The seepage control materials used in rainwater recycling

Anti-seepage measures are indispensable measures for rainwater collection and recycling. Here will introduce the seepage control materials used in rainwater recycling.
1.Geotextiles is synthetic material made from synthetic fibers through acupuncture or weaving. It has excellent filtration, isolation and reinforcing protection, high tensile strength, good permeability, high temperature resistance, anti-freezing, aging resistance and corrosion resistance.
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2.The geomembrane is a kind of polymer chemical flexible material, which is a kind of polymer chemical flexible material, which is relatively small. It has advantages like strong extensibility, high adaptability to deformation, corrosion resistance, low temperature resistance and good frost resistance.
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3.Composite geomembrane is mainly used to prevent infiltration. The products have high strength, good extension performance, large deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance and good anti-seepage performance. It can meet the needs of civil engineering such as water conservancy, municipal government, construction, transportation, subway, tunnel and construction, such as anti-seepage, isolation, reinforcement, and anti-cracking reinforcement.
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In the recycling of rainwater, the anti-seepage material is an indispensable part, and the selection of anti-seepage material is closely related to the quality of the project. Of course, in the recycling of rainwater, not only one kind of material can be used, good materials can be helpful to the project.

Case Show of Green Roof System

Green roof system not only protect the building and add features to the city environment, but it also helps to manage the rain and create a diverse habitat for plants, wildlife and people.
Roof garden helps city to cool environment, improve air quality and provide a biodiverse habitat. They manage rainwater, cut off buildings and reduce heating and cooling costs by reducing stormwater runoff and filtering pollutants – which is what they help to reduce urban heat island effects.

1.Otora i cortili roof garden in Brera, Milan, Italy
This roof garden shows the possibility of transforming old and historic areas and buildings. Orto fra i cortili is a recycled roof that has been transformed into a green roof for residential use. The modular tray grows 4 different colored plants, including 2 mauve and green lettuce and 2 yellow and mauve pansies. The flower bed is placed linearly so that a series of monochrome strips are formed. Placed on the flower bed to bring environmental benefits. This means that the beams support the pallets, leaving the space between the two, and the shielding of the terraces helps to reduce the building’s temperature and thus the cost of summer cooling.
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2.Vierhavenstrip roof garden in Rotterdam, Netherlands
Roof Park Vierhavenstrip retail store (indoor) with a spacious public roof park, there are many positive benefits to the surrounding community and the entire area. Eastern commercial facade with tall trees and green hedges. The west features a folded surface and several theme gardens. The project certifies the possibility of designing urban Spaces at commercial centers and even at its top.
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3.Natick Knight roof garden in the United States
This roof garden is specially designed to combine residential areas, inspiring interaction and enjoying the open green spaces with ornamental lawns, flowering perennials and evergreen shrubs. The urban oasis is a reused space that has been transformed into a pleasant and inviting garden that appeals to people and makes them part of the surrounding landscape. This is related to the development of sustainable urban life. Completed in 2008, the project won the 2012 Boston Society of Landscape Architects awards.
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The Composition of Rainwater Collection and Utilization System

With the development of society, rainwater collection systems are also constantly improving. A complete system of rainwater harvesting and utilization includes: rainwater sewage hanging basket device – rainwater discarding device – rainwater filtering device – PP module reservoir – all- in-one purifying machine. Rainwater can be used for green land or landscape irrigation, washing roads and other purposes after the above treatment.

1.Rainwater Sewage Hanging Basket Device
The product’s wellbore is made of HDPE, the internal structure is made of 304 stainless steel. Larger floats can be intercepted when the filter diameter is more than 2mm.
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2.Rainwater Discarding Device
The product is used in rainwater drainage links, It is mainly used to discharge the heavily polluted rainwater during the pre-rainfall period and carry out preliminary filtration. The entire interior of the filter is always kept clear and the strainer automatically kept clean and free from clogging.
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3.Rainwater Filtering Device
Rainwater filtering device use filters to intercept rainwater solid-state magazines and particles, thereby reducing the turbidity of water and improve water quality. When the filth on the screen accumulates to a certain extent, the system will automatically open the drain valve and the sewage mechanism inside the body to clean the impurities on the filter screen and remove the impurities from the body.
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4.PP Module Reservoir
The PP module reservoir is an important part of the rainwater harvesting system. The reservoir serves to store rainwater, which is made up of multiple rainwater harvesting module. The underground water tank has high carrying capacity, it adopts the method of mutual splicing, without the need of large mechanical equipment, can be assembled into boxes on site, and the construction cycle is fast.
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5.All- in-one Purifying Machine
It sets filtering, recycling, disinfection system as a whole, and can be installed in a convenient location around the swimming pool, buried in the ground without building a machine room. The body of the box is made of 189-water resistant resin, which has high toughness. It is designed to prevent uv, chemical erosion, and water resistance.

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Why should we use paddock grid & How can we fix paddock footing with it

A common problem during the fall and winter months, muddy footing in horse turnout areas not only increases the difficulty of daily barn chores and grooming routines for owners, but creates a living environment for your horse that is neither safe nor healthy.

As well as providing an ideal breeding ground for bacteria and fungi that cause, among other conditions, scratches (also called mud fever) and thrush, muddy footing in horse paddocks can also lead to lost horseshoes, soft hooves, and injuries caused by slipping on the slick footing. Additionally, feeding your horse on a muddy surface can result in ingestion of dirt or sand particles that could cause colic.

Muddy paddocks can also have a negative environmental impact. Water runoff containing soil and traces of manure can contaminate local waterways and, if it leaches into the groundwater on your property, can also contaminate your well water.

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Mud = Water + Soil + Manure

Muddy footing tends to form first in high traffic areas of the paddock – gateways, around the water trough, feeding areas – where the frequent tramping of horse hooves churns up the topsoil and compacts the soil below. The soil compaction increases until eventually the rainwater, unable to penetrate and filter down through the soil, collects and pools on top, mixing with the topsoil and any organics – mostly manure but can also include hay and shavings – that have been trampled into the topsoil. This blend of ingredients (water, soil, and manure) is a recipe for mud.

Carrying Out the Cure

If it’s too late for preventative measures because your paddock is already a quagmire, don’t despair. There is a way to “spot treat” muddy patches.

Step 1: Remove the topsoil in the problem area to a depth of six to eight inches.
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Paddock grid systems are designed to provide a stable base for the footing material while facilitating drainage of rainwater – functions which help minimize the occurrence of muddy paddock footing. Photo: Clients from Leiyuan Industrial Company.

Step 2: Lay down a layer of geotextile fabric (sometimes called filter fabric or landscape cloth), followed by three to four inches of 1.5 to 1.75-inch crushed stone, topped by another layer of geotextile fabric.

Step 3: Cover the geotextile fabric, making sure the edges are securely buried, with a minimum of six inches of the footing material of your choice.

The “sandwich” described in Step 2, created by the two layers of geotextile fabric and the crushed stone in between, acts as a water-permeable mechanical barrier that prevents the footing above from sinking into and mixing with the soil below, while in no way hindering drainage. Commercially available alternatives to this “sandwich” exist in the form of footing stabilization grid systems that consist of interlocking panels in a synthetic grid. The grid cells, which are porous to facilitate drainage, are filled in with gravel before being covered by the minimum six inches of footing material – usually gravel. The result is a stable base for the footing that drains well and reduces soil compaction and erosion. These grid systems can be installed throughout the entire paddock or in specific areas as needed.

Several Applications of PP Rainwater Module

1.Rainwater infiltration system
Rainwater infiltration system is a system based on the difference of rain surface and related equipment. The related equipment includes infiltration rainwater inlet, infiltration rain water well, infiltration rainwater pipe and infiltration tank to achieve rainwater penetration.
Infiltration and collection of green space: Rainwater is saved using existing green areas such as large green areas in parks, communities and golf courses. The collection and storage system of rainwater can be built in the area where the ground water is not easy to be formed, the large underground tank can be built and the measures of water saving irrigation can be set up.
Infiltration and collection of pavement: square, district, park road, sidewalks, walkways, bicycle lane.
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2.Rainwater retention system
The underground water tank is assembled into a rainwater detention pond. When it rains, the rainwater flows into the module detention tank through the roof and the ground. After rain and flood, the rainwater is discharged to the designated rainwater discharge port to reduce the discharge pressure of the urban rainwater pipe, and effectively prevent the urban flood caused by the rainstorm.
The stormwater attenuation tank can be installed in all the landscaping areas, lane, parking and other driving areas. The rain water is filtered through the rain water wells or the rainwater control excretory pit, which effectively protects the quality of the water source and reduces the maintenance of the detention module.
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3.Rainwater collection and utilization in the park roof
The rainwater collection system of the park buildings should be combined with the planning and layout of the park buildings, and the terrain and landforms. Use a culvert to collect rainwater, the rainwater is introduced into annular filter tank, laying pebble or gravel and other drainage materials on it. Then rainwater infiltrates the filter tank, enters the reservoir, or is connected to ground plants and vertical plantations of greenery through sink pipes for irrigation of plants.

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Different Types of Rainwater Harvesting System

There are a number of different types of rainwater harvesting system that are used all over the world, the cost varying with the complexity and size of the technology being installed. They all have one thing in common which is to utilise our natural rainfall to supplement the mains supply we all take for granted. The major benefit of rainwater harvesting is that it can be done on small and much larger, even industrial scales.

Many governments have been trying to encourage new builds to include some form of rainwater harvesting system with many commercial premises now incorporating it. Whether it’s on a small scale or larger, the benefits of making the most of the resources we have available has never been more obvious as we face the prospect of climate change. Water harvesting involves relatively simple technology that can be used by both domestic and commercial properties to make a difference.

Domestic Rainwater Harvesting

If you want to go a step further, and reduce your reliance on the mains, then a more complex rainwater harvesting system can be installed to provide for daily living requirements such as washing clothes and flushing the toilet. There are two main systems you can choose to do this:

Gravity feed systems: These are normally positioned at the top of the building and use the power of gravity to propel the water to different parts of the house. They do not need any other power source such as electricity. Water is collected off the roof when it rains and fed directly into the filter system of the tank.

Pump feed systems: The tank in this instance can be at ground level, or even under the ground, and a pump is then used to distribute the water around the house. You can also opt for a combined pump and gravity system that moves the water to the top of the house to another tank where it can be stored before being distributed through the pipes. It’s generally accepted that in domestic situations pump feed systems are usually the more efficient because of the small distance that the water has to travel, despite the fact that they need some amount of electricity to run them. Both systems work the essentially the same way in that they collect water from the roof via the guttering, it passes through a series of filters, and is then stored in a large tank ready for distribution. There are two reasons for undertaking a project such as installing a rainwater harvesting system and that is to reduce your dependence on the mains supply and help cut down the amount of your water bill if you are on a meter. Find out more about whether installing rainwater harvesting is worth it here.
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Commercial Rainwater Harvesting

The difference for commercial premises that have rainwater harvesting is mainly in the size – the general technology remains the same, if a little more hi-tech. For taller buildings gravity feed systems can often be the more economical option because of the higher water pressure that can be generated. Rainwater harvesting module in new builds are becoming far more commonplace with new government guidelines and the requirements of industry bodies such as BREEAM that are trying to ensure businesses become more sustainable. The savings for large scale commercial rainwater harvesting can be quite considerable compared to domestic systems. A tank with a capacity for storing up to 50,000 litres and provides a saving on mains water of nearly 3 million litres a year. It can do this because of the large roof space that is utilised to feed into the tank.
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Other Rainwater Harvesting Systems

Utilising the excess water from our roofs and gutters is not the only way that rainwater can be collected. One of the latest developments is to use permeable paving to collect water as well as systems that are actually built beneath gardens and that provide a sustainable way of reducing the costs of water bills.

How Does Rainwater Harvesting Work

Rainwater recycling involves collecting rainwater from a building’s roof or from any other surface, including nowadays permeable pavements and garden lawns. The rainwater then passes through a filter, which eliminates debris, and is stored in a holding tank placed either underground or the side of a building or in the loft.

This saved water can be pumped to places where it is needed. Since the water collected by most rainwater harvesting systems is not drinkable (without substantial treatment), plumbing regulations dictate that the collected rainwater be passed through a dedicated pipe system, and not the building’s drinking water system.
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Though every system will be different and employ various rainwater collection methods, an average rainwater recycling system will consist of the following elements:

A water storage or holding tank is needed to store the water collected from the roof or other surfaces. The size of this can vary depending on the space available and what it is used for. It can be buried underground or at the side of the house or building. For a domestic property, the tank will normally be fed by the gutters surrounding the house.
A control unit is used to monitor the water level in the holding tank. Some models also provide additional information such as the temperature of the water, pump pressure and fault diagnosing software.
A filter is used to stop debris in the water (such as leaves and dirt) from entering the water tank. For most average sized rainwater harvesting devices, different levels of filtering are required depending on the eventual use of the collected water. For instance, the water needs to be of higher quality if it is being used for washing than if it is being utilized to keep a garden.
For systems that are buried underground a pump is needed to get the water to where it needs to be used (gravity fed systems will not need a pump, instead using a raised storage tank to feed the water to points of use by gravity – though these are relatively rare for domestic premises).
A separate pipe system for your harvested water supply will need to be installed, connecting to areas like your toilet, shower or washing machine. You will, of course, need a backup water supply. As the rainwater collection system will probably not satisfy or be appropriate for all of your water demand, especially drinking water, the building will still need to be connected to the mains supply.
There will also need to be backup piping that can cut in if the water tank runs dry, which happens if you have a small installation and a period of low rainfall.

The Future of Rainwater Harvesting
The fact that we use too much water has not escaped the government’s official bodies in recent years. With the growth in population and changes in our climate, we all need to be more responsible when it comes to how much water we use. Rainwater harvesting tanks is now being reinvented for many new builds with the robust guidelines for sustainable housing.

At the present time, we all find it easy to switch on the tap and use what seems to arrive in our homes and businesses as if by magic. The future may well see a more sustainable and efficient way of collecting rainwater and combining it with the mains supply to help reduce our overall usage. Other developments that may ease the pressure on our heavily populated urban areas are projects such as permeable pavements that can be used to collect water for washing cars and watering the garden.

Rainwater Harvesting System impact on Property Price

There is no doubt having a system installed should have a positive effect on the property price of your home.
•    Our need to conserve water and make the most of our resources is likely to increase well into the future, as the population grows and demand increases.
•    Water bills are probably going to rise and any means of reducing that impact can only be welcomed by prospective buyers.
•    A rainwater harvesting system is low maintenance and the cost of running it, in other words the electricity for the pump mechanism, is small.
•    For commercial premises the cost savings offered by a rainwater harvesting system are larger and can provide significant savings for the buying business.

Reducing the Cost of Running a Home
We use around 40-50% of our water for potable uses such as flushing the toilet, washing clothes and watering the garden. For an average family this can help to reduce the cost of mains water by £250 to £300 a year, a saving that may well be more profound in the future if prices start to rise due to demand. The cost of electricity, for example, to run the pump can be as little as 15 pence a week.
Simply with the day to day cost savings, your installed rainwater harvesting system is having a positive impact on your property price. The more water you use, the more of a saving you are going to make – and that applies to large commercial premises to an even greater extent.
If your area is prone to flooding, then providing an efficient RHS is going to help reduce the impact of rainwater coming from your own property as it puts less pressure on the drainage system.
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Property Buyers are looking for Eco-Friendly Homes
We are more environmentally savvy than we were ten or twenty years ago and many prospective house buyers actively search out properties that incorporate green technologies such as solar panels, heat transfer systems and rainwater harvesting.

It’s not just a case of cutting down on installing the systems themselves but the fact that they offer a more sustainable way of living. It has become an important factor for many people who are more conscious of lowering their impact on the environment.

In fact, we are now beginning to see a number of property companies created that are specializing in providing eco-friendly homes and business premises.

The Future of Property Prices and Rainwater Harvesting Systems
New builds are starting to incorporate rainwater harvesting Modular in the planning stages, for both domestic homes and commercial properties. Whilst having a system retrofitted into an old property comes with its costs, the benefits of having one installed can add to the sale value of your home and make it more appealing to potential buyers, particularly as the technology becomes popular and more widely available.

Four Systems Achievement Green Building Rainwater Recycling Application

With the improvement of human living standards, people’s living environment requirements are also getting higher and higher, and the harmonious coexistence of people and the social environment has become the hottest topic today. Green building also become a hot topic.
How green buildings make rain obediently obedient and never let us watch the sea in the city. This article will explain the “four systems” formed by today’s most popular rainwater harvesting and recycling technologies.

1.Rainwater Infiltration System
When the amount of rainwater is too large to cause urban waterlogging, it is best to let the rainwater infiltrate the underground naturally. Therefore, rainwater infiltration system is used to supplement the underground aquifer to prevent the downstream floods caused by discharge of heavy rain. This system can be composed of infiltration tank.

2.Rainwater Retention System
Rainwater retention system is a storage box, also called buffer space. In the event of heavy rains, the rainwater will be stored in the system and then discharged from the designated outlet, it also can prevent urban waterlogging. This system is more suitable for building landscaping areas, lanes and other areas.
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3.Rainwater Harvesting System
In many small residential areas, the rainwater harvesting system is better for saving water. Water saving up to 40%. This system can be composed of rainwater harvesting modules. Set aside suitable land space and build rainwater harvesting system, which can be used for car washing and vegetation greening of residential people.
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4.Rainwater Recycling system
Rainwater recycling system is related to people’s living water, so they need to go through the water treatment process. The system uses a wide range of rainwater, grass irrigation, landscape fountains, flushing, laundry, air conditioning cooling water supplement, and even drinking water.
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Underground water tank from Leiyuan can be use in these four systems with functions of rainwater infiltration, detention and attenuation and has high void ratio and high loading capacity.
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More details please visit www.greengrassgrid.com.

Why grass bricks will be replaced by grass grid in the future

In urban construction, the real estate development is not only to meet people’s housing needs, but also to advocate greening and improve the green area. Although the grass can grow in the crevice and survive in the harsh environment, in city, the green lawns and parking lots paving grass bricks are often subjected to artificial trampling and wheeling, resulting in a reduction in green area.
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Grass grass and grass bricks is a tool to support the growth of grass, for the grass to share the pressure, to maintain the greening rate of green space. They can meet the parking lot, green area, fire channel, park green and other venues needs.

In the present trend, grass bricks will be replaced by grass grid in the future. why? What are the advantages of honeycomb plastic grass grid for city greening?
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The following is a comparison.

Item Plastic grass grid Grass bricks
Material Made of HDPE material, lightweight Concrete is used as raw material, heavy
Size Dimension design, maintenance simple, install quick, save labor The size is small and the pavement roughness is poor
Greening rate Over 95% Only about 30%
Bearing capacity Paved collectively, large area with low setting volume. Can satisfy the parking of the bus, fire truck Paved separately, small individual area with high setting volume
Strength and stability High strength and excellent stability. Convenient splicing, small gap, wear-resisting, good toughness Low strength and large gap, easy to crack and tile
Survival rate 95% soil area, the water can be reserved, no acid or alkaline threat, and grass may flourish The concrete area is larger than that of soil, water is absorbed by the tile and then vaporized. The tiles are alkaline which might corrode the roots
Environment protection Less dust and noise, and recyclable Noise and dust, and unrecyclable

The original grass bricks will gradually withdraw from the stage of history, and will be replaced by recyclable plastic HDPE grass paver grid.

Plastic grass reinforcement grid system from Leiyuan has high load capacity, which satisfies the parking and rolling of heavy vehicles. It also provides water storage function, which is beneficial to the lawn growth.