Using Oxygen to Solve Waste Water Problems
Lack of oxygen can cause inadequate purification or even anaerobic decomposition, as well as offensive odors. Injecting oxygen into sludge beds &/or piping allows you to:
* Reduce nitrogen levels
* Meet peak O2 demands
* Have a back up to your aeration system
* Pre-purify waste water
* Control odors
* Deter corrosion damage
* Meet increased requirements regarding waste water purification
Waste gas treatment is an often overlooked but important function of Semiconductor, PV and LED fabrication. Several serious accidents have taken place in factories where no abatement was installed. Even today waste treatment is often seen as a cost rather than a safety issue.
There are three main reasons why waste gas treatment is installed in factories: health and safety, environmental factors, and quality control.
Ozone is a highly effective method for bacteriological treatment and useful in a variety of everyday situations from removing odor to ensuring clean, high quality drinking water from the tap. But O3 is more than just effective. It is also environmentally safe, which makes it highly suitable for treating water in enormous quantities; both drinking water and industrial waste water, i.e. in industrial slaughterhouses.
Sludge by-products from the metalworking industry have a high potential for recycling. Prolonged grinding processes can generate large amounts of highly valuable, alloy-rich sludge; consisting of metal powder and cooling lubricants. Inside our VacuDry system, the thermal separation of the liquids (hydrocarbons, eventually water) and solids (metal powder) takes place in an oxygen free atmosphere. This absence of oxygen ultimately eliminates material degradation by oxidation, and self-ignition or explosion risks....
The brewing process generally generates unique, high-strength waste water as a by-product. The waste water typically has a high concentration of Biological Oxygen Demand (BOD) form the carbohydrates and protein used in brewing beer. Brewery waste water usually has a temperature of > 25 °C.
Hydrogen Peroxide typically controls odors and corrosion at treatment plant headworks by direct oxidation of hydrogen sulfide (H2S) within the wastewater. In the direct oxidation mode, H2O2 is applied to the wastewater 5-30 minutes prior to the point where the odors are being released, generally as the wastewater line enters the plant boundary.
The efficiency of hydrogen peroxide treatment depends upon the available reaction time, the level of iron in the wastewater (reaction catalyst), wastewater pH and...