Whenever industrial waste, such as waste from a meat packing
plant, lead reclaiming plant, laundry, soap factory or from any other
business or industrial establishment, is produced in such quantities
as will injuriously affect the treatment of sewage in the city sewage
treatment plant, the receiving sanitary or storm sewer or which may
produce conditions dangerous or prejudicial to life or health, such
wastes shall receive pretreatment satisfactory to the city engineer
before discharge to the city sanitary or storm sewer.
(1965 Code, sec. 15-207)
When preliminary treatment facilities are provided for any water
or wastes, they shall be maintained continuously in satisfactory and
effective operation, by the owner at his expense.
(1965 Code, sec. 15-208)
Except as provided in this section, no person shall discharge
or cause to be discharged any of the following described waters or
wastes to any sanitary sewer:
(1) Any
liquid or vapor having a temperature higher than 150 degrees F.
(2) Any
water or waste which may contain more than (100) parts per million
by weight, of fat, oil or grease.
(3) Any
gasoline, benzene, naphtha, fuel oil, or other flammable or explosive
liquid, solid or gas.
(4) Any
garbage that has not been properly shredded in a machine designed
for this purpose.
(5) Any
ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers,
tar, plastics, wood, paunch manure, or any other solid or viscous
substance capable of causing obstruction to the flow in sewers or
other interference with the proper operation of the sewerage works.
(6) Any
waters or wastes having a pH lower than 5.5 or higher than 9.5, or
having any other corrosive property capable of causing damage or hazard
to structures, equipment, and personnel of the sewerage works.
(7) Any
waters or wastes containing more than 5.0 parts per million by weight
of chromium or 2.0 parts per million by weight of cyanides or 12.0
parts per million of phenols or 5.0 parts per million of iron or 1.0
parts per million by weight of copper.
(8) Any
waters or wastes containing any quantity of formaldehyde or carbide
wastes.
(9) Any
waters or wastes containing a toxic or poisonous substance in sufficient
quantity to injure or interfere with any sewage treatment process,
constitute a hazard to humans or animals, or create any hazard in
the receiving waters of the sewage treatment plant.
(10) Any noxious or malodorous gas or substance capable of creating a
public nuisance.
(11) The admission into the sanitary sewers of any waters or wastes having
(a) a 5-day biochemical oxygen demand greater than 300 parts per million
by weight or (b) containing more than 400 parts per million by weight
of suspended solids, or (c) containing any quantity of substance having
the characteristics described in this section, or (d) having an average
daily flow greater than 2% of the average daily sewage flow of the
city, shall be subject to the review and approval of the city engineer.
When necessary in the opinion of the city engineer, the owner shall
provide, at his expense such preliminary treatment as may be necessary
to, (a) reduce the biochemical oxygen demand to 300 parts per million
and the suspended solids to 400 parts per million by weight, or (b)
reduce objectionable characteristics or constituents to within the
maximum limits provided for in this section, or (c) control the quantities
and rates of discharge of such waters or wastes. Plans, specifications,
and any other pertinent information relating to proposed preliminary
treatment facilities shall be submitted for the approval of the city
engineer, and no construction of such facilities shall be commenced
until approval is obtained in writing.
(1965 Code, sec. 15-209)
Wastes, scrubbing or wash water from industrial processes shall
not be discharged into storm sewer except by special written permission
from the city engineer.
(1965 Code, sec. 15-210)
Drains receiving acid waste shall be constructed of an acid
resisting material. Such drains located outside of a building shall
be constructed of vitrified clay or earthenware pipe or other approved
acid resisting material. Joints shall be constructed by calking with
asbestos rope wicking and by pouring a heated sulphur and carbon compound
or a heated bituminous compound in such manner as to secure tight
joints. In no case shall corrosive waste be discharged into a drain,
sanitary sewer, storm sewer, or soil or, waste pipe without being
first diluted or neutralized in such manner as to render said wastes
noncorrosive. These wastes shall be treated by passing through a properly
trapped dilution or neutralizing catch basin which shall function
automatically. Plans and specifications of said neutralizing basin
of any other proposed treatment method shall be furnished by the owner
or occupant to the city engineer for approval.
(1965 Code, sec. 15-211)