The anaerobic treatment of wastewater (IC, UASB, etc.) produces a very strong ammonia odor
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Our company is engaged in the production of soy products, and the wastewater treatment process involves anaerobic processes (including UASB and IC). These processes generate a very strong odor of ammonia nitrogen, which has led to complaints from residents living in the vicinity. What measures can be taken to reduce the ammonia nitrogen odor produced during the anaerobic treatment process? Note: The wastewater belongs to the category of soybean milk wastewater; it contains a lot of residue (tofu pudding), and its COD is approximately 12,000
Excess ammonia nitrogen: Add calcium oxide directly, dissolve it in water and spread it throughout the entire pond. The principle is that ammonia nitrogen is converted into nitrous acid in an aerobic environment, and nitrous acid is then converted into nitrates under aerobic conditions； Calcium peroxide can release oxygen slowly and continuously – what a great thing! This is a temporary, emergency solution!
It’s somewhat effective, but it seems to require a relatively long response time.
Confirm whether it is an ammonia smell or hydrogen sulfide; hydrogen sulfide is the more likely possibility.
Hydrogen sulfide shouldn’t cause deaths; it’s probably ammonia nitrogen. Install an exhaust gas treatment system – photocatalytic oxidation of the exhaust gases can effectively remove unpleasant odors, right? and so on
The anaerobic tank is sealed; odor collection and spray washing are in place
If it is indeed ammonia, it indicates a high concentration of ammonia nitrogen and a high pH in the anaerobic tank.