Solutions for clogged reclaimed water pipes
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The filtrate resulting from the pressure filtration of materials in the workshop is sent to the recycled water tank; the path taken is long and there are many bends, and currently DN50 PPR pipes are being used for this purpose. Due to the long distance of the path, complete backflow is not possible; moreover, the material tends to precipitate easily due to temperature effects, which often leads to blockages. The areas most prone to blockage are the elbows and flange connections. Washing them with an air compressor producing about 7 kilograms of pressure along with hot water does not yield very noticeable results. All the pipes were removed for cleaning, and after using them a few times, the flow rate dropped back to 3-4 M3/H. If the piping needs to be redesigned, I hope experts can offer some suggestions. The pipeline is long; the straight-line distance is estimated to be 300–400 meters. However, due to constraints in the workshop, it’s not possible to maintain a straight path. The material tends to precipitate as a result of temperature effects, and the timing of material discharge is uncertain – usually around ten times a day. Has anyone encountered a similar tricky problem? Are there any good solutions? I would appreciate some advice from everyone regarding the selection of pipe material, the determination of pipe diameter, the choice of pump, and the impact of head pressure.
Try pipe insulation, or consider using an electric heating wire as part of the insulating layer. The key to crystallization lies in the temperature drop that occurs during fluid transport. (Guessed, for reference only)
If the material tends to precipitate, should a buffer tank be added before it enters the pressure filter, so that the substance can precipitate completely at low temperature before going into the pressure filter? Otherwise, the pipeline is too long, and insulation or electric heating protection would be needed... It doesn’t seem to be very cost-effective.