Date:- 13 August 2019
Aim:- I learn COD of gray water samples i.e inlet & outlet
Introduction:-I had learned about COD procedure by taking COD of gray water system sample (i.e inlet & outlet) >
PROCEDURE:- I collect sample (i.e Inlet & outlet) from different gray water system .
1)Take 0.4 gm mercuric sulphate COD tube
2)Addition
| Blank solution | KHP Solution | Inlet | outlet |
| 40ml Distilled water | 20 ml KHP solution | 20 ml gray water system inlet water sample | 20 ml gray water system outlet water sample |
| – | 20 ml distilled water | 20 ml distilled water | 20 ml distilled water |
3)Added stone
4)Added 10 ml (0.25N) Potassium Dichomate sol.
5)Added 30 ml Sulphuric Acid slowly along with swirling
6)If turn green added more quantity of pottassium dichromate
7)kept COD tubes in cod appratus
8)attached condenser
9)keep temp.150 for 2 hours
10)cooled solutions
11)Added 150 ml distilled water in above solution
*Titration
Titrate with 0.1N FAS( Ferrous Ammonium Sulphate)
Indicator-Ferron indicator
End point-Blue Green Reddish Brown
Before After
Readings:_
| Blank | KHP | Inlet | Outlet | |
| reading | 9.2 | 4.6 | 5.3 | 8.1 |
| COD | – | 469.2 | 397.8 | 112.2 |
*Formula:-
COD:- (a-b)*N*8000/ml of sample
a-blank solution
b-sample
N-normality of FAS
*Need of this experiment :-We have to need of understand how much COD of gray water systems inlet water samples and outlet water samples . By using this method we can find purity of water sample
Assignment:-2 Learn Prerana Kit
Date:- 23 August,2019
Aim:- By using prerana kit take test of soil .
We can find 5 parameters in soil by using prerana kit i.e,pH, N, P, K, OC.
Procedure for pH:-
1)Take 5 ml pH reagent in glass bottle-1
2)Added 2gm soil sample in this bottle with help of funnel
3)waite 10 minute
4)compaire this bottle with pH colour comparator
*procedure for N
\1)Take 6ml AN1 solution in test bottle 1
2)Added 1gm soil sample
3)mix contain for 1 minute
4) Wait for 5 min
5) soil will settle down with the help of dropper take solutin in bottle no 2 at 2ml mark
6)added 4 drop AN2 &AN3 mix gently
7)compair this bottle solution with ‘N’ colour comparator
*procedure for phosphorous
1)similar to nitrogen added AN1, AN2 AN3 in addition added AP1 AP2 AP3
2)compair this bottle with ‘P’ colour comparator
*procedure for ‘K’
1)Take 1gm soil sample in reagent AP1
2)after soil settle 2ml clear solution take in bottle 2 with help of dropper
3)Added AK2 (1 tablet) kept bottle 6 min
4)added AK4 2drops at time
5)compare this bottle with ‘K’ color comparator
*procedure for OC
- Take 100 mg soil sample in glass bottle
- Added 10 drops of OC1 & 18 drops of OC2
- Kept this sol. for 13 minute
- Added OC 3 make up at 5 ml
- Keep it for 8 minute
- Compare this bottle with OC color comparator readings
Readings:-
Above result indicate that PH of polyhouse soil is perfect and oc is also in medium as well as P & N is in limit. In chilli farm limit of PH is perfect but limit of orgaic carbon is very less as well as P & N is less in quantity
Assignment no.3:- Learn Nagarjuna Kit
Aim:- Find 12 parameter in soil by using Nagarjune kit
By using Nagarjune kit I had found out following parameters of soil.
PH, EC, Oc, N, P, Mn, I, Cu, K, S, Zn, B .
Apparatus :-
Whole Nagarjune kit ( Shaker , Heater, plastics tubes, beakers, soil tester)
Process:–
I followed Nagarjune kit manual procedure for finding out above parameter
collect soil sample different places /different farmers farm.
Soil Testing results
| Parameter | Soil sample 1 | Soil sample 3 | Soil sample 3 |
| PH | 7 | 6.5 | 8 |
| Ec | 0.31ms/cm | 0.66ms/cm | 0.48ms/cm |
| K | 331.5mg/kg | 67.18mg/kg | 418.2mg/kg |
| Oc | 0.47% | 0.69% | 0.60% |
| N | 525 mg/kg | 385mg/kg | 461.8mg/kg |
| S | 130mg/kg | 97mg/kg | 115mg/kg |
| P | 61.66kg/ha | 111.7kg/ha | 123.3kg/ha |
| Fe | 3.36mg/kg | 4.36mg/kg | 8.28mg/kg |
| Mn | 4.05mg/kg | 7.20mg/kg | 6.30mg/kg |
| Cu | 1.31mg/kg | 5.89mg/kg | 0.56mg/kg |
| Zn | 2.59mg/kg | 0.92mg/kg | 4.99mg/kg |
| B | 38mg/kg | 20mg/kg | 30mg/kg |
