Smart Pneumatic Waste Conveyance System (PWCS)

[Cecil Lee]

Case Study 1A: The " Smart Pneumatic Waste Conveyance System (PWCS) to optimise the deployment of resources for cleaner and fuss-free waste disposal"

1. In my opinion, Hong Leong /CDL seems to be an early adopter of this Pneumatic Waste Collection System in many of of their new developments.

1.1. For this HDB BTO November 2020 launch, Champion Bliss, Urbanville, Tampines GreenCrest, Tampines GreenGlade, Tampines GreenOpal, Parc Residences all have this "SMART" PWCS.

1.2. Hopefully, the addition of the word SMART is something that is different from any of the past PWCS.

1.3. In fact, a PWCS or maybe not so "smart" ones will be installed at a condo = Forett , HDB Plantaion Village (Nov 2019), Tampines GreenWave, Tampines GreenGem etc...

2. For example, when The Venue (a CDL project) had just T.O.P.:-

3. This signage (see above) was displayed at the common bin. There are like Twelve (12) cautionary: what not to:-

4. There was a cautionary sign with lots of Don'ts.

5. A while back at The Criterion also by CDL. This notice (User guide) was displayed at the common bin area:-

6. Hopefully, the residents may come to terms to avoid doing all these don'ts:-

7. If managed properly, one can understand the savings in terms of maintenance costs (if any)... and good for the daily Cleaners.

8. Presently not all other Developers follow this lead. Thus with the manual system, although there are occasional issues; but less so.

Case Study 1B: Plight of residents of HDB Yuhua BTO which was installed also with the Pneumatic Waste Collection System (PWCS).

9. As expected. It takes just one or two inconsiderate residents to make a mess of this system...

10. Imagine 4 years and more of tolerance.

11. Residents reported:-

12. Persistent odour

13. Foul smell exuding from the centralised bin centre at Blk 223A of Jurong East Street 21 has been a persistent problem in Yuhua since the PWCS started.

14. According to a recent report from the Chinese evening newspaper Lianhe Wanbao, residents have been bearing with the smelly environment for the past four years.

15. Some residents also feedback of bulky items such as large soft toys, cardboards and mattresses, which choke up the pipe network. The cleaners will have to manually clear these items from the PWCS.

16. The success depends on the users of the PWCS.

17. There is no other choice for such estates.

18. On 30 July 2022 @ Alkaff Lakeview:

Can happen anywhere from high end condos, ECs and HDBs.

[Cecil Lee]

Extract: Reflections at Keppel Bay

20 June 2020 

This is to update you that the specialist has manually removed the pile-up rubbish at the discharge valves (dv) including all blockages caused by the discharge of non-permitted items.

Hi-jetting was also carried out to remove the sludges and blockages along the main conveyance pipes during the recovery process.  The presence of the non-permitted items i.e. wood, umbrella, carton box, etc. and the presence of sludge in the system had made the recovery a challenging one. Appended overleaf please find some pictures of the non-permitted items found during the recovery process.

We advise all residents to refrain from throwing non-permitted items into the system as any resultant system failure will entail much inconvenience to the residents as one will experience smells and flies emanating from the choke refuse during the recovery process.

The system would have to be shut down indefinitely until it is restored. The recovery timeline would depend on the severity of such chokages. Unfortunately, the system is still experiencing loss of air as a result of another severe blockage found between B1 and B2 conveyance pipeline. An iron and umbrella frame were found amongst the blockages. The specialist is still in the midst of working on it.

You will be updated once the system is restored. MCST would at the same time like to offer a reward of S$200/- to anyone or a group of person who could witness such occurrence of anyone misusing the system and disposing non-permitted items and provide evidence that lead to an arrest and/or prosecution.

You will be updated once the system is restored MCST would at the same time like to offer a reward of S$200/- to anyone or a group of person who could witness such occurrence of anyone misusing the system and disposing non-permitted items and provide evidence that lead to an arrest and/or prosecution.

Witnesses are advised to raise the alarm to our security officer on-duty at the security post as a police report will be lodged immediately to facilitate the MCST to seek recourse from the culprit.

The Management
Reflections at Keppel Bay

 

[Cecil Lee]

Another notice. This time at The Tembusu

1. Do not throw newspapers or any large chunk of paper or paper cartons as they will be entangled in the pneumatic chute. Likewise for cloths or clothing, which are soft and easily entangled.
2. Heavy object like electrical appliances are too heavy, the suction is not strong to carry the items all the way to the bin centre.
3. Liquids are prohibited, they will affect the pneumatic system.
4. Used Pizza boxes should be cut to size.
5. Please bag your trash and keep the trash bag size to less than 25cm.

[Cecil Lee]

Around 1985 to 1990’s common place for a bin centre to be located at the centre of some car parks:

Another location: Yishun. For this Yishun site, equally common to find the Electrical Sub Station beside this bin centre.

The Electrical Substation:-

[Cecil Lee]

Foul smell woes over new waste collection system in Bidadari... 

Source and Credit:

:

[Cecil Lee]

1940’s Back wall rubbish chute of a house or shop.

A normal adult cannot climb through.

Source and Credit:

[Cecil Lee]

MIDWOOD CONDO

PNUEMATIC WASTE CONVEYANCE SYSTEM (P.W.C.S.)  AT MIDWOOD CONDO
WITH A WARNING NOTICE OF DAILY PNUEMATIC OPERATING SCHEDULE

MEANS: DON'T OPEN ME AT THE WRONG TIMING!

YOU ARE STRONGLY ADVISED TO AVOID USE AT THE ABOVE TIMINGS

Midwood Resource: