Jiangsu Shuangfu Environmental Protection Equipment Co., Ltd

Integrated water treatment system solution providerOne-stop standardized water treatment equipment manufacturing enterprise
Consultation Hotline:+86 18559799562

Double membrane water reuse equipment

Provide one-stop solutions from design, production, and installation

  • Processing capacity:0-5t/D, 5-20t/D, 20-50t/D, 50-100t/D, 100-200t/D, 200-500t/D
  • Material:UPVC/SS304/SS316
  • Recovery rate:95%
  • Sewage type:Paper making wastewater, rainwater and waste liquid wastewater, electroplating wastewater, printing and dyeing wastewater, industrial wastewater, electronic cleaning wastewater
Free design proposal
ISO 9001 certification
ISO 4001 certification
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Consultation hotline +86 18559799562
  • Product Details
  • after-sales service
  • Brand Advantage
  • Scope of application

1、 Technical requirements: Ultrafiltration filtration method:

  1. Full flow filtration (opening the inlet valve, closing the concentrated water valve, and opening the production valve to produce only water without impurities) is commonly used for household tap water filtration, but it is not effective in industry as the membrane will quickly clog and shorten its lifespan.
  2. Cross flow filtration (open the inlet valve, open the concentrated water valve, open the produced water valve, adjust the concentrated water valve to achieve a ratio of 9:1 between produced water and concentrated water discharge. If there are too many impurities in the water quality, the ratio needs to be adjusted to 7:3, which will extend the lifespan of the membrane.
    2、 Membrane workflow
  3. Reset all valves (all valves closed).
  4. Positive washing (open the inlet pump and inlet valve, only open the upper valve, close the other valves, so that all water is discharged from the concentrated water outlet. The general cleaning time is 20-60 seconds, and the regular cleaning time is 30 seconds, which can be freely set)
  5. Water production (first open the water production valve, close the upper valve, open the inlet valve, adjust the concentrated water valve, and do not move until the desired ratio is reached. Set the water production time to CNPUMP. Pump three-phase asynchronous motor model: rated power: W, rated voltage: V, rated speed: r/min, rated frequency: Hz, rated current: A. Shell protection level: connection method: insulation level: working system: 1. Total weight: Kg. Factory date: 30 minutes for the southern pump. Other valves can be closed. The water production time can be set by oneself.)
  6. Air scrubbing (open upper valve, open intake valve, close other valves, clean for 60 seconds, regular for 30 seconds, freely set)
  7. Backwash: First, backwash up (open the upper row valve, open the backwash inlet valve and backwash water pump, close all other valves, generally cleaning time 20-60 seconds, regular 30 seconds, freely set), then backwash down (open the lower row valve, open the backwash inlet valve and backwash water pump, close all other valves, generally cleaning time 20-60 seconds, regular 30 seconds, freely set)
  8. The above process is repeated to shut down for chemical cleaning (when the membrane flux decreases by 20% or the transmembrane pressure difference exceeds 1 kg). Cleaning is carried out monthly according to the membrane condition. Alkaline cleaning (sodium hypochlorite 200PPM, sodium hydroxide 500PPM) is used to remove organic pollutants such as bacteria and microorganisms. Acid cleaning (31% hydrochloric acid, 400PPM) is used to remove inorganic substances on the surface of the ultrafiltration membrane, such as iron scale, calcium magnesium scale, etc. Normally, the membrane is washed four times a month. Each time, the chemical cleaning valve and cleaning pump need to be shut down for cleaning. The other valves are closed. After the concentrated water valve has water coming out, the cleaning pump is stopped and the chemical cleaning valve is closed. The membrane is soaked for 60 minutes to 120 minutes, and then the backwash pump is turned on until the water becomes neutral.

Technical requirements for water reuse in double membrane method:
CNPUMP pump three-phase asynchronous motor V rated voltage: W rated power: model: A rated current: Hz connection method: rated frequency: r/min shell protection level: rated speed: 316L seamless pipes are used for the pink pipes, and the fittings on the pipes are connected to the water in Kg total weight:

  1. Working system: Insulation level: JB/T1009-2007. The contact components of the southern pump are all made of 314L material, with a withstand voltage of P=4.0Mpa.
  2. The white pipes are all made of UPVC material, with a pressure resistance of P=1.6Mpa, and the interfaces are connected with loose flanges.
  3. Reverse osmosis, ultrafiltration, and chemical backwashing are separate modules, and the connecting pipes between modules are installed on site according to the actual situation.
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after-sales service
1. Archive exclusive data files, including all relevant information from design to production and operation, and keep detailed records of all equipment after-sales service reports for more than 15 years.
2. Lifelong telephone follow-up for equipment operation, maintenance, and repair.
3. Remind customers via SMS and phone to replace consumables.
4. Track the maintenance status of customers who have had their equipment repaired.
5. Remind customers to send back equipment operation records, and the technical department of SHUANGFU Environmental Protection will conduct technical analysis on the data to assess the overall system operation status and take preventive measures.
6. Propose a solution for equipment malfunctions within 30 minutes.
details
1. Upon receiving a notification of equipment malfunction and repair, propose a solution within 30 minutes.
2. The Customer File Management Center establishes exclusive customer files, which are updated and managed by dedicated after-sales professionals at any time. They conduct after-sales follow-ups on equipment and conduct follow-up visits after equipment maintenance to determine the efficiency and satisfaction level of equipment maintenance.
3. Provide system documentation for equipment design, manufacturing, verification, and operation to achieve traceability in equipment management.
4. After-sales professionals proactively conduct regular monthly phone follow-ups, record relevant data, provide methods to reduce operating costs at any time, remind of maintenance and consumable replacement, and other related matters, offer preventive maintenance and effective improvement and optimization suggestions, and can assist in transformation and upgrading. Professional engineers conduct regular on-site follow-ups to make correct judgments on the overall system operation, and prevent potential issues from arising.
5. Train at least 2-3 equipment operation and management personnel. After training, conduct skill confirmation and assessment. Those who pass the exam can take up their positions. Generally, our company requires the customer to arrange 1-2 people to participate in the entire installation process to ensure that the operators have a comprehensive understanding of the system.
6. For any questions or suggestions regarding the equipment usage, abnormal phenomena, special requirements, etc., customers can call the after-sales service hotline at +86 18559799562.
7. Equipment comes with consumable spare parts, and the company's warehouse is well-stocked with commonly used consumable accessories. We will promptly provide maintenance parts and materials to the site to address any issues.
8. Provide a system for equipment inspection and management, and guide the establishment of standardized management systems, management plans, relevant processes, and regulations for purified water.
We will tailor-make a construction plan based on your specific needs! All information will be retained for 15 years to facilitate future upgrades and renovations!

"Design Advantages":
1. One-on-one professional service, free on-site site survey, considering the placement area and entry space, and free testing of raw water quality.
2. Understand the customer's daily water demand, instantaneous water consumption, water quality requirements, as well as their production process and industry characteristics.
3. A professional team collaborates on the design, integrates on-site inspections by one-on-one service personnel, and offers one-stop services for water treatment solutions.
4. Intelligent design, precise control, high degree of automation, automatic forward/reverse washing/operation of each unit, linkage protection, alarm indication, 4-20ma data open, remote transmission to DCS central control system, truly achieving unattended operation.
5. Conduct segmented testing according to process requirements, measuring parameters such as conductivity, resistivity, pH, ORP, temperature, flow rate, velocity, and pressure, to ensure that the product water in each process step is qualified without contaminating the finished water in subsequent stages. Emphasis should be placed on process control.
6. Design products suitable for customers based on the principle of balancing comprehensive input costs and usage costs.

※SHUANGFU Environmental Protection Brand "Production Advantages":
1. All core components are imported, and we have established good long-term cooperative relationships with numerous international brands such as DOW, Hydranautics, GE, Siemens, Rohm and Haas, Grundfos, Rosemount, Seiko, Schneider, etc. This ensures reliable product quality.
2. Suppliers undergo product assessment, and unqualified suppliers with poor quality and service are eliminated, while preferred suppliers are selected and entered into the qualified supplier system.
3. Strictly implement the quality management system, with quality as the top priority, and conduct incoming material appearance and performance inspection -- production process inspection -- complete machine quality inspection.
4. Production personnel are assigned corresponding numbers for production, grouped and scheduled for production, with a division of responsibilities based on a responsibility system. Performance evaluation and strong traceability are established.
5. Conduct trial operation inspection and electrical jog test before the shipment of the entire machine to ensure that only qualified products are delivered to customers.

Manufacturing industry: automotive glass, steel, paper, textile, etc
Power industry: boiler, thermal power generation, cooling cycle, etc
Catering industry: beverage, food, dairy, drinking water, hotels, etc
Electroplating industry: coating, lighting, cooling, metal plating, LED lights, etc
Optoelectronic industry: photovoltaic photovoltaic lighting, new energy LED lights, etc
Electronics industry: electrical chips, circuit boards, microcontrollers, electronic components, etc
Pharmaceutical industry: Medical devices, oral liquids, finished drugs, biologics, etc
Energy industry: oxide semiconductor silicon materials, polycrystalline silicon metal extraction, etc
◆ Cosmetics industry:
Pure water for skincare production, shampoo production, hair dye production, toothpaste production, and hand sanitizer production
Food, beverage, and purified water industries:
Production of water for food production, beverage production, and purified water
◆ Electronics industry:
Aluminum foil cleaning; Electronic tube spraying and liquid preparation; Cleaning, sedimentation, wetting, film washing, and neck cleaning of the phase display tube glass shell;
LCD screen cleaning and liquid preparation: water for cleaning and preparing silicon wafers of transistors and integrated circuits.
◆ Battery industry:
Pure water for battery production, pure water for lithium battery production, pure water for solar cell production
Pure water for the preparation of concrete admixtures
High purity water for glass coating, water for cleaning glass products, and water for cleaning lamps
◆ Textile printing and dyeing industry:
Pure water for printing and dyeing auxiliary preparation, pure water for wet towel, and pure water for facial mask
Pure water for ultrasonic cleaning
Coating industry: pure water for coating preparation, electroplating preparation cleaning water, electrophoretic paint preparation cleaning pure water

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Service Hotline:
86 18559799562

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