What is your job?
- Thread starter Squidward
- Start date
Primarily an HVAC Service Tech and a DAD now.
Formerly: plumber, electrician, carpenter, fire/burg. alarm install, CCTV install/service, avionics tech for the USN, printing press operator, auto mech., forget what all else. The best of them all ......... DAD.
Formerly: plumber, electrician, carpenter, fire/burg. alarm install, CCTV install/service, avionics tech for the USN, printing press operator, auto mech., forget what all else. The best of them all ......... DAD.
johnptc;936915; said:
no, we do not have any type of nitrate reducing systems at our plant.
we are primarily concerned with the removal of ammonia and phosphorus (and of course suspended solids) as our final effluent is discharged to a local creek that is a sensitive reciever due to a high fish population.
the wastewater treatment process does remove some nitrate itself, as nitrogen gas in the primary treatment processes. You can get some denitrification going on in the primary settling tanks that is seen as bubbles of nitrogen gas..
but our certificate of approval (what water quality parameters we are required by law to meet) does not specify a specific nitrate level, only an ammonia nitrogen concentration that we must meet.
For example, last month, our raw untreated sewage had an average ammonia level of 18.0 mg/L.
our treated effluent out to the creek had a level of 0.06mg/L.
Our plant is run very efficiently, as our objective for ammonia, for example, is less than 3.40 mg/L monthy average this time of year.
and we are discharging 0.04 to 0.06 mg/L on average.
It is very important that we maintain a high quality of effluent, to protect both the local environment (the creek) and to protect public health
(if sewage is not treated properly, people can get sick)
Typically though, the nitrogen in the form of nitrate that we are discharging is less than 20mg/L.
But its the ammonia of course, that is critical to the fish population.
to elaborate a bit on my last post, total nitrogen loading to the creek is monitored and specified at our plant.
ammonia itself is an issue of course because of the fish population.
but so is total nitrogen loading to the creek as excessive nitrogen loading can lead to algae blooms.
ammonia itself is an issue of course because of the fish population.
but so is total nitrogen loading to the creek as excessive nitrogen loading can lead to algae blooms.
