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Ammonia-contaminated water treatment system of fish farms

Ammonia-contaminated water treatment system of fish farms
The concentration of non-ionic ammonia (NH3) in the water of fish breeding ponds should always be less than 0.5 mg per liter; Because ammonia is a toxic substance for raising fish and other aquatic animals. Other toxic substances for fish and other organisms should also be removed from fish breeding ponds. These materials can include insecticides, pesticides and other chemicals; Therefore, water purification in the fish farming industry is very necessary to remove these toxic materials. The most appropriate method to reduce ammonium and other toxic substances in fish breeding ponds is biofilter. PGA company is capable of making such biofilters in different dimensions.

Biofilter system in oil and petrochemical industry

Wastewater of oil and petrochemical industries have a huge collection of different types of pollutants. Some of the most important pollutants in petrochemical waste are solid and colloid particles, bad-smelling gases that occur due to the decomposition of organic materials and dissolved gases in the waste, carbohydrates, Detergents, dyes, proteins, types of fats, chlorides, heavy metals, nitrogen, phosphorus, carbon dioxide, ammonia, and methane are indicated to cause increased COD and BOD and should be removed by filtering. Removal of various groups of polluting materials in the waste of petrochemical industries can ultimately increase their quality to a desirable level and can use as water for agricultural fields. With these solutions, not only environmental pollution is prevented, but water consumption is also saved to a great extent. In order to treat the waste of oil and petrochemical industries, different physical, chemical and biological steps are needed, including physical removal of particles, degreasing, coagulation and biofilter.

Biofiltration system for Metal Plating

Based on the type of plating used in this field, the wastewater will have various types of heavy metal such as chromium, nickel, tin, copper, aluminum, cadmium and cyanide. Pouyagen Azma company has succeeded to make biofiltration system for treatment of this type of wastewater and had been successfully installed and is using so far in more than 20 metal plating industries. Process of PGA bioftration system contains pH adjusting, isolation of particles with bag filter and removal of heavy metals by biofiltration system. All of this process is continuous and automatic using PLC or electrical panel. One of the installed plating biofilteration is shown in picture below.

Biofiltration system in livestock industry

Cattle wastewater obtains from washing the milking place of the cattle and the breasts of the cow before and after milking. The collected sewage has an average COD of 4000, milk residues and excrements and it can be considered as one of the polluting industries, so the treatment of cattle waste is one of the priorities of every cattle farm. PGA biofiltration system is capable of purifying this kind of waste to COD less than 100 and can be used in agriculture. PGA biofiltration system in livestock with the capacity of 50 m^3 per day can be installed in 20 foot container and transport to the cattle farm. In the Picture below, there is an installed PGA biofiltration system in cattle farm.

Desalination with reverse osmosis method

Water purification and desalination system with reverse osmosis method
The process of reverse osmosis or water sweetening is a method to separate impurities from water. In this method, the separation factor is mechanical pressure. Currently, the reverse osmosis process plays a very important role in water purification.

Filters (sand, carbon, micron and disk)

Usually, a sand filter is used to remove all kinds of physical and biological suspended particles in water up to 50 microns in diameter. This impurities can include any types of organic materials, planktons, bacteria and particles of rust, mud and dyes.

Food industry wastewater treatment system

Various food industries including production factories such as dairy products, canned food, compote, tomato paste, juice, soft drinks, dry beans and ready-to-eat vegetable, despite the wide variety of products, have similar quality in waste production. The amount of COD and BOD of this industries are in 100-10000 milligram per liter.

Grey water treatment and recovery system

Grey water treatment and recovery system
Grey water includes water obtained from washing the sink, laundry, bathroom etc. except for heavy human waste. Residential units, businesses, hotels and public places, industrial washing workshops such as car washes, carpet cleaners, factories for washing and packing food, dry fruits and vegetables are among the uses of this type of biofilter. The water obtained from the purification can be used for washing the yard and car, watering plants, supplying flash tanks and also for industrial applications.

Hydro cyclone

A simple and effective tool for removing abrasive grains and solids from water. Due to its high efficiency (95 percent) in removing particles, ease of installation and use, and reasonable price, this device has a special place in water purification and water supply systems. If the working conditions and pressure are favorable, it can remove particles up to 75 microns.

leachate treatment system

Garbage leachate is a fluid obtained from buried or recycled garbage which has various dangerous and toxic substances and in according to geographic region, has different range from 10000 to 120000 in BOD, COD and TDS and in case entering to environment has irreversible effects and must be treated. Here in PGA company, we have succeeded in setting up a waste water treatment system based on biofilter. One of this system successfully installed in garbage collection stations of Tehran. That has capacity up to 20 cubic meters per day and can install a 20 foot mobile-container, picture of this system is given bellow.