Sewage Discharge Notification

Subject: Re: Sewage Discharge Notification Sat Nov 03, 2012 8:56 am

Don't know whether this was real or not because it says "Test Test Test" on the first line and not sure that it had actually been raining...
Hammersmith - Nov 2, 2012, 1:55 PM

Quote :: Test Test Test

Rower notification from Thames Water: Hammersmith Pumping Station (PS)

Following the recent rainfall, Hammersmith PS has in the last hour discharged untreated storm sewage into the River Thames, due to lack of capacity in the existing sewer network.

We are working hard to develop the Thames Tideway Tunnel to address the unacceptable volume and frequency of these discharges.

The proposed tunnel would capture flows from the 34 most polluting 'combined sewer overflows' (CSOs) discharging to the river, including Hammersmith PS, and transfer the sewage to our works at Beckton in east London for treatment.

For more information view www.thamestunnelconsultation.co.uk

Subject: Re: Sewage Discharge Notification Sun Nov 04, 2012 7:40 am

Mogden - Nov 3, 2012, 1:14 PM

Quote :: Rower notification from Thames Water: Mogden Sewage Treatment Works (STW)

Within the next hour, Mogden Sewage Treatment Works will be discharging heavily diluted storm water into the River Thames.

Storm water is screened, settled in tanks and mixed with fully treated wastewater before it reaches the river.

We regret the necessity to discharge partly treated effluent in this way. Improvements are already under way at Mogden to reduce the chance of this happening in the future.

Until this essential work is done, London's sewer network - which is Victorian - and other facilities will remain overstretched. This means that after heavy rain there is simply nowhere else for excess storm sewage to go, which is why these discharges, though regrettable, are legal and consented.

Subject: Re: Sewage Discharge Notification Sun Nov 04, 2012 10:39 am

No great surprise this morning:
Mogden - Nov 4, 2012, 9:19 AM

Quote :: Rower notification from Thames Water: Mogden Sewage Treatment Works (STW)

Within the next hour, Mogden Sewage Treatment Works will be discharging heavily diluted storm water into the River Thames.

Storm water is screened, settled in tanks and mixed with fully treated wastewater before it reaches the river.

We regret the necessity to discharge partly treated effluent in this way. Improvements are already under way at Mogden to reduce the chance of this happening in the future.

Until this essential work is done, London's sewer network - which is Victorian - and other facilities will remain overstretched. This means that after heavy rain there is simply nowhere else for excess storm sewage to go, which is why these discharges, though regrettable, are legal and consented.

Subject: Re: Sewage Discharge Notification Sun Nov 11, 2012 4:11 pm

The official "TAC" sewage discharge notification log is now live at:
http://sdn.rivertac.org/

Subject: Re: Sewage Discharge Notification Sun Nov 11, 2012 5:59 pm

Good work Ed.

Richard

Subject: Re: Sewage Discharge Notification Mon Nov 12, 2012 4:58 pm

Well done Ed Smile

Subject: Re: Sewage Discharge Notification Wed Nov 21, 2012 12:18 pm

From @Thameswater 21/11/12 11:13 In next hour #Mogden STW discharging storm water to River #Thames #sewage http://sdn.rivertac.org

Subject: Re: Sewage Discharge Notification Mon Dec 24, 2012 9:07 am

Havn't posted these up on here for a while, they have of course been continuing throughout this wet period, http://sdn.rivertac.org

Thu 22 Nov 2012 11:28 Mogden
Sat 24 Nov 2012 14:06 Mogden
Sat 24 Nov 2012 15:40 Hammersmith
Mon 03 Dec 2012 09:55 Mogden
Tue 04 Dec 2012 13:04 Mogden
Wed 05 Dec 2012 16:38 Mogden
Fri 07 Dec 2012 09:24 Mogden
Tue 11 Dec 2012 22:09 Mogden
Wed 12 Dec 2012 21:57 Mogden
Thu 13 Dec 2012 13:03 Mogden
Fri 14 Dec 2012 11:03 Mogden
Fri 14 Dec 2012 14:11 Hammersmith
Sat 15 Dec 2012 20:11 Mogden
Sat 15 Dec 2012 20:12 Mogden
Sun 16 Dec 2012 13:28 Mogden
Mon 17 Dec 2012 15:01 Mogden
Wed 19 Dec 2012 21:11 Mogden
Sat 22 Dec 2012 08:03 Hammersmith
Mon 24 Dec 2012 08:51 Hammersmith

Subject: Re: Sewage Discharge Notification Tue Dec 25, 2012 10:07 am

Merry Christmas from Hammersmith pumping station:

Quote :: Tue 25 Dec 2012 07:30 Hammersmith
From:Rower.Notification@thameswater.co.uk

Rower notification from Thames Water:Hammersmith Pumping Station (PS)
Following the recent rainfall, Hammersmith PS has in the last hour discharged untreated storm sewage into the River Thames, due to lack of capacity in the existing sewer network.
We are working hard to develop the Thames Tideway Tunnel to address the unacceptable volume and frequency of these discharges.The proposed tunnel would capture flows from the 34 most polluting 'combined sewer overflows' (CSOs) discharging to the river, including Hammersmith PS, and transfer the sewage to our works at Beckton in east London for treatment. For more information www.thamestunnelconsultation.co.uk
RegardsThames Water

On the bright side, the Mogden improvements are scheduled to be completed in the spring, so that's one big source of discharges that we should see the back of in 2013.

Subject: Re: Sewage Discharge Notification Thu Jan 24, 2013 7:15 pm

Discharges since Christmas, been going off every day this week:

Thu 24 Jan 2013 12:25 Mogden

Wed 23 Jan 2013 11:50 Mogden

Tue 22 Jan 2013 19:59 Mogden

Mon 21 Jan 2013 13:43 Mogden

Sun 20 Jan 2013 17:52 Mogden

Sat 19 Jan 2013 22:10 Mogden

Mon 14 Jan 2013 21:36 Mogden

Fri 04 Jan 2013 16:47 Mogden

Thu 03 Jan 2013 12:37 Mogden

Wed 02 Jan 2013 12:37 Mogden

Mon 31 Dec 2012 12:10 Mogden

Subject: Re: Sewage Discharge Notification Wed Jan 30, 2013 8:31 am

A few more, getting notifications from Hammersmith again the last couple of days

Wed 30 Jan 2013 05:19 Hammersmith
Sun 27 Jan 2013 06:46 Hammersmith
Fri 25 Jan 2013 12:38 Mogden

Subject: Re: Sewage Discharge Notification Sat Aug 24, 2013 8:07 pm

With all the rain today, not surprised that Hammersmith discharged at 13:36

Quote :: Rower notification from Thames Water: Hammersmith Pumping Station (PS)

Following the recent rainfall, Hammersmith PS has in the last hour discharged untreated storm sewage into the River Thames, due to lack of capacity in the existing sewer network.

We are working hard to develop the Thames Tideway Tunnel to address the unacceptable volume and frequency of these discharges.

The proposed tunnel would capture flows from the 34 most polluting 'combined sewer overflows' (CSOs) discharging to the river, including Hammersmith PS, and transfer the sewage to our works at Beckton in east London for treatment.

For more information view www.thamestunnelconsultation.co.uk

Disappointing though that Mogden went off, at 16:44. Presumably the new tanks will have contained the worst of the "first flush" though.

Quote :: Rower notification from Thames Water: Mogden Sewage Treatment Works (STW)

Within the next hour, Mogden Sewage Treatment Works will be discharging heavily diluted storm water into the River Thames.

Storm water is screened, settled in tanks and mixed with fully treated wastewater before it reaches the river.

Work has been carried out at Mogden to increase the treatment capacity during and after heavy rain in our catchment. Regrettably, there are still times that this capacity is exceeded, and with nowhere else for the excess storm sewage to go, these discharges to the river are legal and consented.

Regards
Thames Water

Subject: Re: Sewage Discharge Notification Sat Aug 24, 2013 8:16 pm

Mogden went as on the high tide, and a big one. Its a known issue when the tide back fills into the storm tanks. Ed has a got a full explanation somewhere if anyone is interested.

Posts : 90 Join date : 2011-09-08 Location : woolwich

"these discharges to the river are legal and consented."

legal & consented they may be, but still a disgrace in this day & age. Sad

Posts : 2435 Join date : 2010-01-28

This is why I had zero interest in Modgen's open day we were invited to recently, where they could congratulate themselves on the new increased capacity.

I knew they'd still be polluting the river. Amazing with all that money spent they didn't design it to be perfect.

Subject: Re: Sewage Discharge Notification Sat Aug 24, 2013 11:24 pm

Steve Holmes wrote:: This is why I had zero interest in Modgen's open day we were invited to recently, where they could congratulate themselves on the new increased capacity.

I knew they'd still be polluting the river. Amazing with all that money spent they didn't design it to be perfect.

Steve, none of "it" will ever be "perfect", to be perfect you would have to remove the population from its catchment and make it...

Aside from that impracticle truth, once the tunnel is built and the CSOs made accountable and the implementation of the Water Framework Directive (a watered down - or rather UK designated compromise on its final shape), we will have a reasonable balance.

Beyond that we must see green infrastructure become policy, so that in 50 years time we will hopefully be in a position to see a 'best case scenario' for perpetuity.

The fight for the river and its improvement will never end, the 'restoration' of the Thames is judged by many measures, like yours (I believe) my measure is almost 'evangelical' in its extreme belief that it should be unsullied and we will never see the river as it should be, thank Izaak for small mercies, for we have little else.

Amen!

Richard Wink

Subject: Re: Sewage Discharge Notification Sat Aug 24, 2013 11:26 pm

here,here mr holmes. a disgrace indeed. affraid

Subject: Re: Sewage Discharge Notification Sun Aug 25, 2013 12:42 am

This is what happened back in May and we challenged it.

(Today it was again on a big tide, 5.1m in fact with the high at 5pm. So any affect will have been hugely diluted. Yes its never going to be good but in this instance there is an explanation. )

Just on the 81000m3, we challenged it as well, this is what they came back with and are pretty satisfied with the reply.

The situation on 28th May was a result of two factors. Earlier in the day, heavy rainfall had caused the works to begin to fill its storm tanks. All of tanks (except tank 8 - explanation below) were filled. Normally, following the cessation of the high rainfall, the tanks would have been emptied back through the process and treated along with the incoming flow. On this occasion, however, the works became ‘hydraulically locked’, due to a very high spring tide that the EA alerted us to the previous day.

This simply means that the level of the river became so high at the peak of the tide, that it actually ‘backs up’ the treatment process , and prevents the treated effluent from discharging under gravity. While this high tide effect persisted, the incoming flows had to be diverted to fill tank 8, which is kept empty expressly for this purpose, but this tank filled very quickly because of the high incoming flows. As the tidal effects ebbed away the process controllers began to open the flow to treatment again. If they had done this any earlier, saline water intrusion into the works could have killed the bugs and caused a breakdown of the treatment process. However, 81000m3 had discharged to the river by this time.

High tide impacts are a recognised feature at Mogden, and covered in our permit from the EA, but are not entirely predictable. The lunar cycles, that have the greatest impact, occur twice a year, but the severity of each event will be affected by the river flow at the time, as well as off shore storms. In addition, the operation of the Thames Barrier can have an effect. The EA will notify us of the severity and predicted duration of these events as they occur. On this occasion, the notification expected the tides to remain high for a duration of 5 days .

Had the heavy rainfall not preceded this particular high tide event, it is highly unlikely that Mogden would have discharged to the river at all, as the overall capacity of balancing tanks (storm or otherwise) is some 90,000m3, and the volume discharged was 81,000m3.

Whether that is a suitable explanation or not is up to each of you to decide, but given what it was before the expansion of Mogden, its a massive amount better, but hey that's just my uneducated view. And that view is that the critical juvenile fish areas below Richmond are more protected now than they have been for decades.

Subject: Re: Sewage Discharge Notification Sun Aug 25, 2013 8:28 am

The bigger tanks do at least mean that the discharge will be only storm water and all the really poisonous "first flush" poo, unflushable wipes, fatbergs etc get captured.

Subject: Discharge notification - Hammersmith Sun Oct 13, 2013 11:19 am

From:Rower Notification
Sun 13 Oct 2013 11:02 BST

Rower notification from Thames Water: Hammersmith Pumping Station (PS)
Following the recent rainfall, Hammersmith PS has in the last hour discharged untreated storm sewage into the River Thames, due to lack of capacity in the existing sewer network. We are working hard to develop the Thames Tideway Tunnel to address the unacceptable volume and frequency of these discharges. The proposed tunnel would capture flows from the 34 most polluting 'combined sewer overflows' (CSOs) discharging to the river, including Hammersmith PS, and transfer the sewage to our works at Beckton in east London for treatment. For more information view www.thamestunnelconsultation.co.uk
Regards
Thames Water

Subject: Re: Sewage Discharge Notification Sun Oct 13, 2013 2:56 pm

Seen that Mogden went as well, how and why, its not a high tide? Email sent to one of the top people.

I was down there earlier this week and these are the overflow capacity tanks, hmmm

Sewage Discharge Notification - Page 14 Wp_00010

Far end it the sill where, if it fills up, it overflows into the river. The overflow goes out with the normal clean water discharge, so will be quite diluted depending how how much. Plus by the time is does get to overflow, the main solids have settled on the bottom.

Interestingly the amount of flow coming out by Isleworth Ait is something like 1200+ MLD, so far more than is currently going over Teddington. That means the down stream tidal flow is in part coming from the STW.

Sewage Discharge Notification - Page 14 Wp_00011

Sewage Discharge Notification - Page 14 Wp_00012

Subject: Re: Sewage Discharge Notification Wed Oct 16, 2013 8:29 pm

There was another one earlier today

Rower Notification wrote:: Wed 16 Oct 2013 14:45 BST

Rower notification from Thames Water:Hammersmith Pumping Station (PS) Following the recent rainfall, Hammersmith PS has in the last hour discharged untreated storm sewage into the River Thames, due to lack of capacity in the existing sewer network. We are working hard to develop the Thames Tideway Tunnel to address the unacceptable volume and frequency of these discharges. The proposed tunnel would capture flows from the 34 most polluting 'combined sewer overflows' (CSOs) discharging to the river, including Hammersmith PS, and transfer the sewage to our works at Beckton in east London for treatment. For more information view www.thamestunnelconsultation.co.uk

Subject: Re: Sewage Discharge Notification Sun Oct 20, 2013 6:53 pm

Quote :: Sun 20 Oct 2013 16:09 BST Hammersmith
From:Rower Notification

Rower notification from Thames Water:Hammersmith Pumping Station (PS) Following the recent rainfall, Hammersmith PS has in the last hour discharged untreated storm sewage into the River Thames, due to lack of capacity in the existing sewer network. We are working hard to develop the Thames Tideway Tunnel to address the unacceptable volume and frequency of these discharges. The proposed tunnel would capture flows from the 34 most polluting 'combined sewer overflows' (CSOs) discharging to the river, including Hammersmith PS, and transfer the sewage to our works at Beckton in east London for treatment. For more information view www.thamestunnelconsultation.co.uk Regards Thames Water

Quote :: Sun 20 Oct 2013 17:31 BST Mogden
From:Rower Notification

Rower notification from Thames Water: Mogden Sewage Treatment Works (STW) Within the next hour, Mogden Sewage Treatment Works will be discharging heavily diluted storm water into the River Thames. Storm water is screened, settled in tanks and mixed with fully treated wastewater before it reaches the river. Work has been carried out at Mogden to increase the treatment capacity during and after heavy rain in our catchment. Regrettably, there are still times that this capacity is exceeded, and with nowhere else for the excess storm sewage to go, these discharges to the river are legal and consented.

Posts : 596 Join date : 2013-05-28

bring on the big tubey thing please. sorry if it goes under your garden or makes you late for work. but am fed up with reading "we are releasing x y z amount of sewage into your river please don't worry about it if it kills any fish-invertibrates eventually we might pay for it"

Subject: Re: Sewage Discharge Notification Mon Nov 04, 2013 10:05 am

Hammersmith discharged last night Nov 3, 2013, 9:36 PM

Mogden then followed Nov 4, 2013, 1:55 AM Evil or Very Mad

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