In this method a chemical adjusting the pH value of waste water is added. This chemical then decreases the amount of odor to the desired level in the sewer pipe. With the right dosage corrosion can also be diminished.
Liquid oxidation and coagulation substances are suitable for the removal of odor, hydrogen sulfide and BOD (Biochemical oxygen demand), and for sludge processing. This method requires a chemical feeder, electricity and adding the needed chemicals on a regular basis. The chemicals are provided in 45 kg dishes or 1200 kg containers.
In addition to odor removal, this method is ideal for the prevention of corrosion and erosion of the metal and concrete surfaces in the sewer pipe. The method decreases odor in the target from a distance of 5-10 km.