Integrated magnetic precipitation equipment for industrial wastewater treatment

Abstract

The utility model relates to the technical field of wastewater treatment, in particular to integrated magnetic precipitation equipment for industrial wastewater treatment, which comprises a magnetic coagulation system, a magnetic precipitation system and a magnetic seed recycling system which are integrated in a treatment box. The magnetic coagulation system comprises a PAC mixing box, a magnetic seed mixing box and a PAM flocculation box, the magnetic precipitation system is a magnetic precipitation tank, the magnetic seed recycling system comprises a powerful dispersion machine and a magnetic circulator, and a supernate treatment system and a sludge treatment system are arranged on the outer side of a treatment box body; wastewater is flocculated through the magnetic coagulation system, floccules are precipitated through the magnetic precipitation system, magnetic floccules are large in weight and high in precipitation speed, the wastewater treatment efficiency and the wastewater treatment effect are improved, meanwhile, magnetic seeds in the magnetic floccules are recycled, the equipment production cost is reduced, and the wastewater treatment efficiency and the wastewater treatment effect are improved. Generation of greenhouse gas is effectively reduced in the treatment process, and economic benefits and environmental benefits are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to wastewater treatment technical field, concretely relates to a kind of integrated magnetic precipitation equipment for industrial wastewater treatment. BACKGROUND

[0002] Industrial wastewater includes production wastewater, production wastewater and cooling water, which refers to wastewater and waste liquid generated during industrial production, containing industrial production materials, intermediate products, by-products and pollutants generated during production, among which the most serious pollution includes heavy metal wastewater, which refers to wastewater containing heavy metals discharged during mining, metallurgy, machinery manufacturing, chemical industry, electronics and instrumentation, and its water quality and quantity are related to production process, and heavy metals in wastewater cannot be decomposed and destroyed, but only can be transferred to its location and transformed into physical and chemical form.

[0003] With the continuous development of industrial park, the proportion of industrial wastewater in mixed influent of park wastewater treatment plant is increasing, and the increase of refractory organic matter leads to the deviation of influent from design value, the decrease of wastewater biodegradability and the increase of biological treatment difficulty, which further leads to slow settling rate, large footprint of sedimentation tank and unstable settling effect of current wastewater materialization section treatment process.

[0004] Therefore, it is necessary to invent an integrated magnetic precipitation equipment for industrial wastewater treatment to solve the above problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing an integrated magnetic precipitation equipment for industrial wastewater treatment to solve the problems of slow settling rate, large footprint of sedimentation tank and unstable settling effect of wastewater materialization section treatment process in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: an integrated magnetic precipitation equipment for industrial wastewater treatment, comprising a magnetic coagulation system, a magnetic precipitation system and a magnetic seed recycling system, wherein the magnetic coagulation system, the magnetic precipitation system and the magnetic seed recycling system are integrated inside a treatment box, the magnetic coagulation system comprises a PAC mixing box, a magnetic seed mixing box and a PAM flocculation box, the magnetic precipitation system is a magnetic precipitation tank, the magnetic seed recycling system comprises a powerful disperser and a magnetic circulating machine, and the outside of the treatment box is provided with a supernatant treatment system and a sludge disposal system.

[0007] By adopting the above technical scheme, the magnetic coagulation system coagulates and flocculates wastewater, and the magnetic precipitation system precipitates flocculation, and since the weight of magnetic flocculation is large, its settling speed is fast, which effectively improves the settling speed of wastewater and the efficiency of wastewater treatment, and the magnetic seed recycling system recycles and reuses magnetic seeds in magnetic flocculation, thereby reducing the production cost of equipment.

[0008] Optionally, the processing box has a size of 3.8m*2.5m*4.2m and a floor area of 9.5m2.

[0009] By adopting the technical scheme, the size of the integrated magnetic precipitation processing box is smaller than the floor area of a traditional precipitation system.

[0010] Optionally, the magnetic precipitation system is arranged at the rear end of the magnetic coagulation system, and the magnetic seed recycling system is arranged at the rear end of the magnetic precipitation system.

[0011] By adopting the technical scheme, the wastewater after flocculation by the magnetic coagulation system is discharged into the magnetic precipitation system for precipitation, and the magnetic seed recycling system processes the flocculent precipitate in the magnetic precipitation system.

[0012] Optionally, the supernatant treatment system is arranged at the rear end of the magnetic precipitation system, and the sludge disposal system is arranged at the rear end of the magnetic seed recycling system.

[0013] By adopting the technical scheme, the supernatant treatment system processes the supernatant in the magnetic precipitation system, and the sludge treatment system processes the sludge after processing by the magnetic seed recycling system.

[0014] Optionally, the sludge disposal system is a sludge concentration tank.

[0015] By adopting the technical scheme, the sludge concentration tank processes the precipitated sludge, so that the sludge meets the discharge standard.

[0016] Optionally, the front end of the magnetic coagulation system is provided with an adjusting tank.

[0017] By adopting the technical scheme, the adjusting tank is used for adjusting the PH value of the raw water.

[0018] Optionally, the surfaces of the PAC mixing box, the magnetic seed mixing box and the PAM flocculation box are provided with feeding modules.

[0019] By adopting the technical scheme, the feeding modules can improve the feeding precision of the PAC mixing box, the magnetic seed mixing box and the PAM flocculation box, and guarantee the flocculation quality.

[0020] In the above technical scheme, the technical effects and advantages of the present application are provided.

[0021] 1. The utility model discloses a magnetic coagulation system is carried out to the wastewater flocculation, and through the magnetic precipitation system is carried out to the flocculation deposition, because the magnetic floc weight is bigger, its settlement speed is faster, effectively improves the wastewater settlement speed, improves the wastewater treatment efficiency, 2. The utility model discloses a magnetic seed recycling system is recycled to the magnetic seed in the magnetic floc, reduces the equipment production cost, and effectively reduces greenhouse gas generation in the treatment process, improves economic benefit and environmental benefit. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is the whole structure schematic diagram of the utility model.

[0023] Mark explanation:

[0024] 1, magnetic coagulation system, 11, PAC mixing box, 12, magnetic seed mixing box, 13, PAM flocculation box, 2, magnetic precipitation system, 21, magnetic precipitation tank, 3, magnetic seed recycling system, 31, strong dispersion machine, 32, magnetic circulating machine, 4, supernatant treatment system, 5, sludge disposal system. DETAILED DESCRIPTION

[0025] In order to make the technical personnel of the prior art better understand the technical scheme of the utility model, the utility model will be introduced further in detail below with the drawings.

[0026] The utility model provides a kind of integrated magnetic precipitation equipment for industrial wastewater treatment as Figure 1 As shown in formula, including magnetic coagulation system 1, magnetic precipitation system 2, magnetic seed recycling system 3, magnetic coagulation system 1, magnetic precipitation system 2 and magnetic seed recycling system 3 are integrated in processing box body interior, and processing box body size is 3.8m*2.5m*4.2m, floor area is 9.5㎡, and the outside of processing box body is provided with supernatant treatment system 4 and sludge disposal system 5, and the front end of magnetic coagulation system 1 is provided with adjusting pool.

[0027] Among them, raw water enters adjusting pool interior, at this time, add lime / heavy metal collector to adjust the PH value of raw water in adjusting pool interior, when raw water PH value is adjusted to neutral, raw water is pumped into magnetic coagulation system 1 in processing box body interior by water pump, and magnetic seed, PAC agent (polyaluminium chloride coagulant) and PAM agent (polyacrylamide flocculant) are added in sequence, form magnetic floc after sufficient stirring, at this time, input the water after reaction into magnetic precipitation system 2 and carry out solid-liquid separation, supernatant is discharged to supernatant treatment system 4 and is handled, bottom sludge enters magnetic seed recycling system 3 and is handled, and the magnetic seed in sludge is recycled and then added to magnetic coagulation system 1, and the remaining sludge is discharged to sludge treatment system 5 and is handled.

[0028] In addition, the magnetic coagulation system 1 comprises a PAC mixing box 11, a magnetic seed mixing box 12, a PAM flocculation box 13, the magnetic precipitation system 2 is a magnetic precipitation tank 21, the magnetic seed recycling system 3 comprises a strong disperser 31 and a magnetic circulating machine 32, the sludge disposal system 5 is a sludge thickening tank, the magnetic precipitation system 2 is arranged at the rear end of the magnetic coagulation system 1, the magnetic seed recycling system 3 is arranged at the rear end of the magnetic precipitation system 2, the supernatant treatment system 4 is arranged at the rear end of the magnetic precipitation system 2, and the sludge disposal system 5 is arranged at the rear end of the magnetic seed recycling system 3. The surfaces of the PAC mixing box 11, the magnetic seed mixing box 12 and the PAM flocculation box 13 are provided with feeding modules.

[0029] Specifically, after the pH value of the raw water is neutralized, the raw water is sequentially fed into the PAC mixing box 11, the magnetic seed mixing box 12 and the PAM flocculation box 13 for reaction. The feeding modules feed the PAC agent, the magnetic seed and the PAM agent into the PAC mixing box 11, the magnetic seed mixing box 12 and the PAM flocculation box 13, respectively. Meanwhile, the PAC mixing box 11, the magnetic seed mixing box 12 and the PAM flocculation box 13 are all provided with stirring modules. The stirring modules stir the wastewater, so that the wastewater and the PAC agent, the magnetic seed and the PAM agent fully react, so that the magnetic seed is quickly formed into larger magnetic flocs. Next, the magnetic precipitation tank 21 precipitates the reacted wastewater. Since the magnetic seed in the magnetic flocs has a high specific gravity, the magnetic flocs with high specific gravity quickly settle in the magnetic precipitation tank 21, so that the suspended solids in the water are quickly and intensively separated. In addition, the magnetic flocs at the bottom of the magnetic precipitation tank 21 enter the strong disperser 31, so that the magnetic flocs are dispersed and flocculated at high speed, so that the magnetic seed is separated from the non-magnetic flocs. The separated magnetic seed is recycled under the magnetic attraction of the magnetic circulating machine 32, and is fed into the feeding module on the upper side of the magnetic seed mixing box 12, so that the magnetic seed is fed into the magnetic seed mixing box 12 again. In addition, the sludge thickening tank concentrates and treats the non-magnetic flocs.

[0030] It needs to be supplemented that, in the continuous experiment, after the raw water is fed with lime / heavy metal collectors, the suspended solid concentration is between 470 mg / L and 1280 mg / L, the average influent suspended solid concentration is 873.6 mg / L, the effluent suspended solid concentration is stably within 30 mg / L, the average effluent suspended solid concentration is 11.07 mg / L, the removal rate is at least 95.8%, the highest removal rate can reach 99.6%, and the average removal rate is 98.73%.

[0031] In addition, the magnetic seed recovery rate is sampled and analyzed in the continuous experiment. The specific data are shown in the following table. The magnetic seed recovery rate is greater than 99%:

[0032]

[0033] Note: magnetic seed effective concentration = magnetic seed pool concentration - influent SS concentration; magnetic seed loss = magnetic seed effective concentration difference (treatment 1000 tons of water); magnetic seed recovery rate = magnetic seed loss / magnetic seed initial effective concentration*100%.

[0034] At the same time, the magnetic seed tons of water cost of treating the industrial wastewater raw water is 0.046 yuan / m 3 , and further effectively improve the removal rate of COD, SS and TP in wastewater, achieve the best economic benefit and effluent water quality, improve the treatment efficiency of wastewater and reduce the production cost of equipment.

[0035] The working principle of the utility model is: through the magnetic coagulation system 1 to the wastewater flocculation, and through the magnetic precipitation system 2 to the flocculation precipitation, because the weight of magnetic flocculation is larger, its settlement speed is faster, effectively improve the wastewater settling velocity, improve the wastewater treatment efficiency and wastewater treatment effect, at the same time, the magnetic seed recycling system 3 recycles the magnetic seed in the magnetic flocculation, reduces the production cost of equipment, and effectively reduces the greenhouse gas generation in the treatment process, improves the economic benefit and environmental benefit.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the utility model and do not limit the utility model, various changes and improvements of the utility model can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model.

Claims

1. An integrated magnetic sedimentation device for industrial wastewater treatment, comprising a magnetic coagulation system (1), a magnetic sedimentation system (2), and a magnetic seed recycling system (3), characterized in that: The magnetic coagulation system (1), magnetic sedimentation system (2) and magnetic seed recycling system (3) are integrated inside the treatment tank. The magnetic coagulation system (1) includes a PAC mixing tank (11), a magnetic seed mixing tank (12) and a PAM flocculation tank (13). The magnetic sedimentation system (2) is a magnetic sedimentation tank (21). The magnetic seed recycling system (3) includes a high-power disperser (31) and a magnetic circulator (32). The supernatant treatment system (4) and sludge disposal system (5) are provided on the outside of the treatment tank.

2. The integrated magnetic sedimentation device for industrial wastewater treatment according to claim 1, characterized in that: The processing box measures 3.8m x 2.5m x 4.2m and occupies an area of ​​9.5㎡.

3. The integrated magnetic sedimentation device for industrial wastewater treatment according to claim 1, characterized in that: The magnetic precipitation system (2) is located at the rear end of the magnetic coagulation system (1), and the magnetic seed recycling system (3) is located at the rear end of the magnetic precipitation system (2).

4. The integrated magnetic sedimentation device for industrial wastewater treatment according to claim 1, characterized in that: The supernatant treatment system (4) is located at the rear end of the magnetic sedimentation system (2), and the sludge disposal system (5) is located at the rear end of the magnetic seed recycling system (3).

5. An integrated magnetic sedimentation device for industrial wastewater treatment according to claim 4, characterized in that: The sludge treatment system (5) is a sludge thickening tank.

6. The integrated magnetic sedimentation device for industrial wastewater treatment according to claim 1, characterized in that: The front end of the magnetic coagulation system (1) is provided with an adjustment tank.

7. The integrated magnetic sedimentation device for industrial wastewater treatment according to claim 1, characterized in that: The surfaces of the PAC mixing box (11), magnetic seed mixing box (12), and PAM flocculation box (13) are all equipped with feeding modules.

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