Spray paint wastewater treatment method
A waste water treatment and waste water technology, which is applied in the direction of waste paint treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of effluent water quality, difficult safety discharge standards, large volume of waste water to be treated, and unsuitable for wide-scale application. Good decolorization effect, low processing cost and low price
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Embodiment 1
[0024] A method for treating waste water from spray painting, comprising the steps of:
[0025] 1) remove the suspended solids from the collected paint spraying waste water through the grille, and stay in the first treatment liquid obtained after aeration;
[0026] 2) adding a pH regulator to the first treatment solution obtained in step 1), and adjusting the pH to obtain a second treatment solution;
[0027] 3) adding soluble superphosphate to the second treatment solution obtained in step 2) to carry out the first stirring reaction to obtain the third treatment solution;
[0028] 4) adding ferrous salt solution to the third treatment solution obtained in step 3), and carrying out the second stirring reaction to obtain the fourth treatment solution;
[0029] 5) adding a coagulant to the fourth treatment solution obtained in step 4) and stirring for the third time, then adding a coagulant and stirring for the fourth time, and leaving it to stand for stratification;
[0030] ...
Embodiment 2
[0037] A method for treating waste water from spray painting, comprising the steps of:
[0038] 1) remove the suspended solids from the collected paint spraying waste water through the grille, and stay in the first treatment liquid obtained after aeration;
[0039] 2) adding a pH regulator to the first treatment solution obtained in step 1), and adjusting the pH to obtain a second treatment solution;
[0040] 3) adding soluble superphosphate to the second treatment solution obtained in step 2) to carry out the first stirring reaction to obtain the third treatment solution;
[0041] 4) adding ferrous salt solution to the third treatment solution obtained in step 3), and carrying out the second stirring reaction to obtain the fourth treatment solution;
[0042] 5) adding a coagulant to the fourth treatment solution obtained in step 4) and stirring for the third time, then adding a coagulant and stirring for the fourth time, and leaving it to stand for stratification;
[0043] ...
Embodiment 3
[0050] A method for treating spray paint wastewater, comprising the steps of:
[0051] 1) Pass the collected spray paint wastewater through the grid to remove suspended matter, and stay in the first treatment liquid obtained after aeration;
[0052] 2) adding a pH regulator to the first treatment solution obtained in step 1), and adjusting the pH value to obtain a second treatment solution;
[0053] 3) adding soluble superphosphate to the second treatment solution obtained in step 2) to carry out the first stirring reaction to obtain the third treatment solution;
[0054] 4) adding a ferrous salt solution to the third treatment solution obtained in step 3), and performing a second stirring reaction to obtain a fourth treatment solution;
[0055] 5) adding a coagulant to the fourth treatment solution obtained in step 4) for the third stirring, then adding the coagulant and stirring for the fourth time, and standing for stratification;
[0056] 6) Remove the suspended matter i...
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