Environment engineering i
Sponsored Links
This presentation is the property of its rightful owner.
1 / 16

Environment Engineering I PowerPoint PPT Presentation

  • Uploaded on
  • Presentation posted in: General

AnNajah National University Civil Engineering Department. Environment Engineering I. Chapter Eight -section 1. Water Quality Management. Dr. Amal Hudhud Dr. Abdel Fattah Hasan. Introduction.

Download Presentation

Environment Engineering I

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript

AnNajah National University

Civil Engineering Department

Environment Engineering I

Chapter Eight -section 1

Water Quality Management

Dr. Amal Hudhud

Dr. Abdel Fattah Hasan


How we used the water in lake , river, pond, stream is generally influence by the quality of water found on.

Water quality managers are concerned with controlling pollution from human activity

Assimilated means : to know how much waste can be tolerated by a water body


  • By understanding how pollutants effects water quality, Environment Engineer can properly design treatment facilities

  • This chapter deals with the major types of pollutants and their resources, water quality management in river and Groundwater quality


Water pollutants & their resources

Point sources (1)

  • Example: domestic and industrial wastes, they collected by networks and converted to a single point.

  • Can be reduced by minimizing waste and proper WWT

Non Point sources(2)

1) Example :urban and agricultural runoff

2)Multiple discharge points, polluted

water flows over the surface of the land

3) Treatment is more difficult

Oxygen demanding Materials (3)

Anything that can be oxidized in the

receiving water resulting in the

consumption of Dissolve oxygen (DO)

Example : human waste and food residue

Depletion of DOthreat fish and other

aquatic life

Nutrients (4)

  • Nitrogen & Phosphorus

  • All living thing require them for growth

  • Problem arise when nutrients level become excessive lead to large growth of algae which turn to Oxygen Demanding Materials

Pathogenic organisms (5)

  • Found in Waste water

  • Example : bacteria, viruses, Protozoa

  • Discharge to surface water make water unfit for drinking, swimming or to fishing

Suspended solids (6)

  • Organic and inorganic particles carried by wastewater to a receiving body can be settled if the flow velocity reduced

  • Organic particle cause depletion of DO

  • Non organic particle leads to light penetration decrease, cause turbidity, bacteria growth

Salts (7)

  • Total dissolve solids : salts and other matter that do not evaporate

  • Increase salt concentration

    • threaten natural population of plants and animals

    • Threaten public water supply and irrigation

    • Soil poisoning

Toxic Metals and toxic organic compounds(8)

  • Sources: Industrial waste water, pesticides .herbicides

  • Urban and agricultural Runoff


  • Endocrine disrupting chemicals

  • Arsenic (Naturally occur)

  • Heat : increase of water temperature effect on :

    • Salmon migration,

    • increase of Oxygen Depletion rate,

Water Quality Management in River

Water quality management includes:

  • Measure the pollutants

  • Predict their effect on water quality

  • Determine background water quality that would be present with human intervention

  • Decide the levels acceptable for intended uses of the water

Water quality management considered:

  • The nature of pollutants

  • The characteristic of individual river

  • Climate of the region

  • Land use patterns

  • Type of aquatic life in the river

Oxygen–demanding materials and nutrients

  • Oxygen –demanding materials and nutrients are the most common polluters in almost all type of river

  • Organic oxygen demanding materials are commonly measured by determining the amount of oxygen consumed during degradation of organic matter

  • Login