工藝特點(diǎn) Technics Characteristic
電鍍廢水中的主要污染物質(zhì)均為各種金屬離子，常見(jiàn)的有鉻、銅、鎳、鉛、鋁、金、銀、鎘、鐵等，其實(shí)是酸類和堿類物質(zhì)，如硫酸，鹽酸，硝酸，磷酸和氫氧化鈉，碳酸鈉等到，有些電鍍液還使用了顏料等到其它物質(zhì)，這些物質(zhì)大部分是有機(jī)物，另外，在鍍件基材的預(yù)處理過(guò)程中漂洗下來(lái)的汕脂，油污，氧化鐵皮，塵土也被帶進(jìn)了電鍍廢水中。
①同傳統(tǒng)的處理工藝相比較，最新的電鍍廢水處理方案大大減少了酸堿溶液的使用量，不但降低了系統(tǒng)的成本投入，且利于環(huán)保。②該工藝的產(chǎn)水水質(zhì)標(biāo)準(zhǔn)相對(duì)較高，能夠達(dá)到工業(yè)軟化水標(biāo)準(zhǔn)，因而回收的產(chǎn)水可以用于一些生產(chǎn)中的輔助用水。③采用了膜組件作為工藝的核心處理環(huán)節(jié)，整體工藝設(shè)計(jì)合理，具有非常高的可靠性能，使得系統(tǒng)的運(yùn)行效率大大提高。④廢水可以直接進(jìn)入膜分離設(shè)備，無(wú)需添加藥劑降低了系統(tǒng)的運(yùn)行成本，且簡(jiǎn)化了操作步驟，便于管理。
The main pollutants in electroplating wastewater are metal ions, such as chromium, copper, nickel, lead, aluminum, gold, silver,cadmium, iron and so on. They are acids and bases, such as sulfuric acid, hydrochloric acid and nitric acid. Phosphoric acid andsodium hydroxide, sodium carbonate wait, some electroplating solutions also use pigments to wait for other substances, thesesubstances are mostly organic matter, in addition, in the pretreatment process of the base material washed off Shantou grease,oil. lron oxide and dust are also brought into electroplating wastewater.
Compared with the traditional treatment process, the latest electroplating wastewater treatment scheme has greatly reduced theuse of acid-base solution, not only reduced the cost of the system. The water quality standard of this process is relatively highand can reach the standard of industrial softened water. Therefore, the recycled water can be used in some auxiliary water inproduction.3. The membrane module is used as the core of the process. The overall process design is reasonable and has avery high reliability. The operation efficiency of the system is greatly improved. 4 wastewater can be directly entered into themembrane separation equipment. The operation cost of the system is reduced without adding medicament, and the operationsteps are simplfied. The convenient management of 5.
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