Water Supply scheme under Sepahijala District/SH Operation Maintenance and upkeepment of 0.55 MGD Capacity of SWTP at Srimantapur under DWS Sub-Division Sonamura during The year 2026-27 (Materials Component) (Gr-1)

Providing and applying of different chemicals for production of quality treated water as per guideline of WHO/ BIS parameters.

i)Alum (grade-1) in/c 15-16% alumina content.1X110X270days=29700.00 kg (Dose=45mg/litre)

ii) Hydrated Lime(Grade-I)(Dose=12mg/litre) 1X36kgX270days=9720.00 kg

Providing and mixing bleaching powder grade-I, active chlorine should be minimum 33% (16 hours operation) X 30 days in/c applying, loading and stacking etc. complete in all respect as per direction of the Engineer-in-Charge. 1x.12 kg/day x 240 days = 2880 kg (Dose=8mg/litre)

Providing salt for generation of chlorine solution (hypo) as per direction of the Engineer in Charge 1x25 kg/day x 240 days = 6000 kg (Dose=12mg/litre)

i) 80 mm dia. PN- 1.6

iii) 150 mm dia. PN- 1.6

iii) 200 mm dia. PN- 1.6