Integral shoreland zone system for on-site treatment of river and lake sludge and application of integral shoreland zone system

Abstract

The invention discloses an integral shoreland zone system for on-site treatment of river and lake sludge and application of the integral shoreland zone system and belongs to the technical field of sludge treatment. The integral shoreland zone system consists of three subsystems, namely a sludge ecological treatment subsystem, a siphon water discharge subsystem and a sludge percolate deep treatmentsubsystem, wherein the sludge ecological treatment subsystem comprises plants, fillers, aeration tubes and water collection tubes from top to bottom; air through tubes are connected with the water collection tubes; a siphon tube in the siphon water discharge subsystem takes the shape of a telescopic hump; and the sludge percolate deep treatment subsystem comprises a first-stage ecological treatment unit up-flow wetland and a second-stage ecological treatment unit surface-flow wetland. Due to transpiration and absorption functions of the plants, filtration and adsorption functions of the fillers and degradation functions of microorganisms, dewatering and harmless treatment of sludge, deep treatment of sludge percolate and purification of a part of river / lake water can be effectively achieved.

Description

technical field [0001] The invention relates to an integrated coastal belt system for in-situ treatment of river and lake silt and its application, belonging to the technical field of river and lake silt treatment. Background technique [0002] Silt is a kind of sediment that gradually settles to the surface of the bottom of the water body through various physical, chemical and biological actions in still water or slow flowing water environment. Silt has a high natural moisture content, strong compressibility, often grayish black, and is rich in organic matter, minerals, and heavy metals. Nutrients such as nitrogen and phosphorus accumulated in the silt at the bottom of rivers and lakes, on the one hand, can be directly ingested by microorganisms, enter the food chain, and participate in the cycle of aquatic ecosystems; on the other hand, under certain environmental conditions, they can be released from the bottom mud Re-enter the water body, thus forming the endogenous pol...

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Problems solved by technology

Phytoremediation technology is widely used to treat sewage, and has been promoted in the field of river and lake water quality improvement, however, the application of phytoremediation technology to treat sludge is rare

After searching, the current patents related to silt phytoremediation technology include: 1) A method of wetland silt treatment (application number 201710068301.1), which digs and builds a backfill pond, and uses rice seedling throwing technology to scatter and plant wet plants in the backfill pond , to achieve sludge treatment by building plant communities, but the water in the drainage area of ​​the backfill pond is directly discharged, which is easy to bring secondary pollution to the environment; 2) The sludge purification regulation treatment system (application number 201610479546.9) adopts the sludge landfill pond purification regulation Sludge can eliminate the defect of easy to generate odor in the sludge landfill, but the sludge leachate collected by the overflow well has not been considered for advanced treatment, which is not conducive to direct discharge or reuse; 3) a sludge (or sludge) pond The floating greening treatment process structure (application number 201710186061.5) provides a method for planting plants in sludge (or sludge) ponds formed by municipal sludge (or sludge) landfills, which can achieve sludge dehydration and Recycling, but the treatment of sludge is not thorough, not suitable for the promotion of local treatment

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