Salt in the pipeline has blocked it
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The waste water delivery pipes in our factory keep getting clogged. Since the waste water contains salts, the pipes become severely blocked after some time, and they also become narrower over time. Does anyone have any good solutions for this problem? Currently, our method of treatment is to use steam flushing, but it isn’t very effective! Thank you so much!
The chemical cleaning method involves creating a simple circulation system for the pipes and carrying out chemical cleaning on a regular basis.
Reply to 1# formosapta: If the pH value is >3, it will have a significant impact on production. It is recommended to learn about the “wax prevention, scale prevention, and corrosion prevention GPRS system” (it’s a bit expensive).
Reply to 3# pzhmotor: The pH of the wastewater is around 13; in fact, it contains the absorption tanks for all the factory’s waste gases and wastewater. The waste liquid contains NA ions and Mg ions, with these two ions being the main ones. The piping is made of carbon steel; if the cost is high, it’s likely not economical or practical! Personally, I think it’s better to find a way to dissolve these substances or form precipitates to remove them!
Inorganic salts should be washed away with high-pressure water, right?
The pipeline should have a certain slope, and a drain outlet should also be installed. What type of wastewater is it?
High PH, contains phosphorus and alkali, H3PO4, HCL, organic substances!
After each transfer of wastewater, it is necessary to perform a purge to ensure that the pipes are empty; alternatively, the wastewater can be allowed to settle or crystallize first before being transferred.
Reply to 1# formosapta: What are the temperature and pressure?
The temperature is in the high 20s, and the pressure is at normal levels!
Try using hot water or steam for tracing, as well as raising the temperature of the medium. Purging cannot solve the problem; the formation of salt is the main cause of pipeline corrosion. As suggested by the original poster, it is also a good method to first collect the salt crystals from the wastewater before transporting it.