Enhanced CFBR process applied to treatment of wig wastewater containing high ammonia nitrogen

A technology for wastewater treatment and high ammonia nitrogen, which is applied in natural water treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. It can solve the problem of high operating cost and energy consumption, low ammonia nitrogen and total nitrogen removal efficiency, etc. problem, to achieve the effect of reducing processing cost and energy consumption, low processing cost and energy consumption, and convenient operation

Active Publication Date: 2021-08-24
FUDAN UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of low removal efficiency of ammonia nitrogen and total nitrogen in high ammonia nitrogen-containing wig wastewater by traditional biological denitrification technology, high operating cost and high energy consumption, the p

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  • Enhanced CFBR process applied to treatment of wig wastewater containing high ammonia nitrogen

Examples

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Embodiment 1

[0030] In this example, the FDN-01 and FDN-02 strains were inserted into LB liquid medium, and after being expanded and cultivated in a shaker for 3 days, an efficient denitrification engineering bacterial agent was prepared. The water volume of high ammonia nitrogen wig wastewater is 8 m 3 / d, the water temperature is 25°C, the pH is 8.1, the initial concentration of COD is 386 mg / L, the initial concentration of ammonia nitrogen is 480 mg / L, the initial concentration of nitrate nitrogen is 59 mg / L, and the initial concentration of nitrite nitrogen is 0.6 mg / L, the initial concentration of total nitrogen was 600 mg / L. Add 2000 mL of high-efficiency denitrification engineering bacteria to the anoxic tank and hypoxic tank of the "CFBR treatment device", respectively, and the MLSS concentration is about 3000 mg / L. After the activated sludge in the anoxic tank and the low-oxygen tank were co-cultivated with high-efficiency denitrification engineering bacteria for 7 days, the wig...

Embodiment 2

[0033] In this example, the FDN-01 and FDN-02 strains were inserted into LB liquid medium, and after being expanded and cultivated in a shaker for 3 days, an efficient denitrification engineering bacterial agent was prepared. The water volume of high ammonia nitrogen wig wastewater is 5.5 m 3 / d, the water temperature is 18°C, the pH is 7.4, the initial concentration of COD is 858 mg / L, the initial concentration of ammonia nitrogen is 262 mg / L, the initial concentration of nitrate nitrogen is 22 mg / L, and the initial concentration of nitrite nitrogen is 0.35 mg / L, the initial concentration of total nitrogen was 309 mg / L. Add 2000 mL of high-efficiency denitrification engineering bacteria to the anoxic tank and hypoxic tank of the "CFBR treatment device", and the MLSS concentration is about 2800 mg / L. After the activated sludge in the anoxic tank and the hypoxic tank were co-cultivated with high-efficiency denitrification engineering bacteria for 7 days, the wig wastewater wa...

Embodiment 3

[0036] In this example, the FDN-02 strain was inserted into LB liquid medium, and expanded culture was carried out in a shaker for 7 days to prepare a high-efficiency denitrification engineering bacterial agent. The water volume of high ammonia nitrogen wig wastewater is 2.0 m 3 / d, the water temperature is 4°C, the pH is 6.0, the initial concentration of COD is 184 mg / L, the initial concentration of ammonia nitrogen is 123 mg / L, the initial concentration of nitrate nitrogen is 38 mg / L, and the initial concentration of nitrite nitrogen is 15.6 mg / L, the initial concentration of total nitrogen was 190 mg / L. Add 1000 mL of high-efficiency denitrification engineering bacteria to the anoxic tank and hypoxic tank of the "CFBR treatment device", respectively, and the MLSS concentration is about 2500 mg / L. After the activated sludge in the anoxic tank and the hypoxic tank were co-cultivated with high-efficiency denitrification engineering bacteria for 7 days, the wig wastewater was...

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Abstract

The invention discloses an enhanced CFBR process applied to treatment of wig wastewater containing high ammonia nitrogen. The method comprises the steps: performing amplification culture on Thauera sp. FDN-01 and Paracoccus sp. FDN-02 strains to prepare a high-efficiency denitrification engineering bacterial agent, respectively adding the high-efficiency denitrification engineering bacterial agent into an anoxic tank and a hypoxic tank of a CFBR treatment device, and intensively removing high-concentration ammonia nitrogen and total nitrogen in the wig wastewater under the action of various denitrification functional enzymes. The process disclosed by the invention is applied to treatment of high-concentration ammonia nitrogen in the actual wig wastewater, the effluent quality stably reaches and is far lower than the A-level limit value of 'Water quality standard for sewage discharged into urban sewers' (GB/T 31962-2015) under the condition of normal temperature, and the removal rate of ammonia nitrogen and total nitrogen in the wig wastewater is high. The method is free of secondary pollution to the environment and low in treatment cost and energy consumption.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to an enhanced CFBR process applied to the treatment of wig wastewater containing high ammonia nitrogen. Background technique [0002] In recent years, with the rapid economic development and the improvement of people's living standards, wearing wigs has gradually become a fashion. However, a large amount of industrial wastewater containing high ammonia nitrogen will be discharged during the wig production process. If it is discharged directly without any treatment, it will cause serious pollution to the water environment. At present, the methods for denitrification of industrial wastewater include physical methods, chemical methods and biological treatment methods. Biological treatment has gained widespread attention due to its low investment, simple operation, low secondary pollution, and low operating costs. [0003] Wig industrial wastewater...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/34C02F101/16C02F103/34
CPCC02F3/30C02F3/34C02F2101/16C02F2103/34
Inventor 李洪静马军宋润之
Owner FUDAN UNIV
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