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What is a Sewage Treatment Plant?

The definition of sewage (wastewater) is both grey water which is water used in private houses from toilets, dishwashers, sinks, baths and showers and black water which is any water from toilets. This foul water can be treated by using either biological matter to break down the waste or physical treatment using aeration to treat the water.

What are the benefits of rainwater harvesting?

Rainwater harvesting is a simple idea. It’s not complicated. For many, many years people all over the world have been collecting rainwater and putting it to good use. The key is to do it well and plan what kind of system you want and what you want to use the water for, before installing it.

What is Rainwater Harvesting?

Rainwater harvesting, also sometimes known as rainwater recycling, is the collection of rainwater with the purpose of putting it to good use. Rainwater that falls freely from the sky can be used for many things. We don’t need to use mains water for everything! In fact, rainwater can actually be better than mains water for certain things. Rainwater harvesting is a simple process. Typically it involves the following five steps…

What is the difference between a cesspool, a septic tank and a sewage treatment plant?

When it comes to building a property one thing you will need to consider is, where is my waste going to go? In most cases you can just simply connect to the mains sewer network however this may be too expensive to do, or the sewer is too far away for you to connect to. In these cases, you will need to consider, how you are going to deal with your waste on site? You have three options to choose from; a cesspool, a septic tank and a sewage treatment plant.

How To Install a Stormwater Attenuation Tank

A stormwater attenuation tank is designed to collect and store surface water run-off as a result of a storm event. The stormwater is then released from the storage tank at a controlled rate, usually by a flow control, which means that the surface water run-off will be slowly released into a local water course like a river or reservoir, therefore minimising the risk of localised flooding. An attenuation tank can be made up of geo-cellular crates, impermeable geomembrane and protective geotextile, to create a watertight storage tank underground. With every development in the UK needing some form of sustainable urban drainage system (SuDS), it’s important to know how an attenuation tank of this type is installed.

Simple methods of wastewater treatment

Upon first sight the difference between a cesspool and a septic tank may not be easy to pinpoint. However, there are some crucial differences between the two systems and by understanding how each one works, you can make the right choice for your property and land.  Cesspools and septic tanks are two simple methods of wastewater treatment and in this article we explain what they are and how they work in more detail. 

What is the difference between a direct and an indirect rainwater harvesting system?

When it comes to using rainwater for domestic purposes, there are two types of systems that you will have to consider. A direct feed and an indirect feed. Both supply a property with precious rainwater and both include a mains water back up, however they feed the appliances in two completely different ways.

How Do I Install A Rainwater Harvesting System

If you are considering buying a rainwater harvesting system, below we explain what they are, how they work and how to install one in your property. 

When Would You Need a Potable Water Tank?

Potable tanks offer a variety of benefits for homeowners who live in remote areas. But when do you need a potable tank and how can it help? Read on to find out more. 

What’s a combined rainwater harvesting and stormwater tank?

Living in the UK means dealing with a fair amount of rain each year. Depending on where you live it can also create flooding issues, but with the right equipment this can be prevented and the rain used to your benefit around the home. In this article we explain how a combined rainwater harvesting and stormwater tank can help.

What’s a potable water tank?

If your home water is not supplied through the mains system you are likely to have access to local natural resources. This enables you to use spring water shafts to capture natural water that can be redirected into storage tanks. These are known as potable tanks and in this article we explain more about what they and the benefits they can provide.

How do you size a rainwater harvesting tank

If you are considering buying a rainwater harvesting tank you will have to figure out what size you will need. To ensure you make the right purchase we explain how to size a rainwater harvesting tank...

What is an SBR wastewater treatment system?

At GRAF, all our wastewater treatment products use SBR technology, which allows the water to be treated in batches at various points. Below we explain more about what an SBR wastewater treatment system is and how it works.

How to carry out a percolation test

If you are thinking about installing a soakaway or sewage treatment on your land you will have to first conduct a percolation test. Below we explain what this involves and how to carry out a percolation test to produce accurate results.

What are the benefits of a Firefighting tank?

A fire can happen when you least expect, its ignition starting from any number of sources. That’s why it’s important to protect your home as much as possible and investing in a firefighting tank allows you to do just that. Below we explain the benefits of a firefighting tank to help you decide if installing one in your garden is the right choice for you.

What is a Flow Control?

How does a stormwater tank prevent downstream flooding during periods of heavy rainfall? It’s all down to a flow control device that manages the release of water to ensure drainage happens at a rate that protects the local environment. We explain more about flow controls below. 

How to size a stormwater attenuation tank

Before a stormwater attenuation tank can be installed there are a number of things to take into consideration. In this article we discuss the main factors that go into deciding how to size a stormwater attenuation tank.

What’s the benefits of installing a combined rainwater harvesting and stormwater tank?

A combined rainwater harvesting and storm attenuation tank allows you to store rainwater for reuse while also offering better flood protection measures in the event of a storm. Below we explain the benefits of installing a combined rainwater harvesting and storm attenuation tank and why it plays an important role in meeting SuDS regulations.

What are the Different Types of Discharge from a Sewage Treatment Plant?

Properties that are not connected, or have access to, a local sewer will need a sewage treatment plant in order to safely discharge of household waste. If you currently use a septic tank to discharge waste this will have to be upgraded due to recent changes to the law. In this article we explain the different types of discharge from a treatment plant you can use in your garden.

What are the different types of sewage treatment plants available and the benefits of each system

If you are looking to build a property that cannot be connected to the main sewer network, then you will need to install some form of sewage treatment system to process the wastewater so that it can be safely discharged into your local water course or into a soakaway. The most common approach to this is to install a sewage treatment plant. A sewage treatment plant is an off-mains drainage system that treats waste coming from a property, to a point where it can safely re-enter the water cycle or groundwater reserves without causing damage to the local environment or eco-system. However, as you will see when doing your research there are many different types of treatment plants available that work in different ways. Here is a list of the different types of systems available and the key benefits of each type.

What does a sewage treatment plant do?

A sewage treatment plant is simply an off-mains drainage system that deals with a property’s waste on site. It’s job is to treat the wastewater to quality that it can be safely discharged into a local watercourse or groundwater reserves without damaging the environment or eco-system.

Does a sewage treatment plant need a soakaway?

When you are installing a sewage treatment plant you will need to thing about where the effluent is going to go once it has been treated inside the system. There are 3 mains methods of discharge that are available.

Your Questions Answered About Septic Tanks

If you’re in the market for a septic tank for your property, then you’re likely to have questions. Firstly, why might you need one and what does it do?

Why would I need a wastewater treatment system?

here are several reasons why you might need a wastewater treatment system…

How to Calculate the Size of a Rainwater Harvesting Tank?

The right tank size is important for two reasons. Firstly, you don’t want the tank to be too big and collect more water than you will actually use because there is a risk that the water will sit in the tank for long periods of time, and this is not advisable. Secondly, you don’t want to install a tank which is too small if you’ve got the ability to use the maximum amount of rainwater that you can collect.

How to Harvest Rainwater on a Budget

It is our experience that many people think rainwater harvesting systems are more expensive than they actually are. Basic Garden only systems with above ground tanks, automatic submersible pumps and rainwater filters can cost under £500, and full Domestic systems with underground tanks and automatic mains water backup systems start from around £1000 for a small property. Therefore, it doesn’t have to cost a fortune to add this technology to your property. Of course, there are systems with added ‘bells and whistles’ which will cost that bit more for those users who want the best of the best, however if you’re keen to know what options there are to add rainwater harvesting to your property on a lower budget then here are some ideas.

Rainwater Harvesting Standards, Legislation and Regulations

We’ve referred to the British Standard 8515, which is the Code of Practise for rainwater harvesting in the UK, a number of times within several chapters of this book. This standard is in place to help users and installers, and retailers, of rainwater harvesting systems, ensure that systems meet certain requirements. Rainwater harvesting is not complicated and when installed correctly, there is very little that can go wrong with a system. However, as with any new technology, there needs to be standards, legislation and regulations in place to make sure that systems are fitted correctly and that the systems themselves meet with certain requirements.

What’s the Best Rainwater Harvesting System for Me?

Once you have determined what you are going to use your rainwater harvesting system for, whether it’s going to be garden only or a full domestic system, there are several options for pump packages.

What’s the Best Rainwater Harvesting Tank for Me?

When you know what size of tank is required from the tank size calculation, there are then several options on the market supplied in the UK. Many manufactured in the UK, some imported from Germany and other European countries, and many different shapes and options to suit different specific applications.

What is Nutrient Neutrality and What Are The Current Issues The UK is Facing

Two years ago, Natural England advised a number of local authorities in the Solent catchment area to halt the determination of planning applications unless the developments could ensure they had Nutrient Neutrality. And the issue is spreading. David Stagg, technical product specialist for wastewater experts Graf UK, advises housebuilders and developers how to break the deadlock.

What are typical problems with a septic tank?

Septic tanks are usually out of sight and out of mind – until there’s a problem that needs to be fixed. That’s why it’s helpful to know about the typical problems owners have with a septic tank, so you be prepared and resolve them as quickly as possible. Here are some of the most common you need to be aware of.

What are the different types of stormwater attenuation crates and benefits of each?

If you are new to stormwater attenuation crates and are not familiar with the different types of systems that are available, it may be difficult to know where to start. There are 5 main variations to choose from, each one offering different features benefits depending on your drainage need and installation environment. Here we explain more about the different types of attenuation crates and the main benefits of each one.

What are the typical problems with a soakaway tank?

No matter how big or small your soakaway tank, at some point you will experience an issue that requires it to undergo maintenance or repairs. There are several factors that can lead to the failure of a soakaway tank, including things like soil quality, maintenance, and the height of the groundwater ground table. In this article we cover some of the typical problems with a soakaway tank and some of the signs you should look out for.

How Does a Septic Tank Work?

Septic tanks offer a fantastic solution for households that have poor drainage or who are not connected to the local sewer network. They ensure that household wastewater is disposed of safely and efficiently, without being harmful to the local environment. Here we explain what a septic tank is, how it works and how your home can benefit from one.

What are SuDS?

Sustainable Drainage Systems (SuDS) are engineered solutions that are designed to reduce the quantity of surface water runoff that drains into local sewer networks, while also improving its quality. SuDS can manage rainfall close to where it falls, which is where it differs from traditional drainage, all the while mimicking natural systems. Here we explain more about SuDS, what they are, the different types and why they are so important.

What are the typical problems with a rainwater harvesting system?

Rainwater harvesting systems are a fantastic way of recycling water runoff from the roof of your home so it can be reused in the garden and around the property. To get the most out of the system you need to ensure it is set up property and well maintained, which will help you avoid any unnecessary issues. Here we explain more about the typical problems homeowners experience with a rainwater harvesting system and what you can do to avoid them.

What is the difference between an attenuation tank and a soakaway tank?

Attenuation tanks and soakaway tanks both hold water and appear to work in the same way – but there are some important differences that make them completely unique. Here we explain the difference between attenuation tanks and soakaway tanks to help you choose the right one for your project.

What are the different types of rainwater harvesting systems & how do they work?

More people are becoming aware of the benefits of rainwater harvesting. It’s an eco-friendly solution that helps the local environment while also reducing water bills in homes that have meters installed. There are a variety of different types of rainwater harvesting system available and here we explain how they work, and which one could be best for your home.

How does a sewage treatment plant work?

Around 5% of UK homes are too remote to connect to the main sewer system and instead rely on septic tanks and sewage treatment plants to dispose of their household waste. These systems are essential for off-grid houses, farms and businesses, and here we explain how a sewage treatment plant works, what size you may need, legal requirements and more.

Why is an attenuation tank needed?

Stormwater attenuation tanks are systems that many people aren’t aware of, despite the important role they play in our everyday lives. This is because they are installed underground and quietly work away dealing with excess water run-off that local sewer systems are unable to cope with. They can be installed in public and domestic locations and help to reduce the threat of localised flooding. Here we explain what an attenuation is, what it does and why it is needed.

Why rainwater harvesting is important

As our fears about climate continue to grow, sustainability has become one of the most important words in all our lives. Rainwater harvesting offers an eco-friendly way of reducing the amount of water we use, which could be critical in years to come. Here we explain why rainwater harvesting is important and how it could help combat a growing water crisis in the UK.

How does a stormwater attenuation tank work?

Attenuation tanks and systems come in all shapes and sizes and can be used in a variety of environments. They play a vital role in the everyday protection of our environment by storing and releasing excess rainwater that is unable to naturally filter into the ground. In this article we explain how an attenuation tank works and go into more detail about why they are needed.

How Does Rainwater Harvesting Work?

Rainwater harvesting is quickly increasing in popularity with homeowners across the UK who are discovering the many wonderful benefits it brings to their lives. But do you know how a rainwater harvesting system works? We explain how below.

Why is a septic tank or sewage treatment plant required?

When it comes to wastewater treatment systems there is always a choice to be made between septic tanks and sewage treatment plants. Here we discuss why a septic tank or sewage treatment plant may be required and how to choose the right system for your home.

What are attenuation crates?

When there is a storm event, towns and cities will experience a large amount of rainfall in a short space of time, which can pose problems for the mains sewage network, leading to localised flooding. Attenuation crates offer a solution to this problem, but what are they and how do they work?

What does a sewage treatment plant do?

Sewage treatment plants are a great option for properties that are not connected to the main sewage network. Here we explain more about what a treatment plant does and discuss some of the other important factors you need to consider.

How does a septic tank work?

Septic tanks are an ideal solution for rural households or properties that are suitable for connection to main sewer networks. They provide a variety of benefits for the home and local environment and here we go into more detail about how a septic tank works and much more.

How does a rainwater harvesting system work?

According to the Energy Saving Trust, the average UK roof collects around 85,000 litres of water a year. But instead of letting this water flow away into the drain and into local sewer network, what if it could be repurposed and used for things like flushing toilets, washing clothes and watering the garden?

What Is Water Neutrality

Water neutrality is becoming increasingly important as the world’s population grows and the demand for water increases. Sir James Bevan, who is the head of the Environment Agency recently said recently “the country’s running out of water.” What he meant was that as a result of climate change and the increasing population we are using more water than we are collecting. This is making us less water efficient than we need to be.

What are the different types of rainwater harvesting tank?

Once you’ve made the decision to invest in a rainwater harvesting tank, you then need to settle on the type of system you want to install. Here we look at the 2 types of underground tanks and aboveground models, two of the most popular types of rainwater harvesting tanks around.

What is Water Neutrality, and How Does It Affect New Construction Developments in the UK?

The concept of “water neutrality” has been around since 2006-2008, and some definitions have been offered to explain what water neutrality is. However, in 2009, The Environmental Agency (UK) came up with a slightly different definition that has been widely accepted in describing water neutrality. It states that “for every new development, the predicted increase in total water demand in the region due to the development should be offset by reducing demand in the existing community.”

What is ‘Water Neutrality’ in new construction developments in the UK

The scarcity of water is a rising issue for the stability of the ecosystem and it can be an impediment to meeting the water demands of buildings in the construction sector. The availability of water has the potential to be a decisive factor in the growth of the construction industry in the United Kingdom. The excessive use of water has become a severe problem and it can restrict new developments in construction. This is because excessive water consumption influences the quantity and quality of available water for new structures in the construction industry. The consumption of water for different purposes by a community is called water footprint.

What is a stormwater attenuation tank?

With more and more developments in the UK being built on green fields it is important to think about how to deal with the increase in surface water run-off and minimise flood risk, as rainwater will not be able to drain into the ground as the land will be covered with impermeable surfaces like, buildings, roads and car parks.

Fighting Fires

A recent project in Loughton, Essex saw the supply of a 52,000 litre Carat XXL tank for firefighting purposes at Oakview Primary School. The tank was delivered within a month of receiving the order and included all necessary connections for firefighting purposes. The growing demand for this product means that it is set to be promoted for specifications in the future. Contact the head office in Banbury for more information.

What can you put into a sewage treatment plant?

Flushing the wrong items down the toilet can cause serious blockages and issues with your sewage treatment plant. To avoid costly plumbing repairs, it's important to know what can and cannot be flushed away. This article breaks down the different categories of items to avoid flushing, including those that can lead to blockages, harm bacteria, and cause biological overloads. It also provides tips on maintaining your sewage treatment plant, such as avoiding waste disposal units and not turning off the system when going on vacation.

How much does a rainwater harvesting tank typically cost?

As sustainability becomes increasingly important, more homeowners in the UK are looking for ways to reduce their carbon footprint and save money. One solution is rainwater harvesting, which involves collecting and reusing rainwater for various household tasks. But how much does a rainwater harvesting system cost and what are the benefits? Read on to find out.

What are typical problems with a stormwater attenuation tank?

Stormwater attenuation tanks are crucial in preventing localised flooding, but before and after installation, there are some things you need to know. From the initial cost to maintenance, exposure to the elements, and water not being collected, this guide covers everything you need to know to ensure your stormwater attenuation tank is operating effectively and efficiently.

How much does a septic tank typically cost?

Those living in rural areas understand the importance of a well-maintained septic tank, which is vital for disposing of liquid waste in the absence of a public sewage system. However, with various factors affecting septic tank prices, finding the right one for your needs and budget can be challenging. In this guide, we cover the costs involved with installing a septic tank, including the material used, labour costs, and maintenance expenses. We also discuss the different types of septic tanks available, including concrete, plastic, and fiberglass, as well as the cost of emptying your tank and how often you should do it.

What Can You Use Harvested Rainwater For?

Before installing a rainwater harvesting system in your home, it's important to know whether you need a garden-only system or a full domestic system. A garden-only system is perfect for avid gardeners who want to keep their plants healthy and alive during a hosepipe ban, while a full domestic system can supply water for flushing toilets, washing machines, and outside taps. The cost of the system varies depending on the size of the tank, type of system, and pump options. Learn more about the costs involved in rainwater harvesting and make the best decision for your budget and needs.

What are the typical problems with a wastewater treatment system?

Wastewater treatment systems are not immune to problems, and one of the most common issues is a bad smell. This could indicate that the system is full, has stopped working, or is taking in the wrong waste content. Other potential problems include a blocked overflow pipe, incorrect connections, and more. To ensure your wastewater treatment system works smoothly, it's important to know who to call in case of problems and keep an eye on its maintenance. This article provides an overview of the most common problems with wastewater treatment systems and what you need to know to address them.

Will a septic tank work without power?

If you're building a house off mains drainage, you may need to install a septic tank to deal with waste on-site. But do septic tanks need power to operate? In this article, we explore when a septic tank may require power and the power consumption of different wastewater treatment systems, including the one2clean treatment plant.

Is rainwater safe to drink in the UK?

While rainwater may seem like a free and abundant resource, it can be contaminated by pollutants and bacteria as it falls from the sky. It may be dangerous to consume if untreated. However, rainwater can still be harvested and used around the home with the right system in place. In this article, we explore the safety of rainwater for drinking and the benefits of rainwater harvesting systems, including the Platin package house ECO-Plus, Carat S package Professional, and Carat S garden Comfort. These systems can help create a sustainable home and save up to 50% on water bills.

How do you size a sewage treatment plant?

When it comes to off-mains drainage systems, sewage treatment plants are a popular option. But before installation, it's important to determine the correct size for your property's requirements. This article delves into how to size a sewage treatment plant, with the number of people it will cater to being a key factor. Learn about calculating the Minimum Population (P) figure and how it affects the tank's performance levels. Whether you have a small or large property, or a group of flats, this guide will help you ensure the correct size sewage treatment plant is installed.

What are the different types of flood defence systems in the UK?

The UK experiences a high level of flood risk every year, with many homes affected by rising water levels. In areas close to rivers or on the coastline, it is essential to invest in flood defence systems to minimize any damage to your property. But what are the different types of flood defence systems available in the UK? From flood barriers and doors to pumps and tanking, we take a closer look at each type to help you choose the best defence system for your home.

What can go into a septic tank?

What Can and Cannot Go into Your Septic Tank? If you're a septic tank owner or considering buying one for your property, it's important to know what can and cannot be disposed of in the tank. This blog provides an overview of what should and shouldn't go into your septic tank to ensure it operates efficiently and effectively. Plus, it answers some frequently asked questions about septic tanks, such as whether they can flood, leak, be uphill from a house, and whether rainwater can be put into the tank. Don't miss the helpful tips on what to avoid flushing down your toilet!

How much does a wastewater treatment system cost?

If you're in the market for a wastewater treatment system, you may be wondering how much it will cost you. The answer depends on many factors, including the size of your property and the level of treatment you need. This blog provides a helpful overview of the different options available, from the most basic cesspool to the high-end biological wastewater treatment plant. Discover the differences in effluent quality, features, and price points to make an informed decision for your property. Plus, learn about the additional costs associated with installation and maintenance.

How do I know if my septic tank or treatment plant needs emptying?

After installing a septic tank or sewage treatment plant, it may seem like everything is taken care of, but regular maintenance is crucial. One of the most important tasks is ensuring that the system is emptied when needed to prevent solid waste build-up. In this article, we explain the signs to watch for and how often the system should be emptied, as well as what to do if there are ongoing issues even after emptying. Don't let a full system cause costly problems - read on to learn how to keep your system in top shape.

How much does a cesspool typically cost?

Are you living in a rural area with no access to the public sewer system? Then you're probably familiar with cesspools, which are essential for collecting liquid waste from households and businesses. But what are they, and how do they compare to septic tanks? In this article, we explore the advantages and disadvantages of different types of cesspools, as well as the cost of installation and maintenance. We also explain why cesspools should only be used as a last resort and the legal regulations surrounding their use. If you're considering a cesspool for your off-mains drainage system, this is a must-read.

Wastewater treatment systems must be serviced & maintained, but by who?

Regular maintenance is key to keeping your rainwater harvesting and wastewater treatment systems working efficiently. Our team has been providing 5-year maintenance contracts for rainwater harvesting systems for several years, and now we're expanding our services to include wastewater treatment systems. We've recently set up a network of service engineers across the UK and Ireland, and we're training more companies and individuals to become certified service partners for our treatment plants. Soon, any owner of one of our treatment plants will be able to find their closest service partner for a maintenance contract or service agreement. We're committed to keeping your home safe and sustainable, and maintaining your rainwater harvesting and wastewater treatment systems is an important part of that commitment. Stay tuned for more updates on our new website and service network.

How can floods affect groundwater levels?

Discover how floods can affect groundwater levels and the potential risks it poses to homes and infrastructure. Groundwater flooding is a slower process compared to other forms of water overflow, taking place months after heavy rainfall. But what causes it, and how can it be prevented? Learn more about groundwater flooding and how investing in a stormwater tank can reduce the risk of rising groundwater entering your property.