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High Performance Engineered Biofiltration Media

XLD is a high performance engineered biofiltration media specifically designed for biosolids applications where the removal of high odor, low H2S and reduced sulfur compounds are critical. Total odor removal efficiencies of up to 99% can be achieved in 30 seconds and greater than 95% in 20 seconds or less, allowing XLD to achieve higher total odor removal in less then half the time of conventional inorganic biofiltration medias. XLD’s short retention times and lightweight design allows for small footprints and unique bed configurations to meet specific site requirements.

pdf Biorem's XLD Sell Sheet


Figure 1: Predicted Biosolids Odor Removal by Biorem’s XLD Engineered Media

(click image to enlarge)


Feature Benefit 
Engineered XLD is an engineered media manufactured to exacting specification; this ensures predictability and consistent removal efficiency.
High Performance 99% removal of biosolids and other sewage plant odors in 30 seconds. Achieves removal of most reduced sulfur compounds to below detection limits.
Light weight  Permits design of unique bed configurations to meet specific site requirements.
Small Footprint  Lower EBRT’s reduces overall footprint
Reduce Capital Cost Overall installed cost can be reduced by up to 25% over conventional biofilters with inorganic media.
Warranty XLD is warranted for 10 years.



Following extensive research study, confirmatory pilot studies were conducted using Biorem's XLD media at three sewage plant sites and performance is summarized in Table 1.


Table 1: Odor Removal From Biosolids Air Emissions with XLD 
   20 seconds EBRT

 

 Plant One

 Plant Two*

 Plant Three

 Contaminant

Inlet 

Outlet 

Inlet 

Outlet 

Inlet 

Outlet 

% 

 Odor (D/T)

6090 

215 

96% 

34470 

912 

97% 

30544 

1499 

95% 

 H2S (ppb)

540 

ND 

100% 

12040 

ND 

100% 

2540 

ND 

100% 

 MM

60 

ND 

100% 

330 

ND 

100% 

990 

ND 

100% 

 DMS

60 

ND 

100% 

ND 

ND 

100 

ND 

100% 

 DMDS

30 

10 

67% 

ND 

ND 

220 

ND 

100% 

 Total RSC

150 

10 

93% 

330 

ND 

100% 

1310 

ND 

100% 

* EBRT was 15 seconds for odor and 10 seconds for others



At 30 seconds EBRT, the odor removal was 99% as presented in Table 2.

Table 2: Odor Removal From Biosolids Air Emission with XLD
      30 seconds EBRT

 Contaminant

Inlet 

Outlet 

% 

 Odor (D/T)

15360 

116 

99% 

 H2S (ppb)

2600 

 ND 

 100% 

 MM

260 

 ND

 100%

 DMS

 170

 ND

 100%

 DMDS

 50

 ND

 100%

 Total RSC

 480

 ND

 100%