1. Simulation test Aerobic sewage treatment, Activated sludge units (OECD 303A)

2. Chapter C.11 of this Annex, Activated sludge respiration inhibition test.

3. Chapter C.11 of this Annex, Biodegradation — Activated Sludge Respiration Inhibition Test.

4. Schaefer, E. C. and Siddiqui, A.I. , `Decabromodiphenyl oxide: an activated sludge, respiration inhibition test

5. Soil sludge, compost sludge, bio-sludge and clarified sludge mixers (machines)

6. Screw conveyors, in particular for sludge, including digested sludge, industrial sludge or sewage sludge

7. If the activity of the sludge is unknown, it is recommended to carry out a preliminary test.

8. Sludge collector having sludge collecting block

9. To assure that the sludge would consolidate and gain strength as predicted, a test embankment was built.

10. Sludge heating unit, sludge heating method, and sludge hydrolysis apparatus using same

11. Blank controls contain an equal volume of activated sludge and synthetic medium but not test or reference chemical.

12. The source of test organisms is activated sludge freshly sampled from a well-operated municipal sewage treatment plant.

13. When the test is started, 16 ml of synthetic sewage and 250 ml of activated sludge are added.

14. Four different kinds of sludge were used: alum sludge (water treatment), waste-activated sludge, simultaneous precipitation, and anaerobically digested mixed sludge.

15. - Activated sludge : sludge sampling sites and concentration,

16. The sludge is pumped into a sludge digester, and from there it goes into the sludge chamber.

17. SLUDGE ACID

18. Activated sludge

19. The digested sludge is dewatered and the liquid sludge fraction and the liquid component of the dewatered digested sludge is passed to an activated sludge tank (6).

20. - re-circulation of activated sludge and pumping off of excess sludge,

21. - sludge storage basin,

22. Sludge supply device

23. Sludge-processing device

24. mean sludge age and mean hydraulic retention time; method of sludge wastage; methods of overcoming bulking, loss of sludge, etc. ;

25. mean sludge age and mean hydraulic retention time; method of sludge wastage; methods of overcoming bulking, loss of sludge, etc.

26. Sludge will be treated using an activated sludge process, entailing prolonged aeration.

27. Guarantee proper operation of secondary clarifier sludge collection and return sludge pumping

28. Activated sludge process

29. Activated sludge chambers

30. Sludge is exposed to the test substance for up to 60 days, which is longer than the normal sludge retention time (25 to 30 days) in anaerobic digesters, though at industrial sites retention times may be much longer.

31. Sludge-drying apparatus

32. The fate of the test chemical in the simulation of the activated sludge process would then be determined in liquid and solid phases.

33. Digested sludge inoculum (Vl )

34. Activated sludge plant: overviews

35. Activated sludge treatment systems

36. Digestion of organic sludge

37. Inoculation with activated sludge

38. Cesspits Equal footing, as it would seem In pursuant to containing The human sludge Rank sludge, foul sludge The sludge Standing of the near-immaculate Must still be shielded from The unfortunate

39. Activated sludge plant: detail

40. Device for removing bottom sludge and/or floating sludge from circular settling basins

41. From Sludge to Soil

42. Sufficient air must pass through the system to maintain aerobic conditions and to keep sludge flocs in suspension at all times during the test.

43. (32) Conventional treated sewage sludge includes lagoon stored, thickened and mesophilic anaerobic digested sludge.

44. - Recirculation of activated sludge

45. You drank that sludge?

46. Activated sludge respiration inhibition testing

47. - buffer tank for digested sludge

48. Treatment of sludge, in particular fatty sludge, by means of hydrolysis and aerobic digestion of fats

49. - Settling properties of activated sludge : the activated sludge in large flocs, must have good settling properties.

50. Process for aerobic sludge treatment

51. Then there is treated sludge.

52. Centrifugal separator for food sludge

53. Sludge can be removed from the bottom and also withdrawn from the sludge-blanket zone.

54. - removal of excess activated sludge,

55. Treatment plant with activated sludge

56. Activated Sludge Simulation Biodegradability Tests

57. See that green bubbling sludge?

58. 9.2 | Of which: Sewage Sludge Gas | A biogas produced from the anaerobic fermentation of sewage sludge |

59. Conversion of Sludge into Useful Products : The sludge obtained on treatment of effluents is also a problem .

60. Sludge treatment device having dehydrator

61. Raw sludge used in these studies was obtained from a municipal high-rate activated sludge plant.

62. Activated sludge degassing process and device

63. Sludge discharging device for settlement basin

64. Apparatus for pre-treating waste activated sludge and method for pre-treating waste activated sludge using same

65. Primary sludge is found to be antithixotropic at low shear stress. Digested sludge does not exhibit time dependency.

66. Upflow anaerobic sludge blanket (UASB) process

67. Figure 1 Activated sludge plant: overviews

68. Process for processing acid resins sludge

69. Prevents buildup of tank bottom sludge.

70. The pilot-plant treating 70 population equivalents of domestic wastewater is operated with a 12 day sludge age. Nanosilver was applied to the activated sludge tank within two sludge ages.

71. Activated sludge process for sewage purification

72. For instance, he interfered with the hauling of sludge, causing sludge to back up at the plant, they said.

73. Sludge hydrolysis device, a sludge hydrolysis method using the same, and a contact type of heat exchange unit and steam type of heat exchange unit provided in the sludge hydrolysis device

74. Activated Sludge: Conventional Volatile NPRI substances can be emitted to air in an activated sludge process aeration vessel.

75. Waste water treatment using activated sludge processes

76. Three-row chain flight-type sludge collector

77. Thermophilic aerobic sludge digestion is operated at elevated temperatures, to achieve sludge stabilization, volatile solids (VS) destruction, and pasteurization.

78. The activated sludge mixture is sent to a separation facility from where the sludge is recycled to the aeration tank.

79. With the conventional sludge processes only a limited high dry matter content TSBB can be achieved in an activated sludge tank and a high amount of return sludge has to be pumped.

80. EVALUATION OF INHIBITION OF THE ACTIVATED SLUDGE