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| Services |
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| 1. Greenfield or new water treatment plants based on Tube Settler technology / clarifiers read more... |
| 2. Single or multimedia gravity filter beds. read more... |
| 3. Complete water treatment systems and Water supply schemes read more... |
| 4. Augmentation or retrofit of existing plants for capacity or quality up-gradation read more... |
5. Mass application of small capacity standardized plants
read more... |
| 6. Sewage Treatment Plant. |
| 7. Project Management Consultancy. (PMC).. |
| 8. Civil, Structural, Electrical & Automation Engineering design & drawings. |
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| Research Paper & Presentation |
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Case Studies
Manchar, Dist. Pune, Maharashtra |
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| Introduction : |
The existing water treatment plant at village Manchar (50 km from Pune, on Nashik highway) was constructed in 1990 by Maharashtra Jeevan Pradhikaran (MJP), then the statutory body of Govt. of Maharashtra. The capacity of existing plant was 2.88 MLD and it consisted of a Receiving Chamber, mixing channel, Horizontal flow settling tanks (2 compartments) and two rapid sand gravity filters. The plant was constructed in UCR masonry with wall thickness of about 3 ft at the bottom. No proper mixing and flocculation facilities were provided in the plant. The filter beds had stopped functioning as the media had got carried away.
In 2002 it was decided to increase the capacity of water supply scheme up to 3.84 MLD (160 cum/hr). The existing settling tank of size 4.8m x 13.5m (2 compartments) was retrofitted with tube settlers. Each compartment was augmented to produce 1.92 MLD water. The outlet zone of settling tank (4.8m x 3.6m) was converted in tube settling zone by constructing a RCC partition wall. The surface loading provided was 5000 lph/sqm. The tube modules consisting of tubes 50mm x 50mm and 600 mm length were supported by installing beams of structural steel. Collection troughs were provided at the top to collect the clarified water.
The inlet portion of each settling tank (4.8m x 4.0 m) was converted into flocculation zone by constructing another RCC wall. The electrically operated mechanical agitator was supported by a walkway by installing structural steel girders. The detention time provided was 30 min.
A new cascade aerator and a mixing weir of 3.84 mld was constructed as preceding unit to settling tank at appropriate elevation to convey the water by gravity to settling tank. The existing two filter beds (2.88 MLD) were refurbished by replacing filter media and filter under drain system. One new filter bed of 1.0 MLD capacity was constructed to have a combined filtration capacity of 3.84 MLD. The new filter bed was designed to use the existing backwash water tank. A new pipeline was laid to convey the filtered water to existing Pure Water Sump. A small new two storeyed Chemical House was constructed near the Aeration Fountain to dose the Alum by gravity to mixing weir. Bleaching powder (Calcium Hypochlorite) dosing system was constructed as post-chlorination facility. All the old and new units were integrated by providing connecting walkways. The augmented plant was commissioned in 2004 at 50% of the cost of new plant. In the process the all existing old units got rejuvenated too.
Augmented Settling Tank 
New Cascade Aerator
New gravity Filter bed 
New Chemical House and store
A 360 degree view of Manchar WTP complex
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