KTDA SEMINAR WATER TREATMENT PRESENTATION. John Waema

Size: px
Start display at page:

Download "KTDA SEMINAR WATER TREATMENT PRESENTATION. John Waema"

Transcription

1 KTDA SEMINAR WATER TREATMENT PRESENTATION John Waema

2 INTRODUCTION Filtration Systems Packaged Plants Ultrafiltration Plants Dosing Systems Reverse Osmosis Plants Mobile Water Treatment Plants

3 Global water challenges Availability Growing population and industry Climate change and draught Quality Environmental Energy Deteriorating water quality Increased industrial pollution Stricter regulation on discharge/withdrawal Water reuse incentives and mandates Energy to increase ~30% by 2030 Demand for water to increase ~40% Growing water scarcity and impairment

4 COMMON CONTAMINANTS Surface Water - bacteria, colour, sediment, odor. Shallow Well water - bacteria, nitrates, sewage infiltration. Borehole/Ground Water. Iron & Manganese turbidity and colour Fluoride weak bones, discoloured teeth Calcium Carbonate Hardness deposition of scale on boilers, cooling towers etc. Sea Water Saline (High in Sodium and Chlorides)

5 CROP NUTS LABORATORY

6 WATER ANALYSIS REPORT

7 FILTRATION

8

9 DAYLIFF CXD Used for chemical media Such as DMI-65, Activated Alumina Activated Carbon FILTRATION

10 PENTAIR PXD INDUSTRIAL FILTERS Automated operation with Pentair Electric Control. Deep Bed configuration for specialized water treatment media applications. Structural Fiberglass pressure rated at 10 bar. High efficiency internal flow arrangement for even filtration and effective backwash.

11 Activated Carbon Reduces: color and odor Organic chemicals Aqualite removes heavy metals and can filter down to 20mic Activated Alumina removal of Fluoride content by adsorption SPECIAL RESINS

12 SURFACE WATER TREATMENT PLANTS a) Dayliff WG Plant Integral dosing pump & tank Fibreglass sedimentation tank Dayliff CX 500 sand filter

13 SURFACE WATER TREATMENT PLANTS b) Dayliff WP Plant Control panel WP sedimentation basin Dosing pump & tank Dayliff CX 500 filter

14 ADVANCED OXIDATION FILTRATION MEDIA DMI-65 Designed to remove iron and manganese It acts as an oxidation catalyst with immediate oxidation and filtration of the insoluble precipitates derived from this oxidation reaction. The unique microporous structure of DMI-65 efficiently removes dissolved iron to the almost undetectable levels as low as 0.001ppm and manganese to 0.001ppm.

15 ULTRAFILTRATION

16 ULTRAFILTRATION

17

18

19 SCHEMATIC LAYOUT

20 ADVANTAGES OF ULTRAFILTRATION

21 SCHEMATIC LAYOUT OF UF

22 PENTAIR LINE GUARD Operating Conditions - Max. Inlet Pressure: 4 Bar; Water Temp Range: +10C C; TSS: <0.1mg/l; Turbidity: <0.3 NTU Membrane Area: 4.5m2 Flow Rate: Initial flow rated at 60l/min (3.6m3/hr); Compact unit 2No. modules mounted on a panel with the control unit installed in between. Produces pure water and removes >99.9% of all of bacteria, viruses, cysts as well as sediment and turbidity; No pre-treatment or other chemical processes required

23 AQUASENTRY MANUAL UF Removes particles, bacteria, cysts etc Uses hollow fibre membrane Based on simple gravity principle Standalone or in parallel connection Low cost, no power, no chemicals 10,000litres per day

24 MANUAL UF INSTALLATION

25 APPLICATIONS OF ULTRAFILTRATION Surface Water Treatment Post treatment of Waste Water /Effluent water RO Pretreatment

26 DOSING SYSTEMS

27 ELECTRICAL DOSING Seko AMM/AML Standard unit Dosing Range 5-lit/hr Grundfos Alldos Higher Flow Rates Grundfos Quality & Reliability

28 Ngethu Treatment Works

29 PROPORTIONAL DOSING Dosatron Range Proportional Dosers Powered Only by Water Pressure Dosing rate proportional to flow rate Sizing by flow rate on line and percentage of the dosage required

30 KLORMAN INLINE DISINFECTION 500,000lt per cartridge at 1ppm with no chlorine demand

31 BUCCANEER IN LINE DISINFECTION One charge of 6 refill cartridges will dose 8,000 m3 to 1 ppm free chlorine

32 REVERSE OSMOSIS

33 WHY USE PRE-TREATMENT? RO is designed to filter out dissolved solids not suspended solids. Pre-treating the feed water will increase the life and recovery of the membranes. In the long run you will SAVE money if you pre-treat. GOOD PRE-TREATMENT = GOOD RO PERFORMANCE

34 WHY PRETREAT THE WATER Scaling Precipitation of solutes onto membrane surface Occurs at tail end Heavy metals, H2S, Silica, Hardness etc Fouling Growth of bacteria on membrane surface forming slime layer Occurs throughout membrane COD & BOD Clogging Deposits of silt in membrane Throughout membrane but most common at front. Metal Oxides, TSS (colloids, clays, silts, etc.) Membrane Degradation Chlorine damages RO membranes

35

36 MGS E4-ULTRA CONTAINERIZED UNIT D&S Reaching the Next Level

37 THANK YOU