A kind of in-situ activation method of filler aging biofilm
An activation method and biofilm technology, which is applied in chemical instruments and methods, sustainable biological treatment, biological water/sewage treatment, etc., can solve problems such as inability to activate biofilm in situ, and achieve continuous high-efficiency treatment capacity and work intensity And treatment cost reduction, environmental friendliness effect
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Embodiment 1
[0035] Such as figure 1 As shown, the treatment process of primary treatment effluent is: firstly treated by biofilm reactor, then advanced treatment after sedimentation, a method of in-situ activation of aging biofilm with filler, and aerobic treatment in a municipal sewage treatment plant. Combination filler biofilm activation. Among them, the soft filler is polyacrylonitrile. The soft filler in the combined filler is covered by physical and chemical sludge and biochemical sedimentation sludge, forming a series of concave-convex columns, and the gaps between the fillers are narrowed or formed into sheets. All are black slime under the surface biofilm, and the thickness of the biofilm is all above 20mm. The advanced treatment process in this municipal sewage treatment plant is ultrafiltration-reverse osmosis.
[0036] The concrete activation process of the present embodiment is:
[0037] Step 1. Collect 500mL of the effluent from the biofilm reactor and 500mL of the efflue...
Embodiment 2
[0044] An in-situ activation method of an aging filler biofilm in this embodiment is used to activate a certain aerobic soft filler biofilm. The soft filler in the biofilm reactor is wrapped by physical sludge and biochemical sediment sludge, forming a stick shape with different thicknesses. The bottom of the surface biofilm is black sludge with foul smell. The average thickness of the biofilm is about 40mm, the water in the reactor is turbid and the sludge sedimentation shape is poor, and there is no advanced treatment process.
[0045] The concrete activation process of the present embodiment is:
[0046] Step 1. Collect 500mL of effluent from the biofilm reactor as a water sample, add 1mL of sulfuric acid for acidification, and then take 25mL of sample for measurement. The specific steps refer to GB 11893-89, and the total phosphorus concentration in the effluent of the biofilm reactor is determined to be 0.5± 0.04mg / L;
[0047] Step 2, the biofilm reactor (5m * 15m * 2....
Embodiment 3
[0052] The in-situ activation method of an aging biofilm with fillers in this example is basically the same as in Example 1, except that the concentration of total phosphorus after advanced treatment in this example is lower than 0.03 mg / L, and Scheme III is adopted. That is, no need to add ferritin in step 3, after repeating steps 2, 3, and 6 5 times, the biofilm basically falls off, the average thickness is about 0.1cm, and the COD Cr The removal rate is effectively increased by about 19%, and the in-situ activation of biofilm is completed.
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