A method for degassing recycled water and its degassing system
A water reuse and degassing technology, applied in chemical instruments and methods, degassed water/sewage treatment, water pollutants, etc., can solve the problems of poor removal efficiency, high equipment requirements, high treatment costs and harmful by-products
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Embodiment 1
[0037] The method for degassing the biochemically treated coal chemical industry wastewater by using the above degassing system comprises the following steps:
[0038] Step 1. After testing, the CO in the reused water 3 2- and HCO 3 - The total content is 30mg / L (as CaCO 3 count), NH 4 + The content of TOC is 2mg / L, the TOC content is 1.66mg / L, turn on the water inlet pump 1 and the one-way water valve 2, let the return water enter the pH adjustment device 3, and adjust the pH of the return water to 4;
[0039] Step 2, the pH-adjusted reused water enters the degassing tower through the water distribution effect of the spray nozzle, so that the recycled water is evenly distributed in the degassing packing 7, wherein the water flow rate of the recycled water in the degassing tower is 0.005m / s, the thickness of the degassing filler 7 is 1.2m, at the same time, the fan 8 blows off, and the air-liquid ratio of the blown off is 0.1m 3 / kg, the flow rate of the upward airflow ...
Embodiment 2
[0043] The method for degassing the biochemically treated coal chemical industry wastewater by using the above degassing system comprises the following steps:
[0044] Step 1. After testing, the CO in the reused water 3 2- and HCO 3 - The total content is 34mg / L (as CaCO 3 count), NH 4 + The content of TOC is 1.5mg / L, the TOC content is 2.58mg / L, turn on the water inlet pump 1 and the one-way water valve 2, let the return water enter the pH adjustment device 3, and adjust the pH of the return water to 4.5;
[0045] Step 2: The pH-adjusted reused water enters the degassing tower through the water distribution effect of the spray nozzle, so that the recycled water is evenly distributed in the degassing packing 7, wherein the water flow rate of the recycled water in the degassing tower is 0.01 m / s, the thickness of the degassing packing 7 is 1.3m, and at the same time, the fan 8 blows off, and the air-liquid ratio of the blowing off is 0.1m 3 / kg, the flow rate of the upwa...
Embodiment 3
[0049] The method for degassing the biochemically treated coal chemical industry wastewater by using the above degassing system comprises the following steps:
[0050] Step 1. After testing, the CO in the reused water 3 2- and HCO 3 - The total content is 33mg / L (as CaCO 3 count), excluding NH 4 + , the TOC content is 1.97mg / L, turn on the water inlet pump 1 and the one-way water valve 2, let the return water enter the pH adjustment device 3, and adjust the pH of the return water to 5;
[0051] Step 2: The pH-adjusted reused water enters the degassing tower through the water distribution effect of the spray nozzle, so that the recycled water is evenly distributed in the degassing packing 7, wherein the water flow rate of the recycled water in the degassing tower is 0.015 m / s, the thickness of the degassing packing 7 is 1.5m, and at the same time, the fan 8 blows off, and the air-liquid ratio of the blowing off is 0.3m 3 / kg, the flow rate of the upward airflow is 30m / s,...
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