Waste Water Treatment System

WASTEWATER TREATMENT SYSTEM INDUSTRIAL & COMMERCIAL

Red Deer’s Wastewater Treatment Plant

In nature, bacteria feed on organic waste and break it down into less harmful substances. In Midwater, sewage, or wastewater, goes to the Wastewater Treatment Plant (WWTP).At the plant, natural biological processes are accelerated and combined with physical and chemical treatment processes to remove undesirable solids and microorganisms before the water is recycled back into the Midwater.

Midwater’s WWTP is regulated through an approval from Alberta Environment. Samples are taken as wastewater enters and leaves the WWTP.An on-site laboratory then analyzes the samples to determine the plant’s efficiency and make sure The City is meeting government regulations.This ensures strict environmental guidelines are met.

Renewable Resource

The ultimate objective of a wastewater treatment system is to supply effective treatment methods that purifies water and returns the recycled water back into the ecosystem safely. However, the amount of energy it takes for a wastewater treatment system to accomplish this task is herculean.The configuration of membrane plays a crucial role in determining the process performance. There are mainly three types
of membrane configurations that are being used in MBR technologies: 1) plate-and-frame/flat sheet (FS), 2) hollow fiber (HF),
and 3) multi tubular (MT). In FS membranes, the fluid flows from the membrane’s coated side towards the permeate side. In
MT module, fluid flows from inside towards outside the tube (lumen to shell-side), whereas in HF configuration fluid flows
from outside towards inside (shell to lumen-side).

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Main stages of the wastewater treatment process

Preliminary treatment

Preliminary treatment removes the larger solids from the wastewater stream through a screening process.

Primary Treatment

Once the larger solids are removed, the wastewater is allowed to settle.The settled sludge and risen scum are pumped to other areas of the plant for further treatment.

Water Treatment

The wastewater is allowed to settle. The settled sludge and risen scum are pumped to other areas of the plant for further treatment.

Secondary Treatment

In secondary treatment, the wastewater is pumped into tanks containing bacteria that break down waste products into less harmful substances. 

Tertiary Treatment

The City of Red Deer is installing an ultraviolet disinfection process at the Wastewater Treatment Plant to deactivate microorganisms which remain after secondary treatment.

Equalization Lagoons

Midwater's equalization lagoons provide a holding place for wastewater during high flows and power outages.

Preliminary treatment

Preliminary treatment removes the larger solids from the wastewater stream through a screening process.

Primary Treatment

Once the larger solids are removed, the wastewater is allowed to settle.The settled sludge and risen scum are pumped to other areas of the plant for further treatment.

Treatment

The wastewater is allowed to settle. The settled sludge and risen scum are pumped to other areas of the plant for further treatment.

Secondary Treatment

In secondary treatment, the wastewater is pumped into tanks containing bacteria that break down waste products into less harmful substances. Once this process is complete, remaining solids are removed.
In further digestion process, sludge breaks down into inert biosolids which are pumped to holding lagoons. Produced methane gas is burned in boilers to heat the digestion process. Yearly, the biosolids are spread on farmland as organic fertilizer.

Tertiary Treatment

The City of Red Deer is installing an ultraviolet disinfection process at the Wastewater Treatment Plant to deactivate microorganisms which remain after secondary treatment.

Equalization Lagoons

Midwater's equalization lagoons provide a holding place for wastewater during high flows and power outages.

Pure Water

The wastewater treatment process does not completely remove substances such as paint, petroleum products, industrial chemicals and pharmaceuticals. Never pour these items down the drain or flush them down the toilet. For more information on safe disposal of hazardous materials, website at www.midwater.co
Water entering roadside catch basins is not treated at the WWTP.This water is discharged directly into the Midwater, so contaminants entering these drains will pollute the RMidwater.
For information on wastewater treatment, website at ww.midwater.co

How does a wastewater treatment plant work?

In general, wastewater treatment plants are built to treat waste water and cleanse sludge so that each could be returned to the environment. As these plants eliminate suspended solids, contaminants, and organic material from purified water, the oxygen composition is restored. These results are attained through four divisions of treatments named preliminary, primary, secondary and sludge.

Pretreatment Screening

The pretreatment phase involves filtering large waste materials from the water. The rate of water inflow is also monitored in order to separate organic materials such as sand, glass, and stone.

Wastewater Aeration

After pretreatment, the process of aeration is used to supply oxygen to bacteria for purifying and preserving the wastewater. This development allows for biodegradation, which dissolves the organic substances that contain carbon into smaller compounds to form CO2 and water.

Primary Treatment

Primary treatment consists of the usage of equipment to break down large contaminants. Afterwards, extracting these contaminants is undertaken through the use of sedimentation. Secondary treatment is usually used alongside the primary method for the purposes of further removing organic matter

Post Treatment

Chlorination dosing and UV purification systems are widely used methods to remove harmful microorganisms in water. Chlorine has gained its popularity due to its effectiveness in eradicating disease-causing bacteria.

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