Suvni tozalash qatronidan foydalanish jarayonida 8 ta savolga e'tibor qaratish lozim

Qatronlar suvni tozalash jarayonlarida keng qo'llaniladi. Suv ta'minotini tozalashda u yumshatilgan suv, toza suv va ultra toza suv ishlab chiqarish uchun suvni yumshatish va tuzsizlantirish uchun ishlatilishi mumkin; chiqindi suvlarni tozalashda oqava suvdagi ba'zi zararli moddalarni olib tashlash va qimmatbaho kimyoviy moddalar, og'ir metallar va nodir elementlarni qayta tiklash mumkin, Kimyo sanoatida, biofarmatsevtikada va boshqalarda ajratish, kontsentratsiya, tozalash va hokazolarni samarali amalga oshirishi mumkin.

I believe that many  friends in water treatment field knew or have used water treatment resins. Today we will talk about water treatment resins in details.

01 What is "resin"?

Qatronlar: yuqori molekulyar polimer sferik zarrachalar, uch oʻlchamli toʻr tuzilishi va adsorbsion tanlash xususiyatlari-.

Suvni tozalash qatroni bo'linadikation qatroni va anion qatroni, kation qatroni yana natriy tipiga va vodorod turiga bo'linadi, natriy tipidagi qatron suvni yumshatish uchun suvdagi kaltsiy va magniy ionlarini natriy ionlariga almashtiradi. Vodorod qatroni suvni yumshatish uchun suvdagi kaltsiy va magniy ionlarini vodorod ionlariga almashtirishdir. Anion qatroni suvdagi kislota ionlarini almashtira oladigan gidroksid ionlarini o'z ichiga oladi. Shu bilan birga, anion qatroni va vodorod kationi qatronidan foydalanish suvni yumshata oladi. Suv toza suvga aylanadi.

Suvni tozalash sanoatida ion almashinuvi suvdagi ionlar va ion almashinadigan smoladagi ionlarning teng-zaryadlangan molyar miqdori bilan reaksiyasidir.

02 Qatronlar ishlatishda yuzaga kelishi mumkin bo'lgan muammolar

1. Backwash loss  

 If the backwash flow is too large or the backwash operation is abnormal, resin loss will occur, and a large amount of resin is often found in the trenches and waste water pools.

2. The flow-through part is damaged  

Uskunadan qatron oqib chiqib, post{0}}uskunalar yoki suv taʼminoti tizimiga kirib, post{1}}uskunaning ishlashini qiyinlashtiradi va oqava suv sifatini yomonlashtiradi.

3. The resin layering is not clear  For example, mixed bed requires two resins to be well layered, otherwise the water production and effluent quality will be reduced. In severe cases, the effluent will fail to meet the required indicators.

4. Contamination of cation resin by turbidity 

 The turbidity of the influent water exceeds the requirement or the precipitation phenomenon occurs in the direct-current coagulation. When more suspended solids enter the first-stage ion exchanger, the phenomenon of resin pollution will occur. These suspensions often contain coagulants, typically salts of high-valent metal ions.

5. Calcium sulfate precipitation 

Kationik qatronni qayta tiklash uchun sulfat kislota ishlatilsa, sulfat kislota konsentratsiyasi juda yuqori bo'lsa va oqim tezligi juda sekin bo'lsa, kaltsiy sulfat qatronlar zarralari yuzasida cho'kadi, natijada oqava suvning qattiqligi paydo bo'ladi. Bu vaqtda u cho'kilgan sulfat kislotani eritib yuborish uchun bir marta xlorid kislotasi bilan qayta tiklanishi yoki o'z vaqtida ko'p miqdorda suv bilan yuvilishi mumkin.

6. Temirning ifloslanishi

 Both cation and anion resins have the problem of being polluted, but the mechanism of iron pollution of these two resins is different. In the primary desalination equipment, the cation resin contacts the raw water with iron ions, iron agglomerated products and corrosion products. After the iron ions in the water are absorbed by the cationic resin, it is difficult to regenerate, and the corrosion products become iron ions during regeneration. Iron ion pollution will make the color darker, accelerate oxidative degradation, gradually reduce performance, and deteriorate the quality of effluent. Silicon, organic matter, etc. combine together to form a complex material form to contaminate the anion resin, and this contamination is cumulative.

7. Kolloid kremniy oksidi

Jellangan silika - bu kuchli asosli anion qatronlarining noto'g'ri regeneratsiyasi natijasida yuzaga kelgan hodisa. Xom suvda kremniy va kuchli kislota anionlarining nisbati katta bo'lsa yoki suvda kuchli kislotani o'zlashtiradigan zaif asosli anion qatroni mavjud bo'lsa, anion qatronini qayta tiklashda kolloid silika hodisasi paydo bo'lishi mumkin. Bu hodisa lye kontsentratsiyasi yuqori va harorat va oqim tezligi past bo'lganda yuzaga kelishi ehtimoli ko'proq.

8. Organic pollution 

Qatronlar organik ifloslanishi suvni tozalashda asosiy muammo hisoblanadi. Tabiiy suvning ifloslanishi tobora kuchayib borayotganligi sababli, qatronlarning ifloslanishi suvni tozalash uchun katta xavf tug'dirdi. Qatronlar ishqoriyligi qanchalik kuchli bo'lsa, organik ifloslanish darajasi shunchalik jiddiy bo'ladi.