Comments on: USHCN Waste Water Treatment Plants

By: Evgeniy Tic

Evgeniy Tic — Wed, 05 Nov 2008 20:21:50 +0000

I know that CO2 can be used to low the pH and to removal phosphorus in a wastewater treatment plant.

By: Larry

Larry — Mon, 07 Jan 2008 17:44:53 +0000

Anthony, FWIW, that last picture is a headworks, and that’s “influent”, not “effluent”.

Most sewage treatment process don’t make a lot of heat, but there are a few that do; anaerobic sludge digestion, sludge incineration (!), flaring of digester gas, and enriched O2 digestion. It’s not obvious from these photos that any of these processes are present in these plants, but there are enough standard bad siting practices (near A/C units, etc.) for these stations to be suspect.

By: SteveSadlov

SteveSadlov — Mon, 07 Jan 2008 17:20:15 +0000

BTTT.

By: SteveSadlov

SteveSadlov — Mon, 07 Jan 2008 16:57:43 +0000

Anthony did a really good job of presenting and answering interview questions this morning on KSFO 560 AM (San Francisco) a reasonably high powered station covering the entire SF-SJ-OAK Metro (4th largest media market in the US) a large area of its hinterlands and even part of the Sacramento Metro. Needless to say, being during morning drive time, many heard it. The talk host is also a meteorologist (and ex KCBS, Channel 5, San Francisco weathercaster). The interview featured Surface Stations, presenting a compendium of the site and the activities (and volunteers) underpinning it. It also included a specific mention of the subject matter (and,ahem, certain other sorts of … um …. matter) relevant to this thread. Kudos!

By: Tamara Garcia

Tamara Garcia — Wed, 07 Nov 2007 08:42:55 +0000

I know that CO2 can be used to low the pH and to removal phosphorus in a wastewater treatment plant. I would like to know the quantity (grafic CO2/pH) and what pH is normaly there before the secundary treatment. Do you know some other uses of CO2 in a wastewater treatment plant?

By: Al

Al — Tue, 24 Jul 2007 18:50:39 +0000

“How does one measure a temperature increase in the sea?”

By changing the type of bucket and the standard practices within the time period of observation. AKA – exactly the same way they do the land measurements – egregiously.

By: Geoff Sherrington

Geoff Sherrington — Mon, 23 Jul 2007 05:44:55 +0000

The weather stations on land are a mess as shown, but following the debate on the Great Global Warming Swindle, one of the Australian profs said that the land temperature measurements agreed with sea measurements so they must both be right (???). If CA contributors continue to show many bad land stations, does this mean that the Team response will be to show lots of good sea stations? I am simple minded. How does one measure a temperature increase in the sea? Does one measure right down to the bottom of the sea, take spot readings every x metres, smooth them, adjust them, avearge them, project them up into the sky and down into the basement? What assumptions are made in these models? Can they produce a hockey stick?

By: steven mosher

steven mosher — Mon, 23 Jul 2007 00:30:33 +0000

all of the siting issues are covered by the anomaly method and the homogenieity
adjustmenst.

you have 10 bad sites that show a 2C warming
you have 10 good sites that show no WARMING.

“homogeneize them.” Have each show a 1C warming.
Then hide the code for your adjustment.

THERE IS A REASON why gavin suggested that I just look at the good sites.
the reason is that the “adjustments” impute warming into sites that show no warming.

By: M. Simon

M. Simon — Sun, 22 Jul 2007 08:15:33 +0000

#2 Steven,

It seemed like a good idea at the time.

By: Andrey Levin

Andrey Levin — Sun, 22 Jul 2007 07:21:17 +0000

Sewage Treatment Plants (STP) appears to be lousy spot to place weather station. STP technology evolved with time. At first it was simple settling ponds, than activated sludge lagoons were added, than anaerobic digesters. Activated sludge ponds are constantly aerated, giving up substantial amount of CO2 and water vapor. Anaerobic digesters biodegrade primary and excess activated sludge, producing substantial amount of biogas ‘€” 65% CO2 35% methane by volume. Methane is combusted on the spot, sometimes in boilers, sometimes in diesel-generators. Excess heat is used to keep digesters (huge circular capped concrete tanks) at temperature optimum for mesophilic microorganisms ‘€” 35 degree C, day and night, 365 days a year. Amount of sewage increased faster than population, and is usually close to 200 gallons per capita per day. Water vapor, CO2, rejected heat from exhaust and anaerobic digesters ‘€” enough to bias temperature measurements up as STP technology evolved and amount of treated sewage increased over time.