News Updates-Yuanlai Water Treatment-第65页

News Updates

17 Aug
Explain clearly at one time what COD, BOD and TOC are?

There are many types of organic substances in natural water that cannot be detected separately; only the total amount of organic matter can be tested. The detection indicators for total organic matter include: Chemical Oxygen Demand (COD), biological oxygen demand (BOD), and total organic carbon (TOC). Now let's talk about what COD, BOD and TOC are. Chemical Oxygen Demand (COD) refers to the amount of oxidant consumed when treating water samples under certain conditions with a certain strong oxidant, with the unit being mg/L. It is an indicator representing the content of reductive substances in water. In addition to various organic substances, the reducing substances mentioned in the book also include nitrite, sulfide, ferrous salt, etc., but organic substances account for the vast majority. Therefore, chemical oxygen demand (COD) is often used as an indicator to measure the amount of organic matter in water. There are two methods for COD determination: one is potassium dichromate

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15 Aug
What's abnormal about unfiltered water

Are you still drinking unfiltered water? Question: Is untreated water containing some impurities such as sand, suspended matter, etc. a pure substance after 1. Adding alum, 2. Sedimentation, 3. Filtration, 4. Adding chlorine gas? Answer: A pure substance refers to a substance that contains only one compound or element. The pure substance you want to obtain here is water, so water cannot contain any other substances! Alum can remove sand and suspended matter, but chlorine only kills and does not remove them, so it is definitely not a pure substance! The following is the answer from Beijing Yuanlai! Raw water: It refers to water that has not been treated. In a broad sense, the water that enters the water treatment process before it is also called the raw water of that water treatment process. For example, water sent from a water source to a clarifier for treatment is called raw water. Tap water/river water/groundwater

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15 Aug
How to clean reverse osmosis equipment

Beijing Yuanlai answers for you

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15 Aug
The water quality of the ultrapure water equipment does not meet the standards

Common causes include

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15 Aug
Why do reverse osmosis membranes often get clogged

Beijing Yuanlai will give you a detailed introduction

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