Membrane method resourceful treatment device and method for copper smelting high-salinity wastewater
A technology of high-salt wastewater and treatment equipment, which is applied in metallurgical wastewater treatment, multi-stage water treatment, water/sewage treatment, etc., and can solve the problems of wasting water and salt resources, polluting the environment, etc.
Pending Publication Date: 2021-04-27
江苏卓博环保科技有限公司
View PDF2 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The present invention proposes a device and method for recycling high-salt wastewater from copper smelting by membrane method. , more waste of precious water and salt resources
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0053] The copper branch of a non-ferrous metal group Co., Ltd. has an annual output of 200,000 tons of cathode copper and 760,000 tons of sulfuric acid. The copper smelting process adopts "copper concentrate batching-disk granulation-oxygen-enriched top-blown molten pool smelting-intelligent numerical control blowing-rotary anode furnace refining-PC electrolytic refining", and the sulfuric acid production from smelting flue gas adopts "dilute acid dynamic wave Washing and purification, two-turn and two-suction" + "desulfurization" process. A variety of wastewaters are produced during the copper smelting production process, among which the greatest impact on the environment is the large amount of high-salt wastewater generated after the waste acid produced by sulfuric acid purification is treated with the process of "sulfurization + gypsum neutralization + two-stage neutralization of iron salt to remove arsenic". The wastewater has the characteristics of high calcium, high COD...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
Aiming at the characteristics of high calcium, high COD and high salt of copper smelting high-salt wastewater, the invention provides a membrane method resourceful treatment device and method for copper smelting high-salinity wastewater. The method comprises the following steps: firstly, removing hardness, heavy metal ions, COD and suspended solids by pretreatment, then concentrating sodium sulfate by utilizing a nanofiltration membrane, separating nanofiltration produced water only containing sodium chloride and nanofiltration concentrated water rich in sodium sulfate, concentrating TDS of the nanofiltration produced water to 90-100 g / L by reverse osmosis and concentrated water reverse osmosis in sequence, evaporating and crystallizing to obtain industrial sodium chloride with the purity of more than 98.5%, purifying the nanofiltration concentrated water, concentrating TDS of the nanofiltration concentrated water to 130-170 g / L by utilizing ultrahigh-pressure reverse osmosis, evaporating and crystallizing to obtain industrial anhydrous sodium sulfate with the purity of more than 98.0%, and making the water produced by reverse osmosis, concentrated water reverse osmosis and ultrahigh-pressure reverse osmosis and evaporative crystallization condensate water form reuse water with TDSof less than 200 mg / L, wherein the reuse water is reused for copper smelting production, so that the purpose of membrane-method resourceful treatment of the copper smelting high-salinity wastewater is achieved.
Description
technical field [0001] The invention relates to a membrane-based recycling treatment device and treatment method for high-salt wastewater from copper smelting, and belongs to the technical field of industrial wastewater treatment. Background technique [0002] A large amount of heavy metal wastewater will be produced in the production process of copper smelting, especially a large amount of high-salt wastewater generated by the waste sulfuric acid treatment in the sulfuric acid production process of copper smelting flue gas. The wastewater has high calcium, high COD (chemical oxygen demand), high salt (mainly sodium sulfate and sodium chloride), improper handling will cause serious pollution to the environment. At present, there are some patented technologies for resource treatment of copper smelting high-salt wastewater, such as 201510711446.X, a copper smelting wastewater desalination method, which consists of a softening sedimentation tank, a filtration unit, an ion excha...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): C02F9/10C02F11/122C02F103/16
CPCC02F9/00C02F11/122C02F1/66C02F1/5281C02F1/44C02F1/442C02F1/72C02F1/001C02F1/441C02F5/08C02F1/04C02F1/38C02F1/444C02F1/283C02F1/50C02F2103/16C02F2301/08C02F2301/066C02F2303/14
Inventor 张博戚可卓
Owner 江苏卓博环保科技有限公司