Is it necessary to install a sump or valves for draining water outward through ditches in the cofferdam surrounding indoor acid and alkali storage tanks?
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Is it necessary to install a sump and valves for draining water outward through drainage ditches around indoor acid and alkali storage tanks?
It is generally not necessary; a recovery pump can be designed for larger cofferdams.
Agree on the sofa. Indoor drainage channels are not good; they cause chaos, are difficult to design and construct, and may not be effective either. If it’s semi-open and the equipment is located nearby, you can consider directing the water directly to a drainage ditch outside the building; otherwise, it’s better to use a sump pit along with a pump.
From an environmental protection perspective, the cofferdam surrounding indoor storage tanks does not have a system for separating rainwater from wastewater; it is used solely for collecting wastewater resulting from tank leaks or tank cleaning. The collected wastewater flows into the accident pool. The cofferdam is designed with a slope of 0.5%, and a sump is provided at one corner of the cofferdam. If this area is above the level of the accident pool, a valve can be installed for draining water; if the area is lower, an submersible pump must be installed in the sump to facilitate drainage.