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Treatment method of rice milk for yellow rice wine brewing

A technology for the brewing and processing method of yellow rice wine, which is applied in the field of rice water treatment for rice wine brewing, can solve the problems of poor shock load resistance, large one-time investment and high operating costs, achieve stable operation, reduce investment and reduce floor space Effect

Active Publication Date: 2021-02-02
杭州兴态环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biochemical method mainly has the problems of large land occupation, large mud production, poor impact load resistance, high operating costs, and large one-time investment.

Method used

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  • Treatment method of rice milk for yellow rice wine brewing

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] In the method for treating rice milk water from rice wine brewing in this embodiment, the treated wastewater is rice milk wastewater from a certain company, and COD=13300mg / L was determined.

[0033] Such as figure 1 Shown, the processing method of the processing method of the yellow rice wine brewing rice milk water of the present embodiment comprises the following steps:

[0034] Step 1: Add 0.5% Ni-Ce / Al to the wastewater 2 o 3 (The molar ratio of Ni to Ce is 1:0.02) Catalyst (dosing ratio is based on the quality of wastewater), hydrogen peroxide and oxygen combined oxidant, temperature 150 ° C, pressure 1 MPa, reaction for 3 hours, filtration and separation, to obtain filtrate I and filter residue Ⅰ, the COD of the filtrate Ⅰ is 2740mg / L; the filter residue Ⅰ is used as a catalyst and can be reused.

[0035] Step 2: The COD of the filtrate I obtained in step 1 is 235 mg / L after the activated sludge aeration treatment.

Embodiment 2

[0043] The treated wastewater was rice milk wastewater from a certain company, and it was determined that COD=30000mg / L.

[0044] The processing method of the processing method of rice wine brewing rice milk water of the present embodiment comprises the following steps:

[0045] Step 1: Add 0.5% Ni-Mg / Al to the wastewater 2 o 3 (The molar ratio of Ni to Mg is 1:0.02) catalyst (based on the quality of wastewater), hypochlorous acid and ozone combined oxidant, temperature 100°C, pressure 1MPa, reaction for 2h, filtration and separation to obtain filtrate I and filter residue I, filtrate ⅠCOD is 1896mg / L; filter residue Ⅰ is a catalyst and can be reused.

[0046]Step 2: The COD of the filtrate I obtained in step 1 is 234 mg / L after the activated sludge aeration treatment.

Embodiment 3

[0058] The treated wastewater is rice milk wastewater from a certain company, and the COD=18500mg / L was determined.

[0059] The processing method of the processing method of rice wine brewing rice milk water of the present embodiment comprises the following steps:

[0060] Step 1: Add 5% Ni-Ce / Al to the wastewater 2 o 3 (The molar ratio of Ni to Ce is 1:0.01) catalyst (based on the quality of wastewater), hypochlorous acid and air combined oxidant, temperature 200°C, pressure 2MPa, reaction for 3h, filtration and separation to obtain filtrate I and filter residue I, filtrate ⅠCOD is 6510mg / L; filter residue Ⅰ is a catalyst and can be reused.

[0061] Step 2: The COD of the filtrate I obtained in step 1 is 2615 mg / L after the activated sludge aeration treatment.

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Abstract

The invention relates to a treatment method of rice milk for yellow wine brewing, which comprises the following steps: (1) firstly adding a combined oxidant into the yellow wine brewing rice milk, andthen adding a modified nickel-based supported catalyst, wherein the combined oxidizing agent comprises a liquid oxidizing agent and a gas oxidizing agent; (2) carrying out wet low-temperature catalytic oxidation reaction on the mixture obtained in the step (1), wherein the reaction temperature ranges from 100 DEG C to 200 DEG C, the reaction pressure ranges from 0.1 MPa to 2 MPa, and the reactiontime ranges from 1 h to 5 h; and (3) filtering the reaction product obtained in the step (2) to obtain filtrate and filter residues, performing biochemical treatment on the filtrate, and conducting discharging after reaching the standard. According to the method, a catalytic oxidation system is constructed by combining a liquid oxidant and a gas oxidant and cooperating with a modified nickel-based supported catalyst, and the temperature of a catalytic oxidation reaction is reduced to 100-200 DEG C. The water quality of the yellow rice wine brewing rice milk is more stable after wet low-temperature catalytic oxidation treatment.

Description

technical field [0001] The invention belongs to the technical field of rice wine brewing wastewater treatment, and in particular relates to a method for treating rice milk water from rice wine brewing. Background technique [0002] Rice wine is a national specialty and traditional food of my country, and it is also one of the oldest drinking wines in the world. In the traditional rice wine brewing process, the glutinous rice needs to be soaked for a period of time. In the rice-sharing method, the rice soaking time is as long as 16-20 days; The rice time is relatively short, generally 18 to 24 hours. Rice milk water is a by-product of rice wine soaking process. According to statistics, producing 1 ton of rice wine will produce 0.5 ton of waste water. Rice milk wastewater has the characteristics of high organic matter content (COD value of 10,000-30,000 mg / L) and high total acid content. If it is discharged into rivers without treatment, it will seriously pollute the water b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/72C02F101/30C02F103/32
CPCC02F9/00C02F1/725C02F1/001C02F3/1236C02F2103/325C02F2101/30
Inventor 孔令鸟
Owner 杭州兴态环保科技有限公司