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2. How to rid your home of spiders, according to a pest pro - AOL

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   Before you hire a professional (always a good idea, particularly if you’re concerned that spider activity is happening out of view), Fredericks outlines some simple steps you can take to rid ...

3. How to Safely Remove Poisonous Black Widow Spiders From ... - AOL

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   If you've been knowingly bitten by a black widow spider, you can expect mild discomfort at the bite area and immediately seek medical treatment. Symptoms you may develop can include pain, swelling ...

4. The Best Way To Keep Spiders Away From Your Home ... - AOL

   www.aol.com/best-way-keep-spiders-away-123529750...

   Researchers are investigating whether this species may negatively impact native spiders, says Chuang. In the meantime, if you find one of their giant webs, which can span more than 10 feet, remove ...

5. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Station for complex water treatment SKO-10K. One of the first steps in most conventional water purification processes is the addition of chemicals to assist in the removal of particles suspended in water. Particles can be inorganic such as clay and silt or organic such as algae, bacteria, viruses, protozoa and natural organic matter.

6. Water treatment - Wikipedia

   en.wikipedia.org/wiki/Water_treatment

   Dalecarlia Water Treatment Plant, Washington, D.C. Water treatment is any process that improves the quality of water to make it appropriate for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.

7. Wastewater treatment - Wikipedia

   en.wikipedia.org/wiki/Wastewater_treatment

   Ch.14 Biogas can be another by-product if the process uses anaerobic treatment. Treated wastewater can be reused as reclaimed water. [3] The main purpose of wastewater treatment is for the treated wastewater to be able to be disposed or reused safely. However, before it is treated, the options for disposal or reuse must be considered so the ...