THE LEELA PALACES & RESORTS PVT. LTD. AGRA

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5 THE LEELA PALACES & RESORTS PVT. LTD. AGRA SOLAR LIGHTING WORKING ( DT ) FOR COMPLIANCE OF PT. NO. 19 FROM 236TH SEAC MOM PROVISION OF 100% SOLAR LIGHTING ALONG ROAD SITE, STAIRCASES, COMMON PLACES 1. SURFACE AREA REQUIRED FOR MOUNTING SOLAR PANEL ( FOR STAIRCASES ) S.NO. STAIRCASE NOS. NO. OF LANDINGS/ STAIRCASE NO. OF STAIRCASES TOTAL NO. OF LANDINGS UNIT 1 ST. 1, ST LANDINGS 2 ST. 4, ST.5,ST LANDINGS 3 ST LANDINGS 4 ST. 7, ST.8, ST. 9, ST. 10, ST.11, ST LANDINGS TOTAL 219 LANDINGS WATTAGE PER LIGHT FIXTURE ( APPROX.) THUS TOTAL NO. OF WATTAGE ( 219 LANDING * 40 WATTS) THUS TOTAL KILOWATTS IS ( 8760 /1000 WATTS) THUS TOTAL AREA REQUIRED ( IS 110 SQ.FT/ 1 KW) i.e. ( 9 KW * 110 SQ.FT.) TOTAL AREA REQUIRED FOR 100% SOLAR LIGHTING IN STAIRCASES ( SQ.MTS. ) ( 964 SQ.FT. / ) 40 WATTS 8760 WATTS 9 KILOWATTS 964 SQ.FT. 90 SQ.MTS. 2. SURFACE AREA REQUIRED FOR MOUNTING SOLAR PANEL ( FOR COMMON AREAS ) BASE MENT LEVEL EXTENT OF COMMONAREA ( SQ.MTS.) TOTAL ( SQ.MTS.) ( ) CONSIDERING 1 LIGHT FIXTURE FOR EVERY 10 SQ.MTS. AREA ( 18060SQ.MTS. / 10 SQ.MTS) TOTAL REQUIREMENT (WATTS) ( 1806 NOS. * 40 WATTS PER LIGHT FIXTURE ) UNIT WATTS TOTAL REQUIREMENT IN KILOWATTS WILL BE ( WATTS/ 1000) THUS TOTAL AREA REQUIRED ( IS 110 SQ.FT/ 1 KW) i.e. ( 72 KW * 110 SQ.FT.) TOTAL AREA REQUIRED FOR 100% SOLAR LIGHTING IN COMMON AREAS IS ( 7946 SQ.FT. / ) 72 KILOWATTS 7946 SQ.FT 738 SQ.MTS. A TOTAL REQUIREMENT IN SQ.MTS. ( ) 828 B PROVISION WILL BE ( BLOCK I 662 SQ.MTS. + BLOCK SQ.MTS.) 900 SQ.MTS.

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8 Process Details Coarse Bar Screen Raw sewage from the source is usually received into the bar screen chamber by gravity. Screen provided will remove all floating and big size matter such as plastic bottles, polythene bags, glasses, stones, etc., which may otherwise choke the pipeline and pumps. Coarse Bar Screen size of 10 mm is suggested for removal of coarser materials at the inlet line to Equalisation Tank. Fine Bar Screen Trash and non-biodegradable solids, such as hair, lint, grit and plastics may foul or damage the membranes if allowed to pass into the membrane chamber. An internally-fed screen with punched-hole openings less than or equal to 2 mm in diameter with no possibility of bypass or carryover is absolutely required to maintain both membrane warranty, and optimal MBR operation. Oil and Grease Trap If the sewage generated includes maximum quantity from kitchen and Canteen, there is a possibility of higher concentrations of OIL and GREASE in the raw sewage. It needs to be removed / separated before biological treatment as it otherwise may cause problems for biological treatment. Usually, a small tank with a baffle wall and slotted oil pipe skimmer/belt Skimmer is to be provided by client. The oil and grease removed by gravity floats to the surface, which is to be removed manually. In case of large installations, this can be mechanized by client. Grit Chamber The sewage before enters to the Equalisation Tank is passed through the Grit Chamber wherein the grit and other heavy particulates that can cause abrasion to the surface and the membranes. The heavy particulates settle quickly at the bottom of the tank and the inlet sewage overflow to the Equalisation Tank. Equalization Tank (Civil Construction) Usually, sewage generation is more during morning hours and evening hours. Visually no sewage is generated during night hours. Any biological system needs constant feed for bacteria to work efficiently. Hence, it is important to install an equalization tank upstream of the Biological Tank to collect the variable & excess flow during peak hours and feed sewage in lean hours. The required equalization volume can also be incorporated into the biological tank under certain circumstances and a typical equalization tank has a capacity of 8 10 hours of average flow rate. The tank is generally of civil construction by client. Provision of air grid is to be made for thoroughly mixing the sewage to make it of homogenous quality and to keep the suspended matter in suspension and to avoid septic conditions. Collection Tanks at various locations and pumping station to Equalisation Tank. (Option by Client) There are few cases wherein the sewage cannot flow by gravity and distance locations, collection tanks are constructed near to the usage and Automatic pumping stations are installed and controlled separately. In coastal area, due to underground construction issues, small collection tank is installed and pumped to above ground Equalisation tank.

9 Transfer of Sewage Sewage Transfer Pumps (Eq Tank to Biological system) IEI s scope starts from transfer of sewage from Equalisation Tank to Biological System. The suction head should not exceed 2.5 meters and the discharge distance of transfer should not exceed beyond 5 meter. The transfer pump can be either submersible or nonsubmersible type for this application. However IEI has considered centrifugal nonsubmersible type. The layout shall be as per IEI standard. The pump should not run dry and Client to ensure sufficient sewage is available in the Equalisation Tank. Automatic Fine Screen 2 mm size. In the discharge line of the raw sewage pump before entering the Anoxic tank or Aeration tank, 2mm Automatic Fine screen is provided to ensure, above 2 mm particulates and hair are separated. Anoxic Tank (Optional) The raw sewage thoroughly mixed with the sludge re-circulated from MBR tank. The sufficient hydraulic retention time ensures nutrient reduction. Sufficient quantity of Ferric or Non ferric Alum is also dosed for reduction of Phosphates. Aerobic Treatment in Biological Tank Screened waste water from Equalisation Tank / Anoxic Tank will flow to bioreactor where MLSS is maintained by ensuring proper aeration to maintain required MLSS to degrade the BOD and other bio de-gradable contents of waste water. The process aeration blowers provide air for the biological tank and ensure that sufficient oxygen is available to maintain the biological processes in the tank. A fine bubble diffused aeration system delivers air from the aeration blowers to the aerobic zone of the process tank. To maintain the MLSS, recirculation of sludge is carried out from MBR Tank either directly or through Anoxic Tank. MBR Tank We are proposing sewage treatment plant with state-of-the-art membrane separation technology called as INDION Membrane Bio-Reactor (MBR) which can produce very good quality with highest possible bacterial reduction without adding any chemicals. MBR (Membrane Bio Reactor) is the latest technology in wastewater treatment. MBR has many advantages such as higher quality of treated water, smaller space for installation and easier operation compared to conventional activated sludge process. Designed to produce high quality treated water from wastewater the INDION Membrane Bio Reactor (MBR) is among the latest technologies in biological treatment. The characteristic of the MBR process is the use of revolutionary submerged Ultrafiltration membranes in the biological process water tank, so as to produce high quality permeate from domestic sewage, primary and secondary waste water, cooling tower blow down etc. The INDION MBR is also ideal for retrofitting/augmenting capacity/quality of existing wastewater plants. The MBR can handle very high sludge concentrations in the Aeration Tank because of which the size of the aeration tank reduces four to five folds. As the membrane acts as a fine filter, it does not require any further treatment using sand filters, activated carbon filters, etc. The INDION MBR is available in standard and customized modules.

10 Activated sludge in the Aeration Tank is clearly separated by the Hollow Fibre type submerged membrane. The membrane module consists of module cassette housing, aeration manifold diffusers, permeate water manifold and membrane modules. The membrane element consisting of hollow fibre modules properly supported at top is set up vertically. Feed water including activated sludge is filtrated by hollow fibre membranes with pore size of 0.1 micron meter. The air bubbles supplied from the bottom of the membrane elements continuously scour off cake of activated sludge accumulated on the membrane surface. This is continuous filtration operation. The air bubbles are also used for the biological reaction to decompose organic substances included in the raw sewage. MBR MODULE The material of the membrane is PVDF (Poly Vinylidene Fluoride), non ionic and hydrophilic in nature. PVDF is fluorine polymer, which has high stability for chemicals and good physical strength. The form of membrane is reinforced Hollow Fibre membrane of appr mm outside diameter and 0.47 mm inside diameter. The membrane has small and uniform pore size. Therefore, the rejection property of this membrane is excellent. Almost all particles with nominal sizes more than 0.02 micron meter can be removed effectively using this membrane. The mixed liquor from the bioreactor/biological/aeration Tank will flow to membrane tank by gravity to Hollow Fibre membrane installed in the Membrane Bioreactor Tank. The proposed system has either Single or two train of membrane tank. Periodically, activated sludge is wasted to maintain desired system SRT. One duty and one standby membrane aeration blowers are included to provide membrane air scouring. The air scouring on the membrane is to avoid accumulation of sludge on the surface of the membranes that may hinder permeability of membrane Permeate/Back Pulse Multipurpose Pump One permeate pump per train is employed to draw water through the membranes. Under normal operation and average day flow conditions, permeation is stopped for a specific period of time at regular intervals. This is mentioned as membrane relaxation period in which there is no permeate drawn from the MBR but the operation is combined with air scouring, effectively removes solids that have accumulated on the membrane surface or within the fibers and reduces electrical costs. At the same time, the same permeate pump with Automatic valve arrangement is provided for back pulsing the membranes. Under increased flow or adverse sludge conditions, the operator is able to select a back pulse mode. In this instance, the Backpulse pump will reverse the flow of permeate through the membrane fibers to dislodge solids that have accumulated on the membrane surface or within the fibers. This operation is to ensure the membrane pores are cleaned with forced permeate water from Inside Out and Air Scouring outside the membranes. Mixed Liquor Recirculation Equipment Recirculation pumps are used to transfer mixed liquor from the Membrane Tank to Bioreactor. The effluent overflows by gravity from Bio-Reactor tank/aeration Tank to the Membrane tank at a rate. The sludge recirculation transfers solids away from the membranes and provides proper distribution within the bioreactor. Treated Water Collection Tank The treated water collection tank can be of civil construction by client in case required. Generally 8 10 hours storage is recommended as the usage in the night time is less and

11 day time is more whereas the biological system gives the average flow needs to be stored when usage is less. Sodium Hypo Chlorite Dosing System for Treated Water Dosing of Sodium hypochlorite helps in disinfecting the water and making it suitable and safe for gardening and flushing and other applications after post treatment. The chemical is dosed by means of an electronic dosing pump wherein a facility is available for manual control of stroke length and / or stroke frequency. Based on the Pollution Control Board treated water requirements, the Free Residual Chlorine (FRC) of appr. 1.0 ppm is maintained to reuse the water for various applications. Cleaning System The membranes are subject to fouling and the membranes needs to be cleaned periodically to get a better yield from the membranes. The frequency of cleaning depends on the fouling and appr. Weekly once or twice the in-situ cleaning and soaking is carried out using Sodium Hypo Chlorite or Citric Acid and this is done as a preventive maintenance cleaning schedule in most cases to avoid any major break down cause irreparable damage to the system. Though the preventive cleaning is regularly done, it is also envisaged some amount of fouling is still present in the membranes requires shut down of the MBR system and soak with chemical solution in the MBR tank. The frequency may be once or twice in a year that depends on the fouling rate. Sodium Hypochlorite Dosing system The Sodium Hypochlorite Dosing system is used during membrane cleaning applications to remove organic fouling from the membrane surface. The chemical is dosed during back pulse and allow the membrane to soak for the determined period to improve the performance of the membrane by removing the fouling of foreign matters especially organic matter adhered to the surface. The chemical is also used during maintenance clean during such time the entire MBR tank is filled with chemical and the frequency depends on the intensity & nature of fouling. Citric Acid Dosing System The Citric Acid Dosing system is used during membrane cleaning applications to remove inorganic scaling from the membrane surface. The chemical is dosed during back pulse and allow the membrane to soak for the determined period to improve the performance of the membrane by removing the fouling of foreign matters especially inorganic matter adhered to the surface. The chemical is also used during maintenance clean during such time the entire MBR tank is filled with chemical and the frequency depends on the intensity & nature of fouling. Sludge Handling System The accumulated sludge from Eq Tank, Anoxic Tank, Aeration Tank and MBR tank is removed periodically. The MLSS is also diverted from the recirculation return line, via manual control or by pulling directly from the bioreactor. The frequency of removal is a function of influent characteristics, reactor design and operator preference. In certain operating circumstances, bioreactors can be designed to accommodate client preferences with regards to removal frequencies. The Polyelectrolyte addition will help to thickening & dewatering the sludge. There are various options that can be provided depends on the site conditions and preference by client. Sludge Storage Tank:

12 Sludge Storage Tank needs to be provided in the base of the units. Depending on the load applied there is approximately one day capacity provided. If the sludge generated is minimal this can be stored for more than 2 days also. Sludge Drying Bed (SDB) The sludge from the MBR tank needs to be removed from the bottom of the tank by client and transferred to Sludge Drying Bed (SDB) either by gravity or through pump depending on site condition. Before starting the de-sludging, shut off the aeration for 20 minutes and allow the sludge to concentrate at the bottom. After concentration, the bottom sludge valve can be opened to drain the required quantity of sludge. Sludge Drying bed occupies more area hence the option is to filter the sludge in the Multiple sand bed and the arrangement of piping is to take care the filtered water can go back by gravity to Eq tank. There are other alternate Options to handle the sludge Desludging can be carried out by Suction Tanker / Sludge Drying Beds / Centrifuge / Filter Press /Centrifuge Decanter or Sludge Thickener by Client. IEI can offer this design / equipments at extra price. Control Automation of Equipments GE Fanuc Programmable Logic Controller (PLC) and Panel View with a Human Machine Interface (HMI), monitors and manages all critical process operations. Level controls monitor the level of mixed liquor in the process tanks and transmit this information to the PLC. The PLC will automatically adjust the flow of the ZeeWeed UF membrane train based on proportional control to the process tank levels in order to minimize the instantaneous flux of the membranes. In the event of a system or equipment problem requiring operator attention, the PLC can either alert the operator or shut the system down. The PLC control panel includes all control Signals from Instruments and output signals to all the motor control hardware equipment.

13 THE LEELA PALACE AND RESORTS LTD Agra, India HAS FULFILLED THE REQUIREMENTS OF PRE-CERTIFICATION UNDER LEADERSHIP IN ENERGY AND ENVIRONMENTAL DESIGN (LEED ) FOR CORE & SHELL DEVELOPMENT LEVEL: PLATINUM DOCUMENTATION HAS BEEN SUBMITTED FOR THIS PROJECT, WHICH DEMONSTRATES AN INTENT TO DESIGN AND BUILD A HIGH-PERFORMANCE LEED GREEN BUILDING. SEPTEMBER 2015

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