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A kind of processing method of kimchi wastewater

A treatment method and wastewater technology, applied in the food industry wastewater treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of reducing the transparency of water body, reducing the self-purification ability of water body, and unreasonable design, etc. Achieve the effect of strong resistance to uneven settlement, broad market application prospects, and outstanding substantive characteristics

Active Publication Date: 2015-09-09
CHENGDU SHUANGDI ENVIRONMENT ENG
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In large-scale agricultural and sideline product processing enterprises that mainly produce pickled vegetables, condiments, and red oil series side dishes, industrial wastewater with high salt concentration is produced during the production process, commonly known as pickle wastewater, and its maximum concentration of chloride ions can reach 30,000mg / l; If the waste water is directly discharged into the natural water body, the dissolved oxygen in the water will be consumed rapidly, the water quality will become black and smelly, the transparency of the water body will be reduced, the water body ecosystem will be destroyed, the self-purification ability of the water body will be reduced, the water quality will deteriorate, and the environment will be seriously affected. Pollution
[0003] Kimchi wastewater contains a large amount of macromolecular organic matter such as cellulose and lignin, and has the characteristics of high salinity, large fluctuations in water quality, strong inhibitory effect on the growth of common microorganisms, and even kills common microorganisms. The design of the process is not reasonable enough, resulting in the final wastewater treatment results not meeting the national "Comprehensive Wastewater Discharge Standard" (GB8978-1996) first-level discharge standard, so that further treatment is required in the follow-up, which increases the production cost of the enterprise and does not meet the current requirements. The strategic goal of energy conservation and emission reduction advocated by the state

Method used

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  • A kind of processing method of kimchi wastewater
  • A kind of processing method of kimchi wastewater

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Experimental program
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Embodiment

[0033] Such as figure 1 Shown, the processing method of this pickle waste water, comprises the steps:

[0034] (1) In the preparation stage, according to the characteristics of the discharged pickle wastewater, select, cultivate and domesticate the exclusive anaerobic, facultative and aerobic salt-tolerant bacteria that can adapt to the pickle wastewater, and use them in the corresponding treatment stage; specifically In other words, the steps of screening, cultivating and domesticating exclusive anaerobic, facultative and aerobic salt-tolerant bacteria are as follows:

[0035] (1a) Take kimchi wastewater and activated sludge from the original discharge site and add them to the bacterial culture tank to simulate actual living conditions for bacterial culture;

[0036] (1b) Screen surviving bacteria for cultivation and domestication, and irregularly add nutrients containing the three basic elements of carbon, nitrogen and phosphorus required for bacterial growth, such as flour...

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Abstract

The invention discloses a method for treating pickle wastewater. The method comprises the following steps: (1) cultivating and domesticating special halotolerant bacteria; (2) feeding the pickle wastewater into a grid well to primarily eliminate suspended solids; (3) conveying the wastewater inside the grid well into a conditioning pond for physical sedimentation, and stirring so as to ensure that the water quality is balanced; (4) feeding the wastewater into an anaerobic system to be treated so as to degrade and decompose organisms; (5) feeding the wastewater into an aerobiotic biochemical system for secondary aerobic anoxic treatment, further decomposing the residual organisms by using aerobic halotolerant bacteria and anoxic halotolerant bacteria respectively, and balancing the water quality; (6) performing solid-liquid separation in a secondary sedimentation tank to settle down sludge, and performing filtering treatment in a carbon filtering tank so as to ensure that the effluent is clear in quality. The method is compact in arrangement, the land is saved, impurities such as suspended solids and organisms in the pickle wastewater are sequentially eliminated, the effect of final sewage treatment is greatly improved, and a great deal of expense for extra treatment is saved for companies.

Description

technical field [0001] The invention relates to a wastewater treatment method, in particular to a treatment method for high-salt-concentration wastewater generated in a kimchi production process. Background technique [0002] In large-scale agricultural and sideline product processing enterprises that mainly produce pickled vegetables, condiments, and red oil series side dishes, industrial wastewater with high salt concentration is produced during the production process, commonly known as pickle wastewater, and its maximum concentration of chloride ions can reach 30,000mg / l; If the waste water is directly discharged into the natural water body, the dissolved oxygen in the water will be consumed rapidly, the water quality will become black and smelly, the transparency of the water body will be reduced, the water body ecosystem will be destroyed, the self-purification ability of the water body will be reduced, the water quality will deteriorate, and the environment will be seri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/32
Inventor 唐义琰钟伟
Owner CHENGDU SHUANGDI ENVIRONMENT ENG
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