Black and odorous water treatment system based on constructed wetland

Abstract

The invention discloses a black and odorous water treatment system based on a constructed wetland. The black and odorous water treatment system includes a coagulative precipitation pool, a water inletarea, a constructed wetland pool, a water collection channel and monitoring equipment; the coagulative precipitation pool is communicated with the water inlet area, the water inlet area is communicated with the constructed wetland pool, the constructed wetland pool is communicated with the water collection channel, and the water inlet of the monitoring equipment is communicated with the constructed wetland pool; a filter medium and aquatic vascular plants are arranged inside the constructed wetland pool, wherein the aquatic vascular plants are located on the filter medium; the filter mediumis prepared from, by weight, 10-20 parts of gravel, 5-15 parts of coarse sand, 15-30 parts of limestone, 10-15 parts of zeolite and 40-50 parts of ceramic granules. By adopting the black and odorous water treatment system based on the constructed wetland, nitrogen and phosphorus in a water body are absorbed, the adsorption performance is high, the treating performance of the constructed wetland isensured, the COD removal rate reaches 70%, the TN removal rate reaches 60%, the TP removal rate reaches 50%, the content of dissolved oxygen is greater than 4 gm / L, and index parameters are monitoredonline.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a black and odorous water treatment system based on an artificial wetland. Background technique [0002] Constructed wetlands are artificially built and controlled operations, and introduce the water body to be treated into the constructed wetlands, and use the physical, chemical, and biological multiple interactions between the substrate-plant-microbe components to treat and purify sewage and wastewater. technology. [0003] Chinese Patent Publication No. CN 109019866 A discloses a method for treating sewage in constructed wetlands. First, a first-level sewage treatment system is established, and emergent plants with well-developed roots and a filter material matrix with well-developed root systems are set at the entrance of the constructed wetland. The filter material matrix includes melon seeds, Limestone or volcanic rock is laid in layers, and th...

AI Technical Summary

Problems solved by technology

Although constructed wetlands can easily treat sewage, such substrates have poor adsorption capacity and are easily saturated, and the filter matrix has a single structure. Long-term operation will lead to a decline in the treatment capacity of constructed wetlands, which cannot guarantee subsequent treatment effects, and cannot treat COD, TN, TP and other specific index parameters are implemented on-line monitoring

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