Lindley filters
The Lindley filter ( Polish : Filtry Lindleya ) are water filters , which in the years 1883-1886 in Warsaw were built and located between the streets ul Koszykowa. , Ul. Ludwika Krzywickiego , ul Filtrowa. And ul Raszynska. Are. Williama Lindleya street leads directly to the entrance to the filters, which is located at 81 Koszykowa street .
They are part of the Warsaw water system, which was designed and built by the British engineer William Lindley . The construction was completed by William Heerlein Lindley , the son of William Lindley.
Socrates Starynkiewicz (1820–1902), Russian general and President of Warsaw (1875–1892) awarded the building contract in his first year in office. In 1881 Starynkiewicz was approved the project by Saint Petersburg . In that year the construction of the first Warsaw water supply and sewer network began; Construction was completed in 1886. For the first time, the residents of Warsaw received water from the filters on July 3, 1886, which at the time consisted of a group of slow filters, a fresh water tank, a pump hall and a water tower .
Lindley's plans also included the construction of a river pumping station on the left bank of the Vistula and a filter station with systems for drinking water treatment.
The most modern technical developments of the time were used during construction. The focus was on working out the details. In the construction of all objects, even the smallest, materials of the highest quality were used, which were subjected to a multi-level control. The main building materials were specially fired, moisture-proof bricks and white glazed bricks. Granite and sandstone blocks were also used on a large scale.
Water pipe system
The Warsaw water supply system included the filter station - the Lindley filter - and the river pumping station of the Central Water Supply Authority, where water was taken from the Vistula and pumped into lines to the filter station.
The filter station systems were covered with earth. Today there are four raw water clarifiers, six groups of slow filters and nine fresh water reservoirs. The seventh slow filter group was replaced by an ozonation system and activated carbon filters.
The Warsaw water system in Lindley's time
- Oberstadt - water supply using a water tower located on the site of the filter station
- Lower town, i.e. the Powiśle district in today's Śródmieście district and the Praga district - water supply directly from the slow filters
Water treatment process
The water from the river pumping station was fed into the slow filters, some of which served the function of closed cisterns .
The pre-filtered water was fed into the fresh water reservoir, and then into the pump hall, from where it was pumped into the water tower, where the upper town's water supply system began.
A few years after the filters were put into operation, further closed cisterns upstream of the slow filters were required because studies had shown the poor quality of the water. Therefore, the area of the station was expanded from 1890 and the construction of further cisterns began.
The increasing demand for water in the years 1930–1933 led to the addition of a quick filter system. After it was put into operation, the water was fed into the equalization cisterns (the formerly closed cisterns), then into the quick filters, and then into the slow filters.
In 1931, the water started to be chlorinated after passing through the slow filter.
Gruba Kaśka
Since 1964, the Praga district has been supplied by a well called “ Gruba Kaśka ” (Thick Käthchen), which draws water from the Vistula under the river floor. The water is filtered through thick layers of sand under the Vistula floor.
Web links
- Walter Mevius and Richard Żelichowski, Warschaus Wasserversorgung , pp. 40-47 , in Technical Reports HWW, Volume 19, 2002, No. 2 (accessed on March 26, 2013)
Footnotes
- ↑ When the filters were built, the street was still called ul. Sucha.
Coordinates: 52 ° 13 ′ 13 ″ N , 20 ° 59 ′ 42 ″ E