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Recuperación de aguas residuales urbanas procedentes de plantas de tratamiento

Resumen

Tipo:
Demanda Tecnológica
Referencia:
TRIT20160707001
Publicado:
25/07/2016
Caducidad:
25/07/2017
Resumen:
Un equipo de investigación de una universidad italiana especializado en materiales está desarrollando una nueva tecnología de recuperación de aguas residuales urbanas procedentes de plantas de tratamiento para explotar el potencial de arcillas, que actúan como coagulante, y aumentar su eficiencia. El equipo de investigación busca universidades o centros de I+D para colaborar en la fase experimental mediante acuerdos de investigación, así como industrias para continuar con el desarrollo de los aspectos técnicos y establecer acuerdos de cooperación técnica.

Details

Tittle:
Recovery urban sewage sludge from wastewater treatment
Summary:
An Italian university research team expert in new materials is working on a new technology for recovery urban sewage sludge from wastewater treatment exploiting the potentiality of particular clay that acts as coagulant, increasing its efficiency.
The team is looking for a university or R-Y-D institution to collaborate in the experimental phase for a research cooperation agreement and an industry to further the development of the technical aspects for a technical cooperation.
Description:
The debate on sludge recovery and disposal has recently been the target of growing interest due to the huge amounts of sewage sludge resulting from wastewater treatment, which require proper and environmentally accepted management. A great variety of sludge treatment technologies are well developed in order to remove pathogen and toxic compounds, to control odour and to ensure human health and environmental protection. However, sludge final disposal is mainly focused on agricultural reuse and composting and needs to be further developed. The difficulty in addressing this problem stems from the capability to meet at the same time the development of a new methodology at a competitive cost.
The proposed recovering applications for municipal sewage sludge include lightweight aggregates to be used as fillers, cement, brick, artificial reefs, wave absorption blocks, and slope protection blocks; ceramic fillers, bulking agents to improve sludge composting.
In this context also clays have emerged as promising candidates for the application in wastewater treatment. Some studies report about the application of bentonite, an aluminium phyllosilicate clay, as absorbent material.

The Italian university research team, composed by physics and engineers with expertise in new materials, is investigating a new and ground-breaking method to recover sewage sludge exploiting the potentiality of a particular clay that is biocompatible, economic and eco sustainable.
In particular, the team explores the addition of different clays as coagulant in recovery of sewage sludge from wastewater treatment, increasing its efficiency. Indeed, to develop the proposed technology, the researchers test a specific clay that has several applications in agriculture, building products, personal care, paper and polymer films, household products and surface coatings.
The team has knowledge and expertise to correctly prepare and manage clay aqueous dispersions to ensure a complete control of the behaviour of these systems, thanks to deep studies on very rich and debated state diagram of aqueous clay dispersions aimed to investigate the influence of parameters such as clay and salt concentration on aging dynamics.

Initially, the researchers analyse the sludge treatment processes in order to obtain optimised treated sewage sludge. Thus, a particular clay is added to sewage sludge.
When this clay is added to water the viscosity of the dispersion increases several orders of magnitude up to drive the system from a fluid towards a "jelly", arrested, state. The same phenomenon happens when the clay is mixed to sewage sludge as tested in the laboratory.

The sewage sludge clay blend will be deeply investigated to find the optimised sample to be used as prototype. It will be characterized through different experimental techniques to measure its physicochemical and mechanical properties. Once obtained a system based on sludge clay lightweight aggregates with characteristics proper to recovering, a technological application, e.g. as filler in the construction sector, can be proposed.

The research cooperation agreement will consider:
(i) Optimization of the sludge treatments with possible technological innovations.
(ii) Characterization from a physicochemical point of view and fully control of the new system sewage sludge clay blend.
(iii) Laboratory testing in the sewage sludge clay blend as filler after having determined the optimum conditions.

The competence of the partner sought will be addressed to primary and secondary raw materials processing; valorisation, recovery and recycling of raw materials; development of advanced technologies for application in material and energy recovery.

The technical cooperation agreement will consider the development of the technical aspects related to the proposed technology, the availability for sewage sludge sampling and for collaborating in treatment process optimization.
Technical Specification or Expertise Sought:
The research team is looking for university and/or R-Y-D Institution with expertise in different experimental techniques to measure its physicochemical and mechanical properties of sewage sludge clay blend, such as structural and dynamical investigation of soft colloidal systems, different techniques such as X-ray and neutron scattering - exploiting European large scale facilities -, light, scattering, and calorimetry.

Another partner could be an Industrial partner, managing a wastewater treatment plant.

Partner sought

Type and Role of Partner Sought:
The partner sought is a University and/or R-Y-D Institution available to collaborate in the development of the experimental phase, in the physic-chemical characterization analyses on soft colloidal systems and in results validation.
The interested partner should have proper equipment and a consolidate expertise.
In this case, the team proposes a research cooperation agreement

An alternative partner sought is an industry with wastewater treatment plant, available for sewage sludge sampling and for collaborating in treatment process optimisation.
The partner should be preferably in the construction sector, and should be available for products validation.
The team proposes a technical cooperation agreement.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English