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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.

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.

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.

Slaughterhouse wastewater treatment system

Sewage of slaughterhouses have very high dose of pollutants and main organic compounds of mostly consist of blood, entrails, fecal and urinal contents, lipids, undigested foods, suspended materials, soluble proteins and particles. Slaughterhouse waste contains significant amounts of primary nutrients including phosphorus, nitrogen, potassium, COD, BOD, microbial pollutants and heavy metals, which are dangerous pollutants in water systems. In traditional methods Concrete ponds is used with or without aeration that this method cannot properly treat and purify such wastes. PGA biofiltration , using a combination system physical, chemical and biological methods based on biofilter is capable of purifying of sewage of slaughterhouse up to the standards of the Environmental Protection Organization and can be used again.

Textile wastewater treatment system

Textile and dyeing industries are one the largest consumers in the world, so they produce huge amount of wastewater and this wastewater have wide range of pollutants such as pigments and auxillary materials like dispersants, homogenizers, carriers, salts, acids, alkalis, and sometimes heavy metals. Similar to most industrial waste treatment packages, there are two main steps in textile and dyeing waste treatment. chemical and physical treatment and then biological treatment (biofilter). In the physical and chemical phase of purification the first step is adjusting the pH in neutral range, and then due to the high turbidity the chemical coagulation method is used to remove the pigments and suspended particles. In the last step an aerobic biofilter stage is used to remove the remaining materials. The image of a textile wastewater treatment system with a capacity of 100 cubic meters per day is shown below.

Treatment of Municipal sewage

Treatment of Municipal sewage

According to the urgent need for urban and domestic waste treatment, many methods have been investigated and done, among the most important of these methods are activated sludge, extensive aeration, MBBR, MBR, and SBR.

Wastewater treatment system for leather industries

Biofilter system in leather industry
Leather industries have high water consumption so they release enormous wastewater in environment, and usually have high amount of BOD, COD, TDS, sulfide, ammonium, nitrate and heavy metals such as chrome, industrial salts, organic compounds and skin waste. In case that this waste enters into the environment without treatment, it causes severe damage to the environment. PGA biofiltration, using a combination system physical, chemical and biological methods based on biofilter is capable of purifying of sewage of leather industry up to the standards of the Environmental Protection Organization and can be used again.

Wastewater treatment system of alcohol factory

Wastewater of alcohol factories and other factories that use molasses as primary substance, because of high organic load, high amount of BOD (about 50000) and COD (about 100000), colored sewage and existence of toxic compounds like phenol, are not able to dispose directly and cause a major environmental concern. Chemical-physical methods such as surface absorption, membrane processes, ion exchange and chemical oxidation are not economical for treatment of these types of wastewater. PGA biofiltration, using a combination system physical, chemical and biological methods based on biofilter is capable of purifying of sewage of leather industry up to the standards of the Environmental Protection Organization and can be used again.