The discharge of nonacceptable industrial wastes into the system, whether directly or indirectly, is prohibited. Where investigation reveals the presence in the system of nonacceptable industrial wastes emanating from any lot, land, building or premises located within or without the corporate limits, the owner, lessor, tenant or occupant of such lot, land, building or premises shall be required to treat, neutralize or in other ways prepare the noxious substance therein, to the satisfaction of the Director of Public Service and Safety, in order to convert the same into acceptable industrial wastes. "Nonacceptable wastes" means the following described substances, materials, waters or wastes:
(a) Any liquid or vapor having a temperature higher than 150 degrees Fahrenheit (sixty-five degrees Centigrade).
(b) Any water or wastes which contain grease or oil or other substance that will solidify or become discernibly viscous at temperatures between thirty-two degrees to 150 degrees Fahrenheit.
(c) Any water or wastes containing emulsified oil and grease as defined in 925.02
(5) exceeding on analyses an average of one hundred parts per million (833 pounds per million gallons).
(d) Any gasoline, benzene, naphtha, fuel oil, mineral oil or other flammable or explosive liquid, solid or gas.
(e) Any water or wastes that contain more than ten parts per million by weight of the following gases: hydrogen sulphide, sulphur dioxide or nitrous oxide.
(f) Any garbage that has not been properly comminuted or triturated.
(g) Any ashes, cinders, sand, mud, straw, shavings, metal, glass, rags, feathers, tar, plastics, wood, paunch manure, hair and fleshings, entrails, lime slurry, lime residues, beer or distillery slops, chemical residues, paint residues, cannery waste bulk solids 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 sewage works.
(h) Any water or wastes that contain phenols in excess of 0.50 parts per million by weight (500 parts per billion). These limits may be modified by the Director of Public Service and Safety if the aggregate of contributions throughout the metropolitan area of service creates treatment difficulties or produces a plant effluent discharge to the receiving waters, which may be prohibitive.
(i) Any water or wastes, acid or alkaline in reaction, and having corrosive properties capable of causing damage or hazard to structures, equipment and personnel of the sewage works. Free acids and alkalis of such wastes must be neutralized, at all times, within a permissible range of pH, between 5.5 and 9.5.
(j) Any water or wastes containing a toxic or poisonous substance or of high chlorine demand 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 or storm water overflows or the effluent of the sewage treatment plant. Materials such as copper, zinc, chromium and similar toxic substances shall be limited to the following average quantities in the sewage as it arrives at the treatment plant, and at no time shall the hourly concentration at the sewage treatment plant exceed three times the average concentration:
Iron as Fe | 15 parts per million |
Chromium as Cr (Hexavalent) | 5 parts per million |
Copper as Cu | 3 parts per million |
Zinc as Zn | 2 parts per million |
Chlorine Demand | 30 parts per million, |
and with contributions from individual establishments subject to control in volume and concentration by the Director of Public Service and Safety.
(k) Any cyanides, in excess of two parts per million by weight as CN in the wastes from any outlet into the public sewers.
(l) Any water or wastes containing the discharge of strong acid iron pickling wastes or concentrated plating solutions, whether neutralized or not.
(m) Any waters containing suspended solids of such character and quantity that unusual provision, attention or expense is required to handle such materials at the sewage treatment plant.
(n) Any noxious or malodorous gas or substance, which either singly or by interaction with other wastes is capable of creating a public nuisance or hazard to life or of preventing entry into sewers for their maintenance and repair.
(o) Any long-life (over one hundred days) of toxic, radioactive isotopes, without special permit.
The radioactive isotopes I131 and P32 used in hospitals are not prohibited, if properly diluted at the source.
(p) Any water or wastes that for a duration of fifteen minutes have a concentration greater than five times that of normal sewage as measured by suspended solids and B.O.D. and/or which is discharged continuously at a rate exceeding 1,000 gallons per minute. Sampling tests or analyses of industrial wastes shall be made in accordance with the methods approved by the Ohio State Department of Health.
The Director of Public Service and Safety may modify the above limitations, add substances, materials or wastes or otherwise take action to define or control nonacceptable wastes discharged into the system.
(Ord. 9064/81. Passed 6-24-81.)