Quality experience for a quality experience.

With over 30 years experience in cleaning pumping stations, digester,
lagoons and other tanks. Our crews provide quality.
No matter where you send them.

under ground vacuum service

Tank Cleaning. Simple by design.

Quality and Safety

Wessuc's tank cleaning crews are equipped to handle any tank cleaning project. Site conditions and project parameters are investigated prior to arrival and essential details are passed on to our trained operators. Complex safety issues can be addressed before staff reach the site so that Wessuc personnel can focus on the task at hand.  All aspects of the job are planned for ahead of time. Making your job simple.

Boldly go!

We go where most people will not. Our trained staff have experience cleaning the following:

  • Digesters
  • Aeration tanks
  • Clarifiers
  • Scum pits
  • Grit channels
  • Pumping stations
  • Incinerators
  • Water towers
  • Water filters
  • Lagoons

Where's Wessuc.

We're not always easy to find, though you may have seen us recently operating in one of these areas:

  • Brantford
  • Barrie
  • Ottawa
  • Waterloo
  • Toronto
  • Innisfil
  • Hamilton
  • Halton Region
  • Norfolk
Our work takes us throughout the province of Ontario.
In the pumping station.

Your clean out needs?

Whether you need to complete maintenance, expand tank capacity, or provide access for new construction. Wessuc can help you clean all your tanks or lagoons.
Contact us to find out how.

Wessuc dewatering services. A solid advantage.

Dewatering sludge

Turn key mobile dewatering solutions.

Wessuc provides dewatering services for municipal, and industrial clients. Our experience with a wide range of equipment enables us to provide a cost effective and efficient solution for you. Wessuc has the ability to mobilize on site in remote locations to satisfy any of your dewatering needs. The equipment will come fully staffed to ensure that the job is done right.

maximum effluent quality

Our rotary vac drum dewatering unit allow us to dewater a large variety of sludges, including sludges generated by, Water and Wastewater Treatment Plants, Ceramic Manufacturing, Metal Plating & Finishing, Chemical Processing, and Steel Mills. This unique machine enable us to obtain unheard of effluent quality, with total suspended solids returned to the plant under 16 mg/L. Low energy requirements and high quality effluent ensure our mobile dewatering operation will have little impact on any size facility.

Equipment Comparison

Rotary Drum Belt Press Centrifuge
Power Use Low (100-250 amps) Medium (200-400 amps) High (250-500 amps)
Water Use Low High Medium
Effluent Quality Excellent (15-20 mg/L TSS) Poor (2000-3000 mg/L TSS) Poor (2000-4000 mg/L TSS)
Polymer Use Low Medium High
% Solids Produced 20-45% 12-40% 16-35%

Revolutionary dewatering technology.

Wessuc’s rotary vac drum works by creating a vacuum inside the drum drawing the liquid through a filter media covering the drum surface. Typically a polymer is added to the sludge influent to aid in the water separation process. The vacuum draws the slurry onto the drum and the water out of the slurry as it travels over the top side of the drum. Thereby turning the slurry into a dewatered “cake” material. A blade then removes the cake from the drum, allowing more slurry to be vacuumed onto the drum surface.

Uniquely equipped.

  • Completely mobile self contained units
  • Produces cake solids from 20-65%
  • Units available to process up to 52 m3/hr
  • Low electrical and water requirements
  • Low polymer requirements
  • Exceptional filtrate quality with reduced hydraulic and biological loading
  • Filtering capabilities down to 0.5 microns
  • Effluent discharge of 16 mg/L TSS
  • No bypassing of polymer or material into the plant

Clean out Operations

See the big picture: Dewatering Services

digester cleaning

water protection

Water protection!

Water Pollution Control Plants (WPCP) and systems such as septic tanks and lagoons, play an important role in the protection of our surface and ground water. WPCPs treat millions of cubic metres of wastewater each day, separating the solids from the water, treating the water and then safely returning the cleaned water to the nearby rivers, lakes or streams. The wastewater treatment is generally done through five stages. The first stage is pretreatment which removes coarse solids (sticks, rags), this is followed by primary treatment which primarily involves the settling of solids, the third stage (secondary treatment) involves micro-organisms consumption of the remaining organic matter, which is then in turn settled out. A fourth stage, tertiary treatment, involves the filtration of the secondary treatment effluent before the fifth stage of being disinfected and discharged into a water body. Specific WPCP may have additional treatment facilities included in their process depending on the type of the raw sewage they receive and the quality restrictions required to protect the water body they discharge into.


Processed organics.

Over 150 enteric pathogens have been found in raw sewage. These are shed in feces in high numbers with the potential to cause disease if transmitted to food or water. Through the wastewater treatment process these enteric pathogens are separated with the solids and undergo further treatment in digesters. Digester treatment can be done in a number of ways depending on the need and capacity of the WPCP. The most common type is anaerobic digestion. Anaerobic digestion is a series of processes in which microorganisms break down biodegradable material in the absence of oxygen. This digestion process is essential in reducing the pathogens and other contaminants in the raw sewage to produce processed organics or biosolids. When operating properly a WPCP can achieve a pathogen reduction of up to 99.9%. To protect the environment the Nutrient Management Act specifies clear limits for pathogen levels in biosolids which are safe for land application. Unless these limits are met or surpassed the biosolids cannot be used on agricultural land.

The need to clean.

vacuum truck cleaning a digester

The build up of debris (gravel, sand, plastics, rags, hair and scum) in the digester effects the efficiency of the digester in a number of ways. As the volume of debris increases the effective tank volume decreases, reducing the retention time in the tank and the effectiveness of the treatment process. Additionally the build up of scum and grit reduces the mixing capacity in the digester, requiring increased maintenance on pumps and heat exchangers due to them plugging up with rags. Regular digester cleaning will minimize the negative impact, of debris buildup before it has a noticeable effect on the efficiency of the treatment process. Debris build up will have a similar effect on other tanks such as aeration and clarifiers. Large lagoons are somewhat unique in that they have a very large holding capacity which typically takes a few decades to effect. The flip side to this is that they take a considerably more effort to clean once the cleaning is required.

Solids build up inside a digester
Double the speed

Dual VAC.

Wessuc's dual-vacuum system provides the ability to maintain continuous suction throughout the duration of a job. This unique system cuts in half the time it takes to clean large tanks. Allowing us to return the tank back to the client as soon as possible.

garbage removal

Taking out the trash.

The physical screening of digester sludge removes the large hair balls, rags and plastics that can build up in a tank or lagoon. If the material is going to land this provides the farmer with confidence that his land is being used environmentally responsibly.

Confined spaces.

Each confined space poses many risks that could potentially harm or kill an entrant. These risks must be evaluated and minimized through proper safe guards. Wessuc plans for safety which enables us to react quickly to any circumstances that may arise during a clean out project.