2021-10-11
Why does the processing capacity of your membrane product decline and need to be replaced frequently?
After the membrane system operates for a period of time, sometimes the processing capacity decreases significantly and can not reach the design capacity. The reasons for this phenomenon are mainly related to the working environment of membrane system, type selection and design, installation and cons...
2021-10-09
Design principle and guiding scheme of reverse osmosis pretreatment equipment
Oil and grease cannot be contained in the reverse osmosis feed water, because the presence of oil and grease in the raw water may cause chemical degradation of the aromatic polyamide active layer of the reverse osmosis membrane in the application process and cause degradation of membrane performance...
2021-10-08
Why add scale inhibitor in reverse osmosis equipment?
Before talking about the role of reverse osmosis scale inhibitor, the water treatment equipment briefly describes the reverse osmosis system: the reverse osmosis water treatment equipment passes the raw water through precision filter, granular activated carbon filter, compressed activated carbon fil...
2021-10-07
Common water treatment methods
Common water treatment methods include: (I) sediment filtration method, (II) hard water softening method, (III) activated carbon adsorption method, (IV) deionization method, (V) reverse osmosis method, (VI) excess filtration method, (VII) distillation method, (VIII) ultraviolet disinfection method, ...
2021-09-20
[collection] operating procedures for MBR membrane cleaning
1、 MBR membrane fouling judgment
On line maintenance and cleaning: it has nothing to do with the pressure difference. Stop filtering regularly (about once a week) and drive the low concentration (300 ~ 500mg / L) solution into the membrane for cleaning.
Online enhanced washing: monitor and manage...
2021-09-16
Working principle of manganese and iron removal from groundwater (manganese sand)
Working principle of manganese and iron removal by manganese sand
There are many methods to remove iron and manganese. Generally, the principle of oxidative removal of iron and manganese is adopted. It is the most economical and effective treatment method at present. Many equipment use natural mang...
2021-09-15
There is always one for you -- a collection of 56 abnormal problems in sewage treatment
Summarize the common problems and answers in sewage treatment practice:
Question 1:
Process: hydrolysis + contact oxidation method. The COD of effluent is 70mg / L, but it looks very turbid. I don't know why? Is the method of measuring MLSS the same as that of Measuring SS?
answer:
(1) If to...
2021-08-30
Complete collection of pump faults and solutions water treatment equipment
Can't the water pump start? Insufficient flow? Can't suck water? Vibration, noise, motor failure... What should I do?
The water pump cannot be started
Common causes: the packing is too tight or the impeller and pump body are blocked by sundries; The pump shaft, bearing and leakage reducing...
2021-08-28
Do you know how to debug the water treatment reverse osmosis pressure switch?
The high / low pressure protection of water treatment reverse osmosis equipment is to prevent the RO high-pressure pump from idling or working under the limit high / low pressure.
High voltage switch is used for high voltage protection. With the increase of equipment service time, the membrane will...
2021-08-28
[cold knowledge] Why is P in
Which word is pH abbreviated?
After middle school and entering the health care mode in advance, we must be familiar with the concept of pH.
In addition to the pH of the solution, the human body also has pH, which is judged according to the pH of body fluid (body fluid or body fluid).
PH value 7 i...
2021-08-09
Environmental protection knowledge competition | complete question bank, pure water equipment, ultra pure water equipment manufacturers
（1） Judgment question:
We can dispose of domestic garbage in the way we want. （ (wrong)
2. Within the closed protection area of sandy land, all activities damaging vegetation are prohibited. （ Right)
3. Poor visibility in haze days is caused by PM2.5. （ (wrong)
4 coal and oil are renewable ene...
2021-08-28
UV sterilizer PK ozone generator, cure selection difficulties, pure water equipment, ultra pure water equipment manufacturers
Compared with other sterilization and disinfection methods, ultraviolet sterilizer and ozone generator are more widely used in water treatment industry in recent years. Ultraviolet rays can destroy bacterial DNA, and ozone can play a strong role in oxidation. They have their own advantages in steril...
