Economical treatment system for typical salty process solutions (approximate 15 t/h)
A complete thermal treatment with evaporator and crystallizer would be too expensive and from the energetic view not economic, the benefits of the single steps are used in line to guarantee a safe and economically process.
Our focus is concentrated on the reduction of thermal separation technology taking into account the pre concentration to reduce the costs and lower the amortization time. Only an integrated approach guides into an combined and economically solution.
Hereby about 30 % of the invest can be saved and about 40 % of the energy costs compare to common systems.
In this example the sediments and the insoluble parts will be removed first. The solution is filtrated by a membrane technology.
By using a pressure up to 160 bar in the modules of the combination of the different membrane technologies (UF, NF or RO) it is possible to concentrate close to crystallization. The permeate (pure water) in process water quality can be reused in the plant.
In the following step the high concentrated brine is to be dewatered further by a thermal step or a thermal centrifuge up to almost solid. This is done under reuse of all containing heat of the concentrates of about 65 °C. The containing materials can be taken out at this steps for reuse in the production.