A countercurrent prmd-pro system and method based on waste heat recovery and desalination
A waste heat recovery and counter-current technology, which is applied in chemical instruments and methods, general water supply conservation, water/sewage multi-stage treatment, etc., can solve the lack of industrial wastewater advanced treatment process, waste water cannot be directly used, and the reuse rate of reclaimed water is low and other problems, to achieve the effect of alleviating membrane fouling, occupying a small area, and saving costs
Active Publication Date: 2021-02-02
SHANDONG UNIV
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Problems solved by technology
As the most commonly used cooling medium, water runs through the entire production process, and eventually collects a large amount of harmful and toxic substances. These waste water cannot be directly used. If they are directly discharged, they will continue to accumulate in the ecological environment, causing damage to the environment and threatening human beings. Survive
However, at present, there is a lack of advanced treatment technology for industrial wastewater in China, and the reuse rate of reclaimed water is low.
Method used
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Embodiment 1
[0061] Such as figure 1 and figure 2 As shown, a countercurrent PRMD-PRO system based on waste heat recovery and desalination includes a raw material liquid pool 1, a cooling liquid pool 10, a pressure-delayed membrane distillation module 4, a pressure-delayed osmosis module 6, a first pressure exchanger 11, Coolant gear pump 12, first turbine 13, filter device 14, drive fluid pool 15, second pressure exchanger 16, drive fluid gear pump 17, second turbine 18, drive fluid recovery device 19, waste water pool 7, MVR membrane Type evaporator 8 and crystallizer 9. The outlet of the coolant pool 10 is connected to the upper inlet of the first pressure exchanger 11; the upper inlet of a pressure exchanger 11 is connected to the inlet of the coolant gear pump 12; the outlets of the raw material pool 1 and the coolant gear pump 12 are respectively connected to the pressure Two inlets on both sides of the delayed membrane distillation assembly 4; the outlet of the cooling liquid of ...
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Abstract
The invention discloses a countercurrent PRMD-PRO system and method based on waste heat recovery and desalination. The system, the PRMD-PRO system includes two processes, a pressure-delayed membrane distillation process and a pressure-delayed osmosis process. The present invention adopts the pressure-delayed membrane distillation process and the pressure-delayed osmosis process to be used together, and the high-temperature and high-salt industrial waste water (COD=2000~6000mg / L, PH=6~9, T=30~80℃) is used as the raw material liquid, through the pressure The low-quality heat energy is extracted by the delayed membrane distillation process, and the salt differential energy is extracted by the pressure-delayed osmosis process. Finally, the energy level can be improved and converted into electric energy, which not only improves the recycling rate of secondary energy, but also reduces environmental pollution.
Description
technical field [0001] The invention belongs to the technical field of secondary energy utilization and water treatment, and relates to a method for recovering low-quality heat energy in industrial wastewater by using membrane technology, in particular to a countercurrent PRMD-PRO system and method based on waste heat recovery and desalination. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Since the reform and opening up, China's industry has developed rapidly, becoming a "world manufacturing center". As the foundation of industrial modernization, the iron and steel industry is one of the pillar industries of our country, but it is also a "big water consumer" and "big p...
Claims
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IPC IPC(8): C02F9/10C02F1/44
CPCC02F1/041C02F1/44C02F1/447C02F2301/066C02F2301/08C02F2303/10C02F2303/14Y02A20/131
Inventor 毛岩鹏曹涵
Owner SHANDONG UNIV