CN215102532U - Mine high-iron manganese acid wastewater treatment device - Google Patents
Mine high-iron manganese acid wastewater treatment device Download PDFInfo
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- CN215102532U CN215102532U CN202121623077.6U CN202121623077U CN215102532U CN 215102532 U CN215102532 U CN 215102532U CN 202121623077 U CN202121623077 U CN 202121623077U CN 215102532 U CN215102532 U CN 215102532U
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Abstract
The utility model belongs to the technical field of sewage treatment, in particular to a mine high-iron manganese acid wastewater treatment device, which comprises a carbide slag dosing tank, a sewage aeration tank, a sludge sedimentation tank and a clean water tank, wherein the carbide slag dosing tank, the sewage aeration tank, the sludge sedimentation tank and the clean water tank are sequentially communicated, a stirrer is arranged in the carbide slag dosing tank, an aeration device is arranged in the sewage aeration tank, and a sludge pump is arranged in the sludge sedimentation tank; the carbide slag dosing tank and the sewage aeration tank are respectively communicated with the water inlet main pipe through water distribution branch pipes. The carbide slag dosing tank, the sewage aeration tank, the sludge sedimentation tank and the clean water tank are communicated in sequence, the structure is reasonable, and the continuity of the treatment process can be ensured; the carbide slag dispensing tank and the sewage aeration tank are communicated with the water inlet main pipe through the water distribution branch pipes respectively, so that waste water can be divided, one part of the waste water is used for dispensing, and the other part of the waste water is used for treating waste water.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, concretely relates to mine high-iron manganese acid wastewater treatment device.
Background
The annual output of coal in China is at the top of the world, the coal accounts for more than 70% of the energy structure in China, and the proportion does not change greatly in the coming years. However, in the coal mining and utilizing process, a large amount of high-iron manganese acid wastewater is discharged, the pH value is less than 7, the water body is yellow, the iron ion content is 100-400 mg/L, the manganese ion content is 10-35 mg/L, and the sulfate is high. If the waste water is not treated and is directly discharged, the environment is inevitably polluted. China is a big water-deficient country, the distribution of water resources is extremely unbalanced, water resources of a wide area in northern Huaihai account for only 19 percent of the whole country, and coal resources account for 75 percent of the total amount of the whole country, so that the pattern of rich coal and poor water in northern areas is formed. According to statistics, 40% of coal mines in China are seriously lack of water, and production and development of coal enterprises are already restricted. Therefore, in order to enhance coal mining and reasonably utilize water resources, a treatment method of the mine high-iron manganese acid wastewater needs to be further improved, so that the wastewater can be recycled, and the sustainable development of the coal industry is promoted.
In the technical field of sewage treatment equipment, the existing treatment method for mine high-iron manganese acid wastewater is realized by a process method of sodium hydroxide (NaOH), aeration, polyaluminium chloride (PAC) and Polyacrylamide (PAM). The process flow is complicated, the purchase cost of various chemical agents is high, the acid-base neutralization treatment reaction time is long, the operation cost of the whole wastewater treatment process is high, the manpower and material resources are consumed, and the operation cost is increased.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides a mine high-iron manganese acid effluent treatment plant can reduce the waste water treatment cost, shortens neutralization treatment reaction time.
In order to solve the technical problem, the utility model discloses a technical scheme be:
a mine high-iron manganese acid wastewater treatment device comprises a carbide slag dosing tank, a sewage aeration tank, a sludge sedimentation tank and a clean water tank, wherein the carbide slag dosing tank, the sewage aeration tank, the sludge sedimentation tank and the clean water tank are sequentially communicated, a stirrer is arranged in the carbide slag dosing tank, an aeration device is arranged in the sewage aeration tank, and a sludge pump is arranged in the sludge sedimentation tank; the carbide slag dosing tank and the sewage aeration tank are respectively communicated with the water inlet main pipe through water distribution branch pipes.
A short-flow prevention plate is fixed in the carbide slag dispensing pool, and the bottom of the short-flow prevention plate is provided with a through hole or is spaced from the bottom of the carbide slag dispensing pool;
a liquid discharge tank is formed between the short-flow prevention plate and the carbide slag dosing tank, the sewage aeration tank is communicated with the liquid discharge tank, and a corresponding medicine feeding pipe or a corresponding medicine feeding port is arranged at the liquid discharge tank;
the liquid medicine in the carbide slag dispensing pool enters the liquid discharge tank through the bottom of the short-flow prevention plate, and the liquid medicine in the liquid discharge tank enters the sewage aeration pool through the medicine feeding pipe or the medicine feeding port.
The medicine feeding pipe or the medicine feeding opening is arranged on the wall of the carbide slag dosing pool from the bottom 1/3-1/2.
A submersible stirrer is arranged in the sewage aeration tank; the sewage aeration tank is communicated with the sludge sedimentation tank through a flow passing pipe.
The upper part in the sludge settling tank is provided with an overflow weir, the overflow weir is communicated with the clean water tank through the overflow weir, and the overflow weir is communicated with the clean water tank through a clean water pipe.
Still include the sludge impoundment, sludge pump and sludge impoundment intercommunication can discharge into the sludge impoundment with the mud of deposiing in the sludge sedimentation tank.
The carbide slag dosing tank, the sewage aeration tank, the sludge sedimentation tank and the clean water tank are formed by a tank body and partitions in the tank body.
A method for treating mine high-iron manganese acidic wastewater comprises the following steps:
s1, shunting the high-iron manganese acid wastewater, and respectively discharging the wastewater into the carbide slag dosing tank and the sewage aeration tank;
s2, adding the prepared carbide slag into the carbide slag dispensing pool, stirring by a stirrer to obtain a medicament;
s3, discharging the medicament obtained in the step S2 into a sewage aeration tank, starting an aeration device for aeration, and neutralizing the wastewater by the medicament;
s4, discharging the neutralized wastewater of S3 into a sludge sedimentation tank for flocculation sedimentation so as to separate clear water from sludge;
and S5, respectively discharging the separated clear water and sludge.
In the S1, 10-20% of the high-iron manganese acid wastewater enters a carbide slag dispensing pool for dispensing; 80 to 90 percent of the high ferro-manganese acid wastewater enters a sewage aeration tank for wastewater treatment.
And in the S4, adding polyacrylamide into the sludge sedimentation tank to adsorb fine suspended particles in the wastewater, and performing secondary flocculation.
Compared with the prior art, the utility model, the beneficial effect who has is:
the carbide slag dosing tank, the sewage aeration tank, the sludge sedimentation tank and the clean water tank are communicated in sequence, the structure is reasonable, and the continuity of the treatment process can be ensured; the carbide slag dispensing tank and the sewage aeration tank are communicated with the water inlet main pipe through the water distribution branch pipes respectively, so that waste water can be divided, one part of the waste water is used for dispensing, and the other part of the waste water is used for treating waste water.
A stirrer is arranged in the carbide slag dispensing tank, so that the carbide slag and the wastewater can be fully stirred; be equipped with aeration equipment in the sewage aeration tank, let waste water and atmosphere strong contact through the aeration, after the iron and manganese ion in the abundant oxidation and separation waste water, the carbide slag medicament begins to take place neutralization reaction with waste water, adjusts the pH valve of quality of water, and the iron and manganese ion in the strong absorption waste water, the sulphate in the waste water also takes place chemical reaction with the calcium ion in the carbide slag medicament simultaneously, generates calcium sulfate, makes mud impurity have good flocculation and precipitation nature.
The waste residue, namely carbide slag, left in acetylene production in chemical enterprises is utilized to treat high-iron manganese acid wastewater discharged in the coal mining process, and two chemical agents, namely sodium hydroxide (NaOH) and polyaluminium chloride (PAC), are replaced.
The carbide slag is calcium hydroxide (Ca (OH)2) The waste residue as the main component is a good flocculating agent and a good coagulant aid; not only can calcium ions be introduced to perform chemical reaction with sulfate in the wastewater to remove the sulfate and generate precipitate, but also can iron and manganese ions in the wastewater be efficiently adsorbed; not only can improve the precipitation of the sludge, but also can improve the clarity of water quality. The novel method for treating the high-iron manganese acid wastewater in the mine is realized by an integral steel device, the attack effect of two chemical agents is combined into one, the whole process flow is simplified, the acid-base neutralization treatment is rapid, the purchase cost of the chemical agents is reduced, the operation cost of the whole process is reduced, the qualified discharge standard is reached, the treatment effect is good, and the method can be used for mining various large-scale coal mines, thereby promoting the sustainable development of the coal industry.
Drawings
Fig. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
wherein: 1 is the main pipe of intaking, 2 is first lateral branch, 3 is second lateral branch, 4 is carbide slag dispensing tank, 5 is the mixer, 6 is the medicine conveying pipe, 7 is aeration equipment, 8 is sewage aeration tank, 9 is the overflow pipe, 10 is sludge settling tank, 11 is the sludge pump, 12 is the clean water pipe, 13 is the clean water basin, 14 is the sludge impoundment, 15 is for preventing short-term flow board, 16 is the overflow weir, 17 is the dive agitator, 18 is the shunt valve, 19 is the flowmeter that divides water.
Detailed Description
The technical solutions in the embodiments of the present invention are described below clearly and completely, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the device for treating the high-iron manganese acid wastewater in the mine comprises a carbide slag dosing tank 4, a sewage aeration tank 8, a sludge sedimentation tank 10 and a clean water tank 13, wherein the carbide slag dosing tank 4, the sewage aeration tank 8, the sludge sedimentation tank 10 and the clean water tank 13 are sequentially communicated, liquid medicine in the carbide slag dosing tank 4 can be discharged into the sewage aeration tank 8, neutralized water in the sewage aeration tank 8 can flow into the sludge sedimentation tank 10, and clean water in the sludge sedimentation tank 10 can flow into the clean water tank 13.
A stirrer 5 is arranged in the carbide slag dosing tank 4, an aeration device 7 is arranged in the sewage aeration tank 8, and a sludge pump 11 is arranged in the sludge sedimentation tank 10; the device also comprises a main water inlet pipe 1, and the carbide slag dosing tank 4 and the sewage aeration tank 8 are respectively communicated with the main water inlet pipe 1 through branch water pipes.
The stirring machine 5 and the aeration device 7 adopt common structures in the prior art, the stirring machine 5 mainly comprises a motor and a stirring shaft, the stirring shaft is connected with an output shaft of the motor, and the stirring shaft is driven to rotate through the motor so as to realize stirring. Specifically, the method comprises the following steps: the motor shell in the stirrer 5 is fixed with the tank body of the carbide slag dosing tank 4 and is positioned above the carbide slag dosing tank 4, and the stirring shaft is positioned in the carbide slag dosing tank 4.
The aeration device 7 may be a blower aeration device, a surface aeration device, a submerged jet aeration device, a submerged aeration device, etc., which are well known to those skilled in the art, and the blower aeration device is mainly a blower with certain air volume and pressure, and uses a connecting conveying pipeline to force air into the sewage tank through a microporous air diffusion disc (or a microporous air diffusion pipe) so as to make the sewage in the tank fully contact with the air. Specifically, the method comprises the following steps: the blower is arranged outside the sewage aeration tank 8, and the conveying pipeline and the microporous air diffusion disc are positioned in the sewage aeration tank 8.
For convenience of description, the branch water pipes are named separately: a first branch water diversion pipe 2 is communicated with the carbide slag dosing tank 4, and a second branch water diversion pipe 3 is communicated with the sewage aeration tank 8.
When in use, the high-iron manganese acid wastewater led out from a mine is divided into two branches, wherein the wastewater branched from the water inlet main pipe 1 by the first water-dividing branch pipe 2 enters the carbide slag dispensing pool 4 for dispensing; the wastewater branched from the main water inlet pipe 1 by the second branch water pipes 3 enters a sewage aeration tank 8 for wastewater treatment.
When the first water diversion branch pipe 2 introduces the waste water into the carbide slag dosing tank 4, the prepared carbide slag is added, the stirrer 5 is started to mix the carbide slag, the carbide slag becomes strongly alkaline carbide slag medicament after meeting water, and the carbide slag is uniformly stirred and then sent into the sewage aeration tank 8.
Aeration equipment 7 in sewage aeration tank 8 starts, let waste water and atmosphere strong contact through the aeration, after the iron and manganese ion in the abundant oxidation and separation waste water, the carbide slag medicament begins to take place neutralization reaction with waste water, adjust the pH valve of quality of water, the iron and manganese ion in the strong absorption waste water, the chemical reaction also takes place for the sulfate in the waste water and the calcium ion in the carbide slag medicament simultaneously, generate calcium sulfate, make mud impurity have good flocculation and precipitation nature.
The wastewater neutralized by the carbide slag medicament is sent into a sludge sedimentation tank 10 to start flocculation sedimentation; meanwhile, a proper amount of Polyacrylamide (PAM) medicament can be added to adsorb fine suspended particles in the wastewater, secondary flocculation is carried out, so that the fine suspended particles form larger floccules, the sedimentation speed is accelerated, and clear water and sludge are naturally separated after a certain time.
Sludge deposited below the sludge sedimentation tank 10 is pumped out by a sludge pump 11 for further treatment; and the clear water which is qualified to meet the emission standard is sent into a clear water tank 13 for recycling.
Furthermore, a shunt valve and a shunt flowmeter are arranged on the two shunt branch pipes, namely the shunt valve and the shunt flowmeter are arranged on the first shunt branch pipe 2, and the shunt valve and the shunt flowmeter are also arranged on the second shunt branch pipe 3; the flow rates of the carbide slag dosing tank 4 and the sewage aeration tank 8 can be controlled by arranging a shunt valve and a shunt flowmeter, and the proportion control is carried out.
Further, a short-flow prevention plate 15 is fixed in the carbide slag dosing tank 4, and the bottom of the short-flow prevention plate 15 is provided with a through hole or is spaced from the bottom of the carbide slag dosing tank 4;
a liquid discharge groove is formed between the short-flow prevention plate 15 and the carbide slag dosing tank 4, the sewage aeration tank 8 is communicated with the liquid discharge groove, and a corresponding medicine feeding pipe or a corresponding medicine feeding port is arranged at the liquid discharge groove;
the liquid medicine in the carbide slag dosing tank 4 enters a liquid discharge tank through the bottom of the short-flow prevention plate 15, and the liquid medicine in the liquid discharge tank enters the sewage aeration tank 8 through a medicine feeding pipe or a medicine feeding port.
Through the structure, the liquid medicine in the liquid discharge tank can be fully dissolved into the liquid medicine with the concentration reaching the standard, and when the carbide slag dosing tank 4 is directly communicated with the sewage aeration tank 8, the liquid medicine which is not fully stirred at the upper part is directly discharged into the sewage aeration tank 8.
Furthermore, the position of the medicine feeding pipe 6 or the medicine feeding port can be set according to the actual situation, and is preferably arranged on the wall of the carbide slag dispensing pool 4 from the bottom 1/3-1/2.
Further, a submersible stirrer 17 is arranged in the sewage aeration tank 8, and the sewage aeration tank 8 is communicated with the sludge sedimentation tank 10 through a flow passing pipe 9. The provision of the submersible mixer 17 improves the neutralization effect and efficiency.
Furthermore, the overflow pipe 9 is a bent pipe, and the lower end of the bent pipe is 1/3 away from the bottom of the sludge sedimentation tank 10.
Further, an overflow weir 16 is arranged at the upper part in the sludge sedimentation tank 10 and is communicated with the clean water tank 13 through the overflow weir 16, and the overflow weir 16 is communicated with the clean water tank 13 through a clean water pipe 12.
Of course, the sludge settling tank 10 may be in direct communication with the clean water tank 13, but may result in insufficiently settled sewage being discharged into the clean water tank 13; therefore, the overflow weir 16 is arranged at the upper part of the sludge settling tank 10, so that the clean water at the upper part of the sludge settling tank 10 overflows into the overflow weir 16 and then is discharged into the clean water tank 13, thereby overcoming the defects existing in the direct communication.
Further, the overflow weir 16 can be set according to practical situations, specifically: the distance between the weir crest of the weir and the 10 tank crest of the sludge sedimentation tank is 300-600 mm.
Further, the number of the medicine feeding pipes (or medicine feeding ports) 6, the overflow pipes 9 and the clear water pipes can be set according to actual conditions; preferably: the medicine feeding pipe (or the medicine feeding opening) 6 is provided with two or more, the overflowing pipe 9 is provided with eight, and the clear water pipe 12 is provided with three.
Further, in order to collect the sludge, a sludge tank 14 is further arranged, the sludge pump 11 is communicated with the sludge tank 14, and the sludge precipitated in the sludge sedimentation tank 10 can be discharged into the sludge tank 14.
Further, the carbide slag dosing tank 4, the sewage aeration tank 8, the sludge settling tank 10, and the clean water tank 13 may be integrated, that is, formed by one tank body, and a partition is provided in the tank body, and each of the independent spaces (that is, the carbide slag dosing tank 4, the sewage aeration tank 8, the sludge settling tank 10, and the clean water tank 13) is formed by partitioning.
When a sludge tank 14 is also arranged, the carbide slag dosing tank 4, the sewage aeration tank 8, the sludge sedimentation tank 10, the clean water tank 13 and the sludge tank 14 are integrated and are also formed by the tank body and the partition in the tank body.
A method for treating mine high-iron manganese acidic wastewater comprises the following steps:
s1, shunting the high-iron manganese acid wastewater, and respectively discharging the wastewater into the carbide slag dosing tank and the sewage aeration tank;
s2, adding the prepared carbide slag into the carbide slag dispensing pool, stirring by a stirrer to obtain a medicament;
s3, discharging the medicament obtained in the step S2 into a sewage aeration tank, starting an aeration device for aeration, and neutralizing the wastewater by the medicament;
s4, discharging the neutralized wastewater of S3 into a sludge sedimentation tank for flocculation sedimentation so as to separate clear water from sludge;
and S5, respectively discharging the separated clear water and sludge.
Further, in S1, 10% -20% of the high-iron manganese acid wastewater enters a carbide slag dispensing pool for dispensing; 80 to 90 percent of the high ferro-manganese acid wastewater enters a sewage aeration tank for wastewater treatment.
Further, in S4, polyacrylamide is added into the sludge settling tank to adsorb fine suspended particles in the wastewater, secondary flocculation is carried out to enable the fine suspended particles to form larger flocs, the settling speed is accelerated, and clear water and sludge are naturally separated after a certain time.
Further, in the step S3, the submersible mixer is started to mix, so as to improve the neutralization effect and efficiency.
The above description has been made in detail only for the preferred embodiment of the present invention, but the present invention is not limited to the above embodiment, and various changes can be made without departing from the spirit of the present invention within the knowledge scope of those skilled in the art, and all such changes are intended to be encompassed by the present invention.
Claims (7)
1. The utility model provides a mine high iron manganese acid waste water processing apparatus which characterized in that: the device comprises a carbide slag dosing tank (4), a sewage aeration tank (8), a sludge sedimentation tank (10) and a clean water tank (13), wherein the carbide slag dosing tank (4), the sewage aeration tank (8), the sludge sedimentation tank (10) and the clean water tank (13) are sequentially communicated, a stirrer (5) is arranged in the carbide slag dosing tank (4), an aeration device (7) is arranged in the sewage aeration tank (8), and a sludge pump (11) is arranged in the sludge sedimentation tank (10); the device also comprises a main water inlet pipe (1), and the carbide slag dosing tank (4) and the sewage aeration tank (8) are respectively communicated with the main water inlet pipe (1) through branch water pipes.
2. The mine high-iron manganese acid wastewater treatment device according to claim 1, characterized in that: a short-flow prevention plate (15) is fixed in the carbide slag dosing tank (4), and the bottom of the short-flow prevention plate (15) is provided with a through hole or is spaced from the bottom of the carbide slag dosing tank (4);
a liquid discharge groove is formed between the short-flow prevention plate (15) and the carbide slag dosing tank (4), the sewage aeration tank (8) is communicated with the liquid discharge groove, and a corresponding medicine feeding pipe (6) or a corresponding medicine feeding port is arranged at the liquid discharge groove;
the liquid medicine in the carbide slag dosing tank (4) enters a liquid discharge tank through the bottom of the short-flow prevention plate (15), and the liquid medicine in the liquid discharge tank enters a sewage aeration tank (8) through a medicine feeding pipe (6) or a medicine feeding port.
3. The mine high-iron manganese acid wastewater treatment device according to claim 2, characterized in that: the medicine feeding pipe (6) or the medicine feeding opening is arranged on the wall of the carbide slag dosing tank (4) away from the bottom 1/3-1/2.
4. The mine high-iron manganese acid wastewater treatment device according to claim 1, characterized in that: a submersible stirrer (17) is arranged in the sewage aeration tank (8); the sewage aeration tank (8) is communicated with the sludge sedimentation tank (10) through a flow pipe (9).
5. The mine high-iron manganese acid wastewater treatment device according to claim 1, characterized in that: an overflow weir (16) is arranged at the upper part in the sludge sedimentation tank (10) and is communicated with the clean water tank (13) through the overflow weir (16), and the overflow weir (16) is communicated with the clean water tank (13) through a clean water pipe (12).
6. The mine high-iron manganese acid wastewater treatment device according to claim 1, characterized in that: the sludge treatment device also comprises a sludge tank (14), wherein the sludge pump (11) is communicated with the sludge tank (14) and can discharge sludge precipitated in the sludge sedimentation tank (10) into the sludge tank (14).
7. The mine high-iron manganese acid wastewater treatment device according to claim 1, characterized in that: the carbide slag dosing tank (4), the sewage aeration tank (8), the sludge sedimentation tank (10) and the clean water tank (13) are formed by a tank body and partition partitions in the tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121623077.6U CN215102532U (en) | 2021-07-16 | 2021-07-16 | Mine high-iron manganese acid wastewater treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121623077.6U CN215102532U (en) | 2021-07-16 | 2021-07-16 | Mine high-iron manganese acid wastewater treatment device |
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| Publication Number | Publication Date |
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| CN215102532U true CN215102532U (en) | 2021-12-10 |
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| CN202121623077.6U Active CN215102532U (en) | 2021-07-16 | 2021-07-16 | Mine high-iron manganese acid wastewater treatment device |
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Effective date of registration: 20230404 Address after: 045000 Huatong building, No. 188, nandaxi street, Yangquan City, Shanxi Province Patentee after: Wang Dianxun Address before: 045000 Huatong building, No. 188, nandaxi street, Yangquan City, Shanxi Province Patentee before: SHANXI HUATONG LANTIAN ENVIRONMENTAL PROTECTION Co.,Ltd. |