How much is a day for 30 meters
Publish: 2021-04-22 11:48:15
1. The treatment methods of acid mine wastewater mainly include neutralization method, sulfurization method, precipitation flotation method, extraction electrowinning method, biochemical method, etc. But there are many problems in these methods, especially secondary pollution. The application of ultra-low pressure reverse osmosis membrane in the treatment and reuse of mine acid wastewater effectively improves the existing problems of the former and shows great advantages in instrial wastewater treatment
the ultra-low pressure reverse osmosis membrane was used to treat acid mine wastewater after secondary treatment, and the rejection rate of heavy metal ions by ultra-low pressure reverse osmosis membrane was & gt; The concentration of nl2 +, Cu2 +, Zn2 + and Pb2 + ions in the permeate were lower than 0.4 mg / L, and the total conctivity of the permeate was & lt; 100US / cm, which can meet the requirements of reuse, and the concentrate can be further recycled.
the ultra-low pressure reverse osmosis membrane was used to treat acid mine wastewater after secondary treatment, and the rejection rate of heavy metal ions by ultra-low pressure reverse osmosis membrane was & gt; The concentration of nl2 +, Cu2 +, Zn2 + and Pb2 + ions in the permeate were lower than 0.4 mg / L, and the total conctivity of the permeate was & lt; 100US / cm, which can meet the requirements of reuse, and the concentrate can be further recycled.
2. three thousand and fifty ÷ 30 ≈ 101.67 (yuan)
a day is about 101.67 yuan.
a day is about 101.67 yuan.
3. 30 / 360 = 1 / 12
about 0.083 yuan a day
about 0.083 yuan a day
4. Unknown_Error
5. It depends on what you have done. If you are a teacher, you may have a day! Some more, some less! Because some schools have different courses. If they are cement workers, maybe they can't say how much it costs!
6.
Hello, classmate, this is a simple division, 30 days a month, 10000 days a day ÷ 30 ≈ 333.3 yuan; A month is 31 days, and each month is 10000 ÷ 31 ≈ 322.6 yuan. Thank you
7. Friends 13000 a month ÷ 30, that's equal to. A little more than 300 a day.
8. It's about $1500 a month. If you work every day, it's about $50 a day. If you have weekends, it's about $68 a day.
9. My opinion is to spend as much as you earn, spend as much as you earn, spend less as you can
according to the family of three wage earners, the daily expenses, including food, housing and transportation expenses, are generally about 50 yuan, excluding clothing
if you have a fire, the average family in the second and third tier cities is about 1500 yuan a month. The first tier cities also won 2000 yuan
that is to say, for al employees, the salary is more than enough.
according to the family of three wage earners, the daily expenses, including food, housing and transportation expenses, are generally about 50 yuan, excluding clothing
if you have a fire, the average family in the second and third tier cities is about 1500 yuan a month. The first tier cities also won 2000 yuan
that is to say, for al employees, the salary is more than enough.
10. There is also a rental of their own time to help others do something and so on... Specific I do not know!!!
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