Hostětín village WWTP

20 years of the combined constructed

wetland – stabilization pond project

Miloš Rozkošný

T.G.Masaryk Water Research Institute, p.r.i.

http://www.vuv.cz/en/home

Natural technologies in the Czech Republic

32

109

18 18

64

45

0

20

40

60

80

100

120

pouze mechanická aktivace biodisk biofiltr kořenová ČOV,

zemní filtr,

biologická nádrž

nespecifikovaná

mechanicko-

biologická

WWTP < 500 p.e. (2008) – 286 plants, about 25 % natural technologies

Mlejnská, Rozkošný a kol., 2009

Natural technologies – survey in Danube River Basin

Biofilters

Natural

technologies

Activated

sludge systemsBiodiscs

Mechanical

treatment

Non-specified

Hostětín – project background

Hostětín – project background

Hostětín village – about 200 inhabitants, Zlínský kraj Region

1960 – water reservoir Bojkovice – main purpose – dringing water supply

1966 – prohibition of construction in the village (in the water reservoir

catchment)

After 1989 – social & state administration changes

1990 – sewerage construction in the village

1993 – first survey and study of wastewater treatment – proposal of WWTP

technology – O&M cost analysis, chosen type – combined WWTP (mechanical

pretreatment, constructed wetland, final purification – waste stabilization pond)

1996 – implementation of the project

2004 – second survey, workshop

2006, 2010, 2012-2015 – monitoring programmes, upgrade of the treatment

system

Hostětín - WWTP

Hostětín - WWTP

Treatment effciency

Profile Hydraulic loading BOD5 COD TSS N-NH4+ TP

m3/ (m2 of CW per day) g / (m2 of CW per day)

Designed

Inflow 0,04 5,7 --- --- --- ---

Monitored and calculated

Inflow 0,18 5,7 13,0 0,5-6,5 2,9 0,24

Treatment

effciency

Profil Inflow CW outflow Final outflow

Par. BOD5

min. 1 1,90 0,20

avg. 64,9 16,69 13,21

max. 195 68,00 28

Par. COD

min. 17 8 12

avg. 142,8 42,27 44,54

max. 588 78 109

Par. TSS

min. 8 1 8

avg. 41,9 9,82 27,77

max. 123 16 64

Par. N-NH4+

min. 2,79 1,27 0,09

avg. 23,25 18,56 9,15

max. 44,00 36,64 25,21

Par. TP

min. 0,57 0,23 0,24

avg. 2,84 3,08 1,74

max. 5,81 5,16 3,94

Final purification by waste stabilization pond

N-NH4 TP

mg/l mg/l mg/l mg/l

KP OD SN OD KP OD SN OD

VII/03 25,8 0,1 4,2 1,2

X/03 28,8 16,0 4,7 2,9

XII/03 27,5 18,5 5,2 3,9

IV/04 1,3 1,2 0,2 0,2

V/04 8,6 5,0 2,4 0,8

VIII/04 21,7 6,8 4,0 2,2

IX/04 36,6 8,1 4,4 2,3

X/04 30,7 25,2 4,6 3,2

XII/04 8,2 5,9 1,7 1,2

II/05 10,9 8,5 1,7 1,6

III/05 4,1 3,5 0,7 0,4

AVG 18,6 8,9 3,1 1,8

N-NH4 TN TP

mg/l mg/l mg/l mg/l mg/l mg/l

KP SN KP SN KP SN

VI/10 1,5 0,1 2,0 1,1 0,2 0,2

VII/10 5,1 7,5 5,6 7,4 0,7 1,0

X/10 4,2 2,4 4,7 3,2 1,7 0,3

XI/10 9,1 5,6 9,1 6,4 1,5 1,4

AVG 5,0 3,9 5,4 4,5 1,0 0,7

Biology of WSP

ind/ml

Bacillario-

phyceae

Cyano-

phyceae

Crypto-

phyceae

Eugleno-

phyceae

Chlorophyta-

kokální

Chlorophyta-

monadoidní

Tvzd

(°C)

Tv

(°C)

O2

(mg/l)

pH

8/2009 0 40 1000 400 0 0 21 20,5 1,1 8,0

9/2009 0 0 0 1800 0 0 18 16,2 2,4 8,1

10/2009 0 200 0 400 0 0 3 8,0 3,6 7,8

11/2009 4 8 0 200 0 0 12 8,6 4,8 7,8

12/2009 0 40 0 1240 0 0 9 7,9 3,5 8,0

2/2010 0 120 0 700 20 0 1 1,8 0,8 7,9

3/2010 0 400 0 28000 245 0 18 12,0 13,5 8,2

4/2010 0 300 0 14200 563 1200 16 12,9 2,7 8,0

5/2010 36 12 0 1000 423 2000 9 11,0 1,8 7,7

6/2010 4 0 0 20200 12 32800 24 21,2 14,8 8,0

7/2010 0 28 0 276 320000 4 29 23,8 0,5 7,8

8/2010 0 500 0 300 100000 8600 13 14,4 3,2 7,6

9/2010 40 28 0 460 100000 40 15 12,0 5,8 7,8

10/2010 0 12 0 9404 56 6100 7 7,6 5,2 7,8

11/2010 0 4 0 19100 125 2200 10 9,9 5,5 7,9

12/2010 4 4 0 912 74 0 2 3,7 1,2 7,8

Investment

O & M cost

Target beneficiaritiesVillage

• better water quality

• village development

• working positions

NATURE :)

Research, water management sector

Education

primary & secondary schools, uni students, participants of meetings and

workshops (not only water management), public, officers, mayors of small

settlements

Turism

part of village ecological projects and NGO Veronica activities in the region

Lessons learned & recommendations

1. Experiences with the technology in long-term course

2. Operation and maintentace

3. Urban and landscape planning, process of implementation

4. Recommendations for the technology development and application

Good example of the decision making process and implementation,

But only few similar projects in the country (few disciples)

T. G. Masaryk Water Research Institute, p.r.i. | Podbabská 30/2582, 160 00 Prague 6, Czech Republic

| +420 220 197 111 | info@vuv.cz, www.vuv.cz

Brno Branch | Mojmírovo náměstí 16, 612 00 Brno, Czech Republic | +420 541 126 311 | info_brno@vuv.cz

Ostrava Branch | Macharova 5, 702 00 Ostrava, Czech Republic | +420 596 134 181 | info_ostrava@vuv.cz