TW200804200A - The treatment method for electroless copper plating rinsing wastewater - Google Patents

Abstract

The invention provides a treatment method of electroless copper plating rinsing wastewater, which includes the following basic steps: rinsing wastewater of electroless copper plating → adjusting PH value → ion exchanging → ultrafiltration → reverse osmosis → reusing the cleaning water/loop treatment of concentrated water. The process is that heavy metals are recycled from wastewater by exchanging the heavy metals in the wastewater with the same type ions in the ion exchande resin. Then, the macromolecular impurities are removed by processing ultrafiltration. The reverse osmosis process is carried out to separate the unpurified wastewater. Then, the unpurified wastewater is transferred back to the beginning untreated rinsing wastewater to proceed loop treatment together. Finally the purified cleaning water is recycled and reused.

Description

200804200 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method for treating copper plating wastewater by electroless copper plating. Friends, knowing about a kind of chemistry [Previous technology] The rubber meter is used in plastic copper, and the rinsing of the workpiece can be recovered or discharged after the chemical mine is contained in the shipowner. Despite the traditional chemical deposition, the need to enter the = = metal _ sub, but still need to be professionally required to go to the weight = [Summary of the content] The purpose of the present invention is to provide a chemical mine steel Lu Wash wastewater treatment The method is to substantially achieve zero discharge of the rinsing wastewater. The money illusion you wash this invention combined with the _ sub-exchange method and reverse osmosis combined with the large metal copper resources, and no waste slag sludge produced ^ ring ^ can only return to the invention of the electroless copper rinsing wastewater treatment process : = · Withered positive value, the pH value of the chemical copper rinsing wastewater is adjusted to 3~ • Ion parent exchange, the chemical copper rinsing wastewater flows through the same type of heavy metal ions in the ionized wastewater Ion ^ rod six ' change to recover heavy metals in wastewater; c · ultrafiltration, half of the membrane to remove the macromolecular impurities contained in the wastewater; to · d · reverse osmosis, whereby a reverse osmosis membrane will be purified And the unpurified wastewater is separated from the e·clean water reuse/concentrated water loop treatment, and the above reverse osmosis membrane is separated.

For reuse, for unpurified wastewater, it is transported back to the original chemical Γ 铜 copper rinsing wastewater for reprocessing. X, using the chemical mirror copper rinsing wastewater treatment method of the invention, the method itself can be a closed loop, and the heavy metal can be recovered substantially at the same time as the effluent wastewater can be realized to avoid environmental pollution. In order to make the purpose, structure, and living diagram of the present invention detailed, the following is a brief understanding of the features and functions of the present invention. [Embodiment] As shown in FIG. 1, it is a method of the present invention, and the present invention begins. It is the chemical money copper ^, the picture 'from the figure can be very obvious to put its PH letter paved ~ η ^ taste washing wastewater to adjust the pH value of 101 steps,

In order to adjust its devaluation to 3~1〇, after the lack of six or four, a-, · set into the 仃 ion exchange 102 step, using the same 3 steps of the ion, through the ^- to its clean water, water back The ring treatment 1Q5 exchange resin characteristics, so that the waste water in the Cao Ba ^ Ding ^ in the father Lai Bie ϋ ^ μ a T weight to the same ion and ion exchange resin in the same type of filtration 103 steps: then through a clever paste: The water-washing towel almost detects that it does not exchange its net-type ions, and passes through the semi-permeable membrane to remove its waste water: containing the genus, sub-step 103' = 104 steps, to clean and unpurify == line = after Through a g of wastewater, re-treating, so that the loop can be purified, the base

The above is only the preferred embodiment of the present invention, and the implementation of the present invention, which is defined by the present invention, is covered by the scope of the present invention. The average of the halls is as follows: Figure 1 is a schematic diagram of the flow of the present invention. [Main component symbol description] 101~105 Step 6

Claims (1)

200804200 X. Patent application scope 1. 1. The method for processing the lyophilized copper rinsing wastewater, the steps of the financial method include: a. Adjusting the pH value to adjust the pH value of the chemical copper rinsing wastewater to 3~1〇; b. Ion exchange 'where the step is to utilize the characteristics of the ion exchange resin, the heavy metal ions in the wastewater are exchanged with the same type of ions in the ion exchange resin to recover the heavy metals in the wastewater, C·Ultrafiltration, through half of the membrane to remove the waste water Containing macromolecular impurities; d reverse osmosis, this step is to separate the purified and unpurified wastewater through a reverse osmosis membrane; x • e. purified water reuse / concentrated water loop treatment 'the above reverse osmosis membrane The separated purified water is recycled, and the unpurified wastewater is sent back to the beginning of the chemical clock copper rinsing wastewater for reprocessing.