{"id":7120,"date":"2024-07-15T07:16:03","date_gmt":"2024-07-15T07:16:03","guid":{"rendered":"https:\/\/longchangchemical.com\/?p=7120"},"modified":"2026-04-28T10:42:31","modified_gmt":"2026-04-28T10:42:31","slug":"nitrification-denitrification-20-questions-and-answers","status":"publish","type":"post","link":"https:\/\/longchangchemical.com\/de\/nitrification-denitrification-20-questions-and-answers\/","title":{"rendered":"Nitrifikation Denitrifikation 20 Fragen und Antworten"},"content":{"rendered":"<p><!-- lc-qa-start --><\/p>\n<p><strong>Quick answer:<\/strong> A practical sourcing decision for specialty chemicals starts with the use case first, then checks specification, compatibility, handling, and any regulatory or customer-specific requirement.<\/p>\n<p><!-- lc-qa-end --><\/p>\n<p><b>\u25b7 Frage 1: Welches ist das beste Kohlenstoff-Stickstoff-Verh\u00e4ltnis f\u00fcr die Denitrifikation in der Praxis?<\/b> <b>Liegt sie unter 5 oder 6-8?<\/b><\/p>\n<p>A: In der praktischen Anwendung halte ich pers\u00f6nlich es f\u00fcr besser, das Kohlenstoff-Stickstoff-Verh\u00e4ltnis auf 6-8 zu kontrollieren.<\/p>\n<p><b>\u25b7 Frage 2: Der Salzgehalt von 2% bewirkt eine gewisse Hemmung der nitrifizierenden Bakterien.<\/b><\/p>\n<p>A: Im Labor wird reines Natriumchlorid verwendet; in der tats\u00e4chlichen Anwendung kann es eine kleine Ver\u00e4nderung geben, aber im Grunde genommen wird die bakterielle Aktivit\u00e4t bei etwa 2% mehr als 2% st\u00e4rker beeintr\u00e4chtigt.<\/p>\n<p><b>\u25b7 Frage 3: Sind die von Ihnen eingef\u00fchrten Bakterien f\u00fcr das gew\u00f6hnliche Belebtschlammverfahren geeignet oder k\u00f6nnen sie mit der Kontaktoxidation und dem Tr\u00e4gerwirbelbett kombiniert werden?<\/b><\/p>\n<p>A: Sie k\u00f6nnen alle verwendet werden. Solange es sich um ein biochemisches System handelt, ist es theoretisch m\u00f6glich, spezielle Bakterienst\u00e4mme zur biologischen Verbesserung einzusetzen.<\/p>\n<p><b>\u25b7 Frage 4: Wie hoch ist die allgemeine Dosierung von nitrifizierenden Bakterien f\u00fcr kommunale Kl\u00e4ranlagen?<\/b><\/p>\n<p>A: Die Dosierung ist in der Regel auf zwei Daten, ist die Konzentration von Ammoniak-Stickstoff in den Zufluss Wasser, st\u00e4dtische Kl\u00e4ranlage ist in der Regel in der 30-50mg \/ L, die Abwasser-Kontrolle in der 5mg \/ L oder weniger, die zweite ist die Verweilzeit, st\u00e4dtische Kl\u00e4ranlage ist in der Regel nicht viel nitrifizierende Bakterien, die Dosierung von etwa einem in 100.000, ist es empfehlenswert, die drei Mal in der Anfangsphase, die die Wirkung einer besseren gew\u00e4hrleisten wird.<\/p>\n<p><b>\u25b7 Frage 5: Was ist N-serve in dem Hemmstoff f\u00fcr nitrifizierende Bakterien?<\/b><\/p>\n<p>A: Es handelt sich um eine sehr komplexe Verbindung 2-Chlor-6-(trichlormethyl)pyridin.<\/p>\n<p><b>\u25b7 Frage 6: Was ist wirksamer, Natriumcarbonat oder Natriumhydroxid, f\u00fcr die Alkalit\u00e4t, die w\u00e4hrend der Nitrifikation-Denitrifikation wieder zugef\u00fchrt werden muss, und worin besteht der Unterschied?<\/b><\/p>\n<p>A: Die Verwendung von Natriumcarbonat ist wirksamer, aber auch teurer.<\/p>\n<p><b>\u25b7 Frage 7: Wie gut vertragen nitrifizierende Bakterien einen toxischen Schock?<\/b> <b>Wie hoch ist die Belastung durch denitrifizierende Bakterien?<\/b><\/p>\n<p>A: Nitrifizierende Bakterien vertragen in der Regel keinen toxischen Schock, da sie autotroph sind und durch mehr Toxizit\u00e4t stark beeintr\u00e4chtigt werden. Es ist schwer zu sagen, wie hoch die Belastung durch denitrifizierende Bakterien allein ist, sie h\u00e4ngt von der Menge der Bakterien im Becken ab.<\/p>\n<p><b>\u25b7 Frage 8: In unserem AO-Betrieb betr\u00e4gt der pH-Wert des aeroben Tanks 6,2, der CSB 600 mg\/L und der Ammoniak 140 mg\/L. Wie viel pH-Einstellung ist angemessen?<\/b> <b>Ist die Zugabe von Soda im aeroben Tank in Ordnung?<\/b><\/p>\n<p>Antwort: Eine pH-Einstellung von 7,0-7,5 ist in der Regel ausreichend, und es ist in Ordnung, Natronflocken hinzuzuf\u00fcgen.<\/p>\n<p><b>\u25b7Q9: Ist Ihr Produkt solide?<\/b> <b>M\u00fcssen sie aktiviert werden?<\/b><\/p>\n<p>A: Nitrifizierende Bakterien sind fl\u00fcssig, denitrifizierende Bakterien sind fest.<\/p>\n<p><b>\u25b7 Frage 10: In Anbetracht der Tatsache, dass es viele F\u00e4lle von speziellen Abw\u00e4ssern mit begrenztem Wasservolumen gibt, m\u00f6chte ich nach den Kosten f\u00fcr die Stammaufbereitung fragen und wie lange es von der Aufbereitung bis zur Wirkung dauert, bis bestimmte Mikroorganismen zur technischen Probleml\u00f6sung eingesetzt werden k\u00f6nnen.<\/b><\/p>\n<p>A: Im Allgemeinen k\u00f6nnen Bakterienst\u00e4mme in gro\u00dfem Ma\u00dfstab sehr schnell hergestellt werden. Die Kosten f\u00fcr die Herstellung variieren je nach Bakterienstamm, Bacillus-St\u00e4mme haben niedrigere Kosten, nitrifizierende Bakterien sind chemoautotroph, die Kosten sind relativ hoch; au\u00dferdem sind die Kosten hoch, wenn eine spezielle Lagerung erforderlich ist.<\/p>\n<p>In der Regel werden die St\u00e4mme eingef\u00fchrt, und die Wirkung ist nach etwa einer Woche zu sehen.<\/p>\n<p><b>\u25b7 Frage 11: Gibt es einen nat\u00fcrlichen Abschw\u00e4chungsprozess, nachdem die speziellen Bio-Bakterien eingesetzt wurden und das einstr\u00f6mende Wasser keinen Schock erleidet?<\/b> <b>In dem von Ihnen angef\u00fchrten Fall der Abwasserbehandlung in der Petrochemie gingen die Abw\u00e4sser zun\u00e4chst deutlich zur\u00fcck, dann gab es eine allm\u00e4hliche Fluktuation und einen Anstieg im Laufe der Zeit.<\/b><\/p>\n<p>A: Das h\u00e4ngt mit dem Bakterienstamm zusammen. Einige Bakterien k\u00f6nnen in dieser Umgebung lange Zeit mit geringer oder gar keiner Abschw\u00e4chung existieren, wie z. B. nitrifizierende Bakterien. Andere Bakterien zerfallen \u00fcber einen l\u00e4ngeren Zeitraum, so dass sie erg\u00e4nzt werden m\u00fcssen. Dies h\u00e4ngt mit den Eigenschaften der St\u00e4mme selbst zusammen, da ihre Einf\u00fchrung in ein Belebtschlammsystem mit den einheimischen Mikroorganismen konkurrieren wird.<\/p>\n<p><b>\u25b7 Frage 12: Gibt es Daten \u00fcber die Nitrifikationsrate, die Denitrifikationsrate, d.h. wie viel Gramm Ammoniumstickstoff oder Nitrat werden von einem einzigen Gramm Bakterien pro Stunde abgebaut?<\/b><\/p>\n<p>A: Die beste Nitrifikationsrate kann 800mgNH4+-N\/(L-h) betragen, die Denitrifikationsrate ist schwieriger zu messen, und genaue Daten sind noch nicht verf\u00fcgbar.<\/p>\n<p><b>\u25b7 Frage 13: Ich sehe, dass es eine Menge Literatur gibt, die besagt, dass nitrifizierende Bakterien auch Anforderungen an die Ausgangskonzentration haben, was denken Sie?<\/b><\/p>\n<p>A: Je h\u00f6her die Ammoniakkonzentration, desto st\u00e4rker werden die nitrifizierenden Bakterien gehemmt, obwohl sie die Aufgabe haben, Ammoniak zu entfernen.<\/p>\n<p><b>\u25b7Frage 14: K\u00f6nnen Ihre ausgereiften Produkte an verschiedene Abwasserqualit\u00e4ten angepasst werden und wie lange dauert die Anpassung an unterschiedliche Wasserqualit\u00e4ten?<\/b><\/p>\n<p>A: Das bakterielle Mittel hat eine kurze Anpassungszeit f\u00fcr unterschiedliche Wasserqualit\u00e4ten. Im Allgemeinen k\u00f6nnen die nitrifizierenden Bakterien in drei Tagen arbeiten, aber es wird garantiert, dass sie in sieben Tagen definitiv arbeiten.<\/p>\n<p><b>\u25b7Frage 15: Haben Sie die Wirkung von Tensiden auf nitrifizierende Bakterien gemessen, und welche anderen Hemmstoffe f\u00fcr nitrifizierende Bakterien gibt es?<\/b><\/p>\n<p>A: Tenside wurden nicht gemessen, und es gibt viele Arten von Inhibitoren, das k\u00f6nnen Sie selbst \u00fcberpr\u00fcfen.<\/p>\n<p><b>\u25b7Q16: Was sind neben Acetylen einige h\u00e4ufige toxische Substanzen, die nitrifizierende Bakterien und nitrosochemische Bakterien beeintr\u00e4chtigen?<\/b><\/p>\n<p>A: Einige g\u00e4ngige Antibiotika gegen gramnegative Bakterien, Schwermetalle (Cu und andere) sind ebenfalls empfindlicher.<\/p>\n<p><b>\u25b7 Frage 17: Wie lange bleiben denitrifizierende Bakterien in der anoxischen Zone, um optimale Ergebnisse zu erzielen?<\/b><\/p>\n<p>A: Die Nitratmenge und die Bakterienkonzentration wirken sich auf die Verweilzeit aus; je mehr Nitrat, desto l\u00e4nger sollte die Verweilzeit sein.<\/p>\n<p><b>\u25b7 Frage 18: Wie lang ist der Generationszyklus von nitrifizierenden Bakterien und denitrifizierenden Bakterien?<\/b><\/p>\n<p>A: Nitrifizierende Bakterien ist eine chemoautotrophe Bakterie, die Reproduktion ist langsamer, der Generationszyklus ist l\u00e4nger, in der Regel die Reproduktion einer Generation ist 10h oder sogar Dutzende von Stunden, die auch ein Grund f\u00fcr die hohen Kosten ist. Denitrifizierende Bakterien ist eine gro\u00dfe Klasse, darunter viele Arten von Bakterien, k\u00f6nnen Nitrat in Stickstoff umwandeln sind, Generation Zyklus wird k\u00fcrzer, Zucht schneller, jetzt h\u00e4ufig auf dem Markt, der Generation Zyklus ist im Grunde in Dutzenden von Minuten.<\/p>\n<p><b>\u25b7 Frage 19: Der R\u00fcckfluss geht direkt zur\u00fcck in den anaeroben Tank, k\u00f6nnen die denitrifizierenden Bakterien voll wirken?<\/b><\/p>\n<p>A: Die R\u00fcckf\u00fchrung in den anaeroben Bereich sicherlich nicht, da die Denitrifikation in einer anoxischen Umgebung erfolgen sollte.<\/p>\n<p><b>\u25b7Frage 20: Wie hoch ist die Ausgangskonzentration von Ammoniak, um die Nitrifikation zu hemmen?<\/b><\/p>\n<p>A: Verschiedene Bakterienst\u00e4mme reagieren unterschiedlich auf die Ausgangskonzentration von Ammoniak. Normalerweise hemmt eine Ammoniakkonzentration von \u00fcber 100 mg\/L die nitrifizierenden Bakterien.<\/p>\n<p>&nbsp;<\/p>\n<table style=\"border-collapse: collapse; width: 667.52pt;\" border=\"0\" width=\"890\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr style=\"height: 63.00pt;\">\n<td class=\"et3\" style=\"height: 63pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"84\"><strong>Phosphonate Antiscalants, Korrosionsinhibitoren und Chelatbildner<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/de\/products\/atmp-cas-6419-19-8\/\">Aminotrimethylenphosphons\u00e4ure (ATMP)<\/a><\/span><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 6419-19-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><span style=\"color: #00ccff;\"><a style=\"color: #00ccff;\" href=\"https:\/\/longchangchemical.com\/de\/products\/hedp-cas-2809-21-4-2\/\">1-Hydroxy-Ethyliden-1,1-Diphosphons\u00e4ure (HEDP)<\/a><\/span><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 2809-21-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/edtmpa-solid-cas-1429-50-1\/\"><span style=\"color: #00ccff;\">Ethylendiamintetra(methylenphosphons\u00e4ure) EDTMPA (fest)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 1429-50-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/dtpmpa-cas-15827-60-8\/\"><span style=\"color: #00ccff;\">Diethylentriamin Penta (Methylenphosphons\u00e4ure) (DTPMPA)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 15827-60-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/pbtc-cas-37971-36-1\/\"><span style=\"color: #00ccff;\">2-Phosphonobutan-1,2,4-Tricarbons\u00e4ure (PBTC)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 37971-36-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/hpaa-cas-23783-26-8\/\"><span style=\"color: #00ccff;\">2-Hydroxyphosphonoessigs\u00e4ure (HPAA)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 23783-26-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/hmdtmpa-cas-23605-74-5\/\"><span style=\"color: #00ccff;\">HexaMethylenDiaminTetra(MethylenPhosphons\u00e4ure) HMDTMPA<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 23605-74-5<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Polyamino-Polyether-Methylenphosphons\u00e4ure (PAPEMP)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\"><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/bhmtpmp-cas-34690-00-1\/\"><span style=\"color: #00ccff;\">Bis(HexaMethylen-Triamin-Penta-(Methylenphosphons\u00e4ure)) BHMTPMP<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 34690-00-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/hempa-cas-5995-42-6\/\"><span style=\"color: #00ccff;\">Hydroxyethylamino-Di(Methylenphosphons\u00e4ure) (HEMPA)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 5995-42-6<\/td>\n<\/tr>\n<tr style=\"height: 15.75pt;\">\n<td class=\"et3\" style=\"height: 15.75pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"21\"><strong>Salze von Phosphonaten<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/atmp-na4-cas-20592-85-2\/\"><span style=\"color: #00ccff;\">Tetra-Natriumsalz der Aminotrimethylenphosphons\u00e4ure (ATMP-Na4)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 20592-85-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/atmp-na5-cas-2235-43-0\/\"><span style=\"color: #00ccff;\">Penta-Natriumsalz der Aminotrimethylenphosphons\u00e4ure (ATMP-Na5)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 2235-43-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/hedp-na-cas-29329-71-3\/\"><span style=\"color: #00ccff;\">Mononatrium von 1-Hydroxy-Ethyliden-1,1-Diphosphons\u00e4ure (HEDP-Na)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 29329-71-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/hedp-na2-cas-7414-83-7\/\"><span style=\"color: #00ccff;\">\u00a0(HEDP-Na2)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 7414-83-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Tetra-Natriumsalz der 1-Hydroxy-Ethyliden-1,1-Diphosphons\u00e4ure (HEDP-Na4)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 3794-83-0<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Kaliumsalz der 1-Hydroxy-Ethyliden-1,1-Diphosphons\u00e4ure (HEDP-K2)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 21089-06-5<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Ethylendiamintetra(methylenphosphons\u00e4ure) Pentanatriumsalz (EDTMP-Na5)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 7651-99-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Hepta-Natriumsalz von Diethylentriamin-Penta-(Methylenphosphons\u00e4ure) (DTPMP-Na7)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 68155-78-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Natriumsalz von Diethylentriamin-Penta-(Methylenphosphons\u00e4ure) (DTPMP-Na2)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 22042-96-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">2-Phosphonobutan-1,2,4-Tricarbons\u00e4ure, Natriumsalz (PBTC-Na4)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 40372-66-5<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Kaliumsalz von HexaMethylenDiaminTetra(MethylenPhosphons\u00e4ure) HMDTMPA-K6<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 53473-28-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Teilweise neutralisiertes Natriumsalz von Bishexamethylentriaminpenta(methylenphosphons\u00e4ure) BHMTPH-PN(Na2)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 35657-77-3<\/td>\n<\/tr>\n<tr style=\"height: 31.50pt;\">\n<td class=\"et3\" style=\"height: 31.5pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"42\"><strong>Polycarboxylisches Antiscalant und Dispergiermittel<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Polyacryls\u00e4ure (PAA) 50% 63%<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 9003-01-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Polyacryls\u00e4ure-Natriumsalz (PAAS) 45% 90%<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 9003-04-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/hpma-cas-26099-09-2\/\"><span style=\"color: #00ccff;\">Hydrolysiertes Polymaleins\u00e4ureanhydrid (HPMA)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 26099-09-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Copolymer aus Maleins\u00e4ure und Acryls\u00e4ure (MA\/AA)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 26677-99-6<\/td>\n<\/tr>\n<tr style=\"height: 17.00pt;\">\n<td class=\"et5\" style=\"height: 17.00pt;\" height=\"22\">Acryls\u00e4ure-2-Acrylamido-2-Methylpropansulfons\u00e4ure-Copolymer (AA\/AMPS)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 40623-75-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">TH-164 Phosphinocarbons\u00e4ure (PCA)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 71050-62-9<\/td>\n<\/tr>\n<tr style=\"height: 31.50pt;\">\n<td class=\"et3\" style=\"height: 31.5pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"42\"><strong>Biologisch abbaubares Antiscalant und Dispergiermittel<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 40.50pt;\">\n<td class=\"et5\" style=\"height: 54.00pt;\" rowspan=\"2\" height=\"72\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/pesa-cas-51274-37-4109578-44-1\/\"><span style=\"color: #00ccff;\">Natrium der Polyepoxibernsteins\u00e4ure (PESA)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 51274-37-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 109578-44-1<\/td>\n<\/tr>\n<tr style=\"height: 40.50pt;\">\n<td class=\"et5\" style=\"height: 54.00pt;\" rowspan=\"2\" height=\"72\"><a href=\"https:\/\/longchangchemical.com\/de\/products\/pasp-cas-181828-06-8-35608-40-6\/\"><span style=\"color: #00ccff;\">Natriumsalz der Polyasparagins\u00e4ure (PASP)<\/span><\/a><\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 181828-06-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 35608-40-6<\/td>\n<\/tr>\n<tr style=\"height: 27.00pt;\">\n<td class=\"et3\" style=\"height: 27pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"36\"><strong>Biozid und Algizid<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 40.50pt;\">\n<td class=\"et5\" style=\"height: 67.50pt;\" rowspan=\"3\" height=\"90\">Benzalkoniumchlorid(Dodecyl-Dimethyl-Benzylammoniumchlorid)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 8001-54-5,<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 63449-41-2,<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 139-07-1<\/td>\n<\/tr>\n<tr style=\"height: 40.50pt;\">\n<td class=\"et5\" style=\"height: 81.00pt;\" rowspan=\"2\" height=\"108\">Isothiazolinone<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 26172-55-4,<\/td>\n<\/tr>\n<tr style=\"height: 40.50pt;\">\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 2682-20-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Tetrakis(hydroxymethyl)phosphoniumsulfat(THPS)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 55566-30-8<\/td>\n<\/tr>\n<tr style=\"height: 17.00pt;\">\n<td class=\"et5\" style=\"height: 17.00pt;\" height=\"22\">GLUTARALDEHYD<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 111-30-8<\/td>\n<\/tr>\n<tr style=\"height: 31.00pt;\">\n<td class=\"et3\" style=\"height: 31pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"41\"><strong>Korrosionsinhibitoren<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Natriumsalz von Tolyltriazol (TTA-Na)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 64665-57-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Tolyltriazol (TTA)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 29385-43-1<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Natriumsalz von 1,2,3-Benzotriazol (BTA-Na)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 15217-42-2<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">1,2,3-Benzotriazol (BTA)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 95-14-7<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Natriumsalz von 2-Mercaptobenzothiazol (MBT-Na)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 2492-26-4<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">2-Mercaptobenzothiazol (MBT)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 149-30-4<\/td>\n<\/tr>\n<tr style=\"height: 15.75pt;\">\n<td class=\"et3\" style=\"height: 15.75pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"21\"><strong>Sauerstoff-Scavenger<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Cyclohexylamin<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 108-91-8<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Morpholin<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 110-91-8<\/td>\n<\/tr>\n<tr style=\"height: 15.75pt;\">\n<td class=\"et3\" style=\"height: 15.75pt; width: 667.5pt; text-align: center;\" colspan=\"2\" width=\"890\" height=\"21\"><strong>Andere<\/strong><\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Natrium-Diethylhexyl-Sulfosuccinat<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 1639-66-3<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">Acetylchlorid<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 75-36-5<\/td>\n<\/tr>\n<tr style=\"height: 13.50pt;\">\n<td class=\"et5\" style=\"height: 13.50pt;\" height=\"18\">TH-GC Gr\u00fcner Chelatbildner (Glutamins\u00e4ure, N,N-Diessigs\u00e4ure, Tetra-Natriumsalz)<\/td>\n<td class=\"et6\" style=\"width: 159.75pt;\" width=\"213\">CAS-Nr. 51981-21-6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><!-- lc-commercial-start --><\/p>\n<h2>A practical sourcing checklist for specialty chemical applications<\/h2>\n<p>Specialty-chemical purchasing usually goes more smoothly when teams define the end-use risk first and then verify purity, compatibility, processing behavior, and regulatory fit as one package. That often prevents expensive rework after the material reaches production or customer testing.<\/p>\n<ul>\n<li><strong>Start from the end-use standard:<\/strong> food contact, plastics, coatings, preservation, and industrial processing all create different specification priorities.<\/li>\n<li><strong>Check compatibility in the real system:<\/strong> a compliant material can still be the wrong commercial choice if it destabilizes the formulation or process.<\/li>\n<li><strong>Review handling and storage:<\/strong> some specialty chemicals succeed or fail based on how they behave during blending, transport, or long-term storage.<\/li>\n<li><strong>Use sample validation before scale-up:<\/strong> pilot checks on the intended formula or production step usually save the most time and cost.<\/li>\n<\/ul>\n<h3>Recommended product references<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/photoinitiator-cat-261-cas-32760-80-8\/\">CHLUMINIT 261<\/a>:<\/strong> A direct cationic-photoinitiator reference when cationic curing routes are being screened.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/hpma-monomer-cas-27813-02-1\/\">CHLUMICRYL HPMA<\/a>:<\/strong> Useful when more polarity and adhesion support are needed in the reactive package.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/agesindp-d2608r\/\">CHLUMICRYL DP-D2608R<\/a>:<\/strong> A direct dispersant reference for coating and ink formulation work.<\/li>\n<li><strong><a href=\"https:\/\/longchangchemical.com\/de\/product\/chlumiwe-3071-organic-silicone-surfactant-organosilicone-wetting-agent\/\">CHLUMIWE 3071<\/a>:<\/strong> Useful when organosilicone wetting support is needed in a broad application screen.<\/li>\n<\/ul>\n<h3>FAQ for buyers and formulators<\/h3>\n<p><strong>Why is specification matching not enough for specialty chemicals?<\/strong><br \/>Because a material can meet the basic spec and still fail in the actual formulation, process, or downstream compliance requirement.<\/p>\n<p><strong>Should price be the first filter for specialty raw materials?<\/strong><br \/>Price matters, but technical fit, compliance, and process reliability usually decide whether the material is truly economical in use.<\/p>\n<p><!-- lc-commercial-end --><\/p>","protected":false},"excerpt":{"rendered":"<p>\u25b7 Question 1: What is the better carbon to nitrogen ratio for denitrification in practice? Is it below 5 or 6-8? A: In practical application, I personally think it is<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[168],"tags":[],"class_list":["post-7120","post","type-post","status-publish","format-standard","hentry","category-water-treatment"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.3.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Nitrification Denitrification 20 Questions and Answers - Longchang Chemical<\/title>\n<meta name=\"description\" content=\"\u25b7 Question 1: What is the better carbon to nitrogen ratio for denitrification in practice? Is it below 5 or 6-8? 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