Refinery equipment

Various aeration blenders

Various aeration diffusers used for sewage treatment in sewage treatment plants are divided into two types of porous keyfilters and non-porous diffusers. The most common type of diffusers is doppler, dome, disk and tube.

Types of aeration blowers

Aero blower types
Aeration blower or air blower for blowing air into the pipes then into the diffusers of the wastewater treatment plants. The air blower is also used for air blowing in pools and fish huts and jacuzzis. In sewage treatment plants, in the activated sludge activated sludge unit, EAAS, MBBR, or IFAS or other aerobic processes are used.

Types of ion exchange resins

Types of ion exchange resins include strong acid cationic resins, weak acid cationic, strong anion, weak anionic play, and Chelatin resins. Cationic and anionic resins are widely used in water treatment.

Septic tanks

Septic tanks are the simplest and most commonly used unit for sewage treatment, especially human health sewage. Septic tanks have different applications. Septic can be used for storing the sewage tank to pump it into the main purification package. The septic tank can be pre-treated by flotation processes, such as sedimentation. These septic tanks are widely used in residential and residential complexes, residential and office complexes, construction and construction workshops, manufacturing and industrial factories, hotels, restaurants, and recreational and sports complexes.

Suggested treatment methods

The proposed sewage treatment methods, depending on the industry, require that the sewage be treated with biological or chemical processes during different purification processes, such as pre-treatment and refinement. During the purification process, those chemical and hazardous compounds for biological processes are reduced to the desired extent. Due to the high concentrations of organic materials, the wastewater industry is more similar to human wastewater and can be treated with biological methods. As can be seen below, the proposed purification methods are varied and different with respect to the type of industry and quality of sewage.

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  1. Wastewater Textile, Clothing and Leather

    • Important sewage features:

      High alkalinity, BOD and high temperature, abundant suspended matter, total solids, total hardness, salt, sulfide, chromium, pH, sedimentary lime

    • Suggested treatment methods:

      Neutralization, chemical sequestration, biological treatment or filtering, balancing, sedimentation

  2. Wastewater, drinking & tobacco industry

    • Important sewage features:

      High levels of suspended matter, chloride, soluble organic matter, protein, fat, lactose, nitrogen, blood, high BOD, pH, color and odor, oil, detergent, formaldehyde, microbial agents

    • Suggested treatment methods:

      Dusting, balancing, neutralizing, settling or floating, aeration, chemical purification, coagulation, active sludge, biological oxidation pool, drainage filter, stabilization pond, composting, concentrating by centrifugation, evaporation, drying

  3. Waste paper, cardboard and printing industries and wood products

    • Important sewage features:

      COD, high BOD, solids, phenol compounds, toxicity, organic matter, pH

    • Suggested treatment methods:

      Evaporation, burning, chemical coagulation, oxidation pool and other methods of aerobic biodegradation, sedimentation pool, pond stabilization and biological treatment, aeration, recycling

  4. Chemical waste water

    • Important sewage features:

      Soluble salts, chloride and high BOD, pH, mineral acids, chromium, organic fatty acids, TDS of metals, resins, solvents, odor and odor, alcohol, soap, organic matter, benzene rings, pesticides, phosphorus, silicon, fluoride, sludge, Formaldehyde, nitric acid and sulfuric acid, ferroalloys, iron sulfate, radioactive elements, aluminum, nitrate, ammonium, mercury, polychlorinated biphenyls PCBs, sulfur dioxide, suspended solids, alkalinity, non-leachable and leachate

    • Suggested treatment methods:

      Control in place of production and prevention of leakage or leakage, storage, dilution, balancing, neutralization, sedimentation, aeration, flotation, chemical coagulation, chemical sequestration, biological oxidation, stabilization pond and other methods of biological treatment, mechanical clarification, filtering Chewing, sulfonation, chlorination, anaerobic digestion, burning alkali sludge, or acid neutralization, activated carbon adsorption, recycling and reuse.

  5. Non-metallic mineral waste water

    • Important sewage features:

      Mineral salts, suspended asbestos particles

    • Suggested treatment methods:

      Precipitation, sedimentation, neutralization, particle separation, calcium chloride sequestration, disposal on the ground

  6. Waste water production of basic metals

    • Important sewage features:

      Low or variable pH, cyanogen, acids, phenol, ore, alkalinity, oil, metals, pesticides, sand and coal, metal particles, surfactant

    • Suggested treatment methods:

      Dusting, oil separation, neutralization, chemical coagulation, chlorination, reduction and deposition, chromium and other metals, storage in ponds, final absorption with carbon, recycling and reuse

  7. Medicinal Waste Water

    • Important sewage features:

      Organic fatty acids, alcohol, soap, organic matter, benzene rings, toxins, fluoride, formaldehyde, nitric acid and sulfuric acid, profits, organic matter, chemical composition, hormones, high BOD and COD, color, nutrient elements, pH, salts and acids. Nitrate, Ammonium, Materials

    • Suggested treatment methods:

      Separation and control in situ, storage, dilution, stabilization, neutralization, sedimentation, aeration, flotation, coagulation and chemical sequestration, biological oxidation, filtering and other biological treatment methods, anaerobic digestion, burning of alkaline or neutral sludge Acid, Activated Activated Activated Acetate

  8. Waste water and electricity industries

    • Important sewage features:

      PH variables, solvents, acids, organic and mineral chemical compounds, fat and oil, alkalinity, various metals, metal particles, surfactant

    • Suggested treatment methods:

      Dusting, control and separation at the site of production, neutralization, chemical coagulation, metal recovery and deposition, storage in ponds, final absorption with carbon

  9. Agricultural Waste Water

    • Important sewage features:

      Soluble organic matter, pesticide residues, protein, nutrients, fat, lactose, nitrogen, high BOD, high suspended matter, calcium, color and odor, oil, detergent, formaldehyde, microbial agents

    • Suggested treatment methods:

      In situ control and separation, balancing, neutralization, settling or floating, aeration, chemical purification, coagulation, biofuel treatment, composting, reuse in agriculture