The present invention relates to the use of an ion exchanger for the removal and/or reduction of biological contaminants, such as viruses, bacteria and fungal spores, in gases and gas streams, such as room air and breathing air, and a corresponding method. In certain embodiments, the ion exchanger is a cation exchanger partially or substantially completely loaded with H.sup.+ ions or an anion exchanger partially or substantially completely loaded with OH.sup.− ions. Additionally or alternatively, the ion exchanger may be loaded with transition metal ions, such as titanium, copper and/or silver ions.

Protective breathing apparatus incorporates a powered air pump which introduces potentially contaminated air from the atmosphere to the ‘process chamber’. The process chamber are composed of a filter and disinfectant solution such as soap, alcohol by adding the solution mixed with the contaminated air passes through the filter to catch a virus in the inlet air to separate the processed air and solution. Furthermore the processed air can be heated and/or be exposed to UV light, the air is then forced to pass through a disinfectant into a centrifuge. The centrifuge then spins the disinfected air forcing the air through a filter, the air then passes a mechanical filter resulting in purified air that flows through conduit means into a transparent plastic breathing hood containing the wearer's head. The hood is secured by a neck band around the wearer's neck. Newly purified air in the breathing hood is distributed and circulated throughout the hood's interior, the current of air holds the hood out of contact with the wearer's head. After the purified air has been inhaled and exhaled by the wearer, it is expelled through an exhaust port in the breathing hood. The exhaled air has potential to be contaminated. The exhaust air travels through conduit means back to the process chamber, this redirected exhaust air is purified before its release back into the atmosphere so no contaminates are expelled into the atmosphere. Optional provision is made for adjusting the temperature of the newly purified air for optimal user comfort, and for a plurality of breathing hoods to be supplied by a single air purifying device.

The above device can be stationary without the breathing hood. Similar to a dust cleaner, but it can kill the virus.

The present disclosure relates to a device for generating an air containment envelope for the mitigation of pathogen transmission. In particular, the present disclosure relates to a system for removing pathogens from a dental operatory, comprising a manifold in fluid connection with a fluid source, the manifold including a plurality of apertures for directing a fluid stream, a fluid pump for pressurizing a fluid within the fluid source, and processing circuitry configured to instruct the fluid pump to pressurize the fluid, and instruct the fluid pump to pump the pressurized fluid to the manifold such that the directed fluid stream generates a fluid shield relative to an object.

The present invention provides a waste-liquid processing device, comprising: a first processing device and a mixing device, wherein the first processing device is provided with a first purifying unit for processing waste liquid from a waste liquid source to produce a purified liquid. The mixing device is used for mixing the purified liquid with a chlorine dioxide solution. The present invention also provides an air-pollution treatment device, comprising the waste-liquid processing device and a gas processing device. The gas processing device comprises an air extracting unit, a gas purifying unit, a gas-liquid separation unit, and an exhausting unit.

The mixing nozzle has a throat section, a diffuser section, a gas nozzle section, a first liquid suction port, a liquid nozzle section, a second liquid suction port, a baffle plate, and a jetting port. The first liquid suction port liquidly absorbs the solution in the water storage pool from a side of the gas nozzle section toward the gas nozzle tip. The liquid nozzle section extends to the downstream side of the gas nozzle section with intervening the first liquid suction port. The second liquid suction port liquidly absorbs the solution in the water storage pool from a side of the liquid nozzle section toward the liquid nozzle tip. The baffle plate is provided such that the mixed flow mixed in the diffuser section collides in front of a downstream end of the diffuser section, and divides and reverses the mixed flow.

There is an air purification system comprising, at least one housing, at least one pump configured to pump an enhanced fluid through the housing. at least one fan configured to draw air into the housing. With this embodiment, the air flow of the air is being cleaned and flows in a direction transverse to the direction of flow of the enhanced fluid. There can be at least one sensor configured to determine a level of biological impurities in the air. There can also be at least one controller configured to control a rate of movement of said at least one fan based upon a level of impurities detected by said at least one sensor.

A waste gas scrubbing tower includes a tower body unit, a filtration unit arranged in the tower body unit, a washing unit that introduces water from an external supply into the tower body unit. The tower body unit includes division boards that define a plurality of channels through which waste gas flows, the tower body unit including a waste gas inlet opening and a waste gas outlet opening. The filtration unit includes a plurality of filter members, which are arranged in the channels. The washing unit is operable to generate water mist curtains in the channels to wash the waste gas so that the waste gas that enters the waste gas scrubbing tower is subjected to multiple times of washing and filtration and purification.

A system and method for mitigating airborne contamination in a conditioned indoor environment utilizes one or more sensing modules configured to detect presence and/or concentration of particles and/or aerosols at different locations. A control module employs an artificial intelligence algorithm to selectively activate at least one mitigation module utilizing machine learning programmed rules and output signals from the sensing module(s). The mitigation module(s) are configured to take one or more actions to reduce presence and/or concentration of particles and/or aerosols in the conditioned indoor environment.

A purification device for exercise environment is provided and includes a main body, a purification unit, a gas guider and a gas detection module. The purification unit, the gas guider and the gas detection module are disposed in the main body to guide the gas outside the main body through the purification unit for filtering and purifying the gas, and discharge a purified gas. The gas detection module detects particle concentration of suspended particles contained in the purified gas. The gas guider is controlled to operate and export the gas at an airflow rate within 3 minutes. The particle concentration of the suspended particles contained in the purified gas, which is filtered by the purification unit, is reduced to and less than 0.75 μg/m.sup.3. Consequently, the purified gas is filtered, and an exerciser in an exercise environment can breathe with safety.

An insert of a cartridge for use with a liquid diffusing device is provided. The insert includes a body, an inlet provided in the body to receive diffused liquid generated within the cartridge during operation of the liquid diffusing device, an outlet zone defined at least in part by the body through which to discharge the diffused liquid toward an external environment, and a tortuous passage extending between the inlet and the outlet zone to aid in further reducing an average particle size of the diffused liquid as the diffused liquid moves through the tortuous passage. Removable cartridges for use with a diffusion device are also provided which include such an insert.