Railway stockyard surface runoff collecting, purifying, storing and recycling system

Abstract

The invention discloses a railway stockyard surface runoff collecting, purifying, storing and recycling system, which is used for controlling surface source pollution formed by the surface runoff of astockyard. The surface runoff of a stockyard enters an ecological water purification ditch and a reuse water multi-unit rainwater garden through an inflow sewage interception module in sequence, andan ecological- biological-electrolysis coupling purification module is arranged in the ecological water purification ditch and the reuse water multi-unit rainwater garden. The ecological water purification ditch inflow sewage interception module has the functions of intercepting large floating and particle pollutants and filtering and adsorbing ammonia nitrogen to purify surface runoff. The ecological water purification ditch loaded with the ecological-biological-electrolysis coupling purification module and the reuse water multi-unit rainwater garden have the functions of water conveying, purifying, storing and recycling, microorganisms are enriched through natural fiber filler, and an electrolysis system powered by solar energy is arranged to strengthen removal of nitrogen, phosphorus and organic matter. The effluent reaches the reuse water standard in 'The reuse of urban recycling water-Water quality standard for urban miscellaneous water consumption' (GB / T 18920-2002), and the effluent is reused as water for greening and flushing the ground.

Description

technical field [0001] The invention belongs to the technical fields of sewage treatment and environmental protection, and in particular relates to a system for collecting, purifying, storing and reusing surface runoff of railway stockyards. Background technique [0002] At present, the non-point source pollution of surface runoff seriously threatens the water ecological environment. The pollutants in the flushing water of the railway yard and the rainwater runoff pose a serious threat to the nearby water environment. Combining with the concept of sponge city, it is of great practical significance to establish a circulation purification and utilization system for the surface runoff of the storage yard that integrates collection, purification, storage and reuse, which can greatly reduce the pollution of the surrounding receiving water and soil. [0003] In recent years, rainwater collection, treatment and utilization systems based on the concept of sponge city have developed ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in existing runoff pollution control and reuse technologies, the present invention proposes a system for collecting, purifying, storing and reusing runoff on the surface of the storage yard. The inflow sewage interception module is used to intercept the large floating and suspended solids in the surface runoff of the storage yard, preventing them from entering the ecological clean ditch to deposit and block the ditch; and laying anti-seepage in the ecological clean ditch and the multi-unit rainwater garden of the reused water HDPE membrane, so that it has the function of storing surface runoff; at the same time, an ecological-biological-electrolytic coupling purification module is set in the ecological water purification ditch; a precipitation unit, a nitrification unit, and a denitrification unit (inner Ecological-biological-electrolytic coupling purification module) filter unit and water storage and reuse unit are set up to strengthen the purification of collected surface runoff and make the effluent meet the quality requirements of reused water

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