View source for Biogas-Plant/C3/Building-the-walls-of-the-Slurry-tank/English


{| style="border-spacing:0;"
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>'''Visual Cue'''</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>'''Narration'''

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 1

Building the walls of the slurry tank

[[Image:]]

| style="border:0.75pt solid #000000;padding:0.071cm;"| Hello everyone. 

Welcome to this '''Spoken Tutorial''' on building the walls of the slurry tank.

This is an activity to be done on Day 2.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 2

Learning Objectives


We will learn: 

* How to build the walls of the slurry tank

| style="border:0.75pt solid #000000;padding:0.071cm;"| In this''' tutorial''', we will learn-

* how to build the walls of the slurry tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 3

Building the walls of the slurry tank

What is a slurry tank?
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Let’s first understand what is a slurry tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Slurry-


1. Is the most important by-product of the fermentation-
* that takes place inside the digester tank.

2. This slurry comes out of the digester tank and is collected in the slurry tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 4

Building the walls of the slurry tank

Position of the slurry tank? 
| style="border:0.75pt solid #000000;padding:0.071cm;"| Let’s look at the position of the slurry tank with respect to the '''Biogas plant.'''

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| The slurry tank is placed-

* in line with the entrance of the dome.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 5

Building the walls of the slurry tank

Shape of the tank?
| style="border:0.75pt solid #000000;padding:0.071cm;"| What is the shape of the tank? 

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| These tanks are rectangular in shape.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image

Arrows at the upper tank and the smaller tank.

| style="border:0.75pt solid #000000;padding:0.071cm;"| 
What you see here is the pictorial representation of the slurry tank.


The slurry tank is divided into-

# Small tank and the upper tank.
# The small tank is enclosed within the upper tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| # Entrance view of this image 
# Arrow at the hole
# Show dimensions 

| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Notice-


1. The pink colored walls of the smaller tank-
*enclosed inside the blue colored upper tank.

2. Also note, the upper tank has an outlet hole.

3. The lower tank is in line with the entrance to the digester tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 6

Building the walls of the slurry tank

How many walls have to be built for constructing the slurry tank ?
| style="border:0.75pt solid #000000;padding:0.071cm;"| So, in total, how many walls have to be built for constructing the slurry tank?

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| Total 7 walls have to be constructed to build the slurry tank.

The various dimensions are shown in the image.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image

| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Items used for construction are

* '''Steel''' rods and
* Chicken mesh


Detailed specifications of these are mentioned in the''' tutorial '''on Materials required.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
To begin with, 


Insert one of the 3 '''steel''' rods through the holes of the chicken mesh.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| Insert these '''steel''' rods through sufficient number of holes.


This will ensure that the rod will not slide while placing it on the '''cement''' plaster.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Image
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Next, lay a '''plastic''' sheet on the ground.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Use a measuring tape to mark boundary for- 

# height
# width 
# breadth 

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| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>Image</center>

<center>[[Image:]]</center>

<center>[[Image:]]</center>

| style="border:0.75pt solid #000000;padding:0.071cm;"| 
We will spread the '''cement''' mixture within this boundary, on the '''plastic''' sheet.

Prepare '''cement''' mixture as follows-

* Sand- 150 kgs
* '''Cement'''-50 kgs
* Liquid waterproofing material -150 ml thoroughly stirred in 20 litres of water.
* And adequate water to mix the '''cement '''mixture well

Note- that no gravel is used in this mixture.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
To begin with, 


First, spread 1.5 inches thickness of the''' cement''' mixture.


Spread it between the boundary of the wall.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Now carefully-


1. Place the chicken mesh with inserted '''steel '''rods on this '''cement '''mixture.

2. This chicken mesh with inserted '''steel '''rods serve as-
* a support for the '''cement''' mixture.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| 
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Care should be taken to- 


1. Leave an extra 4-5 inches of chicken mesh at either sides of each wall.

2. This will be entwined or interlocked-
* with the chicken mesh left at the edges of the dome.

3. Doing this will help fixing the walls of the slurry tank with the dome.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
In the earlier two images, we saw-

* a hole in only one of the walls of the slurry tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]

Slide 7

Building the walls of the slurry tank

Significance of a hole in one of the walls of the slurry tank.
| style="border:0.75pt solid #000000;padding:0.071cm;"| Now let’s talk about the significance of this hole.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]

[[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| It is this hole from where-

# the slurry smoothly comes and 
# flows out to the agricultural field.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 8

Building the walls of the slurry tank

How to make a hole in the wall of the slurry tank?
| style="border:0.75pt solid #000000;padding:0.071cm;"| So how to make this hole in the wall of the slurry tank?

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| To make a hole, use the inlet pipe of 6 inches diameter.


Attention should be paid to this particular wall before fitting the pipe on it.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

[[Image:]]

[[Image:]]

[[Image:]]

<center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"| To begin with:


1. Use a scissor and cut the Chicken mesh to make a hole of 6 inches diameter.

2. Then insert the '''Steel '''rods as explained earlier-
* on either side of the 6 inch diameter hole.

3. Now lay this mesh with a hole-
* on the '''cement''' mixture spread on the '''plastic '''sheet.

4. The thickness of this '''cement '''mixture should be 1.5 inches.

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>

<center>Point where the pipe has to be placed in an upright position </center>

| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Exactly on this hole-
* place the inlet pipe of 6 inches diameter firmly in an upright position.



Before placing it, please remember- 
* to flatten the edges of the inlet pipe so that it can stand on its own.


Importantly-
* the pipe should be placed when the '''cement''' mixture is still wet.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| <center>[[Image:]]</center>
| style="border:0.75pt solid #000000;padding:0.071cm;"|
As each step is followed by another in quick succession, the mason should plan well.


This will help him not to loose time and the right moment.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| 
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Now, spread '''cement '''mixture around the pipe, using the small trowel.


This will make the pipe stand firmly.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| 
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Note that the pipe will be removed when the '''cement''' is dry. 

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| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]

| style="border:0.75pt solid #000000;padding:0.071cm;"| 
After the pipe is removed, this is how the hole would look like

|-
| style="border:0.75pt solid #000000;padding:0.071cm;"| [[Image:]]
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
The prepared walls are left for drying for two days and will be used on day 4.

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| style="border:0.75pt solid #000000;padding:0.071cm;"| 
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
This brings us to the end of this tutorial

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| style="border:0.75pt solid #000000;padding:0.071cm;"| 
| style="border:0.75pt solid #000000;padding:0.071cm;"| 
Assembly of the walls of the tank will be explained in a later''' tutorial. '''

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| style="border:0.75pt solid #000000;padding:0.071cm;"| Slide 9

Summary

In this tutorial, we have learnt :

* How to build the walls of the slurry tank.

| style="border:0.75pt solid #000000;padding:0.071cm;"| Let us summarize-

In this '''tutoria'''l, we have learnt-

* How to build the walls of the slurry tank.

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| style="border:0.75pt solid #000000;padding:0.071cm;"|  Slide 3 
 
Acknowledgements 

This video was created by:

'''Spoken Tutorial Project''' with inputs from '''Rural-ICT team, IIT Bombay.'''
| style="border:0.75pt solid #000000;padding:0.176cm;"| This video was created by-

'''Spoken Tutorial Project''' with inputs from '''Rural-ICT team, IIT Bombay.'''

|-
| style="border:0.75pt solid #000000;padding:0.176cm;"| More information on these projects can be found at these links

http://spoken-tutorial.org/NMEICT-Intro

http://ruralict.cse.iitb.ac.in/ in

| style="border:0.75pt solid #000000;padding:0.176cm;"| More information on these projects can be found at these links.

http://spoken-tutorial.org/NMEICT-Intro

http://ruralict.cse.iitb.ac.in/ in

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| style="border:0.75pt solid #000000;padding:0.176cm;"|

Pictures and technology support:

Courtesy:

'''Bhagirath Rural Development Foundation'''

'''Village- Zarap, Taluka- Kudal,'''

'''Dist.- Sindhudurg '''
 
| style="border:0.75pt solid #000000;padding:0.176cm;"| 

Pictures and technology support:

Courtesy:

'''Bhagirath Rural Development Foundation'''

'''Village- Zarap, Taluka- Kudal,'''

'''Dist.- Sindhudurg '''

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| style="border:0.75pt solid #000000;padding:0.176cm;"| 
| style="border:0.75pt solid #000000;padding:0.176cm;"| This is Bella Tony along with the animation team of the '''Spoken''' '''Tutorial''' project signing off.

Thank you for joining.

|}