CN-224212544-U - Industrial pure water preparation system

CN224212544UCN 224212544 UCN224212544 UCN 224212544UCN-224212544-U

Abstract

The utility model provides a preparation system of industrial pure water, which belongs to the technical field of pure water preparation and comprises a raw water tank, a raw water pump, a pretreatment module, a permeation desalination module, an EDI machine and a pure water tank which are sequentially connected, wherein the permeation desalination module comprises an FO membrane component, a drawing liquid circulation system and a reverse osmosis machine, one end of a raw water channel of the FO membrane component is connected with the pretreatment module, the other end of the raw water channel of the FO membrane component is connected with the reverse osmosis machine, the other end of the reverse osmosis machine is connected with the EDI machine, the drawing liquid circulation system is connected with a drawing liquid channel of the FO membrane component, raw water is pre-concentrated through the FO membrane component and the drawing liquid circulation system, the permeation pressure of raw water is reduced, water molecules are easier to permeate RO membranes of the reverse osmosis machine, and the water production rate is improved, and the technical problems that in the prior art, the raw water is desalted only by a reverse osmosis process and the water production rate is low are solved.

Inventors

ZHANG PING
HE WENJUN
ZHANG FUCHENG
HUANG JIANSHU

Assignees

南京长三角绿色发展研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20250520

Claims (10)

1. The industrial pure water preparation system is characterized by comprising a raw water tank, a raw water pump, a pretreatment module, a permeation desalination module, an EDI machine and a pure water tank which are connected in sequence; The osmosis desalination module comprises an FO membrane component, a drawing liquid circulation system and a reverse osmosis machine, wherein one end of a raw water channel of the FO membrane component is connected with the pretreatment module, the other end of the raw water channel of the FO membrane component is connected with the reverse osmosis machine, the other end of the reverse osmosis machine is connected with the EDI machine, and the drawing liquid circulation system is connected with the drawing liquid channel of the FO membrane component.
2. The system for preparing industrial pure water according to claim 1, wherein the pretreatment module comprises a cyclone separator, an electric flocculation device, an ultrafilter, an ultraviolet sterilizer and a buffer water tank which are connected in sequence; The cyclone separator is connected with the raw water tank through the raw water pump, and the buffer water tank is connected with the raw water channel of the FO membrane assembly through the water outlet pipe.
3. The system for preparing industrial pure water according to claim 2, wherein the pretreatment module further comprises an ultrasonic self-cleaning filter, and both ends of the self-cleaning filter are respectively connected with the electric flocculation device and the ultrafilter.
4. The system for preparing industrial pure water according to claim 2, wherein an RO concentrate pipe is arranged between the reverse osmosis machine and the raw water tank, and a first flow control valve and a heat exchanger are sequentially arranged on the RO concentrate pipe along the direction from the reverse osmosis machine to the raw water tank; The hot side inlet of the heat exchanger is connected with the first flow control valve, the hot side outlet of the heat exchanger is connected with the raw water tank, the cold side inlet of the heat exchanger is connected with the raw water tank, and the cold side outlet of the heat exchanger is connected with the raw water pump.
5. The system for preparing industrial pure water according to claim 2, wherein an EDI concentrate pipe is provided between the EDI machine and the buffer tank, and a second flow control valve is provided on the EDI concentrate pipe.
6. The system for preparing industrial pure water according to claim 2, wherein the drawing liquid circulation system comprises a liquid storage tank, an on-line concentration meter and a circulation pump; The liquid storage tank is used for storing drawing liquid, and is provided with a liquid outlet, a liquid inlet and a dosing port, the liquid outlet is connected with the circulating pump, the other end of the circulating pump is connected with the liquid inlet of the drawing liquid channel of the FO membrane module, the liquid outlet of the drawing liquid channel of the FO membrane module is connected with the liquid inlet, and the online concentration meter is arranged in the liquid storage tank and used for detecting the concentration of the drawing liquid in real time.
7. The system for preparing industrial pure water according to claim 6, wherein the liquid storage tank is provided with a heating coil, a steam pipe and a temperature sensor; The heating coil is spirally arranged on the inner wall of the liquid storage tank, the steam pipe is arranged on the top end of the liquid storage tank, and the other end of the steam pipe is spirally wound on the water outlet pipe and is communicated with the raw water tank.
8. The system for producing industrial pure water according to claim 6, wherein the drawing liquid is magnesium chloride.
9. The system for preparing industrial pure water according to claim 1, wherein a pulse water flow generator is provided between the reverse osmosis machine and the EDI machine.
10. The system for preparing industrial pure water according to claim 1, further comprising a control system, wherein the raw water pump, the pretreatment module, the drawing liquid circulation system, the reverse osmosis machine and the EDI machine are electrically connected to the control system.

Description

Industrial pure water preparation system Technical Field The utility model relates to the technical field of pure water preparation, in particular to a preparation system of industrial pure water. Background Pure water is water with extremely high chemical purity, which is used for removing almost all conductive media in water and removing undissociated colloid substances, gases and organic matters in water to a very low degree, and is mainly applied to the fields of biology, chemistry and chemical industry, metallurgy, aerospace, electric power and the like. In the prior art, the preparation of pure water generally takes a reverse osmosis process to carry out desalination treatment on raw water as a core, and a pretreatment process and a post-treatment process are respectively arranged at the upstream and the downstream of the reverse osmosis process, wherein the pretreatment process provides proper water inlet conditions for the reverse osmosis, protects RO membranes from pollution and damage, and the post-treatment process is used for further purifying water quality to obtain pure water with higher purity, but only carries out desalination treatment on the raw water by the reverse osmosis process, so that the water production rate is slow. Disclosure of utility model The embodiment of the application aims to provide a preparation system of industrial pure water, which is used for solving the technical problem that the water production rate is low in the prior art by only desalting raw water by a reverse osmosis process. In order to achieve the above purpose, the embodiment of the present application adopts the following technical scheme: A preparation system of industrial pure water comprises a raw water tank, a raw water pump, a pretreatment module, a permeation desalination module, an EDI machine and a pure water tank which are connected in sequence; The osmosis desalination module comprises an FO membrane component, a drawing liquid circulation system and a reverse osmosis machine, wherein one end of a raw water channel of the FO membrane component is connected with the pretreatment module, the other end of the raw water channel of the FO membrane component is connected with the reverse osmosis machine, the other end of the reverse osmosis machine is connected with the EDI machine, and the drawing liquid circulation system is connected with the drawing liquid channel of the FO membrane component. In the system for preparing industrial pure water according to the embodiment of the application, the pretreatment module comprises a cyclone separator, an electric flocculation device, an ultrafilter, an ultraviolet sterilizer and a buffer water tank which are connected in sequence; The cyclone separator is connected with the raw water tank through the raw water pump, and the buffer water tank is connected with the raw water channel of the FO membrane assembly through the water outlet pipe. In the system for preparing industrial pure water according to the embodiment of the application, the pretreatment module further comprises an ultrasonic self-cleaning filter, and two ends of the self-cleaning filter are respectively connected with the electric flocculation device and the ultrafilter. In the system for preparing industrial pure water, provided by the embodiment of the application, an RO (reverse osmosis) concentrate pipe is arranged between the reverse osmosis machine and the raw water tank, and a first flow control valve and a heat exchanger are sequentially arranged on the RO concentrate pipe along the direction from the reverse osmosis machine to the raw water tank; The hot side inlet of the heat exchanger is connected with the first flow control valve, the hot side outlet of the heat exchanger is connected with the raw water tank, the cold side inlet of the heat exchanger is connected with the raw water tank, and the cold side outlet of the heat exchanger is connected with the raw water pump. In the system for preparing industrial pure water according to the embodiment of the application, an EDI concentrate pipe is arranged between the EDI machine and the buffer water tank, and a second flow control valve is arranged on the EDI concentrate pipe. In the system for preparing industrial pure water according to the embodiment of the application, the drawing liquid circulation system comprises a liquid storage tank, an online concentration meter and a circulating pump; The liquid storage tank is used for storing drawing liquid, and is provided with a liquid outlet, a liquid inlet and a dosing port, the liquid outlet is connected with the circulating pump, the other end of the circulating pump is connected with the liquid inlet of the drawing liquid channel of the FO membrane module, the liquid outlet of the drawing liquid channel of the FO membrane module is connected with the liquid inlet, and the online concentration meter is arranged in the liquid storage tank and used for detecting the concentration of