Printing and dyeing wastewater treatment technique
A technology for treating process, printing and dyeing wastewater, applied in textile industry wastewater treatment, multi-stage water treatment, water/sewage treatment and other directions, can solve the problems of unstable effluent quality, high energy consumption, short flow, etc., and achieve stable treatment effect. , the effect of high pollutant concentration and deep chromaticity
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Embodiment 1
[0075] Embodiment 1 A kind of printing and dyeing wastewater treatment process, such as figure 1 As shown, the specific steps are as follows:
[0076] (1) The desizing wastewater first enters the adjustment tank, and acid is added to adjust the pH, so that the pH is between 6-8, and the pump is lifted to the anaerobic reactor. Under the action of anaerobic bacteria, the organic matter in the wastewater is converted into methane , carbon dioxide and water, and at the same time, the refractory macromolecular organic matter in the wastewater is opened and broken to become a small molecular organic matter, and then the supernatant flows to the regulating sedimentation tank by itself;
[0077] (2) After the other comprehensive wastewater except desizing wastewater is collected through the pipeline and the anaerobic desizing water enters the regulating sedimentation tank, it settles for 8 hours, and the supernatant is lifted to the anaerobic reaction tank by the pump. The function ...
Embodiment 2
[0082] Embodiment 2 handles the final sludge that printing and dyeing wastewater treatment process of the present invention produces
[0083] The final sludge produced by the whole treatment process is sent to the sludge thickening tank, dehydrated by the dehydrator, and the dehydrated sludge is incinerated without secondary pollution; the supernatant from the sludge thickening tank and the dehydrator come out The water is sent to the regulating sedimentation tank for treatment.
Embodiment 3
[0084] The anaerobic reactor in the treatment process of embodiment 3 of the present invention
[0085] Such as figure 2 As shown, the anaerobic reactor includes a precipitation zone 1, an upper layer three-phase separation zone 2, a lower layer three-phase separation zone 3 and a swirling water distribution zone 4 from top to bottom. There are two gas-liquid separators 6 and a pulse water distributor 7 above the area 1, and the pulse water distribution pipe 8 is provided at the bottom of the pulse water distributor 7, and the pulse water distribution pipe 8 extends to the reflection cone 9 at the bottom of the swirl water distribution area 4 Inside, the top of the pulse water distributor 7 is connected to the water inlet pipe 10, the upper three-phase separation zone 2 is provided with an upper three-phase separator 11, the lower three-phase separation zone 3 is provided with a lower three-phase separator 12, and the upper three-phase The separator 11 is connected to the ga...
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