What is a Divertron and What Does it Do?

Divertron Standard and X version. With

Divertron Standard and X version

The Divertron is described as a ‘6 Inch Multistage Sub Booster Pump with Integral Control’. You may be asking yourself ‘what does all that mean?’ – read on to find out.

‘6 Inch’ refers to the diameter of the pump which is an important factor when using it in an application where space is at a premium, i.e. boreholes.

‘Multistage’ refers to the pumping technology used, in this case there are multiple impellers stacked on top of one another. Each impeller creates pressure by rotating at a high speed and using the centrifugal force to direct the water from its centre to its edges. That water is ejected and passed through channels to the centre of the impeller above it where the process begins again, adding further pressure – all things being equal, more stages means more pressure.

‘Sub’ indicates this pump is submersible which means it should be submerged into water when in use. Of course, a submersible pump is fully water proof by design which is an advantage but most of them actually need to be submerged as they use the water to disperse the heat produced while in action.

‘Integral control’ refers to the technology used to turn the pump on and off – in this case it is internal. The Divertron’s integral control system is actually a pressure switch on the output which allows it to turn the pump on when it detects a drop in pressure, caused by opening a tap on the outlet side. This allows you to start the pump by simply turning a tap on – great for irrigation.

There are two types of Divertron pumps and each have two duty options (outlined below):
DIVERTRON 1000 M: Can achieve a maximum head of just over 36 meters and a maximum flow rate of around 1.4 litres per second. It has a screen filter which will ensure no larger objects are sent through the pump.

DIVERTRON X 1000 M: Can achieve a maximum head of just over 36 meters and a maximum flow rate of around 1.4 litres per second. It has a stainless steel ring for use with a suction kit.

DIVERTRON 1200 M: Can achieve a maximum head of over 47 meters and a maximum flow rate of 1.4 litres per second. It has a screen filter which will ensure no larger objects are sent through the pump.

DIVERTRON X 1200 M: Can achieve a maximum head of over 47 meters and a maximum flow rate of 1.4 litres per second. It has a stainless steel ring for use with a suction kit.

We have the complete Divertron range on sale at the moment (July/August 2017) which means you can get your hands on one of these incredibly useful pumps at the lowest price anywhere on the internet.

Atac Staff Explore Depths For Sewer Safety Training


ATAC Solutions’ staff took a journey to the depths to experience working in a sewer environment. It was part of a Confined Space Training course held at the wastewater specialists’ premises in West Farleigh, near Maidstone. A two-tiered mobile unit, which featured a configurable tunnel labyrinth, was hired to replicate oxygen-deficient, belowground conditions.

Reis Gilham, Sales Executive at ATAC, one of eight staff members to take part in the exercise, said: “The idea of taking part in a confined space training exercise was slightly daunting initially. I really didn’t know what to expect, but found the whole experience totally fascinating.”

It’s estimated at least 15 people are killed in the UK each year whilst working in confined spaces. Many deadly gasses lurk underground which make sewer cleaning and maintenance a particularly hazardous occupation. Exposure to sewage or its products can also result in a number of illnesses including hepatitis, gastroenteritis, diarrhoea and vomiting.
During ATAC’s confined space training exercise, which was run by ESS Salesforce, staff were shown how to wear a gas mask correctly due to the deadly fumes present in sewers. They also learnt to read volumes of noxious activity via a gas monitor.

For their belowground training, teams entered the mobile unit in pairs. The facility consisted of 44 metres of configurable tunnel labyrinth, three access points allowing horizontal and vertical entry and exit, as well as LED and emergency lighting. Staff were required to search for certain lights and via radio, relay gas readings to an ‘outside’ team. As part of the exercise, an alarm sounded to indicate teams had entered a ‘vulnerable situation’, requiring staff to wear gas marks and make an emergency exit.

Reis Gilham, who joined ATAC in 2016, added: “It was only an exercise, but a siren’s sound in an enclosed environment without lights can still unnerve. I’m pleased to say we escaped, and the whole training exercise proved an enjoyable learning experience.”

Formed in 2007, ATAC is one of the leading environmental engineering companies in the UK contracting to both domestic, and blue-chip companies throughout the UK. The company has maintained a zero on-site incident record during its 10-year operation.

Adam Colley, ATAC’s Commercial Director, said: “We have a perfect staff safety record, which initiatives such as confined space training will help uphold. Staff health and safety is our number one priority. We thank all those who took part in the exercise for taking it extremely seriously and acknowledging the dangers present in belowground working, particularly within sewers.”

Going Underground: Confined Space Training For Safe Sewer Working


Entering sewers or tanks requires more than a hard hat, hi-vis and torch. Personnel must be equipped with sufficient knowledge and experience before descending these deep, dark, damp realms, hence ATAC Solutions provides Confined Space Training: an examining exercise in an oxygen deficient atmosphere. Reis Gilham, a Sales Executive at ATAC, underwent his first day’s training in June. It proved to be an enlightening experience, despite the pitch-black conditions, as he explained.

“Initially, the idea of taking part in a confined space training exercise was slightly daunting as I really didn’t know what to expect. Once we got into the swing of things, however, any trepidation soon vanished and I found the whole experience totally fascinating.

Before taking the plunge into the pitch dark, our group was given a health and safety tutorial on the many life-threatening risks associated with a job, which on the face of it at least, appears fairly simple and straightforward. Our group learnt how different gasses can be harmful in a confined space area; how to identify them and how to read gas volumes via a monitor. We also learnt about precautions needed to be taken when entering a confined space with gasses present. One of the most important aspects was how to wear a gas mask correctly, as fumes released in sewers can kill. This was followed by a short paper test to ensure we’d absorbed the vital information we’d been given, and a practical demonstration on using a gas mask, alarm and harness underground.

Then came the moment of truth: we faced our first confined space test. Okay, so we weren’t descending deep beneath the road’s surface as staff would do in an on-the-job situation, but we were required to enter the dark, dingy, smelly chamber of a mobile confined space training unit – supplied by ESS Salesforce – which replicated a sewer environment some would one day confront for real. The two-tiered mobile unit consists of 44 metres of configurable tunnel labyrinth, three access points allowing horizontal and vertical entry and exit, as well as LED and emergency lighting.

We entered the unit in pairs and were instructed to search for certain lights. Via radio, we relayed our gas readings to our ‘outside’ team and informed them we were okay. Then suddenly an alarm sounded. It was part of a scenario to alert us to the fact we were in a vulnerable situation. It was only an exercise, but a siren’s sound in an enclosed environment without lights can still unnerve. We had acted quickly, put on our gas masks and exit the facility as soon as possible, using only torches as a guide.

I’m pleased to say we escaped, and the whole training exercise proved an enjoyable learning experience. I’m now confined space-trained, which means even from the comfort of my office, I can identify which equipment is needed to protect against risks associated with sewer entry.”

Atac Adds To Tanker Fleet To Increase Wastewater Service Offering


ATAC Solutions has increased its capacity as a UK wastewater treatment specialist by adding a top of the range Jetvac tanker to its burgeoning fleet. Capable of carrying 3,200 gallons of wastewater, it will enhance the company’s customer service provision throughout southern England and London and enable its teams to provide fast response and recovery to its domestic, commercial and blue chip clients.

The Jetvac has been specifically built to ATAC’s specification from stainless steel to guaran-tee its long-term operational effectiveness. Its availability will be particularly vital in southern England as the area is experiencing lower-than-average rainfall, with the unbroken dry spell resulting in hard, unyielding ground – ideal conditions for flooding in the event of a sudden, prolonged downpour.

The Jetvac comprises a function that enables the user to vary the amount of clean water and debris carried in the tank. As well as a superb vacuum facility, the tanker features a powerful jet feature, capable of releasing 153 litres of water per minute at a pressure of 130bar. This makes it ideal for cleaning treatment plant facilities such as sewerage pipes and interceptors.

Adam Colley, ATAC Solutions’ Commercial Director, said: “The commissioning of an addi-tional tanker demonstrates our commitment to optimising our customer service offering. It will enables us to respond even more quickly and effectively to critical situations.”

ATAC Solutions’ tanker fleet collects hazardous and non-hazardous liquid which is potentially harmful to the environment and local community. Its 24-hour emergency maintenance hot-line offers round-the-clock reassurance to a number of assigned independent industrial, commercial and domestic sites throughout Kent, Sussex and London.

ATAC Solutions Gets to the ‘Root’ of the Problem and Saves the Day Again!

Root removal, jetting, atac,

ATAC’s Confined Space Team’s Root Removal: Before and After

Roots and drainage systems do not mix well. The roots tiny feelers can worm their way through little cracks in manhole walls as they explore, searching for sources of water and nutrients. Although we humans would not wish to dine on the matter often found in manholes, the same cannot be said for plant life… they love it. So, when the root’s feelers detect such a banquet, they send an open invite out to all their friends and most of them move in for good.

This phenomenon, in time, can lead to really stubborn blockages in a drainage system and, if it is not caught early enough, can cause some very real and expensive damage. Usually, the first sign of a problem is seen by the drainage system backing up which can lead to nasty smells and untreated waste exiting the top of the manhole, pooling on the surface.

Just a few days ago ATAC Solutions received an emergency call out for exactly this issue at a local tourist attraction. Stephen Peacock, a very experienced engineer, immediately attended the site in a tanker with the aim of addressing the issue and identifying its cause.

Stephen used the tanker to suck out all of the backed up waste from the manhole and saw that a root network had taken hold and sediment had built up around it, creating a stubborn fatty blockage.

In order to regain free flowing drainage, Stephen cleared the run by using a warthog spinning jet which cut though the fatty sediment that was causing the immediate blockage.

Later, ATAC Solutions sent their fully qualified Confined Space entry team to finish the job. They used high pressure water jetting to cut the roots and subsequently extracted them all (image above: Before and After).

The Confined Space team jetted the pipework between the manhole and the treatment plant followed by a CCTV inspection to confirm the clearance was successful.

It is possible to avoid this kind of issue though regular inspection. Catching it early will mean it is a much smaller job to rectify and you will be far less likely to experience your manholes overflowing with untreated waste. Why not save yourself a lot of hassle and get in touch with ATAC Solutions to arrange for an inspection.

The team at ATAC solutions are always happy to provide friendly advice and welcome calls to 01622 882 400 or on the 24 hour emergency hotline on 03333 111 030.

ATAC Anniversary Denotes Decade Of Wastewater Expertise

Wastewater management specialists, ATAC Solutions, is celebrating a decade of providing environmental solutions to domestic, commercial and blue-chip companies across the UK.

The company, founded in 2007 by current directors Andrew Turnill and Adam Colley, began as an engineering consultancy business; their team’s mechanical and electrical expertise supplying system solutions to the UK’s armed forces. By year-two its service division was well established, maintaining more than 500 individual sites across south east England. Today, ATAC Solutions is one of the leading environmental engineering companies in the UK contracting to companies renowned nationwide.

Adam Colley, owner and Sales Director, said: “Ten years is an incredible milestone for ATAC to achieve and we’re really proud of how far we’ve come in that time. It goes without saying that the knowledge, expertise and commitment from our staff has helped us evolve the company in the way we have. Further to that, the many clients we’ve worked with along the way have made the company the success it is today. We wouldn’t be here without the loyal staff and clients we have, and for that we’re really grateful”

Since the company’s formation it has established an impressive repertoire of solutions for many clients who sleep soundly knowing ATAC’s robust treatment solutions are taking care of the effluent while they take care of their busy everyday lives.

In the coming months, ATAC will be trialing new wastewater technologies to help water companies across the country meet stricter standards set out by the Environment Agency. Adam Colley added: “There are always challenges to overcome in this industry, therefore there is no room for complacency. We’re really excited to see where the next 10 years takes us as a business.”

How to Read a Pump Curve

Atac diagram


When selecting a pump you will need to know if it is fit for purpose so it will perform efficiently throughout a healthy and long life. The main way of doing this is to check the pump’s curve by using a graph which displays a pumps duty under different conditions – this can normally be found on the pump’s datasheet and looks like the below:

Atac graph

At first, this graph may feel a little overwhelming but I promise you once you have read this article it will make a lot of sense.

This graph has a number of symbols and labels such as H (m), Q (l/s), Q (l/s), a continuous line, loads of numbers and ‘U5K’ inexplicably hovering in the top left corner. Let’s go through them one by one and give them some meaning.


This simply denotes the name of the pump the graph refers to. In this case the pump curve is describing the Jung Pumpen U5K pump which is a submersible pump mainly used for drainage.

The formatting of pump curves differ depending on the manufacturer of the pump and what the curve is intending to show. For example, if the graph was being used to describe multiple pumps there would be a line for each of them and each would have their own label.

H (m)

H stands for ‘Head’ which is a term used to describe how much pressure the pump will have to overcome. Most of this pressure comes from the resistance caused by gravity when pumping the water vertically, however, some ‘head’ can be caused by other factors but this will be covered by a separate article.

The (m) stands for the unit of measurement (Meters), therefore, H (m) is Meters Head or Total Meters Head. To keep things simple, imagine Meters Head as the vertical distance between the position of the pump and discharge point – technically known as Static Head which is a major factor of TotaAtac diagraml Head.


As the ‘H (m)’ is labelling the horizontal axis of the graph we know the numbers that run up the side of it must describe the number of Meters Head, making the U5K have a maximum head of just over 8 meters.

Q (m^3/h)

The other axis of the graph describes the flow rate which is the amount of fluid that passes a given point per unit of time. This can be described in various ways but this graph primarily uses ‘Q (m^3/h)’, I will break this down below.

Q = Flow Rate

M^3 = Amount of fluid in meters squared

h = Time frame in hours

Therefore, when we look at the numbers that run along the bottom of the graph we can see the maximum flow rate (Q) for the U5K is about 11.5 cubic meters per hour or 11.5 (m^3/h).

In terms that are easier to visualise the U5K can pump a maximum of 11,500 litres per hour (one cubic meter is the same as 1000 litres).


Q (l/s)

This is just another way to express the same as the above but using different units. This time the flow rate (Q) is described using litres (l) per second (s) and has its own scale (0-3). On this scale we can see the U5K has a maximum flow rate of about 3.25 l/s.

One way of confirming this is to divide the previous figure of 11,500 l/h by the number of seconds in one hour (3,600), which gives us 3.19 l/s which is very close to the sum we came to a moment ago (3.25 l/s).


Continuous line

OK, so we now know how to read the maximum head and flow rate on the graph. Now it is time to look at how to see if a pump is suitable for a particular application. This is where the continuous line comes into play.

Say we have a need for a pump that can pump 10 cubic meters per hour (m^3/h) at 4 meters head [M (h)] and we wanted to know if the U5K would be suitable for the job. We could use the pump curve (continuous line) to find either what flow rate could be achieved for a given head or vice versa. Let us input our requirements one at a time.

If we start by finding the required head (4 meters) on the vertical axis and follow the horizontal line to where it meets the pump curve. At this point on the curve follow the line down to the bottom which brings you to a point just before the number 8 which tells us the following:

At 4 meters head this pump can achieve just under 8 cubic litres per hour [8                       (m^3/h)] which is less than what we require meaning this pump is unsuitable.

N.B. It is good practice to find the flow rate for a given head rather than the other way around.

Sometimes, when sizing up a pump you find the requirements fall on the pump curve but it is close to one end or the other. This means the pump will be able to do the required but it is still not ideal. Generally speaking, a pump is happiest while working around the middle of the curve.

Imagine what is happening while a pump is working on the far left of the curve. Although it may be delivering the desired flow rate at the given head, the motor will be running at the upper edge of its comfort zone while pumping less fluid than optimal. This means there is less opportunity for heat to be displaced as fluid is the key component in cooling the pump. Due to this, it is likely the life of the pump will be significantly shortened and the pump will become very uneconomical.

On the flip side, if a pump was performing on the far right of the curve the motor will be almost freewheeling as there is far less head, therefore, less pressure to overcome. A pump running continuously at maximum speed will soon have its impellor degrade and experience cavitation which will drastically reduce its efficacy and it will be far less economical.

In conclusion, when sizing up a pump you will need to know what you want to achieve in terms of head and flow rate and look at the pump curves for any pumps you think may be suitable. It will be a case of trawling through all of the information available for each pump until you find something you are happy with.

Alternatively, you could give us a call on 01622 882 400 and one of our friendly staff will help advise on the most suitable pump for your requirements, totally free of charge.

Atac ingenuity ensures natural order is maintained during countryside plant repairs

IMG_5659Wastewater treatment specialists, ATAC Solutions, provided an innovative solution to ensure complex repairs to a failing sewerage plant were completed without disruption to a tranquil area of countryside.

Its engineers were called to an area of outstanding natural beauty in the New Forest, location of a sewage treatment works owned by Southern Water. The site, which is adjacent to an idyllic river walk between Beaulieu village and Buckler’s Hard, required refurbishment to maintain its long-term reliability.

With the plant’s units situated at ground level or below to minimise visual impact, engineers faced a challenge in rectifying the problem without causing unsightly disruption. The site, built to serve a population of about 250 people, compromised underground septic tanks, a lift pumping station and a flow-split chamber which channelled flow towards a Rotating Biological Contactor (RBC) or a Submerged Aerobic Fixed Film Reactor (SAFF) before passing through a conical humus tank. Designed to be non-nitrifying, the plant does achieve some nitrification.

Following intense investigations, the RBC was found to have expired and required considerable repair. However, due to the unit’s age, spares were unavailable. Rather than remove the below-ground, concrete-encased unit and risk disturbing the scenic surroundings, engineers decided a more practical, and aesthetically-pleasing solution would be to replace the malfunctioning equipment inside. Process calculations were run and a design was developed to manufacture two, self-contained SAFF modules equal to 18m3 total media volume. The units were constructed off-site before being lifted into the prepared RBC body. Blowers were also replaced as part of the upgrade. These are now providing air for both sections of the plant and operating with more energy efficiency than previously.

To ensure the site maintained its regulatory compliance throughout repairs, ATAC supplied its own temporary treatment equipment. The entire refurbishment was completed in two months, resulting in a plant with excellent effluent compliance; long-life projection for Southern Water, and an unspoilt view for members of the public

Top 10 Considerations When Choosing a Borehole Pump


The increasing cost of water, coupled with the shortage of groundwater, leaves both domestic and commercial customers with the need for alternative methods to supply clean, naturally filtered water for applications such as irrigation and drinking water for animals. For some however, the problem is reversed – a high water table can render land unusable. Whether you’re trying to lower the water table or find a cost effective solution to watering your plants, borehole pumps can provide the perfect solution.

However, choosing a borehole pump can be a difficult decision considering the large range available and number of variables to consider. So, how do you decide which one is right for the job? Our handy list of 10 considerations to choosing a borehole pump will help make this decision easier.

1)       What is the application of the borehole pump?

Once you know what you want to achieve with the borehole pump you can begin to plan your system. Are you hoping to irrigate a garden? Store water in a tank? Lower the local water table? All of these things, and more, are possible but they all have very different factors to consider.

2)       What is the diameter of the borehole?

You must know the size of the borehole to ensure it fits correctly. The smaller the borehole, the smaller the pump would need to be and this would mean the pump would have a tougher time pumping the water to the surface.

For this reason, a pump which is smaller in diameter would need to have more stages to achieve the same duty, which tends to increase the price of the pump. That said, it is cheaper to drill a smaller bore hole than a larger one, so you will have to find a balance you are comfortable with.

3)       What is the average depth of the water level?

It takes a lot of effort to move water against gravity and with every 10 vertical meters an extra bar of pressure is needed to overcome it. Therefore, it is important to know the average depth of the water to gain an understanding of the power required in your borehole pump.

4)       How far away is the water being pumped to?

Once you know the vertical distance you intend to pump the water, it is time to calculate the horizontal distance between the top of your borehole and the destination of the water. The further away it is being pumped, the more pressure is needed to overcome factors such as viscosity which restricts the flow of water. Although the effects of viscosity are relatively small they can mount up when pumping over a large distance.

5)       What is the size of the pipe (diameter)?

The diameter of the pipe is an important factor. Essentially, the rule is that a smaller pipe diameter will cause more friction than a larger pipe (all things being equal), therefore, more pressure would be needed to overcome the pressure loss caused by the friction.

6)       What is the above ground elevation of your pipework?

Make note of any elevation between the top of the borehole to the highest point the water will be pumped to. This figure combines with pipe diameter, pipe length, standing water level and drawdown level to arrive at a total system head.

7)       What sort of flow rate would you need to achieve?

It is important to know what flow rate you hope to achieve, for example, if you were sizing a borehole pump up to supply a sprinkler system you would need both pressure and flow to make it work effectively.

8)       Do you have a single or three phase power supply?

Some borehole pumps are only available in either single or three phase versions, therefore, you will need to know what power supply you have available as this will limit your options.

9)       How will the pump be controlled?

Will you require the pump to be controlled automatically or manually? This really depends on what you hope to achieve with your system. For example, if you are planning on reducing the local water table it may be worth using an automatic borehole pump. That way, when the water is brought to its desired level, the pump will turn off automatically and wait for the water level to refresh, at which point the pump would begin pumping again.

10)   What is the refresh rate of the borehole?

Refresh rate describes the time natural water level would recover if pumping was stopped. If, for example, your aim is to reduce the local water table, you would have to ensure the refresh rate was not higher than the flow rate your system could achieve. Imagine if you had a half filled barrel of water and every minute you took one bucket of water out of it but put two back in, the water level would rise rather than fall.

As one of the leading providers of water pumps, ATAC Solutions’ team of knowledgeable and experienced advisors are always on hand to help you select the best pump for your job.

Atac Solutions – raising levels of quality management


UK specialists in wastewater management, ATAC Solutions, who offer engineered solutions including biological treatment processes and wastewater treatment systems in the domestic, municipal and industrial markets, is to redevelop its quality management systems in order to deliver even higher levels of customer service.

The company is to upgrade its existing ISO 9001 and ISO 14001 Certification – national standards in quality management and national environmental management, respectively – to ensure both meet the revised standard and receive British Assessment Bureau (BAB) accreditation.

The updated procedures will be integrated with a health and safety management system which is designed to optimise working practices and staff training opportunities across all areas of the business.

Jonathan Buckett, Managing Director of Pragmatic Integration, the software company overseeing the systems’ implementation, said: “By upgrading its accreditation, ATAC Solutions is further instilling confidence in its blue-chip client-base that it will complete projects on time and within budget. It takes time and investment to redevelop management systems to gain the very latest national accreditation. In taking the step, ATAC Solutions has proved how totally committed it is to delivering the highest-quality customer service.”

Since its formation in 2007, ATAC Solutions has grown to become one of the leading environmental engineering companies in the UK. The company, based in Maidstone, Kent, offers turnkey packages in wastewater treatment service, which include everything from repairs and maintenance on a wide range of pumping systems, to drain-jetting, product sales and equipment hire.

As well as upgrading its quality management systems, ATAC Solutions is also introducing a P-IMS online application system which will enable the company’s staff to gain instant access to management documentation. This will prove particularly useful for site engineers to validate training or equipment certification.

Jonathan Buckett, whose company is installing the system, said: “The online application programme means the company’s management systems, along with important project-related documentation, are available to all employees at all times via phone or tablet. It’s another example of how ATAC Solutions is streamlining its procedures for the ultimate betterment of the customer.”