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Hydro Cleansing Drainage and Sewer Blog

VIPs and Pi Day: The Circle of Wet Waste!

Today we have important American visitors from Rain For Rent. This company is a leading provider of temporary liquid handling solutions including pumps, tanks, filtration and spill containment. Their projects range from flood relief to construction site dewatering, sewer bypasses and industrial plant turnarounds. The company is known for its systems engineering expertise and its ability to tackle complex jobs cost effectively. Family owned and operated since 1934, it serves all 50 states of the USA, Canada and the UK from more than 65 locations.

In honour of them we’re celebrating Pi day! The American calendar reads today as 3.14, the initial figures of Pi. It is the crucial mathematical constant ratio between the circumference of a circle and its radius. Circles are a key element in the construction of our cylindrical tankers. We also have a cyclical nature to our wet waste management.

Hoad and Lake

John Lake, Director of Rain for Rent and Hydro Cleansing’s Director Steve Hoad.

Our innovative tanker Megatron has an elegant cycle which allows for continual work. The beast vacuum sucks in wet waste its recycling unit sifts the water from the other elements of the waste and uses it to continue its high pressure jetting.


rain for rent
water cycle

 

 

 

 

 

 

 

 

The water cycle is a beautiful thing in nature. We contribute to its fluid movement through modern life, in keeping sewers flowing, recycling waste water and much more. As people innovate, water is used in increasingly innovative ways. From harnessing its power to employing it in construction; it is essential in almost any endeavours. Society squeezes every benefit out of water, and it is often left as waste: sludge, slurry, faecal waste etc. At Hydro Cleansing we take these waste products and return them to purified water.

7V7A5032

 

The water cycle flows through both of our businesses and HCL puts it back into its pure form.

 

 

Pump Station Clean: Deep Cleaning Beneath Your Feet

 

As London smoothly continued its business, Hydro Cleansing moved into the dirty underworld of a pump station in West London. After a free site survey HCL established that four screens within it were on the verge of becoming blocked.

Pump Station1

Four vast 4m high screens were located within a 20m deep shaft. This would be an overwhelming job for most companies. Megatron’s force was the only answer!

Megatron pump station

To accompany the beast, HCL sent an articulated bulk tanker to hold the waste and a five man confined space team. The team comprised of one topman, a two man working team and a two man rescue team. With extendible hand lances, the engineers were winched into the large space to blast the rag off even the highest parts of the massive screens. Not only vacuuming the silt and rag 20m vertically, Megatron’s phenomenal jetting force was required to cut the rag loose. A hydrant near the pump station provided a good water flow which was then blasted though the beast’s powerful hoses. These screens were fixed in place. Our confined space team worked using the jetting equipment and crow bars to chop through the rag. Lights powered by Megatron’s generator and the lights on the engineer’s hardhats lit the gloomy space.

The screens are in the pump station to act as grates to filter the solid waste, allowing the liquid waste through. Having not been cleaned for a number of years, the silt was almost at dangerous levels. Rag and solid waste caked the giant grates. Clearing them efficiently was essential. The silt that had built up behind it had to be removed and disposed of immediately. The utility company, who we were working on behalf of, closed the sewer’s pen stocks (large gates that act as valves regulating the flow of the sewer) temporarily which allowed the work to go ahead. A storm hit after the first day. The sewer had to be allowed to flow. Our team returned after the storm’s flow had abated and finished the remaining screens.

Pump Stationbreathing app

 

The engineers had compressed air breathing equipment on site in case it became necessary. Our confined space engineers were winched down into the space. They were equipped with masks and air bottles in case of gas emergencies and we had supplies of compressed air and hose with us in case it was necessary. The team could wear masks and have air pumped from above. Thankfully, this turned out not to be necessary.

Before, during and after cleaning the pump station screens:

BandA Pump Station

 

We were delighted to complete this job for one of the South East’s largest utility companies. Our engineers’ hard work and the almighty force of Megatron allowed them to complete the job in three days!

 

 

 

 

Megatron and HCL Clear Hundreds of Tonnes of Silt

236 tonnes of waste was cleared by Megatron and team.

As well as our beast Megatron, Jack the Giant Slayer, a second articulated bulk tanker, a standard bulk tanker, the 2 man confined space team, a jet vac tanker and a welfare unit all worked on the large job.

 

Fleet A13

 

A large water filled Cofferdam was put in place to stop the river water from flowing through the culvert. We supplied the cofferdam for free. There is a baffle within the dam creating 2 chambers which maintain its stability.

 

Cofferdam

 

This unsightly black bag makes minimal impact on the environment. It uses the properties of water to hold back the river water. It is simply emptied and removed when the job is complete.

The river which runs through the culvert, under the A13, supports the RSPB Reserve at Rainham Marshes. Having been an MOD firing range for several decades it was converted into the nature reserve in 2000. The area is only 6ft above sea level and could easily flood, endangering the birds.

Rainham Marshes-350x233Rainham Marshes

 

 

 

 

 

 

 

With the dam in place, the confined space team beavered away clearing the monumental amount of waste into Megatron’s vacuum.

 

Confined Space Culvert

 

The bulks were filled alternately and took the waste away for disposal, allowing the beast to work continuously.

Job done

 

Sucking at 6000+ cubic feet per minute, Megatron is Europe’s leading vacuum tanker. This raw power from the tankers and engineers allowed this job to be completed in five days!

 

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