The utilization of dyes in textile industries
has enormously increased in recent years and has
created several environmental problems. Currently,
several methods are in practice to treat wastewaters.
Effective and efficient treatment techniques before the
discharge of used water in the environment are the
need of the hour. This short review covers the research
and recent developments in advanced wastewater
treatment techniques such as nanophotocatalysis,
ceramic nanofiltration membranes, and biofilms. The
primary intent of this review article is to contribute the
ready-made references for the active researchers and
scientists working in the field of wastewater treatment.
This review has mainly focused on advanced physicochemical
and biological techniques for the treatment
of textile dye wastewaters. Further, the influence of
various operating factors on the treatment, advantages,
and disadvantages of various techniques was also
discussed. The recently developed materials for
wastewater treatment are also summarized based on
the latest available literature.

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A review on advanced physico-chemical and biological textile dye wastewater treatment techniques

Newly developed nanofiltration (NF) composite membranes by interfacial polymerization for Safranin O and Aniline blue removal

A critical review of the current water conservation practices in textile wet processing

When considering energy consumption and environmental issues, solvent-resistant nanofiltration (SRNF) based on polymeric materials emerges as a process for substituting conventional separation processes of organic solutions, such as distillation, which consume high amounts of energy. Because SRNF does not involve phase transition, this process can potentially decrease the energy consumption and solvent waste and increase the yield of active components. Such improvements could significantly benefit a number of fields, such as pharmaceutical manufacturing and catalysis recovery, among others. Therefore, SRNF has gained a lot of attention since the recent introduction of solvent-stable polymeric materials in the manufacture of nanofiltration membranes. The membrane materials and the membrane structures depending on the fabrication methods determine the separation performance of polymeric SRNF membranes. Therefore, this article gives a comprehensive overview of the current state-of-art technologies of generating membrane materials and corresponding fabrication methods for SRNF membranes made from polymeric materials expected to provide the most benefit. The transport mechanisms and the corresponding models of SRNF membranes in organic media are also reviewed to better understand the mass transfer process. Various SRNF applications, such as in pharmaceutical and catalyst, among others, are also discussed. Finally, the difficulties and future research directions to overcome the challenges faced by SRNF processes are proposed. C

Recent Advances in Polymeric Solvent-Resistant Nanofiltration Membranes

Kinetics of the ozone oxidation of Reactive Orange 16 azo-dye in aqueous solution

Textile wastewater reuse as an alternative water source for dyeing and finishing processes: A case study

Reuse of printing and dyeing wastewater in processess assessed by pilot-scale test using combined biological process and sub-filter technology

The invention relates to an advanced treatment and reusing method for wastewater from print, which is applicable to middle and small printing plants and comprises the following processes: (1) selecting appropriate biological suspended fillers; (2) laying a filter bed of granular activated carbon; (3) cultivating sludge strains with high efficiency; (4) selecting a support for a dynamic membrane; (5) forming the dynamic membrane, and (6) cleaning and regenerating the dynamic membrane. The advanced treatment and reusing method for wastewater from print has the advantages of simple equipment, compact structure, low investment cost, small operation expenses, large flux, good performance of pollution resistance and easy cleaning and regenerating; therefore, the advanced treatment and reusing method for wastewater from print is particularly applicable to advanced treatment of wastewater from print in middle and small printing plants, which can be reused in the cleaning technology.

Printing waste water advanced treatment and reusing method adapted for medium and small-sized printing plant

The invention relates to a double-level dynamic film filtering method used for recycling waste water generated by printing and dyeing process. The method includes the following steps: (1) the waste water is filled into an aeration biology filtering pool for biodegradation; (2) a first level filtering is carried out in a draining groove of the aeration biology filtering pool; (3) the water drained from the aeration biology filtering pool is filled into an intermediate pool containing dynamic film suspended granules; (4) the granules are settled onto the inner wall of a ceramic film tube through a interlacing filter method to form a second level dynamic film filtering; (5) when the dynamic film thickens and the jam to film holes becomes serious and a flux reduces greatly, a backwashing is carried out for the film tube. The invention has convenient operation and maintenance. When the pollution to the film of the dynamic film filtering reaches a certain degree, the flux of the film can be restored through hydraulic backwashing, with no need of replacing base material of films.

Lin Liu

Papers

Textile wastewater reuse as an alternative water source for dyeing and finishing processes: A case study

Reuse of printing and dyeing wastewater in processess assessed by pilot-scale test using combined biological process and sub-filter technology

Printing waste water advanced treatment and reusing method adapted for medium and small-sized printing plant

Two-stage dynamic membrane filtering method for printing and dyeing wastewater recycling