2results about How to "Promote harmlessness" patented technology

The application provides a composite material for sludge dewatering, a preparation method thereof and a sludge dewatering conditioner. The composite material for sludge dewatering comprises magnetic porous carbon and molybdenum disulfide loaded on the magnetic porous carbon, wherein the magnetic porous carbon comprises porous carbon and ferroferric oxide loaded on the porous carbon. The preparation method comprises the following steps: mixing the magnetic porous carbon with a molybdenum source and a sulfur source, and performing a hydrothermal reaction to make the molybdenum source and the sulfur source react to generate molybdenum disulfide; after the reaction is completed, performing solid-liquid separation, collecting the solid product, and calcining the solid product under an inert atmosphere at 350-450 DEG C to obtain the molybdenum disulfide magnetic porous carbon composite material; wherein the magnetic porous carbon comprises porous carbon and ferroferric oxide loaded on the porous carbon; and the composite material for sludge dewatering can construct a molybdenum disulfide magnetic carbon-based composite material with a large specific surface area, high catalytic activity and high universality, and the composite material can improve the sludge dewatering performance.

This invention discloses an apparatus and method for the electrochemical oxidation of ammonia nitrogen wastewater for complete nitrogen removal. The apparatus includes an equalization tank, an electrolytic cell, and a water storage tank connected sequentially via a liquid delivery pipeline. The electrolytic cell contains an anode and a cathode, which are respectively connected to an external power source via wires. The anode comprises a conductive substrate and a bimetallic single-atom catalyst supported on the conductive substrate. The cathode is selected from one of the following: Pt electrode, Cu electrode, stainless steel electrode, graphite electrode, and nickel electrode. This invention utilizes the bimetallic single-atom catalyst supported on the anode to directly remove ammonia nitrogen from wastewater through electrochemical oxidation. This method effectively achieves complete nitrogen removal without the need for other auxiliary devices, converting ammonia nitrogen in wastewater into environmentally friendly nitrogen gas, thus achieving resource recovery and harmlessness.