Magnetic separation device and method for dynamically magnetizing and dosing to treat municipal sewage with high efficiency and low consumption
A magnetic separation device and municipal sewage technology, which is applied in the field of magnetic separation devices for dynamic magnetic addition and dosing to treat municipal sewage with high efficiency and low consumption. Water requirements and other issues to achieve the effect of avoiding flying dust and floating
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Embodiment 1
[0036] refer to figure 1 , a magnetic separation device for treating municipal sewage with dynamic magnetic addition and dosing with high efficiency and low consumption, including:
[0037] Adsorption reaction box 5, its water inlet end is device water inlet end;
[0038] The magnetic coagulation reaction box 6 includes a primary reaction box and a secondary reaction box, the water inlet of the primary reaction box is connected with the water outlet of the adsorption reaction box 5, and the water inlet of the secondary reaction box is connected with the water outlet of the primary reaction box;
[0039] The activated carbon dosing device 4 is used to add activated carbon to the adsorption reaction box 5. In this embodiment, the activated carbon dosing device 4 is a wet dosing device, which is mainly composed of three parts: a feeding bin, a screw conveyor, and a stirring box. The bin is in the shape of a funnel, the bottom is connected to the mixing box, the upper part is cov...
Embodiment 2
[0054] refer to figure 1 and figure 2 , on the basis of embodiment 1, add automatic control, specifically, set pollutant on-line monitoring system 1 at the water inlet end of adsorption reaction box 5, on-line monitor SCOD, SS, TP of water inlet, utilize central controller 2 to receive The monitoring data of the pollutant online monitoring system 1 analyzes real-time water quality data, and after accurate accounting, feeds the dosage data back to the automatic dosing device composed of activated carbon dosing device 4, PAC dosing device, magnetic seed dosing device and PAM dosing device. The dosing system 3 realizes the precise dosing of activated carbon, PAC, magnetic seeds and PAM by changing the frequency converter control of the metering pump.
[0055] In the process, the SCOD, SS, and TP of the influent are monitored in real time, and the dosage of activated carbon, PAC, magnetic seeds, and PAM is adjusted in real time according to the monitoring data, thereby realizing...
Embodiment 3
[0057] On the basis of embodiment 2, add magnetic seed recovery system 8, magnetic seed recovery system 8 mainly comprises floc disperser and magnetic roller, and it communicates with the mixed magnetic floc outlet of magnetic separation system 7, will mix the magnetic floc in mixed magnetic floc The magnetic seeds are screened out and sent to the magnetic seed dosing device for recycling.
[0058] Taking a municipal sewage treatment plant in Beijing as an example, the COD of wastewater treated by it is 59-230mg / L, the SCOD is 26-86mg / L, the TP is 1.36-4.24mg / L, and the SS is 90-110mg / L. Water inlet method, the water inlet flow rate is 10-12.5m 3 / h. The pollutant online monitoring system collects real-time data and feeds it back to the central controller. After analysis and calculation, the automatic dosing system is controlled to accurately add various chemicals to the reactor. Among them, the dosage of PAC (mg / L)=24*TP target removal amount (mg / L)-17; the dosage of PAM is...
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