The 4 Main Chambers & Fittings

The 4 mains chambers up with major fittings purchased
(1st October 2010, Friday)

Minor Changes made to PFD Below:

1. Scrubber bypass inserted to test for H2S Removal with and without scrubber
   (compare with September post)
2. Repositioning of CV on center 1" pipe to permit gas flow.
3. All parts after methane capture to be made of metal.

The 4 main chambers are up:

All the valves and fittings I & Marcus have bought within the last week
(estimated costs = $500):

The 2 cans on the bottom left depict PVC Cement; an industrial grade glue (2 types) used to provide air-tight sealing and mechanical strength. - Apply glue one 1st, then use glue 2 to "force" glue 1 inwards the pipes.




The picture below depicts "level gauge valves". Rather than using multiple valves, pipes and tee-joints to create a sight glass (see tube right of anaerobic stage), the 4-way valves below comes in a pair (top and bottom for sight glass) reduces the length of piping connection. Downside: 1 set costs $170. The group went against the idea of using these valves as the metallic parts have adverse efftects on fermentative bacteria growth; unfortunately, PVC-type Level Gauge valves are not available in the market.

 

The group happened to stumble upon this flight of steps; we had always wanted to steps to be attached to the digestor to facilitate easy loading, but Dr Han explained it was to costly. If these steps are "unwanted", we would be integrating them as part of the digestor - awaiting Dr Han's reply.

  

Attempted to climb it; it was extremely stable; loading port may be easily reached, even for Brenda's height.

Plans for 04/10/10 to 10/10/10:

Monday:

1. PI Connectors x2
2. 1" x 3/4" Reducers for Sight Glass x2
3. Threaded N-caps for outlets/inlets
4. U-bends for Check valves x2 - Check if blocking reducers
5. 90 degrees metal elbow for PSV outlets x2 - Rain protection
6. KH to contact Citigas for Totaliser
7. To fully construct system
8. Contact Vacuum Truck
9. Uncle Chris to store Waste from Camp

Tuesday:

1. To transport prototype 2 to SVF
2. Orange Digestor Loading
3. Prototype 2 Loading - Read operating Procedure

As Individuals:

• KH: Lit Review
• Marcus: H2S investigation
• Brenda: Sketch-ups, SG Map & Logbook

Kian How, signing off at 5.45 pm, 02/10/10.