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Refuse refers to solid waste materials discarded by households and businesses, including food scraps, packaging, and other non-liquid waste. Sewage, on the other hand, consists of liquid waste, primarily from bathrooms and kitchens, containing water and human or industrial waste. Refuse is typically collected for disposal or recycling, while sewage is treated at wastewater treatment facilities to remove harmful substances before being released into the environment. Additionally, refuse can often be sorted and recycled, whereas sewage requires specific treatment processes to ensure safety and environmental protection.

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What is the difference between sewage and drainage difference?

The main difference between a sewage pump and a drainage pump is the type of liquid and solids they are designed to handle. A drainage pump is generally used to remove clean or slightly contaminated water from places such as construction sites, basements, tunnels, mines and flooded areas. It can handle small amounts of suspended solids, but it is not designed for heavy sewage containing large solids, fibrous materials or organic waste. A sewage pump, on the other hand, is specifically built to transport wastewater containing solids and other debris. Its impeller design and larger solids-passage capability help reduce the risk of clogging when handling raw sewage. Cosmos Pumps offers both drainage and sewage pumping solutions for these different requirements. Its CDW dewatering range is designed for dirty or muddy water with solids of around 4–12 mm, while its CSW sewage range is designed for raw sewage, municipal wastewater and industrial effluent, with solids-handling capacity ranging from 20 mm to 100 mm depending on the model. Briefly put, a drainage pump is more appropriate when the primary requirement is removing accumulated water with limited debris, whereas a sewage pump is designed for wastewater where solids are an inherent part of the fluid. Choosing between them should therefore depend on the liquid being pumped, solids size, required flow, head and operating conditions. Using a drainage pump for heavy sewage can result in clogging, increased wear and pump failure.


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RADITOR * Small generators either air cooled or water cooled 2 stroke. Autos are mainly 4 stroke and the majority watercooled.

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