52results about How to "Effluent water quality is stable and up to standard" patented technology

The invention discloses a treatment method for wastewater containing high-concentration suspended solids. The treatment method comprises the following steps of 1, multi-stage hydraulic cyclone pretreatment of the wastewater, wherein the wastewater containing the high-concentration suspended solids is separated by using multi-stage hydraulic cyclone centrifugal force, the solid particles of different sizes are pretreated, overflowing liquid enters the next link, and sediment is recycled; 2, multi-point flocculating settling concentration of the overflowing liquid, wherein the overflowing liquidobtained in the step 1 is introduced into a radical sedimentation basin, a flocculating agent is added into an additive adding pipe of the overflowing liquid at multiple points, by using the naturalvertical turbulent mixing effect of water flow, sufficient and quick mixing of the flocculating agent is achieved, concentrated slurry and supernatant water are obtained, and the supernatant water isrecycled; 3, multiple dehydration of the concentrated slurry, wherein the concentrated slurry obtained in the step 2 is subjected to multiple dehydration, such as direct filter pressing, tympanic secondary squeezing and full-flow high-pressure blowing of filter residues. Efficient solid-liquid separation and quick dehydration of the slurry are achieved, the outlet water quality meets the dischargestandards of the Integrated Wastewater Discharge Standards (GB8978) or the requirements of production recycling, the water content of a slurry cake is low, and the requirements for clean transportation are met.

The invention discloses a method for deeply removing organic phosphorus in waste water. The method comprises: under the condition that the pH value is 7.0-9.0 and a catalyst exists, adding ozone into the waste water, optionally adding a pro-oxidant to carry out an oxidation reaction; then adding a phosphorus removal agent to carry out coagulation and precipitation. According to the method of the present invention, the reaction is carried out in the range of pH 7.0-9.0, the reaction conditions are mild, and the operating cost is low; the organic phosphorus-containing wastewater is oxidized by using a strong oxidant to effectively remove the organic phosphorus in the wastewater, and then combined with With the addition of phosphorus removal agents, the removal rate of organic phosphorus is greater than 99%, which can reduce the total phosphorus in wastewater to below 0.3mg / L; it solves the problem that it is difficult to completely remove organic phosphorus and the total phosphorus cannot meet the standard, and can be widely used in various In the standard treatment of organic phosphorus-containing wastewater.