Process for recycling rice soaking water

Abstract

The invention discloses a process for recycling rice soaking water. The process is used for solving the problem that wasting is caused to some extent due to the fact that the rice soaking water generated from rice soaking is fully recovered for rice soaking, the rice soaking water can only be discharged after being treated after off odors are generated, and the off odor generating rice soaking water is inconvenient to recycle. The process comprises the following steps: (1) soaking rice with clean water, wherein the soaked rice absorbs part of the clean water, and soaked superfluous water serves as the rice soaking water; (2) conveying rice-soaked rice soaking water into an intermediate tank for collection; (3) directly recycling part of the rice soaking water in the intermediate tank to rice soaking; (4) subjecting the remaining rice soaking water in the intermediate tank to heated sterilization by steam of 95 DEG C to 100 DEG C, naturally cooling the sterilized water, and then, adopting the water as feed water in a yellow wine brewing process. The rice soaking water is recovered to rice soaking and wine brewing, so that the cyclic utilization of the rice soaking water is achieved,the recycling rate of the rice soaking water is increased, and the aim of reducing the rice soaking water, which is required to be treated and discharged due to off odors, is achieved.

Description

technical field [0001] The invention relates to the field of recycling waste water in brewing process, in particular to a rice milk water recycling process. Background technique [0002] Soaking rice is an operation step in the traditional process of rice wine brewing. By soaking rice, the rice absorbs water and expands to facilitate cooking. During the process of soaking rice, a large amount of water is required. After rice soaking, a large amount of rice milk water is produced. Rice milk water is The main pollutants in rice wine production, rice milk water has high BOD and COD, and direct discharge will cause greater pollution. The traditional rice milk water treatment method is through acidification, UASB anaerobic, SBR aerobic and other combined treatment processes. Discharge. Although this treatment method can ensure the discharge of wastewater up to the standard, it often requires a large investment and takes up space. At the same time, it will produce odor and other p...

AI Technical Summary

Problems solved by technology

[0004] Rice milk water is very rich in nutrients, including a large amount of organic acids, amino acids, proteins, starches, sugars, fats, etc. When soaking rice, bacteria in the environment can easily enter the rice milk water, especially when the temperature is high in summer , Rice milk water is easy to deteriorate and produce peculiar smell. Using this method to recycle rice milk water, rice milk water needs to be replaced after it produces peculiar smell, and the rice milk water that produces peculiar smell needs to be treated before it can be discharged, and it is inconvenient to Continuing to recycle, creating waste to some extent