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It seems as if the source of the high levels of COD is vegetable processing (baking and frying) and the cleaning of the equipment. Lab tests show that the dissolved COD increases during the cleaning process.

Muggle, I appreciate your response and have found it to be very helpful. However, I have further questions regarding protein skimmers and aerobic bacteria. You were correct in assuming that the cause of the high levels of COD were due to fogs. Secondly, to clarify, the dissolved COD is as...

Can anybody help me find some options for treating wastewater with a high level of dissovled COD (as high as 2000 mg/l). Is ultrafiltration capable of removing dissolved COD? System requirement: 20000 gpd of wastewater. Also could somebody provide me with ballpark figures on possible options...

hydrae I appreciate your response, but i was more interested I was interested in the potential of using solar pv cells, wind turbines, geothermal, biomass, hydrogen, or fuel cells at water treatment/purification facilities. thank you illhp

Does anyone know of any water treatment/purification plants that are using renewable energy sources? If so what type and for what purpose? Has anyone found any innovative energy efficiency/conservation ideas to apply in a water treatment/purification facility?

The natural gas price is approximately $4/mmbtu and the pressure of the steam is about 125 psig. I don't know what the temperature of the feedwater would be.

Anybody know how i can calculate the marginal costs of steam generated through cogeneration or have any rules of thumb? ($ per unit of usable heat energy)

By raising the temperature, the temperature difference between the controlled environment(inside) and uncontrolled environment(outside) will decrease. Therefore the conductive losses will also decrease. The energy savings would be equal to the Ufactor * the area * the increase in the...

Are there any disadvantages to ducting outside air for compressor intake? I have heard that using outside air for intake can lead to damage of airends in rotary screw compressors. Is this true?

the title explains it all.

How would one go about calculating the solar heat gain through a window? What specs of the window would be needed and what formulas would be used? Additionally, besides conductive heat loss and solar heat gain what other significant types of heat transfer can be calculated for windows?

Are there are special considerations for windows in chemical and pharmaceutical plants?

Are there any studies that have proven heating savings due to air destratification? When is destratification a good option and what kind of savings can be anticipated?

how do the costs of powders compare with resins and pigments for solvent based liquid paints?

Where can i find the price of hydrogen and nitrogen gases. I need large amounts 14000 lbs and 66000 lbs respectively. Any ball park figures you may have will be great. thank you

Would anybody know the going rates on hydrogen and nitrogen or a link to where i can look it up? I would need 14000 lb of hydrogen per year and 66000 pounds of nitrogen.