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There are many operations where waste water is produced which results in a need for the water to be stored. Contaminated water comes in many forms and can be relatively clean, through to being toxic and potentially damaging to the environment, community and workers. It is important that waste water does not leave a property or site until it can be effectively disposed of or recycled.
Effective and safe storage of waste water is critical to the ongoing operation of many businesses and facilities and is an essential part of the onsite water treatment system. Water tanks also provide storage until the contaminated water can be transported off site. Most operations require a level of treatment of waste water before it leaves the site.
To effectively store waste water there are three steps to consider, which are the selection of the correct type and size of tank, site selection and the right installation of the water tank.
The selection of the size and type of tanks requires and understanding of what contaminants are in the water and whether they will be corrosive to either the tank or fittings. To select the correct type of tank a chemical compatibility chart should be referred to. The specific gravity of the water needs to be understood as this will determine the weight or strength of the tank. For example water that has chemicals in it which are heavier than water will need a heavier duty tank than one that has lighter chemicals. The volume of water that needs to be stored determines the size or number of tanks and there is generally a requirement to have a buffer so if there is an operational or environmental issue there will be sufficient capacity to take all the waste water produced.
The selection of the site for a waste water tank is important both from an operational and environmental perspective. From an operational perspective the site selected aims to transfer waste water from the point of creation to the storage location and then onto the treatment site. Elements to consider in the selection of a site include being away from operational traffic which could potentially damage the tank and above or out of the way of any storm water runoff areas. The aim is to site the water tank in a secure location with a safe way to transfer the contaminated water from the operation area to the tank.
The correct installation of the tank will ensure the tank works effectively and safely. The product that is to be stored in the tank will determine the design of the installation. For example if the product that is stored is toxic then there will be a requirement for bunding and additional securing of fittings. The site needs to be flat and often with industrial tanks the base will need to be concrete. The other things to consider include protection of the tank from damage and selection of the correct fittings.
Waste water is a normal by product of production and operational processes and in years gone by it was often pumped straight into the storm water or sewage system. Todays focus on the environment and being a responsible corporate citizen means contaminated water has to be treated and disposed of safely and within the legislative rules. To do this there is generally a requirement to safely store waste water on site. It is important to select and install the right tank to ensure the waste water remains secure prior to treatment and disposal.
For more information of the storage of waste water go to www.bushmansindustrialtanks.com.au.