Welcome to the world of wastewater treatment; Where innovation and technology stand in front of the water shortage problem and defeat it. As the world population increases, the need for water resources also increases. To deal with this problem, a variety of water purification devices have emerged. One of these devices is “Grey Wastewater Treatment Package”.
This innovative package is designed to purify gray water that is generated from household activities such as washing dishes, laundry and bathing.
In this article, after defining the concept of gray wastewater, we talk about the gray wastewater treatment package, its features, advantages, and its working method.
What is the gray waste treatment package?
“Grey water” refers to wastewater generated from household activities such as bathing, showering, hand washing, and laundry. Unlike “black water” which is toilet sewage, gray water does not contain feces and usually includes water from bathroom sinks, showers, bathtubs, and washing machines.
Characteristics and application of gray wastewater
The characteristics of gray water are as follows:
Composition: Gray water contains soap, shampoo, detergent residue and a small amount of organic matter.
No fecal contamination: unlike black water, gray water does not contain human waste or toilet water.
Biodegradable elements: Gray water often contains biodegradable materials that can be broken down by microorganisms.
After proper purification and disinfection, gray water can be used for various purposes. One of the most common uses of treated gray water is watering plants and crops.
In addition, treated gray water can be used to flush toilets, which can significantly reduce water consumption in homes and commercial buildings.
Some industries such as car washes and dry cleaners also use treated gray water to reduce water consumption.
The importance of gray water treatment
The importance of gray water treatment is as follows:
Health and Safety: Untreated greywater can pose health risks due to the presence of bacteria and other contaminants.
Environmental impact: The discharge of untreated gray water into the environment can have negative effects on the ecosystem.
Reusability: Treated gray water can be reused for non-potable purposes such as irrigation, flushing toilets, or even for some industrial processes.
What is the gray waste treatment package?
The gray wastewater treatment package is a device or system that is made to treat gray wastewater. The gray wastewater treatment package is produced and provided by various manufacturers and is used for gray wastewater treatment.
Components of gray wastewater treatment package
The components of a gray wastewater treatment package include the following. However, you should consider that the following information is general and the components may change based on system type, technology and requirements.
Pre-treatment stage
Purpose: It collects gray water from different sources in a building or facility.
Components: pipes, drains and collection points
Pre-treatment stage
Purpose: Removes larger particles, debris and solids to prevent clogging and protect machine components.
Components: plates, filters or settling tanks
Components: plates, filters or settling tanks
Purpose: It uses microorganisms to decompose organic matter in gray water.
Components: constructed wetlands, biofiltration systems, or aerobic treatment units.
Chemical treatment
Purpose: Disinfects water by killing or inactivating harmful bacteria and pathogens.
Components: Chlorination systems, UV disinfection units, or other chemical treatment methods.
Filtration step
Purpose: Filters fine particles, suspended solids and impurities.
Components: fine mesh filters, sand filters or membrane filters
Ventilation system (optional)
Goal: increasing the oxygen content in water, increasing biological processes and improving the efficiency of purification
Components: aerator or diffuser
Storage tank
Purpose: Holds treated gray water for later use.
Components: tank with cover and suitable materials.
Distribution system
Purpose: directs treated gray water to its final use, such as irrigation or flushing toilets.
Parts: pipes, pumps and valves.
Monitoring and control system
Purpose: Monitors refining processes for optimal efficiency.
Components: sensors, controllers and monitoring devices.
Emergency overflow/drain system
Purpose: To safeguard against system overload by providing a controlled discharge point in case of excessive water level.
Components: emergency overflow pipes and discharge outlets.
The treatment process in the gray wastewater treatment package (steps of gray water treatment)
The gray water treatment process consists of several steps. Although the types of gray wastewater treatment packages may vary, the following steps are involved in the treatment process.
Collection: Gray water is collected from sources such as showers, sinks and washing machines.
Pre-treatment: Collected water is passed through a series of physical filters such as mesh plates to remove large particles and debris. If these wastes enter the next parts of the device, they will cause their failure.
Biological treatment: The pre-treated water is then passed through a biological filter that contains microorganisms that break down organic matter such as soap and food particles. This process is known as “biofiltration”. Biofiltration breaks down and removes organic matter.
Chemical treatment: After biological treatment, water is treated with chemicals such as coagulants and flocculants to remove residual suspended particles. Coagulants are added to water to neutralize the charge of suspended particles and cause them to aggregate and form larger particles called flocs. On the other hand, flocculants help to make the flocs heavier so that they settle more easily. The most common coagulant used in gray water treatment is aluminum sulfate, also known as alum.
Disinfection: The treated water is then disinfected using methods such as UV light or chlorine to kill any remaining pathogens.
Storage: The disinfected water is then stored in a separate tank and can be reused for various purposes such as irrigation or toilet flushing.
Important factors after gray water treatment
After gray water treatment, several factors must be considered before reuse.
One of them is the pH level of water. The pH level can affect the effectiveness of disinfection methods and the overall quality of water. The pH level must be maintained within a certain range, usually between 6.5 and 8.5, to ensure that the water is safe for reuse.
Also, it is important to consider the intended use of the treated water. For example, if the water is to be used for irrigation, it must be free of extra salts and nutrients that can harm the plants. But if the water is going to be used for flushing the toilet or washing clothes, it may not need to be pure.
Finally, in many cases it is necessary to monitor the water after it leaves the gray wastewater treatment package to make sure it is safe for the intended use.
Advantages of using the gray water treatment package
The advantages of using the gray water treatment package are as follows:
Environmentally friendly: The gray waste water treatment package reduces the amount of wasted water and helps preserve water resources.
Cost reduction: Using a gray wastewater treatment package for non-drinking purposes can help reduce water bills and save money.
Improve water quality: The gray wastewater treatment package removes impurities and pollutants from the wastewater and makes it safe for reuse.
Reducing pressure on wastewater treatment facilities: By using the local gray wastewater treatment package, the load on wastewater treatment facilities is reduced.
Energy savings: By reducing the amount of water that needs to be transported and treated, gray water treatment can help conserve energy resources.
Gray water treatment package design
Companies that design gray water treatment packages consider the following:
Identify gray water sources (such as showers, sinks, washing machines).
The characteristics of produced gray water are considered.
Determine appropriate treatment technologies based on water reuse.
The capacity of the treatment system is determined based on the volume of gray water produced.
In some cases, a distribution system is designed to deliver treated gray water to final consumers (such as water supply, toilet flushing, etc.).
If the employer wishes, a monitoring and control system with sensors and controllers will be installed to optimize the treatment processes.
Appropriate filtration systems are selected based on the filtration needs. These filters may include sand filters, membrane filters or other filters.
The price of gray water purifier
The price of the gray water purifier is determined based on the following:
technology
Advanced treatment technologies such as reverse osmosis or UV disinfection may be more expensive than simpler systems such as filtration.
Capacity
Large capacity systems designed to handle higher volumes of greywater generally have higher initial costs.
Facilities
Additional features such as remote monitoring, automated controls, and modular design may add to the cost.
Installation complexity
Installation complexity, including site-specific considerations, can affect overall costs.
Brand and manufacturer
Reputable brands and manufacturers may design and offer their systems at a higher price due to their reputation and reliability.
Maintenance requirements
Ongoing maintenance costs affect the overall price.
Construction of gray water treatment package in Mehrab Zist, Pars
Mehrab Zist Pars Company is a manufacturer of various gray wastewater treatment packages with different facilities, capacities and prices. If you plan to design a gray wastewater treatment package suitable for your business or residential building, Mehrab Zeit Pars technicians can design the best type of gray wastewater treatment package for you at a reasonable price by estimating the system requirements based on the site.
| row |
Feature |
Description |
| 1 |
Package capacity |
5000 liters per day |
| 2 |
System type |
MBR |
| 3 |
Filtration level |
More than 0.01 micron |
| 4 |
Energy consumption |
10 kW |
| 5 |
Installation cost |
25 million tomans |
Buying a gray water treatment package in Mehrab Zist, Pars
Mehrab Zist Pars has ready-made packages with specific and predetermined features. If you need a regular gray water treatment package, you can buy these packages.
conclusion
The gray wastewater treatment package is an efficient and economical solution for the treatment of water used in residential and industrial environments. Using modern technologies such as MBR systems, these packages help to reduce water consumption and preserve water resources. In addition, easy installation and commissioning, low cost maintenance and optimal energy consumption are prominent advantages of these systems. Choosing a suitable package, taking into account the required capacity and technical conditions, can play an important role in improving water consumption management and reducing environmental effects.
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