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The following documents match your search:
The following documents match your search:
| Application | |||
| 1 |
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Optimal nutrient ratios for wastewater treatment | |
| Author: Michael Winkler. For observing the legal requirements of treated wastewater, the operator of a wwtp has to manage the wastewater treatment process thoroughly to avoid exceeding the limit values. Among physical and chemical procedures the effluent treatment is based on the biological treatment by the microorganisms of the activated sludge. Therefore good knowledge of nutrient need and composition of the activated sludge is very important for operating at full capacity. Causes, consequences and counteractive measures for unfavourable nutrient ratio are described in this report; 8 pages | |||
| Date: 2008-05-16 |
991 KB
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| 2 |
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COD, Cost effective refilling of activated carbon filter | |
| The leachate from a landfill in North Rhine-Westphalia, Germany, used to be transported by road tanker to the nearest sewage treatment plant. Since 1998 a biological treatment plant has been in operation, which has now handled more than 650,000 m3 of leachate, at a maximum rate of 350 m3/day. Four activated carbon filters, each filled with 20 m3, handle the residual COD load. The wastewater is fed into them in a sequence that depends on how long the activated carbon has been in use. A freshly regenerated filter discharges treated wastewater with a COD concentration of about 50 mg/l; this is well below the limit of 400 mg/l and is therefore a major cost factor. This can be avoided with the help of the COD cuvette test. 4 pages | |||
| Date: 2007-02-21 |
763 KB
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| 3 |
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Degrees of Degradation – Spotlight on nitrogen (TNb) | |
| Introduction, legal requirements in Europe and Germany, nitrogen parameters, sampling and preparation, number of measurements, instruments, literature; 4 pages | |||
| Date: 2003-09-01 |
133 KB
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| FAQ | |||
| 4 |
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COD - Can the digestion for the determination of COD also be carried out in a high-temperature thermostat (HT)? | |
| COD - High-bias results in comparison with reference method High-bias results in comparison with reference method DIN 38 409 – H41 may be obtained if: • the chloride interference limit is exceeded In order to avoid high-bias results in the Cuvette Test, chloride ions can be masked by mercury if they are present in quantities below the content shown in the table. Samples with a higher chloride content must be diluted. Cuvette Test Masking possible up to ..... chloride • Turbidity in the cuvette after digestion when COD tests LCK 514, LCK 114, LCK 014 and LCK 914 are used. • In the above Cuvette Tests, the green color of chromium(III) compounds is measured. Dichromate ions (Cr(VI) compounds) are reduced to chromium(III) compounds by the organic components of the sample. If a sample is still turbid after the digestion, this reinforces the green color, so that it seems as though there is a higher concentration of chromium(III) compounds. Careful inversion of the cuvette while its contents are hot but no longer boiling reduces the sedimentation time of any remaining solid particles, and suppresses the haze formation caused by density differences. Evaluate at room temperature. - LCK514, LCK114, LCK014 and LCK914 | |||
| Date: 2005-08-02 | |||
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| Information | |||
| 5 |
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10 x COD: a COD range for every application | |
| The COD is still one of the most important parameters in waste water analysis. Both for evaluation of (waste) water and for controling of wwtp. This report shows the benefits of LANGE COD cuvette tests such as: - method based on ISO Standard; - minimized consumption of chemicals; - reliable and approved results;- 10 practice-oriented measuring ranges (the customer needn´t dilute his sample); - only marginal amount of work; - high operational safety; - cost-saving method; - free and professional recycling of used reagents in our certified in-house Environmental Center; 4 pager | |||
| Date: 2008-11-06 |
374 KB
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| 6 |
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LANGE cuvette test | |
| Produkt Information: LANGE cuvette test, 2 pages with benefits, technical details: IBR, Integrated barcode reader, 10 fold measuremt system; chart of variety of paramters and measuring ranges | |||
| Date: 2006-08-24 |
163 KB
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| 7 |
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Colourcode - Cuvettes show their colours | |
| More clarity through colourcoding; uniformly coloured packaging, cuvette labels and caps improve daily operations; new colour system quickly explained; 2 pages | |||
| Date: 2005-02-04 |
128 KB
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| 8 |
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HT 200S, High-Temperature Thermostat | |
| The 15-minute digestion for wastewater analysis: fast and effective; description, advantages, technical data and relevant tests; 2 pages | |||
| Date: 2002-07-15 |
215 KB
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| Quality data | |||
| 9 |
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Quality certificate - Technical data for LCK914 - COD cuvette test | |
| Technical data for LCK914 from calibration as well as detection limit and determination limit. | |||
| Date: 2005-04-27 |
85.7 KB
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| Working procedure | |||
| 10 |
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Working procedure LCK 914 COD cuvette test | |
| measuring range 5000-60,000 mg/l, 5-60 g/l | |||
| Date: 2007-06-01 |
193 KB
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| 11 |
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Working procedure LCK 914 COD cuvette test | |
| measuring range 5000-60,000 mg/l, 5-60 g/l | |||
| Date: 2005-10-17 |
193 KB
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| 12 |
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Working procedure LCK 914 COD cuvette test | |
| measuring range 5000-60,000 mg/l, 5-60 g/l | |||
| Date: 2003-01-31 |
193 KB
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| 13 |
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Programming instruction for CADAS 100 LPG>=210, LCK 914 COD | |
| Detailed programming steps | |||
| Date: 2002-02-19 |
55.4 KB
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