One of the main reasons for the increase in the ecological tension of aquatic ecosystems remains the discharge into water bodies of domestic wastewater containing toxic substances and pathogenic microorganisms. This is due to the imperfection of water treatment technologies, including due to wear and tear of utility networks and violations in the technological process, accompanied by salvo emissions. Reducing the anthropogenic load on water bodies is possible by retechnologizing various stages of wastewater treatment. The paper describes the design of a sedimentation tank with aeration elements for clarification of urban wastewater, providing an increase in the efficiency of sedimentation of suspended solids. Spraying fine air bubbles contributes to the collision and enlargement of aggregate-unstable elements without the use of coagulants and flocculants. The paper presents a mathematical algorithm for calculating the required deposition surface, taking into account the wastewater flow rate, the nominal diameter of the dispersed phase particles and the required degree of purification. Numerical experiments have shown that for a settlement with a population of 100,000 people, a treatment plant with a standard sedimentation tank is required, the area of which is 130 m². The use of a sedimentation tank with aeration elements in similar conditions allows reducing the required clarification surface to 120.9 m² without reducing the clarification efficiency. It has been proven that the spraying of finely dispersed air bubbles helps to reduce the required settling area of the sump by 8%.

水生生态系统生态紧张度增加的主要原因之一仍然是含有有毒物质和病原微生物的生活废水排放到水体中。这是由于水处理技术的不完善，包括公用事业网络的磨损和技术过程中的违规行为，并伴随着齐射排放。通过对废水处理的各个阶段进行再技术改造，可以减少水体的人为负荷。本文描述了带有曝气元件的沉淀池的设计，用于澄清城市废水，提高了悬浮固体沉淀的效率。在不使用凝聚剂和絮凝剂的情况下，喷射细小气泡有助于聚集体不稳定元素的碰撞和扩大。本文提出了一种计算所需沉积表面的数学算法，同时考虑了废水流速、分散相颗粒的标称直径和所需的净化程度。数值实验表明，对于一个10万人口的聚居点，需要一个带标准沉淀池的处理厂，其面积为130 m² . 在类似条件下使用带有曝气元件的沉淀池可以将所需的澄清表面减少到 120.9 m ²而不会降低澄清效率。事实证明，喷洒精细分散的气泡有助于将油底壳所需的沉降面积减少 8%。