BID DOCUMENTS FOR EPC WORK FOR CONSTRUCTION OF 2.0 MLD WATER TREATMENT PLANT WITH 2 YEARS OF OPERATION AND MAINTAINACE AT RAJMAHEL ROAD, DHARAMPUR NAGARPALIKA,DHARAMPUR

TOTAL AMOUNT PUT TO TENDER

TOTAL AMOUNT RS.

Name of Work : Conventional Water Treatment Plant

Qty Units Description of Item for Turnkey Tender Rate (Rs.)

1 Conventional WTP

Designing (hydraulic, process, structural and

aesthetic),constructing and commissioning Conventional

Water Treatment Plant consisting of all Civil, Mechanical

and Electrical components of various sub-works as given

below including necessary hydraulic testing, structural

testing, equipment testing, trial run for 3 months, etc.

complete as directed by Engineer-in-charge (turn-key job).

1.1 Aeration Fountain/Casecade Aerator

1.2 Ventury Flume/Partialflume

With necessary flow measuring devices/meter consisting of

mechanical/digital indicator.

1.3 Flash Mixer

Rapid mixing device design confirming to IS : 7090 of

1985.Detenion time 60second, velocity gradient 300-400

sec-1 with fans gear and motor assembly as per design.

1.4 Flocculator

Design confirming to IS : 7208 – 1974 (Type-C) .

Detention period 30miutes with flocculator paddles

with gear and motor assembly as per design .

Circular tank with horizontal flow pattern, detention

period 2.5 hours, overflow rate 30 cubic meter per square

meter per day (to be specified), Weir loading not more

than 300 cubic meter per meter per day, with mechanical

sludge scraper confirming to IS : 10313 – 1982 and bridge

as per design with gear and motor assemblies.

1.6 Rapid Sand Filters and Filter House

Filter designed for filtration rate of 6,000 liters per square

meter per hour, minimum 2 beds for plant up to 10 MLD,

for larger plants as specified, pipe gallery and platform

minimum 5.5 meter in width.

Effective size 0.45 to 0.70 mm, uniformity coefficient not

more than 1.7 nor less than 1.3, depth of sand 0.75 M,

free board 50 cm, gravel 0.45 M in depth, sand and gravel

confirming to IS : 8491 (i) – 77, backwash by air wash(if

specified) and hard wash by water, standard

appurtenances (to be specified), rate of flow controller,

filter gauge, sand expansion gauge, etc.

b) Wash Water Tank

Capacity to be specified and suitable to supply water to

wash 2 filter units at a time where the units are 4 or more.

c) Wash Water Pumps

Capacity to fill water tank in 1 hour with 100% standby.

Capable of delivering 600 LMP per square meter of free

air, of filter area with pressure@ 0.4 kg/square cm at the

underdrains (100% standby).

e) Valves/gates

Inlet, outlet ,wash water inlet –outlet and all types and

sizes of valves /gates as per design of specified

f) Gauges/meters

All types gauges and meters required for filter operations

and backwashing etc. as per design of specified

1.7 Chemical House in Two Storyes (floor wise area as

Ground floor to accommodate 7 days alum requirements

a) Sundry storage

b) First floor to accommodate alum and lime tanks, etc.

c) Solution Tanks

Minimum 3 tanks (one for preparation, second for dosing

and third as standby), each tank capable of giving 8 hours

maximum dose without interruption, minimum free board

0.30 M, trays for dissolving, level indicator, mechanical

agitation devices, solution feed and drain lines, solution

feed device (constant head device, strength of solution up

to 10% only) confirming to IS : 9222 Part – 1/1979.

1.8 Store House (area as specified)

Suitable for alum storage of three months requirement in

monsoon with 10% extra capacity for other sundry articles.

1.9 Vacuum feed type Chlorinators – make to be specified and

approved by GWSSB.

a) Confirming to IS : 10533 – A Part – 2/1983.

b) Rate of withdrawal

Temperature Degree C

(Kg of Chorine Discharge per day Cylinders)

Chlorinator equipment and container room to confirm to

d) 100% standby shall be provided.

1.10 By pass arrangements – C.I. or M.S. pipes( as specified ) of

size as per design

Drainage arrangements – RCC pipes up to plot boundary (as

specified ) diameter as per design.

1.11 Electric installation.

Both internal and external including entire plant area (as

1.12 Laboratory equipments

As per requirement (to be specified during tendering).

1.13 Sanitary blocks.

Carpet area – 15 square meter minimum up to 25 MLD and

25 square meter above 25 MLD (or as specified).

1.14 Administrative block and internal roads.

To accommodate office room, chlorine room, laboratory

room, panel board room, blower room etc. and asphalt

road to connect all units from main gate of plot As per

Approved Design & drawing and As directed by Engineer in

1.15 Dewatering during entire work using any technique.

(1)Conditions from Sr. No. 2 to 2.16 shall from a part and

parcle of the tender and must be incorporated in draft

tender papers of conventional treatment plants.

(2)The necessary changes should be carried out as per Site

condition and project requirements at the time of

preparing DTP’s Inlet chamber can be dropped when

Aerator is proposed otherwise it should be included.

(3) Hydraulic design criteria approved by Technical

committee shall be reffered and item description shall be

modified accordingly.

(4) Structural design criteria approved by technical

committee shall be applicable for design.

(5) Design flow shall be specified in M^3/hour in data

sheet considering 22 hours WTP run time in a day to treat

requirement water quantity of a day( i.e. 24 hours) of

population to be served with design rate of water supply.

No separate overloading provision shall be kept in any

(6) All other details shall be as per design criteria and

detail specifications and as directed by Engineer in Charge.

(7) The following rates are for sites falling in seismic zone

III . For sites falling in Zone IV and V rates shall be

increased 5% & 8% respectively.

(8) The rates includes excavation ,refilling and throwing

away extra stuff as directed.

(9) The following rates are for preliminary or rapid

estimate of WTP

1 MLD 2 Capacity of WTP in 2 MLD 2814771

NET BASE COST (Rs.)

Add for Labour Cess 10%