Ocean Water Technologies Inc.

Biological treatment systems are “living” systems that rely on mixed biological cultures to break down the organics and remove organics from solution in the wastewater. Biological treatment is the most important step in wastewater treatment.

A Sewage Treatment Plant (STP), also known as a wastewater treatment plant, is a facility specifically designed to treat sewage and wastewater generated from residential, commercial, and industrial sources. The primary purpose of an STP is to remove contaminants and pollutants from sewage before it is either discharged back into the environment or reused for various purposes.

Here are the key components and processes typically found in a sewage treatment plant:

1. Screening: In the initial stage, sewage passes through screens that remove large objects such as sticks, rags, plastics, and other debris. This prevents damage to downstream equipment and helps ensure smoother processing.

2. Primary Treatment: Sewage then flows into sedimentation tanks where solids (sludge) settle to the bottom and oils and grease rise to the surface. This process, known as sedimentation or primary clarification, removes a significant portion of suspended solids and organic matter.

4. Secondary Treatment: The clarified sewage undergoes biological treatment, where aerobic microorganisms (bacteria and other microbes that require oxygen) break down organic pollutants. This stage typically involves aeration tanks where air is pumped in to support microbial growth and enhance the decomposition process.

5. Tertiary Treatment: In some cases, further treatment is necessary to remove remaining pollutants such as nitrogen, phosphorus, and dissolved solids. Tertiary treatment can include processes like filtration (e.g., sand or membrane filters), chemical treatment (e.g., coagulation and flocculation), and advanced biological treatment (e.g., activated carbon adsorption or nutrient removal).

7. Disinfection: After treatment, the effluent (treated sewage) is disinfected to kill harmful pathogens like bacteria, viruses, and parasites. Common disinfection methods include chlorination, ultraviolet (UV) irradiation, and ozonation.

8. Sludge Treatment: Throughout the treatment process, solids that settle out are collected and processed separately as sludge. Sludge treatment may involve thickening (removing water content), digestion (breaking down organic matter), and dewatering (removing more water to produce sludge cake). The final sludge product may be incinerated, landfilled, or beneficially reused (e.g., as fertilizer).

9. Sewage treatment plants are crucial for protecting public health and the environment by ensuring that wastewater is safely treated and discharged in compliance with regulatory standards. The efficiency and effectiveness of an STP depend on factors such as its design, operational practices, and the characteristics of the sewage being treated.

 

A Wastewater Treatment Plant (WWTP) is a facility designed to treat wastewater, which includes sewage and other types of contaminated water generated from various sources such as homes, industries, and businesses. The primary goal of a WWTP is to remove pollutants and contaminants from the wastewater before it is discharged back into the environment (usually into rivers, lakes, or oceans) or reused for other purposes such as irrigation.

The process of wastewater treatment typically involves several stages, which may include:

1. Preliminary Treatment: This stage involves screening to remove large objects like sticks, rags, and debris, and grit removal to eliminate sand and small stones.

2. Primary Treatment: Wastewater flows into large tanks where solids are allowed to settle and oils and grease are skimmed off the surface. This process removes a significant portion of suspended solids and organic matter.

4. Secondary Treatment: The wastewater undergoes biological treatment where microorganisms (bacteria and other microbes) break down organic pollutants. This stage can use aerobic processes (requiring oxygen) or anaerobic processes (without oxygen).

5. Tertiary Treatment: In some cases, further treatment is required to remove nutrients like nitrogen and phosphorus, as well as trace contaminants. This can involve chemical treatment, filtration, or advanced biological processes.

6. Disinfection: Before discharge or reuse, the treated wastewater is often disinfected to kill harmful pathogens. Common disinfection methods include chlorination, ultraviolet (UV) light treatment, or ozonation.

7. Wastewater treatment plants vary in size and complexity depending on the volume and nature of wastewater they handle, as well as local environmental regulations. Effective wastewater treatment is crucial for protecting public health, preventing water pollution, and conserving water resources.

A type of wastewater treatment which aims to remove contaminants from sewage to produce an effluent that is suitable to discharge to the surrounding environment

STP SBR (Sequential Batch Reactor) technology is a type of wastewater treatment process that operates in a batch mode. Here’s an overview of what STP SBR based technology typically involves:

1. Batch Operation: Unlike continuous-flow treatment systems, SBRs operate in batches. They go through a sequence of treatment phases: filling, reaction, settling, decanting, and idle. This sequence allows for flexible operation and effective treatment of varying influent loads and qualities.

2. Sequential Process: The treatment process occurs in a sequence of steps within a single reactor tank. Each step serves a specific purpose in the treatment process, such as aeration, settling, and decantation.

3. Flexible and Efficient: STP SBR technology is known for its operational flexibility and efficiency in treating wastewater. It can handle variations in influent flow and characteristics effectively due to its batch nature and the ability to adjust the treatment phases.

4. Automation: Modern STP SBR systems often incorporate automation and control systems to optimize the treatment process, monitor performance, and adjust operational parameters as needed.

5. Applications: This technology is widely used in both municipal and industrial wastewater treatment plants due to its compact footprint, efficient nutrient removal capabilities, and ability to handle fluctuating loads.