T/SEESA 005-2020 Wet oxidation technology for treatment of high-concentration organic waste water and sludge technical specifications

Scope

Scope: This standard specifies the design, process, construction, acceptance, and operation management requirements for treating high-concentration, difficult-to-degrade organic wastewater (including landfill leachate) and organic sludge (including industrial and municipal sludge) using wet oxidation technology. This standard applies to projects that use wet oxidation technology to treat high-concentration, difficult-to-degrade organic wastewater (including landfill leachate) and organic sludge (including industrial and municipal sludge). Projects using other technologies may refer to this standard for implementation. Main technical content: 4.3 The design plan shall aim to achieve "stabilization, reduction, and harmlessness", ensure the safety and reliability of the final disposal method, and strive to avoid secondary pollution during the treatment process. At the same time, the materials and energy generated during the treatment process should be utilized to achieve "resource utilization". 5.4 When treating sludge with wet oxidation technology, if energy self-sufficiency can be achieved without adding external heat sources and without affecting the sludge's fluidity, the sludge concentration should be higher than 2.5%, and the higher the sludge concentration, the better. The residual sludge needs to be pre-concentrated to the required concentration in a sludge concentration tank before entering the main wet oxidation reactor for oxidation reaction. The design of the sludge concentration tank should refer to the design standards for sludge concentration tanks in relevant wastewater treatment plants. 5.7 The main wet oxidation reactor is composed of pressure vessels made of special metal materials, including heat exchangers, reaction kettles, gas-liquid separators, etc. The design and manufacture of the main reactor should select suitable materials based on the nature of the wastewater and sludge and the processing requirements to ensure the long-term stable opera

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