91    PILOT TEST FOR LATEX PAINT WASTEWATER AT A
BIO-DISC POTW
Jack R. Meyers, County Sanitary Engineer
George Tigges, Plant Superintendent
Erie County Sanitary Engineering Dept.
Huron, Ohio 44839
Gregory L. Binder, Project Manager
Metcalf & Eddy, Inc.
Columbus, Ohio 43231
Jerome H. Jacobs, Project Manager
Richard Prober, Senior Engineer
Metcalf & Eddy, Inc.
Cleveland, Ohio 44122
The Erie County Sanitary Engineering Department with assistance from Metcalf & Eddy, Inc.,
conducted a pilot study concerning the treatability of industrial wastewater from a potential significant industrial user at the Huron Basin Wastewater Treatment Plant. This wastewater was known to
have a high concentration of organics. It was not known whether industrial wastewater constituents
would interfere with the treatment process at the Huron Basin W.W.T.P. or pass through it,
untreated. Another objective for the pilot test program was to determine an equitable basis for the
recovery of additional operations and maintenance costs incurred in treating the industrial wastewater
due to increased sludge production, chemical usage or power consumption.
INTRODUCTION
Table I summarizes the industrial wastewater characteristics, based on samples taken during the
pilot study. The waste strength varied somewhat, but the COD and CBOD concentrations were
generally correlated, as can be seen in the table.
The Huron Basin Wastewater Treatment Plant was built in 1984 to replace a 1939 vintage plant that
was located adjacent to the downtown area of Huron. The new facility has a service area that includes
two-thirds of the City of Huron and has a long range projection of including the Village of Berlin
Heights. The other area of Huron and parts of Huron Township are serviced by the Sawmill Creek
W.W.T.P. Both facilities are owned and operated by Erie County. The Huron Basin Facility received
its initial flow May 1, 1985.
Raw sewage flows into the plant through a 16" force main. It then passes through a manually raked
bar screen, comminutor, and aerated grit tank. The flow then goes through primary settling, five stage
Table I.   Average Glidden Wastewater Characteristics
Week of
22 Oct
29 Oct
5 Nov
12 Nov
19 Nov
26 Nov
3 Dec
Overall
Average
COD (mg/L)
CBOD (mg/L)
NH3 (mg/L)
P (mg/L)
TSS (mg/L)
COD/CBOD ratio
14215
5990
23
3.7
n/a
2.4
18260
5680
18
4.5
n/a
3.2
16340
6007
13
3.1
n/a
2.7
19975
6950
18
4.2
n/a
2.9
17567
7240
16
4.4
n/a
2.4
22980
7820
81
6.7
1040
2.9
15920
6657
26
5.9
1250
2.4
17894
6620
28
4.6
1145
2.7
47th Purdue Industrial Waste Conference Proceedings, 1992 Lewis Publishers, Inc., Chelsea, Michigan 48118.
Printed in U.S.A.