Experimental Study On The Application Of The Medium Formed By Fly Ash And Furfural Residue For Plant Cultivation

Our country is one of a few countries taking coal as the main energy inthe world. The fly ash is very large in output. At present, the treatment to flyash of our country is mainly by means of storing, which not only takes up alarge amount of land, but also probably causes the environmental pollution.Meanwhile, the output of another kind of industry offal furfural residueincreases gradually with the industrialized development too, dealing with bypiling up or burying, this not merely cause energy to waste but also will takeup the place , pollute the water and soil. So, the comprehensive utilization ofthe two kinds of offals has stared us in the face.The acid residue of furfural can reduce the pH value of fly ash and offerlots of organic matter. At the same time, it can improve the physics andchemistry properties of fly ash, reduce the effect of toxicity element, whichmakes it a feasible modifying material for fly ash. Some related studies haveworked out appropriate proportion and the pioneer plants, but these studieswere limited in the initial stage. In order to put this kind of medium intopractice, the properties change and the variety of plants need a long-termfurther research.This study selected the plants as many as possible to take experiment.Through a lot of observation for three years, we compared the yield, quality ofthe plants, analysed the change of the medium's physics and chemistryproperties, explored the effect on plant body and environment of the harmfulheavy metal element in the medium and carried on the quality assesment toanalyse the quality difference of the medium to general farmland, whichprovided the direction for practice.The results indicated: (1)the mediun formed by fly ash and furfural...