. These low leachability products are effective in reduction of oil & organics, decolourising and deodourising.

Continuous Sand Filter

Continuous upflow filter can filter influent containing up to ten times more dirt than a conventional filter. This revolutionary sand filter does not require to be backwashed to keep the filter bed clean as the sand bed is continuously cleaned and regenerated by internal recycling. This ensures uninterrupted operation without stopping for backwash. The continuous operation results in a constant and low pressure drop. Maximum clean filtrate is assured since the filter bed always contains a certain amount of solids which improve filtration. This mode of operation also enables the filter to accept a highly polluted flow with high efficiency. The unique cleaning method means backwash water storage tanks and backwash pumps can be dispensed with.

Clarification

Ultra High Rate Clarifier

 Compact, efficient, low cost clarifier combines technologies and advantages of solids contact clarifier and lamella clarifier, with enhanced performance at increased rise rate.

Combines mixing, reaction-flocculation, clarification, and sedimentation/sludge removal and recirculation in a single treatment  basin for maximum treated water production in minimal space. Handles high inlet suspended solids load upto 3000 ppm while giving consistent treated water quality of <20 ppm.

High Rate Solids Contact Clarifier

High performance clarifier incorporates design of internal solid recirculation, optimising chemical consumption and making it more economical than conventional clarifiers.  Works on principles of coagulation/flocculation and hydraulic separation to produce clarified water of the highest quality; flash mixer, flocculation and thickener mechanism are inbuilt.  They reduce chemical requirement, save space and are easy to operate.

Lamella Clarifier

Series of inclined plates (lamellae) achieve effective solid-liquid separation.  Large settling surfaces concentrated within relatively small floor area, so for same liquid flow, occupies 1/10th footprint of conventional clarifier. Laminar, stable flow and excellent effluent quality; modular design, no moving paths, removable plates can be lifted easily and cleaned with operation shutdowns.

Membrane Processes

Ultra Filtration Systems

A tangential flow, pressure driven filtration process that separates particles on the basis of their molecular size. Pore diameters of ultrafiltration membranes are in the range of 10 to 200 A (0.001 to 0.02 micron). Solvents and species having a diameter smaller than the pore size of the membrane will pass through the membrane and emerge as ultrafiltrate known as permeate. Rejected species are progressively concentrated in the retained stream. Ultrafiltration membranes are reusable and cleanable with standard chemicals.

Reverse Osmosis Systems

INDION series of reverse osmosis are field proven, highly reliable and cost-effective answer to treat a wide range of brackish water. Designed with flexibility, the series utilises state-of-the-art spiral wound reverse osmosis membranes to suit a given application. These systems can remove 90 - 98% of total dissolved salts.

Heat Sanitisable RO for Pharma Industry

HSRO elements, manufactured on advanced automated equipment, have the highest active membrane area in the industry. This high membrane area allows to design systems with either lower operating flux or cost savings from fewer membrane elements. The full-fit configuration minimises stagnant areas and is optimal for applications requiring a sanitary design. All components comply with FDA standards. Ideal for pharmaceutical applications.

Micro / Ultra Filtration systems

Ultrafiltration is a tangential flow, pressure driven filtration process that separates particles on the basis of their molecular size. Pore diameters of ultrafiltration membranes are in the range of 10 to 200 A (0.001 to 0.02 micron). Solvents and species having a diameter smaller than the pore size of the membrane will pass through the membrane and emerge as ultrafiltrate known as permeate. Rejected species are progressively concentrated in the retained stream. Ultrafiltration membranes are reusable and cleanable with standard chemicals.

RO EDI for Pharma & Electronics

Complete high purity water generation, skid mounted package incorporating pretreatment, reverse osmosis, electrodeionisation, UV disinfection and ultrafiltration.  Key features are hot water sanitisation, fully pre-validated to industry accepted systems, compliance with latest USP & Ph Eur specifications and GMP & ISPE design standards.

RO EDI for Power Plants

Complete high purity water generation, skid mounted package incorporating pretreatment, reverse osmosis, electrodeionisation, UV disinfection and ultrafiltration.  Key features are hot water sanitisation, fully pre-validated to industry accepted systems, compliance with latest USP & Ph Eur specifications and GMP & ISPE design standards.