The invention provides a method of treating solid waste extracted from a liquid waste stream of a cardboard manufacturing and/or converting facility, comprising the steps of: forming a mixed waste from the solid waste with biological waste; and composting the mixed waste. The invention further provides an apparatus comprising: a mixing system to mix the solid waste with biological waste to form a mixed waste; one or more composting bays to contain one or more corresponding piles of the mixed waste; and aeration system to aerate each of the one or more composting bays from below; and a dosing system to dose one or more types of accelerant onto the composting mixed waste.

A processing liquid is generated by mixing a chemical and water in a processing liquid generation region disposed below an inner tank. By further supplying water to raise a water level, the processing liquid is supplied from below the inner tank. This prevents a used paper diaper from coming into contact with water containing no chemical.

The present invention relates to a method for fabrication of blue-fluorescent and non-toxic nanodiamonds from atmospheric particulate matters including total solid suspended particulate matter (TSPM) and particulate matter with size less than 10μ (PM.sub.10). Mostly, the present invention provides an efficient mitigation process for particulate pollutant by conversion of these pollutants (PM and TSPM) into non-toxic high-value product such as nanodiamond by using the ultrasonic-assisted chemical oxidation method. This method is environmental friendly, simple, and biocompatible for the production of nanodiamonds from such atmospheric particulate matter.

Provided is a system and a method for low-temperature treatment of heavy metals and dioxins in fly ash. In the present disclosure, the fly ash is subjected to tertiary water washing and then separation by pressure filtration with a plate and frame filter press to obtain fly ash after the tertiary water washing. A low-temperature heat treatment is conducted on the fly ash after the tertiary water washing in a stirring reactor by adding an additive combination. Chlorine salts in the fly ash can be effectively removed by the tertiary water washing, which avoids the chlorination of a precursor in the fly ash to form dioxins during the low-temperature pyrolysis, thereby improving a heat reduction efficiency of the dioxins in the fly ash. Moreover, the reduction of a chlorine content in the fly ash can also avoid deactivation of the additives and improve a solidification effect of the heavy metals.

Provided is a system and a method for low-temperature treatment of heavy metals and dioxins in fly ash. In the present disclosure, the fly ash is subjected to tertiary water washing and then separation by pressure filtration with a plate and frame filter press to obtain fly ash after the tertiary water washing. A low-temperature heat treatment is conducted on the fly ash after the tertiary water washing in a stirring reactor by adding an additive combination. Chlorine salts in the fly ash can be effectively removed by the tertiary water washing, which avoids the chlorination of a precursor in the fly ash to form dioxins during the low-temperature pyrolysis, thereby improving a heat reduction efficiency of the dioxins in the fly ash. Moreover, the reduction of a chlorine content in the fly ash can also avoid deactivation of the additives and improve a solidification effect of the heavy metals.

Organic waste is polished to remove floatable contaminants prior to being biologically treated. In one application, pressed organic waste is polished before being sent to a wet anaerobic digester, optionally to be co-digested with wastewater treatment plant sludge. The organic waste is polished by flinging globs of the organic waste against a screen (3,4) while flowing air across the flinging globs. The polishing can be performed in a device having a rotor (6) with discrete paddles (9,10) inside of a cylindrical screen (2,3,4).

Treatment technology directed to using mine waste as a raw material to manufacture a mine filling product for use as a suitable precursor product or mine filling product to be used as a backfill material to close a mine. The precursor product or mine filling product retains its metals and is not be able to generate acidity. According to the disclosure, the precursor product or mine filling product, when placed in a mine, may also remove metals from mine fluids in the mine it contacts, and still retain the metals it hosted when it was a mine waste prior to it being used as a raw material to manufacture the precursor stowing backfill product.

A method for disposing of a device including an alkali metal is described. In one embodiment, the method includes placing the device in a container configured to permit a controlled exposure of the alkali metal to a reactant for the alkali metal or a solubilizer of the alkali metal, and allowing the alkali metal to react with the reactant or to dissolve in the solubilizer to render the alkali metal substantially non-reactive. Containers for use in the method and kits including the alkali metal device and the disposal container are also described.

A fluorescent bionanocomposite is provided, as well as a composition and method of synthesis of fluorescent bionanocomposite for selective stain for gram negative bacteria.

The purpose of the present disclosure is to provide a recovery method for an organic acid. The recovery method makes it possible to efficiently recover an organic acid that is included in a deactivating aqueous solution that includes excrement. This recovery method has the following features. A method for recovering an organic acid that deactivates a highly water-absorbent polymer that is included in used absorbent articles, the method being characterized by including: a deactivation step (S1) in which the highly water-absorbent polymer is immersed in a deactivating aqueous solution that includes an organic acid and has a prescribed pH and the highly water-absorbent polymer is deactivated; a highly water-absorbent polymer removal step (S2) in which the deactivated highly water-absorbent polymer is removed from the deactivating aqueous solution; a pH adjustment step (S3) in which the deactivating aqueous solution is adjusted to a prescribed pH; a concentration step (S4) in which the deactivation step (S1), the highly water-absorbent polymer removal step (S2), and the pH adjustment step (S3) are repeated using deactivating aqueous solution that has gone through the pH adjustment step (S3) and the organic acid in the deactivating aqueous solution is concentrated; and an organic acid recovery step (S6) in which the organic acid is recovered from the deactivating aqueous solution.