Resource processing method and device for preparing industrial salt from high-concentration and high-salt chemical wastewater
A technology for chemical wastewater and high-salt wastewater is applied in the field of resource treatment of industrial salt extracted from high-salt and high-concentration chemical wastewater.
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[0026] Embodiment 1, a resource treatment method for preparing industrial salt from high-concentration and high-salt chemical wastewater, including the following steps:
[0027] 1. Homogenization step: For each stock of high-concentration and high-salt wastewater in the chemical production process, first place it in a high-salt water buffer tank for homogenization;
[0028] 2. Neutralization step: transfer the high-concentration and high-salt wastewater to the neutralization tank in batches and adjust the pH to 4~5 with hydrochloric acid (lye);
[0029] 3. Three-phase catalytic oxidation step: the high-concentration and high-salt wastewater after the neutralization step continuously enters the catalytic oxidation tower, the catalytic oxidation tower is loaded with surface active catalysts, the bottom of the tower is continuously fed with compressed air, and the top of the tower is continuously added with high-efficiency oxidants to neutralize The organic matter, oxygen and oxidant mo...
Example Embodiment
[0036] Embodiment 2, a resource treatment device for preparing industrial salt from high-concentration and high-salt chemical wastewater, including a high-salt water buffer tank, the high-salt water buffer tank is connected with a neutralization kettle, and the neutralization kettle is connected with a catalytic oxidation tower for catalytic oxidation The tower has a material inlet and a material outlet. The bottom of the catalytic oxidation tower is equipped with an air inlet, the top of the catalytic oxidation tower is equipped with a liquid inlet, and the liquid outlet of the neutralization kettle is connected to the catalytic oxidation tower with a material inlet for catalytic oxidation The material outlet of the tower is connected with a flocculation sedimentation tank, a flocculation sedimentation tank is connected to an intermediate buffer tank through a filter device, the outlet of the intermediate buffer tank is connected with an Ⅰ effect evaporator, and an Ⅱ effect evap...
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