Technology for treating electronic circuit board manufacturing process waste water
A technology of electronic circuit board and production process, which is applied in the field of waste water treatment of electronic circuit board production process, can solve the problems of difficult manual treatment, complex wastewater composition, waste of resources, etc., to solve serious COD exceeding the standard, improve resource utilization efficiency, The effect of preventing heavy metal poisoning
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[0022] The present invention will be further described in detail below in conjunction with specific embodiments.
[0023] The treatment process of high-concentration, refractory, toxic and harmful wastewater produced in the production process of electronic circuit boards includes the use of chemical coagulation flocculation reaction, biological contact oxidation, and reverse osmosis process systems, among which,
[0024] Wastewater quality can be specifically divided into the following four categories of analysis:
[0025] 1. Organic and oily wastewater (referred to as organic wastewater)
[0026] CODcr: 400—1000 mg / L; PH: 8—12
[0027] SS: 100-200 mg / L; Chromaticity: 1000-1500 times.
[0028] The organic wastewater generated in the dry film, development, degreasing and other sections flows into the organic wastewater collection tank with oil separation function, and NaOH is added to the rear section of the collection tank to adjust the pH value of the wastewater to weak alk...
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