PLANKTON IN WATER SUPPLY MEIER 



409 



CHEMICALS REQUIRED FOR TREATMENT OF DIFFERENT GENERA 

 OF PLANKTON— Continued 



Organism 



Cj'anophyceae: 



Anabaena 



Aphanizomenon _ _ 



Clathrocystis 



Coelosphaerium . . 

 Cylindrospermum . 

 Gloeocapsa (red)_. 



Microcystis 



Oscillaria 



Protozoa: 



Ceratium 



Chlamydomonaa. 



Cryptomonas 



Dinobryon 



Endamoeba histoly- 

 tica (cysts). 



Euglena 



Glenodinium 



Mallomonas 



Peridinium. 

 Syniira 



Uroglena. 



Rotifer: 



Stentor 



Crustacea: 



Cyclops 



Daphnia 



Schizomycetes: 



Beggiatoa 



Cladothrix. 

 Crenothrix. 



Sphaerotilis natans. 



Spirophyllum 



Thiothrix 



Fungus: 



Achlya 



Leptomitus 



Saprolegnia 



Miscellaneous: 



Chara 



Nitella flexilis 



Potamogeton 



Nais 



Blood worm, chiro- 



nomus. 

 Blood worm, gnats - 



Odor 



Moldy, grassy, vile 

 Moldy, grassy, vile 

 Sweet grassy, vile.. 



Sweet grassy 



Grassy 



Fishy, vile, rusty 

 brown color. 



Candied violets 



Aromatic, violets, 

 fishy. 



Fishy 



Aromatic, violets, 

 fishy. 



Fishy, like clam 

 shells. 



Cucumber, musk- 

 melon, fishy, bit- 

 ter taste. 



Fishy, oily, cod- 

 liver oil taste. 



Very offensive de- 

 cayed. 



Very offensive de- 

 cayed, medicinal 

 with chlorine. 



Very offensive de- 

 cayed. 



Objectionable. 



Copper sulfate 



Parts 



per 



million 



0. 12- 0. 48 



. 12- 

 . 12- 

 . 20- 



20- 

 24- 



50 

 25 

 33 

 12 

 24 

 20 

 50 



33 



36- 1.0 

 .50 



. 18 



.50 

 .50 

 . 50 



50- 2. 



12- . 25 



05- . 20 



. 24 



33- 



2.00 



5.00 



. 20 

 . 5 



.40 



.40 

 . 18 



10- . 50 

 10- . 18 

 30- .80 



Pounds 



per 

 million 

 gallons 



1. 0- 4. 



1. 0- 4. 2 



1. 0- 2. 1 



1. 7- 2. 8 



1.0 



2.0 



L7 



1. 7- 4. 2 



2. 0- 2. 8 



3. 0- 8. 3 



4.2 

 1. 5 



Chlorine 



Parts 



per 



million 



0. 5- 1. 



.5- 1.0 



.5- 1.0 



. 5- 1. 



1. 1 

 .3- 1. 



4.2 

 4. 2 

 4.2 



4. 2-16. 6 



1. 0- 2. 1 



0. 4- 1. 6 



2.0 



16. 6 



41. 5 



1. 7 

 2. 8- 4. 2 



3.3 



3. 3 



1. 5 



. 8- 4. 2 



.8- 1. 5 



2. 5- 6. 7 



.3- 1. 



25. 0-100. 



1. 



O 3- 1. 



a 3- 1. 



1. 0- 3. 

 1. 0- 3. 



. 5- 



.25 

 1.0 



1.0 

 15. 0- 50 



3.0 



