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Beijing Qinrunze Environmental Protection Technology Co., Ltd. News

Two-Stage DTRO Disc Tube Reverse Osmosis Wastewater Treatment Equipment: Advanced Solution for High-Concentration Wastew

Disc Tube Reverse Osmosis (DTRO) is a cutting-edge membrane separation technology specially developed for complex, high-salinity and heavily polluted wastewater that conventional spiral-wound reverse osmosis cannot handle stably. The two-stage DTRO system, as an upgraded integrated solution, ...

July 3, 2026
Thick Scum Layer in Aerobic Tank of Chemical Wastewater Treatment with Qualified Effluent

Scum floating on the surface falls into two core categories: floating of activated sludge itself (sludge bulking, denitrification flotation) and scum formed by inert impurities plus dead bacterial flocs (sludge aging, abnormal organic loading, flocculation with grease). Chemical wastewater is far ...

July 1, 2026
Why RO Membrane Cleaning Follows Acid Washing Prior to Alkaline Washing

Under working conditions of RO membranes contaminated by composite pollutants consisting of inorganic scaling, organic matter and algae, the unified industrial standard cleaning sequence is acid washing first (to remove inorganic hard scale), followed by alkaline washing (to eliminate colloids, ...

June 26, 2026
Introduction to SBR Process Background

1. What is the SBR process? The SBR process, short for Sequencing Batch Reactor Activated Sludge Process, is a wastewater treatment technology that utilizes microorganisms to operate intermittently in a reactor according to a specific time sequence. Unlike traditional continuous-flow activated ...

April 8, 2026
"20 Years of Excellence in Industrial Wastewater Treatment: Your Reliable Global Partner"

As a 20-year established manufacturer specializing in industrial wastewater treatment equipment, we are committed to providing world-class solutions that prioritize quality, affordability, and innovation. With a proven track record of serving clients across diverse industries, our advanced ...

April 7, 2026
How to clean reverse osmosis membranes: should acid cleaning come before alkaline cleaning or vice versa?

Reverse osmosis (RO) membrane technology has been widely applied in fields such as seawater desalination, wastewater treatment, and industrial wastewater reuse. However, membrane fouling remains a critical factor limiting the long-term stable operation of reverse osmosis systems. During operation, ...

April 3, 2026
DTRO Wastewater Treatment: Efficient Purification for Challenging Effluents

Disc Tube Reverse Osmosis (DTRO) is an advanced membrane technology transforming wastewater treatment, particularly for high-strength industrial and municipal effluents. How It Works: DTRO utilizes specialized disc-shaped membranes with wide flow channels (up to 4mm) to withstand fouling. High...

April 2, 2026
Sewage Treatment: A Vital Solution for Cleaner Water and a Healthier World

Sewage treatment plays a crucial role in safeguarding public health and the environment. This process purifies wastewater, making it safe to reuse or discharge back into nature.The Treatment Process:Primary Treatment: Removes large solids through physical methods like screening and settling...

April 1, 2026
The difference between using hydrolysis acidification + A²O and directly using the A²O process for slaughterhouse wastew

1. Characteristics of slaughterhouse wastewater quality (prerequisite for direct A²O) • High-concentration organic matter: COD 3000–8000 mg/L, BOD 1500–4000 mg/L, B/C≈0.5–0.6 (good biodegradability) • High SS, high oil content: SS 1000–3000 mg/L, animal and vegetable oil >500 mg/L, containing meat ...

March 31, 2026
Two-Stage DTRO Wastewater Treatment: A Game-Changer in Water Purification

The Two-Stage Disc Tube Reverse Osmosis (DTRO) system is a cutting-edge technology revolutionizing wastewater treatment, especially for high-strength effluents like landfill leachate and industrial wastewater.How It Works:Primary Stage: Raw wastewater enters DTRO membranes, removing >85% of ...

March 31, 2026
Wastewater Treatment: Cleaning Water for a Cleaner Future

Wastewater treatment is vital for safeguarding health and the environment. It purifies used water, making it safe to reuse or return to nature. The Process: 1. Primary Treatment: Removes large solids through screening and settling. 2. Secondary Treatment: Bacteria break down organic matter, reducing ...

March 30, 2026
Is the water you drink safe? This technology is quietly eliminating "persistent toxins" from water—catalytic ozone techn

Boiled tap water always carries an indescribable disinfectant odor, while the new filter cartridge of your water purifier starts emitting strange smells after just three months. Occasionally, chemical odors waft from rivers in summer, and news reports frequently expose organic contamination and ...

March 27, 2026
Two-Stage DTRO Wastewater Treatment Equipment

Overview Two-Stage Disc Tube Reverse Osmosis (DTRO) equipment is an advanced membrane separation technology specifically designed for high-concentration wastewater treatment, particularly landfill leachate and industrial effluent. Working Principle The system operates in two sequential stages: Stage ...

March 26, 2026
Newly Issued Commentary on the Ecological Environment Code!

If the previous environmental protection law was a "one-man army," then this newly enacted "Ecological Environment Code" is a "corps of troops,"堪称 the "Civil Code" of the environmental protection field. It is the world's first comprehensive code in the field of ecological environment, specifically ...

March 24, 2026
Two-Stage DTRO Wastewater Treatment

Two-Stage Disc Tube Reverse Osmosis (DTRO) is an advanced membrane technology designed for treating high-concentration wastewater, particularly landfill leachate.How It Works:First Stage – Raw wastewater undergoes initial reverse osmosis filtration, removing most contaminantsSecond Stage – Permeate ...

March 24, 2026
Common issues during the sludge age adjustment process

Safety Precautions for the Startup Operation of a Wastewater Treatment Plant 1. Purpose The sludge retention time (SRT) is a core control parameter in the activated sludge system, directly determining microbial population structure, pollutant removal efficiency, and sludge characteristics. In ...

March 23, 2026

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