Membrane method salt separation resourceful treatment system for high-salinity wastewater in petroleum refining industry
A high-salt wastewater treatment system technology, applied in water softening, water/sewage treatment, natural water treatment, etc., can solve problems such as low recovery rate, and achieve the effect of improving recovery rate, realizing zero discharge and resource utilization
Pending Publication Date: 2021-03-30
北京航天环境工程有限公司
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Problems solved by technology
[0005] For this reason, the present invention provides a membrane-based salt-separation resource treatment system for high-salt wastewater in the petroleum refining industry to solve the problem of low recovery rate caused by the combination of ultrafiltration and reverse osmosis in the prior art
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[0028] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0029] First of all, it needs to be explained that the high-salt wastewater in the petroleum refining industry mentioned in the present invention refers to the concentrated brine produced after oil separation pretreatment and corporate water resource recovery and reuse. In addition to containing a large amount of salt, it also contains organic pollutants. Ammonia nitrogen. The membrane-based sal...
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The invention discloses a membrane-method salt separation resourceful treatment system for high-salinity wastewater in the petroleum refining industry. The system comprises an efficient sedimentationtank, a tubular ultrafiltration system, an ion exchange system, a first-stage reverse osmosis system, an A / O + MBR device, a first-stage nanofiltration system, a second-stage nanofiltration system, asecond-stage reverse osmosis system, a high-valence salt evaporation crystallizer, a low-valence salt evaporation crystallizer and a miscellaneous salt evaporation crystallizer. The system employs thetwo-stage reverse osmosis system, a two-stage nanofiltration system and an A / O + MBR device as main treatment units, and a pretreatment process and an evaporative crystallization technology are combined to form a membrane-method salt separation resourceful treatment process for high-salinity wastewater in the petroleum refining industry, so that the defects that the high-salinity wastewater in the petroleum refining industry is difficult to resist impact of organic matters and poor in salt separation effect and a high-grade industrial-level product is difficult to product can be solved; besides, zero emission and resource utilization of high-salinity wastewater in the petroleum refining industry are achieved, and the recovery rate is increased.
Description
technical field [0001] The invention relates to the technical field of high-salt wastewater treatment, in particular to a membrane-based salt-separation resource treatment system for high-salt wastewater in the petroleum refining industry. Background technique [0002] Petroleum refining wastewater is a type of industrial wastewater that is seriously polluted and difficult to treat in the field of treatment. The wastewater has high salt, high ammonia nitrogen, complex pollutant components, high concentration, and most of them are toxic and harmful organic substances that are biodegradable. Water quality, water quantity characteristic of large fluctuations. Using the conventional industrial wastewater reuse water treatment process, the system recovery rate is low, the effluent water quality cannot meet the standard stably, and sodium sulfate and sodium chloride cannot achieve the effect of separating quality and salt. [0003] In the prior art, the combination of ultrafiltra...
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Patent Timeline
Login to View More IPC IPC(8): C02F9/14C01D3/04C01D5/00C02F103/36C02F101/10C02F101/12
CPCC01D3/04C01D5/00C01D5/16C02F1/048C02F1/42C02F1/441C02F1/442C02F1/444C02F1/5236C02F1/66C02F3/30C02F5/00C02F5/02C02F9/00C02F2001/007C02F2101/101C02F2101/12C02F2103/365C02F2209/08
Inventor 马洁张宏策刘海伦杨涛李刚郝科慧董占江车跃先
Owner 北京航天环境工程有限公司