We are constructing a chemical processing facility which produces soapy water as one of its waste streams. It is primarily soapy water, sodium or potassium based. Typically this stream is diverted to city water treatment with no issues. however, our proposed plant location is in a rural area, and uses a septic. Local authorities are not keen on greywater in this area (though it would be great for that use). We apparently cannot use the septic, as the effluent stream has a fairly high BOD and would sffect septic operation.
We are exploring ways to reduce the water stream, initially RO filtering to recirculate some water back, and then evaporate the RO brine discharge to a solid waste. However, evaporators in the size we need tend to have a rather high capital cost. I was wondering if there exists any simple technology for evaporation. Evaporation is a rather simple concept, (and we are in the desert!), it seems that it would be a fairly trivial design to atomize air into a column of heated air at the correct rate.
so the questions I have are:
1. are there any simple economical technologies for treating this greywater to make it acceptable for septic discharge?
2. Should I expect to run through a lot of RO membranes, making RO an expensive technology for this application?
2. has anyone ever designed a crude evaporator like the one I speak of? It is a quick calculation to determine the energy input required for evaporation, but some of the technical aspects of solids removal would need to be addressed.
We are exploring ways to reduce the water stream, initially RO filtering to recirculate some water back, and then evaporate the RO brine discharge to a solid waste. However, evaporators in the size we need tend to have a rather high capital cost. I was wondering if there exists any simple technology for evaporation. Evaporation is a rather simple concept, (and we are in the desert!), it seems that it would be a fairly trivial design to atomize air into a column of heated air at the correct rate.
so the questions I have are:
1. are there any simple economical technologies for treating this greywater to make it acceptable for septic discharge?
2. Should I expect to run through a lot of RO membranes, making RO an expensive technology for this application?
2. has anyone ever designed a crude evaporator like the one I speak of? It is a quick calculation to determine the energy input required for evaporation, but some of the technical aspects of solids removal would need to be addressed.
