DE122922C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

It is known that animal waste, waste from slaughterhouses and cover shops to be processed into fertilizer in such a way that, if necessary, using quick lime, the ammonia expelled from these substances and, after its oxidation, to nitric acid again to the residues, as well as to the alkaline bases previously mixed with the latter and phosphates for the purpose of obtaining nitric and phosphoric acid plant nutrient salts is bound. This method has been described in German patent specification 67773.

It has now been found that the rubbish from slaughterhouses and pottery shops can be used can deal with quick lime in a simpler and more successful way if one the lime layered waste under high pressure and preferably in closed Praises rooms. The heating, which is achieved by the connection of the lime with the water of the Waste arises, so increased that it actually destroys all infectious substances become, which is the main purpose here, so that they can be stored for as long as desired, without that they are harmful to health.

In the older method, the main emphasis was placed on one receives the most valuable fertilizer possible, which is why this process is a very special aid needs, which are avoided here and replaced by simpler means.

In the present case it is a matter of a procedure, the slaughterhouse waste, so far they are not already being made sterile elsewhere, especially the livestock and Slaughterhouse manure to be completely disinfected to prevent the spread of epidemics will. Since it is too costly to dry these masses, they should all be destroyed existing germs of infection can be reached by the following procedure.

The waste is chopped up in the fresh state, that is to say the straw-like manure cut to a very short chop, according to its moisture content with 20 up to 25 pCt. ground, freshly burned lime through suitable mixing equipment mixed and then pressed in pits with the exclusion of air.

The mass remains in these pits for a few weeks until the organic matter has become completely brittle due to the action of the caustic lime; she can then easily be dried and ground, or stored for a very long time, without any significant value to lose and without becoming annoying due to decomposition products during long periods of storage.

Now the immediate removal of the manure causes the slaughterhouse administrations great expense and inconvenience during the manure, as it is in prolonged storage suffers great losses, experiences insufficient utilization.

The quick lime is expediently used in this process in such large quantities that to generate the high temperature required to destroy the germs and to decompose the organic substance in this way.

Claims (1)

put that the mass in the ground and priced state is easier to transport and a long time before further decomposition, due to the antiseptic effect of the caustic lime, is protected. Since the fertilizer is in a very fresh state, in which only traces of ammonia are present are, after this experience is treated / comes the ammonia expelling effect of lime (see patent specification 67773) is not considered here. Pa τ ε ν τ - A ν s ρ r υ c η: Process for rendering the waste from slaughterhouses harmless and usable Covering shops using burnt lime in closed rooms, characterized in that that is, the fresh waste mixed with large quantities of quicklime Strongly compressed in closed rooms for a long time until complete decomposition be kept.