An atomizer for use in a water treatment system includes an influent inlet, to receive a flow of fluid containing contaminants a gas flow inlet, to receive a flow of gas to be mixed with the fluid in a mixing zone, an airflow controlling component, including an array of vanes disposed between the gas flow inlet and the mixing zone to impart a rotational component to a direction of flow of the gas. A channel receives the flow of fluid containing contaminants, and conducts the flow of fluid containing contaminants to the mixing zone, wherein radially outwardly flowing fluid containing contaminants is mixed with radially inwardly flowing gas to atomize the fluid containing contaminants, and an outlet.

One aspect of the present invention relates to a waste liquid treatment composition for treating a waste liquid containing a body fluid to separate the waste liquid into a supernatant and an aggregate in a container. The waste liquid treatment composition comprises: a solid flocculant having at least one group selected from the group consisting of an OH group, an NH group, and an FH group; and a solid compound having at least one group selected from the group consisting of an OH group, an NH group, and an FH group.

The invention relates to a sewage pit (1, 60) for receiving and discharging waste material, particularly domestic, medical and/or industrial waste comprising liquid and solid constituents, to the sewer (52), the sewage pit comprising: —a housing (2, 3, 4) with a closable receiving space (9), wherein one or more of the walls of the housing is provided with at least one inlet (19) configured to carry the waste material into the receiving space, a flushing liquid feed (10) which is embodied to feed flushing liquid to the receiving space for bringing the waste material into suspension, and at least one outlet (29) which can be connected to the sewer and is configured to discharge the mixture of waste material and flushing liquid from the receiving space and to the sewer, —at least one pump (25, 26) connectable or connected to the one or more outlets which is configured to pump the mixture which has been brought into suspension from the receiving space and to discharge the mixture via the one or more outlets.

A system for treating medical sewage containing SARS-CoV-2 based on nano graphene, including a medical sewage collection and transportation device, primary and secondary sedimentation tanks, a filtering device, primary, secondary and tertiary graphene sterilization devices, a multiple purification tank, a photocatalytic degradation device, a SARS-CoV-2 deep purification device and a graphene water purification device including at least three stages of graphene water purification units. The disclosure also provides a method for treating the medical sewage containing the SARS-CoV-2 using the above system.

Fusion proteins containing a targeting sequence, an exosporium protein, or an exosporium protein fragment that targets the fusion protein to the exosporium of a Bacillus cereus family member are provided. Recombinant Bacillus cereus family members expressing such fusion proteins are also provided. Genetically inactivated Bacillus cereus family members and recombinant Bacillus cereus family members that overexpress exosporium proteins are also provided. Seeds coated with the recombinant Bacillus cereus family members and methods for using the recombinant Bacillus cereus family members (e.g., for stimulating plant growth) are also provided. Various modifications of the recombinant Bacillus cereus family members that express the fusion proteins are further provided. Fusion proteins comprising a spore coat protein and a protein or peptide of interest, recombinant bacteria that express such fusion proteins, seeds coated with such recombinant bacteria, and methods for using such recombinant bacteria (e.g., for stimulating plant growth) are also provided.

The invention relates to a container (1) for recovering the heat energy of wastewater. The container (1) comprises a shell (10) and a continuous spiral pipe (2) for conveying wastewater through the container in a vertical direction. A first heat transfer space for a heat transfer liquid is arranged between an outer shell of the spiral pipe (2) and the shell (10) of the container (1), and a second heat transfer space is arranged inside the spiral pipe (2). The shell (10) is provided with at least one openable inspection hatch (6) having fastened thereto a manifold (7) as well as a shell and tube heat exchanger (3) having its inlet and outlet ends coupled to said manifold (7). The spiral pipe (2) consists of acid-proof or stainless steel and its internal surface is adapted to have a higher chromium content than the other parts of the spiral pipe's wall.

A disinfecting drain trap system for reducing the growth of microorganisms in drain traps, the disinfecting drain trap system comprising at least one heating module, one mechanical vibration module; and an off-centered drain trap, wherein the off-centered drain trap comprises at least one collection portion.

The invention includes a system and method for delivery and storage of an absorbent for solidification of liquid waste. The system includes a plurality of nestable containers configured to receive aqueous liquid to be solidified and forming a packet safe space when nested one within another. The system also includes a plurality of packets at least partially soluble in the aqueous liquid to be solidified. The containers include at least one packet and each packet contains a solidifier for use as an absorbent composition for the aqueous liquid to be solidified. A packet may be housed within the containers inside a packet safe space. The invention also includes an improved system and method for packaging a solidifier for solidification of liquid medical wastes.

A device for disinfecting the interior of a drain pipe having a tubular wall formed with a hole between the sink drain inlet and the U-shaped trap. A UV-C LED module is positioned to register with the hole and includes a UV-C LED that generates a radiation beam having a predetermined radiation angle to transmit UV-C light into the drain pipe through the hole to irradiate at least a portion of said interior surface and expose airborne pathogens contained therein to UV-C light. A lens generally coextensive with the tubular wall has a peripheral edge aligned with the hole. The UV-C LED is spaced from the lens a distance to cause the radiation beam to extend up to but not beyond the peripheral edge of the lens to maximize transmission of UV-C light through the lens to maximize exposure of the interior surface and airborne pathogens to the UV-C light.

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.