{"id":2407,"date":"2016-07-06T21:59:03","date_gmt":"2016-07-07T04:59:03","guid":{"rendered":"http:\/\/www.waterandwastewatercourses.com\/?p=2407"},"modified":"2020-02-12T18:11:42","modified_gmt":"2020-02-13T02:11:42","slug":"calculate-sludge-volume-index-svi","status":"publish","type":"post","link":"https:\/\/www.waterandwastewatercourses.com\/calculate-sludge-volume-index-svi\/","title":{"rendered":"How to Calculate Sludge Volume Index – SVI"},"content":{"rendered":"\t\t
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SLUDGE VOLUME INDEX – SVI<\/strong><\/span><\/h2>

Sludge Volume Index, also known as SVI, describes how well the sludge from the aeration tank settles and compacts. It’s a common test question on the operator exam, so be sure to absorb this information before your next test, and try these practice problems on your own.\u00a0<\/a> \u00a0 \u00a0<\/span><\/p>

Sludge volume index ( SVI ) is fairly easy and quick to perform, and can be obtained using data from laboratory tests and a simple math formula. \u00a0Once you’ve solved a few problems, you’ll get the hang of it.<\/span><\/p>

In order to calculate sludge volume index ( SVI ), you will need two numbers. The first number comes from a 30-minute settleability test, where 1 liter of the mixed liquor sample from the aeration tank is poured into a container called a settleometer. The sludge is allowed to settle for 30 minutes, and the volume of the settled sludge is measured in mL\/L.<\/span><\/p>

The other number used in the sludge volume index ( SVI ) calculation comes from a MLSS test. It simply determines the suspended solids concentration of the sample from the aeration tank, in mg\/L.<\/span><\/p>

Sludge volume index ( SVI ) is calculated by dividing the settleability by the MLSS concentration. The SVI is always expressed in mL\/g.<\/span><\/p>

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FORMULA TO CALCULATE SLUDGE VOLUME INDEX – SVI:<\/span><\/strong><\/h2>

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Click here to<\/span>\u00a0enroll in a Wastewater Math Online Course<\/span><\/a><\/strong><\/h2>

When calculating the sludge volume index ( SVI ), make sure you don’t make any mistakes with the units.\u00a0 On math problems, it’s easy to make mistakes when you’re in a rush to complete the exam.\u00a0 Sometimes, the best thing to do is to slow down to ensure you don’t make any mistakes.\u00a0<\/span><\/p>

If you’re getting ready to take your operator certification exam, get in the habit of checking your work.\u00a0 At the test center, make sure to double-check your work before you submit it.\u00a0 You don’t want to get it wrong, simply because of a calculation error.\u00a0\u00a0<\/span><\/p>

HELPFUL RESOURCES<\/strong><\/span><\/h2>

Practice Exams<\/a><\/span><\/p>

Online Wastewater Math Course<\/span><\/a><\/p>

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If you’re looking for practice problems for wastewater math, click on the following link:\u00a0 Practice Problems<\/a><\/span><\/span><\/p>\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

SLUDGE VOLUME INDEX – SVI Sludge Volume Index, also known as SVI, describes how well the sludge from the aeration tank settles and compacts. It’s a common test question on the operator exam, so be sure to absorb this information before your next test, and try these practice problems on your own.\u00a0 \u00a0 \u00a0 Sludge …<\/p>\n

How to Calculate Sludge Volume Index – SVI<\/span> Read More \u00bb<\/a><\/p>\n","protected":false},"author":1,"featured_media":2408,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[106],"tags":[],"class_list":["post-2407","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sludge-volume-index"],"jetpack_featured_media_url":"https:\/\/www.waterandwastewatercourses.com\/wp-content\/uploads\/2016\/06\/521-391-lab.jpg","_links":{"self":[{"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/posts\/2407","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/comments?post=2407"}],"version-history":[{"count":24,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/posts\/2407\/revisions"}],"predecessor-version":[{"id":3778,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/posts\/2407\/revisions\/3778"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/media\/2408"}],"wp:attachment":[{"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/media?parent=2407"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/categories?post=2407"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.waterandwastewatercourses.com\/wp-json\/wp\/v2\/tags?post=2407"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}