A kind of processing method of sorbic acid waste water

A technology of sorbic acid wastewater and treatment method, applied in anaerobic digestion treatment, water/sewage treatment, aerobic process treatment and other directions, can solve the problems of high operating cost, high cost, low biochemical treatment efficiency, etc., and reduce the difficulty of treatment. , The effect of improving the removal capacity and saving labor costs

Active Publication Date: 2020-06-16
NANTONG ACETIC ACID CHEM
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AI Technical Summary

Problems solved by technology

[0002] The concentration of organic pollutants, heavy pollution, and refractory degradation of sorbic acid wastewater make it difficult for general chemical wastewater treatment methods to achieve good treatment results
[0003] With the continuous improvement of environmental protection requirements, especially the increasing requirements of ammonia nitrogen discharge, it brings certain challenges to the treatment of wastewater containing organic matter. The traditional process treatment includes A / 0, SBR, oxidation ditch, IC, UASB, CASS, A2 / 0 and other processes are difficult to efficiently remove sorbic acid wastewater, especially the treatment of industrial sewage to meet ammonia nitrogen standards is even more difficult, so some of its bio-enhancement technologies and even online bio-enhancement technologies were born. This technology is mainly for its wastewater Dosing a certain amount of dominant bacteria agent in the treatment process, so as to increase the concentration of effective bacteria in its wastewater
[0004] The biochemical treatment efficiency of these technologies is low, the cost is high, the investment is high, the operating cost is more than 10 yuan / ton of water, a large amount of physical and chemical waste or sludge is generated, and it is necessary to comprehensively adopt the means of physical and chemical + biochemical + physical and chemical, and it is necessary to add a large amount of water Chemicals
[0005] Due to the adaptability of the strains and the water quality relationship, it is difficult for biosynergies to play a stable role in industrial sewage treatment, especially the limitations of conventional biosynergies technology, which makes it difficult to solve the problem of excessive ammonia nitrogen in industrial sewage. The cost is too high, and it is difficult for enterprises to bear

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  • A kind of processing method of sorbic acid waste water

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A treatment method for sorbic acid wastewater, comprising a biochemical system for wastewater treatment, an anaerobic process and an aerobic process, the treatment method comprising:

[0036] The sorbic acid raw water is mixed with the effluent of the secondary sedimentation tank of the biochemical system as the wastewater for activating the bacterial agent: the specially selected strains for domestication are as follows:

[0037] 1. The proportion and cultivation method of the bacteria added in the anaerobic process:

[0038] The proportion of strains added in the anaerobic process is: 15% of Clostridium, 20% of Bacteriodes, 20% of Butyrivibrio, 10% of Methanobacter brucei, 10% of thermophilic Methanobacterium 20%, Methanospirillum henzii 5%, Methanococcus 10%

[0039]According to the above ratio, the ratio of sorbic acid raw water: system secondary sedimentation tank effluent: composite bacteria is 5:100:1, and the temperature is controlled at 38 degrees in a stirrin...

Embodiment 2

[0055] 1. The proportion and cultivation method of the bacteria added in the anaerobic process:

[0056] The proportion of strains added in the anaerobic process is: Acetobutylicum 18%, Bacteroides aceticum 22%, Butyrivibrio 25%, Methanobacter brucei 8%, Methanobacterium thermoautotrophicum 15% , Methanospirillum henzii 5%, Methanococcus 7%.

[0057] According to the above ratio, the ratio of sorbic acid raw water: system secondary sedimentation tank effluent: composite bacteria is 5:100:1.5, and the temperature is controlled at 39 degrees in a stirring environment, and the activation is completed by continuous stirring for 24 hours.

[0058] 2. Proportion and activation of bacteria in aerobic process

[0059] The proportion of strains added to the aerobic process is:

[0060] Pseudomonas 15%, Rhodospirillum 12%, Pseudomonas (pro-teus vulgaris) 18%, Clostridium putrificum 13%, nitrate bacteria 2% and nitrate bacteria 13%, Bacillus subtilis 15% and Corynebacterium 12%.

[0...

Embodiment 3

[0065] 1. The proportion and cultivation method of the bacteria added in the anaerobic process:

[0066] The proportion of strains added in the anaerobic process is: Clostridium perfringens 16%, Bacteroides ovale 21%, Butyrivibrio 23%, Methanobacter brucei 12%, thermoautotrophic methane Bacillus 16%, Methanospirillum henzii 5%, Methanococcus 7%.

[0067] According to the above ratio, the ratio of sorbic acid raw water: system secondary sedimentation tank effluent: composite bacteria is 5:100:1.3, and the temperature is controlled at 40 degrees in a stirring environment, and the activation is completed by continuous stirring for 24 hours.

[0068] 2. Proportion and activation of bacteria in aerobic process

[0069] The proportion of strains added to the aerobic process is:

[0070] Pseudomonas 12%, Rhodospirillum 15%, Pseudomonas (pro-teus vulgaris) 18%, Clostridium putrificum 16%, nitrate bacteria 2% and nitrate bacteria 10%, Bacillus subtilis 15% and Corynebacterium 12%. ...

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Abstract

The invention discloses a technique for treating sorbic acid wastewater. A biochemical system for wastewater treatment, an anaerobic process and an aerobic process are included; the treatment technique comprises steps as follows: in the anaerobic process, mixed water is formed by raw sorbic acid wastewater and effluent from a secondary sedimentation tank of the biochemical system, an anaerobic composite strain is added to the mixed water to be stirred, and the strain is activated; the pH of the anaerobic inflow water is controlled in the range of 6-9, the water temperature is at 35-43 DEG C, and the COD of the anaerobic inflow water is controlled in the range of 3,500-4,000 mg / L; in the aerobic process, mixed water is formed by raw sorbic acid water and clear water, an aerobic composite strain is added to the mixed water to be mixed and activated, the mixing temperature is at 20-35 DEG C, the aeration DO is controlled at 1-6 mg / L, the pH is controlled in the range of 6-9, and activation is completed after the reaction is performed 5-50 hours. Through strain compounding, the sorbic acid wastewater is effectively treated, with a single biochemical process, only little biochemical sludge is produced, and the operation cost is low.

Description

technical field [0001] The invention relates to a method for treating wastewater, in particular to a method for treating sorbic acid wastewater. Background technique [0002] The concentration of organic pollutants, heavy pollution, and refractory degradation of sorbic acid wastewater make it difficult for general chemical wastewater treatment methods to achieve good treatment results. [0003] With the continuous improvement of environmental protection requirements, especially the increasing requirements of ammonia nitrogen discharge, it brings certain challenges to the treatment of wastewater containing organic matter. The traditional process treatment includes A / 0, SBR, oxidation ditch, IC, UASB, CASS, A2 / 0 and other processes are difficult to efficiently remove sorbic acid wastewater, especially the treatment of industrial sewage to meet ammonia nitrogen standards is even more difficult, so some of its bio-enhancement technologies and even online bio-enhancement technol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/00C02F1/52C02F3/02C02F3/28C02F3/341C02F3/348C02F9/00Y02E50/30
Inventor 薛金全张新华朱丹陆颖媛
Owner NANTONG ACETIC ACID CHEM
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