Abstract: The disclosure provides a compact and high-rate bioreactor for wastewater treatment comprising a feeding port for introducing a feed of waste material, a reaction zone in liquid communication with the feed port when the bioreactor is in operation and having an aerator to provide an airlift configuration in the reaction zone; a settling zone comprising a separator for separating a liquid effluent from solid particles; a liquid effluent outlet port for withdrawing the liquid effluent; and a solids outlet port for removing solids. Further provided is a spiral separator for use in a bioreactor and a system comprising the bioreactor and a membrane separator to provide hygienic water.

Abstract: A graphene coated crushed glass particle adsorbent is provided for the removal of heavy metals and other contaminants in from solutions such as wastewaters, contaminated surface water and groundwater. The adsorbent comprises crushed (e.g. recycled) glass coated with graphene nano-sheets using a staged thermal binding process and the silicas in the glass as a catalyst. The adsorbent may be configured for use in both in-situ and ex-situ treatment systems and is capable of removing heavy metals and other inorganic and organic contaminants. The strong adsorptive bond between contaminants and the graphene coating on crushed glass particles can also lead to alternative applications of the end of life adsorbent, such as base material in road and pavement (e.g. cement-like) construction materials.

Abstract: A graphene coated crushed glass particle adsorbent is provided for the removal of heavy metals and other contaminants in from solutions such as wastewaters, contaminated surface water and groundwater. The adsorbent comprises crushed (e.g. recycled) glass coated with graphene nano-sheets using a staged thermal binding process and the silicas in the glass as a catalyst. The adsorbent may be configured for use in both in-situ and ex-situ treatment systems and is capable of removing heavy metals and other inorganic and organic contaminants. The strong adsorptive bond between contaminants and the graphene coating on crushed glass particles can also lead to alternative applications of the end of life adsorbent, such as base material in road and pavement (e.g. cement-like) construction materials.