System for treating sewage by utilizing plants and method thereof

Abstract

The invention relates to a system for treating sewage by utilizing plants and a method thereof, and the method comprise the following steps: 1) the system for treating sewage by utilizing the plants is established, and the system comprises a sewage inlet pipe, a grille well, a conditioning tank, a purification system and a purified water outlet pipe, which are connected in sequence, wherein the purification system comprises at least two purification tanks, each purification tank comprises at least two purified water tanks, each purified water tank comprises a tank body and a plurality of plant slots, and water plants are planted in each plant slot; 2) the sewage passes through the sewage inlet pipe and enters into the grille well to perform physical treatment, and then enters into the conditioning tank to perform preliminary settlement treatment, finally enters into the purification system to perform purification treatment; 3) the purified water flows out from the purified water outlet pipe of the system. The assembled system for treating sewage by utilizing the plants is adopted for pollution cleaning, the change and the trim of the plants in the system for treating sewage by utilizing the plants and the maintenance of other wetlands are higher in maneuverability, and constructed wetlands are not easy to be blocked.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a system and method for treating sewage with plants. Background technique [0002] Constructed wetlands can be divided into emergent plant systems, floating plant systems, submerged plant systems and mixed plant systems according to plant types. At present, the constructed wetland mainly researched and utilized is the emergent plant system. [0003] Emergent plant constructed wetlands can be divided into surface flow constructed wetlands and subsurface flow constructed wetlands according to the characteristics of water inflow and outflow. Surface flow constructed wetlands generally consist of one or several pools filled with matrix materials, planted with plants, and treated with anti-seepage at the bottom; the water depth is generally 0.3m-0.5m, and the water surface is located above the wetland matrix; sewage from upstream The inlet slowly flows through the surface of the wetland ...

AI Technical Summary

Problems solved by technology

④Clogging caused by the growth of plant roots in wetlands. Plants growing on the filling substrate, after long-term growth, the roots become more and more attached to the gaps in the filling material, resulting in substrate clogging; when pruning plants, the pruning mode generally adopted It is to cut out the growing part of the plant and leave the root in the ground. The renewal of the old root system will also affect the operation of the constructed wetland.

[0006] 2. The external structure of today's artificial wetlands generally uses cement bricks for anti-seepage treatment. After disposal, it is troublesome to deal with, occupying land, and easily causing secondary pollution

[0007] 3. It is troublesome to maintain. Weeds are easier to grow in substrate artificial wetlands, and annual plants will wither in winter, causing internal pollution of wetlands.

[0008] 4. Without recycling, the main pollution of rural domestic sewage is water eutrophication, while nitrogen and phosphorus are fertilizers for plant growth, and the plant waste cut out by maintenance is useless for resource utilization, and is generally discarded as waste and becomes solid waste

[0009] 5. The operability is not very flexible. It is not based on the living characteristics of the countryside. It requires a large number of pipelines to collect sewage. The cost of wetland construction itself is relatively expensive.

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