Process of sedimentation of hard particles of hydrophobized petropolluted earth in the water dispersive environment is connected to various forms of coagulation structurization of sedimentation deposit. The work present results of strained sedimentation of particles in the hard phase under the influence of gravity during setting of water suspension of petropolluted ground. Coagulation of the petropolluted particles of earth during setting of concentrated water suspensions results in the formation of coagulation structure with friable spatial grid covering all volume of the dispersive environment and sedimentation self-packing with formation of friable deposit from petropolluted particles and upper layer of transparent dispersive environment. The least sedimentation volume of deposit from the petropolluted particles is approximately in 2 times more than sedimentation deposit from particles of pure earth. The practical opportunity of application of a method thermograph for estimation of the degree of destruction of the structure arising from redistribution of forms adsorption of water with the surface of mineral particles of hard phase has been confirmed: adsorption and immobilized in the structural grid of a liquid phase of suspension.