Awareness and Procedure for Rwh
Transcript of Awareness and Procedure for Rwh
-
8/9/2019 Awareness and Procedure for Rwh
1/28
AWARE
PROCERAIN WATE
(R
SHRI U.M.
RAIN WATER MANG
TRUSTEE JALVAR
ESS AND
URE FORHARVESTING
H)
ARANJPE
MENT CONSULTANT
HINI PRATISTHAN
-
8/9/2019 Awareness and Procedure for Rwh
2/28
Introduction
Rain Water Harve RWH means storing Rain
artificial / manmade reser
OR
In natural reservoirs suchit as and when we need it
In short RWH is storing Rabove ground or bellow gsource of water
stingater in
oir ( tank )
as Pond, aquifer and usingas a source of water
in water either in tankound and using it as a
-
8/9/2019 Awareness and Procedure for Rwh
3/28
Following are the object1) To use it as a source
(i) Drinking purpose
(ii) Non potable purp
gardening , car washi(iii) To store it and us
agriculture purpose.
2) To recharge open welreplenish the water us
ves of R.W.Hof water
se such as flushing,
g ect.e it for Horticulture and
l & bore well so as tod during entire year
-
8/9/2019 Awareness and Procedure for Rwh
4/28
3) To store it in pond, lake f/ aquifer or for to use it af
4) To control salt water intru
well along coastal area.
5) To recharge subsoil / aquilevel flooding is reduced ocities.
6) To improve quality of wat
r either recharge of subsoiler monsoon
ion in pond,lake,well,bore
er in cities so that localr arrested particularly in
r.
-
8/9/2019 Awareness and Procedure for Rwh
5/28
Potential Of Rain Wat Assuming annual average Rain
Each 1000 sqm of land will yiel
or 10,00,000 liters of water.( o
1000 cu.m is sufficient for 20 p
1000 cum is sufficient of aboutflushing purpose at 40 lpcd
Assuming Cost of water supplieloosing at Rs 20 per sqm of lanevery year.
e
rfall as a 1000mm (1m)
1000 cum
e million liter )
rsons for entire year at 135 lpcd
70 person for entire year for
d as 20 per cum We will beor 20000per 1000 sqm of land
-
8/9/2019 Awareness and Procedure for Rwh
6/28
Importance of Rain Wa In a city normally tap and or b
water.
Very few people are considerin
Since Rain water has huge potewater as a 1st source of water a
er Harvestingre well water is a source of
Rain water as a source of water
ntial we should consider Rainnd then go for other sources.
-
8/9/2019 Awareness and Procedure for Rwh
7/28
Quantification of
Rain Water Harvestin
(i) Roof top (Terrace )of Building / (ii) Open portion of plot
Roof top area can be calculated fro
of Roof top Rain water is possible
If we know Rate of Infiltration then
Ifintake capacity of bore wellis kn
quantity of water used for recharge
R.W.U.I. = Rain water Useddurin
Total Rain fallduring y
Buildings and
bldgdrawing Hence quantification
recharge quantity can be calculated
w to us then we can calculate
of bore well
year
ar
-
8/9/2019 Awareness and Procedure for Rwh
8/28
Procedure for Roof top
collection Calculate the Available roof top
Annual average Rainfall & No o
Daily requirement of water forGardening, Car washing etc.
Position of Rain Water down ta
(Terrace ) Rainwater
or terrace area
Rainy days
on potable use such as flushing ,
e pipes.
-
8/9/2019 Awareness and Procedure for Rwh
9/28
Use of Rainwater
for NonP
otableP
urp
(1) Jamanabai Narsi school at Juh
Roof Top area = 8,00 sqm
Daily requirement = 40,000 liter
Rain water Storage tank capacit
This storage capacity is sufficien
sufficient for 2 day flushing w
Total Rainwater available for use
= 1,120 cum
se
Mumbai
provided = 1,00,000
to collect 120mm of rain fall & is
ter requirement.
8,00 X 2 X0.70
-
8/9/2019 Awareness and Procedure for Rwh
10/28
(2) 10th Kheth wadi MumbaiRoof Top 110 sqmTotal Flats 54 Daily flushing
Rain water Storage tank capaThis storage capacity is sufficisufficient for one day.
Total Rain water available 110 X 2
CIPLA LTD. Vikoril (West ) MumbaiRoof top 1170 sq mtFlushing water requirementRain water Storage tank cap
This storage capacity sufficient tosufficient of 2 days, Total Ra
1,170 X 2 X 0.70 = 1,638 cu.m
ater Requirement 10,800 liter
city10
,000
litersent to collect 90 mm Rainfall & is
X 0.70 = 154 cu.m
5,000 literscity 2,00,000 literstore 170mm Rainfall & isin Water available
-
8/9/2019 Awareness and Procedure for Rwh
11/28
Capacity o
Rain WaterHence capacity of Rainwater
either 5 times flushing dailrequirement
O
capacity should be sufficientover Roof top.
( Minimum tank capacity shto accommodate one tank
Roof Top
torage Tanktorage tank should be(non potable) water
o collect 100 mm Rainfall
uld be 10,000 liters so asr of water )
-
8/9/2019 Awareness and Procedure for Rwh
12/28
FILTERS
By using 100 micron Geo te
Uni tech filter having v wir
Rainy Filters( F.R.H. system
Jonsan V wire filter
tile
technology
Banglore )
-
8/9/2019 Awareness and Procedure for Rwh
13/28
On LineF
ilters
-
8/9/2019 Awareness and Procedure for Rwh
14/28
Recharge of Subso For Rain fall over open portion
available for R W H (i) Recharge of subsoil (ii) Recharge ofAquifer (iii) Recharge of bore well For recharge of subsoil we will
Trial Pit Methods
Double Ring Infiltro meter
For recharge ofAquifer we willpermeability test
For recharge of bore well we wi
il Groundwaterf plot following options are
ave to carry out infiltration test
ave to carry out packer
ll have to carry out pumping test
-
8/9/2019 Awareness and Procedure for Rwh
15/28
Recharge of Subsoil
Infiltration TestTRIAL PIT METHOD The percolation rate is observe
constructing a trial pit of size 1 The pit is filled with locally avai
necessary to stimulate the sam
occur during rainy seasons. Hence percolation rate is obser
a long monsoon rains say two t After 2 or 3 days of rains the s
saturated, and the percolationrealistic, than one observed du
This observed rate is a reasonaof pits required to percolate , awater is collected.
at site by developing /.2m x 1.2m x 1.5m.
lable graded material. Here It isphysical condition which may
ed during a small dry spell afterthree days or more.
b soil will be sufficientlyate observed will be moreing pre monsoon period,le basis to calculate the numberter knowing the area from which
-
8/9/2019 Awareness and Procedure for Rwh
16/28
Recharge of Subsoil
Infiltration TestDouble Ring Infiltro meter It is a another simple method f
soil.( flow rate of water into grconcentric ring with outer ringring having dia of15 cm . (or o
Height of each Ring is 30 cm Tto soil ( say 10 cm inside the son their own
First outer ring is filled up withup with water The water level imanually or with instruments tiobserved. This steady rate will ithat soil.
r finding out permeability ofund ) Instrument consist of 2having dia of30 can and inneruter 60 cm & Inner 30 cm )e two rings are driven partially inil ) so that rings stands vertically
water and then Inner ring is filledn both ring is maintained eitherll steady downward rate is
ndicate the Infiltration rate of
-
8/9/2019 Awareness and Procedure for Rwh
17/28
Options to recharge Percolation pit
Percolation pit with bo
Percolation pit along Percolation pit with bo
subsoil
re
WD
re along with SWD
-
8/9/2019 Awareness and Procedure for Rwh
18/28
DEATILS OF
1) PERCOLATION PIT 2) PERC
3) SWD WITH PIT 4) SWD
LATION PIT WITH BORE
ITH BORE
-
8/9/2019 Awareness and Procedure for Rwh
19/28
Recharge of Bore well
( Pumping Test ) Water is pumped out from bore
pumping rate.
While pumping water level is re
minute till we stop pumping
After we stop pumping water leminute till it attains original lev
From above data we can calcul
well for 2 to 3 hours with known
corded from start every 15
vel is again recorded every 15l
te in take capacity of bore well.
-
8/9/2019 Awareness and Procedure for Rwh
20/28
photo
-
8/9/2019 Awareness and Procedure for Rwh
21/28
-
8/9/2019 Awareness and Procedure for Rwh
22/28
Quality of water use
( Artificial re Roof top ( Terrace ) water
recharge after proper careflush & filter arrangement.
Run off water contains orpesticide residue and disssource of contamination.
Hence quality of water shof Drinking water.
d for well recharge
harge )to be used for directsuch as system having first
anic matter, fecal matter,lved fertilizer are potential
uld be comparable to that
-
8/9/2019 Awareness and Procedure for Rwh
23/28
Natural In case of natural recharg
surface runoff it passes thcover, before it reaches thwater recharge takes advability for biodegradationproviding in situ treatmencover acts as a purifier.
echargeof aquifer by Rainfall &
rough certain depth of soile aquifer. Here groundntage of subsoils naturalnd filtration, there byof surface runoff. This soil
-
8/9/2019 Awareness and Procedure for Rwh
24/28
Hence following methods
i) A farm pond ( 10m X 6
from open well or bore well
ii) Circular trench aroundof 2m away & filled up wi
re used
X 3m ) at a distance of 2m
ore well or well at distanceh graded material.
-
8/9/2019 Awareness and Procedure for Rwh
25/28
Utilization of Surfac For Rain Water Harvesting of s
area more the 10000 sq.m., pr
m average depth. Then pond
3= 1500 cu.m.
Helps in reducing flooding of ad
At S.H. Kelkar & Co. At their fa
We have developed pond havin
depth, to collect part surface ru
( 88000 sq m ). The capacity o
e Runoffrface Runoff in layout having
vide pond having 5% area and 3
ill have capacity to store 500x
joining road
tory at panvel:
50 m dia and 3 m average
noff from 22 Area of land
Tank. is 5891.25 cu.m.
-
8/9/2019 Awareness and Procedure for Rwh
26/28
POND AT PANV L
-
8/9/2019 Awareness and Procedure for Rwh
27/28
Operation and Main
Specialinstructions to be give
occupants to keep the terrace
be allowed by society to its me
Filter to be used as per instruc
Necessary precautions to be ta
Simple periodic chlorination or
for disinfectionis to carried ou
Filter media and nylon net sh
obtain proper result.
Water shouldnot be allowed t
percolation pit.
Drain the R.W.H tank complete
thoroughly before every mo
tenance Guidelines
to the members of society /
f Bldg clean( Terrace shouldnot
mber to any family function)
ions of manufacturer
ken to avoid mosquito breeding.
use oflime in the flushing tank
.
uld be cleaned periodically to
stagnate in the collection or
ly and clean from inside
nsoon.
-
8/9/2019 Awareness and Procedure for Rwh
28/28
I Think with this we casubstantial RWH
TH
n defiantly achieve
NKS