Device and method for in-situ multistage treatment of high-salinity wastewater
A technology for high-salt wastewater and secondary wastewater, which is applied in the fields of water/sewage multi-stage treatment, chemical instruments and methods, reduced water/sewage treatment, etc., and can solve problems such as the difficulty of high-salt wastewater treatment
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Embodiment 1
[0074] like figure 1 and figure 2 As shown, a device and method for in-situ multi-stage treatment of low-temperature dynamic high-salt wastewater based on deep-sea cold spring microorganisms is used to treat organic high-salt heavy metal composite wastewater produced in mineral processing, metallurgy, and chlor-alkali industries. Wastewater mainly contains Cl - , SO 4 2- Such as inorganic salt ions, macromolecular organic substances and heavy metal ions such as copper, lead, zinc, iron, chromium, vanadium, among which COD is as high as 1000-10000mg / L, NH 4 + The concentration is 500mg / L, V 5+ The concentration is 600mg / L, Cu 2+ The concentration is 300mg / L, the salinity range is 5-8%, the pH is 5-7, and the treatment temperature is 0-30°C. There are 8, 6, and 4 processing units in the primary, secondary, and tertiary processing devices of the processing system, respectively.
[0075] S1: The organic high-salt heavy metal composite wastewater is pumped from the buffer ...
Embodiment 2
[0080] like figure 1 and figure 2 As shown, a device and method for in-situ multi-stage treatment of low-temperature dynamic high-salt wastewater based on deep-sea cold spring microorganisms is used to treat organic high-salt heavy metal composite wastewater produced in the petrochemical industry. Petrochemical wastewater contains more carcinogenic heavy metal elements, such as vanadium, chromium, molybdenum, etc., and also contains macromolecular organic compounds such as benzene. where V 5+ The concentration is 800mg / L, Cr 6+ The concentration is 400mg / L, Mo 6+ The concentration is 700mg / L, the COD is as high as 12000mg / L, the salinity range is 5-10%, the pH is 6-9, and the treatment temperature is 0-25°C. There are 8, 8, and 4 processing units in the first, second, and third-level processing devices of the processing system, respectively.
[0081] S1: The organic high-salt heavy metal composite wastewater is pumped from the buffer pool 3 to the primary wastewater trea...
Embodiment 3
[0086] like figure 1 and figure 2 As shown, a device and method for in-situ multi-stage treatment of low-temperature dynamic high-salt wastewater based on deep-sea cold spring microorganisms is used to treat coking wastewater generated during coke refining, gas purification and chemical product recovery. COD up to 25000mg / L, Fe 2+ The content is 1100mg / L, Cu 2+ The content is 300mg / L, NH 4 + -N concentration is 400mg / L, NO 2 - - The N concentration is 800mg / L, the salinity range is 6-9%, the pH is 1-3, and the treatment temperature is 1-15°C. There are 8, 8, and 4 processing units in the first, second, and third-level processing devices of the processing system, respectively.
[0087] S1: The organic high-salt heavy metal composite wastewater is pumped from the buffer pool 3 to the primary wastewater treatment area 8 through the vacuum pump 2. This area is composed of 6 graphite felt adsorption treatment units 3, and the gradient increases from the water inlet to the w...
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