Sewage sludge joint treatment technology

• Main Authors: ZHANG JINFANG, LIN XIAOXI, HU QICHAO, ZHANG XIAOYU
• Format: Patent
• Language: Chinese; English
• Published: 12.10.2016
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a sewage sludge joint treatment technology which comprises the following steps: adding quicklime and polymeric aluminum ferric sulfate into the to-be-treated sewage sludge; stirring uniformly; performing mechanical filter pressing and high-speed centrifugation to realize solid-liquid separation; and feeding the separated solid slag into a one-level or multi-level electromagnetic heating sludge treatment device for drying or carbonization treatment, wherein the dried material can be directly buried while the carbonized material can be directly used as fuel. In the invention, the sewage sludge treatment effect is good, and the content of harmful substances in the separated solid and liquid can be effectively reduced; the technology design is scientific and reasonable, and the situation of social energy shortage is relieved while the sludge treatment problem is solved, thereby creating economic value; and moreover, the carbonization is thorough, the treatment efficiency is high, the techn