Recent content by cremesti

Hi Bimr the tank is a large one 2000 m3 which I chlorinated at 10 ppm free chlorine. My question is theoretical: if I had left the isolation valve on the 10 inch pipe to the Fire Fighting pumps open which is at the bottom of the tank, how fast will the chlorine diffuse into the pipe. there...

Supposed I have a tank full of chlorinated water with 10 ppm free chlorine in it in the form of Ca(OCl)2. pH is 7.5. there is a 10 inch pipe connected to the tank how fast in m/hr will the chlorine diffuse into the pipe? is there a way to calculate a linear diffusion rate in the pipe...

I read here http://www.novinite.com/view_news.php?id=143599 that a swimming pool pump designed in line with an EU Directive slated to come into force in 2015 won an innovation award in the Plovdiv Technical Fair this week. any one have any idea what is special about this design ? this...

quick tip: u can take a water sample and add some bleach (Eau Du Javel, sodium hypochlorite) and see if any more iron comes from solution. this way u will know of u have Ferrous or Ferric only. As for your theory of Bacteria, you have to prove that; the flocs may be just FeOH3. To check if the...

BIMR is it correct to conclude then that raw sewage (black water) in itself does not contain the required bacteria to be treated properly? that you need storm water that has come into contact with earth to seed the sludge with the needed aerobic bacteria? regards rami

i used to think that feces contains in itself all the bacteria needed for its own biodegradation apparetly not thanks BIMR

got it now it is clear to me. Anoxic = No DO but there is combined O such as Nitrates Anerobic = no DO or combined O

forget the books man read all the technical documents on the sites of DOW, Hydranautics, Koch Membrane, Toray and the like lots od useful info there rami

but we use aerobic processes to break down BOD and TKN where do the aerobic bacteria in MLSS come from then? rami

Can someone tell me what is the difference between Anoxic and Anerobic zones in waste water treatment? rami

here are some tips that I have compiled http://kremesti.com/water/designing_RO_systems.htm regards rami kremesti M.Sc.

could be, might also be Hydrocarbons for oil/grease emulsion removal but I woule like to know for sure. I cannot find the EU standard that is mentionning these classes rami

C = BOD removal H = ???? N = Nitrification D = Denitrification P = Phosphorus removal Any one know what the H stands for in European waste water pollutant reduction standards??? thanks rami

hi BIMR this system is the piping system after the storage tanks for desal water (desalinated sea water using MSF desalination). no corrosion inhibitor is currently being used. the potable water system comes downstream. also there the LSI is -ve despite the remin filters. the pH is too low...

hey guys i have a galvanized steel network for my desalinated sea water in which i found about 3.8 ppm of Zinc is this a sign of corrosion? is galvanized steel a bad choice of material for desal water (conductivity about 10 uS/cm)? Should I be dosing phosphate as a corrosion inhibitor? i...