Method for removing diclofenac in sewage in strengthened manner on basis of enriched nitrifying bacteria
A technology of nitrifying bacteria and diclofenac, applied in chemical instruments and methods, oxidized water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., to achieve the effects of high stability, simple equipment and strong adaptability
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Embodiment 1
[0030] A method based on enriching nitrifying bacteria to strengthen the removal of diclofenac in sewage, comprising the following steps:
[0031] 1) Domesticate and enrich the nitrifying bacteria by gradually increasing the ammonia nitrogen load and gradually reducing the organic carbon load in the MBR. The enriched nitrifying bacteria are domesticated for a period of three months, and then the activated sludge is mixed with the enriched nitrifying bacteria to obtain Enrichment of domesticated nitrifying sludge;
[0032] 2) Make the sewage flow to the secondary settling tank, carry out solid-liquid separation, and separate to obtain supernatant and sediment;
[0033] 3) Pump the supernatant separated from step 1) into the MBR that enriches and domesticates the nitrification sludge. In the MBR, the concentration of the nitrification sludge is controlled to be 1000 mg / L, and the sodium bicarbonate for pH adjustment is 500 mg / L. Through real-time pH Measure and add sodium bicar...
experiment example 2
[0036] A method based on enriching nitrifying bacteria to strengthen the removal of diclofenac in sewage, comprising the following steps:
[0037] 1) Domesticate and enrich the nitrifying bacteria by gradually increasing the ammonia nitrogen load and gradually reducing the organic carbon load in the MBR. The enriched nitrifying bacteria are domesticated for a period of three months, and then the activated sludge is mixed with the enriched nitrifying bacteria to obtain Enrichment of domesticated nitrifying sludge;
[0038] 2) Make the sewage flow to the secondary settling tank, carry out solid-liquid separation, and separate to obtain supernatant and sediment;
[0039]3) Pump the supernatant separated from step 1) into the MBR that enriches and domesticates the nitrification sludge. In the MBR, the concentration of the nitrification sludge is controlled to be 1000 mg / L, and the sodium bicarbonate for pH adjustment is 500 mg / L. Through real-time pH Measure and add sodium bicarb...
Embodiment 3
[0042] A method based on enriching nitrifying bacteria to strengthen the removal of diclofenac in sewage, comprising the following steps:
[0043] 1) Domesticate and enrich the nitrifying bacteria by gradually increasing the ammonia nitrogen load and gradually reducing the organic carbon load in the MBR. The enriched nitrifying bacteria are domesticated for a period of three months, and then the activated sludge is mixed with the enriched nitrifying bacteria to obtain Enrichment of domesticated nitrifying sludge;
[0044] 2) Make the sewage flow to the secondary settling tank, carry out solid-liquid separation, and separate to obtain supernatant and sediment;
[0045] 3) Pump the supernatant separated from step 1) into the MBR that enriches and domesticates the nitrification sludge. In the MBR, the concentration of the nitrification sludge is controlled to be 1000 mg / L, and the sodium bicarbonate for pH adjustment is 500 mg / L. Through real-time pH Measure and add sodium bicar...
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