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CN-115710072-B - Hard removing device for mixed salt recovery of coking wastewater evaporation system

CN115710072BCN 115710072 BCN115710072 BCN 115710072BCN-115710072-B

Abstract

The invention discloses a hard removing device for mixed salt recovery of a coking wastewater evaporation system, which relates to the technical field of coking wastewater treatment, in particular to a hard removing device for mixed salt recovery of a coking wastewater evaporation system, comprising a coagulation tank, wherein a baffle plate is fixedly arranged in the coagulation tank, the baffle separates out mixing tank and flocculation tank with the inside of coagulating basin, backup pad one is installed at the top of coagulating basin, the internally mounted of flocculation tank has the charging bucket, the top of charging bucket is provided with driving motor two, driving motor two output shaft's bottom is connected with (mixing) shaft two. This hard device that removes that coking wastewater evaporation system mixed salt was retrieved usefulness utilizes driving motor two to drive into water impeller rotation through setting up the charging bucket, mixes the inside and PAM flocculating agent of charging bucket with waste water suction, and the charging bucket can keep apart the waste water of inside and outside, makes inside PAM flocculating agent be in high concentration state, can improve the effect to calcium magnesium ion flocculation sedimentation.

Inventors

  • SUN LIMIN
  • Tan Changfei
  • XIN SHIJIA
  • OU CHENG

Assignees

  • 江苏鑫林环保设备有限公司

Dates

Publication Date
20260508
Application Date
20221209

Claims (6)

  1. 1. A hard removing device for mixed salt recovery of a coking wastewater evaporation system comprises a coagulation tank (1), and is characterized in that a baffle plate (3) is fixedly arranged in the coagulation tank (1), the interior of the coagulation tank (1) is divided into a mixing tank (4) and a flocculation tank (9) by the baffle plate (3), a first supporting plate (5) is arranged at the top of the coagulation tank (1), a feeding barrel (10) is arranged in the flocculation tank (9), a second driving motor (11) is arranged at the top of the feeding barrel (10), a second stirring shaft (12) is connected to the bottom of an output shaft of the second driving motor (11), a water inlet impeller (13) is connected to the outer part of the second stirring shaft (12), a sedimentation tank (15) is arranged on the right side of the coagulation tank (1), a second supporting plate (16) is arranged at the top of the sedimentation tank (15), a stirring shaft umbrella (17) is movably sleeved in the interior of the second supporting plate (16), a hollow pipe (18) is arranged in the interior of the flocculation tank (9), a first conveying pipe (21) is movably sleeved at the top of the hollow pipe (18), a first conveying pipe (21) is connected to a conveying pump (22) and a first conveying pipe (22) is connected to the inner side of the first conveying pipe (22), the right side of the sedimentation tank (15) is connected with a second conveying pump (26), an output shaft of the second conveying pump (26) is connected with a second conveying pipe (27), one end, far away from the second conveying pump (26), of the second conveying pipe (27) is connected with a filtering tank (28), a porous supporting plate (29) is arranged in the filtering tank (28), filtering resin (30) is arranged at the top of the porous supporting plate (29), a clear water output pipe (31) and a backwashing output pipe (34) are connected to the right side of the filtering tank (28), and a backwashing pipe (32) is connected to the top of the filtering tank (28); The side surface of the feeding barrel (10) is fixed on the inner wall of the flocculation groove (9) through a thin plate, a small hole is formed in the bottom of the feeding barrel (10), and a water inlet is formed in the middle of the feeding barrel (10); the water inlet impeller (13) consists of a plurality of arc plates which are symmetrical in center, and the water inlet impeller (13) is positioned in the water inlet; the bottom of the stirring shaft umbrella (17) is connected with a mud scraping plate (24), and the mud scraping plate (24) is attached to the bottom of the inner cavity of the sedimentation tank (15); clear water output pipe (31) and the headspace intercommunication of filtration resin (30), backwash output pipe (34) and the bottom space intercommunication of porous backup pad (29), the one end that filter tank (28) was kept away from to backwash pipe (32) is connected with water delivery pump (33), the input port of water delivery pump (33) is connected with the water pipe.
  2. 2. The hard removing device for mixed salt recovery of the coking wastewater evaporation system according to claim 1 is characterized in that a water inlet pipe (2) is fixedly connected to the left side of the coagulation tank (1), and the water inlet pipe (2) is communicated with the left side of the mixing tank (4).
  3. 3. The hardness removing device for mixed salt recovery of a coking wastewater evaporation system according to claim 1, wherein a first driving motor (6) positioned above the mixing tank (4) is arranged at the top of the first supporting plate (5), the bottom of an output shaft of the first driving motor (6) is connected with a first stirring shaft (7), and a first stirring blade (8) is sleeved at the bottom of the first stirring shaft (7).
  4. 4. The hardness removing device for mixed salt recovery of a coking wastewater evaporation system according to claim 1, wherein the bottom of the stirring shaft II (12) extends into the feeding barrel (10), and the bottom of the stirring shaft II (12) is sleeved with a stirrer She Er (14).
  5. 5. The hardness removing device for mixed salt recovery of a coking wastewater evaporation system according to claim 1, wherein the top of the stirring shaft umbrella (17) extends to the top of the second supporting plate (16), an umbrella-shaped wheel (19) is fixedly sleeved outside the stirring shaft umbrella (17), a third driving motor (20) is installed at the top of the second supporting plate (16), and an output shaft of the third driving motor (20) is meshed with the umbrella-shaped wheel (19).
  6. 6. The hardness removing device for mixed salt recovery of a coking wastewater evaporation system according to claim 1, wherein an inclined plate (25) is arranged in the sedimentation tank (15), the stirring shaft umbrella (17) penetrates through the inclined plate (25) and stretches into the bottom of the inclined plate (25), the bottom of the hollow pipe (18) is communicated with the distribution pipe (23), and a water leakage port is formed in the bottom of the distribution pipe (23).

Description

Hard removing device for mixed salt recovery of coking wastewater evaporation system Technical Field The invention relates to the technical field of coking wastewater treatment, in particular to a hard removing device for mixed salt recovery of a coking wastewater evaporation system Background In recent years, with the continuous development of heavy industry, the discharge amount of coking wastewater is continuously increased, so that in order to prevent serious threat to ecological environment and protect limited water resources, research on coking wastewater treatment process flows is required, and the coking wastewater is typical toxic organic wastewater difficult to degrade. Mainly from the process water and steam condensate waste water in the coke oven gas primary cooling and coking production process, the concentration of pollutants in the coking waste water is high, and the coking waste water is difficult to degrade, and the existence of nitrogen in the coking waste water causes the surplus nitrogen source required by biological purification, thus bringing great difficulty to the standard of treatment. In order to reduce the consumption of water resources, the coking wastewater needs to be recycled, and in order to ensure the quality of the used water, the water quality of the water source needs to be treated to a certain extent to meet the use requirement of a production device. The hardness of the raw water can have a certain influence on the used units, and although scale inhibiting agents are added into the circulating water system and the reverse osmosis membrane system, the problem of system scaling cannot be avoided, so that under the condition that the hardness of the used water source is higher, the hardness in the water is reduced by adopting a hardness removing technology, and the scaling problem cannot occur in the use process. In the existing hard removing process, lime or sodium hydroxide is mainly used as a hard removing agent, then conventional precipitation and sand filtration are carried out, the removal rate is low, the effluent contains a certain amount of suspended particles, and if the subsequent process is used, precise filtration treatment is also needed, so that the hard removing device for mixed salt recovery of the coking wastewater evaporation system is provided. Disclosure of Invention Aiming at the defects of the prior art, the invention provides a hard removing device for mixed salt recovery of a coking wastewater evaporation system, which solves the problems in the background art. The hard removing device for the mixed salt recovery of the coking wastewater evaporation system comprises a coagulation tank, wherein a baffle is fixedly arranged in the coagulation tank, the interior of the coagulation tank is divided into a mixing tank and a flocculation tank by the baffle, a first supporting plate is arranged at the top of the coagulation tank, a charging barrel is arranged in the flocculation tank, a second driving motor is arranged at the top of the charging barrel, a second stirring shaft is connected to the bottom of a second output shaft of the driving motor, a water inlet impeller is connected to the outer portion of the second stirring shaft, a sedimentation tank is arranged on the right side of the coagulation tank, a second supporting plate is arranged at the top of the sedimentation tank, a stirring shaft umbrella is movably sleeved in the interior of the second supporting plate, a hollow pipe is arranged in the interior of the stirring shaft umbrella, a first conveying pipe is movably sleeved in the top of the hollow pipe, a first conveying pump is connected to the left end of the conveying pipe, an input port of the first conveying pump stretches into the interior of the flocculation tank, a distribution pipe is connected to the side surface of the stirring shaft umbrella, a second output pipe is connected to the right side of the second stirring shaft, a second filtering pump is connected to the right side of the filtering tank, a second filtering tank is connected to the right side of the filtering tank, and a second filtering tank is connected to the top of the filtering tank, and a filtering tank is connected to the top of the filtering tank. Optionally, the left side fixedly connected with inlet tube of coagulating basin, inlet tube and the left side intercommunication of mixing tank are through setting up the inlet tube, and the inlet tube is used for carrying the inside of mixing tank with waste water. Optionally, driving motor one that is located the mixing tank top is installed at the top of backup pad one, the bottom of driving motor one output shaft is connected with the (mixing) shaft one, the bottom cover of (mixing) shaft one is equipped with the (mixing) blade one, drives (mixing) shaft one through driving motor one and rotates, and is driven (mixing) blade one again by the (mixing) shaft and rotate, can mix the inside waste water of mixing tan