A method for processing and recycling waste slurry from bobbin paper production
A recycling method and waste slurry technology, applied in the field of environmental engineering, can solve problems such as poor resource recovery, reduced operating costs, high energy consumption and high drug consumption, and achieve the effects of recycling, reducing operating costs, and simplifying operations
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Embodiment 1
[0032] The process flow of two-stage bobbin paper production waste slurry treatment and recycling process is as follows: figure 1 shown. The first-stage treatment is an adsorption process. The adsorption reactor R1 has a diameter of 40cm, a height of 120cm, and an effective volume of 500L. The second-stage treatment is a biochemical reaction process. The biochemical reactor R2 has a diameter of 20cm, a height of 120cm, and an effective volume of 125L. Both reactors R1 and R2 (SBR reactors) adopt the method of bottom water inlet and bottom aeration, and the water outlet is set at a position 50 cm away from the bottom of the reactor. The hydraulic retention times of reactors R1 and R2 are 1h and 3h respectively, and the dissolved oxygen is controlled at 0.2-0.8mg / L and 2.0-3.0mg / L respectively. Add NH to the adjustment pool according to the ratio of COD:N:P=100:5:1 4 Cl and K 2 HPO 4 Adjust nitrogen and phosphorus to ensure the growth of microorganisms in the second biochemi...
Embodiment 2
[0048] The process flow of two-stage bobbin paper production waste slurry treatment and recycling process is as follows: figure 1 shown. The reactor is consistent with Example 1.
[0049] Aerobic sludge particles (MLSS, MLVSS, SVI were 7.1mg / L, 3.5mg / L, 57.0mL / g) were inoculated in the adsorption tank and the biochemical tank, and the COD and SS concentrations of the influent waste slurry were 8200 and 2900mg / L, start the reaction. The bobbin paper production waste slurry enters the adsorption tank first, and the solid suspended matter in the waste slurry is absorbed by the aerobic granular sludge in the adsorption tank, and then enters the adjustment tank. The adjustment tank is based on the ratio of COD:N:P=100:5:1 Dosing NH separately 4 Cl and K 2 HPO 4 Nitrogen and phosphorus are adjusted, and then enter the biochemical pool for aerobic treatment under the action of aerobic granular sludge, and the treated effluent is discharged.
[0050] Among them, the hydraulic re...
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