Wastewater analysis in treatment plants • Chemical oxygen demand (COD) by titration • Anions and cations by ion chromatography 02 Metrohm ... • is the global market leader in titration • offers a complete portfolio for NIR and Raman analysis, in addition to all of the methods of • ion analyses – titration, voltammetry, and ion chromatography • is a Swiss company and manufactures exclusively in Switzerland • grants a 3-year instrument warranty and a 10-year warranty on chemical suppressors for • anion chromatography • provides you with unparalleled application expertise • offers you more than 1800 applications free of charge • supports you with expert service through local representatives and regional support centers • is not listed on the stock exchange, but is owned by a foundation • gives the interest of customers and employees priority over maximizing profit Professional support for wastewater analysis in treatment plants Operators of wastewater treatment plants are obliged to Metrohm is able to support you with top-quality analyti-03 monitor their installation to control its performance. Part cal instruments, extensive application know-how and of this duty − depending on the size of the treatment first-class onsite service. If you have any analytical ques-plant − is regular determination of various parameters in tions, our product specialists would be happy to assist the laboratory. you at any time. Selected standards from the field of treatment plant analysis The following selected standards describe numerous in - Metrohm analyzers meet all the minimum requirements ter national test and requirement specifications. and limits set in the respective standards. Parameter Standard Method ISO 6060 ISO 15705 Chemical oxygen demand (COD) Titration ASTM D1252 DIN 38409-44 Fluoride EPA 340.2 Titration Chloride DIN 38405-1 Titration Alkalinity CaCO EPA 310.1 Titration 3 Total hardness, Ca2+, Mg2+ DIN 38406-3 Titration ISO 10304-1 Anions, e.g., F–, Cl–, Br–, NO –, NO –, PO 3–, SO 2– etc. Ion chromatography 2 3 4 4 EPA 300.0/EPA 9056 Cations, e.g., Li+, Na+, K+, NH +, Mg2+, Ca2+ etc. ISO 14911:1998 Ion chromatography 4 Oxyhalides EPA 300.1, Part B Ion chromatography ISO 10304-3 Chromium(VI) Ion chromatography EPA 218.7 Zn, Cd, Pb, Cu, Tl, Ni, Co DIN 38406-16 Voltammetry EDTA, NTA DIN 38413-5 Voltammetry ISO 8245 Total organic carbon content (TOC) DIN EN 1484 Process Analysis EPA 415.1 Chemical oxygen demand according to DIN 38409-44 Definition 04 Automation solutions The chemical oxygen demand (COD) is a measured value Manual determination of the COD value involves a great for the substances in a certain volume of water that can deal of work and, because the individual manual steps be oxidized by chromate. are difficult to reproduce, usually means inaccurate re - sults. Metrohm resolves these problems with a fully auto-Significance in treatment plants mated system. In treatment plants the COD value is a valuable indicator for evaluating treatment performance. Here, with the COD balance, it is possible, amongst other things, to ass ess the oxygen demand in the aeration tank and to describe the sludge stabilization conditions. The MATi 12 system for fully automated COD determination Metrohm COD systems 05 Metrohm offers different automation systems for COD vessels are rinsed intensively several times with deminer-determination according to the scale of testing. With alized water. These precleaned vessels can then be used these systems, the solutions needed for digestion (potas-without any problems, as they no longer contain concen-sium dichromate and silver sulfate-sulfuric acid) can be trated acids. added fully automatically − if need be, with cooling. The unpleasant handling of these aggressive and harmful The indication of the titration with a maintenance-free solutions is reduced to a minimum, saving time and gold Titrode, together with the monitoring possibilities money. incorporated within the system, makes fully automatic COD titration easy, precise, and reliable. All the methods Following digestion, the samples are titrated fully auto-needed for COD determination have been worked out matically with the same system directly in the reaction and are ready for use. With the tiamo software supplied vessels. At the end of each titration, the titrated sample with the equipment it is possible to manage all the meth-is drawn off with the help of a peristaltic pump and the ods and determinations with the greatest of ease. Benefit from COD analyzers from the market leader You save time You save money • Automatic addition of all the • Every day due to low ongoing necessary reagents costs by comparison with other • Up to 40 samples can be methods analyzed fully automatically • The investment soon pays for itself Fully automatic determination of the COD value at Agrolab Bruckberg with two 855 COD Robotic Titrosamplers 06 Simultaneous determination of anions and cations with 930 Compact IC Flex instruments in combination with a 858 Professional Sample Processor, optionally extendable, e.g., with Inline Dilution, Inline Ultrafiltration or Inline Dialysis. Anions and cations by means of ion chromatography Metrohm professional ion chromatography 220 07 Modern ion chromatography (IC) allows efficient separa-200 chloride tion of inorganic and low-molecular organic anions and 180 cations. The ions can be determined in parallel over a 160 140 wide concentration range. 120 100 tivity [µS/cm] The spurious particles, colloids, algae, or bacteria present 80 sulfate in many wastewater samples are removed fully automa - Conduc 60 tically by, for example, Inline Ultrafiltration or Inline 40 20 nitrate Dialysis before analysis. The 930 Compact IC Flex, in fluoride nitrite 0 com bi na tion with the 858 Professional Sample Processor, 0 2 4 6 8 10 12 14 16 allows for this. Additionally, samples can be automati-Time [min] cally diluted. Determination of anions in wastewater; column: Metrosep A Supp 5 - 150/4.0; eluent: 3.2 mmol/L Na CO , 1.0 mmol/L 2 3 The intelligent chromatography software MagIC Net NaHCO , 0.7 mL/min; column temperature: 25 °C; sample vol-3 ume: 20 µL; conductivity detection with sequential suppres-then takes charge of instrument control, data manage-sion ment, and system monitoring. If need be, the system can also be configured as «one-button IC» for personnel from other areas of work. Your advantages with Metrohm ion chromatography You save time You save money • Simultaneous determination of • Low ongoing costs, e.g., for an anions and cations anion/cation system with sample • Flexible sample changer changer approx. € 1800 p.a. for • Inline Dilution, Inline 1000 wastewater samples Ultrafiltration or Inline Dialysis • 10-year warranty of chemical suppressors for anion chromatography • 3-year warranty on all instruments www.metrohm.com G, CH-9100 Herisau ohm A witzerland by Metr , printed in S SW 10 Subject to change Layout by Ecknauer+Schoch A 8.000.5142EN – 2015-