The traditional below-grade concrete sump with a mounted Plastic Pump(KEXON) of some style is no longer the best way to contain and deal with hazardous liquid wastes. Regulations now require these to be lined with corrosion-resistant coatings to prevent chemicals, oils and other materials from leaching into adjacent groundwater. But concrete sumps are difficult to seal completely, and keep sealed. Coatings are typically 125 mils thick since sump service is considered immersion service, and anything less might not last long and also be inadequate. Regular inspections are necessary to ensure continued integrity of the coating. When chemicals penetrate it through constant immersion, patching is possible but difficult, and seldom acceptable. In many cases the coating must be completely stripped off and the concrete surfaces recoated.
Packaged non-metallic pump-tank units now available often can provide economical solutions to some of the problems described above. These are standard or customer-engineered self-contained tanks containing not only pumps, but level controls, control panels and related piping as well. Wetted parts machined or fabricated from a number of thermoplastic or thermosetting materials, for instance the five families of plastic compounds discussed earlier, make the systems suitable for handling a broad range of corrosive or otherwise hazardous materials up to temperatures of 275 F. Installation usually involves only electrical and influent/effluent connections. In most cases they are free-standing and require only a concrete pad, but some have been installed in existing concrete basins.
To sum up, plastic pumps and plastic sump systems have established a dependable service record over the last few decades that points to their suitability for many fluid handling duties. They are particularly capable where corrosive and hazardous liquid wastes or chemicals have to be contained and pumped. As a result they are being applied increasingly for such tasks in the water/wastewater field. Their development continues.
Click Foam Bottle to learn about more information
