2results about How to "Reduce COD concentration" patented technology

The utility model belongs to the technical field of non-ferrous metal smelting wastewater treatment, and particularly provides a wastewater treatment system which comprises a raw water tank, a first adjusting module, a second adjusting module and an electrolysis module, the raw water tank is used for bearing wastewater, and the raw water tank, the first adjusting module, the electrolysis module and the second adjusting module are sequentially communicated; the first adjusting module is used for reducing the pH value of the wastewater, the electrolysis module is used for decomposing organic matters in the wastewater, and the second adjusting module is used for increasing the pH value of the wastewater. By arranging the electrolysis module, organic matters in the wastewater can be decomposed, so that the COD (Chemical Oxygen Demand) concentration of the wastewater is reduced, and the recycling requirement is met; meanwhile, no sludge is generated after the wastewater is treated by the electrolysis module, so that the additional cost of wastewater treatment is greatly reduced, and the risk of secondary pollution is eliminated; meanwhile, the electrolysis module is high in integration level, low in treatment cost, small in occupied area and beneficial to popularization and application.

The utility model relates to a kind of ecological system of reinforcing three-surface riverway denitrification and phosphorus removal, comprising: the cascade dam body being arranged in three-surface riverway and intercepting water body, ecological filter cage is arranged in the upstream river reach of cascade dam body in three-surface riverway, slow-release carbon source is added in ecological filter cage, ecological floating bed is arranged in the upstream river reach of ecological filter cage in three-surface riverway, plant gabion is arranged in the downstream river reach of cascade dam body in three-surface riverway.Affirmative effect is: ecological floating bed, ecological filter cage, cascade dam body, plant gabion are set along the direction of water flow in three-surface riverway, slow-release carbon source is added in ecological filter cage, by multistage purification process, to carry out water quality restoration to three-surface riverway water body, strengthen the removal of pollutants in water body, i.