CLEANING AND UTILISATION DEVICE OF LOW-POTENTIAL HEAT OF WASTE WATER Russian patent published in 2011 - IPC F28C3/00 

FIELD: power industry.

SUBSTANCE: cleaning and utilisation device of low-potential heat of waste water includes heat accumulator and waste heat exchanger. Heat accumulator is made in the form of percolation bank containing on the surface of the latter the horizontally located distribution system of waste water, which is made of drain pipes perforated from above. Percolation bank is formed of one or several layers of filtering material, which are located downwards in decreasing order of filtration coefficient of material and separated from each other with film from waterproof material, which prevents mutual penetration of layers of filtering material; in filtering materials there installed is one or several waste heat exchangers of low-potential heat of cleaned waste water; at that, waste heat exchangers are located on boundaries of layers of filtering materials. At the bottom of percolation bank it is possible to make bore pits filled with filtering material.

EFFECT: it is possible to utilise earlier stored heat at absence of flow of waste water and maintain the stored heat.

1 dwg