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Welcome to Qingdao Conqinphi Environmental Technology Group Co., Ltd. – a leading manufacturer of advanced environmental solutions since 2015. Our Zero-Discharge Wastewater Recycling System for Textile Dyeing Process is engineered to achieve 100% water reuse, eliminating any liquid discharge while recovering high-quality water for production. With over 10,000 square meters of manufacturing facility and an annual export value exceeding US$10 million, we deliver reliable, cost-effective systems that meet the strictest environmental standards.
This system is specifically designed for the textile dyeing industry, where large volumes of heavily polluted wastewater are generated. By integrating advanced membrane filtration, evaporation, and crystallization technologies, we transform wastewater into clean water and solid by-products, enabling a fully circular water loop. Our solution not only helps you comply with stringent discharge regulations but also reduces freshwater consumption and operational costs.
Below you will find detailed technical specifications, key advantages, and the unmatched support we provide – all backed by our ISO9001, ISO14000, and OHSAS18001 certified production processes.
Key Features & Benefits
- Zero Liquid Discharge (ZLD): 100% of wastewater is treated and recycled, leaving zero effluent to the environment.
- High Water Quality: Treated water meets or exceeds process water standards for dyeing operations, ensuring no impact on product quality.
- Energy-Efficient Design: Our patented membrane system reduces energy consumption by up to 30% compared to conventional ZLD systems.
- Compact Footprint: Space-saving modular design fits easily into existing plant layouts.
- Fully Automated Control: PLC-based system with remote monitoring capability minimizes manual intervention.
- Robust Material Construction: All wetted parts are made of corrosion-resistant stainless steel (304L or 316L) for long service life.
- Resource Recovery: Valuable salts and dyes can be crystallized and reused or sold, creating additional revenue streams.
- Low Maintenance: Self-cleaning membrane modules and pre-treatment steps reduce fouling and downtime.
Technical Specifications (Standard Model)
| Parameter | Value |
| Treatment Capacity | 10 – 500 m³/day (customizable) |
| Water Recovery Rate | ≥ 99.5% (100% with evaporation) |
| Feed Water Quality | COD: ≤ 3000 mg/L, TDS: ≤ 8000 mg/L |
| Treated Water Quality | COD < 30 mg/L, TDS < 100 mg/L, Turbidity < 1 NTU |
| Operating Temperature | 15 – 45 °C |
| Power Consumption | 2.5 – 5.5 kWh/m³ of treated water |
| Membrane Type | UF + RO + MVR evaporator |
| Control System | PLC (Siemens or equivalent) with HMI touchscreen |
| Certification | ISO9001, ISO14000, OHSAS18001 |
Why Choose Our Zero-Discharge System?
Our system is the result of years of research and field experience in treating textile dyeing wastewater. Unlike generic systems, we customize each unit to match your specific wastewater characteristics, ensuring maximum efficiency and reliability. The combination of ultrafiltration (UF), reverse osmosis (RO), and mechanical vapor recompression (MVR) evaporation allows us to achieve true zero discharge even in the most challenging conditions.
Our clients have reported up to 40% reduction in overall water costs after installing our system, alongside full compliance with local environmental regulations. The system's modular design also makes future capacity expansion simple and cost-effective.
We take pride in our after-sales service: every system comes with comprehensive installation guidance, operator training, and a 12-month warranty. Optional extended warranties and remote monitoring packages are available upon request.
Trust & Reliability
Qingdao Conqinphi Environmental Technology Group is a trusted partner for global textile manufacturers. With a factory spanning 10,000–30,000 square meters and a team of 201–300 employees, we have the capacity to deliver large-scale projects on time. Our annual export value of US$10–50 million reflects the confidence our international clients place in us. We serve markets across North America, South America, Europe, Asia, Africa, and Oceania.
Our products are manufactured under strict quality management systems (ISO9001, ISO14000, OHSAS18001) ensuring every component meets the highest standards. We also hold additional certifications such as HACCP, SA8000, and others, demonstrating our commitment to quality, safety, and social responsibility.
By choosing our Zero-Discharge Wastewater Recycling System, you are investing in a sustainable future for your textile operations. Contact us today to discuss your specific requirements and request a customized proposal. Let us help you achieve 100% water reuse and turn your wastewater challenge into a valuable resource.
Frequently Asked Questions (FAQ)
Q1: Is the system truly capable of 100% water reuse?
A: Yes. Our system combines membrane separation and evaporation/crystallization to recover all water as high-quality distillate. The small volume of concentrated brine is crystallized into solid salt, leaving zero liquid discharge.
Q2: What is the typical payback period for this system?
A: Depending on local water costs and discharge fees, many clients achieve payback within 2–3 years. We can provide a tailored ROI analysis based on your site data.
Q3: Can the system handle varying wastewater compositions from different dye batches?
A: Yes. Our pre-treatment and membrane design are engineered to tolerate fluctuations in pH, color, and organic load. The PLC adjusts operating parameters automatically to maintain stable performance.
Q4: What are the solid by-products, and can they be reused?
A: The solids mainly consist of salts and some dye residues. They can be further purified for reuse in the dyeing process (e.g., salt recovery) or sent to specialized treatment. We offer optional salt recovery modules.
Q5: How much floor space is required for installation?
A: The footprint depends on capacity. For a typical 100 m³/day system, the required area is approximately 200–300 m², including all pretreatment, membrane, and evaporation units. Our team will conduct a site survey to optimize layout.
Q6: Do you provide installation and training?
A: Absolutely. We offer on-site installation supervision and comprehensive training for your operators. Remote technical support is also available 24/7.
Q7: What certifications does the system comply with?
A: The system is designed and manufactured under ISO9001, ISO14000, and OHSAS18001 certified processes. Additional certifications such as CE, ATEX, or others can be provided as required – please consult with our sales team.
Q8: Can I see a reference installation or visit your factory?
A: Yes, we have multiple reference installations globally. We also welcome customers to visit our factory in Qingdao, China, to inspect our manufacturing capabilities and discuss your project in person.
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