As per the question statement, the answer is YES. All industrial wastewaters from metal processing industries do not contain BOD. I wished that the type of industry has been specified, and more info has been given.

The relationship between COD and BOD just defines the biodegradability of the organics in the wastewater under the test conditions. What could happened in an actual treatment process is subjected to the conditions prevailing in the treatment. Any inhibitor, any deviation from the design conditions, poor inoculum and many other factors could easily be a source of trouble in a treatment process.

Yes. Especially if it contains high concentration of toxic materials. I worked with olive mills waste water of high  phenolic compound. The BOD was zero. 

The types of bacteria needed in an industry usually differ in species from the standard procedures method. The hard to degrade organics found in some of these systems also may take longer than 5 days to break down, so a BOD test will give an inaccurate measurement of the amount of pollution that may be present in a waste stream. 

I would say that it depends on the characteristics of the wastewater. Some of the wastewater from canning or similar industries can still have BOD. But in general the BOD breakdown in industrial wastewater can take longer time. So it is better to estimate COD

Yes but we should understand if you are referring to a wastewater where you do not have biodegradable organic matter or to a wastewater where you cannot measure BOD because of interference of toxic compounds. In the latter case your BOD is just masked by the inhability of bacteria of surviving and reproducing

Thank you all. Nice. But majority of us including  Paolo, Joseph  and  Jeremiah indirectly agree that BOD test may give an inacurrate results may be due to less incubation period or presence of microcidal\microbe inhibitor compounds in wastewater.  

As per the question statement, the answer is YES. All industrial wastewaters from metal processing industries do not contain BOD. I wished that the type of industry has been specified, and more info has been given.

The relationship between COD and BOD just defines the biodegradability of the organics in the wastewater under the test conditions. What could happened in an actual treatment process is subjected to the conditions prevailing in the treatment. Any inhibitor, any deviation from the design conditions, poor inoculum and many other factors could easily be a source of trouble in a treatment process.

The type of industry determines whether or not you have BOD or not. The industries dealing with organic compounds, or those having redox components are mostly prone to BOD impact. good luck