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                      An iron and steel group wastewater treat and reuse demonstration project Projects

                       

                        Introduction
                      Tianjin Rockcheck Steel Company is the largest private enterprises, which ranks the 159th in top 500 Chinese enterprises , with annual sales value of 28.9 billion. To resolve the long-troubled water shortages and poor water quality issues, Rockcheck began to construct sewage treatment and reuse projects from October 2007.

                       Scope Of  Work
                      MOTIMO was responsible for the (CMF + RO) system design, equipment manufacturing , installation and commissioning works construction of the project.

                       General Information
                      Designed scale: UF system 72,000m3/d, RO system 50,000m3/d, which is currently China's largest double-membrane wastewater treatment and reuse project.

                      Membrane Info
                      CMF system uses MOTIMO UOF4 membrane module, which is composed of 33 skids MT-CMF-50 (30 use 3 standby), each skid has 50 membrane modules, totally 1650 outside-in hollow fiber membrane modules, which are all made of PVDF and the pore size is 0.03μm, each runs independently producing constant flow of water. The system’s maximum treatment capacity is 72,000 m3/d.
                      The project uses UOF-4 PVDF membrane module produced by MOTIMO, the effective membrane area is 40m2, the average flux of membrane system is 53LMH (peak instantaneous flux is 65LMH), and the product water’s quality is in line with the requirements of the reverse osmosis water.
                       

                       Process
                      raw water’s quality: integrated river discharge wastewater + Gegu town domestic wastewater + Rockcheck Steel Company steel wastewater.
                      Produced water’s quality : achieve the 1st RO desalination water standard
                      Produced water’s application: Tianjin Rockcheck Steel Company steel production water
                      The system can effectively remove impurities, reduce turbidity, suspended solids and colloidal materials, and reduce pollution index (SDI), to maximizedly guarantee the safe operation of reverse osmosis systems, The produced water of CMF system can reach the following targets:
                      Produced water’s turbidity: ≤ 0.2NTU
                      SDI:≤ 3
                      SS: ≤ 1 mg/L

                      Project

                      Raw water

                      Scale
                      ( T/D)

                      Process

                      Application

                      Time

                      A hospital in Tianjin
                      Wastewater treatment project

                      Hospital
                      wastewater

                      500

                      MBR

                      Reach the discharge standard

                      03.05

                      A Subsidiary Hospital of a University  Wastewater treatment project

                      Hospital
                      wastewater

                      500

                      MBR

                      Reach the discharge standard

                      07.10

                      An industrial park in Tianjin
                      MER reclaimed water reuse project

                      Comprehensive
                      Wastewater

                      30,000

                      MBR

                      Landscape Irrigation + Miscellaneous water

                      07.06

                      A  Real Estate InvestmentCompany
                      Domestic sewage treatment project

                      Domestic sewage

                      4,500

                      MBR

                      Landscape Irrigation

                      09.09

                      A University
                      Domestic sewage treatment project

                      Domestic sewage

                      500

                      MBR

                      Landscape Irrigation + Domestic Miscellaneous water

                      06.04

                       A Real Estate Development Company Domestic sewage treatment project

                      Domestic sewage

                      2,000

                      MBR

                      Domestic Miscellaneous water

                      08.07

                      A Oily Water Treatment Station in Tianjin Port
                      Domestic sewage treatment project

                      Domestic sewage + water-ballast

                      1,800

                      MBR

                      Port Miscellaneous water

                      06.10

                      An airport Wastewater Treatment Project in Korea

                      Airport waste water

                      3,000

                      CMF

                      Airport Miscellaneous water

                      03.09

                      A Electric Power University  Domestic sewage treatment project

                      Domestic sewage

                      1,100

                      MBR

                      Landscape Irrigation

                      08.08

                      Olympic Equestrian Venue in Sha Tin Hong Kong

                      Racecourse Wastewater

                      200

                      MBR

                      Miscellaneous water

                      08.06

                      Table 1, ROCKCHECK Sewage Treatment Plant CMF System Outlet Water Quality

                      No.

                      Item

                      Unit

                      Index

                      1

                      PH

                       

                      6.66

                      2

                      Temperature

                      °C

                      12-25

                      3

                      COD

                      mg/L

                      48

                      4

                      BOD5

                      mg/L

                      <2

                      5

                      Turbidity

                      NTU

                      0.074

                      6

                      SS

                      mg/L

                      <1

                      7

                      TN

                      mg/L

                      <10

                      8

                      T-P

                      mg/L

                      <0.2

                      9

                      Coliform

                      pcs/L

                      None

                      10

                      Total bacteria

                      pcs/mL

                      0

                      11

                      Residual Chlorine

                      mg/L

                      <1

                      12

                      Conductivity

                      ms/cm

                      3550

                      13

                      Dissolved solids

                      mg/L

                      2300

                      14

                      color

                       

                      10

                      15

                      TOC

                      mg/L

                      6.1

                      Table 2, ROCKCHECK Sewage Treatment Plant CMF System Main Operating Parameters

                      No.

                      Item

                      content

                      1

                      Operation flow (12~25°C, 0.1MPa)

                      Max:65LMH
                      Average: 53LMH

                      2

                      Maximum inlet water pressure

                      0.2MPa

                      3

                      Maximum TMP

                      0.15MPa

                      4

                      Temperature range

                      12~25°C

                      5

                      Water flow/circulation method

                      Cross flow

                      6

                      Maximum backwash water quantity

                      75LMH

                      7

                      Control method

                      Stable flow

                      8

                      Air consumption

                      5.0m3/h·module

                      9

                      Air wash pressure

                      ≤0.05MPa

                      10

                      Backwash water consumption

                      water and air

                      0.5m3/h·module

                      11

                      water only

                      2.5m3/h·module

                      12

                      Backwash water pressure

                      ≤0.05MPa

                      13

                      Backwash time

                      water and air

                      40s

                      14

                      water only

                      40s

                      15

                      CEB period

                      24h

                       Turbidity

                       


                       Flux And TMP

                       Conclusion
                      In the ecological view of the current rapid economic development, when facing bottleneck problem with the water shortage in the steel industry, Tianjin Rockcheck Steel Company’s water recycling projects optimize and integrate with the advanced wastewater treatment, water preparation, process water, and balancing water technologies such as multi-core set of technological utilization of water resources from the urban sewage, sewage and wastewater from the river by the independent innovation and R & D, as well as the advanced treatment to the multi-source and non-conventional source of water resulted from the iron and steel production to reclaim and reuse for the enterprises to open up a new means of water supply, saving the new water at the same time ,reach a total reduction of pollutants and protect the surrounding environment.

                       

                       

                      甘肃11选5五码遗漏

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