Drinking water treatment

Reliable and cost-effective disinfection system produces chlorine dioxide safely and efficiently. Gas and acid-based production technologies, high chlorine dioxide generation efficiency, low chlorine residual. HAZOP study conducted. Easy to use with low maintenance and operating control. Ideal for drinking water treatment, disinfection in cooling circuits, process and waste water as well as swimming pools.

An on-site integrated system which produces oxidants from salt water feed for disinfection of water. The electrolytic cell is at the heart of the system and the disinfectant is produced by electrolysing salt solution. Designed for continuous operation, except during cleaning and maintenance, it can produce a maximum of 0.8 kg mixed oxidants. Ideal for drinking water treatment, swimming pool treatment and applications in industrial process as well as cooling water treatment.

Range of products varies from small lab generators generating 4 gm/h to large XF generators generating over 97 kg/h from a single unit. The product range also includes innovative ozonators for high purity application which generates ozone from pure water. The range also includes containerised ozone generator system capable of generating over 250 kg/h.

Wide range of speciality UV systems includes low and medium pressure UV systems for applications ranging from general water disinfection and drinking water disinfection to high purity water disinfection, TOC reduction and deozonation.

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 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.

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.

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.

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 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.

Automatic valveless gravity filter (AVGF) operates automatically, on the loss of head principle – generally accepted as the most accurate control besides the constant analysis of the filtered water turbidity, which is seldom practical on a continuous basis. The head loss at which AVGF initiates backwashing is determined by the height of the inverted U-turn at the top of the backwash pipe. The level of water in this pipe is proportional to the head loss across the filter bed.