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Water Research Commission publication

Water Research CommissionRef: https://www.wrc.org.za/water-sa-issue/15-no-2-april-1989/

Official source

Source domain: wrc.org.za

Collected on 17 September 2026

Always confirm details on the official source before acting.

What this means

This is the Water SA Vol. 15 No. 2, April 1989 issue page on the Water Research Commission website. It lists 8 articles published on April 1, 1989 and provides View PDF and Download links for each article. The articles cover topics such as extreme value distribution, activated sludge, evaporation, water use in Pretoria, and schistosomiasis risk in dams.

What this document offers

Read out of this document by Govermate's AI, in its own words. Each one quotes the line it came from — confirm on the official source before acting.

journal article PDFOngoing

Enhanced polyphosphate organism cultures in activated sludge systems. Part II: Experimental behaviour

A PDF of a Water SA article by Wentzel MC, Ekama GA, Loewenthal RE, Dold PL and Marais GvR, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Enhanced polyphosphate organism cultures in activated sludge systems. Part II: Experimental behaviour Wentzel MC, Ekama GA, Loewenthal RE, Dold PL, Marais GvR View PDF
journal article PDFOngoing

Ozonation for non-filamentous bulking control in an activated sludge plant treating fuel synthesis waste water

A PDF of a Water SA article by van Leeuwen J, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Ozonation for non-filamentous bulking control in an activated sludge plant treating fuel synthesis waste water van Leeuwen J View PDF
journal article PDFOngoing

A review of the schistosomiasis risk in South African dams

A PDF of a Water SA article by Pretorius SJ, Joubert PH and De Kock KN, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
A review of the schistosomiasis risk in South African dams Pretorius SJ, Joubert PH, De Kock KN View PDF
journal article PDFOngoing

Metabolic regulation of B-hydroxybutyrate dehydrogenase in Acinetobacter calcoaceticus var. lwoffi

A PDF of a Water SA article by Lötter LH and Dubery IA, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Metabolic regulation of B-hydroxybutyrate dehydrogenase in Acinetobacter calcoaceticus var. lwoffi Lötter LH, Dubery IA View PDF
journal article PDFOngoing

Atmospheric evaporative demand and evaporation coefficient concepts

A PDF of a Water SA article by de Jager JM and Van Zyl WH, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Atmospheric evaporative demand and evaporation coefficient concepts de Jager JM, Van Zyl WH View PDF
journal article PDFOngoing

Parameter estimation for the general extreme value distribution

A PDF of a Water SA article by Phien HN and Emma F T-S, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Parameter estimation for the general extreme value distribution Phien HN, Emma F T-S View PDF
journal article PDFOngoing

Enhanced polyphosphate organism cultures in activated sludge systems. Part III: Kinetic model

A PDF of a Water SA article by Wentzel MC, Dold PL, Ekama GA and Marais GvR, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Enhanced polyphosphate organism cultures in activated sludge systems. Part III: Kinetic model Wentzel MC, Dold PL, Ekama GA, Marais GvR View PDF
journal article PDFOngoing

Overall effect on annual costs of a reduction in water use with separate metering of flats in Pretoria

A PDF of a Water SA article by Kriel JP, published in Vol. 15 No. 2, April 1989. It can be viewed or downloaded from the issue page.

Who it is for
readers and researchers interested in water science
How to act on it
Go to the Water SA Vol. 15 No. 2, April 1989 page and select 'View PDF' or 'Download' next to the article title.
Show the line this came from
Overall effect on annual costs of a reduction in water use with separate metering of flats in Pretoria Kriel JP View PDF

Facts

Places

City of Tshwane, Gauteng

Reference

https://www.wrc.org.za/water-sa-issue/15-no-2-april-1989/

Key Takeaways

  • Water SA Vol. 15 No. 2, April 1989
  • April 1, 1989
  • 8 articles
  • Water Research Commission
  • View PDF
  • Download
  • Pretoria
  • Tshwane
  • 1609 Michael Thackeray Street
  • +27 12 761 9300
  • Water Research Commission
  • Water SA
  • Phien HN
  • Emma F T-S
  • Lötter LH
  • Dubery IA
  • Wentzel MC
  • Ekama GA
  • Loewenthal RE
  • Dold PL
  • Marais GvR
  • de Jager JM
  • Van Zyl WH
  • Kriel JP
  • van Leeuwen J
  • Pretorius SJ
  • Joubert PH
  • De Kock KN