DD250629A3 - PROCESS FOR CLEANING AND REUSE OF WASTEWATER FROM THE MEAT DISTRIBUTION - Google Patents

Abstract

The invention relates to a process for the purification and reuse of the effluent with effective material recovery and efficient energy use for the slaughtering and processing industry in the meat industry. By means of the invention, hot casserole broth is separated from the cauldron groups by means of a separator in fat and hot caldron water and fed via an intermediate container to a loop. The Kochkesselfett is for further processing in a portable Fettbehaelter, the hot boiler water in a container group for cleaning water passed, stored, a washing machine or to various acceptances for cleaning water zugefuehrt. From the intermediate container, the unseparated cooking broth is optionally conveyed into a container group for feed broth and processed as animal feed. Optionally, also undivided boiling broth is fed to a flotation tank and subjected to a pressure release. The resulting particulate matter as a flotate are transported by Abraeumer in a collecting container and the purified wastewater fed back to the pressure vessel.

Description

Boiler broth unprocessed with the pump in a container group for recycling, consisting of 4 containers, promoted. Furthermore, boiler broth is conveyed from the intermediate container to the separator with the aid of the pump. After separation of the cooking kettle fat and the boiler water through the separator, the cooking kettle fat enters a transportable grease container and can i.a. be incorporated into certain cooked sausage assortments.

The hot boiling water boiler of about 75 ° C to 8O ⁰ C as cleaning water with a purity of 0.02% is stored by means of a pump in a container group for cleaning water, which consists of 4 containers. However, it can also be supplied to a washing machine for cleaning empty containers. At a temperature of 45 ° C to 50 ° C, the cleaning water can be pumped out from the group of cleaning water to various acceptances in the manufacturing department and used to clean the processing machines as needed, using the pump. The tank group for cleaning water is provided with heating registers, which can be switched on when the cleaning temperature falls below!

This makes it possible to recover in a work process previously lost animal raw materials in improved quality from the wastewater and feed it to a further processing. The wastewater is processed into a reusable state of use, especially for cleaning purposes.

Energy is saved and used rationally.

The procedure will be shown below on a process scheme.

process scheme

Boiling broth Z v / i s c henb he holds

fat separator

Kesselelf to the hot water for the cleaning

Recycling of machines and products

extraction spaces

sewage

Pressurized water flotation plant (DF)

/ i

Circulation water Separation of the An for DF partly from the Schweb

content (flotate) of the wastewater

Extraction of the fiatate or extractables by electro-mechanical emptying

Purified extractable wastewater in drains Sewage recovery (grease sludge)

Claims (1)

Process for the purification and reuse of waste water from the meat industry using fat separator, pressurized water flotation and mechanical emptying, in which hot cooking kettle broth is separated from cauldron groups into fat and hot boiler water, characterized in that the cauldron broth is fed via a tundish to a known fat separator which separated Grease fed to a transportable grease container for recycling and the separated water is fed via a loop into a group of containers for cleaning water, the spent cleaning water as waste water subjected to a known Druckwasserentspannungsflotationsanlage and transported the suspended matter as flotate by means of known mechanical emptying in a collection container for recycling and the cleaned wastewater partly fed back to the pressure-release flotation plant and finally the cleaned wastewater is discharged into the sewage system. Field of application of the invention The invention relates to a process for the purification and reuse of waste water from the meat industry with effective recycling and rational Energiea.nwendung for the industry of slaughtering and processing in the meat industry. Characteristic of the known technical solutions For wastewater treatment of the meat industry, various methods are known. Thus, in Mangold / Kaeding - wastewater treatment, VEB German publishing house for basic industry, Leipzig, 1977, p 52, stated that the flotation is suitable for this wastewater. In DD-PS 143761, inter alia, a grease separator is described, in which with several containers, reservoir u. Like. Is worked. According to DD-PS 214 367 a Druckwasserentspannungsflotationsverfahren is described with recycling of the purified waste water in the pressure vessel. _, These mentioned methods have the disadvantage that only one type of treatment of the waste water takes place and it is not ruled out that the remaining wastewater reaches the sewage system partly untreated. Object of the invention The invention aims to reduce the wastewater pollution of extractables and chlorides already at the formation phase, to extract suspended solids in the wastewater, to extract animal fats, to recover animal raw materials, to reuse the energy-containing water required for processing and to optimally reuse the energy used , Explanation of the essence of the invention The invention has for its object to develop a method which continuously directs the resulting in the processing of animal raw water service over certain well-known equipment and feeds a reuse, with a separation with reuse of secondary raw materials from the wastewater. According to the invention the object is achieved in that the cooking broth is fed via an intermediate container a known fat separator. The separated grease is fed to a transportable grease container for recycling and the separated water is fed via a loop to a group of cleaning water tanks. The spent cleaning water is subjected to the wastewater of a known Druckwasserentspannungsflotationsanlage and transported the suspended matter as a flotate by means of known mechanical emptying in a collection container for material recovery. The purified wastewater is in turn partly fed to the pressure-release flotation plant and finally the purified wastewater is discharged into the sewage system. embodiment The invention will be explained below with reference to an exemplary embodiment. The method involves the principle of fat recovery by using a separator, which in principle has the function of a centrifuge, hot cooking broth from the cooking groups with a total of 9 boilers is separated and the fat on the one hand and the hot boiler water on the other. In the cooking kettle groups, the high-fat cooking broth is drained via a funnel-shaped collecting device with coarse set into a V ₂ Α pipe existing ring line. With the help of the pumps, the cooking broth is conveyed into an intermediate container, which is provided with two sieve inserts and temporarily stores the boiler broth. From the intermediate tank can ainmal