The Mattabassett district wastewater treatment facility. By Stephen Schneider December 11, 2007. WWT in Cromwell, Connecticut, USA. Location. Located half way between New York City and Boston, on the Connecticut river. Location. Location. It is located 40km f r om the Long Island Sound.
By Stephen Schneider
December 11, 2007WWT in Cromwell, Connecticut, USA
Located half way between New York City and Boston,
on the Connecticut river.
It is located 40km from the Long Island Sound.
18 million gallons per day (0.8 m3/s) from 120,000 residents in: New Britain, Berlin, and Cromwell.
$6.4 million USD per year = 115 million kc per year
The plant can also accept and treat septage from septic tank cleaning trucks and liquid biosolids from other waste water treatment plants.
What goes out:
8 to 10 mg/L total nitrogen resulting in a yearly nitrogen credit bill of only $5000 USD.Treatment plant specifications
Four P.C.s hold the water for 2.5 hours.
After the belt press removes 75% of the water, sludge is incinerated in a fluidized bed incinerator that contains 19 tons of sand at 760°C. In addition to the sludge the incinerator also uses air from near the belt press to reduce odor.
The ash is blown out the top of the incinerator with the exhaust gases. To remove the ash from the air water is used. This resulting water/ash mix is then left in a lagoon to dry and then is sent to a landfill.