Sprinkler irrigation stripping module for removing volatile solute substance from groundwater stream, comprises two vacuum-pressure-resistant sprinkler irrigation columns in water through flow direction connected in series

摘要

The sprinkler irrigation stripping module for removing volatile solute substance from groundwater stream, comprises two vacuum-pressure-resistant sprinkler irrigation columns in water flow direction connected in series, where each sprinkler irrigation column comprises a water distributor- and gas collection unit in a head part and a gas distributor and water collection unit in the bottom part. Packing body (2) is arranged between the head part and the bottom part into the sprinkler irrigation column. A carrier gas system is provided with a vacuum pump system. The sprinkler irrigation stripping module for removing volatile solute substance from groundwater stream, comprises two vacuum-pressure-resistant sprinkler irrigation columns in water flow direction connected in series, where each sprinkler irrigation column comprises a water distributor- and gas collection unit in a head part and a gas distributor and water collection unit in the bottom part. Packing body (2) is arranged between the head part and the bottom part into the sprinkler irrigation column. A carrier gas system is provided with a vacuum pump system, a carrier gas purification module (8) and a carrier gas dosing system in such a way that the cleaned carrier gas is fed parallel into the sprinkler irrigation column. The carrier gas escaping from the sprinkler irrigation column is fed into an upstream sprinkler irrigation column, where the carrier gas is guided in a countercurrent to the groundwater and the groundwater is trickled into the sprinkler irrigation column, which is vertically arranged above one another. The packing body of the sprinkler irrigation column is formed as quartz gravel. The gas distributor and water collection unit are formed as a sieve bottom for distributing the discrete-quasi-surface of the gas and water flows in part currents with gas inlet pipes and gas inlet line for low pressure drop into the packed bed. Multistage carrier gas purification module and a carrier gas quantitative limitation unit are provided into a carrier gas circulation. A heat exchanger (11) of an operating water circulation of a vacuum pump (7) is attached into a water supply line of the sprinkler irrigation column. A dosing device is provided for reactive liquids with static mixer module to a water outlet for the effluent water stream. A closed vacuum carrier gas pipeline system is provided with the vacuum pump. A fresh carrier gas dosing device is provided with a gas supply unit (10) and/or a carrier gas outlet after the gas purification system. An independent claim is included for a method for removing volatile solute substance from groundwater stream.