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Treatment device and method for concentrating salt-containing water by membrane separation method

A technology of membrane separation method and treatment device, which is applied in the field of water treatment, can solve problems such as endangering industrial and agricultural production, affecting the quality of drinking water, and increasing the difficulty of organic wastewater, so as to reduce the amount of evaporated water, ensure long-term stability, and simple structure Effect

Pending Publication Date: 2017-06-20
SHANGHAI LONGKING ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Arbitrary discharge of salty wastewater will not only affect the quality of people's drinking water, but also endanger industrial and agricultural production, increase the difficulty of biological treatment of organic wastewater, etc.

Method used

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  • Treatment device and method for concentrating salt-containing water by membrane separation method
  • Treatment device and method for concentrating salt-containing water by membrane separation method
  • Treatment device and method for concentrating salt-containing water by membrane separation method

Examples

Experimental program
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Effect test

Embodiment 1

[0037] This embodiment discloses a treatment device for reverse osmosis concentrated brine, such as figure 1As shown, the reverse osmosis concentrated brine treatment device in this embodiment includes: a brine raw water tank 1 for storing brine; Dialysis treatment; CaSO 4 The produced water tank 5 communicates with the electrodialysis device 3 and is used to receive the CaSO in the electrodialysis device 3 4 Produced water; NaCl produced water tank 4, communicated with electrodialysis device 3, for receiving NaCl produced water in electrodialysis device 3; evaporation and crystallization device 6, communicated with NaCl produced water tank 4, used for evaporating and crystallizing NaCl produced water; Gypsum cyclone 8, with CaSO 4 The produced water tank 5 is connected to be used for the primary dehydration of gypsum; the vacuum belt dehydrator 9 is connected to the bottom outlet of the gypsum cyclone 8 for further dehydration of gypsum.

[0038] Specifically, the electrod...

Embodiment 2

[0042] Such as figure 2 As shown, this embodiment discloses another specific embodiment of a reverse osmosis concentrated brine treatment device. The reverse osmosis concentration unit comprises: a reverse osmosis device 12 communicated with the NaCl produced water tank 4 for reverse osmosis treatment of the NaCl produced water; a high-pressure pump 11 communicated with the NaCl produced water tank 4 and the reverse osmosis device 12 respectively for The NaCl product water in the NaCl product water tank 4 is transported to the reverse osmosis device 12; the NaCl concentrated water tank 13 communicates with the reverse osmosis device 12 for receiving the NaCl concentrated water in the reverse osmosis device 12.

Embodiment 3

[0044] Such as image 3 As shown, this embodiment discloses another specific embodiment of a reverse osmosis concentrated brine treatment device. Its structure is basically the same as that of Embodiment 2, except that in this embodiment, NaCl concentrated water is added The internal circulation reverse osmosis unit includes a heat exchanger 14, the heat exchanger 14 is arranged between the NaCl concentrated water tank 13 and the NaCl produced water tank 4, and its water inlet is communicated with the NaCl concentrated water tank 13, and its water outlet is connected with the NaCl produced water tank 4 Connected, for cooling the NaCl concentrated water and transporting the cooled NaCl concentrated water to the NaCl produced water tank 4. In this embodiment, the heat exchanger 10 exchanges heat between the cooling water and the concentrated NaCl water, so as to reduce the temperature of the concentrated NaCl water.

[0045] Specifically, the reverse osmosis concentrated brine ...

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Abstract

The invention discloses a treatment device and method for concentrating salt-containing water by a membrane separation method. The treatment device comprises a salt-containing water raw water box, an electroosmosis device, a CaSO4 water producing box, a NaCl water producing box, an evaporative crystallization device, a gypsum whirlcone and a vacuum belt dewaterer, wherein the electroosmosis device communicates with the salt-containing water raw water box; the CaSO4 water producing box communicates with a fresh water chamber of the electroosmosis device and is used for receiving CaSO4 producing water in the electroosmosis device; the NaCl water producing box communicates with a concentrated water chamber of the electroosmosis device; the evaporative crystallization device communicates with the NaCl water producing box and is used for obtaining NaCl crystal salt; the gypsum whirlcone communicates with the CaSO4 water producing box, and is used for gypsum primary dewatering; the vacuum belt dewaterer communicates with a bottom flow outlet of the gypsum whirlcone, and is used for further dewatering gypsum to obtain gypsum. The treatment device for concentrating the salt-containing water by the membrane separation method has the advantages that the structure is simple; the operation of the treatment method is convenient and fast; the treatment device can be used in the concentration reduction process of industrial wastewater / seawater / underground brine / salt lake water containing Na<+>, Ca<2+>-Cl<-> and SO4<2->; meanwhile, the ingredients in the water are recovered and utilized.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a treatment device and method for concentrating brine by a membrane separation method. Background technique [0002] In recent years, as people's demand for water resources continues to increase with the rapid increase in population, the shortage of water resources has become increasingly serious. Moreover, the rapid development of social economy is bound to be accompanied by the generation of a large amount of domestic and industrial waste water. It contains a certain amount of dissolved inorganic salt ions (such as Na + , Ca 2+ -Cl - , SO 4 2- System) wastewater is saline wastewater, when the salt concentration ≥ 1%, we can call it high-salt wastewater. Arbitrary discharge of saline wastewater will not only affect the quality of drinking water, but also endanger industrial and agricultural production, and increase the difficulty of biological treatment of organic wastewater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C01D3/06C01F11/46C02F101/10C02F101/12
CPCC01D3/06C01F11/46C02F9/00C02F2001/425C02F2101/12C02F2101/10C02F2101/101C02F2301/08C02F1/04C02F1/58C02F1/441C02F1/4693
Inventor 陈泽民何永胜任世中陈天光李静张朦方巧
Owner SHANGHAI LONGKING ENVIRONMENTAL PROTECTION