The document presents a water management system designed for a 5-story college building in Guwahati, India. The system aims to reduce fresh water usage through rainwater harvesting, greywater recycling, and eliminating water waste. Key features include zero-waste toilets that reuse flush water, no-flush urinals, harvesting rainwater from rooftops, and using treated greywater and blackwater for agriculture and groundwater recharge. The system is estimated to reduce the building's annual fresh water needs by over 60% through sustainable water practices.

1. WATER MANAGEMENT SYSTEM WATER SAFE SUSTAINABLE AND FOR ALL A PRESENTATION BY: ANUJ BHAJANKA AVINASH CHIRANIA GUWAHATI COLLEGE OF ARCHITECTURE

2. Guwahati College of Architecture Site Chosen 5 STORIED COLLEGE BUILDING. 1 ST Flr. OFFICE. 2 ND 3 RD 4 TH Flr. ACADEMIC BLOCK. 5 TH Flr. RESIDENSIAL BLOCK. SITE SPECIFICATION PLOT SIZE – 16.63 X 37.4 m. BUILT UP AREA – 329Sq m. FLAT ROOF WITH OVER HEAD TANK. 18M HIGH BUILDING. GROUD SLOPING TOWARDS EAST.

3. THE SITE GUWAHATI COLLEGE OF ARCHITECTURE An Architectural Institute With Self Sufficient Water System Would Serve As A Living Example For The Masses To Be Aware Of And Adopt These Practices. People Look Towards Architecture To Serve Them With Better Living Standard….

4. Huge Requirement Of Water And No Proper Supply. High Energy Consumption In Water Pumps. Depleting Ground Water Reserve. Strom Water Disposal Due To Heavy Downpour. Flash Flood. Definitions of The Problem

5. 10 Resident @ 135 Lts/day/head 320 Students +40 Staff @ 45 Lts/day/head Watering Plants @ 100 Lts/day Car Wash @ 200 Lts/day Daily Consumption 17850 Ltrs. Annual Consumption 3527850 Ltrs.* PRESENT WATER CONSUMPTION 1350 Lts/Day 16200 Lts/Day 200 Lts/Day 100 Lts/Day * CONSIDERING 201 WORKING DAYS

6. BIFERCATION OF DAILY WATER USAGE FLUSH BATHING DRINKING WASHING UTENSILS COOKING WASHING CLOTHS => 40 LTRS => 4 LTRS => 3 LTRS => 20 LTRS => 25 LTRS => 20 LTRS INSTITUTIONAL USAGE RESIDENTIAL USAGE TOTAL USAGE 135Lts. TOTAL USAGE 45Lts.

7. CONCEPT “ WATER MANAGEMENT DOESN’T MEAN RESTRICTING THE USE,BUT REDUCING THE WATSE………” IDENTIFYING THE WASTE.. FRESH WATER USED FOR FLUSHING “ DOES IT MATTER WHAT KIND OF WATER IS USED FOR FLUSHING….” DISCHARGE OF RAIN WATER AND GREY WATER TO DRAIN. “ IF WE LOSE A DROP OF WATER EVERY SECOND, IT AMOUNTS TO ABOUT 10000 Ltrs. OF LOST WATER IN A YEAR…..”

8. EcoTrap inserted in the urinal outlet. This combination trap seal blocks out sewer gases, and blocks out urine odors from the room. NO FLUSH URINAL No-Flush urinals resemble conventional fixtures. The urinal bowl surfaces are 99% urine repellent. Daily cleaning procedures are the same as flushed urinals.

9. DOES IT MATTER WHAT KIND OF WATER IS USED FOR FLUSHING ??…… A toilet that will re-use the water that goes into flushing, rather than discharging it along with the excreta. This will be possible by not allowing water and solid waste to mix. THE MECHANISM WHEN FLUSHED, THE VELOCITY OF WATER PUSHES THE SOLID WASTE DOWNWARD. WHILE THE CENTRIFUGAL FORCE (ACTING OUTWARDS) PRESSES WATER TO THE SURFACE OF THE PAN. THE GEOMETRIC DESIGN OF THE SURFACE GUIDES IT TOWARDS THE SEPARATOR. THE PIPES ARE FITTED WITH MICROFILTERS WHICH CLEAN THE LIQUID. SMELL TRAPS FITTED IN PIPES AND TANKS ENSURE THAT THE TOILET DOES NOT STINK. AFTER FIVE-SIX DAYS THE TANK WILL BE REFILLED. ZERO WASTE TOILET

10. REDUCED REQUIREMENT WATER SAVED… IN ZERO WASTE TOILETS.. INITIAL WATER FLUSHED = 370 X 30 = 11100 Ltrs/Day THIS WATER IS NOW USED FOR 6 DAYS THEREFORE, AVERAGE USE = 11100/6 = 1850 Ltrs/Day PLUS 10 % OF WATER FLUSHED 2. IN NO WATER URINAL ----------- 370 X 10 = 3700 Ltrs AS 90% WATER IS SEPARATED 2035 Ltrs/Day THIS CAN BE TREATED GREY WATER WATER SAVED PER DAY--- 11100 + 3700 = 14800 Ltrs/Day FRESH WATER REQUIRED PER ----- 17850 – 14800 = 3050 Ltrs/Day ANNUAL FRESH WATER REQUIRED ---- 613050 Ltrs/Day * * CONSIDERING 201 WORKING DAYS = 185 Ltrs/Day

11. WATER SOURCE Though Two thirds of our planet is covered by water. Nature has given the urban dwellers only two Source of water. Rain water. Ground water. Therefore sensible use of this NATURAL RESOURCE should be done.

12. RAIN WATER HARVESTING 2500MM ANNUAL RAINFALL OVERHEAD TANK 66000 ltrs MICRO HYDRO ELECTRIC PUMP EXISTING UNDERGROUND RESERVOIR 125000 ltrs SLOPE ROOFTOP RUNOFF 70% OF (329 X 2500) = 575750 LTRS SURFACE RUNOFF 70% OF(301 X 2500) = 526750 LTRS OVERFLOW WATER TO THE GROUND CATHCHMENT AREA 329 SQ.M PERCOLATION PIT SANDBED FILTER OPEN SURFACE AREA 301 SQ.M WATER IS PUSHED BACK IN THE PIPE WHEN THE TANK IS FULL, THIS OVER FLOW IS DIRECTED TO THE PERCOLATION PIT. GROUND WATER RECHARGE ANNUAL RAIN WATER AVAILABLE- = 575750 + 526750 = 1102500 LTRS ANNUAL FRESH WATER REQUIRED = 613050 LTRS 489450 LTRS IN EXCESS

13. DEEP WELL BORING DEEP WELL BORING FOUNTAIN FOR AERATION TO UNDERGROUND RESERVOIR PUMP DURING DRY DAYS i.e. FROM THE MONTH OF NOVEMBER TO JANUARY WATER DEMAND CAN BE MET BY THE EXISTING DEEP WELL BORE. THE FOUNTAIN…THOUGH AN ARCHITECTURAL ELEMENT IT NOT ONLY ADDS TO AESTHETICS BUT ALSO HAS A FUNCTIONALITY… IT REDUCES THE IRON CONTENT BY OXIDIZING FERRIC TO FERROUS… FILTER BED

14. SCHEMATIC DIAGRAM OVERHEAD TANK RECYCLED WASTE WATER TANK W.C./URINAL BATH / WASH KITHCEN EXISTING UNDERGROUND RESERVOIR SOIL PIPE TWO WAY VALVE SEPTIC TANK TANK FOR COLLECTING GREY WATER DEEP WELL BORING BLACK WATER RAIN WATER PIPE

15. BLACK WATER HARVESTING 11100 liters of BLACK WATER is generated every 6 days…… This water is rich in urea content, nitrogen, phosphorous…… IS WASTING SO MUCH WATER INTO THE DRAIN A INTELLIGENT THOUGHT…….. WATSE WATER TANK TAKEN UNDER GROUND THROUGH AGRICULTURE PIPES TO THE SOIL IN THE ROAD DIVIDER CONTRIBUTING TO PUBLIC --------------- RELEASED UNDER GRAVITY ROAD

16. AGRICULTURE PIPE LIME BAGS UREA RICH WATER NOURISHES THE PLANTS These pipe avoid contamination of ground water. BLACK WATER UTILIZATION

17. 33% water can be saved without effecting normal life, just by reducing wastage… Use Bucket Instead Of Running Water For Car Wash Watering Plants During Morning Or Evening Save Water Loss Due To Evaporation. Low Flow Shower Heads Maximizes Water Coverage & Minimizes Water Volume A Bottle Of Mineral Water In The Cistern Controls The Amount Of Water Being Flushed At One Go. Kitchen Activities Should Be Planned To Reduce Wastage Of Fuel And Water Use Mug Instead Of Running Water While Brushing Run Dishwasher, Washing Machine And Dryer Only When Fully Loaded HABITUAL PRACTICES

18. The energy of running water can be harnessed by a turbine and converted to electricity. The amount of energy produce depends on “head” (vertical distance) and "flow" in litres per second. Heads as low as 5 meters and flows of 1 ltr per second can produce power. HYDRO ELECTRIC MOTOR THE CARBON LOAD OF WATER • It takes 1.2 kWh of electrical energy to supply and treat 1m 3 of water. • That is results in 0.54 kg of CO 2 per m 3 of water CAN THIS SITUATION BE REVERSED…………… “ IF EVRY INDIVIDUAL PRODUCES ENERGY, HE CAN BECOME A SOURCE OF USEFUL ENERGY….”

19. POST DESIGN BENEFITS Green Cover. Recharge of Ground Water. Water Efficient. Energy Production. Urea Rich Soil. Reduction in Flash Flood. Reduce Soil Erosion. “ IF SO MUCH IS POSSIBLE IN SUCH A SMALL SITE…THEN THERE IS MUCH THAT CAN BE ACHIEVED IN THE CITY LEVEL.”

20. Thank You