As a supplier of holistic industrial water treatment solutions we offer made-to-order and turnkey industrial plants. One example of such is this project in Cambodia from 2016:

In 2016 Chriwa realised a water treatment plant for a renowned international beverage manufacturer in Phnom Penh. This turnkey large-scale plant was designed, designed, manufactured, delivered, assembled, and commissioned in terms of process technology by us. In addition, we supply to this day operating material, spare parts and offer after-sales services.

The plant supplies product water to produce carbonated soft drinks and table water and has a treatment capacity of 120 m³/h and is part of a larger 100 million US dollar greenfield project in the region.

Chriwa was chosen by the customer because we meet the high demands in terms of execution quality and process technology and can offer the best possible system yield. Hundreds of successful projects for beverage manufacturers worldwide demonstrate our commitment to the highest water quality.

The plant is supplied with city water, which can have low mineralization but significant fluctuations, especially in terms of turbidity.

First, the raw water is chlorinated before it is then discharged into the on-site stacking tank. The chlorinated water is then pumped to the further water treatment with the help of a pumping station.

First a bag filtration removes larger particles from the water.

The task of the downstream ultrafiltration (UF) is primarily to remove the turbidity from the water.

The system ensures a consistent filtrate quality (SDI value <2.5), even with increased turbidity values in the inlet. Thanks to the intelligent system control, the plant's yield is automatically adjusted to the inlet water quality. This ensures stable system operation and a particularly long service life of the UF modules.

The UF filtrate is temporarily stored in a buffer tank and then treated with activated carbon filtration.

The activated carbon is primarily used for dechlorination and for the removal of unwanted tastes and odours in the water. The water is then filtered via candle filters with a separation rate of 5 μm.

With the help of a caustic soda dosing station, the pH value in the inlet to the reverse osmosis system is adjusted to stabilize the water and to meet the requirements for the high system yield. UV disinfection of the now dechlorinated water also ensures a reliable and harmless way of killing possible viruses, bacteria, and germs of all kinds. This prepares the water for the downstream reverse osmosis systems.

Reverse osmosis (RO) is used to produce soft drinks. A second, RO system for the permeate treats the water to produce table water. Elevated silicon and bromide levels in the water in particular must be reduced. The RO systems are equipped with stainless steel pressure pipes and special membranes, which allow automatic cleaning with hot water up to 85°C.

The permeate for soft drinks and table water is each temporarily stored in a stacking tank. The permeate tanks are equipped with sterile ventilation and a recirculation line with UV disinfection to guarantee the hygienic safety of the treated water. If necessary, the stacking tanks can be cleaned with the help of a CIP spray ball.

Specially designed ring lines on the fillers also ensure permanent recirculation of the treated water and complete cleanability of the treated water pipes.

The system has a Siemens PLC control system, which we have custom-developed to meet customer needs. The system is operated fully automatically via a central touch control unit.

In 2020 and 2023, we carried out expansions to increase the maximum output by a further 80 m³/h.