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Beijing Qinrunze Environmental Protection Technology Co., Ltd. News
50 Frequently Asked Questions about Reverse Osmosis
1. How Often Should a Reverse Osmosis System Be Cleaned? The RO system shall be cleaned when the normalized flux drops by 10–15%, the salt rejection rate decreases by 10–15%, or the operating pressure and inter-stage differential pressure rise by 10–15%. The cleaning frequency is directly related to ...
June 22, 2026
Version 1 (Short for product catalog / social media)
Our integrated wastewater treatment equipment is tailor-made for Southeast Asia markets including Malaysia, Vietnam and Indonesia. Adopting energy-saving MBR/A²/O technology, the compact containerized unit cuts land occupation and power consumption, perfectly fitting local high temperature & humid ...
June 18, 2026
Removal of Suspended Solids — Coagulation, Sedimentation, and Filtration: Intercepting Fine Particles for Crystal Clear Water
I. Characteristics of Suspended Solids (SS) in Secondary Effluent Suspended solids (SS) in secondary treatment effluent exhibit the following characteristics: Composition: Primarily consists of biological flocs with particle sizes ranging from several millimeters down to 10 μm, along with some ...
June 16, 2026
Professional Introduction of Two-Stage DTRO Wastewater Treatment Equipment (For Southeast Asian Markets)
Version 1: Formal Brochure & Business Proposal (Formal & Detailed, for Tender, Client Negotiation & Official Cooperation) Two-Stage Disc Tube Reverse Osmosis (DTRO) Wastewater Treatment System 1. Company Overview We are a professional manufacturer specializing in the R&D, production, customization ...
June 15, 2026
Nine Measures to Improve the Treatment Performance of A²/O Process
In the conventional A²/O process, efficient nitrogen removal usually comes with poor phosphorus removal, and vice versa, making it difficult to achieve excellent simultaneous nitrogen and phosphorus removal. Accordingly, optimized measures are proposed to enhance the overall treatment efficiency of ...
June 11, 2026
Proper Usage Guide for RO Reverse Osmosis Membranes: Purify Water & Extend Equipment Lifespan
In water treatment systems, the RO reverse osmosis membrane serves as the core filtration component. It effectively removes dissolved salts, bacteria, heavy metals and other contaminants from water to guarantee safe drinking water. However, improper use may lead to membrane fouling or damage, ...
June 8, 2026
**Two-Stage DTRO Wastewater Treatment System: A Concise Overview**
Core Mechanism: 1. Primary Stage: Raw wastewater enters the first DTRO unit, where high-pressure pumps force water through densely packed membrane channels, rejecting solids, dissolved salts, and organic matter. The concentrate stream is recycled back for further treatment. 2. Secondary Stage: The ...
June 1, 2026
Seawater Desalination Equipment: Unlock a Flexible New Water Supply Solution
On January 20, 2026, the United Nations University Institute for Water, Environment and Health released the report Global Water Bankruptcy: Surviving Beyond Hydrological Carrying Capacity in the Post-Crisis Era. It pointed out that about 2.2 billion people still lack safely managed drinking water, 3...
May 25, 2026
Wastewater Treatment
Wastewater treatment is very important for protecting our environment and water resources. It removes dirt, harmful substances and pollutants from used water. First, large rubbish and solids are filtered out. Then bacteria and chemicals clean the water further, breaking down waste. After several ...
May 22, 2026
What Does Floc Structure Tell You? Activated Sludge Biological Phase Observation Series · Part 2
During the operation of wastewater treatment systems, the size, shape and compactness of activated sludge flocs, as well as the proportion and growth status of zoogloeal bacteria and filamentous bacteria, can well reflect the operating condition of wastewater treatment. The structure of sludge flocs ...
May 15, 2026
Industrial Wastewater Treatment Equipment
Industrial wastewater treatment equipment plays a vital role in modern manufacturing and environmental protection. It is specially designed to purify polluted water discharged from chemical, food, textile and other industrial processes. The equipment adopts a combined process of physical, chemical ...
May 14, 2026
Full Process of Wastewater Treatment Plant: From Influent to Discharge Standard, Step-by-Step Explanation
A modern wastewater treatment plant operates as a closed-loop water purification assembly line. Urban domestic sewage and industrial wastewater converge through pipe networks, undergo multi-stage purification, and finally turn into qualified clean water for discharge or reclaimed reuse.This article ...
May 12, 2026
Complete Analysis of 26 Classic Water Treatment Knowledge Points Basic Concepts in Water Treatment Systems: TDS, SDI, LSI, Ksp
TDS: Total Dissolved Solids, generally approximate to mineralization degree. SDI: Silt Density Index, an indicator for evaluating the effect of system pretreatment. The influent requirement for reverse osmosis (RO) units is SDI < 5. LSI: Langelier Saturation Index, used to judge the scaling tendency ...
May 11, 2026
Common Problems and Countermeasures in Operation and Management of Wastewater Treatment: Causes and Solutions of Secondary Sedimentation Tank Sludge Floating
The secondary sedimentation tank is one of the core structures of the activated sludge wastewater treatment system, undertaking the key function of mud-water separation. However, sludge floating frequently occurs in the secondary sedimentation tank during actual operation, leading to deterioration ...
May 11, 2026
Operation and Management of Anaerobic Equipment: A Comprehensive Guide from Startup to Safety
English Translation From completion of construction to stable operation, the anaerobic biological treatment system requires rigorous commissioning and start-up, meticulous daily management, and strict safety protection. Improper operation and management will not only impair treatment efficiency but ...
May 9, 2026
Activated Sludge Process in Wastewater Treatment
1. Activated Sludge It is a dense cluster of aerobic bacteria and microorganisms forming yellowish-brown flocs, specifically designed to consume pollutants in wastewater. 2. Aeration in the Aerobic Tank The blower continuously supplies air to maintain high oxygen levels in the water, ensuring the ...
April 27, 2026
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