Circulating water processing method
A treatment method and circulating water technology, applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of long treatment cycle and unstable treatment effect, and achieve easy operation , Avoid equipment corrosion, low operating costs
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Example Embodiment
[0050] Example 1
[0051] This embodiment is used to illustrate the circulating water treatment method provided by the present invention.
[0052] Such as figure 1 As shown, a bypass is installed on the right side of the tower tank 10 at the lower part of the cooling tower 3. The bypass includes a pipeline and an oil-water separator 9 (cyclone oil-water separator), and the circulating water is reintroduced into the tower tank 10 after oil-water separation. (Introduce the treated circulating water near the water outlet of the suction well 4), the treatment capacity of the bypass device is 200L / h. The water pump 1 supplies the circulating water in the suction well 4 to the water user 2, and the circulating water after the heat exchange of the cooling tower 3 enters the tower tank 10 again; during the test, the corrosion and scale inhibitor is maintained at 100mg / L and the bactericide is 0.5 mg / L. After the circulating water system has been running for 100 hours, add 3000 mg / L of g...
Example Embodiment
[0054] Example 2
[0055] This embodiment is used to illustrate the circulating water treatment method provided by the present invention.
[0056] The circulating water is treated according to the method of Example 1, the difference is that the oil-water separator 9 is a dissolved air flotation machine. After 100 hours of operation, 200mg / L of diesel and residual oil mixed oil (diesel and residue) is added to the circulating water. The weight ratio of oil is 1:1), simulating the leakage of oil at the end of the user 2 and closing the filter 5. After adding the mixed oil, the turbidity of the circulating water increases, and the water surface can be covered by yellow-brown oil, cooling the water tower pool , Flow meter and other places have uneven adhesion of oil. After 12h, add degreaser (10 grams of dodecyl dimethyl benzyl ammonium chloride, 10 grams of tetradecyl dimethyl benzyl ammonium chloride, 15 grams of N, N-bis A mixture of methyl dodecylamine, 5 g of N,N-dimethyltetrade...
Example Embodiment
[0058] Example 3
[0059] This embodiment is used to illustrate the circulating water treatment method provided by the present invention.
[0060] The circulating water is treated according to the method of Example 1, the difference is:
[0061] The degreasing agent is a mixture of 20 grams of dodecyl dimethyl benzyl ammonium chloride, 20 grams of N,N-dimethyl dodecylamine, 40 grams of ethanol myristyl amide and 20 grams of water.
[0062] In addition, when the turbidity of the circulating water does not increase after adding the degreaser, part of the circulating water is drawn through the bypass (the drawn amount accounts for 10% by weight of the total circulating water), and it is added at the inlet of the bypass pipe at 35°C Flocculant 8 (sodium carboxymethyl cellulose), and open the cyclone oil-water separator 9 for oil-water separation. It can be seen that the oil outlet of the cyclone separator flows out of yellow and black oil, and the amount of flocculant and flocculation tim...
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