Toxicity Treatment in a Wastewater Lagoon System

0.4 MGD Wastewater Lagoon System

Municipal wastewater lagoon systems are susceptible to toxic waste poisoning. Toxic loads from residences and businesses are sporadic and difficult to mitigate. When toxicity levels are high in wastewater lagoons, the biological treatment process is inhibited due to loss in biomass.

Wastewater Bacteria, a book by Michael Gerardi, explains that toxicity impacts microbial cellular structure and activity (Figure 1).

Many of the organisms in these systems are unable to grow, divide, and metabolize when toxicants are present. Biomass mortality can contribute to poor wastewater treatment and effluent quality.

Lagoon recovery from toxicity is a slow process if the biology in the system is left to naturally regenerate. To speed up rehabilitation time, bioaugmentation can be implemented.

Adding a concentrated dose of fully functioning wastewater microorganisms helps increase biomass quickly which can stimulate the biological treatment. The following reference of work describes a toxicity treatment with Probiotic Scrubber II (PBII) at a 0.4 MGD wastewater lagoon system.

A lagoon system servicing a town of 3,500 residents experienced toxic waste exposure that severely inhibited the biological treatment process. While on site at the 30 acre two-pond facility, a Utah Rural Water Association Wastewater Technician noticed that the color of the wastewater in the lagoons was unhealthy. 

The water was white and hazy with floating solids. This indicated the biology in the lagoon system was dying. An additional sign of biomass mortality was the unpleasant odors wafting from the ponds.

Figure 1. 0.4 MGD lagoon system after a toxic hit. The wastewater color was milky with floating solids indicating biomass die off.

The lagoon management needed to quickly restore treatment, because the city was highly dependent on the utility. The Wastewater Technician recommended BioLynceus® bioaugmentation to get the system properly processing wastewater again. After a conference call with the city, the decision was made to begin treating the lagoons with PBII.

Ten days after treatment began, the Public Works Director for the city reported that the first pond had returned to a healthy color. The dosage of PBII was decreased to the first pond and increased to the second.

About a month later, the quality of treatment in both ponds improved; The wastewater was returned to a normal color and odors were reduced.

By implementing PBII, the biological treatment in the lagoons was quickly restored. The facility continued to use BioLynceus® to maintain biomass stability in the system.

BioLynceus® ProBiotic Scrubber® II quickly improves wastewater lagoon function after toxicity.

1 Gerardi, M. (2006). Wastewater Bacteria. Hoboken, New Jersey: John Wiley & Sons, Inc.Pp.173-203.

More Articles in This Category

Bioaugmentation Improves Water Clarity in Freshwater Pond

Freshwater Pond 1.5 acres, 6-8 ft depth Algal and aquatic weed growth is a persistent issue impairing water clarity in freshwater ponds. Warm water temperatures and nutrient loads promote algal and plant growth in these systems, especially when organic matter content...

Water Clarity Bioaugmentation in a Freshwater Pond

Freshwater Pond, 2 Acres The water clarity of freshwater ponds can be impaired by organic material which accumulates in response to high nutrient loadings. Eutrophic surface water conditions, enriched with high nutrient concentrations, can promote excessive algal...

Water Clarity Treatment in a Freshwater Lake

Freshwater Pond, 3 Acres, 20 Feet Deep Achieving good water clarity in freshwater ponds can be challenging, especially during spring and summer months. Algal growth is a common issue that increases suspended solids in open water bodies. Excess algal biomass can...

Improving Water Quality in Freshwater Lakes

Maintaining good water clarity is essential when managing drinking and recreational water resources. Freshwater pond systems have constant organic inputs from vegetation, biosolids, and runoff. In the spring and fall, changing water temperatures and densities can...

Bio-Dredging Solids in a Lagoon System

Lagoon System 0.01 MGD Municipalities using lagoon systems for wastewater treatment are often challenged with accumulating solids in their treatment ponds. Municipal wastewater carries high organic substrate loads that can inhibit proper wastewater processing....

Solids Reduction in a Municipal Lagoon System

One of the most persistent challenges in lagoon wastewater treatment is solids (sludge) management. Lagoon systems are designed to reduce organic solids during wastewaterprocessing. Built up sludge is typically dredged from lagoon systems with heavy equipment. Once...

BOD₅ and TSS Pretreatment for an Aerated Lagoon System

Collection System 0.02 MGD Publicly owned treatment works (POTWs) receiving wastewater from industrial sources often experience treatment complications from high biological oxygen demand (BOD5) and total suspended solids (TSS) loads. Establishing an...

BOD & TSS Treatment in an Industrial Wastewater Facility

Industrial Food & Beverage Wastewater Treatment Plant 0.01 MGD Wastewater treatment plants processing industrial wastewater are often challenged with high biological oxygen demand (BOD) and total suspended solids (TSS)loadings. Specifically, wastewater byproducts...

FOG Reduction in Collection System

Collection System 0.8 MGD A growing Wyoming municipality of 10,000 people was having trouble with fats, oils, and grease (FOG) management in their wastewater collection system. The city’s lift stations and main lines were consistently coated with grease. When the lift...

FOG Treatment in a Wastewater Collection System

Collection System 0.7 MGD Persistent fats, oils, and grease (FOG) accumulation can deteriorate wastewater collection infrastructures and increase maintenance demands. Lift stations have many moving parts that can breakdown when FOG buildups are too great....