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Between 30 and 40 ppm of alum for household wastewater, often more for industrial wastewater, is added to the water so that the negatively charged colloidal particles clump together into " flocs ", which then float to the top of the liquid, settle to the bottom of the liquid, or can be more easily filtered from the liquid, prior to further filtration and disinfection of the water.
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Between and 30
Between 85 to 200 members of the SA leadership and other political adversaries, including Gregor Strasser, were killed between 30 June and 2 July 1934 in these actions, known as the Night of the Long Knives.
Between 1939 and 1945, Holden's produced more than 30, 000 bodies for the Australian and US forces and manufactured a wide range of equipment, including field guns, aircraft, boats, including truck, aeroplane and marine engines and components.
Between 20, 000 and 30, 000 ex-poppyfarmers left the Kokang region as a result of the ban in 2002.
Between 1348 and 1359 the Black Death wiped out an estimated 30 % of Europe's population, as well as a significant percentage of Asia's population.
* 2007 – Between 30, 000 and 100, 000 people take part in anti-government protests in Yangon, Burma, the largest in 20 years.
Between 1918 and 1922 typhus caused at least 3 million deaths out of 20 – 30 million cases.
Between 1957 and 1964, Simon wrote, recorded, and released more than 30 songs, occasionally reuniting with Garfunkel as Tom & Jerry for some singles, including " Our Song " and " That's My Story ".
Between the end of the Revolutionary War and 1812, less than 30 years, Britain, France, Naples, the Barbary States, Spain, and the Netherlands seized approximately 2, 500 American ships.
Between September 30 and October 3 1998, and most recently again on 22 May 2011, officials from the Ministry of Intelligence entered the homes of academic staff of the BIHE, seizing books, computers and personal effects and shutting down buildings used for the school.
Between the breach of the Yenisei and Lake Khövsgöl at 100 ° 30 ' E. the system bears also the name of Yerghik-taiga.
Between 2: 30 pm and 2: 40 pm, there was a build-up of supporters outside the turnstiles facing Leppings Lane, eager to enter the stadium before the game began.
Between 07: 30 and 08: 30 elements of G / 16, E / 16, and E / 116 came together and climbed the bluffs at Easy Red, between WN-64 ( defending the E-1 draw ) and WN-62 ( the E-3 draw ).
Between 1832 and 1834, coins denominated in both Polish and Russian currencies were issued, for 1 złoty ( 15 kopeck ), 2 złote ( 30 kopeck ), 5 złotych ( ¾ ruble ), 10 złotych ( 1½ ruble ) and 20 złotych ( 3 ruble ).
Between 1921 and 1924, the number of Americans in Paris swelled from 6, 000 to 30, 000.
Between the death of Cleopatra, on August 12, 30 BC, up to his own death on August 23, 30 BC, he was nominally the sole pharaoh.
Between 1 March 1883 and 30 September 1885 the line also served stations from Ealing Broadway to Windsor, running on the Great Western Main Line.
Between 1966 and 1974, Hung worked on over 30 wuxia films for Shaw Brothers, progressing through the roles of extra, stuntman, stunt co-ordinator and ultimately, action director.
Between 10 — 30 % of all people with psoriasis also have psoriatic arthritis.
Between March and July 2006, YouTube grew from 30 to 100 million views of videos per day.
On 28 November 2006, Víctor Montiglio, charged of this case, ordered Pinochet's house arrest Between 5, 000 and 30, 000 people are believed to have been killed in the operations of Pinochet's regime.
Between 30 and 60 buildings were completely destroyed or washed away as the water of the South Fork of the Shenandoah River billowed its way through town.
Between 1885 and 1914, Britain brought nearly 30 % of Africa's population under its control, to 15 % for France, 9 % for Germany, 7 % for Belgium and 1 % for Italy: Nigeria alone contributed 15 million subjects to Britain, more than in the whole of French West Africa, or the entire German colonial empire.
Between and 40
Between 1200 and 1425 the monastery of Gorgona, Benedictine for much of that time and in the territory of Pisa, acquired about 40 legal papers of various sorts written on Corsica.
Between 1991 and 2010, 40, 301 mergers and acquisitions with an involvement of German firms with a total known value of 2, 422 bil.
Between 50-100 million people are affected by Dengue fever every year and 40, 000 people die from it.
Between 1764 and 1771, the average importation of slaves varied between 10 000 – 15 000, by 1786 about 28 000, and, from 1787 onward, the colony received more than 40 000 slaves a year.
Between 1904 and 1914, around 40, 000 Jews settled in Southern Syria ( the Second Aliyah ).
Between 1919 and 1923, 40, 000 Jews arrived in Palestine, mainly escaping the post-revolutionary chaos of Russia ( 3rd Aliyah ).
Between and, 60 percent of hail is still within the thunderstorm, though 40 percent now lies within the clear air under the anvil.
Between 1980 and 2000 total fecundity in Kenya fell by about 40 %, from some eight births per woman to around five.
Between 1936 and 1938 the Popular Front enacted a law mandating 12 days ( 2 weeks ) each year of paid vacation for workers, and a law limiting the work week to 40 hours, excluding overtime.
Between 14 and 40 Aborigines are killed by British colonists.
* August 3 – Between 40 – 76 villagers are killed in the Oued El-Had and Mezouara massacre in Algeria.
Between 40 and 50 % of all children who develop cerebral palsy were born prematurely.
Between 40 to 45 percent of Americans diagnosed with diabetes have some stage of diabetic retinopathy.
Between 1990 and 1995, gross wages in the east rose from 35 % to 74 % of western levels, while pensions rose from 40 % to 79 %.
According to Geoffrey Parker, " Between 1618 and 1640 some 40, 000 Scotsmen – perhaps 15 % of the total adult males in the kingdom – crossed to Europe to fight in the Thirty Years ' War.
Between 1936 and 1938 the Popular Front enacted a law mandating 12 days ( 2 weeks ) each year of paid vacation for workers, and a law limiting the work week to 40 hours, excluding overtime.
Between February and June, he won 40 consecutive clay court matches ( the longest winning streak on the surface since Björn Borg had won 46 in 1977 – 79 ).
Between 1990 and 2000, poverty was reduced from 40 percent of the population to 20 percent.
Between 2002 and 2008, Bowdoin College decreased its CO2 emissions by 40 %.
Between mid-June 17 and mid-October, 24 launching pads, 42 R-12 rockets, including six training ones, some 45 nuclear warheads, 42 Il-28 bombers, a fighter aircraft regiment ( 40 MiG-21 aircraft ), two Anti-Air Defense divisions, four mechanized infantry regiments, and other military units ( 47, 000 troops in total ) were transferred.
Between 1764 and 1771, the average annual importation of slaves varied between 10, 000 and 15, 000 ; by 1786 it was about 28, 000, and from 1787 onward, the colony received more than 40, 000 slaves a year.
Between 70 % and 80 % identify as Christian ; 40 % of those consist of immigrants who were not Christians at the time of their arrival in the United States.
Between 1921 and 1930, Ozone Park saw a population increase of over 180 % from 40, 000 to 112, 950 people.
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