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A pretreatment method for improving the efficiency and stability of abr for treating aquaculture wastewater

A technology for the stability of aquaculture wastewater, applied in chemical instruments and methods, anaerobic digestion treatment, biological treatment devices, etc., can solve the problems of complex components, low removal rate of ammonia nitrogen, high concentration of ammonia nitrogen, etc., to achieve high removal rate, effluent Stable effect and high removal rate

Active Publication Date: 2021-06-22
LONGYAN UNIV
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Problems solved by technology

[0005] In recent years, many scholars have carried out research on the treatment of complex wastewater by ABR. There are many types of complex wastewater treated by ABR, including molasses wastewater, baker's yeast production wastewater, printing and dyeing wastewater, pharmaceutical wastewater, sorbic acid wastewater, glyphosate wastewater, tannery wastewater, PTA wastewater, etc., and the removal rate of COD is above 75%, but the removal rate of ammonia nitrogen is not high
However, the concentration of ammonia nitrogen in the breeding wastewater is very high, and the composition is complex. Therefore, there are few reports on the use of ABR to treat pig farm wastewater with complex components, and it is limited to the experimental exploration stage.
The current experimental exploration shows that the factors affecting the anammox in the reactor are complex, such as pH value, organic matter concentration, high concentration of ammonia nitrogen and nitrite nitrogen, and toxic and harmful substances, etc. The law and characteristics of microbial action are not clear, so Leading to poor wastewater treatment effect, unstable operation and other problems

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  • A pretreatment method for improving the efficiency and stability of abr for treating aquaculture wastewater
  • A pretreatment method for improving the efficiency and stability of abr for treating aquaculture wastewater
  • A pretreatment method for improving the efficiency and stability of abr for treating aquaculture wastewater

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Embodiment 1

[0035] The pretreatment method that the improvement ABR of the present embodiment handles culture wastewater efficiency and stability may further comprise the steps:

[0036] S1: ABR anaerobic baffle reactor start-up stage

[0037] S1.1: Collection of sludge

[0038] The activated sludge was collected from the sewage treatment plant (Longyan Longjin Water Purification Co., Ltd.), and the sludge was from the activated sludge (not domesticated sludge) of the sewage treatment plant of Longyan Longjin Water Purification Co., Ltd. The level distribution of taxa is as follows: Proteobacteria 48.13%, Chloroflexi 5.26%, Bacteroidetes 13.97%, Acidobacteria 13.74%, Actinobacteria ) 5.72%, Firmicutes 0.35%, Ignavibacteriae 0.42%, Saccharibacteria 6.71%, Chlorobi 1.28%, Gemmatimonadetes ) 1.03%, Planctomycetes 0.01%.

[0039] S1.2: Synthetic wastewater

[0040] The components and concentrations in the synthetic wastewater are: NH 4 + -N 26mg / L, NO 2 - -N 26mg / L, NaHCO 3 1250mg / L...

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Abstract

The invention discloses a pretreatment method for improving the efficiency and stability of ABR for treating aquaculture wastewater, comprising the following steps: S1: starting the ABR anaerobic baffle reactor; S2: increasing the NH 4 + ‑N concentration method to preliminarily adjust the bacteria in the activated sludge; S3: Use the method of shortening the hydraulic retention time in stages to adjust the bacteria in the activated sludge. The ABR reactor treated with the pretreatment method has the advantages of stable operation, long operation time, high ammonia nitrogen and COD aquaculture wastewater, and good treatment effect.

Description

technical field [0001] The invention belongs to the technical field of agricultural wastewater treatment, and in particular relates to a pretreatment method for improving the efficiency and stability of ABR for treating aquaculture wastewater. Background technique [0002] With the rapid development of large-scale pig farms, the impact of a large amount of wastewater produced on the environment has become increasingly prominent. Wastewater has a large amount of discharge and contains high concentrations of COD, TN (mainly NH 4 + -N form) and TP and other characteristics, and often accompanied by the characteristics of pollutants such as disinfectant water, heavy metals, residual veterinary drugs, and various zoonotic pathogens, if not effectively treated, it will affect my country's environment and agricultural ecological production pose a direct threat. However, the pig farming industry is a low-profit industry, and it is impossible to invest a lot of money in wastewater ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/28C02F3/34C02F101/16C02F103/20
CPCC02F3/284C02F3/34C02F2101/16C02F2103/20C02F2203/006
Inventor 夏春雨孙巍黄燕江倩云高佳慧郑香玉黄志君李金连王浩彭艳陈传志林剑南
Owner LONGYAN UNIV
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