Loading of Both Grey and Orange Digestors with Animal Waste on 12 November 2010 (Friday)

 
To get comparative results, we loaded both grey and orange digestors with the same batch of waste; ie concentration was exactly the same - to obtain fair comparison of results:

This was how the manure look like in the grey digestor (human waste); before we replaced it with cow dung.

There it is - 90L of pure cow dung - collected by brenda and marcus on thursday; we spent almost $100 on transportation yesterday - renting a van, etc:

Manually mixing the cow dung so the it solubilizes in water; to attain an optimum concentration of 10-12%:

Here's one crazy fellow who put her whole arm into this pail of shit without gloves!

Click on image to zoom in on her hands!

Completed manually mixing "shit" with water after 2hrs+:

Close-up of the cow dung (12% concentration by volume) :

The vacuum  truck in action:

Sorry Brenda! What if Marcus was the camera man and his reaction is slow towards the end of the video clip? He'll get into deep shit !!

That was why the clip stopped suddenly. Great Reaction for jumping away, Brenda !!

The much awaited 5-gas detector; yet to learn to use:

Testing of the manual digestion processes would commence on a daily basis with effect from 17/11/10. However, gas testing would only be done ONCE at the end of the experiment to ensure minimal loss of biogas.

In doing so, this also ensures complete anaerobic conditions in the orange digestor which has no check valve mechanism - opening the air valve would introduce oxygen into the system - undesired.

In summary, to do next Wednesday - hari raya:

1) all 3 to be present on wed; double-D sampling (full day) - Brenda inform uncle chris

2) denise, hopefully, can come down to help - marc call

3) brenda - potassium test - monday

4) HAZOP on wed, all 3 to bring laptops (KH + Marc HAZOP, Brenda logbook)

5) Kang Kong seeds - buy from nursery

6) Hose - Marc

7) Data logger - Marc/ KH

8) Chain and lock for trolley

9) Fittings - Marc

10) Testing on Thurs/Fri/Sat in pairs
11) Sticker Labels on Grey Digestor - KH

12) Plant Nutrients Deficiency Read-up (Marcus to read KH's Link)

13) Talk for Juniors?

Kian How, signing off on 12/11/10, 11.10 pm.