Container MBR waste-water treatment plant of ALVEST type

Application

Container MBR waste-water treatment plant of ALVEST type is suitable for biological treatment of wastewater:

• municipal wastewater

• industrial wastewater from the production and processing of meat, fruit and vegetables, milk, production of drinks, foodstuffs, breeding of agricultural animals and other biologically treatable wastewater

Description of functioning

The wastewater is flowing into the ground pumping station. From here it is automatically pumped for mechanical pretreatment by means of gravity screen placed above the first container. The waste-water treatment plant is consisting of one or several above-the-ground steel containers. Separated rakings are falling down into placed accumulation vessel. The water mechanically pretreated in this way is accumulated in the equalizing tank. The wastewater is evenly pumped from equalizing tank into activation tank. The biological treatment is realized in the activation tank. An activation tank can be split into the denitrification and nitrification according to technological need. The mixture of activation sludge and treated water is gravitationally flowing into the membrane tank. Mitsubishi membrane modules are placed in this tank. Treated water is filtered through the membranes. Condensed activation mixture is pumped back into the activation tank. From this tank the redundant sludge can be pumped in the liquid condition in order to transport it to liquidation. Or the sludge can be pumped into the sludge box where it will thicken up more and mainly will be stored for longer period. Or the sludge is pumped directly for machine drainage by means of belt press or other device.

Regarding the fact that it is suggested to place the containers above the terrain an extraction of treated water – filtration of treated water is very easy.

An aeration of activation is made by means of pressure air or mechanical aerator. All other needed technological devices also with electro-distributor are placed in the mobile container object that is placed next to treating (cleaning) container.

Whole functioning of waste-water treatment plant is automated and even the remote control via Internet is also possible.

Design solution

Above-the-ground containers are designed as steel containers. They are sheathed by plastic sheathing with heat insulation by means of polystyrene or mineral wool. The containers are covered and the cover is also
heat-insulated for using also in the adverse climatic conditions.

Treating (cleaning) containers as well as operational container object are placed only on flat concrete slab.

External dimensions of containers are dimensioned in such way to enable their transport by truck without restrictions across the Europe.

The pumping station is designed as a plastic pumping station - made of polypropylene and is simply embedded into the excavation pit to flat base and filled up by sorted material and solidified.

Advantages

• low investment as well as operating costs
• quick assembly on construction site
• high efficiency – see the examples of municipal waste-water treatment plants
• large scope of biological functionality approximately from 5 % up to 120 % of project values
• high efficiency even in case of wastewater producing the sludge with bad sedimentation abilities
• simple possibility to move the waste-water treatment plant to other locations
• possibility to control it via Internet
• high strength and resistance of steel containers
• high-quality surface treatment provides long lifetime
• easy and good access to devices if the containers are free-placed above the terrain
  

Realization procedure

• elaboration of quotation and technical offer
• elaboration of project documentation
• production
• assembly on the construction site to concrete bearing plate

Municipal container waste-water treatment plant with using of Mitsubishi membrane separation

Capacity

• the lowest economically suitable size is for flow rate of approximately 10 m3/day
• the biggest economically recommended suitable size is estimated to be approximately for 1000 up to 2000 equivalent residents

Quality of treated water
On average it is possible to continuously reach the following parameters:

BSK5 = 3-5 mg/l
CHSK = 30-50 mg/l
NL = do 0,5 mg/l
NH4-N = 1 mg/l
NO3-N = 10 mg/l

Dimensions
In the above mentioned table there are listed the examples of waste-water treatment plants that will fulfil an above mentioned quality of treated water.

The residential container where the blower, distributor and suction pump with accumulation tank are situated can be replaced with brick object or wooden construction.

The power consumption is the same as in case of common conventional activating waste-water treatment plants with fine-bubble aeration.

An installed capacity is including 2 pcs of pumps in the pumping station.