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CN-224226753-U - Large-scale sea water desalination filtration processing system

CN224226753UCN 224226753 UCN224226753 UCN 224226753UCN-224226753-U

Abstract

The utility model discloses a large seawater desalination and filtration treatment system which comprises a booster pump, a filtration water inlet valve, a high-molecular microporous filter material filter, a filtration water outlet valve and a clear water tank which are sequentially connected, wherein the water outlet of the clear water tank is connected with a seawater reverse osmosis device, a stirrer is arranged in the high-molecular microporous filter material filter, the large seawater desalination and filtration treatment system further comprises a backwash water inlet pipeline, a backwash water inlet valve is arranged in the backwash water inlet pipeline, a backwash sewage pipeline, a lower sewage valve is arranged in the backwash sewage pipeline, a forward flushing sewage pipeline and an upper sewage valve is arranged in the forward flushing sewage pipeline. The scheme has lower running cost, smaller occupied area and better treatment effect, is convenient for back flushing, forward flushing and other processes, and ensures that the system is in a good running state.

Inventors

  • XIE LI
  • CUI LI
  • HU SHUWEN
  • LI HONGJUN

Assignees

  • 中国能源建设股份有限公司
  • 中国电力工程顾问集团华北电力设计院有限公司

Dates

Publication Date
20260512
Application Date
20250506

Claims (6)

  1. 1. The large seawater desalination and filtration treatment system is characterized by comprising a booster pump (1), a filtration water inlet valve (4), a polymer microporous filter material filter (2), a filtration water outlet valve (5) and a clear water tank (3), wherein the booster pump, the filtration water inlet valve (4), the polymer microporous filter material filter (2), the filtration water outlet valve (5) and the clear water tank (3) are sequentially connected along the seawater input-output direction, the clear water tank (3) is provided with a water outlet, and the water outlet of the clear water tank (3) is connected with seawater reverse osmosis equipment; The device also comprises a back flush water inlet pipeline (7), a back flush water inlet valve (8) is arranged in the back flush water inlet pipeline (7), one end of the back flush water inlet pipeline (7) is connected with a pipeline between the booster pump (1) and the filtering water inlet valve (4), and the other end of the back flush water inlet pipeline (7) is connected with a pipeline between the polymer microporous filter material (2) and the filtering water outlet valve (5); the sewage treatment device also comprises a back flush sewage discharge pipeline (9), wherein a lower sewage discharge valve (10) is arranged in the back flush sewage discharge pipeline (9), one end of the back flush sewage discharge pipeline (9) is connected with the input end of the high polymer microporous filter material filter (2), and the other end of the back flush sewage discharge pipeline (9) is a sewage discharge end; The sewage treatment device further comprises a forward flushing sewage treatment pipeline (11), an upper sewage treatment valve (12) is arranged in the forward flushing sewage treatment pipeline (11), one end of the forward flushing sewage treatment pipeline (11) is connected with the output end of the polymer microporous filter material filter (2), and the other end of the forward flushing sewage treatment pipeline (11) is connected with a sewage treatment water outlet end.
  2. 2. The large-scale sea water desalination and filtration treatment system according to claim 1, further comprising a differential pressure transmitter (13) and a turbidity meter (14), wherein the differential pressure transmitter (13) and the turbidity meter (14) are both disposed on the upstream side of the filtered water outlet valve (5).
  3. 3. The large-scale seawater desalination and filtration treatment system according to claim 1, wherein the polymer microporous filter material filter (2) is vertically arranged, the input end of the polymer microporous filter material filter (2) is positioned below, and the output end of the polymer microporous filter material filter (2) is positioned above.
  4. 4. The large-scale seawater desalination and filtration treatment system of claim 1, wherein the filtration water inlet valve (4), the filtration water outlet valve (5), the back flush water inlet valve (8), the lower blowdown valve (10) and the upper blowdown valve (12) are all electric valves or pneumatic valves capable of being automatically controlled by a control system.
  5. 5. The large-scale seawater desalination and filtration treatment system according to claim 1, wherein the upstream side of the sewage outlet end is provided with a section of common sewage pipeline (15) shared by the back flushing sewage pipeline (9) and the forward flushing sewage pipeline (11), and the output sides of the lower sewage valve (10) and the upper sewage valve (12) are connected with the input end of the common sewage pipeline (15).
  6. 6. The large-scale seawater desalination and filtration treatment system according to claim 5, further comprising an equipment emptying pipeline (16), wherein an equipment emptying valve (17) is arranged in the equipment emptying pipeline (16), one end of the equipment emptying pipeline (16) is connected with the input side of the lower blowdown valve (10), and the other end of the equipment emptying pipeline (16) is connected with the blowdown pipeline (15).

Description

Large-scale sea water desalination filtration processing system Technical Field The utility model belongs to the technical field of sea water desalination treatment, and particularly relates to a large sea water desalination and filtration treatment system. Background The current large-scale membrane seawater desalination and filtration treatment process mainly comprises mechanical filtration, adsorption filtration, membrane filtration and the like. The mechanical filtration process is more in types, wherein the ultra-large horizontal pressure filter or V-shaped filter tank is commonly used, the filtration speed is slower, the occupied area is large, and the effluent turbidity cannot meet the seawater reverse osmosis water inlet requirement. The adsorption filtration generally adopts activated carbon as an adsorbent, is mainly used for removing organic matters, residual chlorine and the like, has less suspended matters interception, has high requirement on water quality of inlet water and is easy to crush. The membrane filtration has high investment and running cost, high self-water consumption and needs to consider the influencing factors of water temperature. The conventional filtering and ultrafiltration equipment has strict requirements on the content of the water inlet suspended matters, generally, the water inlet suspended matters of a fine sand filter are smaller than or equal to 5mg/L, the water inlet suspended matters of quartz sand and a double-medium filter are smaller than or equal to 20mg/L, the water inlet turbidity of an activated carbon filter is smaller than or equal to 3NTU, the water inlet turbidity of an internal pressure ultrafiltration membrane is smaller than 5NTU, the front surface is required to be additionally provided with primary filtering, and the influence factors of water temperature are required to be considered. For low turbidity but algae contaminated water conditions, conventional filtration and ultrafiltration equipment cannot be directly adopted, and an air floatation tank is required to be arranged before the water enters the equipment for removing algae. Therefore, the existing treatment process has the problems of high investment and operation cost, high self-water consumption, slower filtering speed, large occupied area, strict requirement on the content of suspended matters in the inlet water, incapability of normal operation after algae blockage and the like. In addition, the filtering processing system also needs to consider the problem of daily maintenance and cleaning so as to ensure that the system is in a good running state. Disclosure of utility model The utility model aims to solve the technical problems of high cost, high self-water consumption, low filtering speed and the like of the existing process, and provides a large seawater desalination and filtration treatment system which has the advantages of lower running cost, smaller occupied area, better treatment effect and convenience in back flushing, forward flushing and the like. According to the technical scheme, the utility model provides a large seawater desalination and filtration treatment system which comprises a booster pump, a filtration water inlet valve, a high-molecular microporous filter material filter, a filtration water outlet valve and a clear water tank, wherein the booster pump, the filtration water inlet valve, the high-molecular microporous filter material filter, the filtration water outlet valve and the clear water tank are sequentially connected along the input and output directions of seawater, the clear water tank is provided with a water outlet, the water outlet of the clear water tank is connected with a seawater reverse osmosis device, a stirrer is arranged in the high-molecular microporous filter material filter, the large seawater desalination and filtration treatment system further comprises a backwash water inlet pipeline, the backwash water inlet pipeline is provided with a backwash water inlet valve, one end of the backwash water inlet pipeline is connected with a pipeline between the booster pump and the filtration water inlet valve, the other end of the backwash water inlet pipeline is connected with a pipeline between the high-molecular microporous filter material filter and the filtration water outlet valve, a backwash sewage draining pipeline is arranged in the backwash sewage draining pipeline, one end of the backwash sewage draining pipeline is provided with a sewage draining end, and the sewage draining pipeline is in the flush sewage draining pipeline, and the sewage draining pipeline is connected with the sewage draining end. In some embodiments, a differential pressure transmitter and a turbidity meter are also included, both of which are disposed on the upstream side of the filtered water outlet valve. In some embodiments, the polymeric microporous filter material filter is vertically disposed, with an input end of the polymeric microporous filter material fi