Friday, October 23, 2009

Malaysians Guidelines STP Developers

PART 1

General Planning Approval Requirement

The application procedures for sewage treatment plant approval shall follow the requirement given in volume 2 of these guidelines. In general, the application for approval of a treatment plant shall include:

  • Sufficient land area for the sewage treatment plant plus additional area to allow for extension to the plant, where necessary.
  • Buffer zones
  • The location of the sewage treatment plant in relation to the reminder of the system. Sufficient topographic features shall be included to indicate its location in relation to stream and the point of discharge of treated effluent.
  • Schematic flow diagrams showing utility systems serving the plant processes and the flow through various plant units.
  • Piping, including any arrangements for by-passing individual units. The direction of flow through pipes shall also be shown.
  • Hydraulic profiles showing the flow of sewage, supernatant liquor, and sludge
  • Location, dimensions and elevations of all existing and proposed plant facilities
  • Point of discharge of treated effluent (effluent outfall) and the elevations of high and low water level of the body of water to which the plant effluent is to be discharged.
  • Type, size, features and operating capacity of all pumps, blowers, motors and other mechanical devices together with manufacturer catalogues.
  • Minimum, average and maximum flows, velocities and top water level in profiles.
  • Accessibility, landscaping and fencing
  • Flow measurement facilities
  • Materials, dimensions and specifications.
  • Ground conditions including levels, type, groundwater level and safe bearing pressure of foundation.
  • Details of foundation design.
  • All other component parts of the sewage treatment plant.
  • A technical report, which covers the ‘whole life’ cost evaluation of the plant.
  • Presentation requirements, process and instrumentation diagram, and mass balances.
  • Detailed drawings that are clear and legible and of standard format.
  • Detailed information on operation and maintenance

Tuesday, October 20, 2009

Accident Fire and Pollution?



Looking at the smoke, you know what is happening to the environment.
This called an accidential pollution. Same like hazard spill at sea, factory or work place.
There is requirement for emergency requirement (ERP) in controlling such as hazards from above mention sources.
This accident happen during gun battle between drug dealers and police at Rio de Janeiro. Environment maybe doesn't like so critical to control such these accidential fire. But maybe, fine maybe increase to the dealer because of polluting.
ERP for accidential during gengstrism demolishment maybe needed in order to safe our environment.

Tuesday, October 6, 2009

Equilization Tank

Tank which consist of transfer pump and aerator. Construction of equilization tank may useful to balance treatment intake in the aeration tank. It will also useful in contolling volume of water to be treated in the aeration tank. As such, equilization tank is very important in optimizing treatment process at downstream i.e if water in the aeration tank reach its volume, feed pump will stop feeding the aeration tank while the incoming water will simultaneously accumulated/be in equilization tank before next coming volume.

Like continuos treatment such as extended aeration (EA), Equilization tank will be a buffle tank for the aeration tank during surge flow. Surge flow in treatment process may cause stability of treatment process like 'over' flowing of MLSS which means, the depletion of suspended's food digestor.

Overflowing of digestor to FE will also cause unwanted bacteria (filamentous bacteria) to grow in treatment tank, hence create hard conditions during settlement process.

Guideline by Malaysian authority during wastewater plant construction shows that, construction of equilization tank will subsequently reduce aeration tank size by specific ratio.