A device system for treating sulfate wastewater and its treatment method
A wastewater treatment and sulfate technology, applied in the field of environmental engineering, can solve the problems of general wastewater treatment, inability to obtain elemental sulfur, and affect economic benefits, etc., achieve green harmless and resource-based treatment, and improve economical and economical efficiency Good results
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Embodiment 1
[0101] The device system of the sulfate wastewater treatment of the present embodiment is as figure 1 As shown, the system includes: anaerobic reaction unit, stripping unit, absorption unit, biological desulfurization unit and gas storage unit;
[0102] The anaerobic reaction unit comprises an anaerobic reactor 1 and a regulating tank 2, and the liquid outlet of the anaerobic reactor 1 is connected with the inlet of the regulating tank 2 and the liquid inlet of the stripping unit respectively, and the anaerobic reactor 1 The liquid inlet of the liquid inlet is connected with the liquid outlet of the stripping unit, the gas outlet of the anaerobic reactor 1 is connected with the gas inlet of the absorption unit, the inlet of the regulating tank 2 is connected with the liquid outlet of the anaerobic reactor 1 and the sulfate waste water The feed pipelines are respectively connected, and the outlet of the regulating tank 2 is connected with the liquid inlet of the stripping unit;...
Embodiment 2
[0117] The device system for the sulfate wastewater treatment of this embodiment is the same as that of Embodiment 1.
[0118] The sulfate wastewater treated in this example is real pharmaceutical wastewater, and the wastewater parameter is SO 4 2- Concentration 3000-3500mg / L, COD concentration 8000-10000mg / L.
[0119] The specific steps of the sulfate wastewater treatment method of the present embodiment refer to Example 1, wherein:
[0120] Maintain the hydraulic retention time (HRT) of 24h. Wastewater enters from the bottom of the anaerobic reactor for anaerobic treatment.
[0121] In the first stage, the anaerobic reactor was used to treat high-concentration pharmaceutical wastewater. The system operated continuously and stably for 20 days. During this process, the wastewater blow-off system was shut down.
[0122] In the second stage, the waste water stripping system is turned on for stripping, and at the same time, the biological sulfur oxidation system is operated t...
Embodiment 3
[0127] The device system for the sulfate wastewater treatment of this embodiment is the same as that of Embodiment 1.
[0128] The sulfate wastewater treated in this example is real pharmaceutical wastewater, and the wastewater parameter is SO 4 2- Concentration 3000-3500mg / L, COD concentration 8000-10000mg / L.
[0129] The sulfate wastewater treatment method of the present embodiment is:
[0130] (1) Maintain the hydraulic retention time (HRT) of 24 hours, under the action of sulfate-reducing bacteria and methanogens, control the pH to 6.0, perform anaerobic desulfurization on sulfate wastewater, and obtain biogas containing hydrogen sulfide and anaerobic reaction liquid , the anaerobic reaction solution is divided into two parts, one part is blown off, and the other part enters the downstream section;
[0131] (2) In the two-stage series packed tower, the anaerobic reaction liquid described in step (1) is blown off, and the anaerobic reaction liquid that is blown off is di...
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