US 12,030,801 B2
Saline wastewater treatment system using solar-assisted heat pump
Dongxu Wu, Nanjing (CN); Xiaosong Zhang, Nanjing (CN); Yuanzhi Gao, Nanjing (CN); and Zhaofeng Dai, Nanjing (CN)
Assigned to SOUTHEAST UNIVERSITY, Nanjing (CN)
Appl. No. 18/264,047
Filed by SOUTHEAST UNIVERSITY, Nanjing (CN)
PCT Filed Jul. 1, 2022, PCT No. PCT/CN2022/103279
§ 371(c)(1), (2) Date Aug. 2, 2023,
PCT Pub. No. WO2023/284566, PCT Pub. Date Jan. 19, 2023.
Claims priority of application No. 202110793328.3 (CN), filed on Jul. 14, 2021.
Prior Publication US 2024/0083794 A1, Mar. 14, 2024
Int. Cl. C02F 9/00 (2023.01); B01D 1/00 (2006.01); B01D 3/00 (2006.01); C02F 1/00 (2023.01); F24S 20/40 (2018.01); F24S 60/30 (2018.01); F24S 80/30 (2018.01); F25B 27/00 (2006.01); F25B 30/02 (2006.01); C02F 1/14 (2023.01); C02F 3/30 (2023.01)
CPC C02F 9/00 (2013.01) [B01D 1/0035 (2013.01); B01D 3/007 (2013.01); C02F 1/006 (2013.01); F24S 20/40 (2018.05); F24S 60/30 (2018.05); F24S 80/30 (2018.05); F25B 27/005 (2013.01); F25B 30/02 (2013.01); C02F 1/004 (2013.01); C02F 2001/007 (2013.01); C02F 1/14 (2013.01); C02F 3/301 (2013.01); C02F 2201/005 (2013.01); C02F 2303/10 (2013.01); C02F 2303/16 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A saline wastewater treatment system using a solar-assisted heat pump, comprising a wastewater pretreatment system, a wastewater heating system, and a wastewater evaporation and concentration treatment system, wherein the wastewater pretreatment system is connected to the wastewater heating system; and the wastewater heating system is connected to the wastewater evaporation and concentration treatment system;
wherein the wastewater pretreatment system comprises an industrial wastewater pool, a natural settling pool, an activated carbon filter pool, a biodegradation pool, and a saline water storage tank; an outlet of the industrial wastewater pool is connected to an inlet of the natural settling pool through a first pipeline; an outlet of the natural settling pool is connected to an inlet of the activated carbon filter pool through a second pipeline; an outlet of the activated carbon filter pool is connected to an inlet of the biodegradation pool and an inlet of the saline water storage tank respectively through a first pipe group; and an outlet of the saline water storage tank is connected to the inlet of the natural settling pool and the inlet of the activated carbon filter pool respectively through a second pipe group;
wherein the wastewater heating system comprises a solar thermal collector and a heat pump system; the heat pump system comprises a condenser, a throttle valve, an evaporator, and a compressor; an outlet of the compressor is connected to an inlet of the condenser; an outlet of the condenser is connected to an inlet of the throttle valve; an outlet of the throttle valve is connected to an inlet of the evaporator; an outlet of the evaporator is connected to an inlet of the compressor; an outlet of the biodegradation pool is connected to an inlet of the solar thermal collector and the inlet of the condenser respectively through a first three-way valve; an outlet of the solar thermal collector is connected to the inlet of the condenser and the wastewater evaporation and concentration treatment system respectively through a second three-way valve; and the outlet of the condenser is connected to the wastewater evaporation and concentration treatment system;
wherein the wastewater evaporation and concentration treatment system comprises an evaporation and concentration chamber, a heat exchanger, a water storage tank, a brine storage tank, an evaporation wind screen, a first salt storage tank, and a second salt storage tank, wherein
the outlet of the solar thermal collector is connected to the inlet of the condenser and a first inlet of the evaporation and concentration chamber respectively through the second three-way valve; the outlet of the condenser is connected to the first inlet of the evaporation and concentration chamber;
a liquid outlet of the evaporation and concentration chamber is connected to an inlet of the brine storage tank; an outlet of the brine storage tank is connected to an inlet of the evaporation wind screen; an outlet of the evaporation wind screen is connected to an inlet of the first salt storage tank; a first outlet of the evaporation and concentration chamber is connected to a first inlet of the heat exchanger through a fan; a second outlet of the evaporation and concentration chamber is connected to an inlet of the second salt storage tank; a first outlet of the heat exchanger is connected to the water storage tank; a second inlet of the heat exchanger is communicated to the outside; and a second outlet of the heat exchanger is communicated to a second inlet of the evaporation and concentration chamber; wherein the first inlet of the evaporation and concentration chamber is located at a top of the evaporation and concentration chamber, wherein the second inlet of the evaporation and concentration chamber is located at a bottom of the evaporation and concentration chamber.