What are the main causes and effects of water pollution? — Transcript

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1. 0:00this video is about the causes and
2. 0:02effects on the environment and human
3. 0:04beings of water pollution and the
4. 0:06compounds related to this kind of
5. 0:08pollution
6. 0:10water pollution occurs due to any change
7. 0:13in biological chemical or physical water
8. 0:16quality that causes harm to living
9. 0:18organisms or makes the water unsuitable
10. 0:20for consumption
11. 0:22the most important categories of
12. 0:24pollutants are infectious agents oxygen
13. 0:27demanding waste inorganic chemical
14. 0:29substances nutrients radioactive
15. 0:32materials and heat
16. 0:35infectious agents such as viruses and
17. 0:38bacteria can cause the transmission of
18. 0:40diseases through water and can
19. 0:42contaminate water through human and
20. 0:44animal waste
21. 0:46some examples of waterborne diseases are
22. 0:49hepatitis a giardiasis diarrhea
23. 0:52amibiasis cholera leptospirosis and
24. 0:56bacterial dysentery
25. 0:59organic products such as oil gasoline
26. 1:03plastics pesticides can originate from
27. 1:06industries farms and gardens and can be
28. 1:09harmful to the environment to human
29. 1:11health as well as fish and other animals
30. 1:14oil spill episodes have already occurred
31. 1:17in several parts of the world and are
32. 1:19usually considered environmental
33. 1:21catastrophes
34. 1:22most of the human waste present in the
35. 1:24seas is made of plastic such as bags
36. 1:28bottles and disposable containers
37. 1:31this demonstrates the need to reduce the
38. 1:33use of this kind of material
39. 1:36inorganic products such as heavy metals
40. 1:39like lead and arsenic can accumulate in
41. 1:42the body's cells causing problems such
42. 1:44as kidney changes brain damage and it is
43. 1:47suspected that they can also increase
44. 1:49the risk of cancer
45. 1:51the most dangerous heavy metals to human
46. 1:54health are mercury arsenic lead barium
47. 1:58cadmium and chromium
48. 2:01the increase in the amount of nitrate
49. 2:03and phosphate which are nutrients in the
50. 2:05aquatic environment can cause the
51. 2:07eutrophication process
52. 2:10during eutrophication there will be an
53. 2:12excessive emergence of organisms such as
54. 2:15algae and cyanobacteria
55. 2:17in this process the water body acquires
56. 2:20a cloudy color making photosynthesis
57. 2:23difficult and causing a decrease in
58. 2:25oxygen content and also the death of
59. 2:27several species
60. 2:30oxygen demanding organic waste such as
61. 2:33sewage and manure can be decomposed by
62. 2:36bacteria in the water body reducing the
63. 2:38oxygen content in water bodies harming
64. 2:41fish and other living organisms that use
65. 2:43oxygen in the aquatic environment
66. 2:46if an oxygen demanding organic waste is
67. 2:49released into the water the process of
68. 2:51self-purification may occur
69. 2:54in this process there is a restoration
70. 2:56of balance in the aquatic environment by
71. 2:59essentially natural mechanisms after the
72. 3:02alterations induced by the wastewater
73. 3:04discharges
74. 3:06during this process organic matter will
75. 3:08be oxidized releasing carbon dioxide
76. 3:12according to the reaction
77. 3:14organic matter plus oxygen plus bacteria
78. 3:17originating carbon dioxide water
79. 3:20bacteria and energy
80. 3:23atmospheric reaeration and
81. 3:25photosynthesis will also occur
82. 3:27replenishing the oxygen content in the
83. 3:29water if the wastewater release is not
84. 3:32very high
85. 3:34in the photosynthesis reaction carbon
86. 3:36dioxide plus water plus energy
87. 3:39luminosity originate organic matter plus
88. 3:42oxygen
89. 3:42[Music]
90. 3:44the knowledge of the self-cleaning
91. 3:46phenomenon and the assimilation capacity
92. 3:48of rivers may be used to prevent the
93. 3:50release of wastewater above what the
94. 3:52body of water can support
95. 3:56sediments can originate from erosive
96. 3:58processes and cause a reduction in
97. 4:00photosynthesis due to difficulty in
98. 4:02passing light transporting harmful
99. 4:05substances obstructing and silting up
100. 4:07lakes
101. 4:09thermal pollution can harm aquatic life
102. 4:12or cause the death of fish due to rapid
103. 4:14temperature changes which would cause a
104. 4:16thermal shock
105. 4:18furthermore there may be a reduction in
106. 4:20the level of oxygen in the water which
107. 4:23is also harmful to aquatic life
108. 4:27radioactive materials are pollutants
109. 4:29that can cause cancer birth defects and
110. 4:32genetic mutations if they contaminate
111. 4:34water bodies
112. 4:36to minimize water contamination garbage
113. 4:39and sewage collection and treatment must
114. 4:41be carried out reducing the contaminants
115. 4:44present before being released into
116. 4:46rivers and seas and reducing the
117. 4:48emission of polluting agents to preserve
118. 4:51and protect existing springs and also
119. 4:54economy and rational use of water must
120. 4:56be a priority
121. 4:59if you liked the video leave a comment
122. 5:02and don't forget to subscribe