High-salinity sewage treatment device and method

A sewage treatment device, high salinity technology, applied in the direction of water/sewage treatment, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problem that the waste water from washing smoke and the nanofiltration liquid cannot be collected separately Discharge and incineration plants cannot digest waste water and nanofiltration liquid, etc., to reduce corrosion hazards, reduce concentrations, and ensure smooth operation

CN112723652APending Publication Date: 2021-04-30上海东石塘再生能源有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-04-30

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Abstract

The invention discloses a high-salinity sewage treatment device and method. The high-salinity sewage treatment device comprises a water inlet pipeline and a water outlet pipeline, the end part of the water inlet pipeline communicates with a section of high-salinity reverse osmosis membrane device, the section of high-salinity reverse osmosis membrane device communicates with the water outlet pipeline and is used for discharging filtrate obtained after sewage is subjected to primary high-salt reverse osmosis through the water outlet pipeline, and the section of high-salt reverse osmosis membrane device communicates with a softening device used for softening filtered sludge through a pipeline. The method has the beneficial effects that the smoke washing wastewater and the nanofiltration clear liquid are treated through reverse osmosis of the high-salt membrane, it is ensured that the effluent meets the discharge standard, and the smoke washing wastewater and the nanofiltration clear liquid can be conveniently treated and then directly discharged to the outside through pipes; the amount of smoke washing wastewater and nanofiltration clear liquid which need to be digested is reduced, and stable operation of an incineration plant is guaranteed; and the concentration of chloride ions in the discharged water is reduced, and the corrosion damage of the discharged water to a discharge pipeline is reduced.
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Description

technical field

[0001] The invention relates to the field of high-salt sewage treatment devices, in particular to a high-salt sewage treatment device and method. Background technique

[0002] Incineration is one of the main ways to dispose of waste. In the incineration plant, because the flue gas generated during the incineration process needs to be treated, a large amount of waste water from washing the smoke will be generated in this process. At the same time, in recent years, the membrane bioreactor-based The process has been more and more applied in the leachate treatment of municipal solid waste landfills. In this process, nanofiltration membranes are used to carry out advanced treatment of the effluent of landfill leachate after the membrane bioreactor process. During operation A large amount of nanofiltration liquid will be produced, but the current chloride content of nanofiltration liquid and smoke washing wastewater is 3000-5000mg / l and 14000-20000mg / l, which is mu...

Examples

Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other implementations obtained by persons of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

[0025] see figure 1 As shown, the present invention provides a high-salt sewage treatment device, comprising a water inlet pipe 8 and an outlet pipe 4, the end of the water inlet pipe 8 is connected with a section of high-salt reverse osmosis membrane device 6, and a section of high-salt reverse osmosis membrane device 6 communicates with the outlet pipe 4, and is used to discharge the filtrate obtained after passing the sewage through a high-salt membrane reve...