No. Item

1 General Requirement Four copies of designs submitted

Plan showing set back distances, proposed WWTP, security measures etc. provided

Submitted WWTP designs reflects Outline approval

North arrow shown on map

Point of discharge indicated

2 Flow Requirements Type of Development

Occupancy Figure

Area of Development (ha)

3 Pre Treatment Units Plan and Sectional Drawings of Screening Mechanism and Grit Chamber provided

Calculations for Design of Screening Mechanism and Grit Chamber provided

Calculations shall include the following:

a.

b.

c.

d.

e.

f.

4 Primary Treatment Plan and Sectional Drawing of Pre-treatment tanks and/or Primary Clarifiers

Calculations for Pre-Treatment tanks and/or Primary Clarifiers provided

Calculations shall include the following:

a.

b.

c.

d.

5 Secondary Treatment Plan and Sectional Drawings of Aeration tank

Calculations for Aeration tank provided

Calculations shall include the following:

a.

b.

c.

d.

e.

Note: the same details for calculation for a different type of reactor would apply

Calculations Showing Oxygen Requirement for Aeration Tank provided

Calculations must include the following:

a.

b.

c.

Requirements for Submission

Wastewater Treatment Plant General Design Checklist

Lifting devices provided for removal of aerators (details required)

6 Secondary Clarifier Plan and Sectional Drawings of Clarifier

Calculations must include the following:

a.

b.

c.

d.

e.

f.

7 Sludge Handling Plan and Sectional Drawings of Sludge Handling Mechanism

Calculations for Sludge Handling Mechanism

E.g. Aerobic Digester, calculations must include:

a.

b.

c.

d.

E.g. Sludge Drying Bed, calculations must include

a.

b.

c.

d.

8 Disinfection Disinfection methodology/Type of disinfection proposed

No. of units to be used and order of use - must state the following

a.

b.

9 Other The following must be included in the WWTP submission

a.

b.

c.

d.

e.

f.

g.

h.

i.

j.

k.

l.

m.

n.

o.

p.

q.

r.

s.

Four copies of designs submitted

Plan showing set back distances, proposed WWTP, security measures etc. provided

Submitted WWTP designs reflects Outline approval

North arrow shown on map

Point of discharge indicated

Type of Development

Occupancy Figure

Area of Development (ha)

Plan and Sectional Drawings of Screening Mechanism and Grit Chamber provided

Calculations for Design of Screening Mechanism and Grit Chamber provided

Calculations shall include the following:

Clear spacing for screens (mm)

Screen dimensions

Detention Time for Grit Chamber

Horizontal Velocity for Grit Chamber

Settling Velocity for Grit Chamber

Volume of Grit Chamber

Plan and Sectional Drawing of Pre-treatment tanks and/or Primary Clarifiers

Calculations for Pre-Treatment tanks and/or Primary Clarifiers provided

Calculations shall include the following:

Retention Time for Tanks

Tank dimensions and volume

Water Velocity in Clarifier

Skimmer Scraper Power in Clarifier

Plan and Sectional Drawings of Aeration tank

Calculations for Aeration tank provided

Calculations shall include the following:

Reactor Volume

Mean Cell Residence Time

Mixed Liquor SS Solids

Retention Time

Food/Mass Ratio

Note: the same details for calculation for a different type of reactor would apply

Calculations Showing Oxygen Requirement for Aeration Tank provided

Calculations must include the following:

Oxygen Requirement (Kg Gzld)

Efficiency of Equipment ()

Air required for mixing (Specifications for blower/aerator required)

Requirements for Submission

Wastewater Treatment Plant General Design Checklist

Lifting devices provided for removal of aerators (details required)

Plan and Sectional Drawings of Clarifier

Calculations must include the following:

Tank dimensions and volume

Recycle Ratio

Solids Loading Rate

Overflow Rate

Weir loading Rate

Retention Time

Plan and Sectional Drawings of Sludge Handling Mechanism

Calculations for Sludge Handling Mechanism

E.g. Aerobic Digester, calculations must include:

Volume of Sludge

Volume of Digester

Air Requirements and associated specs.

Retention Time

E.g. Sludge Drying Bed, calculations must include

Volume of Wet Sludge

Mass of Secondary Solids

Dimensions and number of Sludge Beds

Drainage and media provided (details required)

Disinfection methodology/Type of disinfection proposed

No. of units to be used and order of use - must state the following

Minimum/Maximum Flow rate to be treated by each UVlChlorination System

Effluent levels that are expected with the system proposed

The following must be included in the WWTP submission

Flow Monitoring Mechanism for Large WWTP (weirs, meters) and their specs

Generator (for Large WWTP) provided. Auxillary storage fuel, noise control measures, plinth,

housing, vent, unit specifications provided

Operations and Maintenance Plan (for Large WWTP) provided

Sampling points on the influent and effluent of the WWTP provided

Setback distances should be a minimum of 25 m and l.5m from property and habitable

buildings for Large WWTPs and Small WWTPs respectively.

Independent bypass along system provided

Certification for pre fabricated WWTP form a Reputable Organisation, specs. provided

Pipe sizes, length, type and classes to be used in the WWTP provided

Piping properly secured. Aboveground PVC pipework to be laid below ground, encased or be

replaced by steel type

Valves used within WWTP suitable for use in wastewater environments, specs req'd

WWTP located downwind of habitats & downstream of water treatment plant

Adequte security lighting, fencing, signage and accessway provided

Potable water (hose bib), water storage (90 lpm at 30 m pressure) and pump provided

Grounds must be properly paved and have proper surface drainage, vehicular and service

access to WWTP

Operators building with storage for equipment, water closet, face basin and shower provided

Aritectural & structural plans and sections of Operatior's building provided

Apron provided around Operator's Building

For packaged plants influent & effuent empirical data on parameters (BODS, TSS, pH, etc).,

based on prior use of the system is required'

For package plants, the treatment capacities ofthe process units in terms of BOD, COD, etc. is

required