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CN-224226833-U - Water island type water treatment system of coal-fired power plant

CN224226833UCN 224226833 UCN224226833 UCN 224226833UCN-224226833-U

Abstract

The utility model discloses a water island type water treatment system of a coal-fired power plant, which has the following structure that a water source water treatment module is provided with a first water outlet and a first sludge outlet, a cooling tower is provided with a second water outlet, the first water outlet is connected with the cooling tower, a circulating water treatment module is provided with a water production outlet, a waste water outlet, a concentrated water outlet and a second sludge outlet, the second water outlet is connected with the circulating water treatment module, a desulfurization module is provided with a third water outlet, the concentrated water outlet is connected with the desulfurization module, an industrial waste water treatment module is provided with a third sludge outlet, the waste water outlet is connected with the industrial waste water treatment module, the desulfurization waste water treatment module is provided with a fourth sludge outlet, the third water outlet is connected with the desulfurization waste water treatment module, and the first sludge outlet, the second sludge outlet, the third sludge outlet and the fourth sludge outlet are all connected with the sludge treatment module.

Inventors

  • SHENG LIJIE
  • XU FENG
  • Yao Dunzhou
  • XU YINGXING
  • XU WENPEI
  • ZHANG GUOJUN
  • ZHOU YOUSHENG
  • XIAO JIAYI

Assignees

  • 国能长源汉川发电有限公司

Dates

Publication Date
20260512
Application Date
20250425

Claims (10)

  1. 1. A water island type water treatment system of a coal-fired power plant, comprising: A source water treatment module (1) having a first drain port and a first sludge discharge port; A cooling tower (2) having a second drain opening, the first drain opening being connected to the cooling tower (2); The circulating water treatment module (3) is provided with a water production outlet, a wastewater outlet, a concentrated water outlet and a second sludge outlet, and the second water outlet is connected with the circulating water treatment module (3); the desulfurization module (4) is provided with a third water outlet, and the concentrated water outlet is connected with the desulfurization module (4); An industrial wastewater treatment module (5) having a third sludge discharge port, the wastewater discharge port being connected to the industrial wastewater treatment module (5); a desulfurization waste water treatment module (6) having a fourth sludge discharge port, the third water discharge port being connected to the desulfurization waste water treatment module (6), and The sludge treatment module (7), the first sludge discharge port, the second sludge discharge port, the third sludge discharge port and the fourth sludge discharge port are all connected with the sludge treatment module (7).
  2. 2. The water island type water treatment system of a coal-fired power plant according to claim 1, wherein the source water treatment module (1) comprises a flocculation tank (11) and a sedimentation tank (12), the flocculation tank (11) is connected with the sedimentation tank (12), and the first water outlet and the first sludge outlet are both arranged on the sedimentation tank (12).
  3. 3. The water island type water treatment system of a coal-fired power plant according to claim 1, wherein the circulating water treatment module (3) comprises a high-density tank (31), a multi-medium filter tank (32), an ultrafiltration device (33), a reverse osmosis device (34) and an ion exchange device (35) which are sequentially connected, the second water outlet is communicated with the high-density tank (31), the concentrated water outlet is arranged on the reverse osmosis device (34), the produced water outlet and the wastewater outlet are both arranged on the ion exchange device (35), and the second sludge outlet is arranged on the Gao Michi (31).
  4. 4. A water island type water treatment system of a coal fired power plant according to claim 3, characterized in that the reverse osmosis device (34) is provided in plurality in series and/or in parallel.
  5. 5. The water island type water treatment system of a coal-fired power plant according to claim 4, wherein the circulating water treatment module (3) further comprises a concentrated water collection tank (36), concentrated water outlets of a plurality of reverse osmosis devices (34) are connected with the concentrated water collection tank (36), and the concentrated water collection tank (36) is connected with the desulfurization module (4).
  6. 6. A water island type water treatment system of a coal-fired power plant according to claim 3, wherein the ion exchange device (35) comprises a cation exchange device (35 a), an anion exchange device (35 b) and an anion-cation mixed bed device (35 c) which are sequentially connected in series, the produced water outlet is arranged on the anion-cation mixed bed device (35 c), and the cation exchange device (35 a), the anion exchange device (35 b) and the anion-cation mixed bed device (35 c) are provided with waste water discharge ports.
  7. 7. The water island type water treatment system of a coal-fired power plant according to claim 1, wherein the desulfurization wastewater treatment module (6) comprises a desulfurization triple tank (61), a preliminary sedimentation tank (62), a triple-effect evaporation device (63), a drying device (64) and an ash receiving device (65) which are sequentially connected, the third water outlet is connected with the desulfurization triple tank (61), and the fourth sludge outlet is arranged on the preliminary sedimentation tank (62).
  8. 8. The water island type water treatment system of a coal-fired power plant according to claim 1, characterized in that the industrial wastewater treatment module (5) is an integrated magnetic coagulation device.
  9. 9. The water island type water treatment system of a coal-fired power plant according to claim 1, wherein the sludge treatment module (7) comprises a sludge mixing tank (71) and a dehydrator (73), the sludge mixing tank (71) is connected with the dehydrator (73), and the first sludge discharge port, the second sludge discharge port, the third sludge discharge port and the fourth sludge discharge port are all connected with the sludge mixing tank (71).
  10. 10. The water island type water treatment system of a coal-fired power plant according to claim 9, wherein the sludge treatment module (7) further comprises a sludge concentration tank (72), and the sludge mixing tank (71) is connected with the dehydrator (73) through the sludge concentration tank (72).

Description

Water island type water treatment system of coal-fired power plant Technical Field The utility model belongs to the technical field of water treatment of coal-fired power plants, and particularly relates to a water island type water treatment system of a coal-fired power plant. Background The water consumption of the thermal power plant is large, and the thermal power plant is mainly used for the process links of cooling, ash removal, desulfurization and the like, and the water consumption is correspondingly increased along with the increase of the scale and the generated energy of the thermal power plant. The water quality requirement of the water used in the current thermal power plant is higher, and the water can be used after being treated so as to avoid damage to equipment and environment. The water island type water treatment system realizes the efficient utilization of water resources and the recycling of wastewater through an integrated water treatment scheme. The system generally takes a plurality of links of water source purification, process water treatment, wastewater treatment and recycling, terminal wastewater zero discharge and the like of a power plant as a whole for overall planning and management so as to achieve the aims of saving construction investment and reducing operation cost. Although the water island type water treatment system achieves remarkable effect in the aspect of wastewater circulation treatment, the water island type water treatment system still has the defects that how to recycle wastewater is mostly treated and reused in the aspect of water source water treatment, the source and the quality of the water source water are different and are difficult to directly meet the requirement of stable operation of a power plant, in addition, the water island type water treatment system relates to a plurality of water treatment units and process links, the requirements on coordination and matching among the units are high, the operation effect of the whole system can be influenced if the arrangement of the treatment units is unreasonable, and the zero emission target of the terminal wastewater cannot be realized. Disclosure of utility model In order to solve the technical problems, the utility model aims to provide the water island type water treatment system of the coal-fired power plant, which has the advantages of simple structure, high water treatment efficiency and uniform water production property after treatment. In order to achieve the purpose, the technical scheme of the utility model is as follows, the water island type water treatment system of the coal-fired power plant comprises: the source water treatment module is provided with a first water outlet and a first mud outlet; a cooling tower having a second drain port, the first drain port being connected to the cooling tower; The circulating water treatment module is provided with a water production outlet, a wastewater outlet, a concentrated water outlet and a second mud outlet, and the second water outlet is connected with the circulating water treatment module; The desulfurization module is provided with a third water outlet, and the concentrated water outlet is connected with the desulfurization module; an industrial wastewater treatment module having a third sludge discharge port, the wastewater discharge port being connected to the industrial wastewater treatment module; A desulfurization waste water treatment module having a fourth sludge discharge port, the third sludge discharge port being connected to the desulfurization waste water treatment module, and And the first sludge discharge port, the second sludge discharge port, the third sludge discharge port and the fourth sludge discharge port are connected with the sludge treatment module. The technical scheme has the advantages that the water source water treatment module can be utilized to carry out primary purification treatment on the water source water, then the cooling tower is used to cool the water purified by the water source water treatment module, the cooled water is further purified by the circulating water treatment module and water is produced, the circulating water treatment module can generate concentrated water, wastewater and sludge during operation, the concentrated water is subjected to desulfurization treatment by the desulfurization module, the wastewater is subjected to harmless treatment by the industrial wastewater treatment module, the wastewater treated by the desulfurization module is subjected to harmless treatment by the desulfurization wastewater treatment module, and the sludge produced by the water source water treatment module, the circulating water treatment module, the industrial wastewater treatment module and the desulfurization wastewater treatment module is subjected to harmless treatment by the sludge treatment module. In the above technical scheme, the source water treatment module comprises a flocculation tank and a sed