Method for treating printing and dyeing wastewater
A printing and dyeing wastewater and wastewater technology, which is applied in the direction of special treatment targets, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of water that cannot be reused after wastewater treatment, and achieve the effect of recycling
Inactive Publication Date: 2019-11-29
江苏众志新禹环境科技有限公司
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Problems solved by technology
However, the existing traditional treatment methods can only treat wastewater into wastewater that meets the discharge standards, but cannot treat wastewater into reusable water.
Method used
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[0015] Now in conjunction with accompanying drawing, invention is described in further detail. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the invention in a schematic way, so they only show the composition related to the invention.
[0016] figure 1 It is a schematic diagram of the framework of the present invention.
[0017] as attached figure 1 As shown, the printing and dyeing wastewater in the printing and dyeing factory enters the ultrafiltration membrane system, removes most of the turbidity, suspended solids, and COD in the water, and then enters the reverse osmosis membrane system. After passing through the reverse osmosis system, most of the COD and TDS in the wastewater are removed.
[0018] After being filtered by the reverse osmosis membrane system, the waste water becomes reusable water, which enters the finished water tank for reuse or direct discharge. The concentrated water produced by the reverse osmo...
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The invention relates to the technical field of wastewater treatment, in particular to a method for treating printing and dyeing wastewater. The method includes the following steps: a) sending the wastewater to an ultrafiltration membrane system for filtration; b) allowing the wastewater filtered by the ultrafiltration membrane system to flow into a reverse osmosis (RO) membrane system for filtration; c) allowing the wastewater to pass through the reverse osmosis membrane system to obtain reusable water, sending concentrated water produced by filtration of the reverse osmosis membrane system to an over-frequency vibration RO system for concentration; and d) allowing the water filtered by the over-frequency vibration RO system to flow back into the reverse osmosis membrane system for reprocessing, and evaporating concentrated water generated from the over-frequency vibration RO system by an evaporation device. The method removes turbidity, suspended solids and chemical oxygen demand (COD) in the wastewater through the ultrafiltration membrane system, and filters the wastewater through the reverse osmosis membrane system and the over-frequency vibration RO system. The method of the invention can treat printing and dyeing wastewater into reusable water, thereby achieving water recycling.
Description
technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a method for treating printing and dyeing wastewater. Background technique [0002] The existing printing and dyeing wastewater needs to be treated. However, the treatment method of the existing traditional technology can only treat the wastewater into the wastewater that meets the discharge standard, but cannot treat the wastewater into reusable water. Contents of the invention [0003] In order to solve the technical problems described in the background art, the invention provides a method for treating printing and dyeing wastewater, which removes most of the turbidity, suspended solids, and COD in the wastewater through an ultrafiltration membrane system. The wastewater is filtered through the reverse osmosis membrane system and the super frequency vibration RO system. The application can treat printing and dyeing wastewater into reusable water, thereby realiz...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C02F9/10
CPCC02F1/04C02F1/441C02F1/444C02F2201/002C02F2209/08C02F2209/10C02F2209/11C02F2301/046C02F2301/08C02F2303/14
Inventor 陈琪鸿
Owner 江苏众志新禹环境科技有限公司