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Beijing Qinrunze Environmental Protection Technology Co., Ltd. News

Piping Selection Guide for Reverse Osmosis Equipment – Key Points for General Users

# Why Piping for Reverse Osmosis Equipment Differs From Ordinary Water‑Supply Pipes (For General Users’ Reference) ## Piping Installation and Material Selection for Reverse Osmosis Pure‑Water Equipment Material selection shall take both internal and external factors into consideration. Internally, ...

August 24, 2026
Is Saccharin Wastewater Easy to Treat? Treatment Methods Overview

I. Why Is It Difficult to Treat? Four Core Pain PointsExtremely High COD and Poor BiodegradabilityThe wastewater contains benzene rings, anthranilic acid, and saccharin parent organic compounds with stable molecular structures that ordinary microorganisms cannot degrade. The raw wastewater has ...

August 11, 2026
Key Operational Considerations for Wastewater Treatment Plants in Summer

In summer, elevated wastewater temperatures cause microbial oxygen consumption to surge and make microbial communities prone to aging, frequently leading to problems such as ammonia nitrogen exceedance, total phosphorus exceedance, sludge bulking, and floating sludge and foam. To address these ...

August 6, 2026
Causes and Solutions for High Total Phosphorus in Slaughterhouse Wastewater Treatment

Slaughterhouse wastewater is characterized by high suspended solids, high grease content, high organic load, and elevated total phosphorus levels. Exceeding discharge limits for total phosphorus (TP) is the most common and persistent challenge faced by slaughterhouse wastewater treatment plants. The ...

August 5, 2026
Two-Stage DTRO: The Ultimate Solution for Zero Liquid Discharge & Coal Chemical Wastewater in Indonesia

Indonesia's Industrial Water Challenge Demands a Proven AnswerIndonesia is undergoing rapid industrialization. From coal gasification plants in Kalimantan and Sumatra to expanding chemical processing zones across Java, one critical challenge keeps plant managers up at night: how to treat high...

August 4, 2026
Differential Pressure, Lifespan & Precision: The "Golden Triangle" of Filter Performance Evaluation

In the previous two articles, we introduced the three core filtration mechanisms and the differences between surface filtration and depth filtration media. Now, when you face a filter product, how do you judge its performance? How do you determine when to replace the filter element? This requires ...

August 3, 2026
Differences among Biofilm Process, Contact Oxidation, MBBR and BAF

## 1. Biofilm Process Is Not a Single Tank, but a Biomass Retention Mode In the activated sludge process, microorganisms mainly exist in flocs suspended in water, and sludge return is adopted to sustain biomass inside the system. For the biofilm process, microorganisms attach to the surface of ...

July 29, 2026
The Unsung Activated Sludge: The Secret to Cleansing Wastewater

Follow us and make steady progress every day. Keep going! In wastewater treatment, filamentous bacteria outbreaks are a major headache — once they take hold, the situation spirals out of control. To most people, sludge is nothing but filthy, malodorous industrial waste, the excess "trash" left over ...

July 27, 2026
Biological Phase & Operational Status Judgment – Activated Sludge Microscopic Examination (Part IV)

I. Understanding Activated Sludge Floc Structure The size, shape, compactness of activated sludge flocs, as well as the ratio and growth status of zoogloeal bacteria and filamentous bacteria constituting flocs, can well reflect wastewater treatment performance. Microscopic observation of floc ...

July 24, 2026
Two-Stage DTRO Disc Tube Reverse Osmosis Industrial Wastewater Treatment System

Disc Tube Reverse Osmosis (DTRO) has become a reliable membrane technology for tackling difficult industrial wastewater and landfill leachate. Benefiting from its unique open flow channel structure, DTRO creates strong turbulent flow inside membrane stacks, delivering outstanding anti-fouling ...

July 22, 2026
Chemicals for Reverse Osmosis Systems: Coagulants, Scale Inhibitors, Biocides, Reducing Agents — Complete Breakdown of D

To maintain stable operation of a reverse osmosis (RO) system, auxiliary chemicals are indispensable alongside well-designed membranes and process layouts. These include coagulants, scale inhibitors, biocides, reducing agents, pH adjusters, each with a designated dosing location and unique function. ...

July 20, 2026
Microbial Community of Activated Sludge Process and Sludge Formation Mechanism Series on Application of Wastewater Treat

I. Overview of Wastewater Biological Treatment Systems Modern biological wastewater treatment is generally divided into three stages: Primary Treatment (Physical Treatment): Bar screen interception, primary sedimentation tank Secondary Treatment (Biological Treatment): Aeration tank, final ...

July 13, 2026
Why RO Membranes Require Acid Cleaning First Followed by Alkaline Cleaning, and Can the Sequence Be Reversed?

For chemical cleaning of reverse osmosis (RO) membranes, the sequence of acid cleaning first then alkaline cleaning must be strictly followed. This order cannot be reversed under any circumstances; otherwise, contaminants will solidify and membrane fouling will be aggravated. The reasoning can be ...

July 9, 2026
Wastewater Treatment Equipment for Southeast Asia Market

Our integrated wastewater treatment systems adopt mature A²/O biochemical and DTRO membrane technologies, tailor-made for Southeast Asia’s humid, high-temperature climate, diverse industrial wastewater and tight local emission standardsbluewaterl.... Containerized compact design saves construction ...

July 8, 2026
A²/O Process – Brownish Yellow Viscous Foam (In-depth Analysis)

I. Typical Phenomena The foam is brownish yellow/tawny, highly viscous, hard to break and accumulates in large volumes on the aeration tank surface. Meanwhile, the activated sludge appears yellowish with fine flocs. II. Root Causes (Sorted by A²/O Operating Conditions) 1. Excessive Organic Loading ...

July 7, 2026
DTRO Wastewater Treatment System: Efficient Solution for High-Concentration Effluents

The Disc Tube Reverse Osmosis (DTRO) system is a specialized membrane technology designed to treat high-salinity, high-pollutant wastewater that conventional reverse osmosis cannot handle efficiently. Its unique disc-tube module structure allows operation at pressures up to 120 bar, making it ideal ...

July 6, 2026

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