Phosphorus-free composite scale and corrosion inhibitor and application thereof as well as circulating water treatment method
A technology of scale and corrosion inhibitors and corrosion inhibitors, applied in water/sludge/sewage treatment, descaling and water softening, chemical instruments and methods, etc., can solve the problems of short drug effect time and slow effect of fungicides , to achieve the effects of long drug effect time, improved bactericidal effect, and fast bactericidal effect
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Embodiment 1
[0061] Add polyaspartic acid, thiourea, T225, manganese sulfate monohydrate and isothiazolinone to test water 1, 2 and 3 (adjust the pH value of test water in the range of 7.8-8.3 with sulfuric acid) respectively, so that Polyaspartic acid, thiourea, T225, Mn in water 2+ and isothiazolinone concentrations were 4mg / L, 100mg / L, 8mg / L, 1mg / L and 50mg / L.
Embodiment 2
[0063] Add polyepoxysuccinic acid, methylthiourea, AA / HPA / MA, manganese chloride and Thiazolone, polyepoxysuccinic acid, methylthiourea, AA / HPA / MA, Mn in water 2+ and isothiazolinone concentrations were 6mg / L, 110mg / L, 9mg / L, 1.5mg / L and 80mg / L.
Embodiment 3
[0065] Add polyaspartic acid, urotropine (Jinan Darui Chemical Co., Ltd.), AA / AMPS to test water 1, 2, and 3 respectively (use sulfuric acid to adjust the pH value of the test water in the range of 7.8-8.3) / HPA, manganese sulfate monohydrate and isothiazolinone, polyaspartic acid, methenamine, AA / AMPS / HPA, Mn 2+ and isothiazolinone concentrations were 8mg / L, 120mg / L, 10mg / L, 2mg / L and 100mg / L.
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