Concrete wash water solidification products and methods

Abstract

A method for solidifying cementitious wastewater by combining the wastewater with a super absorbent polymer composition that includes a UV-stabilizer to form a mixture and disposing of the mixture as solid construction waste. The UV-stabilizer may be a stabilizing additive in the super absorbent polymer composition that inhibits the reversion from a solid or semi-solid mixture back to a liquid. In some embodiments, the method includes placing the mixture in UV-light non-transmissive packaging. After placing the mixture in the UV-light non-transmissive packaging, the package is closed and can be permanently sealed. The sealed package with solidified material therein can then be disposed as solid construction waste. The super absorbent polymer composition can include zeolite or other molecular sieves.

What is claimed is: 
     
         1 . A method for solidifying wastewater comprising cementitious residue, the method comprising:
 combining the wastewater with a super absorbent polymer composition to form a gelatinous mixture, the super absorbent polymer composition comprising super absorbent polymer and either zeolite or clinoptilolite.   
     
     
         2 . The method of  claim 1  further comprising shoveling the mixture to discard the mixture. 
     
     
         3 . The method of  claim 1  wherein about 1 to 4 ounces of super absorbent polymer composition is combined with one gallon of wastewater. 
     
     
         4 . The method of  claim 1 , wherein the super absorbent polymer composition comprises at least 1 wt-% zeolite or clinoptilolite. 
     
     
         5 . The method of  claim 1 , wherein the super absorbent polymer composition comprises at least 2 wt-% zeolite or clinoptilolite. 
     
     
         6 . The method of  claim 1 , wherein the super absorbent polymer composition comprises at least 5 wt-% zeolite or clinoptilolite. 
     
     
         7 . The method of  claim 1 , wherein the super absorbent polymer composition comprises at least 10 wt-% zeolite or clinoptilolite. 
     
     
         8 . The method of  claim 1 , wherein the super absorbent polymer composition comprises zeolite. 
     
     
         9 . A composition for solidifying wastewater comprising cementitious residue, the composition comprising super absorbent polymer and zeolite. 
     
     
         10 . The composition of  claim 9  comprising at least two different particle size ranges of super absorbent polymer. 
     
     
         11 . The composition of  claim 9  comprising least 1 wt-% zeolite. 
     
     
         12 . The composition of  claim 9  comprising at least 2 wt-% zeolite. 
     
     
         13 . The composition of  claim 9  comprising at least 5 wt-% zeolite. 
     
     
         14 . A composition for solidifying wastewater comprising cementitious residue, the composition comprising super absorbent polymer and clinoptilolite. 
     
     
         15 . The composition of  claim 14  comprising at least two different particle size ranges of super absorbent polymer. 
     
     
         16 . The composition of  claim 14  comprising least 1 wt-% clinoptilolite. 
     
     
         17 . The composition of  claim 14  comprising at least 2 wt-% clinoptilolite. 
     
     
         18 . The composition of  claim 14  comprising at least 5 wt-% clinoptilolite.