1.	THE EFFLUENT TREATMENT SCHEME 

The scheme will consist of physio, biological and chemical treatment.

Process Description:

The Effluent Treatment Plant is designed to receive continuous Effluent inflow within the plant room allocated on the site plan. The ease of maintenance and operation is of utmost importance in the design of Effluent Treatment Plant.
The effluent is mainly collected from different sources and forward to equalization tank. The system work as continuous process. The effluent treatment plants have been designed on the basis of physio-chemicals treatment and biological treatment. The treatment consists of following stage:

Inlet Screen Chamber:

Raw Effluent shall flow into the inlet screen chamber by gravity. Large solids particles shall be intercepted by a fine step screen. A manual screen/mechanical bar screen shall be installed.

Oil & Grease Separator Chamber:

Raw Effluent shall flow into oil & Grease separator after screen chamber by gravity.  Where oil shall be in floated form over top layer while the Effluent shall flow through baffle valve from the bottom of chamber. In this process, utmost oil shall be removed.

Equalization Tank:

The equalization tank is designed to provide a minimum storage of 40 KL. Where the aeration is introduce through coarse bubble diffuser. Here the effluent collected & becomes equalized by aeration and proper detention time.

Chemical Treatment:

This will be a chemical process, where polyelectrolyte will be dosed through online static mixer and destabilized colloidal particles form flocs.

Primary Clarifier Tank:

The Effluent become in a colloidal form, where the biomass and suspended particles which is in colloidal form settled down in the form of sludge and collected hopper bottom of clarifier. The clear water flow upwards and collected into the break tank. 


Biological Treatment (MBBR-Technology) 

The Moving Bed Bio Reactor is having with diffused aeration system. Bio Media are being designed to achieve high surface area per given volume resulting in high specific mass transfer. The structure aids uniform growth of biological film. Micro-organism growth on the bio film convert the dissolved and ‘unsettle able’ colloidal impurities into a settle able biomass.
The waste water from the primary clarifier come to by gravity in to an aeration tank where it will be mix with living organisms also  called MLSS (Mixed Liquor Suspended Solids) in presence of air & air shall be introduced through submerged air diffusers (MLSS in aeration tank shall be maintained 3000-4000 mg/l).  The aeration system shall be designed in a way so as to achieve complete mixing of organisms with waste water. From the aeration tank this mixed liquor passes into the secondary clarifier through the use of baffles the liquid in the clarifier tank is maintained in quiescent condition which allows the solids to settle the bottom for collection . The accumulating solids known as “sludge” shall be constantly pumped back in to the aeration tank by sludge recirculation pump. This return sludge undergoes further digestion in the aeration tank & also provides the active organism needed to digest the incoming raw effluent. The clarifier shall be provided with adjustable overflow weir to collect the treated effluent & a scum baffle shall keep any floating matter from passing out in the final treated water. The treated water from secondary clarifier shall over flow into a baffled chlorine contact tank where hypochlorite solution shall be added to disinfect the treated water. Excess sludge from the bottom of the clarifier shall be transfer to sludge holding tank & pump to Drying Bed or Filter Press to make semi solids 

Chemical Treatment:

This will be a chemical process, where polyelectrolyte will be dosed through online static mixer and destabilized colloidal particles form flocs.

Secondary Clarifier Tank:

The Effluent become in a colloidal form, where the biomass and suspended particles which is in colloidal form settled down in the form of sludge and collected hopper bottom of clarifier. The clear water flow upwards and collected into the break tank. 

Tertiary Treatment:

The clear water pumped into the Multi Grade Media filter from break tank, where the remaining suspended particles trapped down and all organic compounds adsorbed through Activated Carbon Filter and Iron contains will be removed through Iron Removal Filter. Acid will be introduced in to filtered water if required.

Sludge Dewatering:

The treated wastewater will flow from the secondary to a SST for solid-liquid separation. Excess sludge generated from SST shall be withdrawn to Sludge holding Sump. The sludge from sludge sump transferred directly through sludge pump into Filter Press/SDB. The Dried solid sludge is manually removed and liquid sludge forwarded to recycle.

DELIVERY SCHEDULE 
Delivery Period will start from date of receipt of Technically & Commercially clear Purchase Order 
Drawings will be provided for approval within a week after receipt of request from you and you will Provide drawing approval within 1 week. 
In case you have any comments/observations or any change required on Drawing submitted for approval, please get back to us within 7 days else we will presume that drawings are in order and shall be released for production. Any delay in approval of drawings by you beyond one week or any time taken to redo the drawings after approval until re¬-approval, the delivery will be extended accordingly. 
Delivery starting on Ex¬ works basis 	: 	10-12 weeks	

Rs. 5000/Head/ Day (8 hours) will be charged for supervision for Erection & Commission and all accommodation (Lodging & Boarding) will be extra or  in client scope
 Though erection and commissioning is performed by client and client request from us to be present in time commissioning. is payable.
STANDARD TERMS AND CONDITIONS
SPECIFICATIONS 
Specifications, dimensions, design, description, shades of paint etc are not binding on us in minute details and are subject to reasonable alteration / change without notice. 
INSPECTION 
If necessary, the goods will be offered for inspection at our works/our supplier’s works. The date of inspection will be intimated about one week in advance. If inspection is not carried out on the date mentioned, we shall be free to dispatch the equipment as per the terms of delivery. 
If payment is not made within 15 days from the date of Performa Invoice, we reserve the right to divert the ordered material. We will give fresh delivery period and new price at the time of diversion which will be binding on the purchaser and contract cannot be rendered void on this account.  If the goods are not diverted, charges for storage, insurance and interest at 1% of the Invoice value each week/part thereof commencing 15 days from the date of Proforma Invoice will be charged. Warehousing charges are subject to a maximum of 5% of the Invoice value.
WARRANTY
The equipment supplied by us shell be warranted for 12 months from the date of installation and commissioning or 18 months from the date of supply for any manufacture defect, however defect arise due to miss handling, incorrect operation wear and tear shell be entertained with reasonable charges. The warranty of all instruments and pump and motor and other equipment except prefabricated items will be covered under actual manufacturer’s warranty conditions. 
HANDOVER 
Unless and otherwise specified in the order and accepted, handing over of the equipment and / or installation would be considered as completed and a formal completion certificate shall be issued by the purchaser / user. 
The equipment/system, to be supplied by us, shall be site erected and commissioned at purchaser’s site. 
This equipment/system shall be legally transferred to the buyer only after realization of full and final payment. 
MODE OF DELIVERY 
The goods may be dispatched in one or more lots at our option. If we are required to dispatch the goods on behalf of customer, we can arrange to do so on freight to pay basis on the understanding that no liability is attached to us. In such case, Freight charges contracted by us on behalf of the purchaser shall be final and binding on the purchaser. 
CANCELLATION 
Order received and acknowledged by us shall not be subject to cancellation, either wholly or partly for any reason whatsoever without our written consent. 
FORCE MAJEURE 
The order from the purchaser is subject to force majeure by which it means, such as war, invasion, civil disobedience, govt. orders or restrains, strike, lockout, riots, fire, epidemics, sabotages, trade embargoes, earthquakes, floods, accidents, breakdown of machines, delay or inability to obtain labour, raw material, wagons, shipping space or any other process, which is beyond our and our supplier’s control. 

JURISDICTION 
All contracts between purchaser and ourselves are deemed to have entered into in DELHI and are therefore subject to the Jurisdiction of Courts in DELHI. 

Excluded

Extra as per actual

Battery Limit:-  From Collection/Equalization Tank  Up to Tertiary Treatment
Interconnecting pipe lines are included
Thickness of MS Plate shall be 5mm
Aeration Grid shall be in GI (B Class) while submerged lines shall be UPVC
All interconnecting lines shall be UPVC (40 schedule) upto 200KLD, interconnecting pipe lines shall be MSEP (B class) more than 200KLD 
Earthling/electrical/civil or not included in specification, shall be in client/customers scope