Dissolved air flotation (DAF) is a method of treating waste water which involves separating oils, grease and solids. When pollution is caused mostly by suspended or dissolved matter, we recommend the installation of a Dissolved Air Flotation separation system. DAF systems will thicken the sludge of wastewater and also allow for fast and efficient removal of the waste. How Does It Work? Chemicals such as aluminium chloride and iron chloride are often used to destabilise colloidal particles so that floc formation occurs. Flocculation with other chemicals, for example,polyelectrolate, enables larger masses to form that can easily be removed. The process of dissolved air flotation involves production of minute bubbles which attach to the solids of the wastewater and bring these solids to the surface of the water. These solids, or sludge, can then be removed by a mechanical device designed to scrape the top of the water. Next, the water exits the float tank as clarified effluent. DAF systems can be either circular or rectangular...
Monthly Archives: June 2017
Maintaining your industrial wastewater treatment equipment is important for optimum production in your business. Properly maintained equipment will function accurately and efficiently, there will be minimal staff disruption and downtime, and your business will run more smoothly as a result. Ensure All Equipment is Well Calibrated Valve and instrument calibration is vital to ensure that your equipment is accurate and reliable. This is essential for monitoring, supervising and controlling your industrial processes correctly. Our valve and calibration servicing department will ensure that your equipment is optimally calibrated so that your industrial wastewater treatment equipment will work at maximum capacity. RegularlyService Equipment Regularly servicing your equipment will ensure that there is no unplanned downtime due to equipment failures. It is advisable to organise regular servicedatesfor all of your wastewater plant equipment. This will increase the life time of your equipment as well as help to avoid disruptions in your work flow and employees’ schedules. Always have your equipment regularly serviced at an approved industrial wastewater...
Wastewater at oil refinery companies must be effectively treated before water can be released back into the environment or reused. Regulations in each council, state, and country are extremely strict. Oil refinery wastewater can be complex to treat as the pollutants can be toxic and also volatile. Key pollutants Crude oil is made up of a number of components. These include:
- Lube oil
- Fuel oil
- Paraffin wax
- Use of a Dissolved Air Flotation Device as an oil water separator
- Use of a CPI separator Device as an oil water separator
- Neutralisation to adjust the pH value
- A Coagulation process which solidifies liquids for easy removal from the wastewater.
- Flocculation – this process enables particles to contact and adhere together to form larger clusters and allow for easy removal.
- Sedimentation filtration to remove particles
- Clarification and biodegradation which involves cleansing the wastewater and removing solids
Producing dairy products such as milk, cheese, butter, and yogurt produces wastewater that contains high levels of Biochemical Oxygen Demand (BOD). This must be reduced before discharging the water to effluent treatment plants or recycling. Key Factors Present in Dairy Waste Water waste from these products contains sugars, fats, proteins, and sometimes the residue of additives. It can also contain pathogens from contaminated material or the production process. Hazardous or contaminated waste is occasionally contained from the gearboxes of machinery, paints, batteries, laboratory waste and lubricants and solids. Advice and Recommendations on Dairy Wastewater Treatment Where possible the site should be located away from sensitive environments. Improving the management of waste will lower the cost of purchasing materials, and also reduce the impact on the environment. Dairy wastewater treatment involves treating the waste water for use in irrigation. It is advisable to implement a plan for water collection and recycling for both rain and grey water. Check if dairy wastewater treatment sludge can be composted at...
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