Ref: Schedule of Rates MJP Pune Region 2012-2013
Designing (aesthetically), providing,constructing and giving satisfactory trials of modernised Sewage Treatment
Plant consisting of receiving chamber, screen chamber, grit chamber,measuring flume, distribution chamber
with primary and secondary treatment,etc., administration block of suitable size including allied
units for waste disposal with all civil and mechanical works involved, etc. complete (turn key job).
Primary treatment - with extended sludge drying beds constructing and giving satisfactory hydraulic testing, commissioning and giving satisfactory trials of modernised Sewage Treatment Plant consisting of inlet chamber, screen chamber, detritus tanks, parshall flume, primary settling tanks, aeration tanks, secondary settling tanks, sludge sump and pump house, sludge thickener, primary digester, secondary digester, SST sump and pump house, chlorine contact tank, chlorinators, chlorinator room, sump cum blending tank, PST sludge sump cum blending tank, pump house, sludge centrifuge, gas holder, necessary piping work with required valves, gates, drains, pathways, administrative building cum laboratory, laboratory equipments, tools and plants, spare parts, etc. complete as turnkey job with all involved civil,electrical and mechanical works inclusive of following items, units as per detailed specification for civil, electrical and mechanical components with all duties and taxes, etc. complete.
Inlet Chamber
Designing, providing and constructing RCC (M-300) inlet chamber designed for the peak flow 2 DWF including
necessary excavation in all types of strata including walkway around the periphery. Each compartment will have
phosphor bronze, steel gate with extension rod, head stock, operating wheel, G.I. pipe railing, etc. The work
includes providing and making necessary arrangements to connect the flow to screen chamber by approach channel as directed and as per specifications.
Screen Chambers
Designing, providing, constructing,testing and commissioning screen chamber designed for average 1 DWF
and maximum 2 DWF in RCC (M-300) including inlet pipe/ channel from inlet chamber, outlet pipe/ channel to detritus
tank, free board of 0.50 M minimum, RCC walkway 1.2 M wide with G.I. pipe railing, RCC staircase of 1.2 M width from GL to screen chamber.
Detritus Tank
Designing, providing and constructing continuously grit removal type of detritus tank, mechanically operated in
RCC (M-300) capable of removing 100%, 0.20 mm size particle and above having specific gravity 2.30 designed for
one peak 2 DWF with suitable arrangement of separation of grit from putrescible solids including providing
and making necessary arrangement of JB-1 inlet and outlet channel of required sizes as may be required to connect the
flow to parshall flume, etc. complete including hydraulic testing for water tightness of the structure having minimum free board of 0.30 M washout arrangement to grit chamber and platform 1.20 M wide RCC walkway
with G.I. pipe hand railing shall be provided. A pit for collecting grit conveyed by conveyor shall be provided.. It should be suitable to handle the grit for carting. All arrangements shall be as per detailed
specifications and as directed
Parshall Flume
Designing, providing and constructing parshall flume channel in RCC (M-300) for measuring quantity of sewage
received at the treatment works, max.flow of 2 DWF and minimum flow of ½ DWF including providing and making
necessary arrangement of approach channel as may be required to connect the flow having minimum velocity of 0.3
M per second to distribution box (DB-1) The unit shall be provided with walkway and RCC staircase having width of 1.20
M each etc. complete, including hydraulic testing for watertightness of the civil structure having free board of
0.6 M including electrically operated, flow indicating and flow integrating devices having a standby of float operated ROF meter. All arrangements as per specifications.
Primary Settling Tanks with Equipments
Designing, providing, constructing and hydraulic testing in RCC(M-300) watertight primary settling tanks of 1 DWF capacity with feed chamber,sludge and effluent chamber, base adequately supported, providing 1.20 M
wide clear peripheral and approach walkway inter connecting C.I. double flanged pipes from feed chamber of the
clarifier distribution well, grouting wherever necessary,including foundation, etc. as per specifications,
water depth at outer side shall be minimum 3.0 M, weir loading shall not be greater than 125 cum, DWF for
average flow, bottom slope shall be 1:12.
The floor of clarifier shall have 40 mm thick (min.)screed course of cement grout of mix in CM 1:2 detention period
shall be 2.25 hrs. dispersion box and stiffened weir plate made of mild steel plate not less than 8 mm thick, anti-
corrosive epoxy paint on both faces shall be provided. Minimum free board of 0.50 M be provided. It includes inlet
pipe from distribution chamber, central shaft, inlet baffle, outlet chamber, scum remover, skimming device, scum
chamber, connecting channel from PST, outlet chamber to DB-2 as per detailed specifications.