Steel mesh after galvanizing treatment will produce a large amount of waste, which will pollute the environment. Next, we will talk about the method of waste slag treatment.

　　鍍鋅廢渣主要來(lái)自兩個(gè)方面:一是堿性鍍鋅液中產(chǎn)生的碳酸鹽;第二，金屬氫氧化物在污水處理中形成。

　　Zinc-plating slag mainly comes from two aspects: one is carbonate produced in alkaline zinc-plating bath; the other is metal hydroxide formed in sewage treatment.

　　種是用碳酸鹽處理堿性鋅:氰化物鋅和堿性鋅都是用氫氧化鈉和氧化鈉處理的，它們都能吸收空氣中的二氧化碳并產(chǎn)生碳酸鈉。當(dāng)碳酸鈉含量較低時(shí)，對(duì)洗浴有好處。然而，過(guò)多的內(nèi)容會(huì)影響浴的性能。然后通過(guò)冷凍或加入石灰水將碳酸鹽沉淀出來(lái)。

　　The first is to treat alkaline zinc with carbonate: both cyanide zinc and alkaline zinc are treated with sodium hydroxide and sodium oxide, which can absorb carbon dioxide from the air and produce sodium carbonate. When the content of sodium carbonate is low, it is good for bathing. However, too much content can affect the performance of the bath. Carbonate is then precipitated by freezing or adding limewater.

　　在堿性鋅酸鹽鋅溶液中形成的污泥可溶于水，通過(guò)調(diào)節(jié)PH值直接排出。

　　Sludge formed in alkaline zinc zincate solution can be dissolved in water and discharged directly by adjusting PH value.

　　鍍鋅鋼網(wǎng)片生產(chǎn)過(guò)程中產(chǎn)生的氰化鍍鋅溶液中形成的污泥除含有大量碳酸鹽外，還含有氰化鈉涂層，給處理帶來(lái)麻煩。該處理方法是將污泥與水溶解，按照含氰廢水的處理方法進(jìn)行處理。

　　The sludge formed in cyanide zinc plating solution during the production of galvanized steel mesh contains not only a large amount of carbonate, but also sodium cyanide coating, which brings troubles to the treatment. The treatment method is to dissolve sludge and water and treat cyanide-containing wastewater according to the treatment method.

　　關(guān)于污泥的處理，我們從前面的討論中得知，處理鍍鋅廢水產(chǎn)生的污泥主要是氫氧化鈣和氫氧化鉻。簡(jiǎn)單的氫氧化鋅污泥可以溶解在濃氫氧化鈉溶液中，再回到鍍液(堿性鍍鋅液)中使用。酸性鍍鋅液應(yīng)先用鹽酸將污泥溶解到氯化鋅中，再加入浴液。

　　As for sludge treatment, we know from the previous discussion that the sludge from zinc plating wastewater treatment is mainly calcium hydroxide and chromium hydroxide. Simple zinc hydroxide sludge can be dissolved in concentrated sodium hydroxide solution and then returned to the plating solution (alkaline zinc plating solution). The sludge should be dissolved into zinc chloride with hydrochloric acid before adding bath solution.

　　以上是鋼網(wǎng)片的相關(guān)內(nèi)容，希望對(duì)您有所幫助。

　　Above is the relevant content of steel mesh, I hope to help you.