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CN-224212534-U - Sea water desalination equipment

CN224212534UCN 224212534 UCN224212534 UCN 224212534UCN-224212534-U

Abstract

The utility model discloses sea water desalting equipment, and relates to the technical field of sea water desalting. The seawater desalination equipment comprises a pretreatment system and a reverse osmosis system which are sequentially connected through pipelines, wherein the pretreatment system at least comprises a multi-medium filter, an activated carbon filter and a precision filter which are connected in series through pipelines, a filter material layer of the multi-medium filter comprises a quartz sand layer and a manganese sand layer, the filter material layer of the activated carbon filter is a coconut shell activated carbon layer, a filter element of the precision filter is a melt-blown filter element, the reverse osmosis system comprises a high-pressure pump assembly and an RO membrane assembly, the high-pressure pump assembly at least comprises a first high-pressure water pump, a second high-pressure water pump and a third high-pressure water pump which are connected in parallel through pipelines, the RO membrane assembly comprises a plurality of groups of membrane shells which are connected in parallel through pipelines, and a coiled RO membrane element is arranged in each group of membrane shells. The seawater desalination equipment can perform better pretreatment on seawater, and reduce the pollution of the seawater to a subsequent reverse osmosis system.

Inventors

  • RAO MINGHE

Assignees

  • 广东泉威环境科技有限公司

Dates

Publication Date
20260508
Application Date
20250507

Claims (7)

  1. 1. A sea water desalination device is characterized by comprising a pretreatment system and a reverse osmosis system which are sequentially connected through pipelines, wherein the pretreatment system at least comprises a multi-medium filter, an activated carbon filter and a precise filter which are connected in series through pipelines, a filter material layer of the multi-medium filter comprises a quartz sand layer and a manganese sand layer, a filter material layer of the activated carbon filter is a coconut shell activated carbon layer, a filter element of the precise filter is a melt-blown filter element, the reverse osmosis system comprises a high-pressure pump assembly and an RO membrane assembly, the high-pressure pump assembly at least comprises a first high-pressure water pump, a second high-pressure water pump and a third high-pressure water pump which are connected in parallel through pipelines, the RO membrane assembly comprises a plurality of groups of membrane shells which are connected in parallel through pipelines, and a coiled RO membrane element is arranged in each group of membrane shells.
  2. 2. The seawater desalination plant as claimed in claim 1, wherein the quartz sand layer has a particle size of 0.6 to 1.5mm.
  3. 3. The seawater desalination plant as claimed in claim 1, wherein the coconut shell activated carbon layer has an iodine value of 1050mg/g or more.
  4. 4. A seawater desalination plant as claimed in claim 1, wherein the melt-blown filter element has a filtration accuracy of 5. Mu.m.
  5. 5. A seawater desalination plant as claimed in claim 1, wherein a pressure gauge is mounted on the outlet pipeline of the pretreatment system, the pressure gauge being adapted to monitor the outlet pressure of the pretreatment system in real time.
  6. 6. A seawater desalination plant as claimed in claim 1, wherein the inlet end of the membrane housing is provided with a sampling valve for sampling to monitor the quality of the incoming water.
  7. 7. The seawater desalination plant as claimed in claim 1, further comprising a PLC control electric box, a pressure sensor and a conductivity meter, wherein the pressure sensor is arranged on the water outlet pipeline of the high-pressure pump assembly, the water inlet pipeline, the water outlet pipeline and the concentrated water pipeline of the RO membrane assembly, the conductivity meter is arranged on the water inlet pipeline, the water outlet pipeline and the concentrated water pipeline of the RO membrane assembly, and the pressure sensor and the conductivity meter are electrically connected with the PLC control electric box.

Description

Sea water desalination equipment Technical Field The utility model relates to the technical field of sea water desalination, in particular to sea water desalination equipment. Background The seawater desalination is to produce fresh water by utilizing the seawater desalination, the total amount of the fresh water can be increased by the seawater desalination, the fresh water is not influenced by space time and climate, and stable water supply such as drinking water of coastal residents, industrial boiler water supplementing and the like can be ensured. Common sea water desalting methods include distillation and reverse osmosis, which are technologies for desalting sea water by utilizing the characteristics of a semipermeable membrane, which only allows solvent molecules such as water to pass through, but not solute (e.g., salt) molecules, and when separating sea water from fresh water by the semipermeable membrane, if a pressure greater than osmotic pressure is applied to one side of the sea water, water molecules in the sea water are forced to permeate the semipermeable membrane to the fresh water side, and solutes such as salt are trapped to the sea water side, thereby desalting the sea water. However, in the running process of the conventional reverse osmosis seawater desalination equipment, the problems that suspended particles, colloid and other pollutants in the seawater are easy to adsorb on the surfaces of RO membranes (reverse osmosis membranes) of the equipment, so that the RO membranes are polluted and membrane holes are blocked, the seawater desalination effect is affected, the chemical cleaning period of the RO membranes is shortened, the cost is increased, and the service life of the equipment is shortened. Disclosure of utility model The utility model aims to solve the technical problem of providing the seawater desalination equipment which can be used for better pretreatment of seawater and reducing the pollution of the seawater to a subsequent reverse osmosis system. In order to solve the technical problems, the utility model adopts the following technical scheme: The seawater desalination equipment comprises a pretreatment system and a reverse osmosis system which are sequentially connected through pipelines, wherein the pretreatment system at least comprises a multi-medium filter, an activated carbon filter and a precision filter which are connected in series through pipelines, a filter material layer of the multi-medium filter comprises a quartz sand layer and a manganese sand layer, the filter material layer of the activated carbon filter is a coconut shell activated carbon layer, a filter element of the precision filter is a melt-blown filter element, the reverse osmosis system comprises a high-pressure pump assembly and an RO membrane assembly, the high-pressure pump assembly at least comprises a first high-pressure water pump, a second high-pressure water pump and a third high-pressure water pump which are connected in parallel through pipelines, the RO membrane assembly comprises a plurality of groups of membrane shells which are connected in parallel through pipelines, and a coiled RO membrane element is arranged in each group of membrane shells. In some embodiments, the particle size of the quartz sand layer is 0.6 to 1.5mm. In some embodiments, the coconut shell activated carbon layer has an iodine value of 1050mg/g or greater. In some embodiments, the melt blown filter cartridge has a filtration accuracy of 5 μm. In some embodiments, a pressure gauge is installed on the water outlet pipeline of the pretreatment system, and the pressure gauge is used for monitoring the water outlet pressure of the pretreatment system in real time. In some embodiments, the water inlet end of the membrane housing is provided with a sampling valve for sampling to monitor the quality of the incoming water. In some embodiments, the seawater desalination plant further comprises a PLC control electric box, a pressure sensor and a conductivity meter, wherein the pressure sensor is arranged on the water outlet pipeline of the high-pressure pump assembly, the water inlet pipeline, the water outlet pipeline and the concentrated water pipeline of the RO membrane assembly, the conductivity meter is arranged on the water inlet pipeline, the water outlet pipeline and the concentrated water pipeline of the RO membrane assembly, and the pressure sensor and the conductivity meter are electrically connected with the PLC control electric box. Compared with the prior art, the utility model at least realizes the following beneficial effects: The three-stage filtering system of the multi-medium filter, the active carbon filter and the precise filter is used for intercepting pollutants such as suspended particles in the seawater step by step, so that the seawater is well pretreated, the pollution of the seawater to a subsequent reverse osmosis system is reduced, the effluent quality is improved, the chemical cleaning pe