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waste water treatment plant

3 replies [Last post]
Mon, 2010-08-09 10:09
Rola Sabbah
User offline. Last seen 11 years 37 weeks ago. Offline
Joined: 5 Dec 2009
Posts: 61
Groups: Civil Engineering, Women in Planning & Scheduling (WiPS)
HI every body
i have a new project which is waste water treatment plant, any help by descriping how the elements work together ? any discription about how these plants work?
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Replies

Mon, 2012-02-06 19:12
#1
Saeed Shaikh
User offline. Last seen 12 years 37 weeks ago. Offline
Joined: 12 Jan 2012
Posts: 2
Groups: None

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Mon, 2010-08-09 15:19
#2
Samer Zawaydeh
User offline. Last seen 6 years 20 weeks ago. Offline
Joined: 3 Aug 2008
Posts: 1664
Groups: Civil Engineering, Regional Representatives
Dear Rola,

This is like any other project, you need to start with

Material Submittals (civil, electrical, mechanical and maybe chemical)
Engineering Drawings
Procurement
Construction
Testing and Commissioning
Handing Over

What Gary is describing is the actual process. It is wounderful to be able to understand it in order to be able to monitor the construction and record the progress. Of course, you will be able to identify the Changes from design as well.

Review the BOQs for the material, and the Issued For Construction drawings for the shop drawings to be prepared, and then sit with the Construction team to determine the sequence of construction.

With kind regards,

Samer
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Mon, 2010-08-09 11:40
#3
Gary Whitehead
User offline. Last seen 6 years 6 weeks ago. Offline
Joined: 24 Mar 2009
Posts: 1215
Groups: Building Information Modelling, Content Moderators, Petro-Chem / Oil & Gas, The GrapeVine
There are a number of different potential treatment options, so the below is fairly generic. Do you not have any kind of scope or spec to work with?

-Screens & screenings handling plant (metal mesh to filter out major detritous which could harm pumps, etc. Screenings handling might be washing it & conveying to skips)
-Stone / grit removal (eg constant velocity grit channels with dredging pump)
-Inlet pumping station
-Primary Settlement tanks (floating scum removed from the top, settled sludge removed from bottom via bellmouth)
-Biological treatment –either
a) Aeration lanes (settled sewerage passes through aerated channels seeded with bugs which eat biological matter)
b) mineral beds (sewerage trickles through the packed mineral beds, with the bugs seeded on top)
-Final Settlement Tanks (similar process to PSTs above)
-Effluent outflow

In addition, the sludge taken from PSTs and FSTs has it’s own process stream:
Sludge storage tanks
Sludge thickening / dewatering
Then 1 or more of the following :
a) anerobic digestion tanks, with gas being recovered as renewable energy
b) Liming plant to reduce odour & raise ph
c) Incineration
d) Thermal drying (export to agriculture)
e) Pasteurisation
f) Thermal Hydrolysis


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