System and method for recycling strong brine through ultrafiltration and reverse osmosis
An ultrafiltration system and concentrated brine technology, which is applied in the field of waste water treatment to achieve the effects of simple equipment, stable effluent quality, and meeting the needs of production and life.
Pending Publication Date: 2021-12-24
国能朗新明南京环保科技有限公司
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[0005] In order to solve the problem of resource utilization of concentrated brine, the present invention discloses a device and method for resource utilization of concentrated brine using ultrafiltration and reverse osmosis to realize rational utilization of water resources
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[0041] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.
[0042] 1. Introduction of ultrafiltration and reverse osmosis methods
[0043] (1) Introduction of ultrafiltration method
[0044] Ultrafiltration (UF) technology is a membrane separation technology between microfiltration and nanofiltration, with an average pore size of 3-100 nm, and has the functions of purification, separation, and concentration of solutions. Its interception mechanism mainly includes the sieving effect of the membrane and the electrostatic effect. The filter medium is an ultrafiltration membrane. Driven by the pressure difference on both sides, only low molecular weight solutes and water can pass through the ultrafiltration membrane to achieve pur...
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The invention discloses a system and a method for recycling strong brine through ultrafiltration and reverse osmosis. The system comprises a concentrated water tank, a raw water tank, an ultrafiltration system, a cleaning water tank, an ultrafiltration water production tank, a security filter, a reverse osmosis device, a water production tank and a concentrated solution tank. The concentrated water tank enters a raw water tank through a lifting pump, the raw water tank is connected with an ultrafiltration system through a circulating pump, the ultrafiltration system is connected with a cleaning water tank, the cleaning water tank is connected with the ultrafiltration system through a chemical cleaning water pump, the ultrafiltration system is further connected with an ultrafiltration water producing tank, and the ultrafiltration water producing tank is connected with a security filter through a lifting pump; the security filter is connected with the reverse osmosis device through the high-pressure pump, produced water of the reverse osmosis device is connected with the produced water tank, and concentrated water of the reverse osmosis device is connected with the concentrated solution tank. The invention also discloses a method, and discloses a device and a method for resource utilization of strong brine by utilizing ultrafiltration and reverse osmosis, so that reasonable utilization of water resources is realized.
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a system and method for resource utilization of concentrated brine by ultrafiltration and reverse osmosis. Background technique [0002] With the improvement of national environmental protection requirements, the wastewater discharge requirements of thermal power plants are getting higher and higher, and have changed from standard discharge to "zero discharge". The water treatment and desalination technology of thermal power plants is to provide the unit with extremely high-purity desalted water. The full-membrane method is the most commonly used water treatment and desalination technology, and the reuse of concentrated brine is a problem that must be faced. [0003] At present, the full-membrane concentrated brine is mostly used for indirect open circulating water replenishment and wet desulfurization process replenishment. Coastal power plants mostly use seawater ...
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Login to View More IPC IPC(8): C02F1/44
CPCC02F1/444C02F1/441C02F2303/14Y02A20/131
Inventor 陈旭顾小红徐峰赵军王飞
Owner 国能朗新明南京环保科技有限公司