MBR System KD 40. Recycle Water - Technical Water/ Replacement for Clarifiers Watch Product Video

Transcription

1 MBR System KD 40 Recycle Water - Technical Water/ Replacement for Clarifiers Watch Product Video

2 MBR System KD 40 We have designed a simple yet high-tech membrane filter. The filter is generally available in 3 sizes, as a single, double and triple module (-S,-D,-T) with a capacity (Bio tanks*) from ea m3/h *(at 10 g.ss/1.-20ᵒc). KD 40 MBR System runs using the force of gravity, which means that the installation, operation and installation costs are considerably minimised. Advantages of the KD 40 MBR System: The filter operates via ultra low pressure difference. High flux. Low fauling. The filter takes up little space. The filter has minimum air consumption. The water can be emptied from the filter. Air tubes can be cleaned during operation. The filter can be lifted out of the tank for inspection. The filter does not have any moving/wearing parts. The filter has a long service life. The filter requires minimum cleaning. In case of double and triple modules, it is ensured that the pressure drop in the individual filter inserts is neutralised, which contributes to ensuring a flow that is as effective as possible. Conventional vs. MBR wastewater treatment Typical wastewater treatment process using conventional activated sludge Waste water Typical wastewater treatment process using membrane bioreactor technology Waste water Screening Screening Primary treatment Aeration proces Aeration proces MBR Clarifier A module consists of a frame, tubes and a filter insert, and is available in three sizes single, double and triple. The filter insert is made of PP coated with a PVDF (polyvinylidene fluoride) filtering material. The filter, which is a polymer filter, has a pore size of 0.2 micron! Alfa-Laval Membrane Technology has designed the filter inserts. The filter frame, aerator and discharge pipe (Permate) are made of stainless steel EN The filter is enclosed in PP plates for optimal protection. We will be happy to assist with process design, delivery, assembly and commissioning of your new membrane system. Recommended operation cycle: 10 minutes flow, 2 minutes relaxation Recommended CIP: Once every 2-3 months Recommended pressure difference: mm VS. The mounted cartridge has a flow from m³/day. Max. air requirement, type S: 8 litre per m2/min. Max. air requirement, type D: 6 litre per m2/min. Max. air requirement, type T: 4 litre per m2/min. Fan. Cartridge for 4 x double cartridges.

3 Dimensions chart - see drawing above Single Double Triple A 1620 mm 2640 mm 3660 mm B 1230 mm 1230 mm 1230 mm C 1460 mm 1460 mm 1470 mm D PN 10 - DN 50 PN 10 DN 65 PN 10 DN 80 E 1 ½" G 1 ½" G 1 ½" G F Drain valves Drain valves Drain valve Capacity chart Single Double Triple No. of membrane floors Area of membrane (m2) Volume in filter (l) Weight empty (kg) Weight during operation (kg) Capacity at 20 (m3h) 3,85 7,7 11,5 Air consumption (Nm3h)

4 Two test at a Wastewater Treatment Plant from 14 April to 26 May 2014 The test was conducted on both the discharge water from the final settling time, and on the return sludge from the final settling tank. The test exhibited a slight difference the discharge water flow was reduced. Results from test 1 the discharge water in the final settling tank: Different TMP have been used with the following results: TMP 300= 40L/min.=2m3/h at 10/2 operation/pause. TMP 400= 50L/min.=2.5m3/h at 10/2 operation/pause. TMP 500= 63L/min.=3.1m3/h at 10/2 operation/pause. Cod/Total N/Total P and SSmg/l have been analysed. Comparison before and after the MBR Analyses from Treatment Plant, 2014 from KD MBR test facility MBR COD TN P. total SS Date Location from which the sample is obtained L/min. mg/l mg/l mg/l mg/l Samples analysed by Treatment Plant Test of discharge water from final settling tank 22 April Discharge from Treatment Plant before MBR 68,8 4,76 0,928 26,6 MBR TMP 300 after MBR 35 30,7 2,11 0,167 5,6 23 April Discharge from Treatment Plant before MBR 52,9 3,26 0,742 25,3 MBR TMP 300 after MBR 36 36,1 2,02 0,215 4,4 Results of the test 2 of the discharge water from the final settling tank and the return sludge. As evident from the analysis results, MBR retains approx % more Cod/Total N and Total P. SS is all the way up to approx %. Results of the test of the return sludge from the final settling tank Different TMP have been used with the following flow: TMP 300=40.5 L/min.=2.1 m3/h at 10/2 operation/pause. TMP 400=52.6 L/min.=2.6 m3/h at 10/2 operation/pause. TMP 500=64.5 L/min.=3.2 m3/h at 10/2 operation/pause. Cod/Total N/Total P and SSmg/l have been analysed. Comparison before and after the MBR. Analyses from Treatment Plant, 2014 from KD MBR test facility MBR COD TN P. total SS Date Location from which the sample is obtained L/min. mg/l mg/l mg/l mg/l Runs on process sludge 9 May Analyses of the process sludge Discharge from Treatment Plant before MBR 82 2,54 3,42 27,4 MBR TMP 300 after MBR 40 36,1 2,42 0,182 5,2 12 May Analyses of the process sludge Discharge from Treatment Plant before MBR 45,4 3 0, MBR TMP 300 after MBR 43,5 26,9 1,65 0,179 3,2

5 Return sludge from the final settling tank mg/ss. Conclusion The conclusion is that if one cartridge with 4 double modules is taken, the filtering surface will be 1,232 square metres and it will be possible to achieve a flow of approx m3 per day. Certain reservations must be made for the CIP (Cleaning in place) of the plant. Judging from experience from the test, CIP could be run 1 to 3 times a year with lye and Sodium hypochlorite. This would take from 4 to 8 hours per C.I.P. The power consumption of fan and pump on such a cartridge will be approx. 9 kw per hour. In other words, consumption is as follows: 500m3/day = approx.0.43 kw/m3 purified water. 800m3/day = approx.0.27 kw/m3 purified water. We can offer a test of our MBR plant at your treatment plant. Discharge valve. Discharge water.

6 We can offer a test of our MBR Plant at your Treatment Plant. Adjustment of TMP. MBR module.

7 Membrane Filtration Plant KMC Brande, Denmark. Replacement for Clarifiers. The illustration shows a centrally mounted inlet in a membrane cartridge. The foam formation is reduced by placing inlet pipes centrally and mounting spreading plates. The illustration shows KD s specially designed, pneumatically controlled relaxation valves. The advantage of this permeate control is as follows: It is possible to control the outlet quality and the flow from each membrane. Each membrane can be individually backwashed/ cleaned in place (CIP). This ensures great continuity and reduces the pump and CIP tank capacity. The operator can directly see what is happening!

8 Danish Wastewater Equipment A/S Karetmagervej 25 DK-7100 Vejle Tel: Part of KD Group GB