Industrial Water Management

Special features of industrial water management

  • Each type of (waste) water is different in terms of quantity and composition or required quality.
  • Customers need tailored, decentralized solutions.
  • Every industry has its own requirements.
  • Water, recyclables in wastewater and energy should be reused at best.
  • Processing methods must fit into the production process.
  • There are high demands on experience, quality, reliable operation and services.

Core topics of industrial water management

  • Resource- and energy-efficient water, wastewater and partial flow treatment – Sustainable concepts and technologies
    • Water and recyclable materials recycling
    • Energy from (waste) water
    • Optimization of resource consumption and lifecycle costs
  • Automation & Digitization – New Products & Services
  • Standardization & Modularization – Use savings and improvement potential
  • Contaminant removal
  • Sludge and residue treatment.

Objectives of the working group

The members of GWP come from all areas of water management and have a high level of competence. The objectives of this working group are to bundle and coordinate common topics and interests of the members with a focus on industrial customers. The goals at a glance:

  • Networking between the GWP network and politics and authorities at an international level
  • Support of member companies in terms of market access: international industry associations, general contractors, global players/industrial groups
  • Participation in events, trade fairs and delegation trips in order to focus about industrial water management
  • Taking up F & E topics such as Zero Liquid Discharge and Industry 4.0 or innovation programmes

The working group interacts with the GWP → regional sessions as well as the other GWP → working groups, which come into contact with the topic of industrial water management within the framework of the body.

 

Events

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july 2019

09.07IFAT Africa(All Day)

17.07INDOWATER(All Day)

24.07Vietwater(All Day)

august 2019

29.0816th Everything About Water and Environment Expo(All Day)

september 2019

03.09Aquatech Mexico(All Day)

30.09Innovation Conference on Sustainable Use of Water: Cities, Industry and Agriculture(All Day)

october 2019

09.10EXPO Mongolia(All Day)

09.10Ecoforum Lviv(All Day)

10.10waterist - Istanbul Water Congress and Fair(All Day)

20.10Cairo Water Week(All Day)

21.10WETEX(All Day)

23.1010th meeting of the Working Group Industrial Water Management(All Day: wednesday)

30.10Pollutec Marokko(All Day)

november 2019

05.11Aquatech Amsterdam(All Day)

26.11GAT | WAT(All Day)

december 2019

01.12IWA Water and Development Congress & Exhibition 2019(All Day)

09.12Informationsreise für marokkanische Einkäufer und Entscheidungsträger der Wasser- und Abwasserwirtschaft - 09.-13. Dezember 2019Informationsreise für marokkanische Einkäufer und Entscheidungsträger der Wasser- und Abwasserwirtschaft - 09.-13. Dezember 2019(All Day)

13.12WFES Water(All Day)

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june 2019

11.06DWA-Training: The German Water Sector - Learn from experience(All Day)

03.06Aquatech China(All Day)

may 2019

29.05SU ARNASY Water Expo Central Asia(All Day)

23.0512th Annual Conference09:30 - 17:00

22.0515th General Meeting14:00 - 17:30

april 2016

13.048th Meeting Working Group Industrial Water Management10:00 - 16:00

News & Information

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IWA Water Reuse 2019 – 16.-20.06. in Berlin

More than 400 experts from more than 40 countries will meet – Last minute registration still open!   “Overcoming Water ...

Reference project

Case study about wastewater treatment in a dye mill in Tirupur, India


12/2019
Tirupur, India

Application and system design

Dying processes require high concentrations of salt to fix the dyes onto the cellulose textile. At the end of the dying process, the wastewater stream consists of a high concen-tration of salts and organics.

In this dying mill in Tirupur, the wastewater is first treated with biological treatment (tertiary treatment) to reduce the amount of organics in the wastewater. This step is followed by quartz filtration. The process water is then passed through an ion exchange treatment stage, consisting of the organic scavenger to remove the organic substances followed by water softening with Lewatit® CNP 80 WS. Since sodium sulfate is added during the process, calcium must be removed to avoid the precipitation of calcium sulfate.

After the ion exchange sequence, 85 m3/h water is passed through a reverse osmosis (RO) system with Lewabrane® RO S400 HR to remove salts and other remaining organ-ics. While the feed contains total dissolved solids (TDS) of 11,000 mg/l the RO process reduces it to less than 100 mg/l. The RO system operates at a recovery rate of 80%. The RO brine with TDS of around 50,000 mg/l is further treated by NF (nanofiltration) membranes to recover the sulfate, while the sodium chloride, which passes through the NF membrane, is concentrated by a multiple-effect evaporator. The sodium chloride salts are finally dried in a solar pan and disposed of as solid waste. The concentrate of the NF process, which contains mainly sulfate, is reused in the dying process.

 

Membrane and ion exchange performance

State-of-the-art pretreatment is key to achieving these long lifetimes of RO elements while treating difficult industrial wastewater. The scavenger reduces the COD to a level of 35 ppm, which reduces organic fouling and the bio growth potential of the stream. The following softening reduces the hardness to less than 10mg/l, which results in a lower scaling potential. Combined with the high rejection and durability of the Lewabrane® S400 HR elements the expected performance and lifetime can be achieved.

 

Conclusion

The described industrial example shows that the reduction of wastewater, even in challenging process industries, is possible using the right tools. Lewatit® ion exchange resins and Lewabrane® reverse osmosis elements are a smart and efficient combination to treat wastewater that contains a high load of organics and high salinity.

In industrial water treatment applications, where a high load of organics could pass through pretreatment by ultrafiltration, the use of scavenger resins before RO treatment should be considered. The removal of organics will lead to decrease of fouling on the RO membrane.

 
Links

Jens Lipnizki
Contact person
Jens.lipnizki@lanxess.com

Lanxess Deutschland GmbH
Client

Case study about AlexFert fertilizer production in Egypt


12/2019
Egypt

Application and system design

Lewabrane® B400 FR elements are installed in the new BWRO plant of Egyptian fertilizer producer AlexFert in Alexandria, Egypt. The water treatment plant is fed with canal water (Nile river as origin) of seasonally variable TDS (300–550 mg/l). The water is pre-treated by coagulation, cold lime softening, and filtration. The RO plant consists of two trains, each of 120 m3/h feed stream and 74% recov-ery. A single train is composed of two stages in a 13:6 array with six elements per vessel. The RO units were placed into an existing water treatment plant, upstream of ion exchange full demineralization trains (SAC – WBA/SBA – MB, with Lewatit® MonoPlus resins).

 

Membrane performance

From the beginning of their use, the Lewabrane® RO elements demonstrated their excellent salt rejection with up to 99.76 % (at 20 °C). This rejection leads to a permeate conductivity in the order of 3 to 5 μS/cm, which significantly reduces ionic load for the resins at the demineralization unit. While maintaining the demanded parameters of deminer-alized water, the cycle times of the demineralization trains are increased by up to four times (depending on season and with a possibility for further increase). Thus, the customer can reduce consumption of specific chemicals for resin bed regeneration by approx. 60%.

 

Conclusion

Lewabrane® B400 FR exhibits an excellent performance with the difficult Nile surface water. The measured rejection is above expectations. The combination of Lewabrane® B400 FR membranes and Lewatit® MonoPlus resins for demineralization leads not only to the requested final demineralized water conductivity below 0.08 μS/cm / 2 ppb SiO2, but also to a stable and reliable process. Further-more, the new RO plant allows a reduction of specific chemical consumption of the resin bed due to less frequent regenerations.

 
Links

Jens Lipnizki
Contact person
Jens.lipnizki@lanxess.com

Lanxess Deutschland GmbH
Client

Head of Working Group

Dr.-Ing. Gerd Sagawe

Dr.-Ing. Gerd Sagawe
EnviroChemie GmbH

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Contact at our GWP-head office

Hagimar von Ditfurth

Hagimar von Ditfurth
Assistant to the General Manager

+49 30 300199 1229

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