• 专利标题:   Treating wastewater containing organic phosphorus, comprises e.g. filtering organic phosphorus sewage, adding oxidants and catalysts, carrying out ultrasonic treatment, electrification treating, hydrolysing, metabolizing and decomposing, recirculating and discharging into planting field.
  • 专利号:   CN114230097-A
  • 发明人:   CHEN G
  • 专利权人:   GUANGZHOU BORUI WATER TREATMENT TECHNOLO
  • 国际专利分类:   C02F101/30, C02F009/14, C05G003/00, C05G003/40
  • 专利详细信息:   CN114230097-A 25 Mar 2022 C02F-009/14 202265 Chinese
  • 申请详细信息:   CN114230097-A CN11556328 18 Dec 2021
  • 优先权号:   CN11556328

▎ 摘  要

NOVELTY - Treating wastewater containing organic phosphorus comprises e.g. filtering organic phosphorus sewage, adding oxidants and catalysts, adjusting initial stage, mixing and stirring sewage, adjusting acidity and alkalinity, carrying out ultrasonic treatment, subjecting organic phosphorus sewage to second stage of adjustment, adjusting pH, adding flocculant, electrification treating, directly passing into anaerobic tank for hydrolysis, sequentially adding activated sludge and modified phosphorus adsorption carrier, metabolizing and decomposing, reducing total phosphorus level, controlling sludge increment, and recirculating activated sludge in lower layer in precipitation tank, discharging remaining activated sludge into planting field with modified nitrogen and phosphorus adsorption carrier as an organic fertilizer, discharging treated sewage from sedimentation tank, and controlling pH value of treated sewage to 6.8-8. USE - The method is useful for treating wastewater containing organic phosphorus. ADVANTAGE - The method: removes most of organic phosphorus in sewage after ultrasonic and electrolytic treatment; provides organic fertilizers rich in nitrogen, phosphorus and potassium, which can directly apply for plants to absorb, and slowly releases phosphorus in soil; and is environmentally friendly. DETAILED DESCRIPTION - Treating wastewater containing organic phosphorus comprises (i) filtering organic phosphorus sewage, adding oxidants and catalysts, adjusting initial stage, mixing and stirring sewage for 1-1.5 hours, adjusting acidity and alkalinity to 4.1-4.9, and carrying out ultrasonic treatment to organic phosphorus, (ii) subjecting organic phosphorus sewage to second stage of adjustment, again adding oxidant, adjusting pH to 5.5-7.7, and adding flocculant to precipitate, (iii) electrification treating for those with good pH adjustment using direct current, using aluminum electrodes as anode materials, using graphene electrodes as cathode materials, (iv) directly passing into anaerobic tank for hydrolysis, and sequentially adding activated sludge and modified phosphorus adsorption carrier to sewage, (v) metabolizing and decomposing organic phosphorus by activated sludge, absorbing phosphorus or phosphorus metabolites in sewage by modified nitrogen and phosphorus adsorption carrier, reducing total phosphorus level in biochemical tank, and controlling sludge increment, (vi) modified phosphorus adsorption carrier different from activated sludge settling speed in sedimentation tank, where the lower layer is activated sludge layer, and upper layer is modified nitrogen phosphorus adsorption carrier and activated sludge mixed layer, and (vii) re-circulating activated sludge in lower layer in precipitation tank, discharging remaining activated sludge into planting field with modified nitrogen and phosphorus adsorption carrier as an organic fertilizer, discharging treated sewage from sedimentation tank, and controlling pH value of treated sewage to 6.8-8. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of flow chart for treating wastewater containing organic phosphorus. (Drawing includes non-English language text).