CS261002B1 - A method of treating waste containing humic substances for feeding purposes - Google Patents

Abstract

Humic substances are mainly produced during hydrolysis from food production. The solution concerns the technological process of processing this secondary raw material into feed for livestock. The essence of the processing method is that non-structural waste from the production of soup seasoning containing humic substances with a dry matter of about 40% is mixed with an absorbent material, e.g. bran, forage drying, or other binding traditional and non-traditional raw materials, and these are together mechanically and thermally processed by indirect heating at a temperature of 50 to 140 °C until a homogeneous structural mixture is formed. Higher temperatures during processing should be used in case of contamination of the starting raw material. Lower temperatures during processing preserve the feed value of the protein component of the feed. If necessary, the resulting mixture can be dried and crushed.

Description

BACKGROUND OF THE INVENTION The present invention relates to a process for the treatment of humic substances falling off in food production for feeding purposes.

Until now humic substances are disposed of as difficult waste in landfills, which endangers the environment with odors and pollution of surface and groundwater. nutrients are not utilized at all during this disposal. From this point of view, the use for composting is also not suitable, where the high content of NaCl in the raw material (up to 15% by weight) also has a negative effect. The practical use of humic substances as a non-traditional source in the past has always failed due to their physico-chemical properties. In addition to their high NaCl content, these products are characterized by extremely high viscosity and thixotrophy. Bound water of approx. 40% cannot be separated by conventional drying methods. The solution of this problem is conditioned by the practical use of humic waste in feed practice.

Nutrient content from waste concentrate production containing humic substances in% by weight: dry matter 43.53, NL / N - 6.25 / 15.10, fat 4.03, ash 5.84, fiber 11.47, NaCl 4.21.

These disadvantages are solved by the invention, which allows the use of humic substances as a feed source for livestock, especially monogastric. Especially valuable is the content of nitrogen substances, especially free amino acids, minerals and other specifically active substances, eg against cannibalism of animals.

The essence of the process according to the invention is that humic substances, which are lost during the food production of eg soups having about 40% dry matter, are mixed with suction material eg fodder forage, bran, but also other traditional and untraditional feed and these are mechanically and thermally processed in a duplicator at a temperature of 50 to 140 [deg.] C. until the viscosity and thixotropy of humic substances are attained, optionally until a homogeneous structural bulk mixture is formed.

If desired, the mixture can be dried in belt or drum dryers and scrapped. Higher processing temperatures should be used if desired to achieve complete sterilization of the mixture, especially when the feedstock is contaminated. The use of lower processing temperatures allows the nutritional value of the protein component of the feed to be maintained.

Examples of humic waste processing:

1. Charge a mixture of 2 t humic substances and 2 t wheat bran into a duplicator of a possibly heated mixer. The mixture is mixed under constant indirect heating during the filling, with the filling time being 15 to 40 minutes and the temperature at the end of the filling being about 30 to 60 ° C. After filling and closing the duplicator pressure vessel within 10 to 30 minutes, a temperature of ° C is reached. The mixture is further mixed until the mixture is fully homogeneous, which takes 15 to 40 minutes.

Upon completion of mixing, the contents of the pressure vessel are rolled up and transferred to a dryer (drum or belt drier) where the dry matter is adjusted to 90% in the final product. The resulting product can be scrapped as needed.

2. A charge consisting of 5 wt.% Humic substances and 95 wt. % of traditional feed eg straw, husks, cereal waste, potatoes or other untraditional feed eg poultry excrements, meat and meat waste, kefilate, blood, ruminal contents etc. The representation of individual components is governed by the requirement for achieving a structural mixture in the final product. When filling the pressure vessel, the mixture is mixed under constant indirect heating, with a filling time of 4 to 5 t of the mixture being processed for about 20 to 60 minutes and the temperature at the end of the filling reaching 30 to 60 ° C. After filling and closing the duplicator pressure vessel, a temperature of 100 ° C is reached within 20 to 60 minutes. Heating of the pressure vessel and mixing of the mixture for a period of 20 to 60 minutes is continued to obtain a sanitary feed. After processing, the contents of the pressure vessel are rolled out. The obtained feed can be used as a component of the feed ration, directly or after drying to a higher dry matter, converted into a storable feed.

Example 3

The product produced according to the method of the invention can be reused as a suction material for further saturation with humic substances or other feed materials to increase the proportion of humic substances and the concentration of nutrients in the feed. This application results in savings of other absorbent materials and a reduction in the cost of manufacturing the product. It is mainly the use of the product according to example 1.

The process according to the invention is used primarily for the treatment of waste from the production of dried soups, thereby expanding the feed base and protecting the environment by reducing unsanitary landfills.

Claims (1)

SUBJECT OF THE INVENTION Process for processing waste containing humic substances for feeding purposes, characterized in that the content of humic substances, for example from the production of soup concentrate in an amount of 5 to 95 wt. and a suction feed material such as tows, bran, or other binding traditional and nontraditional feed materials and feed after mixing by heat treatment by indirect heating at a temperature of 50 to 140 ° C to complete homogeneous structure and hygienic safety of the feed, eventually subjecting the final product to drying.