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Case Study Summary – Łowicz, Poland (52)

Wastewater - Sludge Reduction and Cost Savings

Industry: Lowiczu City Government, Public Works
Application: Improving the efficiency of urban waste water treatment facility
Customer: Zaklad Uslug Komunalnych Urzędu Miasta
Where: Lowiczu, Poland
When: Since 2006
Products: Customized solution using SCD Bio Klean™
SCD Licensee: ProBiotics Polska
Magdalena Górska
Bratuszyn 21 62 - 720 Brudzew
Tel. / fax : +48 (0) 632 798 725
www.probiotics.pl
E-mail: biuro@em-world.pl

Goal
The goals at the Waste Water Treatment Facility in Lowicz included:

  1. Suppress application of coagulant agent (iron III sulphate)
  2. Improve sludge composting time
  3. Reduce sludge production
  4. Improve outflow paramenters (see Table I)
  5. Financial savings due to increased operational efficiencies

Table I:Mean wastewater characteristics (2005) prior to SCD Probiotics Applications

Daily inflow
[m3/day]
Production [m3/day]
Inflow [mg/dm3]
Screenings
Sand
Sludge
TSS
COD
BOD
P
N
8653
80.5
175
9006
394
1315
628
5.37
50.6
Outflow [mg/dm3]
TSS
COD
BOD
P
N
52
76.6
13.2
1.18
8.56

Methology
SCD Bio Klean™ is added to sludge separated from the system. A fraction of ammended sludge is recirculated to the general system improving the characteristic of the outflow water.

Results
All goals were achieved.

Significant improvement in all outflow parameters (except Nitrogen content) occurred after the SCD Probiotics applications, as evidenced in Table II below.

In addition, the following benefits were achieved as a result of the SCD Probiotics application, positively impacting the operational and financial performance of the waste water treatment facility.

  1. Elimination of PIX application (a coagulation agent).
  2. A 25% reduction in overall sludge production.
  3. Cost reductions:
       – 200.000 PLN from disposal cost reduction per annum
       – 30.000 PLN savings on enviromental fees caused by decreased water contamination per annum

Table II - Mean wastewater characteristics (2008) after SCD Probiotics Technology Application

Daily inflow
[m3/day]
Production [m3/day]
Inflow [mg/dm3]
Screenings
Sand
Sludge
TSS
COD
BOD
P
N
9625
65
133
7955.5
219
822
341
6.82
44.2
Outflow [mg/dm3]
TSS
COD
BOD
P
N
15
64.5
7.37
0.69
9.55

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