CN110565769A - A rainwater collection, treatment and reuse system for sponge roads - Google Patents

Abstract

The invention relates to the technical field of urban rainwater recovery, in particular to a sponge road rainwater collecting, treating and recycling system, which comprises: the road tooth interval type collecting unit is used for collecting rainwater collected on the road surface; the permeable pavement unit is paved on the pedestrian pavement and used for absorbing rainwater on the pavement; the permeable pavement units and the road tooth interval type collecting units are respectively connected with the concave greening pool; the rainwater in the sunken greening pool permeates and converges and then enters the rainwater collecting pool through the seepage collecting pipe; buried integration rainwater processor, the rainwater of rainwater collecting pit flow in to buried integration rainwater processor is built-in, and buried integration rainwater processor carries the rainwater to the clean water basin, and the clean water basin quality of water after handling is better, can be used to afforest watering or view amusement, realizes that the rainwater is from oozing holding to a plurality of processes of net usefulness, and the rainwater is high-efficient to be recycled.

Description

A rainwater collection, treatment and reuse system for sponge roads

technical field

The invention relates to the technical field of urban rainwater recovery, in particular to a novel urban sponge road rainwater collection, treatment and reuse system.

Background technique

At present, urban rainwater management is a hot research topic in the field of environmental protection, which includes water quantity management and water quality management. In the process of urban construction in our country, the original natural drainage system has been changed, and the fast drainage mode based on the underground pipe network has been adopted. However, due to the insufficient drainage capacity of the pipe network, it is easy to cause urban waterlogging problems; at the same time, due to the relatively high intensity of human activities in urban areas Many years of research at home and abroad have proved that urban surface runoff is the second largest water body non-point source pollutant after agricultural runoff. It is the second largest source of urban water environment pollution after wastewater.

Sponge city proposes a new generation of urban stormwater management concept, which can significantly improve the city's "elasticity" in adapting to environmental changes and dealing with natural disasters caused by rainwater. Sponge city can absorb, store, infiltrate and purify water when it rains, and "release" the stored rainwater and make use of it when needed. However, due to the late start of research on sponge cities in my country, the existing sponge technology system does not involve the collection and treatment of urban rainwater, especially the technology that does not involve municipal road construction and initial rainwater collection and treatment. few.

Certainly also have a small number of documents to disclose the utilization and the technical scheme of aspects such as the treatment of relevant road surface rainwater: as name is called " pavement rainwater recycling device " (publication number CN201517235U), " rainwater treatment new process-road biological treatment method " (publication number CN101531423A ) patent documents, the former mainly solves the utilization of rainwater, and the latter treats rainwater by arranging a biological filter material layer between the pavement brick and the soil layer. An integrated treatment scheme for rainwater, especially road rainwater collection, treatment and reuse, has not been found to improve the comprehensive utilization efficiency of rainwater and reduce urban non-point source pollution.

Contents of the invention

The purpose of this invention is to address the difficult problem of urban rainwater management, taking the most difficult road rainwater control as an example, to propose an integrated system covering road rainwater collection, treatment and reuse, so as to realize efficient utilization of rainwater and reduce urban non-point source pollution.

The specific technical scheme of the present invention is as follows: a sponge road rainwater collection treatment and reuse system, the sponge road rainwater collection treatment and reuse system includes:

The curb interval collection unit is used to collect rainwater collected on the road surface;

Permeable pavement unit, laid on the pavement, used to infiltrate and retain rainwater on the pavement;

A sunken green pool, the permeable pavement unit and the curb interval collection unit are respectively connected to the sunken green pool;

The rainwater collection pond, the rainwater in the sunken green pond flows into the rainwater collection pond by itself through the seepage pipe after infiltration and confluence;

The buried integrated rainwater treatment machine, the rainwater from the rainwater collection tank flows into the buried integrated rainwater treatment machine, and the buried integrated rainwater treatment machine transports the treated rainwater to the clear water pool .

Further, the curb spaced collection unit includes a plurality of curbs and a plurality of spaced gaps, the spaced gaps are formed between any two adjacent curbs, and the spaced gaps Set up as a micro ecosystem.

Further, the permeable pavement is paved with permeable brick materials;

The permeable brick material includes one of concrete permeable bricks, exposed aggregate permeable concrete, and aeolian sand permeable bricks, or any combination thereof.

Further, a rainwater retention gravel ditch is arranged on the upper side of the sunken green pool.

Further, the rainwater in the sunken green pool flows into the seepage pipe after infiltration and confluence, and is connected to the overflow maintenance multifunctional well in turn through the rainwater collection pipe, and the rainwater is transported into the rainwater collection pond;

The rainwater collection pipe has an inclination angle that enables rainwater to flow naturally by gravity, and has a two-way seepage function;

One end of the overflow maintenance multifunctional well is connected to a rainwater seepage collection pipe, and the other end is connected to an urban rainwater pipeline overflow channel;

One end of the rainwater collection tank is connected to the rainwater collection pipe, and the other end of the rainwater collection tank is connected to the water inlet channel, and is connected to the buried integrated rainwater treatment machine through the water inlet channel.

The beneficial effects of the present invention are as follows: Firstly, by reducing the elevation of the road surface, transforming the pavement and curb structure of the existing road, dismantling the existing drainage channel, and transforming it into a permeable greening pool, a complete rainwater management and ecological purification system is constructed , forming a green sponge.

Second, soften the underground structure of the sidewalk and transform it into an ecological material with a permeable structure. The material can efficiently absorb nutrients in the water body, play a role in purifying water quality, and can penetrate into the ground to replenish groundwater.

Third, lay permeable rainwater collection pipes, build maintenance wells and rainwater collection pools, and form a reservoir to skillfully regulate and store rainwater, purify surface runoff pollution, and the collected rainwater can be reused as resources.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is curb sectional view of the present invention;

Fig. 3 is a schematic cross-sectional view of the present invention.

Detailed ways

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention and are not intended to The scope of application of the present invention is limited. For those of ordinary skill in the art, the present invention can be applied to other similar scenarios according to these drawings without creative work;

As shown in the specification and claims, the terms "a", "an", "an" and/or "the" are not intended to refer to the singular and may include the plural unless the context clearly indicates an exception. Generally speaking, the terms "comprising" or "comprising" only suggest the inclusion of explicitly identified steps and elements, and these steps and elements do not constitute an exclusive list, and the method or device may also contain other steps or elements. The term "based on" is "based at least in part on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one further embodiment".

As shown in Figure 1, it is an overall schematic diagram of a sponge road rainwater collection treatment and reuse system provided by the present invention, and the sponge road rainwater collection treatment and reuse system includes:

The curb interval collection unit 1 is used to collect rainwater overflowing from the road surface;

The permeable pavement unit 2 is laid on the pavement for absorbing rainwater on the pavement;

A sunken green pool 3, the permeable pavement unit 2 and the curb interval collection unit 1 are respectively connected to the sunken green pool 3;

A rainwater collection pond 5, the rainwater in the sunken green pond 3 flows into the rainwater collection pond through the seepage pipe 4 after infiltration and confluence;

The curb interval collection unit includes a plurality of curbs 11 and a plurality of interval gaps 12, the interval gaps 12 are formed between any two adjacent curbs 11, the interval gaps Part 12 is set up as a micro-ecosystem;

The micro-ecosystem is mainly planted with low-growing herbs or bryophytes, which can be specifically understood as green vegetation.

The permeable pavement unit 2 is paved with permeable brick materials;

The permeable brick material includes one of concrete permeable bricks, exposed aggregate permeable concrete, and aeolian sand permeable bricks, or any combination thereof.

A rainwater retention gravel ditch is arranged on the upper side of the sunken green space pool 3 .

The rainwater in the sunken green pool 3 flows into the maintenance well 4 after permeation and confluence, and is connected to the maintenance well 4 through the rainwater collecting pipe 6, and the rainwater is transported to the rainwater collection tank 5;

The rainwater collecting pipe 6 has an inclination angle that enables the rainwater to flow naturally by gravity;

One end of the rainwater collection tank 5 is connected to the rainwater collection pipe 6, and the other end of the rainwater collection tank 5 is connected to the overflow channel, and overflows into the original municipal rainwater pipe network through the overflow channel, and the rainwater collected by the rainwater collection tank resources can be reused;

The present invention aims to solve urban surface runoff pollution, wherein urban surface runoff includes road surface runoff, roof runoff, and garden runoff, wherein road surface runoff is the part with the strongest pollution effect and has the most serious impact on receiving water bodies, and the pollution source of urban road surface runoff Including traffic emissions, atmospheric dustfall and pollution of rainwater itself, the most important of which is traffic source emissions, including wear of tires and road construction materials, leakage of carried goods, wear of brake connection devices and other particulate matter produced by vehicle operation, vehicle exhaust, vehicle Body corrosion, brake wear, tire wear, heavy metals from fuel leakage, toxic organic pollutants from incomplete fuel combustion and lubricating oil leakage, oil and grease from fuel and lubricant leakage, etc.;

Representative water quality indicators of pollution emitted by traffic sources include suspended solids (SS), organic pollutants (COD), heavy metals (Pb, Zn, Cu, Cr, Ni), mineral oils, chlorides, polycyclic aromatic hydrocarbons (PAHs) ;

In order to remove the above-mentioned pollutants, the pollutants mentioned include suspended solids, organic pollutants, heavy metals, mineral oils, chlorides and polycyclic aromatic hydrocarbons, so the following specific technical contents are adopted to realize the rainwater collection, treatment and reuse system of sponge roads. Treatment of indoor runoff sewage;

Pollutants discharged from traffic sources and runoff caused by rainwater are mainly collected through the curb interval collection unit 1 and the permeable pavement unit 2. During the collection process, the pollutants are processed step by step,

The curb interval collection unit 1 includes a plurality of curbs 11 and a plurality of interval gaps 12, the interval gaps 12 are formed between any two adjacent curbs 11, the interval A miniature ecosystem is set in the void portion 12;

Wherein the curb 11 forms a spaced gap 12 between 4 to 6 meters, and the micro-ecosystem can be planted with low herbs or bryophytes, which can be specifically understood as the micro-ecosystem is green Vegetation, in order to solve the above problems, the micro-ecosystem provided by the present invention includes planting soil, which is mixed with metal activators in the soil, improves the activity of heavy metals on the road surface through metal activators, improves the absorption of heavy metals by plants, and After the plants are mature, they are recycled and crushed and incinerated at the same time, which can further realize the extraction of heavy metals.

Wherein the metal activator is prepared using the following composition ratio, the metal activator includes 90-100 parts of activators, 300-320 parts of sulfur-containing compounds, and 500-550 parts of organic materials based on a water content of 10%. , 200 to 220 parts of alkaline substances and 200 to 300 parts of reduced substances in conversion of sodium hydroxide;

Wherein the active substance is acrylic acid, the sulfur-containing compound is sulfur, the organic material is crushed straw, etc., the alkaline substance is sodium hydroxide, and the reducing substance is reducing manganese powder. It is prepared by stirring and heating in sequence; and the planted vegetation is preferably tall fescue or white clover, wherein tall fescue and white clover are combined with a metal activator to achieve relatively good absorption of heavy metals, and the metal activation The agent improves the activity of heavy metal pollutants in runoff pollutants, and then is absorbed by tall fescue or white clover;

In order to absorb the heavy metals in the runoff pollutants in cooperation with the spaced gaps 12, the rainwater absorbed by the permeable pavement unit 2 needs to pass through the spaced gaps 12 to absorb heavy metals through the spaced gaps 12, specifically The solution is that the depth of the spaced gap 12 is 1.2-1.5m, so the rainwater absorbed by the permeable road surface first passes through the spaced gap 12, and then enters the sunken green pool 3;

The beneficial effects of the present invention are as follows: firstly, the elevation of the road surface is lowered, the pavement and curbs of the existing sidewalk are transformed, the existing drainage canal is removed, and a permeable greening pool is transformed into a permeable greening pool, thereby constructing a complete rainwater management and ecological purification system, Form a green sponge system. Compared with traditional roads, the sponge formed by permeable pavement and sunken green spaces can effectively reduce runoff by 45-65%.

Second, soften the underground structure of the sidewalk and transform it into a variety of materials for permeable structures. The materials absorb the nutrients in the water body, play a role in purifying the water quality, and can penetrate into the ground to replenish groundwater. Compared with traditional roads, the removal rate of TSS by sponge roads can reach about 42-57%.

Third, lay permeable rainwater collection pipes, build maintenance wells and rainwater collection pools to form a reservoir, skillfully regulate and store rainwater, purify surface sewage, and the collected rainwater can be reused as resources.

In the second embodiment of the present invention, the rainwater collection, treatment and reuse system for sponge roads further includes a buried integrated rainwater treatment machine, and the buried integrated rainwater treatment machine is arranged on the rainwater collection pipe 6, and the integrated rainwater treatment machine is directly connected to a section of the rainwater collection pipe 6 close to the rainwater collection tank 5.

Claims (5)

1. A sponge road rainwater collection treatment and reuse system is characterized in that, the sponge road rainwater collection treatment and reuse system comprises: The curb interval collection unit is used to collect rainwater collected on the road surface; Permeable pavement unit, laid on the pavement, used to infiltrate and retain rainwater on the pavement; A sunken green pool, the permeable pavement unit and the curb interval collection unit are respectively connected to the sunken green pool; A rainwater collection pool, the rainwater in the sunken green pool is collected into the rainwater collection pool by the rainwater seepage collection pipe after infiltration and confluence; In the buried integrated rainwater treatment machine, the rainwater from the rainwater collection tank flows into the buried integrated rainwater treatment machine, and is transported to the clean water pool after being filtered, purified and disinfected. 2. A sponge road rainwater collection treatment and reuse system according to claim 1, characterized in that, the curb interval collection unit includes a plurality of curbs and a plurality of interval gaps, any two The spaced gaps are formed between adjacent curbs, and a miniature ecosystem is arranged inside the spaced gaps. 3. A kind of sponge road rainwater collection treatment and reuse system according to claim 1, characterized in that, the permeable pavement adopts permeable brick pavement; The permeable brick material includes one of concrete permeable bricks, exposed aggregate permeable concrete, and aeolian sand permeable bricks, or any combination thereof. 4. A sponge road rainwater collection system and reuse system according to claim 1, characterized in that a rainwater retention gravel ditch is arranged on the upper side of the sunken green pool. 5. A sponge road rainwater collection system and reuse system according to claim 1, wherein the rainwater in the sunken green pool enters the rainwater seepage collection pipe after infiltration and confluence, and passes through the rainwater collection pipe The multifunctional wells for overflow maintenance are connected sequentially, and the rainwater is transported to the rainwater collection pool; The rainwater seepage collection pipe has an inclination angle that enables the rainwater to flow naturally by gravity, and has a two-way seepage function; One end of the overflow maintenance multifunctional well is connected to a rainwater seepage collection pipe, and the other end is connected to an urban rainwater pipeline overflow channel; One end of the rainwater collection tank is connected to the rainwater collection pipe, and the other end of the rainwater collection tank is connected to the water inlet channel, and is connected to the buried integrated rainwater treatment machine through the water inlet channel.