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Waste Water Treatment Plant

Waste Water Treatment Plant

Waste Water Treatment Plant

1.      Introduction

     Sustainable water use is the use of water that supports the ability of human society to endure and flourish into the indefinite future without undermining the integrity of the hydrological cycle or the ecological systems that depend on it.
Protecting the world’s water resources has never been more important. Yet managing those resources has become more complex than ever.
Waste water is comprised of approximately 99% water. Suspended solids, which make up the remaining 1%, contain soluble and insoluble substances such as nitrates, phosphorous and heavy metals present in varying concentrations, and bacteria, viruses and other microorganisms.
Contaminants, which are of public health and environmental concern in raw waste water, include:

Bacteria, Viruses and pathogenic Microorganisms
Waterborne microorganisms such as fecal streptococcus, if transported to drinking or contact recreational waters, present a potential for spread of disease.
Nitrogen
Nitrogen in sewage transforms in the soil to nitrate. The presence of nitrate in significant concentration produces a bitter taste in water and can cause illness. Elevated concentrations of nitrate in drinking water have been linked to the disease methemoglobinemia in infants.
Phosphorous
Primarily a threat to the surface water environment, phosphorous promotes algal plant growth which accelerates lake eutrophication (the aging process of lakes) which can lead to odor and nuisance problems. A significant source of phosphorous in wastewater is household detergents.
Salts
Elevated levels of chorine, sodium and other salts in drinking water are of public concern.
Organic Material
Oxygen demand required for the decaying of organic material in water reduces the dissolved oxygen concentration in a body of water. When the dissolved oxygen content is severely reduced or depleted, fish kills are more likely to occur.

Waste water that cannot be discharged to sanitary sewers for treatment at a centralized waste water treatment plant must be treated on the site where it originated. Systems for on-site treatment of waste water are referred to as “septic systems”, “on-site disposal systems”, subsurface disposal systems” or “individual sewerage systems”(SSDS) among others.
Sewage flows from the original area into the septic tank where the heavier solids settle to the bottom forming a sludge deposit. Lighter solids, such as grease, float to the top and form a scum layer. The liquid flows from the septic tank into an absorption system where it soaks into the soil. This process provides treatment of the sewage by gravity settling and skimming, biological decomposition and soil filtration. Proper functioning of an individual sewerage system depends on adequate design, proper construction, careful use and maintenance.
Today, we need science-based solutions reflecting expertise in environmental engineering, technology, regulatory issues, design and project management.
The best approach is to find a single source for these services. This streamlines the work process, maximizes your performance, extends your budget furthest and ensures greater accountability.

2.   General Process Information
2.1 Work flow for building up a waste water treatment system     Upon signing up a contract of waste water treatment system, the system suppliers should discuss with their clients for the project implementation. The work flow bellows should be followed for finishing project smoothly.

Step 1Environmental Monitoring and Audit
Waste water is unique. It must be examined and audited before processing the design proposal. We need a laboratory to support the analysis and pilot test activities.

Step 2Water Analysis and Pilot Test
The laboratory can exam and simulate the treatment method. Pilot test for waste water can justify the workability.

Step 3Process Design
The engineer must follow the environmental audit, water analysis and pilot test results to design the system.

Step 4System Fabrication
Suppliers should have their own engineer, technicians and workers to serve the project fabrication.

Step 5In-Site Installation and Testing & Commissioning
With excellent expertise plus certified quality system, suppliers can finish the sophisticated projects with client’s satisfaction.

Step 6: Plant Operation and Effluent Monitoring

Techgen Engineering Ltd should offer plant management and operation service of water and wastewater treatment plant to our client. Suppliers are providing not only labor but also their technical backup in order to keep operation smoothly and efficiently.

3.   Plant Description

3.1  Waste water treatment system

  According to the different demand, standard of let out, process methods, suppliers can provide you professional waste water treatment system, the service range including waste water, heavy metal waste water and electroplating waste water.
Waste water contains inorganic and organic impurities. In addition to such matter, it contains microorganisms liable to decompose organic matter and cause putrid fermentation. The purpose or waste water treatment is to obtain a purified effluent within the range of pollution limit.
Waste water treatment consist with influent, reaction, subsidence component basic grade, every stage such as anaerobic, anoxia, aerobic of condition has already adjusted automatically into the best quality according to the demand.

Waste water treatment system

3.2  Bio-through natural treatment 

Use altogether natural purification principium come control sewage effluvium accrue; it is basic on soil germ (microorganism) and world of nature formation humus process duplicate. Because sewage always exist the microorganism, it will decompose organic material and accrue effluvium, again damagingly natural balanced condition .The organic material convert into odorless rotten soil or fertilizer, but as natural balance being breakage time, the organic material will addle and accrue odor.

Application Field:
1. Septic tank
2. Community sewerage 
3. City, village, town sewerage
4. Aquatic farm
5. Industrial waste water

Application Field

3.3  Industrial waste water treatment

Heavy metal waste water recycling–Ion exchange resin handing technology

Techgen Engineering Ltd. - Industrial wastewater treatment

Usage:

–Noble metal recycling: gold, silver, palladium and platinum.
–Heavy metal recycling: nickel, copper, zinc, lead, chromium acid.
–Water resource recycling.

Applied subject:

–Electroplating factory
–Electronic factory
–Printed circuit factory
–Metal surface handling factory
–Heavy metal waste water handling factory

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