Wyoming Administrative Code › Agency 020 - Environmental Quality, Dept. of › Sub-Agency 0011 - Water Quality › Chapter 12 - DESIGN AND CONSTRUCTION STANDARDS FOR PUBLIC WATER SUPPLIES › Section 12-12 - Treatment

Current through July 13, 2024
(a) 2018 TSS, parts
				4.2.1, 4.2.1(b)-(c), clarification, presedimentation; 4.2.2-4.2.2(c),
				clarification, coagulation; 4.2.4, 4.2.4(b)-4.2.4(d)(3), coagulation,
				sedimentation; 4.3.1.1, filtration, rapid rate gravity filters, pretreatment;
				4.3.1.4-4.3.1.4(o), filtration, rapid rate gravity filters, structural details
				and hydraulics; 4.3.1.6-4.3.1.6(d)(2)(d), filtration, rapid rate gravity
				filters, filter material; 4.3.1.6(d)(4), filtration, rapid rate gravity
				filters, filter material, granular activated carbon (GAC);
				4.3.1.6(e)-4.3.1.6(e)(1)(b), filtration, rapid rate gravity filters, filter
				material, support media; 4.3.3.6-4.3.3.6(b), filtration, diatomaceous earth
				filtration, pre-coat; 4.3.3.7-4.3.3.7(c), filtration, diatomaceous earth
				filtration, body feed; 4.3.3.8-4.3.3.8(e), filtration, diatomaceous earth
				filtration, filtration; 4.3.3.10- 4.3.3.10(a)(4), filtration, diatomaceous
				earth filtration, appurtenances; 4.3.4.2, filtration, slow sand filters,
				number; 4.3.4.4, filtration, slow sand filters, rates of filtration; 4.3.4.5,
				filtration, slow sand filters, underdrains; 4.3.4.6-4.3.4.6(e), filtration,
				slow sand filters, filter material; 4.3.4.7, filtration, slow sand filters,
				filter gravel; 4.3.4.8, filtration, slow sand filters, depth of water on filter
				beds; 4.3.4.9, 4.3.4.9(b), (e) and (f), filtration, slow sand filters, control
				appurtenances; 4.4.1- 4.4.1(b), disinfection, contact time, CT, and point(s) of
				application; 4.4.3- 4.4.3(d) and (f), disinfection, testing equipment; 4.4.4.3,
				disinfection, chlorine, automatic switch-over; 4.4.4.7, disinfection, chlorine,
				cross-connection protection; 4.4.4.8, disinfection, chlorine, pipe material;
				4.4.5, disinfection, chloramines; 4.4.6.1, disinfection, ozone, design
				considerations; 4.4.6.2- 4.4.6.2(e), disinfection, ozone, feed gas preparation;
				4.4.6.3- 4.4.6.3(d), disinfection, ozone, ozone generator; 4.4.6.4-4.4.6.4(b),
				disinfection, ozone, ozone contactors; 4.4.6.5-4.4.6.5(g), disinfection, ozone,
				ozone destruction unit; 4.4.6.6, disinfection, ozone, piping materials;
				4.4.6.7-4.4.6.7(c), disinfection, ozone, joints and connections;
				4.4.6.8-4.4.6.8(h), disinfection, ozone, instrumentation; 4.4.6.9-4.4.6.9(h),
				disinfection, ozone, alarms; 4.4.6.11-4.4.6.11(c), disinfection, ozone,
				construction considerations; 4.5.1, softening, lime or lime-soda process;
				4.5.1.1, softening, lime or lime-soda process, hydraulics; 4.5.1.3, softening,
				lime or lime-soda process, chemical feed point; 4.5.1.4, softening, lime or
				lime-soda process, rapid mix; 4.5.1.5, softening, lime or lime-soda process,
				stabilization; 4.5.1.6-4.5.1.6(b), softening, lime or lime-soda process, sludge
				collection; 4.5.1.7, softening, lime or lime-soda process, sludge disposal;
				4.5.1.8, softening, lime or lime-soda process, disinfection; 4.5.1.9,
				softening, lime or lime-soda process, plant start-up; 4.5.2.1, softening,
				cation exchange process, pre-treatment requirements; 4.5.2.2, softening, cation
				exchange process, design; 4.5.2.3, softening, cation exchange process, design;
				4.5.2.4, softening, cation exchange process, depth of resin; 4.5.2.5,
				softening, cation exchange process, flow rates; 4.5.2.7, softening, cation
				exchange process, underdrains and supporting gravel; 4.5.2.8, softening, cation
				exchange process, brine distribution; 4.5.2.9, softening, cation exchange
				process, cross-connection control; 4.5.2.10, softening, cation exchange
				process, bypass piping and equipment; 4.5.2.11, softening, cation exchange
				process, additional limitations; 4.5.2.12, softening, cation exchange process,
				sampling taps; 4.5.2.13-4.5.2.13(f), softening, cation exchange process, brine
				and salt storage tanks; 4.5.2.14, softening, cation exchange process, salt and
				brine storage capacity; 4.5.2.15, softening, cation exchange process, brine
				pump or eductor; 4.5.2.18, softening, cation exchange process, construction
				materials; 4.5.2.19, softening, cation exchange process, housing; 4.5.3,
				softening, water quality test equipment; 4.6-4.6.14, anion exchange treatment;
				4.7-4.7.11, aeration; 4.8, iron and manganese control; 4.8.1-4.8.1.3, iron and
				manganese control, removal by oxidation, detention and filtration; 4.8.2, iron
				and manganese control, removal by the lime-soda softening process;
				4.8.3-4.8.3(f), iron and manganese control, removal by manganese coated media
				filtration;-4.8.4, iron and manganese control, removal by ion exchange;
				4.8.6-4.8.6(d), iron and manganese control, sequestration by polyphosphates;
				4.8.7-4.8.7(e), iron and manganese control, sequestration by sodium silicates;
				4.8.8, iron and manganese control, sampling taps; 4.9.3-4.9.3(e), stabilization
				and corrosion control, carbon dioxide addition; 4.9.5, 4.9.5(c)-4.9.5(c)(9),
				stabilization and corrosion control, phosphates, design; 4.9.6-4.9.6.1(c)(4),
				stabilization and corrosion control, pH/alkalinity adjustment; 4.10, taste and
				odor control; 4.10.1, taste and odor control, flexibility; 4.10.2, taste and
				odor control, chlorination; 4.10.3, taste and odor control, chlorine dioxide;
				4.10.4-4.10.4(f), taste and odor control, powdered activated carbon; 4.10.8,
				taste and odor control, potassium permanganate; 4.11, membrane technologies for
				public water supplies; 4.11.1-4.11.1(c), membrane technologies for public water
				supplies, pilot study/preliminary investigations; 4.11.2-4.11.2(l)(4), membrane
				technologies for public water supplies, general design considerations;
				4.11.3-4.11.3(h), membrane technologies for public water supplies, systems
				treating surface water or GWUDI; 5.4.7-5.4.7(f), specific chemicals, fluoride;
				5.4.8, specific chemicals, activated carbon; 9.3-9.3(a)(2), precipitative
				softening sludge, lagoons; 9.4.1-9.4.1(h), alum sludge, lagoons; 9.5-9.5.1(k),
				red water waste, sand filters; 9.5.2-9.5.2(g), red water waste, lagoons; 9.5.3,
				red water waste, discharge to community sanitary sewer; are herein incorporated
				by reference.
(b) The capacity of
				the water treatment or water production system shall be designed for the
				maximum daily demand at the design year.
(c) Presedimentation shall be required for
				raw waters that have episodes of turbidity in excess of 1,000 Nephelometric
				turbidity units (NTU) for a period of one week or longer.
(d) Basins shall meet the following
				requirements:
(i) Basins without mechanical
				sludge collection equipment shall have a minimum detention time of three
				days;
(ii) Basins with mechanical
				sludge collection equipment shall have a minimum detention time of three
				hours;
(iii) Basins shall have a
				bottom slope to drain of ¼ inch per foot without mechanical sludge
				collection equipment and two inches per foot with mechanical sludge collection
				equipment; and
(iv) Basins shall
				have a minimum of one, eight-inch drain line to completely dewater the
				facility.