Waste Water Treatment

- Sewage Treatment Plant
Grey Water Treatment
- Decentralised STP
- Containerized STP
- Skid Mounted STP
- STP for labor camp
Compact STP

- Sustainable STP
- STP for weekend home
- Tertiary Treatment with Ozonation

 Water Treatment Solutions

- Drinking Water Treatment
- Ozone in Food & Beverage
- Swimming Pool/Ponds
- Process Water Treatment
- Type II RO Water
- Ozone Laundry System
- Cooling Tower Treatment
- Municipal Drinking Water
- Sea Water Desalination
- River/Lake/Dam Ground

 Air Treatment Solutions

- Operation Room Fumigation
- Odor removal / Control
- Indoor Air Treatment
- Indoor Air Quality (IAQ)
- HVAC / AHU Ozonation
- Air Disinfection
- VOC Reduction
- Sick Building Syndrome
- Production Industry
- Packing Industry


Steel Industries

Steel plants use a tremendous amount of water for waste transfer, cooling, and dust control. The plants have sintering mills, coke plants, electricity and gas for furnaces, chemical by-products and chemical processes, water cooled rolls, pumps, slab furnaces, mandrels, extrusion equipment, waste water treatment, transfer lines for sludge and slurries.

The production of iron from its ores involves powerful reduction reactions in blast furnaces. Cooling waters are inevitably contaminated with products especially ammonia and cyanide. Production of coke from coal in coking plants also requires water cooling and the use of water in by-products separation. Contamination of waste streams includes gasification products such as benzene, naphthalene, anthracene, cyanide, ammonia, phenols, cresols together with a range of more complex organic compounds known collectively as polycyclic aromatic hydrocarbons (PAH).

• Rolling plants use a tremendous amount of water to cool the rollers and flush the impurities away from the finished stock. This coolant is a mixture of oils and water which gets contaminated with bacteria and must be disposed of as a hazardous waste.. Eventually the bacteria die off.
• Pumping energy costs rise as the pumps and lines become clogged.
• Scale and other deposits on boilers, heat exchangers and cooling towers rob the process of energy efficiency and cost maintenance time and chemical treatment costs.

Treatment of Industrial waste water

The different types of contamination of wastewater require a variety of strategies to remove the contamination
1. Solids removal
2. Oil & grease removal
3. Removal of biodegradable organics
4. Activated sludge process
5. Trickling filter process
6. Treatment of other organics
7. Treatment of acid & alkalis
8. Treatment of toxic materials

Technologies used in Steel plants are:

1. Cooling Tower
Cooling towers are heat removal devices used to transfer process waste heat to the atmosphere. Cooling towers may either use the evaporation of water to remove process heat and cool the working fluid. Common applications include cooling the circulating water used in oil refineries, chemical plants, power stations and building cooling. .They are often associated with nuclear power plants in popular culture.

2. D.M. Plant
DM Plant is an Ion exchange technology used to remove salts (cations and anions) from water. Soluble chemical compounds, when dissolved in water, become ionized; that is their molecules dissociate into positively and negatively charged components called ions. Consider common table salt, sodium chloride. In its solid form, this compound consists of one sodium atom (Na) and one chlorine atom (Cl) tightly coupled together (NaCl). When dissolved in water, however, the compound splits into two ions Na+ and Cl- A Typical two-bed DM Plant consists of two FRP vessels connected in series along with its internal fittings.

| |

Green Building
Indoor Air Quality Solutions
Sustainable Building
Sick Building Syndrome (SBS)

Contact Us
Project Office Address :

28, Satyam Industrial Estate, Subhash Road, Jogeshwari (East) Mumbai 400 060 INDIA

The first unit consists of high capacity strongly acidic cation exchange resin, which converts positive ions of salt and replaces them with hydrogen ions to form respective acids, which are absorbed in next vessel by strongly basic anion exchange resin. The water obtained by this process shows conductivity less than 30 µS/cm and Total Dissolved Solids less than 10 ppm.Further high purity water can be achieved by Mixed Bed Deionizers, which are designed to produce high purity treated water. They can be used as polishing units after two beds DM Plant to obtain high purity water.

3. STP
Following are the two methods to treat waste water in sewage treatment plant.

A Conventional Method
Conventional sewage treatment may involve three stages, called primary, secondary and tertiary treatment.

Primary treatment consists of temporarily holding the sewage in a quiescent basin where heavy solids can settle to the bottom while oil, grease and lighter solids float to the surface. The settled and floating materials are removed and the remaining liquid may be discharged or subjected to secondary treatment.
• Secondary treatment removes dissolved and suspended biological matter. Secondary treatment is typically performed by indigenous, water-borne micro-organisms in a managed habitat. Secondary treatment may require a separation process to remove the micro-organisms from the treated water prior to discharge or tertiary treatment.
• Tertiary treatment is sometimes defined as anything more than primary and secondary treatment. Treated water is sometimes disinfected chemically or physically (for example, by lagoons and microfiltration) prior to discharge into a stream, river, bay, lagoon or wetland, or it can be used for the irrigation of a golf course, green way or park. If it is sufficiently clean, it can also be used for groundwater recharge or agricultural purposes.

B Ozonation Method
The incoming raw sewage pass through a bar screen chamber to remove coarse suspended solids, fibers, plastics etc. and is collected into a septic tank / holding tank. The tank will have 24 – 48 hours holding capacity, with suitable compartments to separate the heavy sludge solids present in the incoming sewage.

A sewage transfer pump will transfer the raw effluent into a manual self cleaning filter, and then pressure sand filter & then onward to an ozonator. Ozone will be injected into the raw sewage and mixed in to a contact chamber / holding tank. The ozone will oxidize the organics present in the sewage, thereby reducing the BOD / COD levels of the sewage to acceptable limits.
The ozonated effluent will be filtered through a pressure sand filter to remove trace suspended solids / turbidity, etc. The outlet water can be reused suitably for toilet flushing, gardening, etc.

4. River water treatment

Water purification is a process of removing undesirable chemicals, materials, and biological contaminants from raw water. The goal is to produce water fit for a specific purpose. Water purification may also be designed for a variety of other purposes, including meeting the requirements of medical, pharmacology, chemical and industrial applications. In general the methods used include
Physical processes such as.

• Pre-Ozonation
• flocculation
• filtration / Aeration
• chlorination
• pH Correction

Designed & Hosted by : MID  Promoted by : GID