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Beijing Qinrunze Environmental Protection Technology Co., Ltd. News

Let's talk about hydrolysis and acidification tanks!

In the big family of sewage treatment, hydrolysis and acidification tanks are quite important members. Today, let's talk about hydrolysis acidification tanks in detail, from their classification, principles, removal efficiency, and precautions during operation, and explain them to everyone in one go...

April 7, 2025
What's wrong with the floating mud in the secondary sedimentation tank? How to solve it?

Recently, many friends have asked me about the problem of floating mud in the secondary sedimentation tank. Today, let's have a good chat. Floating mud in the secondary sedimentation tank is not a small matter, it directly affects water quality and may even cause chaos in the entire sewage treatment ...

March 31, 2025
Reasons and treatment methods for high SV30 and non settling sludge!

Activated sludge SV30 does not settle, what's going on? what to do? Recently, some friends have encountered the problem of activated sludge SV30 not settling and the value is particularly high when treating sewage, and their heads are getting bigger. Today, let's talk about what's going on and how ...

March 28, 2025
What are TOD, TOC, COD, and BOD, and what is their relationship?

In the water treatment industry, TOD BOD COD is a professional term. Do you know what it means? If you don't know, it's embarrassing to say you know about water treatment~There are two types of comprehensive indicators that indicate the content of organic matter in water. One is the indicator ...

March 27, 2025
Ozone catalytic oxidant: a magical assistant for sewage purification

On the big stage of sewage treatment, ozone catalytic oxidants are a "star player". Today, let's talk about what kind of divinity it is, what its strengths are, and what direction it will develop in the future. 1, Classification of Ozone Catalytic Oxidants Simply put, ozone catalytic oxidants can be ...

March 26, 2025
How to improve denitrification efficiency?

In the battle of sewage treatment without gunpowder, there are many magical tricks to make denitrification efficiency skyrocket. Let's take a look! There are considerations for carbon source 'feeding' Denitrifying bacteria are like a group of picky and cute little diners, they need to find the right ...

March 22, 2025
[Dry goods] Detailed explanation of cyanide cracking process and operation for cyanide containing wastewater!

Overview of Cyanide Cracking Process Cyanide containing wastewater has a wide range of sources and is generated in the production processes of industries such as electroplating, mineral processing, and chemical engineering. The cyanide in these wastewater is a highly toxic substance that, if ...

March 21, 2025
Reasons and solutions for high SVI of activated sludge!

The sludge volume index (SVI) is an indicator for measuring the settling performance of activated sludge. A high SVI usually means poor settling performance of sludge and is prone to problems such as sludge swelling. The following is the analysis of the reasons and solutions: cause analysis ...

March 19, 2025
The Mechanism and Solutions of Sludge Swelling

1, The mechanism of sludge expansion Sludge swelling is a common abnormal phenomenon in activated sludge process, mainly caused by the following reasons: Excessive reproduction of filamentous bacteria -The dominant factor is the proliferation of filamentous bacteria (such as Fusarium graminearum, ...

March 18, 2025
The role of activated sludge in wastewater treatment

The role of activated sludge in wastewater treatment is a dynamic system of complex microbial ecosystems and physical and chemical processes, and its core mechanism can be deeply analyzed from micro metabolism to macro process level 1, The collaborative metabolic mechanism of microbial communities ...

March 15, 2025
[Dry goods] Operation of sewage treatment plant after long-term water outage!

Wastewater treatment method after factory shutdown and water inflow Equipment maintenance: Turn off the sewage lifting pump, mixer and other operating equipment to prevent damage caused by idling, clean, lubricate and inspect them, and replace worn parts in a timely manner. Check whether the ...

March 13, 2025
【 Dry Goods 】 Precautions and Countermeasures for Sludge Domestication in Sewage Treatment Plants in Cold Regions

At present, the inoculation and commissioning of activated sludge are being carried out in the extremely low temperature environment of minus 10 ℃ in Harbin during winter, and special attention should be paid to maintaining microbial activity, controlling system temperature, and optimizing the ...

March 12, 2025
What are TOD, TOC, COD, and BOD, and what is their relationship?

There are two types of comprehensive indicators that indicate the content of organic matter in water. One is the indicator represented by oxygen demand (O2) equivalent to the amount of organic matter in water, such as biochemical oxygen demand (BOD), chemical oxygen demand (COD), and total oxygen ...

March 11, 2025
Summary of Debugging and Operation of Low Oxygen Biochemical System

Principles of Low Oxygen Biochemistry Low oxygen biochemistry mainly achieves organic matter degradation and nitrogen and phosphorus removal by controlling the dissolved oxygen (DO) concentration in the reaction environment (usually 0.2-0.5mg/L) and utilizing the metabolic activity of microorganisms ...

March 10, 2025
How to calculate the addition of nutrients in sewage treatment?

The main purpose of adding nutrients (such as nitrogen, phosphorus, etc.) in sewage treatment plants is to provide sufficient nutrition for microorganisms to maintain their normal metabolism and treatment efficiency. The following are the calculation basis, formula, and precautions for the dosage: 1...

March 8, 2025
【 Dry Goods 】 Inoculation and domestication plan for activated sludge

1, Purpose This manual aims to provide detailed operational guidance for the domestication of activated sludge, enabling it to adapt to specific wastewater quality, efficiently degrade pollutants in wastewater, and ensure the stable operation of sewage treatment systems. Scope of Application ...

March 7, 2025

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