摘要:

A problem with trihalomethane (THM) levels in its finished water required the Crawford Country Rural Water District Number 6 (CCRWD), Parsons, Kansas, to investigate methods of oxidizing THM precursors. Testing indicated that chlorine dioxide is a viable alternative for control of THMs at CCRWD. Furthermore, chlorine dioxide satisfactorily addressed the plant's problems with iron and manganese and with taste and odor, while allowing a very significant savings on activated carbon and potassium permanganate.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1988.tb00490.x

出版商:Wiley    

年代:1988

数据来源: WILEY

摘要:

Winners of the 1988 Opflow Gimmicks and Gadgets Contest are presented. First prize went to the inventor of a meter hook to facilitate cleaning meter boxes; the second prize winner devised a water‐injected probing rod for use in probing water and sewer lines in dry climates where the ground can become very hard; a system of color coding valve lids to identify valves that are closed for maintenance merited third prize.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1988.tb00487.x

出版商:Wiley    

年代:1988

数据来源: WILEY

摘要:

Streaming current monitors (SCM) are used to control coagulation by determining and maintaining proper coagulant dosages. By sending the streaming current signal to a microprocessor‐based process controller and then to the coagulant feeder, coagulant dosages can be automatically adjusted and maintained. The use of streaming current monitors for water treatment is described and operational considerations are addressed.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1988.tb00488.x

出版商:Wiley    

年代:1988

数据来源: WILEY

摘要:

After experiencing problems with one of its pumps, a Colorado water company discovered that the well side had caved in and deposited debris on top of the pump. After removing the pump, a damaged plastic casing was replaced with a stainless steel screen and steel.

ISSN:0149-8029    

DOI:10.1002/j.1551-8701.1988.tb00489.x

出版商:Wiley    

年代:1988

数据来源: WILEY