CN102557269A - Landscape park type surface runoff treatment system - Google Patents

Abstract

The invention belongs to the non-point source pollution control technology, in particular to a landscape park type surface runoff treatment system. The surface runoff treatment system of the present invention is mainly composed of landscape ecological ponds, runoff treatment landscape land, ecological diversion ditches and park auxiliary facilities. The location of the present invention is the tail end of sewage or surface runoff in rural areas and cities with high pollutant concentration, requiring open river surface and relatively large abandoned land or natural wetland for use. In this system, the runoff treatment landscape land and the landscape ecological pond are respectively introduced into the runoff treatment landscape land and the landscape ecological pond through the ecological diversion ditches. After the sewage is treated, it flows into the original runoff. For surface runoff, especially rural surface runoff and urban surface runoff with high pollutant content in runoff, the invention fully develops the self-purification ability of soil, land and plants, combines various technical means according to local conditions, and realizes the double effect of pollutant control and landscaping. Efficacy, can be used for the treatment of rural agricultural runoff, urban runoff, tail water of sewage treatment plants, etc.

Description

A landscape park-style surface runoff treatment system

technical field

The invention belongs to the technical field of surface source pollution (non-point source) control, and specifically relates to a landscape park-style surface runoff treatment system, which is suitable for the treatment of rural agricultural runoff, urban runoff, and tail water drainage of sewage treatment plants.

Background technique

The continuous development of productivity has changed the way of life of human beings. When human beings pursue material life, they also have higher and higher requirements for the production and living environment. In the process of pursuing material life and requiring more means of production and living, human beings produce more and more production and domestic waste (including waste water, waste residue and waste gas, etc.), and flow into the natural environment, causing greater environmental pressure on nature. , while human beings satisfy their own survival needs, they also hope that their living environment will continue to improve and pursue better comfort in their own lives. However, the existing control of pollutants, especially wastewater, whether it is source control or end-end treatment, only considers how to deal with pollutants, and the pollutants are treated to meet the relevant national standards for discharge, lacking in pollution control. The concepts and actions of landscaping and landscape construction in the process of waste disposal.

The invention aims at surface runoff, especially rural agricultural surface runoff and urban surface runoff with high pollutant content in runoff, fully develops the self-purification ability of soil, land and plants, and combines various existing technical means according to local conditions to achieve pollutant control and The double purpose of beautiful landscape meets people's increasing environmental requirements.

Contents of the invention

The purpose of the present invention is to provide a landscape park-style surface runoff treatment system with good effluent quality and beautiful landscape in view of the problem that the existing technical means only focus on water pollution control and ignore the construction of environmental landscape.

The landscape park type surface runoff treatment system proposed by the present invention consists of landscape ecological ponds (or landscape ecological lake reservoirs), runoff treatment landscape land, ecological diversion ditches and (or) park auxiliary facilities.

The surface runoff treatment system of the present invention is located at the tail end of agricultural, rural and urban sewage or surface runoff with a high concentration of pollutants. The river surface is required to be open and a relatively large area of abandoned land (natural wetland) is available for use.

The surface runoff treatment system with rivers and canals as the main form introduces runoff treatment landscape land and (or) landscape ecological ponds respectively through ecological diversion ditches. the

The landscape ecological pond (landscape ecological lake reservoir) is a plant pond with sewage treatment function. There can be multiple plant ponds, and a single ornamental plant species is planted in the plant pond, so as to create a themed pond for ornamental purposes. A variety of plants can also be planted in the plant pond;

The runoff treatment landscape land is the main landscape land of the runoff treatment method, wherein vegetation is planted, and the vegetation is mainly local native flood-resistant and pollution-resistant species;

The runoff treatment forms of the described runoff treatment landscape land are various types of land sewage treatment methods, and according to the water quality characteristics, sewage land infiltration methods, constructed wetland methods, etc. can be selected;

The area ratio between the landscape ecological pond and the runoff treatment landscape land should be designed according to the specific water quality characteristics, generally keep the water surface area: land area=1:5~5:1;

The ecological diversion ditches are non-flood discharge channels, and are provided with rammed earth or ecological cement embankments, and functional units such as ecological seepage dams and plant grids are set according to different functional sections;

The above-mentioned ancillary facilities of the park include optional garden roads, park benches and chairs, pavilions and pavilions, etc.;

In the present invention, each functional unit should be selected according to local conditions, and the original water surface and land pattern should be changed as little as possible. Each landscape sewage treatment unit is not independent. Groups".

The present invention is aimed at surface runoff, especially rural agricultural surface runoff and urban surface runoff with high pollutant content in the runoff. The present invention fully develops the self-purification ability of soil, land and plants, and combines various existing technical means according to local conditions to achieve pollutant control The double purpose of beautiful landscape meets people's growing environmental requirements. It can be used for the treatment of rural agricultural runoff, urban runoff, tail water of sewage treatment plants, etc. the

Detailed ways

The following will be described in detail through examples.

The project site is a river improvement and landscape construction project in a certain area in the south to protect drinking water sources. The main pollutants in the river are N and P pollutants, which come from upstream urban runoff, sewage treatment plant drainage and some agricultural and rural runoff. The runoff is perennial It is 20,000 cubic meters per day, and it can reach 100,000 cubic meters per day during the rainy season. The height difference between the water inlet and outlet of the project site is about 20m, the project area is about 100,000 square meters, the land area is about 80,000 square meters, and the rest is water surface. There are two rivers, which converge at the end of the project section. According to the existing land status quo, the present invention is realized through the following technical means.

1. Due to the large difference in water flow drop and seasonal runoff at the project site, the present invention uses an overturning dam at the front end of the river to divert the water, and the treated water volume is 20,000 cubic meters per day, which meets the annual runoff. Part of the river surface runoff treatment project in the rainy season , and the rest is discharged into the spillway. The river water coming out of the overturning dam enters the ecological diversion ditch (reformed for the narrower channel). In the ecological diversion ditch of the present invention, a plurality of ecological infiltration dams are set, the distance between the dams is 50-200m, and the slope is maintained at 1‰~5 ‰, laying gravel layers, building plant grids, and using different varieties of water-resistant plants. In addition to filtering infiltrated sewage, the ecological infiltration dam can also bear the drop in sections, aerate the water during the journey, fill the river with water, and extend the residence time of water in a channel.

2. Set up a pipe network under the first seepage dam to divert the river water, part of it into the landscape ecological pond, and part of it into the runoff treatment landscape land. The landscape ecological pond is aimed at intercepting nitrogen and phosphorus. It is composed of multiple plant ponds connected in series and in parallel. According to the seasons and flowering characteristics of different aquatic plants, different perennial plant species are planted to ensure that plants bloom in every season. In order to strengthen the pollution load capacity of the treatment process, the runoff treatment landscape land adopts the subsurface artificial wetland, and the upper soil builds an exhibition area for flood-resistant and pollution-resistant plants, which echoes with the landscape belt on the other side of the river to form wetland plants on the river bank Sightseeing belt.

3. The establishment of ancillary facilities in the park within the project. Due to the open runoff treatment method, garden roads, benches, viewing pavilions, hydrophilic platforms, etc. are set up in the project accordingly to give back the landscaped environment to nearby residents, and at the same time, it is also welcomed by local residents.

Other unexplained parts involved in the present invention are the same as the prior art or implemented by adopting the prior art.

Claims (4)

1. a view park formula rainwash treatment system is characterized in that handling view soil, ecological shunting irrigation canals and ditches and park affiliated facility by the landscape ecological pool, runoff forms; Wherein:

Described rainwash treatment system, addressing are the higher agriculture rural area of Pollutant levels and the sewage in city or the tail end of rainwash, require river surface open, have bigger waste land of area or natural wetland available;

With rivers and canals is the rainwash treatment system of main forms, introduces runoff respectively through said ecological shunting irrigation canals and ditches and handles in the view soil and/or the landscape ecological pool, and sewage imports original runoff after treatment;

The described landscape ecological pool is the plant pool with WWT function, is implanted with single ornamental plant species or various plants but plant in the said plant pool;

It is main view land used that described runoff is handled the view soil, wherein plants vegetation, and said vegetation is the local autochthonal anti-resistant species that flood;

The runoff processing form that described runoff is handled the view soil is various types of soil WWT modes, comprises polluted water land diafiltration method, artificial swamp method.

2. view according to claim 1 park formula rainwash treatment system is characterized in that it is 1:5 ~ 5:1 that the described landscape ecological pool and runoff are handled the area ratio in view soil.

3. view according to claim 1 park formula rainwash treatment system; It is characterized in that described ecological shunting irrigation canals and ditches are non-flood discharge passage; Be provided with and ram soil or eco-cement embankment, ecological infiltration dam, plant grid functional unit are set according to the different functions section.

4. view according to claim 1 park formula rainwash treatment system is characterized in that described park affiliated facility, comprises alternative garden road, park stool chair and the building booth platform that is provided with.