Development and Application of Process Water Simulator for Water Reuse and Industrial Process Water Treatment

We report here a proposed process water treatment design guide: selection of nanofiltration membrane, membrane test for model solutions and test for pre-treated industrial process water. We also suggest a complex evaluation method, which can help in decision-making process. Membrane selection experiments showed that high flux coupled with high enough rejection is favored to shorten treatment time and perform acceptable rejection. The effect of composition was studied during constant total salt concentration and it was revealed that the DL membrane had stable flux and high rejection. In case of pre-treated industrial process water a more complex effect could be observed: the counter ions present in the feed solution, moreover the complexing agents as well as other properties of the feed could lower the membrane’s rejection, simultaneously decreasing the flux. Nanofiltration though still showed advantages, which allowed its implementation into an existing industrial scale technological chain. At a recovery rate of 0.2-0.5 all the environmental requirements could be fulfilled, and the permeate leaving the technology could be fed into the city sewer system.

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Industrial Process Water Treatment and Reuse: A Framework for Synthesis and Design

Industrial & Engineering Chemistry Research ◽

10.1021/ie401379j ◽

2013 ◽

Vol 53 (13) ◽

pp. 5160-5171 ◽

Cited By ~ 22

Author(s):

Alberto Quaglia ◽

Alessandra Pennati ◽

Milos Bogataj ◽

Zdravko Kravanja ◽

Gürkan Sin ◽

...

Keyword(s):

Water Treatment ◽

Industrial Process ◽

Process Water

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Wastewater treatment using DAF for process water reuse in apatite flotation

Journal of Cleaner Production ◽

10.1016/j.jclepro.2021.127285 ◽

2021 ◽

pp. 127285

Author(s):

Mariana A. Santos ◽

Fabiano Capponi ◽

Carlos H. Ataíde ◽

Marcos A.S. Barrozo

Keyword(s):

Wastewater Treatment ◽

Water Reuse ◽

Process Water

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Case study on the implementation of deammonification for the process water treatment of Munich WWTPs

Water Science & Technology ◽

10.2166/wst.2012.084 ◽

2012 ◽

Vol 65 (10) ◽

pp. 1895-1902 ◽

Cited By ~ 1

Author(s):

Rita Hilliges ◽

Eberhard Steinle ◽

Bernhard Böhm

Keyword(s):

Water Treatment ◽

Operating Costs ◽

Process Water ◽

Second Stage ◽

Sludge Disposal ◽

Sludge Digestion ◽

High Investment ◽

Flow Treatment

The two-staged WWTP ‘Gut Grosslappen’ has a capacity of 2 mio. PE. It comprises a pre-denitrification in the first stage using recirculation from the nitrifying second stage. A residual post-denitrification in a downstream sand filter is required in order to achieve the effluent standards. Presently the process water from sludge digestion is treated separately by nitrification/denitrification. Due to necessary reconstruction of the biological stages, the process water treatment was included in the future overall process concept of the WWTP. A case study was conducted comparing the processes nitritation/denitrititation and deammonification with nitrification/denitrification including their effect on the operational costs of the planned main flow treatment. Besides the different operating costs the investment costs required for the process water treatment played a significant role. Six cases for the process water treatment were compared. As a result, in Munich deammonification can only be recommended for long-term future developments, due to the high investment costs, compared with the nitritation/denitritation alternative realizable in existing tanks. The savings concerning aeration, sludge disposal and chemicals were not sufficient to compensate for the additional investment costs. Due to the specific circumstances in Munich, for the time being the use of existing tanks for nitritation/denitritation proved to be most economical.

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