{"id":2126,"date":"2018-05-24T13:53:39","date_gmt":"2018-05-24T12:53:39","guid":{"rendered":"http:\/\/flovac.es\/?page_id=2126"},"modified":"2018-05-24T13:53:39","modified_gmt":"2018-05-24T12:53:39","slug":"the-right-type-of-sewer-system-for-your-project","status":"publish","type":"page","link":"https:\/\/flovac.es\/en\/the-right-type-of-sewer-system-for-your-project\/","title":{"rendered":"The Right Type of Sewer System for your Project"},"content":{"rendered":"
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The Right Type of Sewer System for your Project<\/h1>\n<\/p><\/div>\n<\/p><\/div>\n

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What is the right type of sewer system for your project?<\/h2>\n

Vacuum sewer systems are not the ideal system for all locations or all projects. It is important to rationally determine what the best sewer system for your project would be. In many cases it may be a combination of some or all, that may the best way forward.<\/p>\n

Municipal sewerage systems (either in new developments or as system replacements) will more than likely be a choice between:<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Septic tanks<\/p>\n<\/p><\/div>\n

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Gravity sewers<\/p>\n<\/p><\/div>\n

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Low pressure pumping systems<\/p>\n<\/p><\/div>\n

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Vacuum sewer systems<\/p>\n<\/p><\/div>\n

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An analysis of a project will usually include the capital cost of the system and\u00a0the whole of life costs which will include energy costs and operational costs. Quite often analysts are also doing carbon footprint comparisons as well. There are\u00a0hidden costs in installing a gravity sewage system<\/strong>.<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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Septic Tanks or Septic Tank Effluent Drainage (STED) or Septic Tank Effluent Pumping (STEP)<\/h2>\n

Although cheap to install most municipalities have banned the use of septic tanks and the use of drainage or effluent schemes is done only as a short term measure as replacement is usually required within a 10 year period.<\/p>\n

The main issue is the reliance on the homeowner. This can result in overflows to wetlands, water supplies or rivers creating health risks and environmental damage.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\t\t\t\t\t\t\t\t\t\t\t\t\tFosas s\u00e9pticas creando problemas medioambientales en la bah\u00eda de Kawakawa, Nueva Zelanda\t\t\t\t\t\t\t\t\t\t\t<\/p><\/div>\n<\/p><\/div>\n

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Grinder pump or low pressure sewer systems<\/h2>\n

Grinder Pumps can be an ideal solution for small communities of under 100 houses especially when located in hilly areas where large housing blocks are spaced apart. Pumps can quite often be used in combination with vacuum or gravity schemes when wanting to attach small outlying communities or houses to a municipal scheme.<\/p>\n

They are not ideal in coastal area\u2019s where sand can affect the grinders nor in area\u2019s with an uncertain power supply as service must completely stop.<\/p>\n

As pumps are generally located on the home owners property and operational and power costs often need to be met by the homeowner there is often a negative reaction by communities when other alternatives such as vacuum are available. Unlike vacuum systems, grinder pump systems require operators to enter the private property often spilling effluent on to the ground when making repairs.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\t\t\t\t\t\t\t\t\t\t\t\t\tEnfado comunitario por la decisi\u00f3n de adoptar bombas trituradoras\/sistemas de alcantarillas de baja presi\u00f3n\t\t\t\t\t\t\t\t\t\t\t<\/p><\/div>\n<\/p><\/div>\n

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Gravity Sewers<\/h2>\n

Usually communities have been left un-sewered because the area is too difficult or expensive to install a gravity sewer. Gravity sewers have been used for hundreds of years but moves to improve health and safety of operators, reduce power and water use and reduce environmental damage has led to a movement away from their use.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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As the name suggests large diameter pipes rely on a movement of sewage via gravity down a pipe until it is too deep then a pump will bring it back to the surface where it begins the process again. There are a number of problems with this. As old systems have broken pipes, sewage contaminates ground water and fishing areas causing health problems and stormwater enters the sewer system churning energy with both pumping and treatment.<\/p>\n

One of the most complex problems with gravity sewers is in its construction. Many systems require deep excavation, going down as deep as 20 meters (70 feet) or multiple pump stations which require land and power. In many towns the space is simply not available.<\/p>\n

Water, stormwater, power and communications cables also need room under the street. Construction time can be costly and time consuming, not good for developers nor local residents. Imagine 100 foot a day of excavation through coffee rock or acid sulphate soils.<\/p>\n

It is very common to read in the press of \u201cfat icebergs\u201d building up in the sewers or of rat infestations. Do operators really need to put up with this in the 21st century? Do they need to risk their lives in gas explosions from gas build-ups\u2019 in the sewer?<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\t\t\t\t\t\t\t\t\t\t\t\t\tT\u00edpica construcci\u00f3n de alcantarilla por gravedad profunda\t\t\t\t\t\t\t\t\t\t\t<\/p><\/div>\n<\/p><\/div>\n

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Vacuum Sewers<\/h2>\n

Enter the 21st century. Typically vacuum systems are found in area\u2019s where it has been too hard to install a gravity sewer. Today you can also see them being used to supplement overburdened gravity sewers in fast growing towns and cities, or in area\u2019s which succumb regularly to earthquakes, typhoons and hurricanes. They won\u2019t be found amidst a bunch of 40 story residential buildings in a dense development as laying a trunk gravity main to cater for that is far easier. Have a look at our page Types of Projects<\/a> for the variety of vacuum projects which have been done.<\/p>\n

Vacuum Systems are often found in flat areas which either have a high water table or difficult excavation due to hard rock.\u00a0 But there are many other reasons for why a vacuum system may be the system of choice for your project. The average size project has 2,000 people but can be installed for 1 person or 100,000 people.<\/p>\n

There are a variety of reasons why vacuum systems have been chosen on these projects, capital cost is a major one, as is ongoing power costs but in recent times we have commonly seen the reduction of\u00a0risk of ex filtration as being a major factor. Environmental Agency and county fines for polluting streams, beaches and fishing spots have soared, communities with Flovac vacuum sewers have significantly lower risks.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n

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\t\t\t\t\t\t\t\t\t\t\t\t\tT\u00edpico proyecto de alcantarillado por vac\u00edo, protegiendo las corrientes de agua de los derrames de efluentes.\t\t\t\t\t\t\t\t\t\t\t<\/p><\/div>\n<\/p><\/div>\n

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How Do Vacuu<\/a>m Systems compare with Gravity and Low Pressure Systems<\/a>?<\/h3>\n<\/p><\/div>\n<\/p><\/div>\n

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The Right Type of Sewer System for your Project What is the right type of sewer system for your project? Vacuum sewer systems are not the ideal system for all locations or all projects. It is important to rationally determine what the best sewer system for your project would be. 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