Wastewater collection

Usually, wastewater collection takes place by means of gravity from domestic households and the industry, then led to wastewater treatment plants through pumping stations.

The two main ways of collecting wastewater are through collection systems with either combined or separated sewers for rainwater and wastewater. In a system with combined sewers, wastewater from private households and companies is collected through the same pipe as rainwater. Many new collection systems provide the option of separate sewers for rainwater and wastewater.

Rainwater is collected in sewers and is either led directly to pumping stations or to storage tanks where it, at a later stage, is mixed with the wastewater. As the amount of rainwater is unpredictable, it may be necessary to store rainwater either in basins or in stormwater tanks inside the treatment plant. This makes it easier to control the flow of rainwater as it is mixed with the wastewater.

For wastewater collection, AVK offers a wide selection of gate valves, check valves, slide- and knife gate valves, air valves, couplings, adaptors, repair clamps, tapping saddles, fittings, and valve accessories.

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