PL Marshal s Office of Pomorskie Voivodship

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2 Swedish Water and Waste Water Association SE Local / regional authority Other organisation Italic Lead Applicant Associated Organisations Municipality of Höganäs Municipality of Östra Göinge Sustainable Business Hub Municipality of Hörby Region Skåne Polish Biogas Association Swedish University of Agricultural Sciences Municipality of Silale LT PL Marshal s Office of Pomorskie Voivodship The Institute of Environment Protection and Renewable Energy Foundation

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4 Swedish partners Höganäs municipality people, one treatment plant, total staff 8 people Hörby Mittskåne vatten people Two treatment plants, Hörby and Höör Total staff people Östra göinge municipality people, 3 (+ 3) treatment plants, total staff 4 people

5 Challanges for small and medium plants Long term sludge utilzation Recontruction and retrofits New legislation Staff education

6 Executed activities C3/7 tracing of heavy metals C4/8 co digestion, mutual treatment of sludge C3/3 Pilot trials with resource saving waste water treatment C4/10.1 Pre dewatering and biogas production C4/10.1 Pre dewatering and biological treatment C5/1 och 4 Product data sheet, self monitoring manuals, traceability of sludge, sludge utilisation especially in agriculture C3/3 Hygienization of sludge

7 Results? Technical achievement Socio environment/hr Economical

8 Executed activities C3/7 tracing of heavy metals C4/8 co digestion, common treatment of sludge C3/3 Resource saving waste water treatment C4/10.1 Pre dewatering and biogas production C4/10.1 Pre dewatering and biological treatment C5/1 och 4 Product data sheet, self monitoring manuals, traceability of sludge, sludge utilisation C3/3 Hygienization of sludge

9 Tracing of heavy metals Purpose: to find sources of heavy metals to the collection system Primary target: cadmium Following a model that was presented in Euroslam Kosercina in 2012

10 Heavy metal control for sewage sludge

11 Activities and control of the collection system. Downstream Upstream.gives a sludge quality suitable for agricultural use

12 Euroslam QC in five steps 1. Start with phosphorus balance over the treatment plant 2. Check your flows in the collection system 3. Identify what paramethers that need to be improved 4. Start sampling and analyse in collection system 5. Start adjusting influent flow from various sources

13 1000 Phosphorus, P Influent amount Difference in - out In sludge Höganäs Hörby Knislinge Broby Höör Effluent

14 Collection system Industry Households Breaking point Influent WWTP Effluent Drainage water Storm water Sludge Dumblas

15 600 Cadmium, Cd Inkommande g/år 300 Utgående g/år Avskilt till slam g/år 200 Slam analys g/år Höganäs Hörby Broby Knislinge Höör

16 Results metal sampling g P per person and year Cd/P ink Content ug Cd/l Cd/P sludge Water we are looking for Höganäs ,15 29 Hörby ,60 45 Broby ,09 22 Knislinge ,17 20 Höör ,42 70 Cd/P > 30, 0,2 ug/l Cd/P > 60, 0,6 ug/l Cd/P > 30, 0,1 ug/l Cd/P > 30, 0,1 ug/l Cd/P > 60, 0,5 ug/l Target ,07 17

17 WWTP

18 Results Balance P and Cd at WWTP gives a tool to what type of water you should be looking for High variation in Cd content long samling periods You can find good water and bad water Areas with high loads of metals are possible to identify Thanks to Euroslam more samling and more analyses was possible to make. A tool has been developed. Yes, we see a reduction in cadmium possible Yes, this is expensive

19 Pilot trials for resource saving waste water treatment

20 Scope of Work To produce as much biogas as possible To consume as little electricity as possible To have as compact biological process as possible To achieve high removal rates of BOD and phosphorus To retrofit Knislinge WWTP within existing concrete volumes To engage local staff into the procedure To educate interested people in treatment processes

21 Pre precipitation Biological treatment Moving Bed Membranes

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23 Results so far (technical) Pre precipitation with ferric chloride and anionic polymer 90% TSS reduction and 70 % BOD reduction More biogas produced less electricity needed Six month to establish biological treatmen in moving bed. Difficulties to remove suspended solids with filter < 10 mg BOD/l and < 0,3 mg P/l Membrane module more complicated than moving bed Time between wash cycles?

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27 Results so far (socio ecological) High production of biogas Small amount of BOD to decompose biologically No extensional work necessary at Knislinge High degree of envolvement from staff Pilot unit is pedagogic and easy to understand Thanks to Euroslam has this project been easier to build as a demonstration and educational unit

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29 Euroslam Educational Work Shops

30 Co digestion

31 Purpose In Sweden, new sludge legislation is expected Higher demand for environmental status Higher demand for certification and quality assurance programs High interest for biogas production New plants with biogas production, certification capacity, environmental control capacity and long term agreements are sought for but they are complicated, expensive and difficult to find

32 Co-digestion Cost for two Co-digestion one with the same size Investment Ton slam in Kr/ton TS Yearly cost

33 Technical investment = 3

34 By cooperation it will be possible to develop human resources at a more advanced way

35 Result Technical solutions are possible New possibility to build stronger management teams Adressing the market Difficulties for municipalities to cooperate Thanks to Euroslam we have studied technical, economical and organisational issues

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38 Slambehandling Biogas Carbon source Polymer DS 3,5-4,5% 20 dygn 40 m³/h Drainbelt 640 m m 3 Supernatant DS 26 % Centrifug Slam Polymer

39 A high degree of biogas production influences the waste water treatment process

40 Results 25 % more biogas Less floating sludge (after hard learning) Possible to dose supernatant as carbon source Important to return supernatant at the right place and at the right time Sometimes the sludge will be to thick Thanks to Euroslam this installation was possible as an experimental installation (more surveillance)

41 Experiences of Euroslam New thinking, makes creative ideas possible More follow up procedures More cooperation between staff and municipalities

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