Record Display for the EPA National Library Catalog

RECORD NUMBER: 462 OF 892

OLS Field Name OLS Field Data
Main Title Mercury recovery from contaminated waste water and sludges /
Author Perry, Richard.
Publisher National Environmental Research Center : For sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1974
Report Number EPA-660/2-74-086; EPA-12040-HDU; PA-ROAP-21AZX-022
Stock Number PB-238 600
OCLC Number 01308008
Subjects Mercury. ; Water--Purification. ; Sewage sludge.
Additional Subjects Sludge disposal ; Mercury(Metal) ; Industrial waste treatment ; Water pollution control ; Mercury inorganic compounds ; Inorganic sulfides ; Precipitation(Chemistry) ; Pilot plants ; Brines ; Performance evaluation ; Chloralkali plants ; Mercury sulfides
Internet Access
Description Access URL
http://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101RIQP.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJAD  EPA 660/2-74-086 Region 3 Library/Philadelphia, PA 08/16/1996
EJBD ARCHIVE EPA 660-2-74-086 Headquarters Library/Washington,DC 06/11/2012
EJBD  EPA 660-2-74-086 Headquarters Library/Washington,DC 12/29/2014
EKAM  TD172.E46 1974 no.86 Region 4 Library/Atlanta,GA 03/14/1997
ELBD  EPA 660-2-74-086 AWBERC Library/Cincinnati,OH 03/22/2017
ELDD  EPA-660/2-74-086 NHEERL/MED Library/Duluth,MN 12/01/2000
ESBD  EPA-660-2-74-086 NHEERL/WED Library/Corvallis,OR 09/19/2017
NTIS  PB-238 600 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation ix, 119 pages : illustrations ; 27 cm.
Abstract
A plant was designed, built and operated to remove Hg from waste water and sludge produced by a mercurycell chlor-alkali plant. Mercury content of the waste water ranged from 300 - 18,000 ppb mercury while mercury content of the brine sludge ranged from 150 to 1500 ppm Hg. Other sludges processed include sludges from the waterway near our plant outfall with a Hg content of 10 - 25 ppm Hg. From a variety of removal techniques tried in the lab, the methods selected were sulfide precipitation for the water treatment and high temperature roasting for the sludge treatment. The sulfide precipitation consists of collecting the various water streams, adjusting the pH from 5 - 8 with spent sulfuric acid, settling the large solid particles in a surge tank, adding sodium sulfide to a 1-3 ppm excess, adding diatomaceous earth at the rate of 0.07 gpl in an R.P. Adams pressure filter. The effluent Hg levels range from 10-125 ppb with an average of 50 ppb Hg for an 87-99% removal, averaging 96.8%. The sludge system contains a collection system, 3.7 m diameter thickener, 1.8 m diameter rotary vacuum filter, 1.37 m i.d. multiple hearth furnace, and 3 stainless steel condensers 21 sq m each. Processing rate for the sludge is 140-320 kg/hr, dry basis. Capital costs were $364,500 and operating costs were $32 per m ton of dry sludge treated.
Notes
Prepared for National Environmental Research Center, Office of Research and Development, U.S. Environmental Protection Agency under project 12040 HDU, program element 1BB037, ROAP/TASK no. 21 AZX/022. Includes bibliographical references (pages 76-80).