BHU Umwelttechnik GmbH has deep know-how, being predestinated to solve almost every technology and process requirement in water, wastewater and sludge treatment in both dimensioning and implementation. Furthermore, we are using advanced and unique technologies for, chemical-physical, biological and thermal applications.


For some applications - such as the high-performance flocculation and sedimentation reactor LHPS -

BHU Umwelttechnik GmbH has issued technological licences in several countries.


BHU Umwelttechnik GmbH is highly experienced in LHPS and BAF technology applied to

municipal and industrial wastewater treatment applications.

The StR process furthermore offers holistic treatment possibilities for municipal sewage sludge providing the following advantages:

- highest production of electric power

- production of ashes instead of residual waste

- recovery of nutrients like phosphorous and nitrate as a fertilizer value


Clarification (LHPS)

LHPS Reactor – Precipitation, flocculation, sedimentation, clarification and sludge thickening in a compact structure

High process stability also at changing raw water conditions

High outlet quality

High sludge concentration (integrated thickener)

Minimal space requirement (<35% compared to conventional solutions)

Biologically Aerated Filtration (BAF) – Biofiltration


BOD & COD- removal, nitrification, de-nitrification of wastewater and polluted surface water
Biology and sludge retention in a compact structure

High biological performance

Fully automatic operation with load-dependent backwashing

Modular multi-stage structure for carbon removal, nitrification and pre- and post-denitrification

Space requirement <50% compared to conventional systems
Full enclosure possible

Gravity Filtration (SMF/MMF)

Single-media or multi-media filtration for removal of particles and suspended solids

Excellent solids retention with high absorption capacity

Fully automatic operation with load-dependent backwashing

Modular design with a small footprint

Biologically activatable (biopolishing)

Full enclosure possible

BiosS-Treat®-Filtration / Reverse Osmosis (RO) 


Patent protected process / Biologically activated media filtration and biostatics dosing | TOC removing precursor for reverse osmosis | Prevention of biofouling

Drastic extension of the cleaning intervals of reverse osmosis systems for surface water use

Maximized life of reverse osmosis membranes

Significant operating cost savings and protection of the environment

Environment, Security, Quality.

ISO 9001, ISO 14001, OHSAS 18001.

BHU Umwelttechnik GmbH | Einsteinstraße 57 | 71229 Leonberg | Germany |

Company of the Almawatech Group, Babenhausen