A method for reducing cod of tricyclazole pesticide wastewater
A pesticide wastewater and tricyclazole technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problem of low Fenton oxidation degradation rate, reduce concentration, improve efficiency, and avoid disposal costs Effect
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Embodiment 1
[0037] Such as figure 1 As shown, a process wastewater producing tricyclazole in Jiangsu, among which, the water quality of high-concentration wastewater (containing high-salt wastewater condensate) is: CODcr15028mg / L, total nitrogen 850mg / L, water volume 175.5t / d; replacement section produces hydrazine hydrate wastewater Water quality: CODcr42000mg / L, total nitrogen 10280mg / L, hydrazine hydrate 15000mg / L, water volume 7.2t / d; waste gas absorption water and vacuum pump water produced in the chlorination section Water quality: CODcr3080mg / L, total nitrogen 156mg / L, hydrochloric acid mass concentration 10 %, the amount of water is 12t / d. combined with figure 1 , present embodiment proposes a kind of method that reduces tricyclazole wastewater COD, and its steps are as follows:
[0038] (1) When running for the first time, adjust the pH of tricyclazole high-concentration wastewater to 5 with hydrochloric acid, add hydrogen peroxide with a mass fraction of 30% and a ferrous sulf...
Embodiment 2
[0047] Such as figure 1 As shown, a process wastewater producing tricyclazole in Jiangsu, among them, the water quality of high-concentration wastewater (including high-salt wastewater condensate): CODcr12650mg / L, total nitrogen 627mg / L, water volume 175.5t / d; replacement section produces hydrazine hydrate wastewater Water quality: CODcr38500mg / L, total nitrogen 8970mg / L, hydrazine hydrate 13068mg / L, water volume 7.2t / d; water quality of waste gas absorption water and vacuum pump water produced in chlorination section: CODcr2980mg / L, total nitrogen 120mg / L, 12t / d. combined with figure 1 , present embodiment proposes a kind of method that reduces tricyclazole wastewater COD, and its steps are:
[0048] (1) When running for the first time, adjust the pH of tricyclazole high-concentration wastewater to 3 with hydrochloric acid, add hydrogen peroxide with a mass fraction of 50% and a ferrous sulfate solution with a mass concentration of 30%, and aerate and stir for 150 minutes. ...
Embodiment 3
[0056] Such as figure 1 As shown, a process wastewater producing tricyclazole in Jiangsu, among which, the water quality of high-concentration wastewater (containing high-salt wastewater condensate) is: CODcr11280mg / L, total nitrogen 597mg / L, and water volume 175.5t / d; the replacement section produces hydrazine hydrate wastewater Water quality: CODcr35600mg / L, total nitrogen 8125mg / L, hydrazine hydrate 12560mg / L, water volume 7.2t / d; water quality of waste gas absorption water and vacuum pump water produced in chlorination section: CODcr3200mg / L, total nitrogen 160mg / L, 12t / d. combined with figure 1 , present embodiment proposes a kind of method that reduces tricyclazole wastewater COD, and its steps are:
[0057] (1) When running for the first time, adjust the pH of tricyclazole high-concentration wastewater to 2 with hydrochloric acid, add hydrogen peroxide with a mass fraction of 40% and a ferrous sulfate solution with a mass concentration of 25%, and aerate and stir for 1...
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