System and method for producing an injection silicate gel solution for injection into a soil

A system for producing an injection silicate gel solution for injection into a soil with

• a filtering device through which a mixing water can flow for pretreatment, wherein the filtering device has at least one filter element for ion exchange,
• an admixing device for metered admixing of a curing agent,
• a feeding device for feeding liquid silica sol into the pretreated mixing water,
• a feeding device for feeding liquid sodium silicate into the pretreated mixing water, and
• a mixing device for mixing and homogenizing the fed components with the pretreated mixing water for forming a silicate gel solution
• wherein
• the filter element comprises an ion exchange resin, and
• the filtering device comprises at least one first filter element with a cation exchange resin and at least one second filter element with an anion exchange resin.