CN212740950U - Molybdenum-containing sewage treatment equipment in molybdenum ore region - Google Patents
Molybdenum-containing sewage treatment equipment in molybdenum ore region Download PDFInfo
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- CN212740950U CN212740950U CN202020402291.8U CN202020402291U CN212740950U CN 212740950 U CN212740950 U CN 212740950U CN 202020402291 U CN202020402291 U CN 202020402291U CN 212740950 U CN212740950 U CN 212740950U
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Abstract
A molybdenum-containing sewage treatment device in molybdenum ore areas belongs to the technical field of sewage treatment. Including sinking jar, reaction system, filtration system and sludge drying system just, sinking jar, reaction system and filtration system series connection just, the sludge drying system is all connected to the bottom of jar and reaction system just sinking, sewage is in proper order through just sinking jar, reaction system and filtration system filtration back discharge. Through the utility model discloses the molybdenum-containing sewage of processing adopts multistage coagulating sedimentation method under the faintly acid condition, adjusts through each reaction part pH value, addition medicament volume and acid-base, through the precipitation that the molybdic acid root ion reaction in medicament and the sewage formed, handles the dry mud of discharge through sludge drying system, and the processing procedure has low acidity, reaction time is fast, processing cost is low, treatment facility is simple and convenient, advantage such as treatment effect is good.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, especially, relate to a molybdenum sewage treatment device is contained in molybdenum ore area.
Background
In recent years, with the rapid development of economy in China, the demand on resources such as metal ores and non-metal ores is continuously increased, the fixed asset investment of the ore mining and dressing industry is stimulated, and the ore mining and dressing industry in China is rapidly developed. The heavy metals lost in the mining process are important toxic elements of the ecological environment. When toxic elements and heavy metals invade the food chain, potential threats are brought to human beings. To solve the pollution problem of mine sewage and protect water resources and mining area environment, effective technical measures are needed to purify and reuse mine wastewater so as to protect the shortage of water resources and mining area living environment.
Molybdenum is a rare heavy metal and is also a trace element necessary for human bodies, animals and plants. However, excessive molybdenum is extremely harmful to human life and health. It can make the energy metabolism process in vivo produce obstacle, myocardial anoxia and focal necrosis, and is liable to cause renal calculus and urethral calculus, increase the incidence of iron deficiency anemia, and induce dental caries. Molybdenum is the leading culprit of esophageal cancer, and can also cause gout syndromes, arthralgia and deformity, damaged kidney, growth and development retardation, weight loss, hair loss, arteriosclerosis, connective tissue degeneration, skin diseases and other life health hidden troubles.
With the increasing influence of molybdenum pollution, the attention on the molybdenum pollution is gradually increased. At present, in several main molybdenum removal methods, namely an artificial wetland method, a chemical precipitation method, an ion exchange method and an adsorption method, the adsorption method and the artificial wetland method can effectively enrich molybdate, but the subsequent molybdenum-containing waste is difficult to treat, molybdenum pollution transfer is easy to cause, the resource utilization rate is low, and the temperature and dissolved oxygen are the two most critical restriction factors for the operation of the artificial wetland in cold regions; the ion exchange method can effectively reduce the content of molybdenum, but is greatly influenced by pH value, turbidity and the like during treatment, the pH value range needs to be adjusted firstly during treatment, the turbidity in sewage is reduced, and blockage is prevented and treated; the chemical precipitation method has wide application range and low requirement on water quality, can be suitable for high-turbidity water bodies and has strong application prospect, but at present, the pH value of the water body needs to be adjusted to enable the water body to be in strong acidity for treatment. In conclusion, the comparative analysis shows that the method is still suitable for using the chemical precipitation method to treat the heavy metal wastewater when the heavy metal molybdenum wastewater is treated, the treatment effect of the chemical precipitation method for treating the heavy metal wastewater is stable, but the treatment effect is influenced by a plurality of factors, and the traditional precipitation method only can be used in the industrial field due to the harsh pH conditions and the characteristics of the adopted flocculating agent. The sewage is in stronger acidity under the condition of low pH value, and the treatment equipment and the pipeline need to consider strict anticorrosion treatment, thereby not only improving the investment cost, but also increasing the complexity of construction, and also providing higher requirements for the operation and maintenance of production. Meanwhile, the selection of the chemical precipitation method flocculant is also key to the removal effect and the operation cost, and the development of the single flocculant is restricted due to the defects of large dosage, loose flocculation, high operation cost and the like existing in the actual use at present.
SUMMERY OF THE UTILITY MODEL
To the technical problem that above-mentioned exists, the utility model provides a molybdenum ore area contains molybdenum sewage treatment device, multistage coagulating sedimentation method under the faintly acid condition that it adopted has low acidity, reaction time is fast, the treatment cost is low, treatment facility is simple and convenient, treatment effect advantage such as good.
The purpose of the utility model is realized through the following technical scheme:
the utility model relates to a molybdenum ore area contains molybdenum sewage treatment device, including just sinking jar, reaction system, filtration system and sludge drying system, just sink jar, reaction system and filtration system series connection, just sink jar and reaction system's bottom and all connect sludge drying system, sewage order is through just sinking jar, reaction system and filtration system and filtering the back emission.
Preferably, when the content of molybdenum in the sewage is less than 15mg/L, the reaction system is a primary reaction system and two box-type reaction tanks, the primary reaction system comprises a primary reaction sedimentation tank, a pH meter, PFS dosing equipment and acid dosing equipment, the pH meter is arranged on the primary reaction sedimentation tank, the pH value in the primary reaction sedimentation tank is adjusted, the PFS dosing equipment and the acid dosing equipment are both connected with the primary reaction sedimentation tank, polymeric ferric sulfate and hydrochloric acid are added or polymeric ferric sulfate and sulfuric acid are added, the pH value is adjusted to be 4.5-5, and the bottom of the primary reaction sedimentation tank is connected with a sludge drying system pipeline; the caustic soda dosing device is connected to the upper tank body of two box retort, and the tank body of below sets up the pH meter, measures the pH value and controls the caustic soda addition, adjusts the pH value and is 7 ~ 7.5, and the filtration system is connected to the play water of two box retort.
Preferably, when the content of molybdenum in the sewage is more than 15mg/L and less than 30mg/L, a reaction system adopts a primary reaction system to connect a secondary reaction system and two box-type reaction tanks in series, the primary reaction system comprises a primary reaction sedimentation tank, a pH meter, PFS (pulse frequency modulation) dosing equipment and acid dosing equipment, the pH meter is arranged on the primary reaction sedimentation tank, the pH value in the primary reaction sedimentation tank is adjusted, the PFS dosing equipment and the acid dosing equipment are both connected with the primary reaction sedimentation tank, and polymeric ferric sulfate, hydrochloric acid or sulfuric acid is added to adjust the pH value to 4.5-5; the secondary reaction system comprises a secondary reaction sedimentation tank, a pH meter, PFS dosing equipment and alkali dosing equipment, wherein the pH meter is arranged on the secondary reaction sedimentation tank, the pH value in the secondary reaction sedimentation tank is adjusted, the PFS dosing equipment and the alkali dosing equipment are both connected with the secondary reaction sedimentation tank, polymeric ferric sulfate and caustic soda are added, and the pH is adjusted to 4.5-5; the bottoms of the first-stage reaction sedimentation tank and the second-stage reaction sedimentation tank are both connected with a sludge drying system pipeline; the caustic soda dosing device is connected to the upper tank body of the two box-type reaction tanks, the pH meter is arranged on the lower tank body, the pH value is adjusted to be 7-7.5, and the water outlet of the two box-type reaction tanks is connected with the filtering system.
Preferably, the filtering system is a quartz sand filter, the water inlet end of the filtering system is connected with the water outlet ends of the two box-type reaction tanks, the water outlet end of the filtering system is connected with a clean water tank, and the bottoms of the quartz sand filter and the clean water tank 7 are also connected with a back flush valve.
Preferably, the sludge drying system comprises a sludge tank, a screw pump, a sludge reaction tank, a sludge dosing device and a screw stack, wherein the inlet of the sludge tank is respectively connected with the primary sedimentation tank and the reaction sedimentation tank of the reaction system through a sludge pipeline, the outlet of the sludge tank is connected with the screw pump, the screw pump 15 is connected with the sludge reaction tank through a pipeline, the sludge dosing device is communicated with the sludge reaction tank, Polyacrylamide (PAM) is put in the sludge reaction tank, the outlet end of the sludge reaction tank is connected with the screw stack, and dry sludge is discharged through the screw stack.
Preferably, the sewage discharge pipelines of the primary sedimentation tank and the reaction sedimentation tank of the reaction system are both provided with sludge pumps.
Preferably, an adjusting tank is arranged between the primary sedimentation tank and the primary reaction sedimentation tank, and water outlet pipelines of the adjusting tank and the two box-type reaction tanks are respectively provided with a pressure water pump.
The utility model has the advantages that:
1. through the utility model discloses a technique method handles molybdenum-containing sewage, adopts multistage coagulating sedimentation method under the faintly acid condition, adjusts through each reaction part pH value, addition medicament volume and acid-base, through the precipitation that the molybdic acid radical ion reaction in medicament and the sewage formed, handles the dry mud of discharge through sludge drying system, and the processing procedure has low acidity, reaction time is fast, the treatment cost is low, treatment facility is simple and convenient, treatment effect advantage such as good.
2. The utility model discloses a treatment facility is through just sinking, reaction system, the multistage sedimentation treatment of filtration system machine sludge drying system cooperatees, and the water that the discharge meets emission standard and dry mud. Simple structure and good treatment effect.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the system comprises a primary sedimentation tank, 2 an adjusting tank, 3 a reaction sedimentation tank, 4 a reaction sedimentation tank, 5 two box type reaction tanks, 6 a quartz sand filter, 7 a clear water tank, 8 a sludge tank, 9 PFS dosing equipment, 10 acid dosing equipment, 11 alkali dosing equipment, 12 a pressure water pump, 13 a back flush water pump, 14 a sludge pump, 15 a screw pump, 16 sludge dosing equipment, 17 a stack screw and 18 a sludge reaction tank.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and examples.
Example 1: as shown in figure 1, the utility model relates to a molybdenum ore area contains molybdenum sewage treatment device is including just sinking jar 1, reaction system, filtration system and sludge drying system, just sink jar 1, reaction system and filtration system series connection, just sink jar 1 and reaction system's bottom and all connect sludge drying system, sewage is in proper order through just sinking jar 1, reaction system and filtration system and filtering back emission.
When the content of molybdenum in the sewage is less than 15mg/L, the reaction system is a primary reaction system and two box-type reaction tanks, the sewage is precipitated by a precipitation tank 1 and then enters a filtering system through the primary reaction system and the two box-type reaction tanks 5, wherein polymeric ferric sulfate is added into a primary precipitation tank 31 of the primary reaction system to be 70-150 mg/L, hydrochloric acid or sulfuric acid is added, and the pH value is adjusted to be 4.5-5; caustic soda is added into the upper tank body of the two-tank reaction tank 5, a pH meter is arranged on the lower tank body, the pH value is measured, the addition amount of the caustic soda is controlled, and the pH value is adjusted to be 7-7.5, so that the molybdenum content of the effluent is less than or equal to 1.5 mg/L.
The primary reaction system comprises a primary reaction sedimentation tank 31, a pH meter, PFS dosing equipment and acid dosing equipment, wherein the pH meter is arranged on the primary reaction sedimentation tank 31, the pH value in the primary reaction sedimentation tank 31 is adjusted, the PFS dosing equipment and the acid dosing equipment are both connected with the primary reaction sedimentation tank 31, PFS 70-150 mg/L is added, hydrochloric acid or sulfuric acid is added, the pH value is adjusted to be 4.5-5, and the bottom of the primary reaction sedimentation tank 31 is connected with a sludge drying system pipeline; the caustic soda dosing device is connected to the upper tank body of two box retort, and the tank body of below sets up the pH meter, measures the pH value and controls the caustic soda addition, adjusts the pH value and is 7 ~ 7.5, and the filtration system is connected to the play water of two box retort.
The filtering system is a quartz sand filter 6, the water inlet end of the filtering system is connected with the water outlet ends of the two box-type reaction tanks 5, the water outlet end of the filtering system is connected with a clean water tank 7, and the bottoms of the quartz sand filter 6 and the clean water tank 7 are also connected with a back flush valve 13.
The sludge drying system comprises a sludge tank 8, a screw pump 15, a sludge reaction tank 18, a sludge dosing device 16 and a screw stacking device 17, wherein the inlet of the sludge tank 8 is respectively connected with a primary sedimentation tank 1, a reaction sedimentation tank of a reaction system and two box-type reaction tanks 5 of a filtering system through sludge pipelines, the outlet of the sludge tank 8 is connected with the screw pump 15, the screw pump 15 is connected with the sludge reaction tank 18 through pipelines, the sludge dosing device 16 is communicated with the sludge reaction tank 18, Polyacrylamide (PAM) is put in the sludge reaction tank 18, the outlet end of the sludge reaction tank 18 is connected with the screw stacking device 17, and dry sludge is discharged through the screw stacking device 17.
In this embodiment, the water outlet pipelines of the adjusting tank 2 and the two box-type reaction tanks 5 are both provided with a pressurized water pump 12.
The primary sedimentation tank 1, the primary reaction sedimentation tank 31, the secondary reaction sedimentation tank 32, the two-box type reaction tank 5, the sludge tank 8 and the sludge reaction tank 18 are existing nonstandard equipment, and different size parameters are designed according to actual user requirements. The pH meter, the PFS dosing equipment 9, the acid dosing equipment 10, the alkali dosing equipment 11, the screw pump 15, the sludge dosing equipment 16 and the overlapped screw 17 are all standard outsourcing equipment.
The molybdenum-containing sewage treatment method in the molybdenum ore region comprises the following steps:
(1) primary precipitation: the molybdenum-containing sewage enters a primary settling tank 1, stays for 40-60min to settle impurities, flows into a sludge pipeline, and the supernatant of the primary settling tank 1 overflows to an adjusting tank 2;
(2) precipitation of a reaction system: the sewage in the adjusting tank 2 is sent into a sedimentation tank of a reaction system through a pressure water pump 12, the pH is adjusted to 4.5-5, 70-150 mg/L of Polymeric Ferric Sulfate (PFS) is added, the precipitation formed by the absorption of molybdate radical ions and the polymeric ferric sulfate in the water flows into a sludge pipeline, and clear liquid filtered by the sedimentation tank of the reaction system overflows into a two-box type reaction tank 5; adding caustic soda, adjusting the pH of the effluent to 7.5, and then filtering the effluent in a filtering system;
(3) and (3) filtering: after impurities are filtered by a filtering system, the molybdenum content of the effluent is less than or equal to 1.5mg/L and the effluent is discharged.
Example 2: as shown in fig. 1, this example is different from embodiment 1 in that: the molybdenum content in the sewage is more than 15mg/L and less than 30mg/L, a first-stage reaction system is adopted in a reaction system to be connected with a second-stage reaction system and two box-type reaction tanks 5 in series, the sewage is precipitated by a primary precipitation tank and then passes through the first-stage reaction system, the second-stage reaction system and the two box-type reaction tanks 5, PFS is added into the first-stage reaction system to be 70-150 mg/L, hydrochloric acid or sulfuric acid is added, and the pH value is adjusted to be 4.5-5; adding caustic soda into the secondary reaction system, adjusting the pH to 4.5-5, and adding PFS to 30-50 mg/L; caustic soda is added into the upper tank body of the two box type reaction tanks, a pH meter is arranged on the lower tank body, and the pH value is adjusted to 7-7.5, so that the molybdenum content of effluent is less than or equal to 1.5 mg/L.
The primary reaction system comprises a primary reaction sedimentation tank 31, a pH meter, a PFS dosing device 9 and an acid dosing device 10, wherein the pH meter is arranged on the primary reaction sedimentation tank 31, the pH value in the primary reaction sedimentation tank 31 is adjusted, the PFS dosing device 9 and the acid dosing device 10 are both connected with the primary reaction sedimentation tank 31, PFS of 70-150 mg/L is added, hydrochloric acid or sulfuric acid is added, and the pH value is adjusted to 4.5-5; the secondary reaction system comprises a secondary reaction sedimentation tank 32, a pH meter, PFS dosing equipment 9 and alkali dosing equipment 11, wherein the pH meter is arranged on the secondary reaction sedimentation tank 31, the pH value in the secondary reaction sedimentation tank is adjusted, the PFS dosing equipment 9 and the alkali dosing equipment 11 are both connected with the secondary reaction sedimentation tank 32, PFS of 30-50mg/L is added, caustic soda is added, and the pH value is adjusted to 4.5-5; the bottoms of the first-stage reaction sedimentation tank 31 and the second-stage reaction sedimentation tank 32 are both connected with a sludge drying system pipeline. And (4) treating the sludge through a sludge drying system and discharging dry sludge. The caustic soda dosing device is connected to the upper tank body of the two box-type reaction tanks, the pH meter is arranged on the lower tank body, the pH value is adjusted to be 7-7.5, and the water outlet of the two box-type reaction tanks is connected with the filtering system.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (7)
1. The utility model provides a molybdenum sewage treatment device in molybdenum ore region which characterized in that: including sinking jar, reaction system, filtration system and sludge drying system just, sinking jar, reaction system and filtration system series connection just, the sludge drying system is all connected to the bottom of jar and reaction system just sinking, sewage is in proper order through just sinking jar, reaction system and filtration system filtration back discharge.
2. The molybdenum-containing sewage treatment equipment in the molybdenum ore region according to claim 1, characterized in that: when the content of molybdenum in the sewage is less than 15mg/L, the reaction system is a primary reaction system and two box-type reaction tanks, the primary reaction system comprises a primary reaction sedimentation tank, a pH meter, PFS (pulse frequency sequencing batch) dosing equipment and acid dosing equipment, the pH meter is arranged on the primary reaction sedimentation tank, the pH value in the primary reaction sedimentation tank is adjusted, the PFS dosing equipment and the acid dosing equipment are both connected with the primary reaction sedimentation tank, polymeric ferric sulfate and hydrochloric acid are added or polymeric ferric sulfate and sulfuric acid are added, the pH value is adjusted to be 4.5-5, and the bottom of the primary reaction sedimentation tank is connected with a sludge drying system pipeline; the caustic soda dosing device is connected to the upper tank body of two box retort, and the tank body of below sets up the pH meter, measures the pH value and controls the caustic soda addition, adjusts the pH value and is 7 ~ 7.5, and the filtration system is connected to the play water of two box retort.
3. The molybdenum-containing sewage treatment equipment in the molybdenum ore region according to claim 2, characterized in that: when the content of molybdenum in the sewage is more than 15mg/L and less than 30mg/L, a reaction system adopts a primary reaction system to connect a secondary reaction system and two box-type reaction tanks in series, the primary reaction system comprises a primary reaction sedimentation tank, a pH meter, PFS (pulse frequency spinning) dosing equipment and acid dosing equipment, the pH meter is arranged on the primary reaction sedimentation tank, the pH value in the primary reaction sedimentation tank is adjusted, the PFS dosing equipment and the acid dosing equipment are both connected with the primary reaction sedimentation tank, and polymeric ferric sulfate, hydrochloric acid or sulfuric acid is added to adjust the pH value to 4.5-5; the secondary reaction system comprises a secondary reaction sedimentation tank, a pH meter, PFS dosing equipment and alkali dosing equipment, wherein the pH meter is arranged on the secondary reaction sedimentation tank, the pH value in the secondary reaction sedimentation tank is adjusted, the PFS dosing equipment and the alkali dosing equipment are both connected with the secondary reaction sedimentation tank, polymeric ferric sulfate and caustic soda are added, and the pH is adjusted to 4.5-5; the bottoms of the first-stage reaction sedimentation tank and the second-stage reaction sedimentation tank are both connected with a sludge drying system pipeline; the caustic soda dosing device is connected to the upper tank body of the two box-type reaction tanks, the pH meter is arranged on the lower tank body, the pH value is adjusted to be 7-7.5, and the water outlet of the two box-type reaction tanks is connected with the filtering system.
4. The molybdenum-ore region molybdenum-containing sewage treatment facility according to any one of claims 1 to 3, characterized in that: the filtering system is a quartz sand filter, the water inlet end of the filtering system is connected with the water outlet ends of the two box-type reaction tanks, the water outlet end of the filtering system is connected with a clean water tank, and the bottoms of the quartz sand filter and the clean water tank (7) are also connected with a back flush valve.
5. The molybdenum-containing sewage treatment equipment in the molybdenum ore region according to claim 1, characterized in that: the sludge drying system comprises a sludge tank, a screw pump, a sludge reaction tank, a sludge dosing device and a screw pile, wherein an inlet of the sludge tank is respectively connected with a primary sedimentation tank and a reaction system through a sludge pipeline, an outlet of the sludge tank is connected with the screw pump, the screw pump (15) is connected with the sludge reaction tank through a pipeline, the sludge dosing device is communicated with the sludge reaction tank, Polyacrylamide (PAM) is put in the sludge reaction tank, an outlet end of the sludge reaction tank is connected with the screw pile, and dry sludge is discharged through the screw pile.
6. The molybdenum-containing sewage treatment equipment in the molybdenum ore region according to claim 5, characterized in that: sludge pumps are arranged on the sewage discharge pipelines of the reaction sedimentation tank of the primary sedimentation tank and the reaction system.
7. The molybdenum-containing sewage treatment equipment in the molybdenum ore region according to claim 1, characterized in that: an adjusting tank is arranged between the primary sedimentation tank and the primary reaction sedimentation tank, and the adjusting tank and the water outlet pipelines of the two box-type reaction tanks are provided with a pressure water pump.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020402291.8U CN212740950U (en) | 2020-03-26 | 2020-03-26 | Molybdenum-containing sewage treatment equipment in molybdenum ore region |
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| CN202020402291.8U CN212740950U (en) | 2020-03-26 | 2020-03-26 | Molybdenum-containing sewage treatment equipment in molybdenum ore region |
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| CN212740950U true CN212740950U (en) | 2021-03-19 |
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| CN202020402291.8U Active CN212740950U (en) | 2020-03-26 | 2020-03-26 | Molybdenum-containing sewage treatment equipment in molybdenum ore region |
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