Wednesday, 20 June 2018

Sewage OR Wastewater Treatment

Wastewater treatment is one of the challenges.Wastewater (liquid waste) from flushing the toilet, bathing, washing sinks and general cleaning goes down the drain and into a pipe, which joins a larger sewer pipe under the road. The larger pipe also joins a major pipe that leads to the treatment center.

Screening is the first stage of the wastewater treatment process. Screening removes large objects like, diapers, nappies, sanitary items, cotton buds, face wipes and even broken bottles, bottle tops, plastics and rags that may block or damage equipment. Special equipment is also used to remove grit that gets washed into the sewer.

This involves the separation of organic solid matter from the wastewater. This is done by putting the wastewater into large settlement tanks for the solids to sink to the bottom of the tank. The settled solids are called ‘sludge’. At the bottom of these circular tanks, large scrappers continuously scrape the floor of the tank and push the sludge towards the center where it is pumped away for further treatment. The rest of the water is then moved to the Secondary treatment.

The water, at this stage, is put into large rectangular tanks. These are called aeration lanes. Air is pumped into the water to encourage bacteria to break down the tiny bits of sludge that escaped the sludge scrapping process.

Next, the ‘almost’ treated wastewater is passed through a settlement tank. Here, more sludge is formed at the bottom of the tank from the settling of the bacterial action. Again, the sludge is scraped and collected for treatment. The water at this stage is almost free from harmful substances and chemicals. The water is allowed to flow over a wall where it is filtered through a bed of sand to remove any additional particles.

Thursday, 8 March 2018

Austro Water Tech's Effluent Treatment Plant

AUSTRO CHEMICALS & BIO TECHNOLOGIES is a leading Industrial Waste Water Management company with engineering capabilities to undertake large Waste Water Treatment Projects. We serve in five countries - India, Japan, Indonesia, Ethiopia and Bangladesh.

Austro brings more than 20 years of expertise in Waste Water Treatment industry and deploys continuous efforts to bring the latest cost-effective technology into their engineering design. Our dedicated team of Civil, Electrical, Instrumentation, Mechanical, Chemical Engineers and Microbiological Professionals ensure integrated design and operations to meet all required statutory regulations.

Austro Chemicals & Bio-Technologies offer:

  • Designing, Engineering and Project Consultancy Services 
  • Manufacturing of Water and Waste Water Treatment Plants 
  • Erection & Commissioning and Operation & Maintenance of Waste Water Treatment Plants 
  • Revamping and Servicing of existing Waster Water Treatment Plants 
  • Supply of Spares, Chemicals, Resins, Bio-culture, etc 
  • Annual Maintenance Contracts 

We are experts in Textile ZLD Zero Liquid Discharge projects and commissioned more than 300 ZLD Plants and enable clients to process more than 500 MLD of Waste Water annually.

We understand that all customers are different. Our strength comes from our own manufacturing and fabrication facility to design custom solutions and plants to suit client needs.

  • To conserve water by implementing the concept of recycling 
  • To deploy the latest Waste Water Management Technology in its true shape across multiple industries 
  • To provide right, cost effective, timely delivery of Waste Water Treatment Plant and machineries 
  • To identify the problems with the existing Waste Water Treatment Plants and revamp/service them to give the designed productivity optimizing for the energy consumed 
  • To take up the burden of Operations & Maintenance of Water and Effluent Treatment Plants thereby enabling clients to to focus on their core business 

Our Services:

Zero Liquid Discharge Plants
Effluent Treatment Plant
Sewage Treatment Plants
Nano Filtration Plants
Reverse Osmosis Plants
Ultrafiltration Plants
Demineralization Plants
Aeration Systems
Iron Removal Systems
Ultra Violet Systems
Electro-Oxidation and Electro-Deionization

Effluent Treatment Plant process

Effluent Treatment Plant or ETP is one type of drainage treatment technique which is particularly developed to cleanse industrial waste water for its reuse as well as it's aim is to release risk-free water to environment from the damaging effect triggered by the effluent.

Industrial effluents have different materials, relying on the market. Some effluents include oils and oil, and also some contain harmful products (e.g., cyanide). Effluents from food and drink manufacturing facilities include degradable organic toxins. Since hazardous waste water includes a variety of contaminations and also consequently details treatment modern technology called ETP is needed.

The ETP Plant operates at different levels and entails various physical, chemical, biological and membrane processes to deal with drainage from various commercial fields like chemicals, medications, pharmaceutical, refineries, dairy, ready mix plants & textile etc.

Advantages of ETP

1. To tidy market effluent as well as reuse it for additional use
2. To minimize the usage of fresh water in industries
3. To preserve natural surroundings against air pollution
4. To meet the criteria for emission of toxins established by the Government & stay clear of hefty    penalty
5. To minimize expense on water acquisition

2. Industrial Effluent Treatment Process

The treatment of different effluents differs with the kind of effluent. Wastewater enters the effluent or sewage treatment plant as well as experiences a number of procedures before effluent enters into the setting. Industrial effluent therapy plant procedure consist of the adhering to phases:

a. Preliminary Treatment:  Its goal is physical splitting up of large sized impurities. For example cloth, paper, plastics, wood logs etc. This level/process include:

Testing: This is the first unit operation that takes place in drainage treatment plants. A display is a tool with consistent openings as well as its function is to eliminate huge floating solids.
Sedimentation: It is a physical water treatment procedure using gravity to remove put on hold solids from water.

Grit Chamber: The wastewater that relocates right into the grit chamber eliminates the dense not natural solids such as gravel, steel pieces as well as sand which have actually made their way into the sewage systems. Removal of grit could stop damaging of pumps & functional difficulties.
Clarifiers: These are storage tanks developed with mechanical methods for continuous elimination of solids being transferred by sedimentation before organic therapy.

b. Primary Treatment: Its aim is removal of drifting and settleable products such as suspended solids and organic matter. In this therapy both physical and also chemical approaches are utilized. It consists of:

Flocculation: Flocculation is a physical process as well as does not involve the neutralization of cost. It involves the enhancement of destabilized bits together right into huge aggregates to ensure that they can be conveniently separated from the water.
Coagulation: is a process where coagulants are added for the function of quick settlement of min strong bits in a fluid into larger mass. It allows fragment elimination by sedimentation as well as for filtration.

Neutralization: The main objective of this process assists in preserving the pH range of 6-9 to meet the needs of different handling units in ETP system.

Main Clarifiers: These are utilized to slow down the velocity of the water to a point where natural solids will certainly settle to the bottom of the container and it have an equipment that is made use of to remove floating solids as well as greases from the surface.

c. Secondary or Biological Treatment: The purpose of this therapy is the further treatment of the effluent from key treatment to remove the put on hold solids and residual organics. In this action organic and also chemical procedures are entailed.

Triggered Sludge Process: This is made use of for treating hazardous waste water making use of air and a biological floc composed of germs.

Aerated Lagoons: Is a therapy pond given with fabricated aeration to promote he organic oxidation of drainage.

Trickling Filters: Flowing filters, additionally referred to as sprinkling filters, are frequently utilized for the organic treatment of domestic sewage and also industrial waste water.
Revolving Biological Contactor: It involves permitting the wastewater ahead in contact with a biological medium in order to remove toxins in the wastewater before discharge of the treated wastewater to the atmosphere.

d. Tertiary/advanced/disinfection treatment: The objective of tertiary therapy is to give a last treatment phase to raise the effluent top quality to the desired degree before it is recycled, recycled or released to the environment.

Chemical Coagulation and sedimentation: It is made use of to raise the removal of solids from effluent after primary and also secondary treatment.

Purification: The cleared up wastewater wases initially gone through the nearby filtration plant which includes huge filter obstructs to ensure premium quality water.

Reverse Osmosis: In this process, pressure is utilized to compel effluent through a membrane that maintains pollutants on one side and permits the clean water to pass to the other side.

UV Disinfection: It is considered as an excellent anti-bacterial for industrial waste water. It leaves no recurring anti-bacterial in the water by making certain the water high quality. It does not produce any type of disinfection byproducts.

3. Effluent Treatment Plant Design:

The style of ETP depends on high quality and amount of waste water released from the different industries and land availability. If the schedule of land in your industry is less, then Typical Effluent Treatment Plant (CETP) is chosen over Effluent Treatment Plant (ETP).